JPH07287282A - Camera - Google Patents

Abstract

PURPOSE:To accurately set an index for the completion of photographing at the time of rewinding even if a bar code recognition device is not provided by detecting the rotational angle of an R-fork and controlling the completion of rewinding by using the output thereof. CONSTITUTION:A film 3 housed in a cartridge 4 is arranged on the rear side of a photographic lens 1 and a shutter 2 and a disk 5 integrally formed with a cartridge shaft is provided in the cartridge 4. Driving force from a motor 12 is transmitted to a film winding spool 6 by a gear train 7 and a planetary gear 11. Besides the force is transmitted to the R-fork 8 engaged with the shaft of the cartridge 4 through a gear train 9 and the planetary gear 11. Moreover, an R-fork position detecting plate 10 is used for detecting the absolute position of the R-fork 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera using a patrone which determines whether or not a film has been photographed depending on which direction of a patrone axis having a notch faces.

[0002]

2. Description of the Related Art In recent years, a patrone provided with a confirmation means for confirming the use state of a film has been developed, and a camera using the patrone has been developed. For example, in JP-A-5-508943, by recognizing the bar code of the disk provided on the cartridge during the rewinding of the film and stopping the disk at a predetermined angle at the end of the rewinding. A technique is described in which an index is provided to allow the user to recognize that the film has been photographed.
This makes it possible to distinguish between unused film and photographed film.

[0003]

By the way, in the case where the above-mentioned index is provided, the barcode differs depending on the cartridge. Therefore, a barcode recognition device is required to recognize different barcodes.

However, most low cost cameras do not have a bar code recognition device. Even if the camera has a barcode recognition device, if the motor for feeding the film has uneven rotation, the barcode may not be recognized correctly and the disc may stop at the wrong position. There is. Then, the index will shift,
There is a problem that it is difficult to know whether or not the film cartridge used is already photographed.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a camera capable of correctly recognizing whether or not it is a photographed patrone without a bar code recognizing device.

[0006]

That is, the present invention relates to a camera using a patrone whose use state can be confirmed by the relative position of the patrone shaft and the exterior of the patrone, and the patrone according to the use state of the patrone. The rotation shaft means that is uniquely and rotatably engaged with the cartridge shaft of, the driving means that drives this rotation shaft means, and the rotation shaft means are coupled so that the rotation amount uniquely corresponds to them. The revolving shaft position detecting means for detecting the position of the revolving shaft means, a rewinding instruction in the state where the unexposed image frame remains, or a rewinding instruction signal after completion of the exposure is issued to complete the rewinding. And a control means for controlling the drive means so that the position of the Patrone shaft will be the position corresponding to the output signal based on the output of the rotary shaft position detecting means. To.

Further, the present invention relates to a camera using a patrone for confirming a use state, wherein the patrone forms a part of the confirming means according to the use state of the patrone. Rotating shaft means that uniquely and rotatably engages with the cartridge shaft, rotating shaft position detecting means that detects the stop position or rotating position of the rotating shaft means, and a state where unexposed image frames remain In the meantime, there is provided an intermediate rewind instruction means for instructing rewind, and a rewind signal output means for determining the presence / absence of a photographable frame and outputting a rewind signal when it is determined that there is no imageable frame. When an output signal is output from the instruction means or the rewind signal output means, the position of the patrone shaft forming a part of the confirmation means is based on the output of the rotary shaft position detection means, and the output signal So that the position corresponding to, and returning the winding of the film.

[0008]

According to the present invention, in a camera using a patrone whose use state can be confirmed by the relative position of the patrone shaft and the exterior of the patrone, the rotating shaft means is provided with the patrone according to the use state of the patrone. It is uniquely and rotatably engaged with the Patrone shaft. The rotating shaft means is driven by the driving means, and the position of the rotating shaft means is detected by the rotating shaft position detecting means which is coupled to the rotating shaft means so that the rotation amounts uniquely correspond to each other.
Then, based on the output of the rotating shaft position detecting means, after the rewinding instruction in the state where the unexposed image frames remain, or the rewinding instruction signal after the exposure is completed and the rewinding is completed, The drive means is controlled by the control means so that the position of the Patrone shaft corresponds to the position corresponding to the output signal.

