JP2874968B2 - Film cassette - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a film cassette used in an endoscope camera.

2. Description of the Related Art In general, as a film cassette used in an endoscope camera, for example, Japanese Patent Application Laid-Open Nos.
As shown in JP-A-60318, a cassette main body is provided with a film supply section containing an unexposed film and a film take-up section for winding a film supplied from the film supply section. There is known a configuration in which a film and a film winding unit are connected by a bridge. After filming, this film cassette
Break the bridge and throw away the unnecessary film supply section,
Only the film take-up section can be sent for development, so that the photographed film cassette is prevented from becoming bulky.

On the surface of this type of film cassette, information such as the type of film loaded in the cassette, for example, the name of the maker, the name of the product, the number of frames, etc., is normally displayed by the user. On the other hand, the camera
There is also known a device in which a barcode, a detection hole, or the like is provided on a film surface or an outer surface of a film cassette so that information such as sensitivity and the number of frames can be detected.

[Problem to be Solved by the Invention] In the above-mentioned conventional configuration, the camera surface side detects various kinds of information such as a film type that the user wants to visually recognize on the outer surface of one film cassette. Since the film information of each was displayed separately,
Displaying such a large amount of information on the limited outer surface of a compact film cassette having a relatively small surface area has been a difficult problem. Therefore, when these various types of film information are provided in a compact film cassette, the display locations of these various types of information are limited.

In addition, the display unit, such as a bar code, that transmits information such as the ISO sensitivity and the number of frames of the film to the endoscope camera cannot be known at all even if the user looks at it. It doesn't make sense. Therefore, these displays complicate the display of the outer surface of the film cassette and make it difficult to visually confirm necessary information to be transmitted to the user. There is a problem that mistakes such as a mistake in setting a film cassette, such as loading the film cassette, are likely to occur.

The present invention has been made in view of the above circumstances, and various types of information such as a film type to be visually recognized by a user on the outer surface of a compact film cassette having a relatively small surface area and film information to be detected by a camera. It is an object of the present invention to provide a film cassette which can simultaneously and efficiently display information, simplify display of the outer surface of the film cassette, and facilitate confirmation of necessary information.

[Means for Solving the Problems] The invention according to claim (1) is provided with a film supply unit containing a film that has not been exposed and a distance from the film supply unit, and is supplied from the film supply unit. A film winding unit that winds a film through a film exposure unit formed between the film feeding unit, a bridge that connects the film feeding unit and the film winding unit, and an outside of the film winding unit. Formed on the surface, has a different character or symbol string mode depending on the type of film to be built in, either directly viewing and using the above character or symbol string reading mechanism on the camera side, A film type display unit capable of identifying a film type by the same character or symbol string.

In the invention of claim (2), the film type display section is provided on a moving member which moves in conjunction with a film winding shaft in the film winding section.

[Operation] According to the invention of claim (1), the same method is applied to both of the method in which the user directly looks at the film type display portion of the film cassette and the method in which the character or symbol string reading mechanism on the camera side is used. Formed by letters or symbols that can identify the type of film with letters or symbols,
The user can visually confirm the form of the character or symbol string in the film type display section so that the user can confirm the type of the film contained in the film cassette and, at the same time, place the film cassette on the camera side. When it is mounted, the character or symbol string reading mechanism on the camera side reads the character or symbol string provided on the outer surface of the film winding unit, and is built in according to the form of the character or symbol string to be read. The type of the film is identified.

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

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

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

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

As shown in FIG. 2, a film supply chamber 2a containing an unexposed film 5 wound in a roll shape is provided in the cylinder of the film supply section 2, and an exposed film is provided in the cylinder of the film take-up section 3. A film winding chamber 3a for winding the photographic film 5 is provided. In this case, a film take-up drum (film take-up shaft) 6 is provided in the cylinder of the film take-up chamber 3a.
Is rotatably mounted. A display disk 6a is integrally formed at one end of the film winding drum 6. Further, when the film cassette 1 is loaded in the film loading chamber of the endoscope camera (not shown) at the axial center of the display disk 6a of the film winding drum 6, the film winding of the endoscope camera is performed. A drive shaft insertion hole 6b into which the drum drive shaft 7 can be inserted, for example, so as to be able to be splined is formed.

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 unit 2 is introduced from the film outlet of the film supply unit 2 into the film entrance of the film take-up unit 3 via the film exposure unit 8, and It is locked on a film winding drum 6 in the take-up section 3.

