JPH071366B2 - Image projection device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an image projection apparatus for projecting a micro image on a micro film capable of recording various information with high density.

More specifically, a film carrier that holds a microfilm on which microchannel images of two channels are printed in the width direction, and an image projection apparatus including a carrier moving device that moves the film carrier in the width direction of the microfilm. Regarding

[Prior Art] Conventionally, in a microfilm reader which is the above-described image projection device, the carrier moving device has a manual operation tool such as a knob or a handle, and an interlocking mechanism that mechanically operates the manual operation tool and the film carrier. It was composed of a mechanism.
When switching channels, the user operates the manual operation tool to move the film carrier in the film width direction while observing the micro image projected on the screen, so that the relative position between the film and the screen is changed. Had changed.

However, in the case of such a configuration, when projecting a micro image whose projected channel is different from the currently projected micro image, the manual operation tool is operated one by one to move the film carrier. In addition, it is necessary to carefully operate the manual operation tool in order to align the relative position of the film and the screen and completely project the necessary micro image on the screen. The projection could not be performed efficiently.

Therefore, the present applicant previously provided a drive device for the carrier moving device, and the film so that the entire microfilm width direction of the microimage of the channel different from the current channel is located at a predetermined position on the screen. It has been proposed to provide a channel switching means for driving and controlling the drive device so as to automatically move the carrier so that the channel can be switched easily.

[Problems to be solved by the invention]

However, in the above-mentioned microfilm reader,
There are the following problems.

That is, the distance between the micro images (I _A ), (I _B ) of both channels in the microfilm (F) in which the micro images of two channels are imaged in the width direction is shown in FIG. D) As shown, it is not always constant for each film (F). This is because various manufacturers imprint micro images (I _A ) and (I _B ) according to their respective standards.

Therefore, in a certain microfilm, even if all the microimages of any channel are projected on the screen, if microfilms with different microimage imprinting standards are used, the microimage of one channel or both channels However, there is a possibility that there may be an inconvenience that not everything is projected on the screen.

In this case, in order to project all the micro images of any channels on the screen, the film carrier is manually moved after switching the channels, or the substrate is changed every time a film having a different micro image imprinting standard is used. It will be necessary to make fine adjustments internally.

In view of the above situation, it is an object of the present invention to make it possible to always switch channels even when microfilms having different microimprinting standards are mixed and used.

[Means for solving problems]

The image projection apparatus according to the present invention is characterized by a film carrier that holds a microfilm on which microchannel images of two channels are printed, and a carrier moving device that moves the film carrier in the width direction of the microfilm. In an image projection device equipped with
Input means for inputting a movement amount of the film carrier in the film width direction, a driving device for driving the carrier moving device, detection means for detecting a current position of the film carrier, and a movement amount input by the input means. Judging means for judging whether the film carrier has moved by the movement amount inputted by the input means by comparing with the detection result of the detecting means, and driving control of the drive device based on the judgment result of the judging means. Therefore, it has a channel switching means for moving the film carrier so as to project a micro image of a channel different from the current channel at a predetermined position.

[Action]

That is, when using a micro film having a different micro image imprinting standard, the film movement amount setting means temporarily sets the amount corresponding to the distance between the micro images of the two channels of the micro film as the movement amount of the film carrier. Once set, the channel can be switched with a small number of steps so that the micro image of any channel is always located at a predetermined position on the screen simply by operating the channel switching means.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, the reader / printer main body (1) is combined with the film carrier (2) and the controller (3) to form a microfilm reader printer.

In this micro film reader printer, a reader mode for enlarging and projecting a micro image (I) on a micro film (F) held on a film carrier (2) onto a screen (4) and a recording paper by an electrophotographic process. It is possible to switch to the print mode for enlarged copying.

In the film carrier (2), as shown in FIG.
A supply reel (5) and a take-up reel (6) are provided, and a microfilm (F) stretched over both reels (5) and (6) is provided with a plurality of guide rollers (7a). ~
It is guided by (7c) and is positioned so as to be in close contact with and sandwiched by a pair of glass plates (8a), (8b) constituting the light irradiation section (8). The center of the light irradiating section (8) coincides with the center (L) of the light flux from the light source (9) when the film carrier (2) is set in the reader printer body (1). . The rotary shafts (10), (11) for the two reels (5), (6) are respectively the transmission mechanism (12),
Each of the motors (14) and (15) is interlocked with each other via (13), and by driving one of the motors (14) and (15), the microfilm (F) is either forward or reverse. It is configured so that it can be sent in the direction of.