According to the present invention, in a camera using a patrone provided with a confirmation means for confirming the state of use, depending on the state of use of the patrone,
The rotating shaft means is uniquely and rotatably engaged with the cartridge shaft of the cartridge forming a part of the confirmation means. The stop position or the rotating state position of the rotating shaft means is detected by the rotating shaft position detecting means. Then, in the state where the unexposed photographing frame remains, the midway rewinding instructing means instructs the rewinding, and it is judged whether or not there is a photographable frame. When it is judged that there is no photographable frame, the rewinding signal output means rewinds. The signal is output. Then, when an output signal is output from the midway rewind instruction means or the rewind signal output means, based on the output of the rotary shaft position detection means, the patrone shaft of the patrone shaft forming a part of the confirmation means. The film is rewound so that the position corresponds to the output signal.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the camera of the present invention. In the figure, the taking lens 1
The shutter 2 and the film 3 are arranged behind the. The film 3 is stored in the cartridge 4. The cartridge 4 is provided with a disk 5 integrally formed with the shaft of the cartridge.

2A to 2D show the cartridge 4 described above.
3 shows the details of the film 3. Film 3
A magnetic recording layer 3b is provided outside the photographing screen 3a, and one perforation 3c is provided for each frame of the photographing screen 3a. The cartridge shaft 4a is formed so as to extend through the back surface, and a cutout portion 4c is provided at one location.

Then, "A" on the Patrone 4 side,
There are four indicators provided with "B", "C", and "D". For example, this index indicates that "A" is a non-photographed film, "B" is a film photographed halfway, "C" is a photographed film, and "D" is a developed film. That is, when the film 3 is loaded in the camera, the film state can be recognized by detecting the angle of the cartridge shaft 4a. In addition, by stopping the patrone shaft at the position "C" at the end of rewinding after photographing, the user can be informed that the film has already been photographed.

A bar code _5'is printed on the upper surface of the disk 5 integrally formed with the cartridge shaft 4a, and the ISO sensitivity of the film, the maximum number of frames E _XPMAX, etc. are displayed here.

Returning to FIG. 1, the spool 6 is for winding the film 3, and the driving force from a motor 12 described later is transmitted by the gear train 7. The R fork 8 is the R fork engaging portion 4b shown in FIG. 2C, and is used to pull out the leading end of the film 3 at the time of idling and to rewind the film 3. R fork 8
When the cartridge and the cartridge shaft 4a are engaged, the relationship is uniquely determined. Further, the gear train 9 is provided for driving the R fork 8, and the R fork position detection plate 1
0 is for detecting the absolute position of the R fork 8.

A planetary gear 11 meshes with the gear trains 7 and 9, and the driving force of the motor 12 depends on which of the gear trains 7 and 9 the planetary gear 11 meshes with. It is switched whether it is transmitted to the side or the R fork 8 side. The motor 12 is controlled by a motor control circuit 13 to brake the motor in the forward and reverse directions. The sequence circuit 14 is for controlling the film feeding sequence including the motor control circuit 13. Further, the motor 12 is
The motor switching circuit 15 can be arbitrarily switched by the force of a plunger or the like.

A bar code P is provided in the vicinity of the cartridge 4.
An R (photoreflector) 16 is provided so that the bar code of the disk 5 can be read, and the output current thereof is digitized by the signal processing circuit 17.
Further, the R fork PR18 is the R fork position detection plate 1
It is provided above 0 and generates different analog output current depending on the position of the detection plate 10.

The output of the R fork PR18 is A / D converted by the signal processing circuit 19 and a pulse is generated each time the analog amount changes by a predetermined amount. Then, the signal processing circuit 17
Is supplied to the detection circuit 20 together with the output of. The detection circuit 20 stores the output of the signal processing circuit 17 for each pulse generated from the signal processing circuit 19 so that the bar code can be correctly recognized regardless of the uneven rotation of the motor 12. ing.

