JPH10142718A - Roll photographic film, and camera, magazine and photographing unit using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a 120 type or 220 type roll photographic film where handling convenience is improved, leakage light is reduced and the number of exposed frames is increased by providing perforation having specified width and specified interval. SOLUTION: This roll photographic film has the perforation whose width is 61.3-72.5mm and whose interval is 10±1mm. Or the film has the perforation whose interval is 20±2mm alternately at both ends in the width direction of the film. Even when the size of a photographic image is different, the position of a photographic image frame is decided from relation to the position of the perforation. Therefore, the number of perforation decided according to the size of the photographic image has only to be detected in the camera. By moving the aperture frame of a variable aperture 143, high image quality is intended in large photographic image frame size and the number of exposed frames is increased in small photographic image frame size.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a 120 type or 22 type.
0-type roll-shaped photographic film, a camera using the same, a magazine or a film holder and a photographing unit, specifically, a roll-shaped photographic film with improved handling convenience,
The present invention relates to a camera, a magazine, and a photographing unit using the same.

[0002]

2. Description of the Related Art A film having a width of 61.3 to 62.5 mm is used.
For a 20-type or 220-type roll-shaped photographic film,
JIS K7512-1994, ISO 732-19
91 or ANSI PH 1.21 and is commonly called a brownie film. It is mainly used for professional use and has a larger photographic screen area than general 135-inch 35 mm film, so that high-quality photos can be obtained.

A 120 type or 220 type roll-shaped photographic film has a roll-shaped film wound around a special spool together with light-shielding paper (also referred to as a leader paper or a trailer paper). And is shielded from light by the spool and light-shielding paper. Because the roll film has no perforation and has various types of photographing screen sizes, winding and photographing are performed using the frame number given to the light-shielding paper as a guide.

[0004]

Since a 120-type or 220-type roll-shaped photographic film is slightly shielded from light by a spool and a light-shielding paper, improper handling may cause light leakage to cause a defect in a photographed image. is there. Since the photographic film is rolled up with a light-shielding paper, taken up, and taken up, erroneous handling may cause trouble in feeding or transporting the photographic film. At present, the length of the photographic film is limited due to the presence of light-shielding paper, and the number of shots is small. Since it is not housed in a patrone or a cartridge, attachment to and detachment from a camera is complicated.

[0005] Roll type photographic films of type 120 or 220 are mainly for professional use, so it is sufficient to master their handling. Sometimes. Trouble must be avoided because it is for professional use.

A wide range of amateurs also have 120 type or 2
In order to provide more opportunities to enjoy photographs with a 20-inch roll-shaped photographic film, it is necessary to simplify handling and to simplify photographing, such as a film with a lens, which has recently become remarkably popular. I have.

Accordingly, it is an object of the present invention to improve the simplicity of handling, to reduce light leakage, and to increase the number of shots of a 120 type or 2 type.
An object of the present invention is to provide a 20-type roll-shaped photographic film, a camera, a magazine or a film holder and a photographing unit using the same.

[0008]

The above object of the present invention has been attained by the following constitutions.

(1) A roll-shaped photographic film having a width of 61.3 to 72.5 mm and having perforations at intervals of 10 ± 1 mm.

(2) A roll-shaped photographic film having a width of 61.3 to 72.5 mm and having perforations at intervals of 20 ± 2 mm alternately at both ends in the width direction of the film.

(3) The roll-shaped photographic film according to (1) or (2), having a transparent magnetic recording layer.

(4) The roll-shaped photographic film according to (1), (2) or (3), which is wound around a spool and housed in a light-shielding cartridge.

(5) The width is 61.3 to 72.5 mm, and perforations are provided at intervals of 10 ± 1 mm or 20 ± 2 m alternately provided at both ends in the width direction of the film.
A camera that detects perforations at m intervals and positions captured images.

