JPH0496056A - Cartridge for photographic film and camera using it - Google Patents

Abstract

PURPOSE:To introduce a system for a half-sized photograph without deteriorating the processing efficiency of a photographic print by aligning the long side of an aperture whose aspect ratio is a specified value with the feeding direction of a film and making the length thereof correspond to the interval of a hole for detecting feeding. CONSTITUTION:The cartridge for a photographic film 9 where the film 12 whose width is 35mm is incorporated is constituted on the assumption that it is used for a camera 30 provided with the aperture 31 whose long side coincides with the feeding direction of the film and whose aspect ratio of a photographing image plane is 1.4 + or - 0.2. Then, the long side is set to be the length of 18 - 30mm. Therefore, even when the photographing picture has the size different from full-size, work is executed similarly with the conventional 35mm film which is photographed by the full-size while the feeding direction of a negative film is made to same with the feeding direction of a photographic paper without deteriorating the processing efficiency at the time of processing the photographic print. Besides, the camera 30 is made thin by making the size of the aperture small and making the focal distance of a photographing lens short.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photographic film cartridge for storing 35 mm wide film and a camera in which the cartridge is loaded.

[Conventional technology] Conventionally, 35II! A camera loaded with a photographic film cartridge containing oI width film is 24mm x 36mm.
A full-size camera with a rectangular aperture of m,
It is roughly divided into half-frame cameras with a rectangular aperture of 24mm x 1Bmm.

This full-frame camera is a camera equipped with an aperture whose long side coincides with the film feeding direction, and the half-frame camera is a camera equipped with an aperture whose short side coincides with the film feeding direction. .

With such a camera, film exposed with either a 24III 11 x 36 aperture or a 24m x 18m aperture is submitted by the user to a photo lab. When performing a simultaneous printing service, the film processing laboratory develops the film and then converts the obtained negative into a service size (service size at the applicant's affiliated laboratory is E size of 117m x 82.5m, or Printing is done on photographic paper (L size (127 x 89)). In this manner, current developing systems utilize photographic printers that can print either film taken with a half-size camera or film taken with a full-size camera.

[Problem to be solved by the invention]

However, even if you use the above-mentioned photo printer, the work procedure must be different when printing from a full-size negative and when printing from a half-size negative, as mentioned above. Although the screen sizes are different for full-size negatives and half-size negatives, the photographic paper size is constant, so first it is necessary to change the magnification of the printing lens.

Furthermore, with full-size negatives, it is possible to align the long side of the screen with the feeding direction of the photographic paper, and to print each frame sequentially with the negative feeding direction and the photographic paper feeding direction matching. On the other hand, with half-size negatives, the long side of the screen is perpendicular to the feeding direction of the negative, so the feeding direction of the negative and the feeding direction of the photographic paper must be perpendicular to each other.

Therefore, when printing from a large amount of negatives, including a mixture of full-size and half-size negatives, the above operations must be performed for each type of negative, which poses problems in terms of workability. .

In addition, to configure a half-frame camera, the long side of the aperture must be perpendicular to the film feeding direction, so in order to make the normal shooting screen horizontally long, the camera body must be vertically long. However, there are major design constraints.

For the reasons mentioned above, despite the remarkable improvement in the image quality of color negative films, the reality is that half-size photographic systems are not widely used.

[Purpose of the invention]

The present invention was made in view of the above background.
To provide a photographic film cartridge that allows the introduction of a half-size photographic system without reducing the processing efficiency of photographic prints, and furthermore, by using this photographic film cartridge, there are no design restrictions. The purpose is to provide a compact camera.

[Means to solve the problem]

In order to achieve the above object, the present invention is provided with an aperture having an aspect ratio of 1.4±0.2, and aligns the long side of the aperture with the film feeding direction, and adjusts the length of the long side. A film with a width of 35 mm is housed in a photographic film cartridge used for a camera with a size of 18 to 30 mm, and is equipped with holes for detecting film advance at intervals corresponding to the length of the long side. .

In another invention, a camera loaded with a film having a width of 35 mm is provided with an aperture having an aspect ratio of 1.4±0.2, and the long side of the aperture is aligned with the film feeding direction. The length of this long side is 18 to 30 mm.

