JPH02113230A - Camera for film cartridge - Google Patents

Abstract

PURPOSE:To requires no extra space behind a lens and to reduce restrictions and increase the degree of design freedom by loading a film cartridge in a camera, and driving respective mechanisms properly and performing feeding operation and take-up operation for the film. CONSTITUTION:The cartridge 39 is loaded in the film cartridge storage chamber 40 in the camera main body 31 so that it can be unloaded. Then the camera main body 31 is equipped with a take-up driving part which drives a film take-up driving member 130, a sending-out driving part which drives a film sending-out driving member 130, and a film chamber 37 where the sent-out film is stored. Thus, the film cartridge 39 consisting of the part for storing the film 26 is used, so neither a space for support member storage for film exposure nor a space for spool chamber storage is required to remove large restriction to the design of the camera.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a film cartridge camera that uses a film cartridge having a film feeding mechanism and a winding mechanism, and particularly relates to a film cartridge camera that uses a film cartridge having a film feeding mechanism and a winding mechanism. The present invention relates to a film cartridge camera that performs film winding and feeding operations.

2. Description of the Related Art Conventionally, in cameras, a film cartridge containing unused film is removably housed in the camera to perform photographing operations.

Such film cartridges generally have a film and a film winding shaft for winding the film housed in a case having a film entrance/exit (135
The type film patrone) is well known. This 13
In the type 5 film cartridge, when the film is unused, the leading end of the film protrudes a certain length from the film entrance/exit opening. To set this 135-inch film cartridge into the camera body, proceed as follows. That is, as shown in FIGS. 12 and 13, first, the back fE4 of the camera body 1 is opened and the 135-inch film cartridge 2 is stored in the cartridge storage chamber lO at the left end of the camera body l in FIG. At the same time, pull out the film 8 from the cartridge 2 and insert its tip 8a into the spool chamber at the right end in the figure. Notch 3 of spool 3 inside i
a, connect the tip 8a of the film 8 and the spool 3, and close the back cover 4 of the camera body l.

However, in the cartridge, the length of the leading end 8a of the film 8 coming out from the film opening varies depending on the product, and the distance between the cartridge storage chamber lO and the spool chamber 11 varies depending on the camera model. Therefore, the camera user must always adjust the length of the film 8 exposed from the film opening of the 135-inch film cartridge 2, and such adjustment work is troublesome. In addition, since the film 8 is flexible and has curls, in particular,
Inserting the leading end 8a of the film 8 into the notch 3a of the spool 3 is a difficult task for a person who is not accustomed to using a camera.

Depending on the camera model, it is sufficient to simply place the leading end 8a of the film 8 on the spool 3, and the connection between the two is automatically performed by an automatic locking mechanism within the camera. Even in the case of a camera, the camera user must adjust the length of the film 8 coming out of the film opening so that the leading end 8a of the film 8 is located at a predetermined position on the spool 3. Ta.

In order to solve this problem, a film cartridge was devised that does not require the work of adjusting the length of the film or the work of connecting the film to the spool, and can simply be stored in the camera body. That is, as shown in FIG.
a film winding chamber 50a provided with a film winding shaft;
An example of this is a film cartridge 50 (110 type film cartridge) that is integrally constructed with a spool chamber 50b in which a spool is provided and a film exposure support section 50c interposed between these chambers. 51-14
No. 382). In this 20-inch film cartridge 50, the leading end of an unused film and the spool are connected in advance.

This l! 0 type film cartridge 50 to camera body 60
To set it inside the camera and make it ready for taking photos,
Open the back cover 61 of the camera body 60 and insert the 110-inch film cartridge 50 into the cartridge storage compartment 6 of the camera body 60.
All you have to do is store it in 0a and close the back M61.

Problems to be Solved by the Invention However, in the 110-inch film cartridge 50, the film winding chamber 50a and the spool chamber 50
The film exposure support part 50c is provided between the camera body 60 and the camera body 60, and the film exposure support part 50c is housed behind the lens. For this reason, when storing the film cartridge inside the camera body, it is necessary to
Compared to the storage space of the 35-inch Film Patrone 2,
In the 110-inch film cartridge 50, an extra space is required behind the lens to accommodate the film exposure support portion 50c, which poses a major limitation in the design of the camera.

