JPH0458233A - Film cassette - Google Patents

Abstract

PURPOSE:To easily confirm necessary information by discriminating the kind of an incorporated film in accordance with the state of a character string or a mark string which is read. CONSTITUTION:When the closing action of a cover is detected by a controller 15, the driving motor 18 of a film take-up drum 6 is driven to be rotated and the film 5 in a film cassette 1 is idly fed by the specified number of frames. While the film 5 is idly fed, an optical read part 14 on a camera side is driven by the controller 15 and reads the display of the film kind display part 9 of a film take-up part 3. Namely, while the film 5 is idly fed, the display disk 6a of the take-up part 3 is irradiated with light from the light emitting element 12 of the read part 14 and the reflected light from the disk 6a is made incident on a line sensor 13. Then, the character string 10 of the 'OES' of the display part 9 which is displayed on the disk 6a is read by the line sensor 13.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a film cassette used in an endoscopic camera.

[Prior Art] Generally, as a film cassette used in an endoscope camera, for example, Japanese Patent Application Laid-open No. 55-13302
As shown in Japanese Patent No. 3 and Japanese Patent Application Laid-open No. 57-60318, a film supply section has an unexposed film built into the cassette body, and a film winding section winds up the film supplied from the film supply section. There is a known structure in which the film supply section and the film winding section are connected by a bridge. After taking pictures, this film cassette allows you to fold the bridge and throw away the unnecessary film supply section, allowing only the film winding section to be taken out for development, thereby preventing the bulk of the film cassette after taking pictures. It looks like this.

By the way, the surface of this type of film cassette usually has
Information such as the type of film loaded in the cassette, such as the manufacturer's name, product name, number of frames, etc., is displayed for the user to see. On the other hand, there are also known cameras in which a bar code, detection holes, etc. are provided on the film surface or the outer surface of the film cassette so that information such as the ISO sensitivity and number of frames of the film can be detected on the camera side.

[Problems to be Solved by the Invention] In the conventional structure described above, the outer surface of one film cassette contains various information such as the type of film that the user wants to visually recognize, as well as information that the camera side can detect. Since each piece of film information was displayed separately, it was difficult to display this large amount of information on the limited outer surface of a compact film cassette, which had a relatively small surface area. Therefore, when providing these various types of film information on a compact film cassette, there are restrictions on where these various types of information can be displayed.

In addition, displays such as barcodes that transmit information such as the film's ISO sensitivity and number of frames to the endoscopic camera side cannot be seen by the user at all, and are directly visible to the user. It is essentially meaningless. Therefore, these displays complicate the display on the outer surface of the film cassette, making it difficult to visually confirm the necessary information that should be conveyed to the user. There was a problem in that mistakes such as mistakes in setting the film cassette, such as loading the film cassette into the film cassette, were likely to occur.

This invention has been made in view of the above-mentioned circumstances. Various information such as the film type that can be visually recognized by the user and film information that can be detected by the camera are displayed on the outer surface of a compact film cassette with a relatively small surface area. It is an object of the present invention to provide a film cassette that can efficiently display the following information at the same time, simplify the display on the outer surface of the film cassette, and facilitate confirmation of necessary information.

[Means for Solving the Problems] The invention as claimed in claim (1) includes a film supply section that contains an unexposed film, and a film supply section that is provided at a distance from the film supply section and that is supplied from the film supply section. a film winding section that winds up a film through a film exposure section formed between the film supply section; a bridge that connects the film supply section and the film winding section; It is formed by characters or symbol strings provided on the outer surface, and the form of the characters or symbol strings differs depending on the type of film contained, and the type of film is determined by a reading mechanism for the characters or symbol strings on the camera side. A distinguishable film type display section is provided.

Further, in the invention as claimed in claim (2), the film type display section is provided on a moving member that moves in conjunction with the film winding shaft in the film winding section.

[Function] In the invention of claim (1), the film type display section of the film cassette is formed of characters or symbol strings that can be visually confirmed by the user, and the mode of the characters or symbol strings of this film type display section is By visually checking the type of film contained in the film cassette, the user can confirm the type of film contained in the film cassette, and
When the film cassette is mounted on the camera side, the character or symbol string provided on the outer surface of the film winding section is read by the character or symbol string reading mechanism on the camera side, and the mode of the read character or symbol string is read. The type of built-in film is identified according to the type of film.

