JPH0843923A - Film type camera and photographic film - Google Patents

Abstract

PURPOSE:To extend an effective photographic area and make recording of data possible in an area between an area capable of being photographed and the edge parts of a film by detecting the data and controlling a driving means advancing a film based on the detected signal. CONSTITUTION:Small holes 4 are formed in a film 1 for detecting the sent quantity of the film 1. Based on the counting output of a counter 33, the sent quantity of the film 1 is detected and the revoluation degree of a driving motor 36 of a winding shaft is so controlled through a drive amplifier 35 as to convert the sent quantity into a proper counting number reflecting the size of a frame 3. At the time of photographing, in the case the free end of a lever is lowered, data 4 is recorded at the position in the inside and along the long side in the upper part of the frame 3. Also, in the case the free end of the lever is raised, the data 4 is recorded at the position in the outside and along the long side in the upper part of the frame 3. In those cases, the data 4 can be recorded either in the inside or in the outside of the frame 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film type camera and a photographic film for expanding the effective photographing area of the film.

[0002]

2. Description of the Related Art The current 35 mm film (system 135) for general photography has JIS and IS sizes.
It is defined by O, etc.

FIG. 12 shows a part of the specified size (the tolerance is omitted). The width of the film 1 is 35 mm, the distance between the perforations 2 for feeding the film is 25 mm, and the width of the perforations 2 is 25 mm. The pitch is 4.75 mm. Then, for such a film 1, the frame 3 is 24 m in the width direction of the film 1.
m, a length of 36 mm in the length direction is formed in a rectangle, and the pitch of the pieces 3 is 38 mm, which is eight times the pitch of the perforations 2.

The photographic film which is generally widely used at present is the above-mentioned 35 mm film. As a method for improving the image quality, particularly the resolution, of the film 1, the photosensitizer applied to the i film is improved. ii Increase the width of the film to increase the frame. Can be considered.

[0005]

However, in general, the fineness of the particles of the photosensitizer, that is, the resolution, is inversely proportional to the film sensitivity. Therefore, unless a new photosensitizer is discovered, the image quality is improved by the item i. It is difficult. In that respect, according to the method of the item ii, the image quality can be improved with the current photosensitizer, but since the width of the film 1 becomes large, the camera becomes large and heavy, and various products are produced. Does not match the current trend of smaller size and lighter weight.

[0006] The perforations 2 are through holes provided on both sides of the film 1.
The film 1 is fed by driving the sprocket of the camera, and the feed amount of the film 1 is determined by the rotation amount of the sprocket. Therefore, the perforation 2 is indispensable for the film 1 and the camera.

However, with the perforation 2 as described above, when the data such as the photographing date and time is imprinted on the film 1, the data is imprinted at the positions shown in FIGS.

That is, FIG. 1A shows a case where the data 4 is printed inside the frame 3, which is widely practiced by a general compact camera or the like, and can imprint the shooting date on printed photographic paper. However, it is not suitable for enthusiasts or professional photographers.

FIG. 1B shows a case where data 4 is projected between frames 3 and 3. In this case, the film 1 is cut at the position of data 4 when sliding. It is inconvenient to attach a slide frame. Further, even in the case of a negative film, it is necessary to keep the film 1 long during DPE and storage. Furthermore, at the time of printing, the data 4 cannot be imprinted on the printing paper, and even if it is possible, when the frame 3 is photographed so as to be horizontally long, each character indicating the data 4 lies sideways. It becomes unnatural.

Further, FIG. 1C shows a case where the data 4 is printed so as to straddle the frame 3 and its outer frame on the perforation 2 side, but the data 4 is printed when printing on photographic paper. It is inconvenient when there is no or slide.

In view of the above point, the present invention aims to enlarge the effective photographing area of the film and improve the above.

[0012]

SUMMARY OF THE INVENTION The present invention eliminates the cartridge storage portion, the film storage portion, the sprocket driving through-hole, and enables shooting in the non-shooting area between the film shooting area and the film edge. A film on which data indicating the size of the exposed frame of the area is recorded, a driving means for feeding the film between the cartridge storage part and the film storage part, a detection means for detecting this data, and this detection means. It is a film type camera comprising a control means for controlling the drive means by a detection signal from the.