Further, in the 110-inch film cartridge 50, the film winding chamber 50a and the spool chamber 50b protrude further forward than the film exposure support section 50c on both left and right sides of the film exposure support section 50c. Therefore, there is not enough space in front of the film exposure support section 50c to install various devices. That is, for example, it is difficult to install a focal plane shutter, a subject observation mirror for a single-lens reflex camera, etc. in front of the film exposure support section 50c. Therefore, there are significant restrictions on the types and types of cameras that can be used with the 110-inch film cartridge 50.

Further, the 110-inch film cartridge 50 itself, the spool chamber 50b, and the film exposure support portion 50c.
Because we need extra and.

Compared to the 135-inch Film Patrone 2, it was inevitably bulkier and had the problem of requiring a larger film cartridge storage chamber.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above problems by making it possible to use a film cartridge that is not bulky and consists only of a part for storing film, thereby saving extra space behind the lens. To provide a camera for a film cartridge that does not require a film cartridge, has no major restrictions, and has a high degree of freedom in design.

Means for Solving the Problems In order to achieve the above object, the present invention provides a camera using a film cartridge having a film feeding mechanism and a winding mechanism and only a portion for storing film, which After the film cartridge is housed in the camera, each mechanism is appropriately driven to perform film feeding and winding operations. That is, in a film cartridge camera in which a film cartridge is removably housed in a film cartridge storage chamber in a camera body, the film cartridge has a first engaging portion that can be engaged with a film winding drive member of the camera body. and a film winding shaft that rotates integrally with the film winding drive member to wind the film, and a second engaging portion that can be engaged with the film delivery drive member of the camera body, and a film feeding member that engages with the film when the film is in an unused state and rotates integrally with the film feeding drive member to feed out the film, and a film inlet/outlet, and the film winding member. The camera body includes a case that rotatably houses a shaft and the film feeding member, and houses the film wound around the film winding shaft in a light-shielded state. The film is configured to include a take-up drive section to drive, a delivery drive section to drive the film delivery drive member, and a film chamber to accommodate the delivered film.

The above configuration may also be configured to include film transport amount detection means for detecting the transport amount of the film by detecting the drive amount of the film delivery drive member.

The above configuration may also be configured to include a film cartridge entrance/exit for allowing the film cartridge to enter and exit in the axial direction.

In the above configuration, the film cartridge may have an asymmetric cross-sectional shape around the film winding shaft, and the film cartridge storage chamber may be configured such that the film cartridge can be loaded only in a predetermined direction. .

^Sakuri Hada In the above configuration, when the film cartridge is stored in the film cartridge storage chamber of the camera, the first engaging portion of the film cartridge is engaged with the film winding drive member of the camera body, and The second engaging portion is engaged with the film delivery drive member of the camera body. Since the film delivery member in the film cartridge is engaged with the unused film in the film cartridge, the film delivery drive member of the camera body is driven by the delivery drive unit in the film delivery operation. In this case, the film delivery member rotates via the second engaging portion, and the film is sent out from the film entrance/exit of the case to the film chamber side. Further, when the film winding drive member is driven by the winding drive unit in the film winding operation, the film winding shaft rotates integrally via the first engaging part, The film is wound onto a film winding shaft.

Effects of the Invention According to the above configuration, since the camera uses a film cartridge consisting only of a portion for storing film, the space for storing the film exposure support part and the space for storing the spool chamber in the 110-inch film cassette are reduced. It does not require any extra space behind the lens or in the film chamber, it does not impose any major restrictions on the design of the camera, and it does not impose any major constraints on the format or type of camera.

In addition, the above film cartridge consists only of the part that stores the film, and like the conventional 135-inch film cartridge, it does not require space behind the lens or in the film chamber, so the overall performance is better than the conventional 110-inch film cartridge. The space for storing the film cartridge can be reduced. In addition, since the above film cartridge does not get too high compared to the above conventional ilO type film cartridge, the size of the opening for inserting and removing the film cartridge of the camera using the above film cartridge has been changed to the above 110 type film cartridge. It can be made smaller than the size of the opening for inserting and removing the cartridge that is required for the camera used.

In addition, since the film cartridge is equipped with a film feeding member that feeds the film to the film chamber side, the user only needs to store the film cartridge in the camera body, and the second operation of feeding the film from the film cartridge is performed by the camera. The film delivery member is driven by the delivery drive section within the main body, and the film is automatically sent from the film cartridge to the film chamber side. Therefore, the user only needs to store the film cartridge in the camera body, and there is no need to adjust the film length such as pulling out the film from the film cartridge or to connect the film to the spool. There is no need to touch the film directly.

Therefore, the work of loading the film cartridge into the camera body becomes extremely simple.