[Effect]

As described in claim (2), the photographic film cartridge of the present invention containing a 35 mm wide film has a long side that coincides with the film feeding direction, and an aspect ratio of the photographing screen of 1.
It is designed to be used with a camera equipped with an aperture of 4±0.2, and it is possible to shoot with the long side of the shooting screen set to a length of 18 to 30 s+m aligned with the film feeding direction. It will be done. Therefore, even if the shooting screen size is different from full size, when printing it, the feeding direction of the negative film is made to match the feeding direction of the photographic paper, just like the conventional 35-inch film shot at full size. It is possible to continue working without changing the camera, and there is no reduction in print processing efficiency.Furthermore, the camera according to claim (2) has an aperture smaller than that of a conventional full-size camera. According to this aperture size, the focal length of the photographic lens can be shortened to make the camera thinner.

Hereinafter, the present invention will be explained in detail according to the drawings.

〔Example〕

FIG. 1 shows the first photographic film cartridge according to the present invention.
It is a partial sectional view showing an example.

This photographic film cartridge 9 is composed of a cartridge 10, a spool 11, and a film 12 having a width of 35 mm. The cartridge 10 rotatably accommodates a spool 11, and its external dimension is 18.8 mm. The end of the film 12 is secured to the spool 11, and the diameter of the spool 11 is 911II11.

The film 12 is made by applying an emulsion to a support having a thickness of 100 μm, and has a thickness of 122 μm. When the film 12 is completely pulled out from the cartridge 10, the length E from the port portion 13 to the tip of the film 12 is 892.5 mm. In addition, to prevent loading errors on the camera side, there is a seal at the leading edge of the film 12.
A short notch 14 is provided, the length D of which is 41.5 m, which is the same as the length of the notch specified by the International Standard (ISo: 1007-1978 edition). In addition, as shown in the figure, the first screen 15a is connected from the rear end of the notch 14.
The length A to the center of the screen, the length B1 between the first screen 15a and the final photographic screen 15z, and the margin C after the final screen 15z are 171 m, 598 m, and 76 m1, respectively.

This film 12 is provided with holes 17a-17z for each photographing screen 15a-i52 from the first screen 15a to the final photographing screen 15z. This hole 17a~1
7z has the same distance from the film edge as conventional perforations. These holes 17a-17
By detecting z on the camera side, it is possible to perform fixed length feed one frame at a time.

Each photographic screen 15a-152 of the film 12 is exposed by the aperture on the camera side with a screen size of 18 mm x 24 m (hereinafter referred to as "half size"), and the long side of the screen size is aligned with the film feeding direction. exposed at the screen size. In order to expose each photographing screen 15a to 15z of the film 12 at the screen size described above, the distance between each of the holes 17a to 17z is set as the sum of the length of the long side of the screen size and the gap length between the screens. There is.

Further, a frame-shaped pre-exposure 18 is performed on the film 12 using a white light source so as to surround each of the photographing screens 15a to 15z, and when the film is developed, the photographing screen 15 is surrounded by a black frame. become.

According to the above configuration, since the holes 17a to 17z are provided in each of the shooting screens 15a to 15Z of the film 12, when shooting with a dedicated camera, the long side of the screen size matches the film feeding direction. It becomes a screen. In addition, since the printing process in the current developing system is the same as setting work for negative film taken with a full-size camera, even if it is mixed with negative film taken with a full-size camera, it is difficult to feed the photographic paper. Printing can be performed while keeping the direction consistent with the feeding direction of the negative film, and work efficiency can be improved. In addition, since a black frame appears around the photographic screen due to pre-exposure, there is no need for high alignment accuracy between the negative mask for half-size printing and the photographic screen, and it is also easier to prevent flare. This is advantageous for efficient print processing.

Also, when considering manufacturing a camera that uses the Photographic Film Patrone 9, the film feeding direction and the long side of the shooting screen can be aligned in the same direction, so it is possible to A horizontally long shooting screen can be obtained, and the exterior design of the camera does not have to be vertically long, so there are no design restrictions.