An output current is also supplied from the signal processing circuit 19 to the R fork position recognition circuit 21. In the R fork position recognition circuit 21, from the result of A / D conversion of the output current of the R fork PR18, the R fork 8, that is, the cutout portion 4c of the Patrone shaft 4a existing at the same position, is The positions of the indices “A”, “B”, “C”, and “D” shown in FIG. 2B are recognized.

A perforation detection PR is provided in the vicinity of the film 3 so that the perforation 3c of the film 3 is detected and the screen interval is set correctly. This perforation detection PR2
After the output of 2 is digitized by the signal processing circuit 23,
It is supplied to the sequence circuit 14.

The output of the signal processing circuit 19 is also supplied to the magnetic recording circuit 24. The magnetic recording circuit 24 is for recording necessary information on the magnetic recording layer 3b while the film 3 is being fed. The magnetic reading circuit 25 is, on the contrary, a circuit for reading the contents of the magnetic recording layer 3b.

The output of the photometric circuit 26 for measuring the subject brightness is output together with the output of the sequence circuit 14 to the exposure calculation circuit 27.
Is supplied to. In this exposure calculation circuit 27, the shutter speed is calculated from the brightness and the film sensitivity. The shutter drive circuit 28 drives the shutter 2 according to the output of the exposure calculation circuit 27.

A control circuit 29 for controlling the entire camera is connected with a midway rewind input circuit 30, a release input circuit 31, a rear lid opening / closing signal input circuit 32, and a display circuit 33 composed of an LCD or the like. There is.

Next, the R fork position detecting plate 10 described above will be explained with reference to FIG. As shown in FIG. 3A, the R fork 8 and the R fork position detection plate 10 are provided.
Correspond to each other, and when the R fork 8 makes one rotation, the detection plate 10 also makes one rotation. The R fork PR18 is installed above the detection plate 10. Detection plate 10
As shown in FIG. 3 (b), the vertical thickness is different depending on the rotation angle of the gear. That is, since the distance from the R fork PR18 varies depending on the rotation of the disc, the output current becomes large when the distance is small and becomes small when the distance is large, as shown in FIG. By recognizing this output current, the detection plate 1
The absolute position of 0, that is, the absolute position of the R fork 8, and the absolute position of the Patrone shaft 4b engaging with it are determined.

FIGS. 4A to 4F are time charts when the film is wound. When the R fork 8 rotates a little less than one rotation while winding one film frame,
Its output changes in conjunction with it. R fork PR1
Each time the analog output of 8 changes by a predetermined amount, the signal processing circuit 1
A pulse is generated from 9. Further, in association with this, the information of “photographed” and “date” is magnetically recorded on the film 3. Of course, the relationship between the rotation amount of the R fork 8 and the movement amount of the film 3 changes depending on the thickness of the film 3 and the current number of frames, but can be corrected to some extent from the maximum number of frames E _XPMAX of the film 3 and the current number of frames. It is possible.

When the film 3 is slack in the cartridge 4, the R fork 8 may not rotate even if the film 3 is fed. In this case, it is effective to reverse the R fork 8 once to remove the slack before the idle feeding.

Next, the operation of the first embodiment will be described with reference to the flow charts of FIGS. When the rear lid of the camera (not shown) is opened (step S1), the planetary gear 11 is switched to the spool 6 side to set the R fork 8 in a free state (step S2). This is because the cartridge 4 is loaded into the camera (step S3), and the R fork 8 is driven to the position of the cartridge shaft 4a. After this, when the rear lid is closed (step S4), 3
PR, R fork PR18, barcode P
R16, perforation detection PR (film PR) 22
Is turned on (step S5).