For example, in a camera that can automatically engage the spool with the film by simply pulling the film out to a predetermined position on the film chamber side, it is possible to automatically engage the film with the spool by simply storing the film cartridge in the camera body. ,
The work of feeding the film to the film chamber side and the work of engaging the film with the spool can be performed automatically.

Embodiments of the present invention will be described in detail below with reference to FIGS. t-ti.

Before explaining the film cartridge camera according to this embodiment, the film cartridge housed in the camera will first be explained. FIG. 1 is a perspective view of an embodiment of a film cartridge 39 used in a film cartridge camera according to an embodiment of the present invention. FIG. 2 shows II of FIG. 1 of the film cartridge 39 shown in FIG.
There is a sectional view taken along the line -II.

As shown in FIG. 1.2, the film cartridge 39 includes a film winding shaft 22 around which an unused film 26 is wound, and a film that rotates by engaging with a perforation 26a of the film 26. A case that has a sprocket 23 as a delivery member and a film inlet/outlet 25, and stores the film take-up shaft 22 and the sprocket 23 close to each other so that they can rotate freely, and also stores the film 26 in a light-shielded state. It is roughly composed of 2.

A light shielding member 27 that is flexible and blocks light from the film entrance/exit 25 is provided inside the case 21 along the film entrance/exit 25 .

When the film 26 is sent out of the case 21 by the sprocket 23, the light shielding member 27 is pushed and bent to the outside of the film entrance/exit port 25 by the leading end of the film 26. When the film 26 is not in use, the perforation 26a at the tip of the film 26 is engaged with the engagement pawl of the sprocket 23, but the tip of the film 26 does not come out from the film opening 25. .

On the other hand, two large and small openings 21a and 21b are formed in the upper end surface of the case 2 in FIG. However, the second engaging portion 23a is exposed in the smaller opening 21b. The first engaging portion 22a is formed at the upper end of the film winding shaft 22, and can be engaged with a film winding drive member of the camera body, which will be described later. Further, the second engaging portion 23a is formed at the upper end of the sprocket 23, and can be engaged with a film delivery drive member of the camera body, which will be described later. Further, on the side of the case 21, film data 2 indicating the number of shootable frames and film sensitivity of the film 26 stored in the case 21 is provided.
1d is recorded. The number of frames that can be photographed is recorded as the total number of perforations 26a formed on the upper edge of the film 26.

Next, a camera that can use the film cartridge 39, includes a feeding operation of the film 26,
A camera whose winding operation, winding operation, etc. are controlled by a microcomputer described later will be described.

FIG. 3 shows a conceptual diagram of the camera in a state in which the film cartridge 39 is stored in the film cartridge storage chamber 40 and the leading end of the film 26 is fed out from the film entrance/exit port 25. In FIG. 3, 32 is an autofocus block, 33 is a finder block, 34 is a flash, 35 is a flashlight condenser 36 is a battery, 37 is a spool chamber as a film chamber, 41 is a spool, and 38 is an aperture (exposure opening). It is. In this embodiment, a perforated tongue 26a that engages with the engagement pawl of the sprocket 23 is formed only along the upper edge of the film 26 in FIG. Further, at the leading end of the film 26, the lower edge side of the film 26 in FIG. 3 is largely cut out. The film 26 is moved so that the upper edge side of the film 26, that is, the side on which the perforations 26a are formed, reaches the spool chamber 37 earlier than the lower edge side.
An inclined edge 26b is formed which is inclined with respect to the width direction.

FIG. 4.5 shows a camera that embodies the camera shown in FIG. A state in which the film cartridge 39 according to the example is about to be stored in the cartridge storage chamber 40 through the film cartridge entrance 43 opened on the bottom surface of the camera body 31 is shown. Further, FIG. 6 shows a state in which a film cartridge 39 is housed. A first fork 130 as a film winding drive member of the camera body 31 and a second fork 131 as a film feed drive member of the camera body 3f are provided at the upper end of the cartridge storage chamber 40, respectively. The first fork 130 projects downward and the second fork 131 engages with the first engaging portion 22a of the film cartridge 39, and the second fork 131 engages with the second engaging portion 23a of the film cartridge 39, respectively.

In addition, in FIG. 4, L indicates a lens.

FIG. 7 shows the first fork 130 and the second fork I3.
1 shows a take-up drive unit and a delivery drive unit that drive the drive unit 1, respectively. As shown in FIGS. 4 and 7, a motor 101 is provided in the spool 41, which operates when the film 26 is fed out, taken up, and taken up.
The motor 101 rotates a gear 103 and a gear 107 fixed to the camera body 31 via a reduction gear 102.