Further, on the outer surface of the film winding section 3, a film type display section 9 formed by a light reflector is provided. In this case, the film winding section 3 is formed with a window 3b for exposing the display disk 6a of the film winding drum 6 to the outside. The film type display section 9 is formed by a character string 10 or a symbol string such as "OES" displayed on the exposed surface of the display disk 6a from the window 3b. Character string 10 according to type
Alternatively, the type of the film 5 can be identified by the character or symbol string reading mechanism 11 on the camera side by changing the form of the symbol string. For example, in this embodiment, "OE
The character string 10 of "S" indicates the name of the film cassette 1, and the difference in the size of the character string 10 of "OES" indicates the difference in the ISO sensitivity of the film 5. 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 is relatively small as shown in FIG. Type), IS of film 5
O Type sensitivity display of film cassette 1 with 200 sensitivity
In the case of 9b, as shown in FIG.
The size of the character string 10 of "S" is set to a large display (B type). The film type display section 9 of the display disk 6a rotates together with the film winding drum 6 of the film winding section 3. Note that the character string 10 may be a trademark.

On the other hand, an optical reading unit 14 in which a light emitting element 12 and a line sensor (light receiving element) 13 are juxtaposed is provided in a character or symbol string reading mechanism 11 on the camera side. In this case, the light emitting element 12 is connected to, for example, a controller 15 formed by a microcomputer and its peripheral circuits. Further, the line sensor 13 is a type detecting unit of the film 5.
It is connected to the controller 15 via 16. The controller 15 is connected to a switch for detecting the open / close state of a lid of a film loading chamber on the camera side, and is connected to a drive motor 18 of the film winding drum 6 via a motor control unit 17. . A pinion gear 18b fixed to a rotation shaft 18a of the drive motor 18 is provided with a drive gear mechanism 19 of a film winding drum drive shaft 7 formed by a gear train.
Of the input gear 19a. This drive gear mechanism 19
The output gear 19b 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 described with reference to the flowchart of FIG.

First, when the film cassette 1 is mounted on 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, since the film type display section 9 of the film cassette 1 is formed by the character string 10 of "OES" that can be visually confirmed by the user, the pattern of the character string 10 of the film type display section 9 is displayed by the user. Is visually confirmed, so that the user can confirm the type of the film 5 built in the film cassette 1. After the film cassette 1 is mounted, 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), and the drive motor 18 of the film winding drum 6 is driven to rotate. Then, the film 5 in the film cassette 1 is fed by a predetermined number of frames (step 3).

During the idle feeding operation of the film 5, the controller 15 drives the optical reading section 14 on the camera side, and the optical reading section 14 reads the display of the film type display section 9 of the film winding section 3 (step 4). ). That is, during the idle feeding operation of the film 5, the light from the light emitting element 12 of the optical reading unit 14 is applied to the display disk 6a of the film winding unit 3, and the reflected light from the display disk 6a is applied to the line. The light is incident on the sensor 13. Then, the character string 10 of "OES" of the film type display section 9 displayed on the display disk 6a is read by the line sensor 13.

The detection signal from the line sensor 13 is input to the controller 15 via the type detection unit 16 of the film 5. Then, the type detection unit 16 determines whether the detection pattern of the read “OES” character string 10 is the A type or the B type (steps 5 and 6). Is set (steps 7 and 8). Further, after the ISO sensitivity of the film 5 is set, it is held in a release standby state, and when a photograph is taken in this state, the respective photographic processing routines are executed based on the set ISO sensitivity (step 9).

When the detection pattern cannot be determined based on the detection signal from the line sensor 13, a warning display element such as an LED mounted on the outer surface of the main body of the endoscope camera is turned on to issue a warning ( After step 10), the release lock is performed (step 11), and the photographing is held in an impossible state.

Therefore, in the above configuration, the film type display section 9 of the film cassette 1 is formed by a character string 10 of “OES” that can be visually confirmed by a user. When the user visually checks the pattern, the type of the film 5 contained in the film cassette 1 can be confirmed by the user, and when the film cassette 1 is mounted on the camera side, the characters on the camera side are displayed. Further, the display character string 10 on the film type display section 9 of the film winding section 3 is read by the symbol string reading mechanism 11, and the type of the built-in film 5 is identified according to the detection pattern of the read character string 10. As a result, various information such as the type of film that the user can visually recognize on the outer surface of the compact film cassette 1 having a relatively small surface area. The information and the film information to be detected by the camera can be simultaneously and efficiently displayed. Therefore, as in the conventional case, in addition to various kinds of information such as a film type that the user wants to visually recognize on the outer surface of one film cassette 1 and film information to be detected by the camera, each is separately displayed. In comparison, the display on the outer surface of the film cassette 1 is simplified, and necessary information can be easily checked.

