JP3022254B2 - Microfilm carrier, image reading device, and image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microfilm carrier capable of using either a roll type or a sheet type microfilm, and an image reading apparatus and an image forming apparatus having the microfilm carrier.

[0002]

2. Description of the Related Art Conventionally, there is the following one provided with this kind of film carrier.

Hereinafter, a conventional example will be described with reference to FIGS.

FIG. 6 is a view showing a reader printer which also serves as an image forming apparatus as an image reading apparatus. A work table 11 mounted on a base 10 has a screen 12 on it.
Is provided. The housing 13 is provided with a lens holder (not shown) positioned below the screen 12, and the projection lens 15 is detachable from the lens holder. On the work table 11, a film carrier 16 for holding a microfilm is provided.

As shown in FIG. 6, light from a light source 20 provided in a base 10 is condensed by a condenser lens (not shown) to form a projection optical path 21. The projection optical path 21 is a film carrier. The image of the microfilm held by 16 is irradiated and passed, and reaches the projection lens 15.

[0006] The image of the microfilm enlarged by the projection lens 15 reaches the movable mirror 22. In the reader mode, the movable mirror 22 is set at a position shown by a broken line in FIG. 6, a broken-line reader optical path 24 reaching the screen 12 via the fixed mirror 23 is formed in the housing 13, and an image of the microfilm is displayed on the screen 12. The projection is enlarged.

In a print mode for printing a microfilm image on recording paper, the movable mirror 22 is at the position shown by a solid line in FIG.
Instead of 4, a printed optical path 25 of a solid line is formed. The movable mirror 22 swings gradually from that position for scanning,
The reflected light from this goes to the drum-shaped photoconductor 29 in the base 10 via the fixed mirrors 26 to 28. Thus, the image of the microfilm is enlarged and exposed as a slit light to the photoconductor 29 rotating in synchronization with the scanning. Then, the image of the microfilm is printed on the recording paper by a known process, and is discharged from the tray 17 provided on the front surface of the reader printer. Photoconductor 2
A known image forming unit (not shown) is provided around the periphery of the image forming unit 9.

Next, the film carrier 16 will be described. FIGS. 7A to 7D are views showing the whole of the film carrier 16. The glass unit 31 shown in FIG. 8A, the roll unit 32 shown in FIG. The film carrier 16 is constituted by the outer case unit 33 shown in FIG.

As shown in FIG. 8A, the glass unit 31 has a connection plate 34 located at the lowermost portion thereof, which is attached to a reader printer. On the connection plate 34, a base plate 36 having a knob 35 at the tip end
Is mounted so as to be position-adjustable in the front-rear direction of the reader printer, that is, in the direction of arrow Y, by a known configuration not shown. However, the movement of the base plate 36 in the Y direction is
4 may be performed by a lever swingably attached to the lever.

Guide rails 37, 38 extending in the left-right direction are laid on the base plate 36, and the first moving body 41 is slidable in the left-right direction, that is, the arrow X direction along these guide rails 37, 38. It is attached to.

At the right end of the first moving body 41, a glass frame 40 is mounted.
The upper carrier glass 43a for the roll film is fixed to the upper glass 43a, and the lower carrier glass 43b for the roll film shown in FIG. 10 and FIG. It is mounted so that it can be pressed and moved freely.

The lower glass 43b is moved toward and away from the upper glass 43a by a solenoid 44 attached to the frame 40. Corresponding to these glasses 43a and 43b at the position shown in FIG.
The first moving body 41 and the base plate 36 are formed with a through hole (not shown) for passing through an optical path.

A guide rail 45 is laid on the left end of the first moving body 41 so as to extend in the front-rear direction, that is, in the Y direction, and the second moving body 42 is slidable along the guide rail 45 in the Y direction. It is mounted on one moving body 41.

A handle 46 used for sliding the second moving body 42 is provided at a leading end of the second moving body 42. Further, a notch formed in the second moving body 42 has a sheet film. The upper carrier glass 47a for the sheet which can be opened and closed to cover the upper glass 47a is provided.
As shown in FIG. 7D, a lower carrier glass 47b for a sheet for supporting the sheet film F _S is fixed to the lower side.

The guide rail 45 is formed in a channel shape, and rollers (not shown) which roll in the guide rail 45 are attached to the second moving body 42. The right end of the second moving body 42 is connected to the right end. The sliding part 48 provided is the first moving body 4.
1 is slidably contacted with the surface of the first member.

In order to guide the sliding of the first moving body 41,
Instead of the two guide rails 37 and 38, a guide rail having the same structure as the guide rail 45 is attached to the base plate 36,
A sliding body having the same structure as the sliding body 48 may be provided on the lower surface of the first moving body 41 along the X direction.

As shown in FIG. 8A, when the first moving body 41 is located at the left end with respect to the base plate 36, the roll carrier glasses 43a and 43b are positioned at the center of the base plate 36. In this position, the second mobile unit 4
2 can be positioned on the first moving body 41 by retracting to the rear as shown.

At this time, since the movement of the second moving body 42 in the Y direction can move independently of the first moving body 41, the carrier glass 47 for the sheet film is used.
a, 47b can be moved lightly.

At the position where the second moving body 42 is retracted, a beam extending in the Y direction that interferes with the second moving body 42 to prevent the first moving body 41 from sliding in the X direction. A member 49 and a beam member 50 integrated therewith are attached to the right corner of the base plate 36.

The roll unit 32 shown in FIG. 8B is brought into contact with the upper surfaces of these beams 49 and 50.
Are mounted on the base plate 36.

As described above, by sliding the first moving body 41 in the left-right direction, either the carrier glass 43a, 43b for a roll film or the carrier glass 47a, 47b for a sheet film is selected and projected. Light path 2
1 can be used, and both the roll film and the sheet film can be used without increasing the width of the film carrier 16 in the front-rear direction.

As shown in FIG. 8B, the roll unit 32 includes a center unit 53 and a first roll unit 51 and a second roll unit 52 located on both sides of the center unit 53. It is configured.

The first roll unit 51 is a roll film supply unit, and the second roll unit 52 is a roll film winding unit. The center unit 53 has a projection light path passage portion 53a through which the projection light path passes.

The transport of the roll film loaded in the roll unit 32 is controlled by operating a knob 19a provided in the controller 19 shown in FIG. 7, and the roll film is transported in the left and right direction of the film carrier.

Reference numeral 19b denotes a loading button operated when a roll film is loaded on the film carrier 16.