The gear 03 includes a carrier plate 105 having one end rotatably fixed to the central axis P, and a carrier plate 105 rotatably supporting the planetary gear 104 at the other end. It meshes with the planetary gear 104. The planetary gear 104 is arranged close to a gear 106 that rotates the spool 41. Therefore, when the gear 103 rotates counterclockwise in FIG.
The planetary gear 1 rotates counterclockwise in Fig. 7 with
04 meshes with the gear 106. Conversely, when the gear 103 rotates clockwise in FIG. 7, the carrier plate 105 and the planet gear 104 rotate clockwise in FIG. is separated from the gear 106.

The gear 107 also includes a carrier plate 108 that is rotatably fixed at one end to the center axis P and rotatably supports the planetary gear 109 at the other end. The planetary gear 109 and the planetary gear 109 mesh with each other. The planetary gear 109 is arranged close to the gear 1!0 that rotates the sprocket 23 and the gear 12 that rotates the film take-up shaft 22. Therefore, the above gear! When 07 rotates counterclockwise in Fig. 7,
The carrier plate 108 and the planetary gear 109 both rotate counterclockwise in FIG. 7 about the axis P, so that the planetary gear 109 meshes with the gear 110. Further, when the gear ring 07 rotates clockwise in FIG. 7, the carrier plate 108 and the planetary gear 109 rotate clockwise in FIG. 7 about the axis P, and the planetary gear 109 meshes with the gear 111.

Further, a sprocket rotation amount detection circuit RD is provided between the gear 110 and the sprocket 23, which generates a predetermined number of pulses in accordance with a predetermined rotation amount of the sprocket 23.

The first fork 130 and the gear 12 are connected to rotate together. The above first fork 13
A coil spring 132 is compressed between the gear 111 and the first fork 130 so that the first fork 130 can be retracted to the gear 21 side. Therefore, when the film cartridge 39 is stored in the cartridge storage chamber 40 of the camera body 31, as long as the first fork 130 is positioned so as to engage with the first engaging portion 22a of the film cartridge 39, it is possible to immediately If the rotational direction positions of both do not match, they will not engage and the first fork 1
30 is a coil spring! It is evacuated against the urging force of 32. In this case, when the positions in the rotational direction match due to relative rotation between the two, the first fork +30 projects due to the biasing force of the coil spring 132 and the two engage.

Also, the second fork 131 and the gear! What is lO?
They are connected to rotate together.

A coil spring 133 is compressed between the second fork 131 and the gear 110, so that the second fork 131 can be retracted to the gear 110 side. Therefore, when the film cartridge 39 is stored in the cartridge storage chamber 40, if the second fork 131 is in a state where it can engage with the second engaging portion 23a of the film cartridge 39, the two engage with each other. If the rotational direction positions of the two do not match, they cannot be engaged, so the second fork 131 retreats against the biasing force of the coil spring 133.

Thereafter, when the positions in the rotational direction match due to relative rotation between the two, the second fork 1 is
31 protrudes and the two engage.

The operation of the camera using the film cartridge 39 according to this embodiment is controlled by a microcomputer COM as shown in FIG. Microcomputer C
The following circuits and devices are connected to the OM. That is, a film data circuit FD for reading film data 21d recorded on the side surface of the film cartridge 39, and a sprocket rotation amount detection circuit for detecting the amount of rotation of the sprocket 23 and outputting a signal corresponding to the number of rotations. RD, photometry circuit ML that measures subject brightness
, an autofocus control circuit AP that measures the distance to the subject and drives the lens L, a display device DS that displays various states of the camera, a flash device PC that includes a xenon tube and emits flash light, and an aperture for shooting. and an exposure control device EC that drives the shutter, and a motor control circuit MD that controls the motor 101 in the spool 41.
1 power supply 36, a cartridge detection switch SQ that closes when the film cartridge 39 is stored in the cartridge storage chamber 40, and the cartridge storage chamber 40;
Lid detection switch Ss that closes when the lid LD is closed
, a switch SI which is closed by pressing the first stage of a two-stage shirt release button, and a switch S which is closed by pressing the second stage of the shirt release button which is further pressed from the first stage pressed state. In addition, the above switch Ss
may be closed when the fiLD having a locking mechanism is locked.

The following describes the initial setting operation, initial winding operation, photographing operation, film winding operation, and film winding operation of the camera controlled by the microcomputer COM.

