JP3004848B2 - Photo film patrone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic film patrone, and more particularly to a photographic film patrone for displaying the use state of a photographic film.

[0002]

2. Description of the Related Art In conventional photo film patrones in which 135 type photo films are stored, the front end of the photo film is pulled out in an unused state. Therefore, when the photographic film patrone is loaded into the camera, it is necessary to operate while paying attention not only to the patrone main body but also to the leading end of the photographic film, which is troublesome for an unfamiliar user. From this background, US Pat. No. 4,822,322 discloses a photographic film cartridge in which all of the photographic film is stored in a patrone body in an unused state, and the leading end of the photographic film is sent out from the photographic film discharge port by rotating a spool.
No. 75, No. 4,834,306, and Japanese Patent Application Laid-Open No. 3-267932 by the present applicant.

It has been proposed in Japanese Patent Application Laid-Open No. 3-179341 to use a photographic film cartridge having the above functions as a storage container for a developed photographic film. According to this, the developed photo film can be wound around the patrone body as it is long, and when necessary, the spool is rotated to feed out the front end of the developed photo film and then pulled out to a desired frame position. Therefore, not only is it convenient for storage and storage, but also there is an advantage that the operation of a device for handling the developed photographic film, for example, a photographic printer, a film video player, etc., becomes simple and easy to automate.

[0004] However, when the patrone body containing unused photographic film is also used for storing the developed photographic film, if the leading end of the photographic film is completely entangled in the patrone body, the appearance of the patrone is reduced. Is indistinguishable whether the photographic film stored therein is unused, photographed, or developed. For this reason, an unused photo film or an undeveloped photo film after shooting may be accidentally pulled out of the patrone, or a shot or processed photo film may be mistakenly regarded as an unphotographed one and loaded again into the camera. Accidents such as use and mistakes may occur.

In order to solve such a problem, Japanese Patent Laid-Open Publication No.
According to Japanese Patent No. 177835 and US Pat. No. 5,200,777, a display function is added to a patrone body for storing a photographic film, and the stored photographic film is unused, in the middle of photography, photographed, and further developed. It is known that whether or not it can be easily identified from the appearance.

[0006]

As described above, there is a great advantage in enabling the photographic film usage to be easily identified from outside the patrone main body. In this case, however, it is necessary to cope with the photographic film usage. In addition to simply and appropriately switching the display, it is necessary to ensure that the switching state is maintained after the display is switched. That is, since the use condition of the photographic film can be identified only by the above-mentioned display of the patrone main body, the display is switched by vibration or impact, or the display is switched by a simple operation of the user, for example. In this case, the reliability of the display itself is lost.

The present invention has been made in view of the above problems, and has at least three display modes of unused, photographed, and developed with respect to the use state of the photographic film, and the switching of these displays is simple and easy. It is an object of the present invention to provide a photographic film cartridge which can perform the switching accurately and can surely keep the switching state.

[0008]

In order to achieve the above object, a photographic film patrone of the present invention is movably incorporated in a patrone main body, and each of an unphotographed display position, a photographed display position, and a developed display position. A display board to be moved to three different positions; locking means for locking the movement of the display board at each of the three positions; and which of the three positions the display board is formed on the outer wall of the patrone main body. A display window for displaying, a linking means for moving the display plate locked at the non-photographed display position to the photographed display position in conjunction with the rotation of the spool, and a display window formed on the outer wall of the patrone main body and associated with the photographed display position. And an insertion port for a moving member for moving the stopped display plate to the developed display position.

In the photographic film patrone according to the present invention, three display windows are arranged along the moving direction of the display panel, and the three positions of the display panel are displayed through different display windows. It was done.