(6) The size of the photographed image is 6 × 4.5.
For size 6 perforations (50 ± 5m
m), 7 perforations (60 ± 6 mm) for the 6 × 6 size, 8 perforations (70 ± 7 mm) for the 6 × 7 size, and 9 perforations (80 for the 6 × 8 size) (5) The camera according to (5), wherein the photographic film is transported by a length corresponding to 10 perforations (90 ± 9 mm) when the size is 6 × 9.

(7) A camera that can arbitrarily set the interval between a captured image frame and the next captured image frame in the shortest distance unit of perforation.

(8) The camera according to (7), wherein the photographing information can be magnetically recorded in a non-photographing portion between the photographed image frame and the next photographed image frame.

(9) 6 × 4.5 size, 6 × 6 size, 6 × 7 size,
A camera that magnetically records a shooting screen size of 6 × 8 size and 6 × 9 size.

(10) The shooting screen size is 6 × 4.5.
Size, 6x6 size, 6x7 size, 6x8 size,
A camera that can be changed arbitrarily in the range of 6 × 9 size.

(11) Magnetically record the size of the photographing screen in the non-photographing portion between the photographed image frame and the next photographed image frame (7)-
The camera according to any one of (10) and (10).

(12) The width is 61.3 to 72.5 mm, and perforations are provided at intervals of 10 ± 1 mm or 20 ± 2 m alternately provided at both ends in the width direction of the film.
A magazine that detects perforations at m intervals and positions captured images.

(13) The size of the photographed image is 6 × 4.
6 perforations for 5 size, 7 perforations for 6x6 size, 8 perforations for 6x7 size, 9 perforations for 6x8 size, 6x9 size In the case of (1), the magazine according to (12), wherein the photographic film is transported by a length corresponding to 10 perforations.

(14) A magazine that can arbitrarily set the interval between a captured image frame and the next captured image frame in the shortest distance unit of perforation.

(15) The magazine according to (12), wherein the photographing information can be magnetically recorded in a non-photographing portion between the photographed image frame and the next photographed image frame.

(16) Magnetic recording of a photographing screen size of 6 × 4.5 size, 6 × 6 size, 6 × 7 size, 6 × 8 size, 6 × 9 size at the leading end or the rear end of the photographic film. Magazine to do.

(17) The shooting screen size is 6 × 4.5.
Size, 6x6 size, 6x7 size, 6x8 size,
A magazine that can be changed arbitrarily in the range of 6 × 9 size.

(18) Magnetically record the photographic screen size in the non-photographing section between the photographic image frame and the next photographic image frame (12)
-The magazine according to any one of (17) to (17).

(19) A photographing unit in which the photographic film according to the above (1) or (2) is loaded and packaged so as to be photographable in an unexposed state.

(20) The photographing unit performs at least one selected from transporting and positioning the photographic film by a sprocket corresponding to the perforation of the photographic film according to (1) or (2). The imaging unit according to (19), which is characterized in that:

Hereinafter, the present invention will be described in detail.

FIG. 1 shows a roll-shaped photographic film of the present invention in which perforations are provided at one end of a conventional so-called brownie film at 10 mm intervals. Perforations may be provided at both ends. Also, FIG.
This is an example in which perforations at m intervals are provided alternately at both ends of the film.

FIG. 3 shows the relationship between the position of the photographed image frame of the photographic film of the present invention and the perforation, in the case of a 6.times.4.5 size. Similarly, FIG. 4 shows a 6 × 6 size, FIG. 5 shows a 6 × 7 size, and FIG. 6 shows a 6 × 8 size.
FIG. 7 shows an example of the 6 × 9 size.

That is, even if the size of the photographed image is different, the position of the photographed image frame is determined in relation to the position of the perforation. Therefore, the camera only needs to detect the determined number of perforations according to the size of the captured image.