Further, since the film type display section 9 is provided on the display disk 6a which 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 is provided. In FIG. 13, the length of the film type display section 9 on the moving direction side can be made smaller than the length of the film type display section 9, and the entire endoscope camera can be downsized.

Further, since the film type display section 9 is provided on the film take-up section 3 side of the film cassette 1, after the photographing is completed, the bridge 4 is folded and the film supply section 2 becomes unnecessary.
Is discarded and only the film winding unit 3 is used, and the user can visually recognize various information such as the film type.

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

As shown in FIG. 6, for example, "OES"
And the like, and a film type display section 22 formed by a character string 21 or a symbol string. Further, as shown in FIG. 7, the film type display section 22 has a light-transmitting diffusion plate.
22a and a cover 22b that covers the periphery of the diffusion plate 22a are provided. An illumination light introducing window 23 is formed on the lower surface of the film cassette 1 in the cover 22b. The cover 22b has an opening 24 corresponding to a character string 21 or a symbol string such as "OES". Then, the film type display unit 22 guides the diffused light introduced into the diffusion plate 22a from the illumination light introduction window 23 to the outside through the opening 24,
It is configured to display a character string 21 or a symbol string such as “OES”.

A reading mechanism 26 of 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 CCD (solid-state imaging device). In this case, the illumination lamp 27 is disposed at a position facing away from the illumination light introduction window 23 of the film type display unit 22. Further, the image sensor 28 is disposed at a position facing away from the character string 21 or the symbol string such as “OES” on the film type display section 22, and an image forming lens 29 is provided on the front surface of the image sensor 28. Is installed. As shown in FIG. 8, the image sensor 28 is connected to a control circuit 32 via a drive circuit 30 for the image sensor 28 and a discrimination circuit 31 for discriminating a character string 21 or a symbol string of the film type display section 22 in order. ing. The control circuit 32 is connected to an operation circuit 33 for automatically setting the exposure conditions and the like of the camera.

Therefore, in the above configuration, the character string 21 such as "OES" or the symbol string such as "OES" on the film type display section 22 formed on the outer peripheral surface of the cylinder of the film winding section 3 of the film cassette 1 is used by the user. Is visually confirmed, so that the user can confirm the type of the film 5 built in the film cassette 1. After the film cassette 1 is mounted on the body 25 of the endoscope camera,
The lid of the film loading chamber on the camera side is closed, and the film 5 in the film cassette 1 is idle-fed by a predetermined number of frames.
26 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 unit 22, and then the diffusion plate 2
The character string 21 or the symbol string such as “OES” is displayed by being guided from the inside of 2a to the outside via the opening 24.
Further, a character string 21 or a symbol string such as "OES" on the film type display section 22 on the film cassette 1 side is imaged on an image sensor 28 by a lens 29 on the camera side. The detection signal from the image sensor 28 is
The character string 21 or the symbol string such as “OES” of the film type display section 22 is discriminated by the discriminating circuit 31.
The operation circuit 33 is driven by the control circuit 32 on the basis of the determination result from, and the exposure conditions and the like of the camera are automatically set.

Therefore, even in the above-described configuration, the film type display section 22 of the film cassette 1 is formed by the character string 21 of "OES" that can be visually confirmed by the user, as in the first embodiment. By the user visually confirming the pattern of the character string 21 of the display unit 22,
The type of the film 5 contained in the film cassette 1 can be confirmed by the user, and when the film cassette 1 is mounted on the camera side, a character or symbol string reading mechanism 26 on the camera side allows the film take-up section. 3, the display character string 21 of the film type display section 22 is read, and the type of the built-in film 5 is identified according to the detection pattern of the read character string 21. Various information such as the type of film visually recognized by the user on the outer surface of the film cassette 1 and film information to be detected by the camera can be simultaneously and efficiently displayed. Therefore, also in this case, similarly to the first embodiment, the display on the outer surface of the film cassette 1 can be simplified, and confirmation of necessary information can be facilitated.

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

This is formed by a character string 42 such as "OES" or a symbol string by a projection 41 protruding from the outer peripheral surface of the cylinder of the film winding section 3 in the film cassette 1 as shown in FIG. A film type display section 43 is provided. Further, as shown in FIG. 10, a film type display portion of the film cassette 1 is provided on the main body 44 side of the endoscope camera.
43 reading mechanisms 45 are provided. This reading mechanism 45
As shown in FIG. 11, a matrix-shaped pressure sensor 46 is provided.
Is provided. The pressure sensor 46 has a large number of pressure detecting elements 47 arranged in a matrix in a matrix. The pressure sensor 46 is elastically supported by a sensor mounting bracket 48 on the camera body 44 side via an elastic member 49 such as a spring. Further, the pressure sensor 46 is, for example, a control unit incorporating a microcomputer and its peripheral circuits.
Connected to 50. The control unit 50 has a character string 42 of the film type display unit 43 in accordance with detection data from the drive circuit of the pressure sensor 46 and the pressure detection elements 47 of the pressure sensor 46.
Alternatively, a discriminating circuit for discriminating a symbol string is incorporated therein. Further, the control unit 50 includes a reference pattern setting circuit 51 in which a correct reference pattern of the character string 42 or the symbol string of the film type display unit 43 is set, and an operation circuit 52 for automatically setting the exposure conditions of the camera and the like. It is connected.