According to a third aspect of the present invention, in the photographic film patrone, a second display panel separate from the display panel is movably incorporated in the patrone main body, and the three display windows are provided on an outer wall of the patrone main body. And a fourth display window, and an insertion port for a moving member for moving the second display panel to the display position.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 5, the photo film cartridge 9
A cartridge 12 around which a photo film 11 is wound is rotatably housed in a cartridge body 10. The patrone main body 10 is composed of an upper case 13 and a lower case 14 made of an integrally molded product of resin, and a photographic film discharge port 15 is formed on a joint surface. The photo film outlet 15 is provided with a lid member 16 for preventing light from entering therethrough. The spool 12 has both ends exposed on the side surface of the cartridge body 10 so as to engage with a spool drive mechanism on the camera side. The light-blocking member provided at the discharge port 15 is not limited to the lid member, and light-blocking telem, cloth, sponge, electric flocking, or the like may be used.

Further, inside the upper and lower cases 13 and 14,
Partition walls 13a and 14a are provided integrally, and the inside of the patrone main body 10 is divided into a display panel storage room 10a and a film storage room 10b.
And divided into Display board storage room 10a of spool 12
The gear 12a is formed integrally with the shaft part on the side. In addition, three display windows 17, 18, and 19 for displaying the use state of the photographic film 11 are opened on the side of the patrone body 10 on the side of the display board storage room 10a. The display board 20 is movably stored.

As shown in FIG. 1, the display plate 20 has parallel guide portions 20a, 20b, and 20c formed on the back surface thereof and guide rods 13b formed integrally with the upper and lower cases 13, 14. 14b are fitted and move in parallel, and are arranged so as to be able to freely enter and exit from the back side of the display windows 17 to 19. A triangular protrusion 21 is formed at one end of the display plate 20 to engage with a gear 12a formed on the spool 12, and an elastically deformable arm 22 is provided at a side portion. Further, a moving piece 23 is formed at an end different from the side where the triangular projection 21 is formed. In addition, the display board 2
The surface 0 is colored differently from the patrone body 10, for example, red.
19, this “red color” can be observed.

Further, inside the display panel storage chamber 10a, two engagement projections 25 and 26 are provided along the moving direction of the display panel 20.
Are juxtaposed. These engagement projections 25 and 26 engage the arm 22 to lock the display panel 20. Openings 27 and 28 are formed in the outer peripheral wall of the cartridge body 10 so as to be on the same straight line as the engagement projections 25 and 26. The openings 27 and 28 are for allowing a predetermined moving jig to enter the patrone main body 10, so that the locking position of the display panel 20 can be changed. On the inner wall of the side portion of the upper case 13, a rod-shaped projection 29 protruding toward the display panel storage chamber 10a is formed.

When the arm 22 is engaged with the first engagement projection 25, as shown in FIG. 1, the rear end of the display plate 20 abuts against the inner wall of the patrone main body 10, and moves in the retreating direction. Are prevented, and the display windows 18 and 19
The movement to the side is also prevented, and is locked at the first locking position (unphotographed display position). Then, the rear end is exposed to the display window 17.

When the display plate 20 is locked at the non-photographing display position, the triangular projection 21 meshes with the gear 12a to lock the rotation of the spool 12 in the photographic film feeding direction. When the spool 12 is rotated in the photographic film feeding direction by the spool driving mechanism, the spool rotational force is transmitted to the display panel 20 via the gear 12a and the triangular projection 21.
It is moved in conjunction with the rotation of the spool 12. The photographic film cartridge 9 is assembled in a state where the display plate 20 is locked at the non-shooting display position, and is shipped.

When the arm 22 is engaged with the second engaging projection 26, the arm 22 is held between the two engaging projections 25 and 26 as shown in FIG.
Is locked at the second locking position (the photographed display position), and its front end projects into the display window 18. When the display plate 20 is locked at the photographed display position, the engagement between the triangular protrusion 21 and the gear 12a is released, so that the spool 12 can be freely rotated in the photographic film feeding direction.

When the arm 22 gets over the second engagement projection 26, as shown in FIG.
The front end of the arm 22 comes into contact with the inner wall of the cartridge body 10, and the rear end of the arm 22 comes into contact with the front wall of the engagement projection 26. Therefore, the front end is locked at the third locking position (developed display position). Part is exposed to the display windows 18 and 19.