(Initial Setting Operation) When the film cartridge 39 is stored in the cartridge storage chamber 40, the power source 36 is turned on, and an initial setting operation as shown in FIG. 9 is performed. That is, when the power source 36 is turned on, step 5IOI
In step S!, each input/output terminal and memory circuit are set to the initial state, and then in step S! In step 02, the film data circuit FD reads the film sensitivity, the number of frames that can be photographed, etc. from the film data 21d of the film cartridge 39, and then in step 5103, the interruption of other operations is permitted, and then in step 5104, the above-mentioned initial Finish the setting operation. Step 810 above! In , the final frame flag, which will be described later, is set to the initial state.

(Initial winding operation) When the film cartridge 39 is stored in the cartridge storage chamber 40, an initial winding operation as shown in FIG. 10 is performed following the initial setting operation.

That is, the film cartridge 39 is stored in the cartridge storage chamber 40 and the cartridge storage chamber 40 is
When the lid LD is closed, both the cartridge detection switch SQ and the lid detection switch Ss are closed, so the OR circuit ORI connected to the switches Sa and Ss outputs a low signal as shown in FIG. do.

Then, the circuit O6 connected to the OR circuit ORI
A high signal is output for a predetermined period of time. As a result, the circuit O
A low signal is input from the inverter TNV connected to the microcomputer 8 to the interrupt terminal lNTl of the microcomputer COM, and interrupts of other operations are prohibited in step 8201 as shown in FIG. Next, step 52
After starting normal rotation of the motor 101 at 02,
A timer is set in step 5203.

When the motor 101 is rotated forward in step 5202, the rotation is transmitted to the gear 103 via the reduction gear 102, and the gear 103 rotates counterclockwise in FIG. 7 about its axis P. . As a result, the planetary gear 104 of the gear 103 rotates clockwise in FIG. 7 about its axis P, and the carrier plate 104 rotates clockwise in FIG.
5 rotates counterclockwise in FIG. 7 about the central axis P1 of the gear 103, and the planetary gear 104 in FIG. 7 comes to mesh with the gear 106 disposed adjacently above. Accordingly, the gear 106 rotates counterclockwise in FIG. 7, and the rotation is transmitted to the fourth spool, causing the spool 41 to rotate counterclockwise in FIG.

Similarly, the rotation of the motor 101 is also transmitted to the gear 107 via the reduction gear 102.
rotates counterclockwise in FIG. 7 about its axis P. As a result, the planetary gear 109 of the gear 107 has its axis P
4 in the clockwise direction in FIG. 7, and the carrier plate ! 08 rotates counterclockwise around the central axis P of the gear 107, and the planetary gear ■ in FIG.
09 comes to mesh with the gear 110 disposed adjacently above. Therefore, the gear 110 rotates counterclockwise in FIG. 7, and the rotation is transmitted to the sprocket 23, which in turn rotates counterclockwise in FIG. Then, the perforation 2 at the leading end of the unused film 26 in the film cartridge 39
6a is engaged with the engagement pawl of the sprocket 23,
As shown in FIG. 3, the film 26 is fed out from the film opening 25 of the case 21 of the film cartridge 39. After that, the leading end of the film 26 is connected to the camera body 3! When the film 26 is fed along a film rail or the like appropriately formed in the spool chamber 37 and reaches the spool chamber 37, the perforations 26a at the leading end of the film 26 touch the rotating spool 4! As a result, the leading end of the film 26 is wound onto the spool 41. Note that, if necessary, a mechanism for pressing the leading end of the film against the spool may be provided in the spool chamber.

On the other hand, when the sprocket 23 starts to rotate due to the rotational drive of the motor 101, the sprocket rotation amount detection circuit RD outputs a number of pulses corresponding to the rotation amount of the sprocket 23, and in step 5204, the microcomputer COM The above number of pulses is counted.

Next, in step 5205, the above step 520
It is determined whether the timer set in step 3 has ended or not, and if it is determined that it has not ended, in step 5208, the timer that is set in step 5204 is determined to have reached a predetermined number A. Determine whether or not.

If it is determined in step 5208 that the number of pulses has reached the predetermined number A, that is, if it is determined that the film 26 has been sent out by a predetermined amount from the entrance/exit 25 of the case 21, step 5209 is performed. After stopping the motor 101, step 52
At step 10, the display device DS displays that the film cartridge 39 has been properly stored in the cartridge storage chamber 40, the film 26 has been normally wound, and the initial winding operation has been performed. Next, step 5211
In step 5212, the initial hoisting operation is completed.