Therefore, in the above configuration, the user can display the character string 42 or the symbol string such as “OES” of the film type display section 43 formed on the outer peripheral surface of the cylinder of the film take-up section 3 of the film cassette 1. By visually confirming, the type of the film 5 contained in the film cassette 1 can be confirmed by the user. Also. When the film cassette 1 is mounted on the main body 44 side of the endoscope camera, the pressure sensor 46 is pressed by the projection 41 of the film type display unit 43. In this case, as shown by the hatched portions in FIG. 12, only the pressure detecting elements 47 pressed by the projection 41 of the film type display section 43 among the pressure detecting elements 47 in a matrix of the pressure sensor 46 are turned on. Is operated, and the other pressure detection elements 47 are kept in an off state.
The detection data of the film type display section 43 according to the ON / OFF state of each of the pressure detection elements 47 is output.
Further, the detection data from the pressure sensor 46 is transmitted to the control unit 50.
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 unit 50, and “OES” and the like of the film type display unit 43 are compared. The type of the character string 42 or the symbol string is determined, and based on the determination result, the operation circuit is determined.
52 is driven, and the exposure conditions and the like of the camera are automatically set. The pressure sensor 46 is connected to the camera body.
An elastic member 49 such as a spring is attached to the sensor mounting bracket 48 on the 44 side.
By elastically supporting the pressure sensor 46, an abnormal pressure can be prevented from acting on the pressure sensor 46 due to a manufacturing error of the film cassette 1 or the like.

Therefore, also in this case, the same effects as in the first and second embodiments can be obtained.

FIG. 13 and FIG. 14 show examples of disclosure.

This is achieved by, for example, “OES” by a plurality of perforations 61 formed in the film 5 exposed in the film exposure unit 8 between the film supply unit 2 and the film winding unit 3 in the film cassette 1. And the like, and a film type display section 63 formed by a character string 62 or a symbol string. Further, as shown in FIG. 14, a film type display section of the film cassette 1 is provided on the main body side of the endoscope camera.
63 optical reading mechanisms 64 are provided. The reading mechanism 64 includes a light emitting element 65 such as a light emitting diode and a line sensor (light receiving element) 66. In this case, the moving operation mechanism 67 has a position between the film exposure position where the light emitting element 65 is protruded to the position facing the film 5 on the film exposure unit 8 in the camera body and the retracted position retracted from the film exposure position. In FIG. 14, a first plunger 68 is provided which moves vertically. The iron core 68a of the first plunger 68 is urged in the direction of the film exposure position by a coil spring 68b. When the first plunger 68 is energized, the iron core 68a moves against the urging force of the coil spring 68b. It is made to move in the direction. Further, a locking step 68c is formed on the outer peripheral surface of the iron core 68a of the first plunger 68.

Further, the moving operation mechanism 67 is provided with a locking second plunger 69 for locking the light emitting element 65 in a state where the light emitting element 65 is moved to the retracted position. The iron core 69a of the second plunger 69 is urged in the projecting direction by a coil spring 69b, and when power is supplied to the second plunger 69, the iron core 69a moves in the immersion direction against the urging force of the coil spring 69b. It is being operated.

Further, the line sensor 66 of the reading mechanism 64 is mounted on a pressure plate 70 for holding down the film 5 in the camera body. The line sensor 66 is spaced apart from the light emitting element 65 protruding in the direction of the film exposure position, and the film 5 on the film exposure section 8 is inserted between the line sensor 66 and the light emitting element 65. ing.