First, the output of the R fork PR18 is read (step S6), and the position of the R fork is recognized (any one of the indexes "A", "B", "C", "D").
(Step S7). Thereafter, the loaded cartridge 4 has been developed (step S8) and photographed (step S8).
9), determination during shooting (step S10) is performed. Here, in the case of film that has been taken, developed, or in the middle of shooting,
A warning is displayed on the LCD display circuit 33 to that effect, and the operation is stopped (steps S11 to S16).

FIG. 7 shows an example of these warning displays. In the above steps S8 to S16, if the film is an unused film or a film being photographed, the planet gear 11 is switched to the R fork 8 side (step S1).
7). Then, when the motor 12 is normally rotated (step S
18), the leading edge of the film 3 automatically comes out of the cartridge 4.

Next, n is set to 1 in order to count the pulses generated from the signal processing circuit 19 (step S1).
9). The signal processing circuit 1 is interlocked with the rotation of the R fork 8.
Since a pulse is generated from 9 (step S20), the output of the barcode PR16 is read each time and "1" or "0" is stored (step S21). Disk 5 is 1
Since the value of a is set so that n becomes a or more when rotated (steps S22 to S26), the bar code reading ends there (step S27). in this way,
Even if the motor 12 has uneven rotation, the rotation is detected by the rotation of the R fork 8 in order to correctly recognize the barcode.

Next, by recognizing the bar code, the film sensitivity is set in the exposure calculation circuit 27 and the maximum frame number E _XPMAX is set in the sequence circuit 14 (step S28). Then, the pulse of the signal processing circuit 19 is continuously counted (steps S29 to S31). Here, since the tip of the film 3 reaches the spool 6 when n is equal to or larger than a, the planetary gear 11 is switched to the spool 6 side to drive the spool (step S3).
2).

After this, the perforations 3c of the film 3 are counted. Starting from i = -2 and ending with i = 1, the blank feed is ended (steps S33 to S36),
The motor is stopped (step S37). If the film is not being filmed (step S38), the frame number display is set to 1 (step S39). In this way, when release permission is given (step S40), this sequence is ended.

If it is determined in step S38 that the film is in the middle of shooting, the planetary gear 11 is switched to the spool 6 side, so the motor 12 is normally rotated (step S41) and the number of frames is displayed ( (Step S42) The magnetic reading circuit 25 is turned on (step S43).

Here, since a pulse is generated from the signal processing circuit 16 in accordance with the perforation 3c, the pulse is counted and the winding is continued until there is no photographed signal on the magnetic recording layer 3b while displaying the number of frames. (Steps S44 to S48). Then, the motor is stopped when the photographed signal disappears, the number of frames at that time is displayed, and photographing is permitted (steps S49 to S54).

FIG. 8 is a flow chart for explaining a normal photographing operation. First, by turning on a first release switch (1RSW) (not shown), distance measurement and photometry are performed (steps S61 to S63), and shutter time calculation is performed (step S64). After that, when the second release switch (2RSW) is turned on (step S65), photographing is performed and film feeding starts.

That is, the lens is extended (step S6).
6) After performing shutter control (step S67) and lens reset (step S68), the current frame number i is compared with the maximum frame number E _XPMAX (step S69). here,
If the current number of pieces i does not exceed the maximum number of pieces E _XPMAX ,
R fork PR18 and perforation detection PR2
2 is turned on (step S70), and the motor 12 is normally rotated (step S71).

Next, the magnetic recording information and signal processing circuit 1
A counter for counting the pulses generated from 9 is initialized (step S73). As shown in FIG. 4, the control is performed as the analog output of the R fork PR18 changes, and the recording is performed in conjunction with the pulse of the signal processing circuit 19. However, the rotation amount of the R fork 8 is the maximum frame number E _XPMAX . Since the film feed amount changes depending on the current number of frames i, recording is performed in conjunction with the variable K / (E _XPMAX -i) here (where K is a constant) (step S74 ~
S76).

Then, in accordance with the value of j, "photographed information" and "photographed date information" are written in the magnetic recording layer 3b (steps S77 to S84). Furthermore,
The motor 12 is stopped according to the detection result of the perforation detection PR22 (steps S85, S86), and the number of frames at that time is displayed (steps S87, S88).