As shown in FIG. 9A, the first roll unit 51 is provided with a roll mounting shaft 54 for supporting the roll film F _R , from which the roll film is sent out and the second roll The take-up reel 55 provided in the unit 52 winds the take-up reel 55.

Then, in a state where the image recorded on the roll film F _R is projected, the second moving body 42 having the glass sheets 47a and 47b for the sheet film.
Is accommodated below the first roll unit 51, so that the accommodation space for the second moving body 42 is effectively secured.

In order to feed the leading end of the roll film to the take-up reel 55, the first roll unit 51
, A loading portion 56 is provided adjacent to the roll mounting shaft 54.

The film carrier 16 can be selectively loaded with a film having a width of 16 mm and a film having a width of 35 mm. For this purpose, a center frame serving as a base of the center unit 53 is provided. As shown in FIG. 9A, a switching plate 65 is slidably mounted in the front-rear direction.

In order to regulate the sliding range of the switching plate 65, a plurality of projections 67 are fixed to a guide frame 66 integrated with the center frame 64.
A long hole 68 that engages with 7 is formed in the switching plate 65.

Therefore, the switching plate 65 slides in the front-rear direction by the difference between the widths of the two types of films. At the time of this sliding, the operator operates the switching handle 69 integrated with the switching plate 65.

The handle 69 is marked with a character of "35 mm" and a character of "16 mm", and by moving the switching plate 65 using the handle 69, as shown in FIG. character is exposed from the opening formed in the outer casing unit 33, the width of the roll film F _R that is set is displayed to the operator.

As shown in FIG. 9A, the take-up reel 55 includes a rear disc 55a and a front disc 55b.
The front disk 55b is held by a holding member 70 integrated with the switching plate 65, and the front disk 55b moves toward and away from the rear disk 55a in conjunction with the switching plate 65. As a result, the width dimension of the take-up reel 55 also becomes a width corresponding to the width of the loaded roll film.

The loading section 56 of the roll film
The center unit 53 is provided with a plurality of guide rollers in order to guide the portion from to the take-up reel 55.

These guide rollers are used for the roll film F.
_{When R} is used, it is protruded toward the base plate 36 to the operating position, and when the sheet film F _S is used, it is directed toward the roll unit 32 in order to avoid interference between the guide rollers and the upper sheet glass 47a. It is necessary to move to the evacuation position.

The guide roller retracting mechanism will now be described with reference to FIGS. 9B and 9C.

Two driven shafts 71, 7 rotatably attached to the center frame 64 in the front-rear direction, respectively.
As shown in FIG. 9 (C), arms 73 and 74 are fixed to the tip of
Guide rollers 75 and 76 are rotatably attached to the tips of the rollers 3 and 74.

Bevel gears 77 and 78 are fixed to the rear ends of the driven shafts 71 and 72, respectively.
Bevel gears 79, 80 meshing with 8 are fixed to the drive shaft 81.

Driving lever 82 fixed to driving shaft 81
And a bracket 83 fixed to the center frame 64
The spring member 84 is mounted between the
Thus, the resilient force is applied to the guide rollers 75 and 76 via the drive shaft 81 and the driven shafts 71 and 72 in a direction in which the guide rollers 75 and 76 are retracted toward the roll unit 32.

Further, an operation lever 85 is fixed to the drive shaft 81, and this operation lever 85 is directed downward as shown in FIG. 9B, and the second moving body 42 is further moved to the retreat limit position. When it slides, it is at a position where it comes into contact with the second moving body 42.

Therefore, when the second moving body 42 is at the retreat limit position, as shown by a two-dot chain line in FIG.
Since the operation lever 85 rotates against the resilience of the spring member 84, the guide rollers 75 and 76 respectively protrude downward, that is, toward the base plate 6, to reach the operation position, as shown in FIG. .

As shown in FIG. 9 (A), support shafts 86 and 87 which are concentric with the driven shafts 71 and 72 respectively are provided at the downwardly bent portions provided at the distal end of the switching plate 65. , Arms 88 and 89 are rotatably mounted, and guide rollers 90 and 91 are rotatably provided at the tips of the arms 88 and 89, respectively.

The engagement pins 92, 93 fixed to the arms 88, 89 are engaged with the elongated holes 94 formed in the arms 73, 74, and interlock with the rotation of the arms 73, 74. The arms 88 and 89 also swing.

The arms 88 and 89 are connected to the switching plate 65.
Is moved back and forth with respect to the arms 73 and 74, the distance between the guide rollers 75 and 76 and the guide rollers 90 and 91 is changed, and the distance between the guide rollers 75 and 76 and the set width of the roll film is changed. The spacing between the rollers can be varied.

As shown in FIG. 10, a guide plate 95 for guiding the roll film is provided on the arms 73 and 74.
A guide plate (not shown) is also provided on a pair of arms 88 and 89 adjacent to the arms 73 and 74.

Similarly, the second roll unit 52 includes
A guide plate 97 for guiding the roll film wound on the take-up reel 55 is attached to be swingable about a support shaft 98.

[0047] Incidentally, the guide plate 97, when the roll film is loaded, i.e., when the leading end of the roll film F _R is wound around the take-up reel 55,
The leading end of the film F _R toward the axis of the take-up reel 55 is intended to perform the function of guiding, except when loading roll film is retracted to the position indicated by the two-dot chain line.

A state in which the roll film F _R is wound up by the take-up reel 55 with the arms 73 and 74 in the operating position together with the arms 88 and 89 corresponds to FIG. 75,76
Is protruded to the position of the notch 42a formed at the right end of the second moving body 42 as shown.

[0049] In state where the roll film F _R is loaded in the roll unit 32, is pulled out of the second moving member 42 forward, the contact between the second moving body 42 and the actuating lever 85 be released as shown in FIG. 11, since the guide plates 95 and 96 comes into contact with the roll film F _R, the guide rollers 75 and 76 can not be moved to a predetermined retracted position.

As a result, even if the second moving body 42 is further pulled out, the second moving body 42 collides with the arm 73, and the second moving body 42 cannot be further pulled out. Reference numeral 73 also functions as a lock mechanism for preventing the use of the sheet film F _S when the roll film F _R is loaded.

In this state, in order to prevent the roll film F _{R from} being damaged, as shown in FIG. 11, the tips of the guide plates 95 and 96 are rounded, and the upper glass 43a for the roll film is used. The arm portion R is also formed on the side surface of the.