Furthermore, in the invention of claim (2), by providing the film type display section on a moving member that moves in conjunction with the film winding shaft in the film winding section, a reading mechanism for characters or symbol strings on the camera side is provided. The length of the film type display section on the moving direction side can be made smaller than the length of the film type display section.

Embodiment FIGS. 1 to 5 show a first embodiment of the present invention.

FIG. 1 shows a schematic structure of a film cassette 1 used in an endoscope camera.

The film cassette 1 is provided with a substantially cylindrical film supply section 2 and a substantially cylindrical film winding section 3 arranged at a distance from the film supply section 2. Further, one end of the cylindrical body of the film supply section 2 and one end of the cylindrical body of the film winding section 3 are connected via a thin plate-shaped bridge 4.

Further, as shown in FIG. 2, a film supply chamber 2a containing an unexposed film 5 wound into a roll is housed in the cylinder of the film supply part 2, and an exposure part is contained in the cylinder of the film winding part 3. A film winding chamber 3a for winding up photographic film 5 is provided respectively.

In this case, a film winding drum (film winding shaft) 6 is rotatably mounted in the cylinder of the film winding chamber 3a at its axial center. A display disc 6a is integrally formed at one end of the film winding drum 6. Further, when the film cassette 1 is loaded into the film loading chamber (not shown) on the endoscope camera side, the display disc 6a of the film winding drum 6 is provided with a film winding device on the endoscope camera side. A drive shaft insertion hole 6b is formed into which the drum drive shaft 7 can be inserted, for example, in a spline-fitting manner.

Further, a film exposure section 8 is formed between the film outlet of the film supply section 2 and the film inlet of the film winding section 3. The leading end of the film 5 contained in the film supply section 2 is introduced from the film outlet of the film supply section 2 through the film exposure section 8 into the film inlet of the film winding section 3, and the film is wound. Tori part 3
It is locked to the film winding drum 6 inside.

Furthermore, a film type display section 9 formed of a light reflector is provided on the outer surface of the film winding section 3.

In this case, the film winding section 3 includes a film winding drum 6.
A window portion 3b is formed to expose the display disk 6a to the outside. The film type display section 9 is formed by a character string 10 or symbol string, such as rOEsJ, displayed on the exposed surface of the display disk 6a through the window 3b, and indicates the type of film 5 contained therein. The format of the character string 10 or symbol string is changed accordingly, so that the type of film 5 can be identified by a character or symbol string reading mechanism 11 on the camera side. For example, in this embodiment, the name of the film cassette 1 is represented by the character string 10 rOEsJ, and the difference in ISO sensitivity of the film 5 is displayed by the difference in the size of the character string 10 rOEsJ. That is, as shown in FIG. 3, the film type display section 9a of the film cassette 1 in which the ISO sensitivity of the film 5 loaded therein is 100 indicates that the size of the character string 10 of rOEsJ is relatively small (A type). , in the case of the film type display section 9b of the film cassette 1 where the ISO sensitivity of the film 5 is 200, as shown in FIG. 4, the size of the character string 10 of rOEsJ is displayed larger than that in FIG. 3 (B type) are set respectively. The film type display section 9 of this display disk 6a is displayed on the film winding drum 6 of the film winding section 3.
It is designed to rotate with the In addition, character string 10
may be a trademark.

On the other hand, the character or symbol string reading mechanism 11 on the camera side is provided with an optical reading section 14 in which a light emitting element 12 and a line sensor (light receiving element) 13 are arranged in parallel. In this case, the light emitting element 12 is connected to a controller 15 formed by, for example, a microcomputer and its peripheral circuits.

Furthermore, the line sensor 13 is connected to the type detection section 1 of the film 5.
It is connected to the controller 15 via 6. Also,
A switch for detecting the opening/closing state of the lid of the film loading chamber on the camera side is connected to this controller 15, and a switch is connected to the film winding drum 6 via a motor control section 17.
A drive motor 18 is connected thereto. This drive motor 1
A pinion gear 18b fixed to the rotating shaft 18a of the film winding drum 7 is meshed with an input gear 19a of a drive gear mechanism 19 of the film winding drum drive shaft 7 formed by a gear train.

The output gear 19b of the drive gear mechanism 19 is meshed with a drive gear 7a fixed to one end of the film winding drum drive shaft 7.

Next, the operation of the above configuration will be explained with reference to the flowchart of FIG.