Each state of the photographic film 11 stored in the patrone main body 10 is identified by which of the display windows 17 to 19 the "red" of the display panel 20 is exposed. As shown in FIG. 6A, when "red" is exposed only in the display window 17, it indicates that the stored photographic film has not been photographed. Also, when "red" is exposed only on the display window 18 as shown in FIG. 3B, it means that the image has been photographed and has not been developed, and as shown in FIG. , Display windows 18 and 1
In the case where "red" is exposed in both of the images No. 9 and "No. 9", it indicates that the image has been developed. Therefore, when taking out the photographic film cartridge 9 from the camera or the film developing device, it is possible to externally display the state of the photographic film by locking the display plate 20 at an appropriate position. Become.

The operation of the photographic film cartridge configured as described above will be described. Until the user purchases the photo film patrone 9 and loads it into the camera, the photo film patrone 9 has the surface of the display panel 20 protruding only through the display window 17 so that the photo film is not photographed. Is displayed. At this time, since the surface of the display panel 20 is colored in a color different from that of the patrone main body 10, for example, "red", "red" is presented on the display window 17. For this reason, the user only has to observe the display window 17 to identify whether or not “red” can be confirmed, and thus can easily determine the usage status of the stored photo film.

Further, since the arm 22 and the first engaging projection 25 are engaged with each other to lock the display panel 20, as shown in FIG. Even if is pressed by mistake, the display plate 20 does not move by contacting the bar-shaped projection 29. Therefore, the display content of the display panel 20 does not change. Further, since the triangular projection 21 meshes with the gear 12a and locks the rotation of the spool 12 in the direction in which the photographic film is sent out, the unexposed photographic film 11 is not erroneously sent out of the cartridge body 10.

When the user loads the photo film cartridge 9 in a predetermined position of the camera, a spool drive mechanism provided on the camera side is engaged with the end of the spool 12. Then, the spool 12 is rotated in the direction in which the photo film is sent out, and the photo film is sent out from the photo film discharge port 15.

At this time, since the gear 12a and the triangular projection 21 of the display panel 20 are engaged, the display panel 20 is urged in the rotation direction of the spool 12. Further, guide portions 20a to 20c formed on the display panel 20 are provided with guide bars 13b and 14b.
b, the urging force in the rotation direction of the spool 12 is converted into a linear urging force in the direction of the display windows 18 and 19. Then, the arm 22 engaged with the first engagement protrusion 25 is bent by the urging force, gets over the engagement protrusion 25, and fits between the arm 22 and the second engagement protrusion 26. At this moment, the engagement between the gear 12a and the triangular protrusion 21 is released, so that the display plate 20 is released from the urging force and is locked as it is. Then, the display plate 2 is displayed on the display window 18.
“Red” of 0 is presented, and the photographed state is displayed.

Thereafter, the photographing is repeated by the exposure mechanism of the well-known camera, and when the photographing of all the frames of the photographic film 11 is completed, the photographic film 11 is rolled into the cartridge body 10 again. Then, after completely winding up the leading end of the photo film 11, the photo film cartridge 9 is taken out of the camera. Since the photographic film cartridge 9 taken out of the camera changes its "red" presentation position to the display window 18, it can be recognized at a glance that the photographed film has been photographed, and the user mistakenly photographs the photographed film. 11 can be prevented from being exposed.

At the developing station, the developer observes the display windows 18 and 19 of the photographic film cartridge 9 and displays them.
Only after confirming that the display is in the undeveloped state by presenting “red” only, development processing is performed. Then, when the predetermined developing process is completed, the developer inserts a predetermined moving jig through a display window 17 opened from the side surface to the outer peripheral surface of the patrone main body 10 and performs a sliding movement operation of the display plate 20. . The distal end of the moving jig inserted from the display window 17 abuts on a moving piece 23 provided at the rear end of the display panel 20. When the moving jig is further pushed in to urge the moving piece 23, the arm 22 bends and gets over the second engagement projection 26, and the display plate 20 is slid to the developed display position. Then, "red" on the display panel 20 is displayed on both the display windows 18 and 19, and it is displayed that the photographic film cartridge 9 is in a developed state. Also, in the manufacturing process, the display plate 20 once moved to the developed display position for operation check inserts the moving jig through the opening 28 and presses the hook 22a formed at the tip of the arm 22 in the retreating direction. By doing so, it is possible to easily return to the non-photographed display position.