[0052] roll film F _R is roll unit 32
In the state where the second moving body 42 is stored at the retreat limit position, the lock mechanism for suppressing the pulling out of the second moving body 42 in a state where the second moving body 42 is A structure in which a claw member engaged with the moving body 42 is operated by a solenoid can be given.

[0053] In such a case, the film upstream side in the transport direction than the guide rollers 75, a light sensor for detecting the presence of roll film F _R provided to turn on and off the solenoid by a signal from the sensor.

Thus, only when the roll film F _R is removed from between the carrier glasses 43a and 43b, the second moving body 42 can be moved in the front-rear direction.

Further, as another lock mechanism, a claw member similar to the above is used, and a solenoid for operating the same is used.
The operation may be performed by attaching / detaching the roll film to / from the roll mounting shaft 54.

In this case, the sheet film F _S can be loaded only when the roll film is removed from the roll mounting shaft 54.

Next, the operation procedure of the above-described film carrier 16 will be described.

FIG. 7A shows a state in which the roll film can be used, and the first moving body 41 is at the leftmost position. Further, the second moving body 42 is located at a retracted position at the rearmost end, and the second moving body 42 is housed in a housing space formed between the roll unit 32 and the base plate 36.

The positions of these moving bodies 41 and 42 are shown in FIG.
(A). At this time, the second moving body 42 presses the operating lever 85, thereby causing the arm 73,
Reference numeral 74 indicates the position shown in FIG. 10 together with the arms 88 and 89.

[0060] Under this state, the thus mounting the roll film F _R on the roll mounting shaft 54, previously the in correspondence with the width of the roll film F _R, by adjusting the moving switching plate 65 by the handle 69 deep.

When the loading button 19b is pressed, the drive roller 61 rotates in the direction of arrow A. Accordingly, the driven roller 202 rotates. Film F the tip of the _R and along a supply table 201 drive roller 61 and the driven roller 20
After the transport rollers 61 and 202 sandwich the film between the two, the guide rollers 75 and the carrier glass 43
between a and 43 b, via a guide roller 76, it is possible to find an image film leader is formed on wound roll film F _R to the take-up reel 55.

This search operation is performed by the knob 19a of the controller 19. At this time, the position of the projection optical path 53a can be adjusted by rotating the knob 35 to move and adjust the base plate 36 in the front-rear direction and finely adjusting the position of the film carrier 16 in the front-rear direction. .

When ending the search, the controller 1
By continuing to manipulate the knob 19a of 9, returned every roll film F _R in the first roll unit 51. If the film is not completely returned and the film is
When the user is present between 3a and 43b and tries to pull the second moving body 42 forward by holding the handle 46, the second moving body 42 interferes with the arm 73 as shown in FIG. Further withdrawals are prevented.

When the roll film F _R is loaded on the roll mounting shaft 54 under the condition shown in FIG. 7A, a part of the handle 46 of the second moving body 42 is moved by the roll film F _R. Since it is hidden, it becomes difficult to operate the second moving body 42 when loading the roll film,
There is an advantage that erroneous operation is prevented.

To load a sheet film, for example, a microfilm F _S after removing the roll film F _R , first pull the second moving body 42 forward as shown in FIG. 7B. As a result, the arms 73 and 74 rotate together with the arms 88 and 89 to the retracted position, and contact between these arms and the upper glass sheet 47a for the sheet is avoided.

When the second moving body 42 is moved rightward from this position, as shown in FIG.
a is directly below the projection lens 15, that is, the projection optical path passage portion 53.
It can be positioned at the position a.

As shown in FIG. 7D, the second moving body 42
Is pulled further forward, the upper glass sheet 47a for the sheet can be opened, and in this state, the sheet film F _S can be loaded or replaced. In order to switch the loading of the microfilm into the film carrier 16 from the sheet film F _S to the roll film F _R , an operation reverse to the above-described procedure is performed.

In the conventional example shown in FIG.
Although the first roll unit 51 for the roll film supply unit is provided on the left of 2 and the second roll unit 52 for the roll film take-up unit is provided on the right, the left and right may be reversed.

[0069] Furthermore, the glass frame 40 provided at the left end portion of the first moving body 41, when the roll film F _R is loaded, the second moving member 42 is adjacent the right of the frame 40, i.e. the second roller unit You may make it accommodated under the part 52.

In the case shown, the first moving body 41
Although the second moving body 42 is mounted on the base plate 36 so as to be movable in the front-rear direction, the second moving body 42 is also mounted on the base plate 36 so as to be movable in the X direction. Directly,
It may be mounted on the base plate 36 so as to be movable in the X direction and the Y direction. In this case, when the carrier glass 43a for the roll film and the carrier glass 47a for the sheet film are selectively set at the position of the projection optical path passage portion 53a, both the moving bodies 41 and 42 are in the X direction. Move to the structure.

[0071]

However, in the above-mentioned conventional example, the sheet film is searched once during the search for the roll film, and even when the same image is projected or printed on the roll film again, the sheet film is not searched. Once, the roll film must be rewound.

After the sheet film search, the roll film must be loaded again to search for the previous image while looking at the screen, and the work efficiency was very poor.

The present invention has been made in order to solve the above-mentioned problems of the prior art.
An object of the present invention is to provide a microfilm carrier capable of improving the work efficiency when searching again after a roll film search is interrupted, an image reading apparatus and an image forming apparatus using the same.

[0074]

[0075]

[MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
According to the present invention, the roll film and the sheet film are switchable microfilm carriers, and the supply section of the roll film and the take-up section of the roll film pass through a predetermined light path through the projection optical path passing section. A roll film unit having a roll film transport unit for transporting the roll film from the roll film supply unit to the roll film winding unit through the projection optical path passage unit to the roll film winding unit is provided at an interval, and a roll film carrier is provided. Glass is provided, the carrier glass is located in the projection optical path passage section, and an image formed on the projected roll film is transported to the projection optical path passage section via the roll film transport section of the roll film unit and is projected. The first moving body to be moved to search for the sheet, and the carrier glass for the sheet film in front A second moving body that is located in the projection light path passage section and moves to search for an image formed on the sheet film projected by the projection light path passage section; When moving the moving body integrally in the roll film transport direction, provided between the base plate and the roll film unit, when moving the carrier glass of the second moving body to the projection optical path passing portion, When the roll film is retracted from the roll film transport unit of the roll film unit, and after the image formed on the roll film is searched, when the film is rewound to the roll film supply unit, the search is performed by the projection optical path passing unit at that time. Storage means for storing the position of the image which has been used.

It is preferable to provide a transport unit for transporting the roll film to the image position searched in the projection optical path passage unit stored in the storage unit.