First, when the film cassette 1 is attached to the endoscope camera side (step 1), the film winding drum of the endoscope camera side is inserted into the drive shaft insertion hole 6b of the film winding section 3 of the film cassette 1. The drive shaft 7 is spline-fitted, and the film type display section 9 of the display disk 6a of the film winding section 3 is arranged to face the optical reading section 14 on the camera side. In this case, the film type display section 9 of the film cassette 1 is displayed as "0EsJ", which the user can visually confirm.
The type of film 5 contained in the film cassette 1 can be determined by the user visually confirming the pattern of the character string 10 on the film type display section 9. It is now possible to check. Also, after installing film cassette 1,
When the lid of the film loading chamber on the camera side is closed and the closing operation of the lid is detected by the controller 15 (step 2), the drive motor 18 of the film winding drum 6 is driven to rotate, and the film in the film cassette 1 is rotated. is skipped by a predetermined number of frames (step 3).

During this idle feeding operation of the film 5, the optical reading section 14 on the camera side is driven by the controller 15, and the display on the film type display section 9 of the film winding section 3 is read by the optical reading section 14 (step 4). ). That is, during the idle feeding operation of the film 5, the optical reading section 1
The light from the light emitting elements 12 of No. 4 is irradiated onto the display disk 6 a of the film winding section 3 , and the reflected light from the display disk 6 a is incident on the line sensor 13 . Then, the line sensor 13 reads the character string 10 of rOEsJ on the film type display section 9 displayed on the display disk 6a.

Further, the detection signal from the line sensor 13 is input to the controller 15 via the type detection section 16 of the film 5. Then, the type detection unit 1 determines whether the detection pattern of the read character string 10 of rOEsJ is type A or type B.
6 (steps 5, 6) The controller 15 determines the I of the film 5 according to the result of the determination.
SO sensitivity is set (step 7.8). Further, after setting the ISO sensitivity of the film 5, the film 5 is held in a release standby state, and when a photograph is taken in this state, each photographic processing routine is executed based on the set ISO sensitivity (step 9).

Additionally, if the detection pattern could not be determined based on the detection signal from the line sensor 13, a warning display element, such as an LED, attached to the outer surface of the endoscope camera body was turned on to issue a warning ( After step 10), the release is locked (step 11) and held in a state where photography cannot be taken.

Therefore, in the case of the above structure, the film cassette 1
The film type display section 9 is formed by the character string 10 of rOEsJ that can be visually confirmed by the user, and the pattern of the character string 10 of the film type display section 9 is visually confirmed by the user, thereby forming the film cassette 1. When the film cassette 1 is attached to the camera, the character or symbol string reading mechanism 11 on the camera side allows the user to check the type of film 5 contained in the film winding section 3. The character string 10 displayed on the type display section 9 is read, and the character string 10 to be read is read.
Since the type of film 5 contained in the built-in film 5 is identified according to the detection pattern of Film information to be detected on the side can be efficiently displayed at the same time. Therefore, in addition to various information such as the film type that the user wants to visually recognize on the outer surface of a single film cassette 1, as in the past, film information for the camera to detect is displayed separately. In comparison, the display on the outer surface of the film cassette 1 can be simplified and necessary information can be easily confirmed.

In addition, since the film type display section 9 is provided on the display disk 6a that moves in conjunction with the film winding drum 6 in the film winding section 3, the line sensor of the character or symbol string reading mechanism 11 on the camera side The length of the film type display section 9 on the moving direction side in 13 can be made smaller than the length of the film type display section 9, and the entire endoscope camera can be made smaller.

Furthermore, since a film type display section 9 is provided on the film winding section 3 side of the film cassette 1, the
Even when the bridge 4 is broken and the unnecessary film supply section 2 is discarded, leaving only the film winding section 3, the user can visually recognize various information such as the film type.

Further, FIGS. 6 to 8 show a second embodiment of the present invention.

As shown in FIG. 6, for example, rOEsJ
A film type display section 22 formed by a character string 21 or a symbol string such as . Furthermore, as shown in FIG. 7, this film type display section 22 includes a light-transmitting diffuser plate 22a and a cover 2 that covers the periphery of this diffuser plate 22a.
2b is provided. An illumination light introducing window 23 is formed on the lower surface of the film cassette 1 in the cover 22b. Further, an opening 24 corresponding to a character string 21 or a symbol string such as rOEsJ is formed in the cover 22b. The film type display section 22 also displays the illumination light introduction window 2.
By guiding the diffused light introduced into the diffuser plate 22a from 3 to the outside through this opening 24, a character string 21 or a symbol string such as rOEsJ is displayed.