In the above-described embodiment, a plurality of display windows are opened, and the state of the photographic film is displayed depending on which display window the display panel is exposed to. A character portion such as "photographed", "photographed", "developed" or the like may be formed, and the display plate may be slid so that the character portion according to the situation appears in one display window. According to this embodiment, characters indicating a state are displayed on the display windows, so that it is not necessary to selectively observe a plurality of display windows or to remember the meaning of each display window, which is easier. The state of the photo film patrone can be identified.

FIGS. 7 and 8 show a second embodiment of the present invention, in which a second display panel is provided in addition to the above-mentioned display panel, and partially exposed and completely exposed. It can be displayed. Members common to the embodiment shown in FIG. 1 are denoted by common reference numerals. In the photographic film cartridge of this embodiment, a second display panel 30 is provided at a position facing the above-described display panel 20 with the spool 12 interposed therebetween. The second display panel 30 is rotatably disposed around a shaft 31, and has an end 30 a exposed through an opening 32 formed on the outer peripheral surface of the cartridge body 10. A projection 33 is formed at the center of the opening 32 so as to be orthogonal to the rotation surface of the second display panel 30.

As shown in FIG. 7A, the end 30a of the second display panel 30 has a protrusion 33 and an upper opening end 32a.
Is locked at a position (completely exposed display position) retracted from the back surface of the display window 35 formed on the side surface of the patrone main body 10. When the end 30a is sandwiched between the lower opening end 32b and the projection 33 as shown in FIG. 3B, the surface of the end 30a projects from the display window 35 (partially exposed (Display position). This second
The locking position of the display plate 30 can be changed by inserting a sharp member such as a pen tip through the opening 32 and pressing the end 30a to get over the projection 33.
The second display panel 30 is locked with the fully exposed display position shown in FIG.

As shown in FIG. 8A, when the second display panel 30 is not projected from the display window 35, it means that the image is shot on all the frames of the photographic film. As shown in FIG. 7, when the second display panel 30 is exposed to the display window 35, it is indicated that only the frame in the middle has been photographed. Therefore, when the photographing is completed in the middle of the photo film, the user can open the opening 32.
By moving the end portion 30a of the second display panel 30 from the opening end 32a side to the opening end 32b side via the, the display window 35 is provided with a partially exposed display. In addition, on the surface of the second display plate 30, the display slide plate 20 and the patrone main body 1 described above are provided.
If a color different from any one of 0 is colored, the displayed content can be more clearly identified.

As the resin material of the patrone body 10 and the spool 12 described above, a thermoplastic resin material is preferable in view of suitability for mass production, price, etc., and contains 0.05% to 3.00% by weight of carbon black as a light-shielding agent. Whatever is used may be used. Further, if necessary, such a resin as a lubricant such as silicone oil, an antistatic agent, an inorganic or organic pigment such as titanium oxide, a processing aid such as zinc stearate, an antioxidant, a nucleating agent, a plasticizer, and the like. You may make it contain.

As the resin, polystyrene resin, impact-resistant polystyrene resin, styrene-acrylonitrile copolymer resin, styrene-acrylonitrile-butadiene copolymer resin, polypropylene resin, high-density polyethylene resin, polyethylene terephthalate resin, polybutylene terephthalate resin , A polycarbonate resin, a polyvinyl chloride resin or a modified resin thereof is suitable. In particular, when considering dimensional accuracy, physical strength, ultrasonic welding suitability, etc., the melt flow rate is 1.0
Impact-resistant polystyrene resins containing 0.1 to 10% by weight of synthetic rubber of up to 10.0 g / 10 min, preferably 2.0 to 8.0 g / 10 min, particularly preferably 2.5 to 7 g / 10 min are preferred. Other desirable characteristics of this resin include a flexural modulus of 15,000-30,000 kg / cm ² , preferably 1,8000-2, from the viewpoint of preventing deformation.
8,000 kg / cm ^2, particularly preferably 20,000~28,000kg / cm ^2, Vicat softening point (15 kg load) 80 ° C or higher, preferably 85 ° C or more, and particularly preferably 90 ° C or higher.

The carbon black contained in such a resin is added to secure light-shielding properties. Examples of the classification according to the carbon black production method include furnace method carbon black, channel method carbon black, thermal method carbon black, and the like, but photographic adverse effects (fog generation, decrease in sensitivity or increase in sensitivity).
Less, or in terms of light shielding, the average particle size is 10 to 80
Furnace carbon black having a mμ of PH5 to 9 is preferable, and furnace carbon black having a pH of 15 to 50 mμ and PH6 to 8 is particularly preferable.

As commercially available products, for example, carbon blacks # 20 (B), # 30 (B), # 33 (B), # 40 (B), # 41 (B), # 44 manufactured by Mitsubishi Kasei
(B), # 45 (B), # 50, # 55, # 100, # 600, # 2200 (B), # 2400 (B), MA
8, MA11, MA100, etc. For overseas products,
For example, Cabot Black Pearls 2, 46, 70, 71, 74, 8
0,81,607 etc., Regal 300,330,400,660,991, SRF-S etc., S
terling 10, SO, V, S, FT-FF, MT-FF and the like. In addition, Ashland Chemical's Uniteel R, BB, 15,102,
3001,3004,3006,3007,3008,3009,3011,3012, XC-3016, XC
-3017, 3020, etc., but not limited thereto.

The particle size of the furnace carbon black is 10
If it is less than mμ, the kneadability with the resin is poor, and the light-shielding property and the physical strength are deteriorated. Conversely, if it exceeds 100 mμ, the dispersion is good but the light-shielding ability is inferior. If the carbon concentration is increased to secure the light-shielding property, the physical strength is reduced and the moldability is deteriorated, so that it is not practical. In addition, many carbon blacks having a pH exceeding the range of 5 to 9 tended to cause photographic adverse effects and could not be used.

The amount of furnace carbon black added is
From the viewpoints of securing light-shielding properties, injection moldability, and securing the physical strength of the patrone main body, 0.05% by weight to 3.00% by weight is preferable. If the addition amount of carbon black is less than 0.05% by weight, the light-shielding property is insufficient, and if it exceeds 3.00% by weight, the physical strength of the patrone body is reduced, and the water absorption rate is increased. Strips and the like are generated, resulting in poor appearance and deterioration of surface strength.

As the light-shielding material, an inorganic pigment such as titanium oxide, red iron oxide, calcium carbonate, or an organic dye may be used in addition to carbon black.

As a method for imparting lubricity to the patrone main body or the spool, there are a method of adding a lubricant to a resin for molding them and a method of applying a lubricant to a molded article. Examples of the lubricant include silicone oils, higher fatty acid amides such as oleic acid amide and erucic acid amide, metal salts of higher fatty acids such as zinc stearate, higher alcohol esters, fatty acid esters of polyhydric alcohol esters, and the like. It is not limited.

The silicone oil added to the patrone body or spool is described in JP-A-62-286.
Preferred are dimethylpolysiloxane and carboxyl-modified silicone oil described in JP-A No. 043 or JP-A-62-284355. The addition amount of the silicone oil is 0.05% by weight to 5.0% by weight, preferably 1.
It is between 0% and 3.0% by weight.

If the amount is less than 0.05% by weight, the desired lubricating effect cannot be obtained. If the amount exceeds 5.0% by weight, the resin slips in the screw of the injection molding machine, which not only lengthens the molding cycle but also increases the molding cycle. The amount of silicone that exudes on the molded product surface increases, and the exuded oil is transferred to the photographic film inside the patrone body, causing photographic adverse effects such as hindering the diffusion of the developing solution to the photographic film during photographic film development. I do. Further, in the ultrasonic seal, the adhesion between the upper and lower cases is reduced.

Silicone oil has a viscosity of 1000 at 25 ° C.
Preferably it is ~ 60000CS. 1000 at 25 ° C
Below CS, bleed-out is severe, affecting photographic performance. If it exceeds 60000CS, the kneadability with the resin is poor and it cannot be used. In addition, various modified silicone oils such as a fluorine-modified silicone oil are commercially available other than the above, but most of them have a bad influence on the photographic properties of the photographic film. is there. It could not be used for photographic film cartridges because of insufficient lubricity or severe thermal decomposition during injection molding.

[0041]

As described above, according to the present invention, the display plate movably incorporated in the patrone main body is locked at the three positions of the non-photographed display position, the photographed display position, and the developed display position. In addition, a display window for indicating which of the three positions the display plate has moved is formed on the outer wall of the patrone main body. By observing this display window, the stored photographic film is not photographed and photographed. Whether the state is completed or developed can be easily identified.

Also, the display plate locked at the non-photographed display position is moved to the photographed display position in conjunction with the rotation of the spool in the direction in which the photographic film is sent out.
"No shooting" automatically when the camera performs the film feeding operation
The display is changed to the "photographed" display, and the occurrence of double exposure due to forgetting to switch the display can be prevented. Also,
When moving the display plate locked at the photographed display position to the developed display position, it is only necessary to insert the moving member from the display window formed from the side surface to the outer peripheral surface of the patrone main body and urge the display plate, The moving operation is simple.

Further, the display panel can be moved only in the parallel direction, and the display panel is locked by engaging the forward and backward directions of the display panel with the patrone body at two positions. The display plate is securely locked, and the engagement is released and the display is not switched to the extent that vibration or impact is applied. In addition, since the display panel is completely incorporated in the patrone main body and only its surface is exposed from the display window, the display is not switched by touching the surface of the display panel.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing a state where a display plate is locked at a non-imaging display position.

FIG. 2 is a cross-sectional view of a main part showing a state where the display plate is locked at a photographed display position.

FIG. 3 is a sectional view of a main part showing a state where the display plate is locked at a developed display position.

FIG. 4 is an explanatory diagram showing a state of the display panel pressed by mistake.

FIG. 5 is an exploded perspective view of a photographic film cartridge embodying the present invention.

FIGS. 6A and 6B are explanatory diagrams showing a display state of the display panel, wherein FIG. 6A shows an unphotographed state, FIG. 6B shows a photographed state, and FIG.

FIGS. 7A and 7B are cross-sectional views of a principal part showing a second embodiment of the state display method of the present invention, wherein FIG. 7A is a partially exposed display position, and FIG. Each state is stopped.

FIGS. 8A and 8B are explanatory diagrams showing a display state of a second display panel, and FIG.
Indicates a completely exposed state, and (b) indicates a partially exposed state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cartridge main body 11 Photo film 12 Spool 12a Gear 13b, 14b Guide rod 17, 18, 19, 35 Display window 20 Display plate 20a, 20b, 20c Guide part 21 Triangular protrusion 22 Arm 25, 26 Engagement protrusion 30 2nd display plate

Claims (3)

(57) [Claims] 1. A photographic film patrone wherein a spool around which a photographic film is wound is rotatably housed in a patrone main body, and the photographic film is sent out of the patrone main body by rotating the spool. A display plate that is movably incorporated and is moved to three different positions, ie, a non-photographed display position, a photographed display position, and a developed display position, and a latch that locks the movement of the display plate at the three positions. Means, a display window formed on the outer wall of the patrone main body, for displaying which of the three positions the display plate has moved, and a display plate locked at the non-shooting display position interlocked with the rotation of the spool. Interlocking means for moving the display plate to the photographed display position and the display plate formed on the outer wall of the patrone main body and locked at the photographed display position to the developed display position. Photographic film cassette characterized by having a insertion opening of the moving member to be dynamic. 2. The photographic film according to claim 1, wherein three display windows are arranged along a moving direction of the display panel, and the three positions of the display panel are displayed through different display windows. Patrone. 3. The patrone main body includes a second display plate movably incorporated separately from the display plate, and the patrone main body outer wall has a fourth display window in addition to the three display windows. 3. A photographic film cartridge according to claim 2, further comprising an insertion port for a moving member for moving the second display panel to the display position.