FIG. 2 shows the second photographic film cartridge according to the present invention.
It is a perspective view showing an example.

This photographic film cartridge 19 incorporates an IC memory 20 having terminals 24 to 29 for external connection. In addition, this photographic film cartridge 19 also includes the first
The film 12 shown in the figure is stored. The dimensions of the cartridge 21 are based on international standards (ISO: 100).
7-1978 edition). When this photographic film cartridge 19 is loaded into the camera, these external connection terminals 24 to 29 are connected to the external terminals on the camera side, and the respective terminals 24 to 29 are connected to the external terminals on the camera side.
Various data regarding the film 12 can be read from the . Further, data received from the camera side can also be stored in the IC memory 20.

FIG. 3 is a perspective view showing a first embodiment of the camera according to the present invention. This camera 30 is a camera in which the aforementioned photographic film cartridge 9 is loaded into a loading chamber 32 from the axial direction of the spool 11. A half-size aperture 31 with a size of 24 mm x 18III11 is provided at the exposure position of this camera 30. On the surface 33a where the aperture 31 is formed, there are rails 33b, 33 that slide on the film 12 during film feeding.
c, and a reflective photosensor 34 is provided on the outside of the upper rail 33b. The photosensor 34 is a hole 17 formed in the film 12.
a to 17z are detected, and each photographing screen 15a to 15z is set in the aperture 31. As a result, the camera 30 sequentially photographs each of the photographic screens 15a to 15z one frame at a time.

The screen size of such a half-size camera 30 is smaller than that of a full-size screen, and the focal length of the photographic lens can be designed to be short accordingly. Since the cartridge 9 is used, it is easy to make the camera thinner and more compact than conventional cameras.

FIG. 4 shows a second embodiment of the camera according to the present invention. In addition to the conventional photographic film cartridge containing 35 am width film, the photographic film cartridge 1 described above is
This is a camera 35 that can also be used with a camera 9.

The loading chamber 40 has a terminal 24 for external connection shown in FIG.
External terminals 41a to 41f are provided to be connected to terminals 41a to 29, and twelve detection pins 42 are arranged to detect the current DX code provided on the surface of the cartridge, as is well known.

This camera 35 has a built-in aperture switching mechanism shown in FIG.
It is configured such that either one of the half-size apertures 46 having a size of m can be selected and used.

A full-size aperture 45 is formed in the dark box 44 on a surface 47 corresponding to the exposure position.

Inside this dark box 44, a shaft 48 is provided parallel to the film feeding direction (arrow A shown in the figure).
A mask plate 52 having a horizontally elongated half-size aperture 46 is fixed thereto.

A gear 49 is fixed to one end of the shaft 48.
is in mesh with the gear 51 of the aperture switching motor 50.

The aperture switching motor 50 is composed of a stepping motor, and is connected to a driver I by a CPU 53, which will be described later.
It rotates in forward and reverse directions according to the drive signal sent through C54. When the motor 50 rotates normally, the mask plate 52
is positioned in front of the full-size aperture 45. At this time, the contact plate 56 provided at the other end of the shaft 48 turns on the switch 57. The ON signal obtained from this switch 57 is taken into the CPU 53. Thereby, the CPU 53 detects that the half-size aperture 46 has been positioned on the photographing optical axis 55, and stops the normal rotation of the motor 50. Further, when the motor 50 is reversed, the mask plate 52 is retracted above the dark box 44.

A rail 61 that slides on the film 12 during film feeding is provided on the surface 47 where the full-size aperture 45 is formed.
．． 62, and a reflective photosensor 63 is provided on the outside of the upper rail 61.

The photosensor 63 detects the holes 17a to 17z formed in the film 12 when the above-mentioned photographic film cartridge 19 is used, and detects the passage of the perforations of the film when a conventional photographic film cartridge is used. Detect. These detection signals are then sent to a counter circuit 74, which will be described later.

FIG. 6 is a block diagram schematically showing the electrical configuration of the camera. The DX code input device 70 uses the detection bin 42 to detect a well-known Dχ code consisting of a combination of a conductive part and an insulating part formed on the outer surface of the cartridge, and determines the film sensitivity.