Further, a reading mechanism 26 for the film type display section 22 of the film cassette 1 is provided on the main body 25 side of the endoscope camera. The reading mechanism 26 is provided with an illumination lamp 27 and an image sensor 28 such as a COD (solid-state image sensor). In this case, the illumination lamp 27 is disposed at a position facing the illumination light introduction window 23 of the film type display section 22 at a distance. Further, the image sensor 28 is arranged at a position facing away from the character string 21 or symbol string such as rOEsJ on the film type display section 22, and an imaging lens 29 is attached to the front surface of the image sensor 28. has been done.

Further, as shown in FIG. 8, the image sensor 28 is connected to a control circuit 32 via a drive circuit 30 of the image sensor 28 and a discrimination circuit 31 that discriminates the character string 21 or symbol string of the film type display section 22. It is connected. An operating circuit 33 is connected to this control circuit 32 for automatically setting camera exposure conditions and the like.

Therefore, in the case of the above structure, the film cassette 1
The user visually confirms the character string 21 or symbol string such as rOEsJ on the film type display section 22 formed on the outer peripheral surface of the cylinder of the film winding section 3. The type of film 5 can be confirmed by the user. After the film cassette 1 is attached to the main body 25 of the endoscopic camera, the lid of the film loading chamber on the camera side is closed, and the film 5 in the film cassette 1 is fed by a predetermined number of frames. During the idle feeding operation in step 5, the reading mechanism 26 on the camera body 25 side is driven. When the reading mechanism 26 is driven, the illumination light from the illumination lamp 27 is introduced from the illumination light introduction window 23 into the diffusion plate 22a of the film type display section 22, and then from inside this diffusion plate 22a through the opening 24 to the outside. By being led to the side, the character string 21 such as "OES"
Or a string of symbols is displayed. Furthermore, the character string 21 or symbol string such as rOEsJ on the film type display section 22 on the film cassette 1 side is imaged onto the image sensor 28 by the lens 29 on the camera side. The detection signal from the image sensor 28 is input to a discrimination circuit 31 via a drive circuit 30, and the discrimination circuit 31 discriminates the type of character string 21 or symbol string such as rOEsJ on the film type display section 22. In addition, this discrimination circuit 3
Based on the determination result from step 1, the control circuit 32 drives the operating circuit 33, and the exposure conditions of the camera, etc. are automatically set.

Therefore, even with the above configuration, the character string 2 of rOEsJ allows the user to visually check the film type display section 22 of the film cassette 1 as in the first embodiment.
1, and by visually checking the pattern of the character string 21 on the film type display section 22, the user can confirm the type of film 5 contained in the film cassette 1. When the film cassette 1 is mounted on the camera side, the character string 21 displayed on the film type display section 22 of the film winding section 3 is read by the character or symbol string reading mechanism 26 on the camera side. Since the type of film 5 contained in the built-in film 5 is identified according to the detection pattern of Film information to be detected on the side can be efficiently displayed at the same time. Therefore, in this case, as in the first embodiment, the display on the outer surface of the film cassette 1 can be simplified and necessary information can be easily confirmed.

Furthermore, FIGS. 9 to 12 show a third embodiment of the present invention.

As shown in FIG. 9, the film type is formed by a character string 42 or symbol string such as rOEsJ by a protrusion 41 protruding from the outer peripheral surface of the cylinder of the film winding section 3 in the film cassette 1. A display section 43 is provided. Furthermore, as shown in FIG. 10, a reading mechanism 45 for the film type display section 43 of the film cassette 1 is provided on the main body 44 side of the endoscope camera. This reading mechanism 45 is provided with a matrix-shaped pressure sensor 46, as shown in FIG. In this pressure sensor 46, a large number of pressure detection elements 47... are arranged in a matrix shape vertically and horizontally. In addition, the second pressure sensor 4
6, the sensor mounted on the camera body 44 side is elastically supported by a bracket 48 via an elastic member 49 such as a spring. Furthermore, this pressure sensor 46 is connected to a control section 50 that includes, for example, a microcomputer and its peripheral circuits. The control unit 50 includes a drive circuit for the pressure sensor 46 and each pressure detection element 47 of the pressure sensor 46.
A discriminating circuit for discriminating a character string 42 or a symbol string on the film type display section 43 according to detection data from the film type display section 43 is incorporated in each. Further, this control section 50 includes a reference pattern setting circuit 51 in which a correct reference pattern of the character string 42 or symbol string of the film type display section 43 is set, and an operation circuit 52 that automatically sets the camera's exposure conditions, etc. It is connected.