FIG. 9 is a flow chart for explaining the rewinding operation in the above-mentioned first embodiment. In step S69 of FIG. 8, the maximum number E of frames is changed from the current number i of frames.
_If it matches _XPMAX , or if the forced rewind (RW) button is pressed (step S91) and the midway rewind flag is set to 1 (step S92), the planetary gear 11 is switched to the R fork 8 side ( In step S93), the motor 12 is rotated in the reverse direction (step S94). Then, the counter is decremented in conjunction with the output of the perforation detection PR22 (steps S95 to S98), and when the counter reaches 0, the timer is started (step S99).

When the output of the perforation detection PR22 does not change and a predetermined time has elapsed (steps S100 and S101), it is determined that the film 3 has been wound into the cartridge 4. Then, the output of the R fork PR18 is read (step S102), and the position of the R fork 8 is recognized (step S103). Next, the stop position control of the R fork 8 is started. While the output of the R fork 8 is being monitored, at the position where the shooting has been completed (step S10
4 to S106) The motor 12 is stopped (step S10
7) The planetary gear 11 is switched to the spool 6 side (step S108). After that, the display circuit 33 indicates that the rewinding is completed (step S109), and the process is completed.

The case of rewinding on the way is similar to the above-mentioned example. When the relationship between the Patrone shaft 4b and the R fork 8 is not determined one to one, that is, when the R fork 8 is fitted at two positions (every 180 °) with respect to the position of one Patrone shaft 4b. Any of them can be recognized in relation to the barcode information during the blank feeding.

FIG. 10 shows a second embodiment of the present invention, in which R
It shows another configuration example of the fork position detection plate.
As shown in FIG. 10A, the R fork position detection plate 5a is composed of a circular plate 5a having different reflectances. Since the disc 5a has a different reflectance depending on the place, the disc shown in FIG.
As shown in (b), the output current changes in association with the rotation of the disc 5a.

In the second embodiment, since the reflectance and the output current have a substantially linear relationship, there is an advantage that the output can be stably obtained. FIG. 11 is a third embodiment of the present invention and shows still another configuration example of the R fork position detection plate.

In the third embodiment, a printing resistor is provided on the disc 5b. Then, the amount of rotation is changed to a resistance value by sliding the two patterns on the reference pattern and the measurement pattern.

According to the third embodiment, there is an advantage that the subsequent signal processing becomes simple. FIG. 12 shows a fourth embodiment of the present invention and is a timing chart for explaining the operation.

In the fourth embodiment, the magnetic recording timing signal is obtained from the bar code signal instead of the R fork signal. According to the fourth embodiment, there is an advantage that the timing signal can be obtained even when the R fork is not detected.

According to the above embodiment of the present invention, the following constitution can be obtained. (1) In a camera using a patrone whose use state can be confirmed by the relative position of the patrone shaft and the exterior of the patrone, the patrone shaft of the patrone can be uniquely and freely rotated according to the use state of the patrone. A rotating shaft which engages with the rotating shaft means, a driving means which drives the rotating shaft means, and a rotating shaft which is coupled so as to uniquely correspond in rotation amount to the rotating shaft means, and which detects the position of the rotating shaft means. After the position detection means and the rewinding instruction in the state where the unexposed image frame remains, or the rewinding instruction signal after the completion of the exposure to complete the rewinding, the output of the rotating shaft position detecting means is output. And a control means for controlling the driving means so that the position of the Patrone axis corresponds to the output signal.

(2) In a camera using a patrone provided with confirmation means for confirming the use state, the patrone of the patrone forming a part of the confirmation means according to the use state of the patrone. In a state in which a rotation shaft unit that uniquely and rotatably engages with the shaft, a rotation shaft position detection unit that detects a stop position or a rotation state position of the rotation shaft unit, and an unexposed photographing frame remain, The midway rewinding instruction means includes a midway rewinding instruction means for instructing rewinding, and a rewinding signal output means for determining the presence or absence of a photographable frame and outputting a rewinding signal when it is determined not to exist. Alternatively, when the output signal is output from the rewind signal output means, the position of the patrone shaft forming a part of the confirmation means corresponds to the output signal based on the output of the rotation shaft position detection means. So that the position, camera, characterized in that rewind the film.