The take-up reel (6) is pivotally supported by the film carrier (2), but the supply reel (5) is housed in the cartridge (16), and this cartridge (16) is attached to the film carrier (2). It is configured to be removable. The rotation shaft (10) for the supply reel (5) automatically engages with the supply reel (5) with the cartridge (16) mounted on the film carrier (2).

When the cartridge (16) is mounted, if the rotating shaft (10) engages the supply reel (5), the supply reel (5) is instantly rotated counterclockwise in order to remove the slack of the microfilm (F). It is designed to rotate. Then, a delivery belt (17) interlocked with a motor (not shown) is brought into contact with the film surface, and the supply reel (5) is rotated clockwise together with the microfilm (F) so as to be brought into contact with the film surface. Of the film (F) by the peeling belt (18), and the light irradiation with the guide rollers (7a) to (7c) and the pair of glass plates (8a) and (8b) released from the close contact state. The part (8) is passed and wound around the take-up reel (6).

Then, the delivery belt (17) and the peeling belt (18) are separated from the film surface, and the pair of glass plates (8a) and (8b) forming the light irradiation section (8) are brought into close contact with each other. After that, the transfer of the microfilm (F) is performed by the two motors (1
4) and (15).

And by these two motors (14), (15) and the control system (CD) for both motors (14), (15),
It is configured to control the feeding of the microfilm (F) in the longitudinal direction by counting the blips described later, and to stop the microfilm (F) at a predetermined position. In this state, by selecting one of the modes described above, the micro image (I) imaged on the micro film (F) located in the light irradiation part (8).
Can be enlarged and projected on the screen (4) or enlarged and copied on a recording sheet.

By the way, in the microfilm reader printer using this film carrier (2), two types of microfilm (F) can be used. Next, both types of microfilm (F) are used. , And the configuration of a reader printer for supporting both types of film (F) will be described.

In the first type, as shown in FIG. 4 (a), only one micro image (I) is imprinted in the width direction of the micro film (F). Then, a mark for frame search, a so-called blip (M), is imprinted one by one on each micro image (I). This type of microfilm (F) is hereinafter referred to as monotype.

In the second type, as shown in FIG. 4B, two micro images (I _A ) and (I _B ) are imprinted in the width direction of the micro film (F). . This type of microfilm (F) is hereinafter referred to as Duo type. In the duo type, microfilm (F)
The rows of two micro images (I _A ), (I _B ) printed side by side in the longitudinal direction of are called channels, and in each channel, each micro image (I _A ), (I _B ) One blip (M) is imprinted on each.

On the other hand, as shown in FIG. 3, a blip detector (19) is attached to the light irradiation section (8) of the film carrier (2). The blip detector (19) includes a pair of light receiving elements (19
It consists of a) and (19b). Both light receiving elements (19a),
In (19b), the light from the light source (9) is blocked by the blip (M) darker than the base portion of the film (F) in a state where the film carrier (2) is installed in the reader / printer main body (1). The blip (M) is detected by the change in the received light intensity. Then, as the microfilm (F) is sent, a counter (not shown) is counted up each time the blip detector (19) detects the blip (M), and the microimage (I ), (I _A ), and (I _B ) frame numbers are known.

The light receiving elements (19a) and (19b) described above are respectively provided at positions facing the two blips (M) on the duo type microfilm (F). That is, with respect to the duo type microfilm (F), the blip (M) of both channels can be detected by the two light receiving elements (19a) and (19b), and the monotype microfilm (F) can be detected. On the other hand, the blip (M) can be detected by only one light receiving element (19b).

The film carrier (2) when it is installed in a reader printer body (1), a light source (9) the light irradiation portion of the film carrier (2) from (8) Micro Image (I) in, (I _A) , (I _B ) is transmitted. In the case of the reader mode, the light after passing through the optical system (IF) including the projection lens (20) and a plurality of mirrors (not shown),
The image is enlarged and projected on the screen (4).