FIG. 8 shows a case where the perforations at both ends are detected and positioned when perforations at intervals of 20 mm are alternately provided at both ends of the film. Therefore, in the case of the single-sided perforated film shown in FIGS. 1, 3, 4, 5, 6, and 7, the perforation detecting portion of the camera may be on one side with respect to the width direction of the film. In the case of a perforated film, the perforation detecting portions of the camera are installed on both sides in the width direction of the film. In addition, only one side may be used by installing on both sides.

FIGS. 9A and 9B show a case where the distance between the photographed image frame and the next photographed image frame is changed to be wider. Since a perforation is detected to position a captured image, the interval between captured image frames can be easily changed by changing the number of perforations to be detected.

FIG. 10 is a sectional view of a photographic film having a transparent magnetic recording layer. Information relating to photographic film, photographing information, customer information, development information, print information, and the like can be recorded on the magnetic recording layer 6 with a magnetic head and used.
FIG. 11 shows a case where magnetic recording is performed on the end of the non-image portion, and FIG. 12 shows a case where magnetic recording is performed on a non-photographing portion between a captured image frame and the next captured image frame. FIG. 13 shows an example in which the photographing screen size is magnetically recorded at the leading end of the photographic film. this is,
When a photographic film is loaded in a camera having a specific photographic screen size, writing is performed on the photographic film from the magnetic head of the camera before or at the start of photographing. Thereafter, since the photographing screen size of the photographic film is recorded, the printer can recognize the screen size at the time of printing, for example, and automatically set the optimum printing conditions.

FIG. 14 shows that the photographing screen size is 6 × 4.5.
Size, 6x6 size, 6x7 size, 6x8 size,
This shows a camera that can be arbitrarily changed within a 6 × 9 size range.
By moving the aperture frame of the variable aperture 143, it is possible to achieve high image quality with a large shooting screen size or increase the number of shots with a small shooting screen size.

FIG. 15 shows an example in which different photographic screen sizes are mixed in one photographic film. In this case, the size of each photographic screen is magnetically recorded at the end of the photographic film or in the non-photographing portion between the photographic image frame and the next photographic image frame.

In the present invention, if the width of the film is applied while maintaining the conventional standard of 61.3 to 62.5 mm, the size of the photographing screen is inevitably reduced by providing perforations on one or both sides. Advanced Photo that emerged as an improvement of the conventional 135 size
By improving the image quality of the silver halide light-sensitive material as achieved by System, it can be achieved without lowering the image quality than the conventional brownie size.

16 (B) and 16 (C) are the same as the conventional brownie size of FIG. 16 (A), and the width is increased by the amount of perforation. Since the photographing screen size is the same as that of the related art, the image quality does not naturally decrease and can be further improved. By improving the image quality of the silver halide photosensitive material, for example, 6
Even in the case of the × 4.5 size, it is possible to obtain the same image quality as that of the conventional 6 × 8, and this also increases the number of shots of one film.

FIGS. 17A and 17B show a roll-shaped photographic film having a width of 61.3 to 72.5 mm stored in a cartridge.

FIG. 18 shows a photographing unit (film with lens) in which the photographic film is mounted so as to be photographable in an unexposed state. Conventional 135 size and Advanced
Since the photographing screen size is larger than the Photo System size, a photograph having much better image quality can be obtained. Since the camera body and lens are mainly made of plastic, it can be provided at a much lower cost than conventional brownie size cameras. Since the photographic film of the present invention has perforation, even in such a photographing unit, the film can be easily and reliably wound.

The method for feeding and positioning a film having a perforation according to the present invention can be applied to magazines 19, 20, 21, and 22 detachable from a camera body, whereby a conventional camera can be used as it is. There are advantages.

[0043]

According to the present invention, it is possible to provide a 120-type or 220-type roll-shaped photographic film having improved simplicity of handling, reduced light leakage and increased number of shots, a camera, a magazine and a photographic unit using the same. did it.

[Brief description of the drawings]

FIG. 1 shows an example of a roll-shaped photographic film of the present invention (10 m
FIG. 7 is a plan view showing perforations at m intervals provided at one end of the film.