Information such as the number of images that can be drawn and latitude is sent to the CPU 53. The film information input/output device 71 includes an IC memory 2
When the aforementioned photographic film cartridge 19 in which 0 is incorporated is loaded, the I
Various data such as data representing a half-size film cartridge and data representing the number of shots that can be taken are read from the C memory 20 and output to the CPU 53.

This film information input/output bag W71 contains shooting data obtained on the camera side for each shooting, such as distance measurement data obtained from the autofocus device 77, exposure control device 781 and clock device 80, shutter speed, aperture, etc. Various data such as exposure control data and shooting date and time are stored in the IC memory 2o.
You can also write to . Of course, it is also possible to use the Dχ code system together with the photographic film cartridge 19 equipped with the IC memory 2o. In addition, Patrone 2
In a system that prints while the film 1 and film 12 are connected, it is possible to read from the IC memory 2o that it is a half-size film and automatically change the print magnification, or to control the exposure for each shot. By writing data in the IC memory 2° and having the printer read the data, it is also possible to use it for exposure adjustment during printing.

The ROM 73 includes a DXD-)' input device 70. A sequence program for controlling the operation of the camera in response to data read from the film information input/output device 71 is stored. Then, the aperture size is selected depending on whether the loaded photographic film cartridge is full size or half size, and the amount of film feed per frame is switched. That is, when the photographic film cartridge 19 incorporating the IC memory 20 is used, the half-size aperture=46 is selected, the photo sensor 63 detects passage through the hole 17, and the counter circuit 74 counts up by "1". The film winding is completed each time. On the other hand, IC memory 2o
When a normal full-size photographic film cartridge without a perforation is loaded, the full-size aperture 45 is selected, and when advancing one frame of film, the photosensor 63 and counter circuit 74 determine the number of film perforations that pass through [ Film winding is completed when the number reaches 8''.

The operation of the above camera will be explained.

When the half-size photographic film cartridge 19 incorporating the IC memory 20 is loaded into the camera, data from the IC memory 2o is read into the CPU 53 via the film information input/output device 71. And CPU53
The aperture switching motor 5o is rotated forward at a constant angle via the driver IC 54. As a result, the mask plate 52 is inserted into the photographing optical path, and the barf scissor aperture 46 is positioned at the exposure position. In addition, IC
The memory 20 also stores film sensitivity data and latitude data, and these data are used during exposure control.

In addition, the film 1 frame advance control after shooting is
2, holes 17a to 17z are provided, one per frame.
It is done based on. That is, after the film feeding motor 75 starts rotating in response to the photographing completion signal, the photo sensor 63 detects one of the holes 17a to 17z, and when the counter circuit 74 counts up by "1", the film is loaded. Feeding motor 75 is stopped.

As mentioned above, the half-size aperture 46 is
Since the long side thereof coincides with the film feeding direction, when shooting is repeated, a format is formed in which horizontally long shooting screens 15a to 15z are arranged in the film feeding direction as shown in FIG.

Therefore, when performing print processing from film photographed with this camera, printing can be performed while keeping the feeding directions of the negative film and photographic paper the same.

When a conventional photographic film cartridge in which the IC memory 20 is not incorporated is loaded into the camera, no data can be obtained from the film information input/output device 71.

Further, in this case, the camera is switched to a state where full-size photography is performed.

First, the aperture switching motor 50 is reversed, the mask plate 52 is retracted from the photographing optical path, and the photographing screen range is determined by the full-size aperture 45. and,
Film single frame advance control after shooting is done by photo sensor 6.
3, by monitoring the passage of the film perforation, and when the counter circuit 74 counts up by "8", winding is stopped and photographing can be carried out in the conventional manner.

Note that the above camera is designed to automatically switch between full-frame shooting and half-frame shooting depending on the type of photographic film cartridge loaded, but a manually operated switching mechanism is provided on the camera side. It is also possible to switch this according to the person's intention.