Therefore, in the case of the above structure, the film cassette 1
The user visually confirms the character string 42 or symbol string such as rOEsJ on the film type display section 43 formed on the outer peripheral surface of the cylinder of the film winding section 3. The type of film 5 can be confirmed by the user. Further, when the film cassette 1 is attached to the main body 44 side of the endoscope camera, the pressure sensor 46 is connected to the protrusion 41 of the film type display section 43.
Pressed by In this case, as shown by the hatched area in FIG. 11, among the matrix-shaped pressure detection elements 47 of the pressure sensor 46, the pressure detection elements 47 pressed by the protrusion 41 of the film type display section 43...・ is operated to turn on, and the other pressure detection elements 47 are held in the off state, and the film type display section 43 corresponds to whether each pressure detection element 47 is turned on or off. Detection data is output. Furthermore, the detection data from this pressure sensor 46 is transmitted to the control unit 5o.
The reference pattern data from the reference pattern setting circuit 51 and the detection data from the pressure sensor 46 are compared in the control section 5o, and the character strings such as rOEsJ on the film type display section 43 are inputted into the control section 5o. 42 or the type of symbol string is determined, and based on the result of this determination, an operating circuit 52 is driven to automatically set camera exposure conditions and the like. Note that the pressure sensor 46 is mounted on the camera body 44 using the bracket 48.
By elastically supporting the pressure sensor 46 via an elastic member 49 such as a spring, it is possible to prevent abnormal pressure from acting on the pressure sensor 46 due to manufacturing errors of the film cassette 1 or the like.

Therefore, in this case as well, the first. The same effects as in the second embodiment can be obtained.

Further, FIGS. 13 and 14 show disclosed examples.

This is the film supply section 2 in the film cassette 1.
A plurality of perforations 61 are formed in the film 5 exposed in the film exposure section 8 between the film winding section 3 and the film winding section 3. film type display section 63
It has been established. Furthermore, as shown in FIG. 14, an optical reading mechanism 64 for the film type display section 63 of the film cassette 1 is provided on the main body side of the endoscope camera. This reading mechanism 64 is provided with a light emitting element 65 such as a light emitting diode, and a line sensor (light receiving element) 66. In this case, the movement operation mechanism 67 is located between a film exposure position in which the light emitting element 65 is projected to a position facing the film 5 on the film exposure section 8 within the camera body and a retracted position in which it is retracted from this film exposure position. In FIG. 14, a first plunger 68 is provided which is operated to move in the vertical direction. The iron core 68a of the first plunger 68 is urged in the direction of the film exposure position by a coil spring 68b, and when the first plunger 68 is energized, the iron core 68a resists the urging force of the coil spring 68b.
a is operated to move toward the retracted position.

Further, a locking step portion 68c is formed on the outer peripheral surface of the iron core 68a of the first plunger 68.

Further, this moving operation mechanism 67 is provided with a second plunger 69 for locking the light emitting element 65 in a state in which it has been moved to the retracted position.

The iron core 69a of this second plunger 69 is connected to the coil spring 6
When the second plunger 69 is energized, the iron core 69a is moved in the retracting direction against the urging force of the coil spring 69b.

Furthermore, the line sensor 66 of the reading mechanism 64 is attached to a pressure plate 70 for holding down the film 5 inside the camera body.

The line sensor 66 is arranged to face and be spaced apart from the light emitting element 65 which protrudes in the direction of the film exposure position.
The film 5 on the film exposure section 8 is interposed between the line sensor 66 and the light emitting element 65.

Therefore, in the case of the above structure, the film cassette 1
The film type display section 63 consists of a plurality of perforations 61 made in the film 5 which is exposed in the film exposure section 8 between the film supply section 2 and the film winding section 3 in . By visually checking the character string 62 or symbol string such as "OES", the user can confirm the type of film 5 contained in the film cassette 1. Further, when the film cassette 1 is attached to the main body side of the endoscopic camera, the light emitting element 65 is projected in the direction of the film exposure position, and the film 5 on the film exposure section 8 is placed between the line sensor 66 and the light emitting element 65. is maintained in the inserted state. Furthermore, after the film cassette 1 is installed, the lid of the film loading chamber on the camera side is closed, and the film 5 in the film cassette 1 is fed by a predetermined number of frames. Mechanism 64 is activated.