Thus, in the above-described configuration, a plurality of perforations formed in the film 5 which is disposed in the film exposure section 8 between the film supply section 2 and the film winding section 3 in the film cassette 1 in an exposed state. The user can visually check the character string 62 or symbol string such as "OES" on the film type display section 63 composed of 61 ... so that the user can confirm the type of the film 5 built in the film cassette 1. It has become. Further, when the film cassette 1 is mounted on the main body side of the endoscope camera, the light emitting element 65 protrudes in the direction of the film exposure position, and the film 5 on the film exposure section 8 is interposed between the line sensor 66 and the light emitting element 65. Is kept inserted. Furthermore, after the film cassette 1 is mounted, the lid of the film loading chamber on the camera side is closed, and the film 5 in the film cassette 1 is idle-fed by a predetermined frame. 64 is driven. When the reading mechanism 64 is driven, the illuminating light from the light emitting element 65 passes through the perforations 61 of the film type display section 63 forming a character string 62 such as “OES” or a symbol string on the film 5 and a line sensor on the pressure plate 70. Guided to 66.
A character string 62 or symbol string such as “OES” formed by perforations 61 on the film 5
6 and “OES” in the film type display 63
And the type of the character string 62 or the symbol string, and the exposure conditions of the camera are automatically set based on the result of the determination.

Also, if the exposure conditions of the camera are automatically set, 1
The idle feeding operation of the film 5 is stopped at the photographing position of the frame. Next, power is supplied to the first plunger 68 of the moving operation mechanism 67, the iron core 68a is moved in the retreat position direction against the urging force of the coil spring 68b, and the light emitting element 65 is moved to the retreat position. With the light emitting element 65 moved to the retracted position, the core 69a of the second plunger 69 is protruded by the urging force of the coil spring 69b, and the core 6 of the first plunger 68 is moved.
It is locked by the locking step 68c of 8a.

Further, when the photographing of the predetermined number of frames is completed, the second plunger 69 is energized, and the iron core 69a is moved in the immersion direction, so that the first plunger 68 is locked with the locking step 68c of the iron core 68a. Is released. Therefore, the iron core 68a of the first plunger 68 returns to the protruding position direction by the urging force of the coil spring 68b, and returns to the initial state in which the light emitting element 65 protrudes toward the film exposure position.

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

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

[Effects of the Invention] According to the invention of claim (1), the outer surface of the film winding portion has a different character or symbol string mode depending on the type of the built-in film and can be directly viewed. In either method of using a character or symbol string reading mechanism on the camera side, a film identification display portion capable of identifying the type of film with the same character or symbol string is formed, so that the surface area is relatively small and compact. Various types of information such as film type that the user can visually recognize on the outer surface of the film cassette and film information to be detected by the camera can be displayed simultaneously and efficiently, and the display on the outer surface of the film cassette is simplified. And
Confirmation of necessary information can be facilitated.

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

[Brief description of the drawings]

1 to 5 show a first embodiment of the present invention. FIG. 1 is a plan view of a film cassette, and FIG. 2 is a schematic configuration diagram showing a state where the film cassette is loaded in a camera body. FIG. 3 is a plan view showing an A type film type display section of the film cassette, FIG. 4 is a plan view showing a B type film type display section of the film cassette, and FIG. FIGS. 6 to 8 show a second embodiment of the present invention. FIG. 6 is a schematic configuration diagram for explaining the operation of identifying the film type of a film cassette, and FIG. FIG. 8 is a block diagram showing a means for identifying the film type of the film cassette, FIGS. 9 to 12 show a third embodiment of the present invention, and FIG. Cassette film type table FIG. 10 is a schematic configuration diagram of a reading mechanism on the camera side, FIG. 11 is a plan view of a pressure sensor, FIG. 12 is a plan view showing a reading state by the pressure sensor, FIG. 13 and FIG. FIG. 13 shows a disclosure example. 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 a camera side. 2 ... Film supply section, 3 ... Film winding section, 4 ...
Bridge, 5 …… Film, 9,22,43 …… Film type display.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Atsushi Kiwara, Inventor 2-43-2, Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Kiyoshi Tsuji 2-43-2, Hatagaya, Shibuya-ku, Tokyo Within Olympus Optical Co., Ltd. (72) Inventor Teruaki Sugita 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (58) Fields investigated (Int. Cl. ⁶ , DB name) G03B 7 / 00-7/28 G03C 3/00

Claims (2)

(57) [Claims] 1. A film supply unit containing an unexposed film, provided at a distance from the film supply unit, and a film supplied from the film supply unit is formed between the film supply unit and the film supply unit. A film winding unit that winds through a film exposure unit, a bridge that connects the film supply unit and the film winding unit, and a film that is formed on an outer surface of the film winding unit and that corresponds to a type of a built-in film. The type of film can be identified by the same character or symbol string, both in direct viewing and by using the character or symbol string reading mechanism on the camera side. A film cassette comprising: a film type indicator; 2. A film cassette according to claim 1, wherein said film type display section is provided on a moving member which moves in conjunction with a film winding shaft in said film winding section. .