FIG. 2 shows another example (2) of the roll-shaped photographic film of the present invention.
FIG. 9 is a plan view showing perforations at 0 mm intervals alternately provided at both ends of a film.

FIG. 3 shows a photographed image frame (6 × 4.
FIG. 9 is a plan view showing an example of the relationship between the position (for 5 sizes) and perforation.

FIG. 4 is a plan view showing an example of a relationship between a position of a photographed image frame (in the case of a 6 × 6 size) of a photographic film of the present invention and perforation.

FIG. 5 is a plan view showing an example of a relationship between a position of a photographed image frame (in the case of a 6 × 7 size) of a photographic film of the present invention and perforation.

FIG. 6 is a plan view showing an example of the relationship between the position of a photographed image frame (in the case of 6 × 8 size) of the photographic film of the present invention and perforation.

FIG. 7 is a plan view showing an example of a relationship between a position of a photographed image frame (in the case of a 6 × 9 size) of the photographic film of the present invention and perforation.

FIG. 8 is a plan view showing an example of a case where the perforations at 20 mm intervals at both ends of the film of the present invention are detected to position a captured image frame.

FIGS. 9A and 9B are plan views showing an example of a case where the distance between a photographed image frame of the film of the present invention and the next photographed image frame is changed to be wider.

FIG. 10 is a sectional view of a photographic film having a transparent magnetic recording layer of the present invention.

FIG. 11 is a plan view showing an example in which magnetic recording is performed at an end of a non-image portion of a photographic film having a transparent magnetic recording layer of the present invention.

FIG. 12 is a plan view showing an example in which magnetic recording is performed in a non-photographing portion between a photographed image frame of a photographic film having a transparent magnetic recording layer of the present invention and a next photographed image frame.

FIG. 13 is a plan view showing an example of a case where a photographing screen size is magnetically recorded on the leading end of a photographic film having a transparent magnetic recording layer of the present invention.

FIG. 14 shows a shooting screen size of the present invention of 6 × 4.5 size, 6 × 6 size, 6 × 7 size, 6 × 8 size, 6 ×.
It is a figure which shows an example of the camera which can be changed arbitrarily in the range of 9 sizes.

FIG. 15 is a plan view showing an example in which different photographic screen sizes are mixed in one photographic film.

FIG. 16 is a plan view showing an example in which the photographing screen size of a photographic film is the same as a conventional brownie size and the width is increased by the amount of perforation.
It is an example.

17A and 17B are diagrams showing an example of a roll-shaped photographic film having a width of 61.3 to 72.5 mm stored in a cartridge.

FIG. 18 is a view showing an example of a photographing unit (film with lens) in which the photographic film of the present invention is mounted so as to be able to photograph in an unexposed state.

FIG. 19 is a perspective view showing an example of a conventional magazine.

FIG. 20 is a perspective view showing an example of the magazine of the present invention.

FIG. 21 is a perspective view showing another example of the magazine of the present invention.

FIG. 22 is a sectional view showing an example of the magazine of the present invention.

[Explanation of symbols]

 Reference Signs List 11 photographic constituent layer 12 undercoat layer 13 transparent support 14 undercoat layer 15 antistatic layer 16 magnetic recording layer 111 photographed image forming unit 112 magnetic recording unit 121 photographed image forming unit 122 magnetic recording unit 131 photographed image forming unit 132 magnetic recording unit 141 Perforation detection unit 142 Perforation detection unit 143 Variable aperture 172 Cartridge 173 Cartridge main body 173a Upper case 173b Lower case 175 Spool 175a Key groove 176 Film path 177 Light shielding cover 177a Key groove 181 Lens 182 Strobe 183 Strobe switch 184 Fine switch 184 187 Film counter 191 Winding knob 201 Liquid crystal display unit 202 Film transport control button 20 Cartridge cover 204 film cartridge 221 perforation detecting unit 222 photographic film 223 winding shielding cover 224 take-up shaft 225 guide 226 motor drive control unit and the magnetic input-output control unit 227 cartridge 228 magnetic head