Further, according to the present invention, the through hole for driving the sprocket is eliminated, and data indicating the size of the frame which can be exposed in the photographable area is provided between the photographable area and the film edge portion of the film as magnetic information or optical information. It is a photographic film that is recorded with information and is capable of recording optical information at the time of shooting.

According to the present invention, the effective photographic area is enlarged by eliminating the sprocket driving through holes in the film 1. Since the data 4 is recorded between the filmable area of the film and the film edge, the effective shooting area can be further expanded.

That is, in this case, the camera is not increased in size and weight. Further, the equipment such as the current film manufacturing apparatus and the film processing apparatus for the photographed film can be utilized as it is, and the present equipment for 35 mm film can be used together. For example, a device that cuts a wide film coated with a photosensitizer into a width of 35 mm, a standardized patrone manufacturing device, or a device that winds a cut film into the patrone is automated and becomes a large-scale facility. However, these facilities can be used as they are.

Further, the processes after photographing, that is, the processes of phenomena, printing, and stretching are automated, and all the processing devices are designed on the basis that the width of the film is 35 mm. It is not practical to change. Therefore, it is practical to improve the image quality by setting the width of the film to 35 mm, which is equal to the current 35 mm film.

By the way, the current 35 mm film has a width of 35 mm, but the length of the frame in the width direction is 24 mm, which narrows the effective photographing area.
This is because the perforations 2 for the camera sprocket to feed the film are provided on both sides of the film.

On the other hand, in the camera, the computerization has progressed, and the drive control by the motor can be performed with considerable accuracy.
It has been confirmed by experiments that the film can be driven with sufficient accuracy without using a large sprocket and perforations 2 as in the past.

Therefore, the perforations 2 are removed from the 35 mm wide film 1, and the length of the frame in the film width direction is increased to the position where the perforations 2 are located. That is, by doing so, the effective effective photographing area can be enlarged by about 40%, and therefore the image quality can be improved accordingly.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the film type camera and photographic film of the present invention will be described below with reference to the drawings.

In this example, as shown in FIG. 7A, the width of the film 1 is 35 mm, which is equal to the current film width, and no perforation is provided. The length in the film width direction and the length in the film length direction of the frame 3, which is the effective photographing area, are 30 mm and 40 mm.
And Further, the pitch of the pieces 3, that is, the film 1
The feed pitch is 42.0 mm.

However, the size and pitch of this piece 3 are
This is to cope with the current television broadcasting system, so that the aspect ratio of the piece 3 is 3: 4.

When dealing with HDTV (so-called high-definition), the size of the piece 3 is 30 mm × 53.3 mm and the pitch is 57.7, as shown in FIG.
5 mm. The aspect ratio is 9:16.

Further, the above-mentioned numerical values are for the full size, and for the half size, as shown in FIGS. 7C and 7D, the size of the frame 3 is 30 mm × 22. 5mm, pitch 26.2mm, HD
For TV, the size of the piece 3 is 30 mm × 16.9 mm,
The pitch is 21.0 mm.

Although not shown, the film 1 having the above-mentioned format is housed in a cartridge (cartridge) similar to the existing 35 mm film.

Therefore, as shown in FIGS. A and B, if the length of the piece 3 in the film width direction is 30 mm,
This is 1.25 times the length of the current 35 mm film in the film width direction, which is 24 mm, so the image quality (resolution) is improved by 25%.

If the length of the frame 3 in the film length direction is also enlarged at the same ratio, 1.25 ×
1.25≈1.56, which is a 56% improvement in image quality. Further, comparing the area per frame, the current area is 24 mm × 36 mm = 864 mm ² Fig. 7A: 30 mm × 40 mm = 1200 mm ² , so the area of one frame increases by about 39%, that is, about 39%. The image quality is improved. Further, if the image quality is the same, the image can be enlarged further.