Further, a roll film presence / absence detection sensor for the roll film is provided in the middle of the roll film supply section of the roll film transport section of the roll film carrier.
Means may be provided for stopping the rewinding of the roll film when the roll film presence / absence detection sensor detects that there is no roll film at the time of rewinding to the roll film supply section of the roll film.

Further, a roll film reel presence / absence detection sensor is provided in the roll film supply section of the roll film unit, and the reel presence / absence detection sensor passes the projection optical path at the time when the roll film is rewound to the roll film supply section. A unit may be provided for deleting data stored in the storage unit when it is detected that there is no reel while the image position searched by the unit is stored in the storage unit.

The above-mentioned microfilm carrier may be provided in the image reading section of the image reading apparatus, or may be provided in the image exposure section of the image forming apparatus.

[0080]

The roll film and the sheet film having the above structure
In the switchable microfilm carrier, during the search for the image formed on the roll film in the projection optical path passage section, when temporarily interrupted, when rewinding to the roll film supply section, the projection optical path at that time Since the storage unit for storing the position of the image searched in the passing unit is provided, when searching again from the same image position, the previous image position can be known based on the data stored in the storage unit. Since there is no need to search for the previous image position while viewing, the search work efficiency is improved.

[0081]

Further, by providing the transport means for transporting the roll film to the image position searched in the projection optical path passage section stored in the storage means, it is possible to automatically return to the image position before the search was interrupted. Therefore, the search work efficiency is further improved.

Furthermore, by providing a means for stopping the rewinding of the roll film when the roll film presence / absence detection sensor detects the absence of the roll film at the time of rewinding at the roll film supply section of the roll film, the roll film can be completely removed. Since the roll film is not rewound to the roll film supply unit and is waited in the roll film transport unit, it is not necessary to set the roll film in the roll film supply unit again, so that the search can be performed quickly.

A reel presence / absence detection sensor is provided. When the reel presence / absence detection sensor rewinds the roll film to the roll film supply unit, the image position searched in the projection optical path passage unit at that time is stored in the storage unit. By providing a means for deleting the data stored in the storage means when it is detected that there is no reel in the state in which the reel is wound, the reel of the rolled film is once removed from the roll film supply unit. And the data stored in the image position are erased, so that there is no risk of malfunction when a search is performed after another microfilm reel is set in the roll film supply unit.

By providing the above-described microfilm carrier in the image reading section of the image reading apparatus, the image reading workability is improved, and by providing the microfilm carrier in the image exposure section of the image forming apparatus, the image forming workability is improved. I do.

[0086]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments.

(First Embodiment) A microfilm carrier (hereinafter abbreviated as a film carrier) according to a first embodiment of the present invention is well shown in FIGS. Other configurations are the same as those of the conventional example as shown in FIGS. 8, 9 and 11. The film carrier according to the present embodiment is applied to a reader printer having an image forming unit as the image reading apparatus shown in FIG.

As described above, since the parts other than the characteristic parts are the same as those of the conventional example, the same reference numerals are given to the same constituent parts as those of the conventional example, and FIGS. 1 to 3, FIG. 6, FIG. 8, FIG. 11
An embodiment will be described below based on FIG.

FIG. 6 is a diagram showing a reader printer having an image forming unit as an image reading device. A housing 13 having a screen 12 is installed on a work table 11 attached to a base 10. I have. The housing 13 is provided with a lens holder (not shown) positioned below the screen 12, and the projection lens 15 is detachable from the lens holder. On the work table 11, a film carrier 16 for holding a microfilm is provided.

As shown in FIG. 6, light from a light source 20 provided in the base 10 is condensed by a condenser lens (not shown) to form a projection optical path 21. The projection optical path 21 is a film carrier. The image of the microfilm held by 16 is irradiated and passed, and reaches the projection lens 15.

The microfilm image enlarged by the projection lens 15 reaches the movable mirror 22. In the reader mode, the movable mirror 22 is set at a position shown by a broken line in FIG. 6, a broken-line reader optical path 24 reaching the screen 12 via the fixed mirror 23 is formed in the housing 13, and an image of the microfilm is displayed on the screen 12. The projection is enlarged.

In the print mode for printing the image of the microfilm on the recording paper, the movable mirror 22 is at the position shown by the solid line in FIG.
Instead of 4, a printed optical path 25 of a solid line is formed. The movable mirror 22 swings gradually from that position for scanning,
The reflected light from this goes to the drum-shaped photoconductor 29 in the base 10 via the fixed mirrors 26 to 28. Thus, the image of the microfilm is enlarged and exposed as a slit light to the photoconductor 29 rotating in synchronization with the scanning. Then, the image of the microfilm is printed on the recording paper by a known process, and is discharged from the tray 17 provided on the front surface of the reader printer. Photoconductor 2
A known image forming unit (not shown) is provided around the periphery of the image forming unit 9.

Next, the film carrier 16 will be described. FIGS. 1A to 1D are views showing the entire film carrier 16, which are a glass unit 31 shown in FIG. 8A and a roll film carrier shown in FIG. 8B. Roll unit 32 and FIG.
The film carrier 16 is constituted by the outer case unit 33 shown in FIG.

As shown in FIG. 8A, the lowermost connection plate 34 of the glass unit 31 is attached to the reader printer. On the connection plate 34, a base plate 36 having a knob 35 at the tip end
Is mounted so as to be position-adjustable in the front-rear direction of the reader printer, that is, in the direction of arrow Y, by a known configuration not shown. However, the movement of the base plate 36 in the Y direction is
4 may be performed by a lever swingably attached to the lever.

Guide rails 37, 38 extending in the left-right direction are laid on the base plate 36, and the first moving body 41 is slidable in the left-right direction, that is, the arrow X direction, along these guide rails 37, 38. It is attached to.

At the right end of the first moving body 41, a glass frame 40 is mounted.
The upper carrier glass 43a for a roll film is fixed to the upper glass 43a, and the lower carrier glass 43b for a roll film, which is located below the upper glass 43a and shown in FIGS. It is mounted so that it can be pressed and moved freely.

The lower glass 43b is moved toward and away from the upper glass 43a by a solenoid 44 attached to the frame 40. Corresponding to these glasses 43a and 43b at the position shown in FIG.
The first moving body 41 and the base plate 36 are formed with a through hole (not shown) for passing through an optical path.