Claims (20)

[Claims] (1) a width of 61.3 to 72.5 mm;
Roll-shaped photographic film having perforations at ± 1 mm intervals. 2. The width is 61.3 to 72.5 mm, and 20
A roll-shaped photographic film having perforations at ± 2 mm intervals alternately at both ends in the width direction of the film. 3. The method according to claim 1, further comprising a transparent magnetic recording layer.
A roll-shaped photographic film as described in the above. 4. The roll-shaped photographic film according to claim 1, which is wound around a spool and housed in a light-shielding cartridge. 5. A width of 61.3 to 72.5 mm,
A camera which detects a perforation at ± 1 mm intervals or a perforation at 20 ± 2 mm intervals alternately provided at both ends in the width direction of the film to position a photographed image. 6. When the size of a photographed image is 6 × 4.5, 6 perforations (50 ± 5 mm), 6
For × 6 size, 7 perforations (60 ± 6
mm), 6 × 7 size for 8 perforations (70 ± 7 mm), 6 × 8 size for 9 perforations (80 ± 8 mm), and 6 × 9 size for 10 perforations (90 6. The camera according to claim 5, wherein the photographic film is transported by a length corresponding to (± 9 mm). 7. An interval between a photographed image frame and a next photographed image frame,
Camera that can be set arbitrarily in the shortest distance unit of perforation. 8. The camera according to claim 7, wherein photographing information can be magnetically recorded in a non-photographing portion between the photographed image frame and the next photographed image frame. 9. At the front or rear end of the photographic film, 6
× 4.5 size, 6 × 6 size, 6 × 7 size, 6 × 8
A camera that magnetically records a shooting screen size of 6 × 9 size. 10. The shooting screen size is 6 × 4.5 size, 6 × 6 size, 6 × 7 size, 6 × 8 size, 6 ×
A camera that can be changed arbitrarily in a range of 9 sizes. 11. The size of a photographing screen is magnetically recorded in a non-photographing section between a photographed image frame and a next photographed image frame.
The camera according to any one of the preceding claims. 12. The width is 61.3 to 72.5 mm.
A magazine for detecting a perforation at an interval of 0 ± 1 mm or a perforation at an interval of 20 ± 2 mm provided alternately at both ends in the width direction of the film and positioning a photographed image. 13. The size of a photographed image is 6 perforations when the size is 6 × 4.5, 7 perforations when the size is 6 × 6, and 8 perforations when the size is 6 × 7. 13. The magazine according to claim 12, wherein the photographic film is transported by a length corresponding to nine perforations when the size is 8x and 10 perforations when the size is 6x9. 14. A magazine capable of arbitrarily setting the interval between a captured image frame and the next captured image frame in the shortest distance unit of perforation. 15. The magazine according to claim 12, wherein photographing information can be magnetically recorded in a non-photographing portion between the photographed image frame and the next photographed image frame. 16. At the front end or rear end of the photographic film,
6 × 4.5 size, 6 × 6 size, 6 × 7 size, 6 ×
A magazine that magnetically records shooting screen sizes of 8 sizes and 6 x 9 sizes. 17. The shooting screen size is 6 × 4.5 size, 6 × 6 size, 6 × 7 size, 6 × 8 size, 6 ×
A magazine that can be changed arbitrarily in a range of 9 sizes. 18. A photographing screen size is magnetically recorded in a non-photographing portion between a photographed image frame and a next photographed image frame.
8. The magazine according to any one of items 7 to 7. 19. A photographing unit in which the photographic film according to claim 1 is loaded and packaged so as to be photographable in an unexposed state. 20. The photographing unit according to claim 1, wherein
20. The photographing unit according to claim 19, wherein at least one selected from transporting and positioning the photographic film by a sprocket corresponding to the perforation of the photographic film is performed.