(3) The rotating shaft position detecting means has a shape that changes according to the rotating position of the rotating shaft means, or a means that has a member having a different reflectance, and a means that detects a change in the shape or the reflectance. The camera according to (2) above.

(4) A film feeding drive source, a drive shaft for driving the patrone shaft to rotate the shaft of the patrone in which the film is housed, and the drive shaft of the film feeding drive source. Transmission means for transmitting a driving force, detection means for detecting a signal in conjunction with rotation of the drive shaft, and after the film is completely taken up on the cartridge, the drive shaft is stopped at a predetermined position. Therefore, the film feeding apparatus is provided with a control means for controlling the drive source based on the output of the detection means.

(5) A film feeding drive source, a drive shaft for driving the patrone shaft for rotating the shaft of the patrone in which the film is housed, and the drive shaft of the film feeding drive source. Transmission means for transmitting the driving force, detection means for detecting the absolute position of the drive shaft by changing the output in conjunction with the rotation of the drive shaft, and winding the film all over the patrone after shooting. A film feeding apparatus comprising: a control unit that controls the drive source based on the output of the detection unit to stop the drive shaft at a predetermined position after the film is taken.

(6) A film feeding drive source, a drive shaft for driving the patrone shaft for rotating the shaft of the patrone in which the film is housed, and the drive shaft of the film feeding drive source. The transmission means for transmitting the driving force, the output that changes in association with the rotation of the drive shaft, and the optical detection means that can detect the absolute position of the drive shaft based on the output value, and the film after the photographing is completed A film feeding apparatus comprising: a control means for controlling the drive source based on the output of the optical detection means for stopping the drive shaft at a predetermined position after the film is completely wound around the cartridge. .

(7) A film feeding drive source, a drive shaft for driving the patrone shaft to rotate the shaft of the patrone in which the film is housed, and the drive shaft of the film feeding drive source. Transmission means for transmitting driving force, detection means for detecting the absolute position of the drive shaft by using a member whose distance changes with the rotation of the drive shaft, and the film after the photographing is completed. And a control means for controlling the drive source on the basis of the output of the detection means for stopping the drive shaft at a predetermined position after the film is completely wound on the cartridge. .

(8) A film feeding drive source, a drive shaft for driving the patrone shaft to rotate the shaft of the patrone in which the film is housed, and the drive shaft of the film feeding drive source. An optical detection for detecting the absolute position of the drive shaft and the transmission means for transmitting the driving force, and configured so that the reflectance of the facing member changes with the rotation of the drive shaft. Means, and after winding the film all over the patrone after shooting,
A film feeding apparatus, comprising: a control unit that controls the drive source based on an output of the detection unit to stop the drive shaft at a predetermined position.

(9) A film feeding drive source, a drive shaft for driving the patrone shaft for rotating the shaft of the patrone in which the film is housed, and the drive shaft for the film feeding drive source. A transmission unit that transmits a driving force, a detection unit that detects the absolute position of the drive shaft, and a detection unit configured to change the resistance value in association with the rotation of the drive shaft; A film feeding apparatus comprising: a control means for controlling the drive source based on the output of the detection means for stopping the drive shaft at a predetermined position after the film is completely wound around the cartridge.

(10) A film feeding drive source, a drive shaft for driving the patrone shaft for rotating the shaft of the patrone in which the film is housed, and the drive shaft for the film feeding drive source. Transmission means for transmitting a driving force, detection means for detecting an absolute position of the drive shaft by changing output in association with rotation of the drive shaft, and disc rotating in conjunction with the patrone shaft. And a determination means for determining any one of two combinations of engagement of the cartridge shaft and the drive shaft by detecting the upper bar code and comparing the output thereof with the output of the detection means. A film feeding device characterized by:

[0056]

As described above, according to the present invention, it is possible to provide a camera capable of correctly recognizing whether or not it is a photographed patrone without a bar code recognition device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a camera of the present invention.