Also, as shown in FIGS. 3C and 3D, the long side of the frame 3 is close to the width of 36 mm in the current film length direction of the current full size even in the half size. Obtainable.

Further, since the length of the frame 3 in the film width direction is 30 mm, 2.5 mm non-photographing areas can be obtained between the frame 3 and both edges of the film 1, respectively. It is possible to secure the flatness of the film 1 at the time of shooting, control the film 1, or read or write data. Further, since it is not necessary to provide the camera with a sprocket for feeding the film, the camera can be made smaller and lighter.

Further, when feeding the film 1, the film 1
Since there is no perforation, the feed amount of the film 1 is detected by, for example, a detection roller that comes into contact with the film 1. If the pitch of the frame 3 is the above-mentioned value, these values are 42.0 mm. = 5.25 mm × 8 57.75 mm = 5.25 mm × 11 26.25 mm = 5.25 mm × 5 21.0 mm = 5.25 mm × 4, all being integral multiples of 5.25 mm, and 5.25 mm = Π × 3.34 mm / 2.

Therefore, the feed amount of the film 1 can be determined by setting the diameter of the detection roller to 3.34 mm and detecting an integer number of rotations. The detection means can be simplified.

FIG. 8 shows another example of the pitch of the pieces 3, and also in the case of this pitch, 44.0 mm = 6.28 mm × 7 56.5 mm = 6.28 mm × 9 25.1 mm = 6.28 mm × 4 18.8 mm = 6.28 mm × 3 6.28 mm = π × 4.00 mm / 2, and the number of rotations of the detection roller becomes an integral number of times.
The resolution is also 1/2 rotation.

FIG. 9 shows a case where a small hole 4 is provided in the film 1 for detecting the feed amount of the film 1, and a magnetic mark or the like may be used instead of the small hole 4 as described later. That is, in the case of the format shown in FIG. 7, as shown in FIG.
Small holes 4 having a diameter of, for example, 1 mm at a pitch of 5.25 mm on a line of 5 mm, that is, on a line between the edge and the piece 3.
To provide. Similarly, in the case of the format shown in FIG. 8, the small holes 4 are provided at a pitch of 6.28 mm as shown in FIG. 9B.

Since the pitches of 5.25 mm and 6.28 mm of these small holes 4 are determined based on the above-described grounds, they can be used for the current television broadcasting and HDTV, and can be used in both full size and half size. Can respond. That is, at the time of feeding the film, the number of the small holes 4 is counted by a photo interrupter using infrared light or the like,
When the number of films reaches the above-mentioned number, if the film feeding is stopped, the frames 3 are formed on the film 1 at the correct pitch.

FIG. 3 is a partial sectional view of an example of a camera according to the present invention, and a section parallel to a bottom surface of a dark box portion of the camera is taken as a section. Further, FIG. 4 is a rear view with the back cover removed.

The center of the body 11 is a dark box 12, and a lens 13 is provided in an opening in front of the box.
Further, one inside portion of the body 11, that is, the left side in the drawing is a cartridge storage portion 14, and a film supply shaft 15 is provided above the cartridge storage portion 14.
Is provided, and the patrone 5 accommodating the above-described film 1 is set so as to be fitted to the supply shaft 15 at the time of photographing.

Further, a film winding shaft 16 is provided on the other inner side of the body 11, that is, on the right side in the figure. Although not shown in the drawing, the winding shaft 16 winds the film 1 by being driven by a motor. The winding shaft 16 has a peripheral surface, for example, a high friction material such as neoprene as shown in FIG. 17 is coated and around the winding shaft 16, for example, three film guides 18A to 18C are provided.

The guides 18A to 18C are linear in a direction parallel to the central axis of the winding shaft 16 and arcuate in a direction orthogonal to the central axis. And guides 18A-18C
One end on the arc side is pivotally supported on the body 11, and the other end is brought into contact with the winding shaft 16 by a torsion spring (not shown). Further, film holding rollers 10A to 10C are provided at the ends of the guides 18A to 18C on the winding shaft 16 side, respectively.
It is axially supported so as to be parallel to the central axis of 6.