If it is determined in step 5208 that the number of pulses has not reached the predetermined number A, the process returns to step 5204.

Further, if it is determined in step 5205 that the timer has ended, that is, some abnormality has occurred and the film 26 is removed from the case 2 within a predetermined time.
If it is determined that the predetermined amount has not been fed out from the film entrance/exit port 25 of No. 1, the motor 101 is stopped in step 9206, and then an abnormal state is displayed on the display device DS in step 5207, and then the process is performed in step 5211. Proceed to.

(Photographing operation, film winding operation, film winding operation) The photographing operation, film winding operation, and film winding operation are performed as shown in FIGS. 11A and 11B. When the switch S is closed by pressing the first stage of the shirt release button, the interrupt terminal INT is connected as shown in FIG.
2, an interrupt signal is manually input. Then step 53
At step 01, interruption of other operations is prohibited, then at step 5302 the subject brightness is measured, and then at step 5303 the subject distance is measured. Next, in step 5304, the above step 5
Based on the measurement results at 302 and 5303 and the film sensitivity obtained in the above-mentioned initial setting operation, it is determined whether or not the flash 34 is to be emitted and an exposure control value is calculated.

Next, in step 5305, it is determined whether the switch S is closed, that is, it is determined whether the shirt release button has been pressed down to the second stage, and the shirt release button is pressed down to the second stage. If it is determined that it has not been pressed, it is determined in step 5306 whether the switch S remains closed, that is, whether the shirt release button remains pressed to the first step. do.

If it is determined in step 8306 that the shirt release button remains pressed down to the first stage, the process returns to step 5302.

That is, in this case, it is determined that the camera is in a standby state ready for photographing, so steps 5302 to 5305 and 5306 are performed until it is determined in step 5305 that the shirt release button has been pressed to the second level. repeat.

Further, if it is determined in step 8306 that the shirt release button has not been pressed down to the first stage, it is determined that the operation has been canceled, and step 530
After allowing the interruption of other operations in step 7, step 53
At 34, the photographing operation is stopped.

If it is determined in step 5305 that the shirt release button has been pressed to the second level, in step 5308 the lens L is driven to a position corresponding to the subject distance via the autofocus control circuit AF, Next, in step 5309, it is determined whether or not the driving of the lens L has been completed. If it is determined that the driving of the lens L has not been completed, the process waits until the driving of the lens L is completed.

If it is determined in step 5309 that the driving of the lens L is completed, in step 5310 the shutter device (not shown) is caused to perform an exposure operation (photographing operation) via the exposure control device EC, and as necessary. In response, the flash device FC is operated to cause the flash 34 to emit light. After the exposure operation, step 5311
At this point, the final frame flag is checked to determine whether or not the film 26 is the final frame.

If it is determined in step 5311 that the frame is not the last frame of the film 26, normal rotation of the motor 101 is started in step 5321, and then a timer is set in step 5322. When the motor 101 is rotated forward in step 5321, as described above, the sprocket 23 and the spool 4
1 rotates counterclockwise in FIG. 7, the film 26 is sent out from the film opening 25 of the case 21 of the film cartridge 39 and is wound onto the spool 41. When the sprocket 23 starts to rotate, the sprocket rotation amount detection circuit RD outputs a number of pulses corresponding to the rotation amount of the sprocket 23, and the number of pulses is counted in step 5323.

Next, in step 5324, the above step 5322
Determine whether the timer set in has ended or not,
If it is determined that the process has not finished, step 5327
In step 5323, it is determined whether the number of pulses counted in step 5323 has reached a predetermined number B corresponding to the winding amount for one frame of the film 26.

If it is determined in step 5327 that the number of pulses has not reached the predetermined number B, the process returns to step 5323.

If it is determined in step 5327 that the number of pulses has reached the predetermined number B, that is, if it is determined that the film 26 has been wound onto the spool 41 by one frame, then in step 6328 Motor 101 is stopped.

Next, in step 5329, it is determined whether or not one frame remains among all the frames of the film 26 other than the frames that have already been photographed. That is, it is determined whether or not it is the final frame based on the total number of pulses from the time of loading the film, and if it is determined that it is not the final frame, winding of the film 26 for one frame is completed in step 5331. The information, number of photographed frames, etc. are displayed on the display device DS, and then, in step 5332, interruption of other operations is permitted, and then, in step 5333, the film winding operation is ended.

Also, in step 5329, the film 26
If it is determined that the piece has become the final piece, step 5
After setting the final piece flag in step S330 to indicate that the remaining pieces are the final pieces, the process advances to step S331.

On the other hand, in the step 5324, the step 5
If it is determined in step 322 that the set timer has ended, that is, if it is determined that some abnormality has occurred and the film 26 has not been wound by one frame, the motor 101 is stopped in step 5325. , then in step 8326 the display device D
After displaying a warning on S, the hoisting operation is terminated in step 5333.

Incidentally, after a warning is displayed on the display device DS in step 8326, a winding operation to be described later may be performed.

Further, in the step 5311, if it is determined that the final frame flag is set to indicate that the remaining frames are the final frames and that the photographing of the final frame of the film 26 has been completed, the film is unwound. In order to start the operation, reverse rotation of the motor lO1 is started in step 8312, and then a timer is set in step 5313. When the motor lot is reversed in step 5312, its rotation is transmitted to the gear 103 via the reduction gear +02, and the gear 103 is connected to its axis P,
It rotates clockwise in FIG. 7 around . the result,
The planetary gear 104 rotates counterclockwise in FIG. 7 about its axis P, and the carrier plate 105 rotates clockwise about the central axis P+ of the gear 103. away from the gear 106. Similarly, the rotation of the motor 101 is also transmitted to the gear 107 via the reduction gear 102.
7 rotates clockwise in FIG. 7 about its axis P. As a result, the planetary gear 09 rotates counterclockwise in FIG. 7 around its axis P4, and the carrier plate 108 rotates clockwise around the central axis P of the gear 107. The planetary gear 109 is the gear 1
It meshes with a gear 111 which is disposed adjacent to the lower part of FIG. 7 apart from the gear 10. Therefore, gear 111
rotates clockwise in FIG. 7, and this rotation is transmitted to the film winding shaft 22, which in turn rotates clockwise in FIG. Then, the film 26 is wound onto the film winding shaft 22. Furthermore, since the engaging pawl of the sprocket 23 engages with the perforation 26a of the film 26,
6 is wound up on the film winding shaft 22, it freely rotates clockwise in FIG.

Then, the sprocket rotation amount detection circuit RD outputs a number of pulses corresponding to the rotation amount of the sprocket 23, and the number of pulses is counted in step 5314.

Next, in step 5318, the above step 531
It is determined whether or not the timer set in step 3 has ended. If it is determined that the timer has not ended, in step 5315, the number of pulses counted in step 5314 is changed by normal rotation of the motor 101. It is determined whether a predetermined number C corresponding to the amount by which the film 26 has been wound up on the spool 41 has been reached.

In step 5315, the number of pulses is set to a predetermined number C.
If it is determined that the value has not been reached, step 531
Return to 4.

If it is determined in step 5315 that the number of pulses has reached the predetermined number C, that is, the film 26
If it is determined that all of the film 26 has been rewound into the film cartridge 39, the motor 101 is stopped in step 5316, and then, in step 5317, the display device DS indicates that the winding of the film 26 has been completed. After displaying, in step 5333, the film winding operation is ended.

Note that after it is determined in step 5315 that the number of pulses has reached the predetermined number C, the motor 1
01 for a predetermined period of time, the engagement between the film 26 and the engaging pawl of the sprocket 23 is released, and the film 26 up to the leading end is wound onto the film winding shaft 22. good.

Also, in step 5318, step 5
If it is determined that the timer set in step 313 has ended, that is, if it is determined that due to some abnormality, the film 26 is not completely wound onto the film winding shaft 22 even after a predetermined period of time has elapsed. In step 5319, the motor 101 is stopped, and then, in step 5320, a warning is displayed on the display device DS, and then in step 5333, the winding operation is ended.

According to the above configuration, since the camera uses the film cartridge 39 which consists only of the part that stores the film, the space for storing the film exposure support part and the space for storing the spool chamber in the IIO type film cartridge are unnecessary. , the extra space can be removed from the lens L.
It does not require the rear of the camera or the spool chamber, does not impose any major restrictions on camera design, and does not impose any major restrictions on the format or type of camera.

In addition, the film cartridge 39 consists only of the part that stores the film, and does not require the same amount of space behind the lens or in the spool chamber as the conventional 135-inch film cartridge. The film cartridge storage chamber 40 can be made smaller. Furthermore, since the film cartridge 39 does not become too bulky compared to the conventional 110-inch film cartridge, the size of the opening 43 for inserting and removing the film cartridge of the camera using the film cartridge 39 may be adjusted to fit the 110-inch film cartridge. The size of the opening for inserting and removing the cartridge can be made smaller than that required for a camera using a cartridge.