In another embodiment of the photographic film cartridge shown in FIG. 7, a magnetic layer 92 is formed in stripes on both sides of the film 12 by coating or printing, and this magnetic layer 92 is used for various data writing sections. It will be done. This magnetic layer 92 has a photographic film cartridge 19 shown in FIG.
Various data such as those written in the IC memory 20 of the IC memory 20 are recorded. Therefore, by reading these data with a magnetic head provided on the camera side, the control mechanism on the camera side can be switched from a full-size photographing state to a half-size photographing state.

Such a magnetic layer 92 can be used not only to read that it is a half-size film during printing processing and automatically change the print magnification, but also to write data obtained from the camera side. Furthermore, it can also be used as a writing section for correction data when printing is performed.

If correction data obtained when printing is performed is written, it can be used when performing additional prints, which is advantageous in performing print processing with excellent reproducibility. Note that if a material transparent to visible light is used as the magnetic layer 92, the film 12 can be formed by coating or co-casting.
It is also possible to form a magnetic layer on the entire surface of the magnetic layer, thereby increasing the data writing area. Furthermore, in order to write data from the camera side onto the film 12, a plurality of LEDs may be installed in the camera side by side, and various data may be optically recorded on the film 12 as combination data of multiple bits.

The present invention has been described above based on the illustrated embodiments, but when implementing the present invention in a photographic film cartridge, it is necessary to apply the present invention to a conventional photographic film cartridge in which the film leader protrudes from the cartridge in advance. The applicant filed Japanese Patent Application No. 1-21862 and No. 172594.
No. 172,595, there is a photographic film cartridge in which the leading edge of the film is fed out of the cartridge body by rotating a spool provided inside the cartridge body, and US Pat. No. 48,322.
Publication No. 75, Publication No. 4834306, Publication No. 4848
It is also applicable to photographic film cartridges having structures described in Japanese Patent No. 693, Japanese Patent No. 4,846,418, and the like.

〔Effect of the invention〕

As explained above, when the photographic film cartridge of the present invention is loaded into a camera of another invention and a photograph is taken, the long side of the photographing screen coincides with the film feeding direction, and the film is displayed with a screen size smaller than the full size. Because it is exposed to light, the workability of developing, printing, etc. for a 35m++ wide film is improved in the current development system. In addition, in producing the photographic film cartridge of the present invention, the current 35
Since it can be produced using production equipment that produces films with a width of mm, it does not require much capital investment.

4゜Also, since the focal length of the photographic lens can be shortened according to the aperture size, the camera can be made thinner.
It is lighter and more compact than conventional cameras.

Furthermore, in the camera of the present invention, since the long side of the aperture is aligned with the film feeding direction, there is an effect that the shape of the camera can be designed freely as in a full-size camera.

[Brief explanation of drawings]

FIG. 1 shows the first photographic film cartridge according to the present invention.
It is a partial sectional view showing an example. FIG. 2 is a perspective view showing a second embodiment of the photographic film cartridge. FIG. 3 is a perspective view showing a first embodiment of a camera according to another invention. FIG. 4 is a perspective view showing a second embodiment of a camera according to another invention. FIG. 5 is a perspective view showing the main parts of a camera according to a second embodiment. FIG. 6 is a block diagram schematically showing the electrical configuration of a camera according to the second embodiment. FIG. 7 is a front view showing another embodiment of the photographic film cartridge. 9, 19. 90 15a~15 Z 17a~17z 30.35 ・ ・ 45 ・ ・ ・ 31.46 ・ ・ Photographic film cartridge Film shooting screen hole Aperture for full size camera Aperture for half size

Claims (2)

[Claims] (1) Used in cameras that have an aperture with a shooting screen aspect ratio of 1.4±0.2, align the long side of this aperture with the film feeding direction, and have a long side length of 18 to 30 mm. A photographic film cartridge comprising: a 35 mm wide film provided with holes for film advance detection at intervals corresponding to the length of the long side. (2) A camera loaded with 35 mm wide film is equipped with an aperture with an aspect ratio of 1.4 ± 0.2, and the long side of this aperture is aligned with the film feeding direction, and the long side is A camera characterized by having a length of 18 to 30 mm.