Then, for example, the roller 10 of the guide 18A
The diameter of A is set to the above-mentioned size, and a part of the roller 10A is a permanent magnet 31 magnetized with NS in the radial direction, and the magnetic sensor 32 is provided on the guide 18A so as to face the magnet 31. Has been.

The opening behind the dark box 12 is a rectangular opening (aperture) 19 of, for example, 30 mm (film width direction) × 40 mm (film length direction) corresponding to the frame 3 of the film 1 described above. ing. However, the opening 19
Since the light reaching the film 1 from the lens 13 is not in close contact with the film 1 at the time of shooting, the size of the frame 3 of the film 1 is 30
If the size is mm × 40 mm, the size of the opening 19 is 30 mm
It is slightly smaller than × 40 mm.

Further, behind the dark box 12, the opening 1
A pair of film guide rails 21 are provided in parallel on both sides of the film width direction 9 along the opening 19 and over at least the range of the opening 19.

1 and 2 show an example of an apparatus for imprinting data, FIG. 1 is a front view of a back cover showing the whole state, and FIG. 2 is a front view showing a state in which a film pressure plate is removed. is there.

That is, the front of the back cover 41 has the opening 19
A rectangular film pressure plate 42 larger than the opening 19 is provided at a position opposed to the opening 19, and the pressure plate 42 extends over, for example, the upper long side of the frame 3 of the film 1 (long side in full size). Through hole 43 at the opposite position
Is formed.

The through-hole 43 is faced with, for example, a 6-digit day-shaped issuing element 44 such that the arrangement direction of the 6 digits is the film length direction. In this case, the element 44 is pivotally supported near the center of the switching lever 45, and one end of the lever 45 is pivotally supported by the back cover 41 by the pin 46.

Therefore, as shown in FIGS. 2A and 2B,
When the free end of the lever 45 is moved up and down around the pin 46 in the film width direction, the element 44 moves in the film width direction. At this time, the element 44 is guided by the guide rail 47 to move in the film width direction. It is made to move in parallel. At this time, although not shown, the toggle spring stabilizes the element 44 in the position shown in FIGS. 2A and 2B.

The element 44 is then connected to the syscon (not shown) through the cable 48 and the contact 49. Reference numeral 51 is a patrone pressing spring.
Further, the viewfinder, diaphragm, shutter and the like are configured in the same manner as the existing camera. Further, for example, a film feed amount detection circuit as shown in FIG. 6 is provided.

According to such a configuration, at the time of photographing, the patrone 5 is set in the storage section 14, and the film 1 reaches the winding shaft 16 from the patrone 5 via the opening 19. At this time, since the film 1 is pressed against the winding shaft 16 by the film guides 18A to 18C and the pressing rollers 10A to 10C, the film 1 is taken up by the winding shaft 16 when the winding shaft 16 rotates. That is, the film 1 will be fed without perforation.

When feeding the film, the film 1
The rollers 10A to 10C and the magnet 31 rotate in response to the feeding of the magnet 31, the rotation of the magnet 31 is detected by the sensor 32, and the detection output is counted by the counter 33 as shown in FIG. It is supplied to the system controller 34.

The system controller 34 is used to set the operation of the whole camera, for example, the aperture value and the shutter speed. The system controller 34 guides each time the film 1 is fed by 5.25 mm or 6.28 mm. Since the roller 10A of 18A makes one rotation, the feed amount of the film 1 is detected by the count output of the counter 33, and the drive of the winding shaft 16 is driven through the drive amplifier 35 so that this becomes a count value corresponding to the size of the frame 3. The amount of rotation of the motor 36 is controlled. Therefore, the film 1 is fed at the pitch of the frame 3 corresponding to the format.

At the time of photographing, when the free end of the lever 45 is lowered as shown in FIG.
Since 4 is located below the through hole 43, the data 4 is imprinted inside the piece 3 and along the upper long side as shown in FIG.

When the free end of the lever 45 is raised as shown in FIG.
Since it is located on the upper side of
The data 4 is imprinted on the outside of the frame 3 and along the upper long side.

FIG. 11A shows the film 1 by the element 44.
An example of data 4 that can be imprinted on the screen is shown in FIG.
Shows an example of characters that can be used as data 4. Thus, according to this example, the light emitting element 44 is provided so as to face the inside and the outside of the piece 3, and the film 1 is provided.
Since the perforation 2 is eliminated, the data 4 can be imprinted on both the inside and the outside of the frame 3.

Further, by moving the light emitting element 44, the data 4
Since the imprinting position is switched between the inside and the outside of the piece 3, the cost is lower than that when two light emitting elements are provided inside and outside the piece 3, respectively.

In the above description, the film 1 may be either a positive film or a negative film. Further, it is possible to imprint photographing data or the like on an ineffective photographing area between the edge portion of the film 1 and the frame 3, or to record data indicating the standard of the film 1 in advance. Further, the small holes 4 may be formed at a rate of one frame, and the small holes 4 may be replaced with magnetic marks or the like.

[0055]

According to the present invention, the sprocket drive through-hole is eliminated from the film 1, and the effective photographing area can be enlarged. Further, shooting data and the like can be imprinted in an ineffective shooting area between the edge portion of the film 1 and the frame 3, or data indicating the standard of the film 1 can be recorded in advance. Furthermore, since the data 4 is recorded between the filmable area of the film and the edge of the film, the useful shooting area can be expanded.

[Brief description of drawings]

FIG. 1 is a front view of a back cover of an embodiment of a film type camera of the present invention.

FIG. 2 is a front view of the main part of FIG.

FIG. 3 is a partial cross-sectional top view of one embodiment of the film camera of the present invention.

FIG. 4 is a rear view of the embodiment of the film type camera of the present invention with the back cover removed.

FIG. 5 is an exploded perspective view of a main part of an embodiment of the film type camera of the present invention.

FIG. 6 is a block diagram for explaining the present invention.

FIG. 7 is a diagram used for explaining the present invention.

FIG. 8 is a diagram for explaining the present invention.

FIG. 9 is a diagram for explaining the present invention.

FIG. 10 is a diagram for explaining the present invention.

FIG. 11 is a diagram used for explaining the present invention.

FIG. 12 is a diagram for explaining the present invention.

FIG. 13 is a diagram for explaining the present invention.

[Explanation of symbols]

 1 Film 3 Frame 4 Data (Small Hole) 5 Patrone 12 Dark Box 14 Patrone Storage Section 16 Film Winding Axis 32 Sensor 44 Light Emitting Element

Claims (8)

[Claims] 1. A size of a frame that can be exposed in a non-photographing area between a photographable area of a film and a film edge by eliminating a cartridge storage section, a film storage section, and a sprocket driving through hole. Which records the data indicating the above, a driving unit for feeding the film between the cartridge storage unit and the film storage unit, a detection unit for detecting the data, and a drive signal based on a detection signal from the detection unit. A film type camera comprising: a control means for controlling the means. 2. The film type camera according to claim 1, wherein the detecting means detects data indicating the size of the frame recorded by magnetic information or optical information. 3. The film type camera according to claim 2, wherein the magnetic information is a magnetic mark. 4. The film type camera according to claim 2, wherein the optical information comprises a small hole. 5. The film type camera according to claim 1, wherein the detection means detects data indicating a size of a frame that can be exposed, and the driving means feeds a film for each size of the frame. camera. 6. A sprocket driving through hole is eliminated, and data indicating the size of the exposed frame of the photographable area is recorded by magnetic information or optical information between the photographable area of the film and the edge of the film. In addition, a photographic film characterized by being able to record optical information at the time of shooting. 7. The photographic film according to claim 6, wherein the magnetic information is recorded by magnetic marks. 8. The photographic film according to claim 6, wherein the optical information comprises a small hole or imprint information.