Further, the film cartridge 39 is connected to the film 2.
6 to the spool chamber side, the user only needs to store the film cartridge 39 inside the camera body 31, and the user only has to store the film cartridge 39 into the camera body 31
In the film feeding operation from 9, the sprocket 23 is driven by the feeding drive section in the camera body, and the film 26 is automatically fed from the film cartridge 39 to the spool chamber and engaged with the spool 41. be done. Therefore, the user must
9 in the camera body, and there is no need to perform any film length adjustment work such as pulling out the film 26 from the film cartridge 39 or to connect the film 26 to the spool 41. Therefore,
The loading operation of the film cartridge 39 into the camera body 31 becomes extremely simple.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of a film cartridge used in a film cartridge camera according to the present invention, Fig. 2 is a cross-sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a cross-sectional view of the film cartridge described above. A schematic explanatory view of the camera showing a state in which the leading end of the film is fed out from the film entrance/exit of the film cartridge case after the film is stored in the film cartridge storage chamber of the camera body of the camera;
Figures 4 and 5 are front and bottom views of the camera showing the film cartridge being stored in the film cartridge storage chamber of the camera body, respectively, and Figure 6 is the camera body with the film cartridge shown in Figure 4. 7 is an explanatory diagram of the film winding shaft, sprocket, and spool drive unit of the camera shown in FIG. 4, and FIG. FIG. 9 is a flowchart showing the initial setting operation of the camera shown in FIG. 4; FIG. 10 is a flowchart showing the initial film winding operation of the camera shown in FIG. 4. Flowchart, 1st
Figures 1A and 11B are flowcharts showing the photographing operation, film winding operation, and film winding operation of the camera shown in Figure 4, and Figure 12 shows a conventional 135-inch film cartridge being stored in the cartridge storage chamber of the camera body. FIG. 13 is an explanatory diagram showing a state in which the camera user is attempting to connect the leading end of the film to the spool after storing the 135-inch film cartridge in the cartridge storage chamber in FIG. 12; FIG. 14 is an explanatory diagram showing a state in which a conventional 110-inch film cartridge is being stored in the cartridge storage chamber of the camera body. 21... Case, 22... Film winding shaft, 22a
. . . first engaging portion, 23 . . . film delivery member, 23
a...Second engaging portion, 25...Film entrance/exit, 26...
...Film, 26a...Perforation, 31
...Camera body, 37...Spool chamber, 39...
Film cartridge, 40...Film cartridge storage chamber, 43...Film cartridge entrance/exit, 1
30...Film winding drive member, 131...Film delivery drive member, RD...Film transfer amount detection means. Patent applicant Minolta Camera Co., Ltd. Agent Patent attorney Aoyama Ao and two others Figure III Figure 3 Figure 2 z District 4 Figure 6 Figure 8 Figure 5 Figure 7 I Figure 9 Figure 10 Figure 11A ]

Claims (4)

[Claims] (1) In a film cartridge camera in which a film cartridge (39) is removably housed in a film cartridge storage chamber (40) in the camera body (31), the film cartridge (39) is attached to the camera body (31). It has a first engaging part (22a) that can be engaged with the film winding drive member (130), and rotates integrally with the film winding drive member (130) to rotate the film (2).
a film winding shaft (22) for winding the film (6); 26) in an unused state, and the film delivery drive member (131)
a film feeding member (23) that rotates integrally with the film (26) and feeds out the film (26); and a film inlet/outlet (25); The camera body (31) includes a case (21) that rotatably accommodates the film (26) wound around the film winding shaft (22) in a light-shielded state; A take-up drive unit that drives the take-up drive member (130), a delivery drive unit that drives the film delivery drive member (131), and a film chamber (37) that accommodates the delivered film (26).
) A film cartridge camera characterized by comprising: (2) The invention according to claim 1, further comprising a film transport amount detection means (RD) for detecting the transport amount of the film (26) by detecting the drive amount of the film delivery drive member (131). Camera for film cartridges. (3) Film cartridge inlet/outlet (43) for moving the film cartridge (39) in and out in the axial direction
A film cartridge camera according to claim 1 or 2. (4) The film cartridge (39) has an asymmetric cross-sectional shape around the film take-up shaft (22), and the film cartridge storage chamber (40)
A film cartridge camera according to any one of claims 1 to 3, wherein the film cartridge (39) can be loaded only in a predetermined direction.