A guide rail 45 is laid on the left end of the first moving body 41 so as to extend in the front-rear direction, that is, in the Y direction, and the second moving body 42 is slidable along the guide rail 45 in the Y direction. It is mounted on one moving body 41.

A handle 46 used for sliding the second moving body 42 is provided at the front end of the second moving body 42. Further, a notch formed in the second moving body 42 has a sheet film. The upper carrier glass 47a for the sheet which can be opened and closed to cover the upper glass 47a is provided.
As shown in FIG. 1D, a lower carrier glass 47b for a sheet for supporting the sheet film F _S is fixed to the lower side.

The guide rail 45 is formed in a channel shape, and rollers (not shown) which roll in the guide rail 45 are attached to the second moving body 42. The right end of the second moving body 42 is connected to the right end. The sliding part 48 provided is the first moving body 4.
1 is slidably contacted with the surface of the first member.

In order to guide the sliding of the first moving body 41,
Instead of the two guide rails 37 and 38, a guide rail having the same structure as the guide rail 45 is attached to the base plate 36,
A sliding body having the same structure as the sliding body 48 may be provided on the lower surface of the first moving body 41 along the X direction.

As shown in FIG. 8A, when the first moving body 41 is positioned at the left end with respect to the base plate 36, the carrier glass for rolls 43a and 43b is positioned at the center of the base plate 36. In this position, the second mobile unit 4
2 can be positioned on the first moving body 41 by retracting to the rear as shown.

At this time, since the movement of the second moving body 42 in the Y direction can move independently of the first moving body 41, the carrier glass 47 for the sheet film can be used.
a, 47b can be moved lightly.

At the position where the second moving body 42 is retracted, in order to prevent the first moving body 41 from sliding in the X direction, a beam extending in the Y direction interfering with the second moving body 42. A member 49 and a beam member 50 integrated therewith are attached to the right corner of the base plate 36.

The roll unit 32 shown in FIG. 8B is brought into contact with the upper surfaces of these beams 49 and 50.
Are mounted on the base plate 36.

As described above, by sliding the first moving body 41 in the left-right direction, one of the carrier glass 43a, 43b for a roll film and the carrier glass 47a, 47b for a sheet film is selected and projected. Light path 2
1 can be used, and both the roll film and the sheet film can be used without increasing the width of the film carrier 16 in the front-rear direction.

As shown in FIG. 8B, the roll unit 32 includes a center unit 53 and a first roll unit 51 and a second roll unit 52 located on both sides of the center unit 53. It is configured.

The first roll unit section 51 is a roll film supply section, and the second roll unit section 52 is a roll film winding section. The center unit 53 has a projection light path passage portion 53a through which the projection light path passes.

The conveyance control of the roll film loaded in the roll unit 32 is performed by the controller 400 shown in FIG.

The controller 400 has a loading button 401 which is operated when loading a roll film into the film carrier 16, which is a so-called loading operation.
And a rewind button 402 operated to rewind the roll film wound up by the second roll unit section 52 to the first roll unit section 51.
When rewinding, the projection optical path passage portion 53 at that time
A memory button 403 for storing and operating the position of the image of the roll film projected on a is provided, and a knob 404 for operating the transport of the roll film.

As shown in FIG. 9A, the first roll unit 51 is provided with a roll mounting shaft 54 for supporting the roll film F _R , and the roll film is fed out of the first roll unit 51. The take-up reel 55 provided on the two-roll unit 52 winds the take-up reel 55.

Then, in a state where the image recorded on the roll film F _R is projected, the second moving body 42 having the glass sheets 47a and 47b for the sheet film is provided.
Is accommodated below the first roll unit 51, so that the accommodation space for the second moving body 42 is effectively secured.

In order to feed the leading end of the roll film to the take-up reel 55, the first roll unit 51
, A loading portion 56 is provided adjacent to the roll mounting shaft 54.

The film carrier 16 can be selectively loaded with a film having a width of 16 mm and a film having a width of 35 mm. For this purpose, a center frame serving as a base of the center unit 53 is provided. As shown in FIG. 9A, a switching plate 65 is slidably mounted in the front-rear direction.

In order to regulate the sliding range of the switching plate 65, a plurality of projections 67 are fixed to a guide frame 66 integrated with the center frame 64.
A long hole 68 that engages with 7 is formed in the switching plate 65.

Therefore, the switching plate 65 slides in the front-rear direction by the difference between the widths of the two types of films. At the time of this sliding, the operator operates the switching handle 69 integrated with the switching plate 65.

The handle 69 is marked with the characters “35 mm” and “16 mm”. By moving the switching plate 65 using the handle 69,
As shown in, any of the characters are exposed from the opening formed in the outer casing unit 33, the width of the roll film F _R that is set is displayed to the operator.

As shown in FIG. 9A, the take-up reel 55 includes a rear disc 55a and a front disc 55b.
The front disk 55b is held by a holding member 70 integrated with the switching plate 65, and the front disk 55b moves toward and away from the rear disk 55a in conjunction with the switching plate 65. As a result, the width dimension of the take-up reel 55 also becomes a width corresponding to the width of the loaded roll film.

The loading section 56 of the roll film
The center unit 53 is provided with a plurality of guide rollers in order to guide the portion from to the take-up reel 55.

These guide rollers are used for the roll film F.
_{When R} is used, it is protruded toward the base plate 36 to the operating position, and when the sheet film F _S is used, it is directed toward the roll unit 32 in order to avoid interference between the guide rollers and the upper sheet glass 47a. It is necessary to move to the evacuation position.

Next, the retracting mechanism of the guide roller will be described with reference to FIGS. 9B and 9C and FIG.

Two driven shafts 71, 7 rotatably attached to the center frame 64 in the front-rear direction.
As shown in FIG. 9 (C), arms 73 and 74 are fixed to the tip of
Guide rollers 75 and 76 are rotatably attached to the tips of the rollers 3 and 74.

Bevel gears 77 and 78 are fixed to the rear ends of the driven shafts 71 and 72, respectively.
Bevel gears 79, 80 meshing with 8 are fixed to the drive shaft 81.

A driving lever 82 fixed to a driving shaft 81
And a bracket 83 fixed to the center frame 64
The spring member 84 is mounted between the
Thus, the resilient force is applied to the guide rollers 75 and 76 via the drive shaft 81 and the driven shafts 71 and 72 in a direction in which the guide rollers 75 and 76 are retracted toward the roll unit 32.

Further, an operation lever 85 is fixed to the drive shaft 81, and this operation lever 85 is directed downward as shown in FIG. 9B, and the second moving body 42 is further moved to the retreat limit position. When it slides, it is at a position where it comes into contact with the second moving body 42.

Accordingly, when the second moving body 42 is at the retreat limit position, as shown by a two-dot chain line in FIG.
Since the operating lever 85 rotates against the resilience of the spring member 84, the guide rollers 75 and 76 respectively protrude downward, that is, toward the base plate 6, as shown in FIG. .

As shown in FIG. 9A, support shafts 86, 87 which are concentric with the driven shafts 71, 72 are provided on the downwardly bent portion provided at the tip of the switching plate 65. , Arms 88 and 89 are rotatably mounted, and guide rollers 90 and 91 are rotatably provided at the tips of the arms 88 and 89, respectively.

The engaging pins 92, 93 fixed to the arms 88, 89 are engaged with the elongated holes 94 formed in the arms 73, 74, and are interlocked with the rotation of the arms 73, 74. The arms 88 and 89 also swing.

The arms 88 and 89 are connected to the switching plate 65.
Is moved back and forth with respect to the arms 73 and 74, the distance between the guide rollers 75 and 76 and the guide rollers 90 and 91 is changed, and the distance between the guide rollers 75 and 76 and the set roll film width is changed. The spacing between the rollers can be varied.

As shown in FIG. 2, guide plates 95, 9 for guiding the roll film are provided on the arms 73, 74.
6 are attached, and a pair of arms 88 and 89 adjacent to these arms 73 and 74 are also provided with guide plates (not shown).

Similarly, the second roll unit 52 includes
A guide plate 97 for guiding the roll film wound on the take-up reel 55 is attached to be swingable about a support shaft 98.

[0132] Incidentally, the guide plate 97, when the roll film is loaded, i.e., when the leading end of the roll film F _R is wound around the take-up reel 55,
The leading end of the film F _R toward the axis of the take-up reel 55 is intended to perform the function of guiding, except when loading roll film is retracted to the position indicated by the two-dot chain line.

A state in which the roll film F _R is wound up by the take-up reel 55 with the arms 73 and 74 in the operating position together with the arms 88 and 89 corresponds to FIG. 75,76
Is protruded to the position of the notch 42a formed at the right end of the second moving body 42 as shown.

[0134] In state where the roll film F _R is loaded in the roll unit 32, is pulled out of the second moving member 42 forward, the contact between the second moving body 42 and the actuating lever 85 be released as shown in FIG. 11, since the guide plates 95 and 96 comes into contact with the roll film F _R, the guide rollers 75 and 76 can not be moved to a predetermined retracted position.

As a result, even if the second moving body 42 is further pulled out, the second moving body 42 collides with the arm 73, and the second moving body 42 cannot be further pulled out. Reference numeral 73 also functions as a lock mechanism for preventing the use of the sheet film F _S when the roll film F _R is loaded.

In this state, the tips of the guide plates 95 and 96 are rounded to prevent the roll film F _{R from} being damaged, as shown in FIG. The arm portion R is also formed on the side surface of the.

The roll film F _R is roll unit 32
In the state where the second moving body 42 is stored at the retreat limit position, the lock mechanism for suppressing the pulling out of the second moving body 42 in a state where the second moving body 42 is A structure in which a claw member engaged with the moving body 42 is operated by a solenoid can be given.

[0138] In such a case, the film upstream side in the transport direction than the guide rollers 75, a light sensor for detecting the presence of roll film F _R provided to turn on and off the solenoid by a signal from the sensor.

[0139] Thus, the roll film F _R carrier glass 43a, only when it is excluded from between the 43 b, it is possible to move the second moving body 42 in the front-rear direction.

Further, as another lock mechanism, a claw member similar to that described above is used, and a solenoid for operating the same is used.
The operation may be performed by attaching / detaching the roll film to / from the roll mounting shaft 54.

In this case, the sheet film F _S can be loaded only when the roll film is removed from the roll mounting shaft 54.

Next, the operation procedure of the above-described film carrier 16 will be described.

FIG. 1A shows a state where the roll film can be used, and the first moving body 41 is at the leftmost position. Further, the second moving body 42 is located at a retracted position at the rearmost end, and the second moving body 42 is housed in a housing space formed between the roll unit 32 and the base plate 36.

The positions of these moving bodies 41 and 42 are shown in FIG.
(A). At this time, the second moving body 42 presses the operating lever 85, thereby causing the arm 73,
Reference numeral 74 indicates the position shown in FIG. 2 together with the arms 88 and 89.

In this state, the roll film F _R is mounted on the roll mounting shaft 54. The switching plate 65 is adjusted and moved by the handle 69 in advance in accordance with the width of the roll film F _R. deep.

Here, loading of a roll film and retrieval of an image will be described with reference to FIGS.

Loading 401 of controller 400
When the is pressed, the motor M1 is started, and the power is transmitted through the shaft 61a to the drive roller 61 which forms a roll film transport unit integrated with the shaft 61a and rotates. This drive roller 6
Supplying roll film F _R tip along a supply base 201 to 1.

As described above, the roller 6 is supplied between the driving roller 61 and the driven roller 202 of the roll film transport section,
1,202 guide rollers 75 automatically, then the interleave roll film F _R, the carrier glass 43a and 43
During the period b, the leading end of the film is wound on the take-up reel 55 of the second roll unit 52 via the guide roller 76.

The subsequent film search is performed with the knob 404.
When the knob 404 is turned in the direction A, the roll film F _R becomes as shown in FIG.
In the A direction as shown, the roll film F _R is turning the knob 404 in the B direction to move in the direction B as shown in FIG.

[0150] The rotating operation of the knob 404 can be searched by changing the position of the image formed on the roll film F _R projected on the projection optical path passing portions 53a.

At this time, by rotating the knob 35 to move and adjust the base plate 36 itself in the front-rear direction and finely adjusting the position of the film carrier 16 in the front-rear direction, the position of the projection optical path passage portion 53a can be adjusted. You can do it too.

[0152] Search is completed, the roll film F _R when unwinding the supply reel 204 of the first roll unit 51, the roll film F _R is moved in the direction A supply reel 204 by pressing the rewind button 402 It is wound up.

Next, when temporarily rewinding the roll film F _R , that is, while searching for an image formed on the roll film, the sheet film is once searched by the sheet film carriers 47a and 47b, and the roll film is searched again. For example, the memory button 403 is pressed, and the rewind button 402 is pressed (hereinafter referred to as a memory rewind operation).

By performing the memory rewind operation, a storage operation of the image position searched for on the projection optical path passage portion 53a described later is started.

As a result, the roll film F _R moves in the direction A and is wound on the supply reel 204. When the leading end of the roll film F _R passes through the film sensor 203 serving as a roll film presence / absence detection sensor, and when the roll film is detected to be absent, the rewind operation is stopped, and the film F is moved between the drive roller 61 and the film sensor 203.
_R stops.

Incidentally, the memory rewind operation may be performed by using the memory button 403 and the knob 404 without providing the rewind button 402.

When retrieving the previous roll film F _R again, the memory button 403 is pressed and the loading button 40 is pressed.
Until the image position before rewinding Press 1 (hereinafter referred to as a memory loading operation) for transporting the roll film F _R.

When only the loading button 401 is pressed, normal loading is performed.

Note that the memory loading operation is performed without using the loading button 401 and the memory button 403 and the knob 4.
04 may be operated.

Referring to FIG. 3, the storage means and operation of the image position before rewind will be described.

When a memory rewind operation is performed, the roll film F _R moves in the direction A. At this time, the driving roller 61 with the movement of the roll film F _R is rotated. This rotation is transmitted to a pulse generation unit which forms storage means provided on the shaft 61a. The pulse generator 210 is composed of a disk 205 fixed to the shaft 61a, and a sensor 207 having a light emitting diode and a photoelectric conversion element provided opposite each other with slits 206 provided at regular intervals on the peripheral surface of the disk 205. It is configured.

[0162] storing the image being projected currently performed memory rewind operation in a storage unit (not shown) by measuring the number of pulses of the film movement amount of up roll film F _R is wound stops.

Thereafter, when a memory loading operation is performed, the film F _R is conveyed by the stored film moving amount, so that the image before rewinding is immediately searched. As a result, even when the search for the roll film is temporarily stopped and the search for the sheet film is performed, the search for the roll film can be performed immediately from the position before the stop.

As described above, it is possible to improve the work efficiency of the re-search after the temporary stop of the search.

[0165] Further, in the case of memory rewind, when searching for roll film F _R again roll film since the state of Tsu sandwiched by the driving roller 61 parts instead of all wound on the supply reel 204, the roll film drive roller The work of pinching can be omitted.

Accordingly, it is possible to improve the reader and print operability in the reader printer.

[0167] Then, when the search ends as described above, by continuing to manipulate the knob 404 of the controller 400 in the B direction and returned all roll film F _R in the first roll unit 51. When the film is not completely returned and is present between the glass rolls 43a, 43b, the handle 46 is held and the second moving body 42 is held.
11, the second moving body 42 interferes with the arm 73, and further pulling out is prevented.

When the roll film F _R is loaded on the roll mounting shaft 54 under the condition shown in FIG. 1A, a part of the handle 46 of the second moving body 42 is moved by the roll film F _R. Since it is hidden, it becomes difficult to operate the second moving body 42 when loading the roll film,
There is an advantage that erroneous operation is prevented.

To load a sheet film, for example, a microfilm F _S after removing the roll film F _R , first pull the second moving body 42 forward as shown in FIG. 1 (B). As a result, the arms 73 and 74 rotate together with the arms 88 and 89 to the retracted position, and contact between these arms and the upper glass sheet 47a for the sheet is avoided.

When the second moving body 42 is moved rightward from this position, as shown in FIG.
a is directly below the projection lens 15, that is, the projection optical path passage portion 53.
It can be positioned at the position a.

As shown in FIG. 1D, the second moving body 42
Is pulled further forward, the upper glass sheet 47a for the sheet can be opened, and in this state, the sheet film F _S can be loaded or replaced. In order to switch the loading of the microfilm into the film carrier 16 from the sheet film F _S to the roll film F _R , an operation reverse to the above-described procedure is performed.

In the illustrated embodiment, the roll unit 3
Although the first roll unit 51 for the roll film supply unit is provided on the left of 2 and the second roll unit 52 for the roll film take-up unit is provided on the right, the left and right may be reversed.

[0173] Furthermore, the glass frame 40 provided at the left end portion of the first moving body 41, when the roll film F _R is loaded, the second moving member 42 is adjacent the right of the frame 40, i.e. the second roller unit You may make it accommodated under the part 52.

Further, in the case shown in the figure, the first moving body 41
Although the second moving body 42 is mounted on the base plate 36 so as to be movable in the front-rear direction, the second moving body 42 is also mounted on the base plate 36 so as to be movable in the X direction. Directly,
It may be mounted on the base plate 36 so as to be movable in the X direction and the Y direction.

In this case, the carrier glass 43a for the roll film and the carrier glass 4 for the sheet film are used.
When the position 7a is selectively set at the position of the projection optical path passing portion 53a, both moving bodies 41 and 42 are configured to move in the X direction.

(Second Embodiment) Next, a film carrier according to a second embodiment of the present invention will be described with reference to FIG. 4 which well illustrates the features of the present embodiment. FIG. 4 shows storage means for the image position before rewinding. Since other configurations and operations are the same as those of the first embodiment, the same components are denoted by the same reference numerals and description thereof will be omitted.

[0177] As shown in FIG.
For the roll film F _RM which is attached, stored in a storage unit of the mark sensor 501 which forms the storage means memory rewind operation is performed is not shown to measure the number of marks M from the projected image to the film transport is stopped I do. Thereafter, when a memory loading operation is performed, the film _FRM is transported by the number of stored marks, so that an image before rewinding is immediately searched.

In the first embodiment, there is a possibility that an error may occur in the measurement of the moving amount of the film during the film conveyance, such as when the roll film slips on each roller of the roll film conveyance unit. However, in this second embodiment, image 1
Since the number of marks M attached to each mark is measured, the accuracy of the search is improved because the number of marks M is not affected by the film transport state.

In the above description, the means for measuring the film transport amount shown in the first embodiment by the number of pulses and the means for measuring the film transport amount by the number of marks attached to each image shown in the second embodiment are described. Although described independently of each other, a film carrier may be used in combination.

In this case, it is first determined whether or not the image is a marked image. If there is no mark, this is performed by means for measuring the number of pulses. Thereby, any roll film can be applied.

(Third Embodiment) Next, a film carrier according to a third embodiment of the present invention will be described with reference to FIG. 5, which clearly shows the features of this embodiment. FIG. 5 shows an overall view of the film carrier.

As shown in FIG. 5, a reel presence / absence detection sensor (in this case, a reflection type sensor) 601 is provided. Roll film F _R performs memory rewind operation is loading standby state.

However, in order to search for an image formed on another roll film, when the previous roll film is removed from the roll mounting shaft 54, the reel presence / absence detection sensor 601 determines that there is no reel, and the memory rewind operation causes The data stored in the embodiment is canceled.

Thus, malfunction of another roll film due to the stored data of the image position on the previous roll film is prevented.

Since other configurations and operations are the same as those of the above-described embodiments, the same components are denoted by the same reference numerals and description thereof will be omitted.

In each of the above embodiments, the storage means is only the roll unit 32 which is a roll film carrier. Conversely, while searching for a sheet film, it is necessary to temporarily stop, search for a roll film, and search for a sheet film again. Is also conceivable. In this case as well, if the sheet film carrier has an automatic search function, it is of course conceivable to provide storage means for storing the image position during search.

[0187]

As described above, according to the present invention,
In the case of a microfilm carrier that can be switched between a roll film and a sheet film, when searching for an image formed on the roll film in the projection optical path passage section, temporarily suspending and rewinding to the roll film supply section Since the storage means for storing the position of the image searched at the projection optical path passage unit at that time is provided, when searching again from the same image position, the previous image position is determined based on the data stored in the storage means. Therefore, it is not necessary to search for the previous image position while viewing each image, and the efficiency of the search operation can be improved again.

[0188]

Further, by providing a transport means for transporting the roll film to the image position searched in the projection optical path passage portion stored in the storage means, it is possible to automatically return to the image position before the search was interrupted. Therefore, the search operation efficiency can be further improved.

Further, by providing a means for stopping the rewinding of the roll film when the roll film presence / absence detection sensor detects that there is no roll film at the time of rewinding at the roll film supply section of the roll film, the roll film can be completely removed. Since the roll film is not rewound to the roll film supply unit and is waited in the roll film transport unit, it is not necessary to set the roll film in the roll film supply unit again, and the search can be performed quickly.

Further, a reel presence / absence detection sensor is provided. When the reel presence / absence detection sensor rewinds the roll film to the roll film supply unit, the image position searched in the projection optical path passage unit at that time is stored in the storage unit. By providing a means for deleting the data stored in the storage means when it is detected that there is no reel in the state in which the reel is wound, the reel of the rolled film is once removed from the roll film supply unit. And the data stored in the image position are erased, so that a malfunction can be prevented in the case of searching after setting the reel of another microfilm in the roll film supply unit.

By providing the above-mentioned microfilm carrier in the image reading section of the image reading apparatus, the image reading workability is improved, and by providing the microfilm carrier in the image exposure section of the image forming apparatus, the image forming workability is improved. Can be planned.

[Brief description of the drawings]

FIG. 1 is a view for explaining a body exterior of a microfilm carrier according to a first embodiment of the present invention.

FIG. 2 is a front view illustrating a roll film transport unit of the microfilm carrier according to the first embodiment of the present invention.

FIG. 3 is a perspective view illustrating a roll film transport unit of the microfilm carrier according to the first embodiment of the present invention.

FIG. 4 is a perspective view illustrating a roll film transport unit of a microfilm carrier according to a second embodiment of the present invention.

FIG. 5 is a view for explaining a body exterior of a microfilm carrier according to a third embodiment of the present invention.

FIG. 6 is a side view of a reader printer provided with a microfilm carrier.

FIG. 7 is a view for explaining a body exterior of a conventional microfilm carrier.

FIG. 8 is a perspective view of each component constituting the microfilm carrier, and FIG.
FIG. 1B shows a roll unit, and FIG. 1C shows an outer case unit.

9 (A) is an enlarged view of FIG. 8 (B), and FIGS. 9 (B) and 9 (C) are views showing a retracting mechanism of a guide roller.

FIG. 10 is a front view illustrating a roll film transport unit of a conventional microfilm carrier.

FIG. 11 is an enlarged view of a main part of FIGS. 2 and 10;

[Explanation of symbols]

400 controller (transportation control means) 401 loading button 402 rewind button 403 memory button 404 knob 203 film sensor (roll film presence / absence detection sensor) 205 disk 206 slit 207 sensor 210 pulse generator (storage means) 501 mark sensor (storage means) 601 Reel presence detection sensor

Claims (6)

(57) [Claims] 1. A microfilm carrier capable of switching between a roll film and a sheet film, wherein a supply section of the roll film and a take-up section of the roll film are separated by a predetermined distance via a projection optical path passage section. Provided,
A roll film unit having a roll film transport unit for transporting the roll film from the roll film supply unit to the roll film winding unit through the projection optical path passage unit is mounted on a base plate, and a carrier glass for a roll film is provided. A glass is positioned at the projection optical path passage section, and is moved to search for an image formed on the projected roll film conveyed to the projection optical path passage section via the roll film transport section of the roll film unit. A first moving body, and a second movement for positioning a carrier glass for a sheet film in the projection optical path passage section and moving the carrier glass to search for an image formed on the sheet film projected by the projection optical path passage section. And the first moving body and the second moving body are integrated in the roll film transport direction. Moving between the base plate and the roll film unit, when moving the carrier glass of the second movable body to the projection optical path passage portion, from the roll film transport unit of the roll film unit to the roll After retrieving the film and retrieving the image formed on the roll film after rewinding to the roll film supply unit, a storage unit for storing the position of the image searched at the projection optical path passage unit at that time. A microfilm carrier characterized by being provided. 2. The microfilm carrier according to claim 1, further comprising a transport unit that transports the roll film to an image position searched in the projection optical path passage unit stored in the storage unit. . 3. A roll film presence / absence detection sensor is provided at an intermediate portion of the roll film carrier side of the roll film conveyance unit of the roll film carrier, and the roll film presence / absence detection sensor is wound around the roll film supply unit of the roll film. 3. The microfilm carrier according to claim 1, further comprising means for stopping rewinding of the roll film when it is detected that there is no roll film during rewinding. 4. A roll film reel detection unit is provided in a roll film supply unit of the roll film unit, and when the roll film is rewound to the roll film supply unit, the reel presence detection sensor passes the projection optical path at that time. Means for deleting the data stored in the storage means when it is detected that there is no reel in a state where the image position searched by the section is stored in the storage means. The microfilm carrier according to claim 1, 2 or 3 . 5. An image reading apparatus, wherein the microfilm carrier according to claim 1, 2, 3, or 4 is provided in an image reading section. 6. An image forming apparatus, wherein the microfilm carrier according to claim 1, 2, 3, or 4 is provided in an image exposure section.