When the reading mechanism 64 is driven, the illumination light from the light emitting element 65 forms the perforation 61 of the film type display section 63 that forms a character string 62 or symbol string such as rOEsJ on the film 5.
, and is guided to the line sensor 66 on the pressure plate 70.

Then, the character string 62 or symbol string such as rOEsJ formed by the perforations 61 on the film 5 is read by this line sensor 66, and the type of character string 62 or symbol string such as rOEsJ on the film type display section 63 is read. is determined, and the camera's exposure conditions, etc. are automatically set based on this determination result.

Further, when the exposure conditions and the like of the camera are automatically set, the blank feeding operation of the film 5 is stopped at the first frame photographing position.

Next, the first plunger 68 of the moving operation mechanism 67 is energized, the iron core 68a is moved in the direction of the retracted position against the biasing force of the coil spring 68b, and the light emitting element 65 is moved to the retracted position. With the light emitting element 65 moved to the retracted position, the core 69a of the second plunger 69 is projected by the biasing force of the coil spring 69b and is locked to the locking step 68c of the core 68a of the first plunger 68. Ru.

Furthermore, when the shooting of a predetermined number of frames is completed, the second plunger 69 is energized and the iron core 69g is moved in the retracting direction, so that the iron core 68a of the first plunger 68 is locked with the locking stepped portion 68c. is canceled. Therefore, the iron core 68a of the first plunger 68 is returned toward the protruding position by the urging force of the coil spring 68b, and the light emitting element 65 is returned to the initial state of being protruded toward the film exposure position.

Therefore, in this case as well, the same effects as in the first to third embodiments can be obtained.

It should be noted that this invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the invention.

[Effects of the Invention] According to the invention set forth in claim (1), when a film cassette is mounted on the camera side, characters provided on the outer surface of the film winding section are read by a character or symbol string reading mechanism on the camera side. The system allows the user to visually check the outer surface of the compact film cassette, which has a relatively small surface area, by having the user read the symbol string and identify the type of film contained in the film according to the type of the character or symbol string being read. It is possible to efficiently display various information such as the film type recognized by the camera and film information for the camera to detect at the same time, and the display on the outer surface of the film cassette is simplified, making it easier to confirm the necessary information. can do.

Further, according to the invention of claim (2), the film type display section is provided on a moving member that moves in conjunction with the film winding shaft in the film winding section, so that characters or symbol strings on the camera side can be displayed. The length of the film type display section in the moving direction of the reading mechanism can be made smaller than the length of the film type display section, and the character or symbol string reading mechanism on the camera side can be made smaller.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of the present invention, in which FIG. 1 is a plan view of a film cassette, and FIG. 2 is a schematic configuration diagram showing a state in which the film cassette is loaded into the camera body. , FIG. 3 is a plan view showing the A type film type display section of the film cassette, FIG. 4 is a plan view showing the B type film type display section of the film cassette, and FIG. 5 explains the film type identification operation. 6 to 8 show a second embodiment of the present invention, and FIG. 6 is a schematic configuration diagram illustrating the operation for identifying the film type of a film cassette. Fig. J7 is a vertical cross-sectional view of the same essential part, Fig. 8 is a block diagram showing means for identifying the film type of the film cassette, and Figs. 9 to 12 show a third embodiment of the present invention. Fig. 9 is a perspective view showing the film type display section of the film cassette, Fig. 10 is a schematic configuration diagram of the reading mechanism on the camera side, Fig. 11 is a plan view of the pressure sensor, and Fig. 12 shows the reading state by the pressure sensor. A plan view, FIG. 13, and FIG. 14 show the disclosed example, and FIG. 13 is a perspective view showing a film type display section of a film cassette, and FIG. 14 is a schematic configuration diagram of a reading mechanism on the camera side. 2... Film supply section, 3... Film winding section, 4
...Bridge, 5...Film, 9.22°43.
...Film type display section.

Claims (2)

[Claims] (1) A film supply section containing an unexposed film, and a film exposure section provided at a distance from the film supply section, and forming the film supplied from the film supply section between the film supply section and the film supply section. a bridge that connects the film supply section and the film winding section; and a built-in bridge formed by a string of characters or symbols provided on the outer surface of the film winding section. The film type display section is characterized in that the mode of the character or symbol string is changed depending on the type of film to be used, and the type of film can be identified by a mechanism for reading the character or symbol string on the camera side. film cassette. (2) The film cassette according to claim 1, wherein the film type display section is provided on a moving member that moves in conjunction with a film winding shaft in the film winding section.