The enlargement magnification by this optical system (IF) is usually determined by measuring the width of the film (F) of the monotype micro image (I) ((d _V ) in FIG. 4 (a)) on the screen ( 4)
The magnification is set so as to be approximately equal to the vertical dimension ((D _V ) in FIG. 2). At this time, in the monotype micro image (I), the center line along the longitudinal direction of the film ((C _O ) in FIG. 4 (a)) is the upper and lower center lines of the screen (4) (see FIG. 2). (C _S )), which is projected as shown in FIG. Therefore,
In this state, when a duo-type microfilm (F) is used as shown in FIG.
A pair of micro images (I _A ), (I _B )
Are projected side by side above and below the screen (4).

Here, by exchanging the projection lens (20), the size of the duo-type micro images (I _A ) and (I _B ) in the longitudinal direction of the film ((d _H ) in FIG. The enlargement magnification by the optical system (IF) can be changed so that it is not substantially equal to the horizontal dimension (( _DH ) in FIG. 2) of the screen (4). However, as it is, as shown in FIG. 6 (c), both of the two-channel micro images (I _A ) and (I _B ) are projected on the screen (4) only partially.

Therefore, in order to cope with the case of using the duo type microfilm (F), the entire film carrier (2) is moved in the width direction of the film (F) so that the relative position between the film (F) and the screen (4). Can be changed. Therefore, when the duo type microfilm (F) is used, for example,
As shown in FIG. 6 (d) or (f), the entire micro image (I _A ) or (I _B ) of either channel is
It can be projected on the screen (4).

Next, a configuration for that purpose will be described. First, the carrier moving device (V) for moving the film carrier (2) in the width direction of the film (F) will be described.

As shown in FIG. 3, the film carrier (2) has two elongated holes (21a), (2a) along the width direction of the film (F).
1b) is formed, and the guide pins (23a) and (23b) fixed to the moving table (22) are fitted into the elongated holes (21a) and (21b) in a state that prevents them from coming off. The film carrier (2) and the moving table (22) are attached so as to be relatively movable in the width direction of the film (F). Further, the rack (24) fixed to the movable table (22) is positioned so as to be exposed from the other long hole (25) formed in the film carrier (2). A pinion gear (26) that engages with the rack (24) and a motor (27) fixed to the film carrier (2) are interlockingly connected.

That is, the film carrier (2) is configured to be moved in the width direction of the film (F) with respect to the moving table (22) by rotating the motor (27), which is an example of the drive device, in the forward and reverse directions. There is. The motor (27) is further provided with a rotary encoder (28) for converting the rotation speed of the motor (27) into an electric signal and outputting the electric signal. The output signal from the rotary encoder (28) is input to a microcomputer (MC) that constitutes a control system (CD), which will be described later, and the film carrier (2) and the moving table (22). ) And relative position can be detected.

When using the duo type microfilm (F), if the reader mode, the whole of the micro image of one channel (I _A) or (I _B) is adapted to be projected onto the screen (4) There is. Specifically, the center line ((C _A ) or (C _B ) in FIG. 4B) of the micro image (I _A ) or (I _B ) of one channel along the longitudinal direction of the film is
The upper and lower center lines of the screen (4) ((C _S ) in FIG. 2) are aligned with each other, and the micro images (I _A ) and (I _B ) on the screen (4) are the sixth image. Figure (d) or (f)
It is projected as shown in.

Then, by switching the channel switching knob (CK), which is an example of the channel switching means, the film carrier (2) is projected so that the entire micro image (I) of the other channel is projected on the screen (4). In order to move, the drive control of the motor (27) is performed.

The drive control of the motor (27) during channel switching will be further explained. When the channel switching knob (CK) is switched, the motor (27) is driven in a predetermined direction by a predetermined amount corresponding to the distance between both channels. The film carrier (2) is moved in the width direction of the film (F). Whether or not the movement amount of the film carrier (2) has reached a predetermined amount is determined by comparing the detection information from the rotary encoder (28) with the drive control signal given to the motor (27). This causes the entire micro image (I _A ) or (I _B ) of the other channel to be projected on the screen.

Further, in this microfilm reader printer, the predetermined motor drive amount corresponding to the distance between both channels described above can be arbitrarily changed and set.

That, in duo type microfilm (F), a micro image of both channels (I _A), (I _B) the distance between, as shown in FIG. 4 (b) to (d), the film (F) It is not always constant for each. This means that different manufacturers use different microimage (I
_{Because A} ) and (I _B ) are imprinted. Therefore,
When using a certain film (F), the film (F)
Two-channel micro image (I _A ),
Distance between (I _B ) (in Figure 4 (b) to (d))
(G ₁ ), (G ₂ ), (G ₃ )) By changing and setting the drive amount of the motor (27) to match the desired micro even if the type of film (F) is different. It is possible to avoid the problem that a part of the images (I _A ) and (I _B ) is not projected on the screen (4).

Specifically, it is configured so that the drive amount of the motor (27) can be set to an arbitrary value by the numerical keypad (SS) of the controller (3).

Further, the movable table (22) is fixed to the turntable (29) on the side of the reader / printer body (1) in a state of being slid and fitted externally. Then, by releasing this fixing, the film carrier (2) can be removed together with the moving table (22), and the film carrier (2) holding the roll film is replaced with the fish carrier holding the microfish. (Not shown) etc. can be set.

The above-mentioned turntable (29) is attached to the reader / printer main body (1) so as to be rotatable around the center (L) of the light flux from the light source (9). That is, the vertical direction of the imprinted image is the micro image (I), (I _A ),
Since (I _B) do not always match up and down or in any direction of right and left, if necessary film carrier (2)
Or fish carrier etc. around the center of the light flux (L)
By rotating 90 °, it is possible to always match the vertical direction of the image projected with the vertical direction of the screen (4).

Next, a control system (CD) that controls the operation of the microfilm reader printer having the above configuration will be described.

As shown in FIG. 1, this control system (CD) is mounted on a film carrier (2) and controls a film feed control section (a film feed control unit (F) for controlling the conveyance in the longitudinal direction and the shift in the width direction of the microfilm (F). FC), a controller (3) for setting various operation parameters, and an interface (30).

The film feed control unit (FC) is mainly composed of a microcomputer (MC), and an output signal from the microcomputer (MC) causes the microfilm (F) described above to be reversed in the longitudinal direction. Motor to feed (1
Input to various output devices (OD) such as 4) and (15). One of the output devices (OD) is a motor (27) which is a drive device for the carrier moving device (V) described above.
There is.

This motor (27) is switched between operating and non-operating by turning on and off the first relay contact (32a),
Also, the rotation direction is changed by switching the third relay contacts (32b) and (32c). The first relay contact (32a) is linked to the first relay is turned on and off by the output signal from the microcomputer output port (P4 ₀₎ of (MC) (33a). The second and third relay contacts (32b) and (32c) are interlocked with the second relay (33b) which is turned on and off by the output signal from the output port (P4 ₁ ) of the microcomputer (MC). There is.

Microcomputer (MC) input port (P1 ₀ ) to (P1 ₂ )
Is connected to the rotary switch (34) which is interlocked with the channel switching knob (CK) described above. Also, another input port (P3) of this microcomputer (MC)
Is connected to the rotary encoder (28) described above. Based on the input signal from the encoder (28), the microcomputer (MC) displays the current position information of the film carrier (2) and the film ( Information on the amount of movement of F) in the width direction can be obtained.

Further, the microcomputer (MC) counts up the counter (not shown) in response to the detection of the blip (M) by the blip detector (19) and obtains it from the controller (3) as described above. Based on the comparison with the frame number information, the drive control of the two motors (14) and (15) for feeding the microfilm (F) is performed.

Input port (P
1 ₀₎ ~ (P1 _2), respectively, corresponding contacts (a) ~ (c) rotary switch (34) to become "L" level in the connected state. Further, each of the contacts (a) to (c) corresponds to a stop position in the film width direction of the film carrier (2).

That is, when the rotary switch (34) is connected to the upper first contact (a) in the figure, the upper channel (hereinafter, this channel) of the duo type microfilm (F) with respect to the screen (4). micro image is referred to as <A- channel>) (I _a) is a screen (4)
Film carrier (2) as projected in the center of
Is moved. In this state, the positional relationship between the micro images (I _A ) and (I _B ) on the screen (4) depends on the magnification of the projection lens (20), as shown in FIG.
As shown in. That is, the center line along the longitudinal direction of the film of the micro-image (I _A) of <A- channels>
(C _A ) coincides with the vertical center line (C _S ) of the screen (4).

When the rotary switch (34) is connected to the lower second contact (b) in the figure, the channel of the duo type microfilm (F) below the screen (4) as micro image of the channel is referred to as <B- channel>) (I _B) is projected in the center of the screen (4), the movement of the film carrier (2) is performed. In this state, the positional relationship of the micro images (I _A ) and (I _B ) on the screen (4) is
According to the magnification of 0), it is as shown in FIG. 6 (f) or (g). That, <B- channel> microimage (I _B) in the longitudinal direction of the film to follow the center line of the (C _B)
Coincides with the vertical center line (C _S ) of the screen (4).

Further, when the rotary switch (34) is connected to the third contact (c) at the center of the figure, no matter which type of microfilm (F) is used, the microswitch is arranged along the longitudinal direction of the film (F). The center line (C ₀ ) is the upper and lower center line of the screen (4)
To match (C _S), the film carrier (2) move is performed in (hereinafter this position is referred to as <C-channel>). In this state, the positional relationship between the micro images (I), (I _A ), and (I _B ) on the screen (4) is shown in FIG. 6 (A) if it is a monotype micro film (F). Similarly, in the case of a duo type microfilm (F), it is as shown in FIG.

Then, the positioning of the film carrier (2) when it is moved by the operation of the above-mentioned channel switching knob (CK) is performed as follows.

The microcomputer (MC) can obtain the coordinate value on the coordinate extending in the width direction of the film (F) corresponding to the current position of the film carrier (2) based on the input signal from the rotary encoder (28). It is configured to be able to. On the other hand, the coordinate value corresponding to the distance between the stop positions of the film carrier (2) corresponding to each channel described above is converted by the preset value by the numerical key (SS) of the controller (3). Stored in memory (m).

When any channel is switched by operating the channel switching knob (CK), first, the current channel is judged by a flag or the like. Then, the target coordinate is obtained by adding and subtracting the coordinate value corresponding to the distance between the switched channel and the current channel and the coordinate value corresponding to the current channel, from the input signal from the rotary encoder (28). The motor (27) is configured to be driven in any direction determined by the relationship between the two channels until the obtained detected coordinates match the target coordinates.

The drive control of the motor (27) will now be described a little with reference to the flowchart of FIG.

This flowchart is a channel switching subroutine that is called when the channel switching knob (CK) is switched.

When this subroutine is called, the position of the channel switching knob (CK), that is, which channel is currently selected, is first input port (P1 ₀ ), (P
Determines the state check of the 1 ₂₎ (# 1, # 2).
Now, the channel switching knob (CK) is <C-channel>
Considering the case where it is the routine call is switched to the position of the input port (P1 ₁₎ only at "L" level, coming proceed to step (# 3).

In this step (# 3), the state of the A channel set flag (CSFA) is checked. This flag (CSFA) is
The state changes depending on the position of the channel switching knob (CK) before this routine is called. That is, the A channel set flag (CSFA) is set to "1" when the film carrier (2) is in the <A-channel> position. Although not used in the judgment in the step (# 3), the B channel set flag (C
SFB) is a film carrier (2) <B-channel>
"1" stands when it is in the position.

A channel set flag (CSFA) in step (# 3)
If it is determined that "1" is set on, while the film carrier (2) is in the <A-channel>, the channel selection knob (CK) is set to the <C-channel> position from the <A-channel> position. When this routine is called by switching to the <> position. Therefore,
In this case, the motor (27) for the carrier moving device (V) is driven to move the film carrier (2) from <A-channel> to <C-channel>.
(# 11) Step Proceed to the flow below.

A channel set flag (CSFA) in step (# 3)
If it is determined that "1" is not set to, the film carrier (2) is in the <B-channel>, and the channel selection knob (CK) is set to the <C-channel> position from the <B-channel> position. When this routine is called by switching to the <> position. Therefore, in this case, the motor (27) for the carrier moving device (V) is driven to move the film carrier (2) to <B-
In order to move from <Channel> to <C-Channel>, the flow proceeds to the steps following (# 21).

First, explaining the flow after the step (# 11),
In this flow, based on the information obtained from the rotary encoder (28), the current position of the film carrier (2) is obtained as a film detection coordinate data (E _N) of the coordinate axis extending in the width direction of the (F) (# 11). Then, the movement corresponding to the distance between the <A-channel> and the <C-channel>, which is set in advance by the numerical key (SS) of the controller (3) and stored in the memory (m). to load coordinate data _{(E R) (# 12)} .

Then, the moving target data (E _G ) of the film carrier (2) is obtained from the above-mentioned two coordinate data (E _N ) and (E _R ) (# 13). After that, the output ports (P4 ₀ ) and (P4 ₁ ) are set to the “H” level, and the two relays (33a) and (33b) are set to the “ON” state (# 14). As a result, the motor (27) starts reverse driving, and the film carrier (2) starts moving downward with respect to the screen (4). Then, based on the information obtained from the rotary encoder (28), the detected coordinate data (E _N ) of the moving film carrier (2) is obtained (# 1
5) This data (E _N ) is compared with the movement target data (E _G ) (# 16).

If the detected coordinate data (E _N ) is not equal to the movement target data (E _G ), the process returns to step (# 15) to continue the movement of the film carrier (2). Once detected coordinate data (E _N) is equal to the moving target data (E _G), the output port (P4 ₀₎ "L" first relay in the level (33a) to "OFF" state (# 17 ). As a result, the motor (27) stops driving,
The movement of the film carrier (2) is also stopped. At this time, the film carrier (2) is located in the <C-channel>.

Thereafter, the C channel set flag (CSFC) is set to "1"(# 18), the A channel set flag (CSFA) is reset (# 19), and then the process returns to the main routine.

Next, explaining the flow after the step (# 21),
Similar to the flow from step (# 11) onwards, the detected coordinate data (E _N ) is obtained (# 21), and then the moving coordinate data (E _R )
(# 22). Moving coordinate data (E _R ) at this time
Corresponds to the distance between the <B-channel> and the <C-channel>. Actually, the <A-channel> and <C which were loaded and used in the previous step (# 12) were used.
-Movement coordinate data corresponding to the distance between
It has the same value as (E _R ).

Then, the moving target data (E _G ) of the film carrier (2) is obtained from the above-mentioned two coordinate data (E _N ) and (E _R ) (# 23). Thereafter, the output port (P4 ₀₎ to the "H" level, the first relay (33a) only the "ON" state (# 2
Four). As a result, the motor (27) starts forward rotation drive,
The film carrier (2) starts moving upwards with respect to the screen (4). After that, the rotary encoder (2
8) Obtain the detected coordinate data (E _N ) of the moving film carrier (2) based on the information obtained from (8) (# 25), and compare this data (E _N ) with the movement target data (E _G ). Do (# 2
6).

If the detected coordinate data (E _N ) is not equal to the movement target data (E _G ), the process returns to the step (# 24) to continue the movement of the film carrier (2). Once detected coordinate data (E _N) is equal to the moving target data (E _G), the output port (P4 ₀₎ "L" first relay in the level (33a) to "OFF" state (# 27 ). As a result, the motor (27) stops driving,
The movement of the film carrier (2) is also stopped. At this time, the film carrier (2) is located in the <C-channel>.

Then, the C channel set flag (CSFC) is set to "1"(# 28), the B channel set flag (CSFB) is reset (# 29), and the process returns to the main routine.

If the channel switch knob (CK) is in the <A-channel> or <B-channel> position,
Whether [Subroutine for A channel switching] is called in the judgment of the step (# 1) (# 100), or
The [Sub-routine for switching the B channel] is called by the judgment in the step (# 2) (# 200).

The content of each of the subroutines is almost the same as the flow after the step (# 3), and therefore the illustration and description thereof are omitted. However, when switching from <B-channel> to <A-channel> and from <A-channel> to <B-
When switching to Channel>, the moving coordinate data (E _R )
Distance between <C-channel> and <A-channel>, or <C-channel> and <B-channel>
It is equivalent to twice the distance between and.

In the previous embodiment, the numerical key (SS) of the controller (3)
Operation of the motor (2
The thing which changed and set the drive amount of 7) was explained. Instead, link the variable resistor to the knob or lever,
The drive amount of the motor (27) may be changed and set by changing the reference voltage, which is referred to as film shift amount setting means (SS). Also, as the channel switching means (CK), in addition to the knob described in the previous embodiment,
You may use a button or a lever.

Further, in the above embodiment, in order to move the film carrier (2) in the width direction of the microfilm (F), if the duo type microfilm (F), a micro image of any one of the channels (I _A) or center line along the longitudinal direction of the film (I _B) (FIG. 4 (b) in the (C _a) or (C
_B )) is the vertical center line of the screen (4) ((C in Fig. 2
_S )), so that what is controlled is explained. Instead of this, a micro image of either channel (I _A ).
Or (I _B) the upper edge or lower edge of the screen (4) upper edge or may be controlled to match the lower edge of,
In short, in carrying out the present invention, a micro image (I _A ) or (I
Carrier moving device (V) so that the whole of ( _B ) in the width direction of the film (F) is projected on the screen (4).
The drive device such as the motor (27) may be controlled.

In addition, the microfilm reader printer in the previous embodiment can use either monotype or duotype microfilm (F).
It was designed to be able to switch between two channels. Instead of this, only the duo-type microfilm (F) may be configured to switch between two channels.

Furthermore, the present invention, in addition to the micro film reader printer described in the previous embodiment, the micro image (I), (I _A ),
(I _B) is applicable to microfilm reader which does not have the ability to replicate.

〔The invention's effect〕

As described above, the image projection device according to the present invention is
A film carrier that holds a microfilm on which two-channel microimages are printed in the width direction,
And an image projection device including a carrier moving device that moves the film carrier in the width direction of the microfilm, and an input unit for inputting a movement amount of the film carrier in the film width direction, and driving the carrier moving device. The drive device, the detection means for detecting the current position of the film carrier, and the movement amount input by the input means and the detection result of the detection means are compared, and only the movement amount of the film carrier input by the input means is compared. The film carrier so as to project a micro image of a channel different from the current channel at a predetermined position by controlling the drive unit based on the determination unit that determines whether or not it has moved and the determination result of the determination unit. And a channel switching means for moving the micro film. When using microfilms with different standards, the amount of movement corresponding to the distance between the centers of the microimages of the two channels of the microfilm is once set as the movement amount of the film carrier by the input means, and then the channel is switched. By simply operating the means, the channels can be switched so that the micro image of any channel is projected at a predetermined position, so that the micro image projection work can be performed efficiently regardless of the microfilm imprinting standard. Will be able to.

[Brief description of drawings]

The drawings show an embodiment of a microfilm reader according to the present invention. FIG. 1 is a block diagram of a control system of the microfilm reader printer, FIG. 2 is a front view of the microfilm reader printer, and FIG. 3 is an inside of a film carrier. 4A to 4D are plan views of two types of microfilms, and FIG. 5 is a perspective view showing the positional relationship between the blip detector and the microfilms.
7A to 7G are front views showing the position of the micro image on the screen, and FIG. 7 is a flow chart of the channel switching operation. (2) …… Film carrier, (4) …… Screen,
(27) …… Drive device, (F) …… Microfilm, (I
_A), (I _B) ...... microimage, (V) ...... carrier transport device, (CK) ...... channel switching means, (SS) ...... film shift amount setting means.

Claims (1)

[Claims] 1. An image projection comprising a film carrier for holding a microfilm on which microchannel images of two channels are printed in the width direction, and a carrier moving device for moving the film carrier in the width direction of the microfilm. In the apparatus, an input unit for inputting a movement amount of the film carrier in the film width direction, a drive unit for driving the carrier moving unit, a detection unit for detecting a current position of the film carrier, and an input unit for inputting by the input unit. Judging means for judging whether or not the film carrier has moved by the moving amount inputted by the input means by comparing the moving amount with the detection result of the detecting means; and the drive unit based on the judging result of the judging means. By controlling the drive, the micro image of the channel different from the current channel Image projection apparatus characterized by comprising a channel switching means for moving the film carrier to project a predetermined position.