FIG. 2 is a diagram showing details of the cartridge 4 and the film 3 of FIG.

FIG. 3 is a diagram showing details of an R fork position detection plate 10.

FIG. 4 is a time chart for explaining the operation during film winding.

FIG. 5 is a flowchart illustrating the operation of the first embodiment.

FIG. 6 is a flowchart illustrating the operation of the first embodiment.

FIG. 7 is a diagram showing an example of a warning display.

FIG. 8 is a flowchart illustrating a normal shooting operation.

FIG. 9 is a flowchart illustrating the rewinding operation in the first embodiment.

FIG. 10 is a diagram showing another configuration example of the R fork position detection plate in the second embodiment of the present invention.

FIG. 11 is a diagram showing still another configuration example of the R fork position detection plate in the third embodiment of the present invention.

FIG. 12 shows a fourth embodiment of the present invention and is a timing chart for explaining the operation.

[Explanation of symbols]

1 ... Photographic lens, 2 ... Shutter, 3 ... Film, 3a ...
Photographing screen, 3b ... Magnetic recording layer, 3c ... Perforation, 4 ... Patrone, 4a ... Patrone shaft, 4b ... R fork engaging part, 4c ... Notch, 5 ... Disc, 5 '... Bar code, 6 ... Spool, 7, 9 ... Gear train, 8 ... R fork, 10 ... R fork position detection plate, 11 ... Planetary gear, 1
2 ... Motor, 13 ... Motor control circuit, 14 ... Sequence circuit, 15 ... Motor switching circuit, 16 ... Bar code PR
(Photoreflector), 17, 19, 23 ... Signal processing circuit, 18 ... R fork PR, 20 ... Detection circuit, 21 ... R
Fork position recognition circuit, 22 ... Perforation detection PR, 24 ... Magnetic recording circuit, 25 ... Magnetic reading circuit, 26
... Photometric circuit, 27 ... Exposure calculation circuit, 28 ... Shutter drive circuit, 29 ... Control circuit, 30 ... Halfway rewind input circuit, 3
1 ... Release input circuit, 32 ... Rear lid opening / closing signal input circuit,
33 ... Display circuit.

Claims (3)

[Claims] 1. A camera using a patrone whose use condition can be confirmed by the relative position of the patrone shaft and the exterior of the patrone, wherein the patrone shaft of the patrone is unique and rotatable according to the use condition of the patrone. Rotating shaft means freely engaged, driving means for driving the rotating shaft means, and the rotating shaft means are coupled so as to uniquely correspond in rotation amount, and the position of the rotating shaft means is detected. The rotation axis position detecting means and the rewinding instruction in the state where the unexposed photographing frame remains, or the rewinding instruction signal after the exposure is completed and the rewinding is completed, the Based on the output
A camera, comprising: control means for controlling the drive means so that the position of the Patrone axis corresponds to the output signal. 2. A camera using a patrone provided with confirmation means for confirming the usage state, wherein the patrone shaft of the patrone forms a part of the confirmation means according to the usage state of the patrone. A rotary shaft unit that is rotatably and rotatably engaged with the rotary shaft unit, a rotary shaft position detection unit that detects a stop position or a rotational state position of the rotary shaft unit, and an unexposed photographing frame remaining in the winding And a rewinding signal output means for outputting a rewinding signal when it is judged that there is no imageable frame, and if there is no photographable frame, When an output signal is output from the rewinding signal output means, the position of the cartridge shaft forming a part of the confirmation means corresponds to the output signal based on the output of the rotation shaft position detection means. As a location, a camera, characterized in that rewind the film. 3. The rotating shaft position detecting means includes a means having a shape that changes according to the rotating position of the rotating shaft means or a member having a different reflectance, and a means that detects a change in the shape or the reflectance. The camera of claim 2, wherein the camera comprises: