JP2755194B2 - camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for recording information used to prevent re-exposure of a film.

[0002]

2. Description of the Related Art Conventionally, there has been known a camera in which a film is pulled out from a patrone for photographing and then rewound to the patrone .

[0003]

[SUMMARY OF THE INVENTION However, in the conventional camera, had nothing to record information about exposure Sumikoma the cartridge. For this reason, with conventional cameras,
When a patrone having an unexposed frame and an exposed frame is loaded, it is not possible to discriminate between the exposed frame and the unexposed frame, and the exposed frame may be re-exposed during photographing.

According to the present invention, even if a patrone having an exposed frame is loaded, information used for preventing double exposure is stored in the patrone so that the exposed frame is not double-exposed. The aim is to obtain a configurable camera.

[0005]

Means for Solving the Problems In order to achieve the above object, according to the present invention, there is provided a film, a container for accommodating the film, and an information section (202A) capable of setting information by changing a state. A camera (201) which can be loaded with a patrone (202) and has a rewinding means (254) for rewinding a film outside the container into the container, and which can take out the patrone after the rewinding operation by the rewinding means;
Information setting means (210, 25) for setting identification information for identifying exposed and unexposed frames of the film in the information section by changing a setting state of the information section.
2A).

[0006]

According to the present invention , the setting state of the information section can be changed.
To identify exposed and unexposed frames of the film.
To set the identification information for the patrone in the information section of the patrone
The setting means is configured. Therefore, using the identification information,
For example, skip frames that do not require light supply (exposed frames)
Light supply position (exposure position)
Can be used for film feeding control
Without exposing unexposed frames, and
Double exposure can be prevented beforehand.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing a schematic configuration of a first embodiment of the present invention, and FIG. 2 is a sectional view of a patrone section in a state where a camera back cover in FIG. 1 is closed. In FIG. 1, an information recording section 2A magnetized by magnetic induction is provided on the back surface of a film draw-out opening (lip) of a patrone 2 loaded in a patrone chamber 1A of the camera body 1. As shown in FIG. 2, a magnetizing electromagnet 4 and a magnetism detecting element 5 such as a Hall effect element are arranged on the back surface of the back cover 3 facing the information recording section 2A, as shown in FIG. . The information recording means is constituted by the magnetizing electromagnet 4.

The back cover 3 is supported on the camera body 1 by a hinge (not shown) so as to be openable and closable, protrudes from an inner surface of one end thereof, and is fixed to the camera body 1 with a back cover claw 6 for locking. and protrusions 7 is provided for actuating the rear cover switch Sw ₁ closed. The back cover switch Sw ₁ is opened by the protrusion 7 when the back cover 3 is closed, and is configured to output a back cover signal at that time.

When the back cover 3 is closed, the locking member 10 provided with a hook portion 10a engageable with the back cover claw 6 is engaged with pins 11 and 12 fixed to the camera body 1, respectively. It has a pair of rectilinear grooves 10b, whereby the locking member 10 slides up and down between a raised position where the hook 10a and the back cover claw 6 are engaged and a lowered position where the engagement is released. It is configured to be movable, and is constantly urged by the extension coil spring 13 to the ascending position side (upward in FIG. 1).

Further, the locking member 10 is provided with a finger hook 14 for moving the locking member 10 to the lowering position against the urging force of the extension coil spring 13, and one of the locking members 10 is provided. On the side surface, a locked stepped portion 10c that engages with a later-described locking lever 15, a slope 10d, a slope 10e that engages with a second engagement pin 23 described later, and a flat portion 10f are formed.

A locking lever 15 for locking the locking member 10 at its lowered position against the urging force of the extension coil spring 13 is rotatably supported by a support shaft 16 fixed to the camera body 1. , Is always urged clockwise by the tension coil spring 17. The locking lever 15 is used to lock the locking member 1.
Hook 15a and arm 15b engaging with locked step 10c
The arm 15b is configured to be able to engage with the first engagement pin 21A protruding from the release lever 20.

A release lever 20 for releasing the lock of the lock lever 15 is rotatably supported coaxially by a support shaft 16 supporting the lock lever, and is provided with a tension coil spring 22.
Is always biased counterclockwise. The release lever 20 rotates counterclockwise to rotate the first engagement pin 21A.
Is brought into contact with the arm portion 15b of the locking lever 15 to thereby release the locking of the locking lever 15 and the clockwise rotation to separate the first engagement pin 21A from the arm portion 15b. It is pivotable between the second position. Release lever 2
The second engagement pin 21B protruding from the lower end 20a of the
When the locking member 10 is displaced from the lowered position to the raised position by the urging force of the extension coil spring 13, the locking member 10 can be engaged with the slope 10e and the flat portion 10f of the locking member 10.

At the upper end of the release lever 20, there is provided an armature 24 that is attracted to a first combination magnet 23 fixed to the camera body 1. This first
Although the combination magnet 23 normally attracts the armature 24 by the magnetic force of the permanent magnet, the magnetism is detected from the information recording unit 2A of the patrone 2 from the patrone discriminating circuit 50 (see FIG. 3) including the magnetic detecting element 5. When the coil is energized via the control circuit 51 in response to a signal indicating that the permanent magnet is not to be used, that is, a signal indicating that the patrone 2 is new, the magnetic force of the permanent magnet is canceled out (ie, OFF type). . The urging force of the tension coil spring 22 for urging the release lever 20 is stronger than the urging force of the tension coil spring 17 for urging the locking lever 15, and the urging force of the tension coil spring 13 for urging the locking member 10. The biasing force is configured to be stronger than the biasing force of the extension coil spring 22.

On the other hand, an extruding lever 30 having a pressing portion 30a at one end protruding into the patrone chamber 1A of the camera body 1 accommodating the patrone 2 is rotatably supported by a support shaft 31 implanted in the camera body 1. , Patrone 2
Is not loaded, it is constantly biased clockwise by a strong tension coil spring 32 so that the pressing portion 30a projects into the patrone chamber. Further, the patrone switch Sw ₂ which is fixed to the camera body 1, and opened when the pressing portion 30a against the urging force of the coil spring 32 tension by loading the cartridge 2 is displaced, time, loading of the cartridge 2 It is configured to output a signal. Further, the other end of the push lever is provided with an armature 34 that is attracted to an OFF type second combination magnet 33 fixed to the camera body 1. The second combination magnet 33 is turned off when the magnetic detection element 5 detects a patrone (ie, used patrone) in which the magnetic recording unit 2A has been magnetized.
And the suction of the armature 34 is stopped.

FIG. 3 is a block diagram for explaining the electric system of the first embodiment. In FIG. 3, a film rewinding device 53 has a known film end detecting device (not shown), and outputs a completion signal to the control circuit 51 when the rewinding is completed with the film leader remaining. Is configured. 4 and 5 are explanatory diagrams of the operation of the back cover locking portion. FIG. 4 shows a state in which the back cover is locked, and FIG. 5 shows a state in which the lock is released. ing. The operation of the above embodiment will be described below with reference to FIGS.

FIG. 4 shows a state immediately after rewinding is completed. The locking member 10 is at the raised position, and the back cover claw 6 is
Is locked by the hook 10a. The back cover switch Sw ₁ is set to the open state by the projection 7 of the back cover 3, and a back cover signal indicating that the back cover 3 is in the closed state is sent to the control circuit 51 in FIG. 3. Further, the second engagement pin 21B of the release lever 20 is engaged with the flat portion 10f of the locking member 10, and the armature 24 provided on the release lever 20 is attracted to the first combination magnet 23.

On the other hand, in the state immediately after the completion of the rewinding shown in FIG. 4, the pressing portion 30a of the pushing lever 30 in FIG.
Is pressed through the patrone, the patrone switch Sw ₂ is in an open state, and a patrone signal indicating that the patrone 2 is loaded is output from the control circuit 51.
Has been entered. The armature 34 provided on the pushing lever 30 is attracted by the second combination magnet 33.

In FIG. 4, the finger hook 14 of the locking member 10 is shown.
When the lock member 10 is pressed downward, the locking member 10
Descends against the urging force of. Thereby, the locking lever 1
The hook 15a of FIG. 5 rides on the slope 10d of the locking member 10 against the urging force of the extension coil spring 17, and the locking member 10
When the lock lever 15 reaches the lowered position shown in FIG. 5, the locking lever 15 rotates clockwise in FIG. 5 by the urging force of the extension coil spring 17, and locks the locked step 10c of the locking member 10. . Therefore, even if the finger is released from the finger hook 14, the locking member 10
It is held in the lowered position. At the same time, the hook 10a of the locking member 10 is disengaged from the hook 6 of the back cover, the locking of the back cover 3 is released, and the back cover 3 can be opened.

On the other hand, the flat portion 10f of the locking member 10 moves downward and separates from the second engagement pin 21B of the release lever 20, as shown in FIG. However, since the armature 24 is attracted to the first combination magnet 23, it is kept immobile. Further, when the back cover 3 is opened, since the projection 7 is moved away from the rear cover switch Sw _1, rear cover switch Sw ₁ is closed, thereby back cover signal back cover 3 shows a closed state is lost. Due to the disappearance of the back cover signal, the control device 51 momentarily energizes the second combination magnet 33 to release the attraction of the armature 34. Thus extrusion lever 30 by the biasing force of the tension coil spring 32 is rotated in the clockwise direction in FIG. 1, at the same time push the cartridge 2, which opens the cartridge switch Sw _2. The closing of the cartridge switch Sw _2,
The patrone signal indicating that the patrone 2 is loaded disappears.

When the patrone 2 is loaded into the patrone chamber and the back cover 3 is closed, the patrone 2 is pushed by the back cover 3, and the pressing portion 30a of the pushing lever 30 protruding into the patrone chamber is pushed by the patrone 2. Then, the push-out lever 30 is retracted from the patrone chamber, and accordingly, the push-out lever 30 rotates counterclockwise. At this time, the magnetizing electromagnet 5 constituting the recording device 52 and the magnetic detecting element 5 constituting the detecting device 50 come into contact with the information recording section 2a of the patrone 2, as shown in FIG. Further, the patrone switch Sw ₂ by the displacement of the pressing portion 30a is opened, a cartridge signal indicating that the cartridge 2 is loaded is outputted to the control circuit 51. Further, since the pressing lever 30 rotates counterclockwise against the urging force of the extension coil spring 32, the armature 2
4 is attracted to the permanent magnet of the second combination magnet 33.

On the other hand, when the back cover 3 is closed,
Is displaced as shown by a two-dot chain line A in FIG. 5 to a position where it can be engaged with the hook 10a of the locking member 10. Moreover, the projections 7 is displaced to a position shown by two-dot chain line B in FIG. 5, to open the rear cover switch Sw _1. As a result, the back cover switch Sw ₁ outputs a back cover signal indicating that the back cover 3 is closed to the control circuit 51.

The control circuit 51 to which the output signals of the back cover switch Sw ₁ and the patrone switch Sw ₂ are input sends a control signal to the patrone discriminating device 50. Information recording unit 2A
Is determined, that is, whether the cartridge 2 is used or unused, and the result is sent to the control circuit 51. Hereinafter, the operation will be described roughly when the cartridge 2 is used and when it is not used. A. In the case of used patrone (1) The magnetic detecting element 5 is the information recording unit 2 of the patrone 2
When detecting that A is already magnetized, the patrone determination circuit 50 outputs a used signal to the control circuit 51.

(2) When the used signal is input to the control circuit 51, the second combination magnet 3
3 is momentarily energized to release the suction of the armature 34. (3) When the suction of the armature 33 is released, the pushing lever 30 is rotated clockwise by the urging force of the extension coil spring 32 and presses the patrone 2 toward the back cover 3.

(4) Since the back cover 3 is in the unlocked state, when the patrone 2 is pressed, the back cover 3 is automatically opened. (5) at the same time the back cover 3 is opened, the cartridge 2 is extruded out of the cartridge chamber 1A, rear cover switch Sw ₁ and the cartridge switch Sw ₂ is closed. B. In the case of an unused patrone (1) The magnetic detecting element 5 is the information recording section 2A of the patrone 2
When it is detected that there is no magnetism, the patrone determination circuit 5
0 outputs a patrone unused signal to the control circuit 51.

(2) The control circuit 51 receives the unused signal and immediately receives the first combination magnet 2.
3 is momentarily energized. (3) When the first combination magnet 23 is turned off by the energization, the attraction of the armature 24 is released, and the release lever 20 is rotated counterclockwise to the release position by the urging force of the extension coil spring 22.

The rotation of the release lever 20 causes the first engagement pin 21A to push down the arm 15b of the locking lever 15, so that the locking lever 15 is counterclockwise against the urging force of the extension coil spring 17. In the direction indicated by the chain line C in FIG. (5) With this rotation, the hook 15a of the locking lever 15 is disengaged from the locked step 10c of the locking member 10, and the locking member 1
The lock at the lower position of 0 is released.

(6-1) By releasing the locking of the locking lever 15, the locking member 10 is raised from the lowered position shown in FIG. 5 to the raised position shown in FIG. 4 by the urging force of the tension coil spring 13. . (6-2) While the locking member 10 is being lifted, the locking member 1
0 abuts on the second engagement pin 21B of the release lever 20 at the release position indicated by the chain line D in FIG.
This is pushed, and the release lever 20 is rotated clockwise to return to the position shown in FIG.

(7) When the locking member 10 is further raised to the raised position shown in FIG. 4, the pins 11 and 12 are
Abuts the lower end of the (8) When the locking member 10 reaches the raised position, the second engagement pin 23 rides on the flat portion 10f of the locking member 10, and the release lever 20 causes the armature 24 to contact and adsorb to the first combination magnet 23, It is held at the position shown in FIG.

(9) On the other hand, when the locking member 10 is raised,
The hook 10a engages with the back cover claw 6, whereby the back cover 3 is locked in the closed position as shown in FIG. (10) When the photographing of the film in the cartridge 2 is completed, the control circuit 51 sends a signal to the film rewinding device 53 to rewind the film. When the rewinding of the film is completed, the control circuit 51 controls the film rewinding device 53
Is input.

(11) Upon receiving the rewind completion signal from the film rewinding device 53, the control circuit 51 sends the signal to the recording device 52 to momentarily magnetize the magnetizing electromagnet. Thereby, the information recording section 2A of the patrone 2 is magnetized, and the used signal of the patrone 2 is recorded. (12) Next, the finger hook 14 of the locking member 10 at the raised position (FIG. 4) is pushed up to lower the locking member 10 to the lowered position shown in FIG. Is released, and the back cover 3 is unlocked.

(13) On the other hand, during the lowering of the locking member 10, the inclined portion 10 d of the locking member 10 comes into contact with the hook 15 a of the locking lever 15, and resists the urging force of the extension coil spring 17. The locking lever 15 is rotated in the counterclockwise direction, and the hook 15a is rotated.
Is over the inclined portion 10d, the hook portion 15a engages with the locked step portion 10c of the locking member 10, and holds the locking member 10 at the lowered position.

(14) When the back cover 3 is opened, the projection 7 closes the back cover switch Sw ₁ . (15) In response to the closing signal of the back cover switch Sw ₁ , the control circuit 51 momentarily energizes the second combination magnet 33 to release the attraction of the armature 34. (16) By releasing the suction of the armature 34, the pushing lever 30 is rotated clockwise by the urging force of the extension coil spring 32, and presses the patrone 2 toward the back cover 3. (17)
When the pushing lever 30 is pressed, the patrone 2 is pushed out of the patrone chamber 1A, and at the same time, the back cover switch S
w ₁ is closed.

In the first embodiment, the recording of the used information is performed in connection with the operation of completing the rewinding of the film. However, the present invention is not limited to this. It is also possible to record the used information of the cartridge at an appropriate control signal transmission timing such as when the film is completely fed, when the film is completely wound, when the winding is completed, or when the rewinding is started.

In the first embodiment, an unused patrone discriminating camera in which used information is attached to the patrone by magnetic recording is shown. However, the used information is recorded by physical deformation such as a scratch. You may be comprised so that the presence or absence of the recording may be detected. Next, an unused cartridge discriminating camera that records used information by physical deformation will be described. FIG. 6 is a perspective view showing a state where the back cover is opened in the unused cartridge discriminating camera according to the second embodiment of the present invention.
FIG. 3 is a partially broken side view showing a schematic configuration of a used information recording unit.

In FIG. 6, a back lid 103 facing the film outlet flat surface portion 102a of the patrone 102 loaded in the patrone chamber 101A of the camera body 101 has
An indenter 104 having a pointed tip for recording used information on the patrone 2 and a detector 105 for detecting the recorded information are slidable along the back surface of the back cover 103 while being supported. A moving plate 106 is provided. This sliding plate 1
Reference numeral 06, as shown in FIG. 7, holds a locking plate 108 having a back cover claw 107, and is slidably supported on a holding plate 109 fixed to the back surface of the back cover 103.
At 10 it is constantly biased rightward in FIG. In addition, a finger hook 112 is formed integrally with the sliding plate 106 through an escape hole 111 formed in the back cover 103 and the holding plate 109.

The locking plate 108 has two guide grooves 114 in which the two guide pins 113 implanted in the holding plate 109 are engaged, respectively. Has been biased towards. The two back cover claws 107 provided on the locking plate 108 are configured to engage with the fixed hooks 116 fixed on the camera body 1 side when the back cover 103 is closed. . Further, the locking plate 108
7, a protruding arm 118 is provided at the left end portion so as to penetrate through an escape hole 117 provided in the holding plate 109 and engage with the sliding plate 106, and the sliding plate 106 moves to the left. The engagement protrusion 106a provided on the left end of the sliding plate 106 is configured to abut when it is pressed. The amount of movement a of the sliding plate 106 to the left in FIG.
5 and the difference between the distance C between the protruding arm 118 of the locking plate 108 and the engaging protrusion 106a of the sliding plate 106 is the amount of engagement between the back cover claw 107 and the fixed hook 116. It is configured to be slightly larger than d.

FIG. 8 is a schematic configuration diagram of a photoelectric detector showing an example of the detector 105.
Illuminates the flat portion 102a of the patrone 102 with a parallel light beam emitted through the lens, condenses the reflected light through a lens 105c, receives the light with a photoelectric conversion element 105d such as a position sensor (CCd), and records the light with an indenter 104. It is configured to detect the presence / absence of the straight line mark (scratch mark) m. With this photoelectric detector 105, the cartridge 1
As shown in FIG. 6, when a straight line mark m is recorded on the flat portion 102a of the camera 02, a signal from the detector 105 detecting the straight line mark m is provided at a predetermined position of the camera body 1 shown in FIG. The release button 120 is configured to be release locked.

In FIG. 9, a lock lever 121 is constantly urged clockwise by a tension coil spring 122 so that it can be displaced clockwise.
An armature 124 is provided to be sucked by 23.
Also, the magnet 123 is supplied with power and the armature 124
Is sucked, the lock lever 121 rotates counterclockwise against the urging force of the extension coil spring 122, and the other end 12
When the release button 120 is inserted into the locking groove 120a of the release button 120, the release button 120 is prevented from being pressed.

FIG. 10 is an electric system diagram of the second embodiment. The back cover switch Sw ₁ is a normally closed switch that is turned off when the back cover 103 is closed, similarly to the first embodiment shown in FIG.
When the cartridge switch Sw ₂ likewise in the first embodiment the cartridge 102 is loaded in the cartridge chamber 101A OF
F is a normally closed switch. FIG. 11 shows patrone 1
FIG. 12 is a cross-sectional view showing a state immediately after the back cover 103 is closed after loading the cover 02, and FIG. 12 is a flow chart for explaining the operation of the second embodiment. The operation of the second embodiment shown in FIG. 6 will be described below with reference to the flowchart of FIG.

Regardless of whether the patrone 102 has been used or not, the patrone 102 is placed in the patrone room 1 of the camera body 1.
01A (step S1) and the back cover 103 is closed, the inclined surface of the back cover claw 107 is fixed to the fixed hook 1 on the camera body 1 side.
16, the locking plate 108 is displaced leftward in FIG. 7 against the urging force of the extension coil spring 115. Further, when the tip of the back cover claw 107 rides on the inclined portion of the fixed hook 116, the back cover claw 107 is locked by the fixed hook 116, and the locking plate 108 is moved rightward by the urging force of the extension coil spring 115. Then, it returns to the original position and the locking is completed (step S2). Meanwhile, the back cover switch Sw ₁ and the patrone switch Sw ₂ are both opened, and the back cover signal and the patrone signal are sent to the control circuit 151. Back cover 1
03 is opened, the flat portion 102 of the patrone 102 is opened.
As shown in FIG. 11, the tip of the indenter 104 is pushed into a, and a minute indentation is given to a. In this case, finger hook 11
2 is displaced to the left in FIG.
As long as the patrone 102 is not moved to the left against the urging force of the extension coil spring 110 together with the patrone 102, as shown in FIG.
The linear mark m (used information) that is long in the axial direction is not recorded.

After receiving both the back cover signal and the patrone signal from both switches Sw ₁ and Sw ₂ , after a lapse of a predetermined time (time until the completion of locking), the control circuit 151
An output signal is sent to the patrone determination circuit 150 and the detector 1
05 to detect the presence or absence of the linear mark m (step S
3). The patrone determination circuit 150 illuminates the light source 115a of the detector 105, illuminates the plane portion 102a with a parallel light beam as shown in FIG. 8, and receives the reflected light with a photoelectric conversion element 115d such as CCd. The presence or absence of the mark m is detected from the output signal to determine whether or not the cartridge has been used.

When the used mark m is not attached to the patrone, that is, when an unused patrone is loaded, the patrone determination circuit 150 outputs an unused patrone signal to the control circuit 151. When the control circuit 151 receives the signal, it determines whether or not the release button 120 is in the release lock state. If the release button 120 is in the release lock state, the release is released and the release by the release button 120 is permitted (step S4). . Then, when the release button is first pressed, the film is skipped (step S5), and photographing is performed each time the release button is pressed (step S6). When photographing is completed for all the films in the cartridge 102, the control circuit 151 sends a rewind signal to the automatic winding and rewinding device 152, and rewinds all the films except for the film leader (step S7).

When the rewinding of the film is completed,
12 is moved to the left in FIG. When the sliding plate 106 moves to the left along with the finger hook 112 by a displacement amount C against the urging force of the extension coil spring 110, the engaging projection 106a of the sliding plate 106 comes into contact with the protruding arm 118 of the locking plate 108. When the sliding plate 106 further moves to the left by the displacement d, the engagement between the back cover pawl 117 and the fixed hook 116 is released, and the locking of the back cover is released. Further, the indenter 10 is formed together with the sliding plate 106.
4 moves to the left by the displacement amount a, the patrone 102
A straight line mark (scratch mark) of length a
m is added as shown by a chain line in FIG. 11 (step S8).

Next, with the finger rest 112 moved to the left by the displacement amount a (that is, in the unlocked state),
3 is opened (Step S9), the patrone 102 with the straight line mark m can be taken out from the patrone room 101A (Step S10). On the other hand, if the straight line mark m is detected in step S3, the patrone determination circuit 150 sends a used patrone signal to the control circuit 151. The control circuit 151 receiving this output signal
Immediately energizes the release lock magnet 123 and attracts the armature 124 to rotate the lock lever 122 in a counterclockwise direction.
To disable the release (step S1).
1). Therefore, the finger hook 112 is moved to the position shown in FIG.
And moves to the left to release the lock of the back cover 103 (step S12). However, in this step S12, since the straight line mark m is already attached, the indenter 104
Moves only on the straight line mark m, and the mark m is not added twice.

When the finger hook 112 moves to the left in FIG. 11, the detector 105 provided on the sliding plate 106
4 and is displaced to the left by a. Accordingly, the detector 105 is placed at a position further away by b from the used mark m to the left, and no linear mark m is detected at that position. Therefore, the patrone discriminating circuit 150 sends an unused patrone signal to the control circuit 151, and the control circuit 151 that has received the signal sends the unused patrone signal to the release lock magnet 12.
Then, the power supply to 3 is stopped and the release lock is released (step 13).

When the release lock is released, the flow shifts to step S9, where the back cover is opened (step S9) and the cartridge is taken out (step S10). When the finger is released from the finger rest 112 without opening the back cover 113 after the end of step S8, the detector 105
6 and automatically returns to the position shown in the right original position (FIG. 11) by the urging force of the tension coil spring 110. In this case, since the used mark m that has already been added is detected, the flow shifts to step S11 to release the release lock.

In the second embodiment, double shooting of the cartridge can be prevented with a relatively simple configuration. In addition, if the patrone is taken out after loading the unused patrone and closing the back cover before the photographing has not yet started, the used mark m is attached to the patrone. In such a case, the used mark m may be covered with a paint or the like.

FIG. 9 shows the release inhibiting means for mechanically inhibiting the release.
A means for electrically inhibiting release may be provided therein so that release is not possible even if the release button is pressed. The embodiment shown in FIGS. 1 and 6 is an example in which the present invention is applied to a camera of a type in which a patrone is loaded from a direction perpendicular to the film surface, but the patrone is moved in the axial direction of the rewind shaft. FIG. 13 shows an embodiment of the present invention applied to a so-called drop-in loading camera to be loaded.

FIG. 13 is a perspective view of a third embodiment of the present invention showing a state in which the patrone is loaded with the camera body turned upside down. FIG. 14 shows a state in which the patrone is completely loaded and the back cover is closed. FIG. 15 is a cross-sectional view of the patrone chamber showing a state when the patrone is taken out. In FIG. 13, on the bottom of the camera body 201,
A patrone chamber 201A into which the patrone 202 can be inserted in the axial direction (the direction of the arrow Y) and an insertion slot 201B for the leader portion F of the film are provided. I have. Back cover switch S
w ₁ is a normally closed switch, it is configured to be opened by the closing operation of the back cover 203. The patrone 202 includes a patrone chamber 201A as shown in FIG.
Semi-cylindrical holder body 204 that is axially movable within
And a locking member 205 are housed in a patrone holder.

At one end of the holder body 204, as shown in FIG. 15, a locking member 205 rotatable about a pin shaft 205A is provided, and the cartridge 202 is inserted by inserting the patrone 202 in FIG. When pivoted in the counterclockwise direction, the hook 205B at the tip moves to the cartridge 202 as shown in FIG.
It is configured to lock the right edge of the. Locking member 2
The 05, the cartridge switch Sw ₂ normally closed is provided, when the locking member 205 locks the cartridge 202, the engaging open state to the cylindrical surface of the cartridge 202. The locking member 205 and the patrone holder 204
A click device including a click spring 206 and a click ball 207 is provided at a connection portion with the lock member 205.
Rotates counterclockwise from the release position shown in FIG.
It is configured to be held at the locking position shown in FIG.

The lower part of the holder body 204 has a motor M
2 screwed with feed screw 207 driven by
04A, whereby the holder body 204 is
It is movable in the axial direction according to the rotation of the feed screw 207. Further, the projecting portion 204A is attached to the holder main body 204.
When There is moved to the left end position of the cartridge chamber 201A as shown in FIG. 14, engages the first limit switch Sw ₃ to open it, when moving to the right end position as shown in FIG. 5, the second limit switch Sw ₄ engage and are configured to open it.

The patrone 202 has an information recording portion 202A magnetized by magnetic induction at the film outlet as shown in FIG. 13, and a magnetic head 210 which can contact the information recording portion 202A is attached to one end of a leaf spring 211. It is fixed. The other end of the leaf spring 211 is fixed to one arm 212 a of the lever 212. The lever 212 is rotatably supported by a pin shaft 213 implanted in a fixed portion of the camera body 201, and is always counterclockwise rotated by a tension coil spring 214 (the magnetic head 210 moves the information recording unit 202
A in the direction away from A). And lever 2
Armature 215 is provided on the other arm part of 12,
When the armature 215 is attracted to the electromagnet Mg against the urging force of the extension coil spring 214, the magnetic head 210
Is the magnetic recording unit 202 of the patrone 202 as shown in FIG.
A.

FIG. 16 is a block diagram showing an electric system according to the third embodiment. The information recording circuit 252A and the information detecting circuit 252B commonly include the motor circuit 251 for controlling the motor M for moving the patrone and the magnetic head 210. And a magnet control circuit 253 for controlling an electromagnet Mg for displacing the magnetic head 210.
Are controlled by a central processing unit CPU (hereinafter simply referred to as “CPU”). Further, an automatic film rewinding / rewinding device 254 provided on the camera body 201 and a display device 255 for displaying the number of photographed frames and the like are also provided by the CPU.
The CPU inputs signals from the film movement detecting device 256 and the film end detecting device 257 for detecting the winding end and the rewinding end of the film. The switch Sw ₅ can be set even before the shooting of all the films is completed.
This is a rewind switch capable of arbitrarily rewinding the film. The switch is closed by pressing a rewind permission button 267, and rewinding is performed. In addition, the film movement detecting device 2
56 includes a sprocket wheel that meshes with the perforation of the film and a detector that detects the rotation of the sprocket wheel, and continuously outputs a pulse signal according to the movement of the film, and stops transmitting the pulse signal when the film stops. It is configured as follows. Therefore, C
The PU determines that the entire winding of the film has been completed by stopping the output of the detection signal, and instructs rewinding. In addition, the film end detection device is provided with a pin interlocking with the switch so as to protrude into the film path, and detects the position of the pin protruding into the film path when the film end passes,
This is a known device for detecting the end of the film. The CPU stops the rewinding operation by inputting the detection signal.

FIGS. 17 to 19 show the mounting of the patrone 202.
In the flow chart for explaining the operation from filling to taking out
is there. Hereinafter, the third embodiment will be described with reference to FIGS.
The operation of the example will be described. As shown in FIG.
In the open state, the back cover switch Sw₁Is closed
You. Further, the holder main body 204 is, as shown in FIG.
It is located at the right end of the patrone room 201A.
Switch Sw_TwoAre also closed. Furthermore, the first
Limit switch Sw_ThreeIs closed and the second limit switch
Switch Sw _FourHas been opened. Furthermore, the electromagnet Mg
Has been released from the armature 215,
The pad 210 is an information recording unit 202A of the patrone 202.
It is located at the contact release position away from the camera.

In the above state, the patrone 202 is inserted into the holder main body 204 of the patrone chamber 201A as shown in FIG.
Into the film insertion opening 201B. Next, the locking member 205 is rotated counterclockwise to engage the hook 205B with the right edge of the patrone 202, and fix the patrone 202 to the holder body 204. At this time, the patrone switch Sw ₂ is opened by contacting the cylindrical portion of the patrone 202. Further, the locking member 205 is prevented from returning in the clockwise direction by the click stop devices (206, 207).

The opening signal of the cartridge switch Sw ₂ is sent to the CPU shown in FIG. 16, and the operation of the CPU is started. Cartridge CPU which received the opening signal from the switch Sw ₂ is immediately motor control circuit 2
A control signal is sent to 51 to drive the motor M. In response to the rotation of the feed screw 207 driven by the motor M, the holder main body 204 moves to the left in FIG.
02 is started (step S101). As soon as the feeding of the patrone 202 is started, the second
Limit switch Sw ₄ is closed, CPU based on the signal of the Sw ₄ sends a signal to the magnet control circuit 253, energizing the electromagnet Mg. As a result, the armature 215 is attracted to the electromagnet Mg, so that the lever 21
2 rotates clockwise against the urging force of the extension coil spring 214 to bring the magnetic head 210 into contact with the surface of the information recording section 202A of the cartridge 202 (step S10).
2). At this time, the magnetic head 210 is brought into contact with the information recording section 202A with an appropriate light pressure by the elastic force of the leaf spring 211.

On the other hand, the CPU controls the magnet control circuit 25
3 and immediately sends a signal to the information recording / detecting device 252 and the cartridge 20 together with the holder body 204.
While 2 is sent, it is detected whether or not the information recording unit has already magnetically recorded the used signal, the number of photographed frames, and the like (step S103). The result is CP
It is stored in U.

When the holder main body 204 is fed to the left end position as shown in FIG. 14, the first limit switch Sw ₃ is opened, and based on a signal from the first limit switch Sw ₃ , the CPU operates the motor control circuit. 251 to stop the motor M, and the feeding of the cartridge is completed (step S104). When the CPU sends a motor stop signal to the motor control circuit 251,
A signal is sent to the magnet control circuit 253 to stop the power supply to the electromagnet Mg. Thereby, the armature 215 is released from the attraction of the electromagnet Mg, and the lever 212 rotates counterclockwise by the urging force of the extension coil spring 214,
The contact of the magnetic head 210 with the information recording unit 202A is released (step S105).

Next, the back cover 203 is closed (step S10).
6) When, rear cover switch Sw ₁ is opened, its back cover signal is sent to the CPU. Here, the CPU determines in step S103 whether or not the loaded cartridge 202 is unused based on the detection signal stored in the memory (step S107). Here, when the used signal or the photographed frame signal is not recorded in the information recording unit 202A, that is, when no signal is detected, the cartridge 202 is determined to be unused.

In step S107, step S1
When the CPU determines from the detection information at step 03 that the patrone is an unused product, the CPU sends a signal to the automatic winding and rewinding device 254 to cause the film to be fed by a predetermined amount, and then temporarily stops film winding (step S108), and wait until the release button is pressed. Next, it is determined whether or not the release button is pressed (step S109). When the release button is pressed, a predetermined photographing process is performed (step S110).
Winding of the film is started by a command from U (step S111). When the film winding is started, it is immediately determined whether or not the film has been fed by one frame based on an output signal from the film movement detection device 256 (step S112). The number of shot frames is displayed on the device 255 (step S113),
The film winding is stopped (step S114),
The process returns to step S109 and waits until the next release operation is performed.

If it is determined in step S112 that the film has not been wound up by one frame, the film is being wound up by one frame, or the entire number of frames of the film is wound up, and it is impossible to wind up further. Is the case. Therefore, in the next step, it is determined whether or not the feeding of the total number of frames of the film has been completed based on the signal from the film movement detecting device 256 (step S115). If the number of frames to be photographed remains, step S112. When it is determined that the winding of all frames has been completed, the winding operation is stopped (step S116), and the CPU immediately stores that the film has been used up (step S117). .

On the other hand, in step S109, before the release button is pressed, it is determined whether or not the rewind button has been pressed halfway before the shooting of all the frames has been completed, that is, whether or not the rewind button has been pressed. If no rewinding is performed, the process returns to step S109 and waits until the release button is pressed. If rewinding is performed, the number of frames displayed on the display device 255 at that time is displayed. CPU
(Step S119).

Step S117 or step S119
When the memory is completed in step, the CPU instructs the automatic winding / rewinding device 254 to rewind the film (step S120). The rewinding operation is continued until a signal is output from the film end detecting device 257, that is, until the rewinding is completed (step S121). Step S1
After rewinding is complete at 21, when opened the back cover back cover switch Sw ₁ is closed accordingly (step S12
2), in response to the closing of the rear cover switch Sw _1, electromagnet Mg
And the magnetic head 201 is brought into contact with the information recording unit 202A of the cartridge (step S123).

Following the energization of the electromagnet Mg, the motor M is further driven to start sending out the patrone (moving to the right in FIG. 14) together with the holder body 204 (step 124). When cartridge delivery of starts, first limit switch Sw ₃ is closed, according to closing of the switch Sw _3, step S117 and step S119 as all frames spent or photographic frames Number of memory in The used information is recorded in the information recording unit 202A by the magnetic head 210 while the cartridge 202 is moving (step S125).

Further, the cartridge 202 is sent out together with the holder body 204, and the second limit switch Sw ₄
Is opened, the motor M stops driving, and the feeding of the cartridge is completed (step S126). The second
When the limit switch SW ₄ is opened, the electromagnet M
g, the armature 215 is attracted against the urging force of the extension coil spring 214, the magnetic head 210 is separated from the information recording unit 202A, and the contact is released (step S127). Next, the locking member 205 is rotated clockwise against the urging force of the click spring 206 to release the engagement between the right edge of the patrone 202 and the hook 205B,
The patrone 202 is taken out of the patrone room 201A (step S128). Patrone switch Sw ₂
Is closed in response to the clockwise rotation of the locking member 205,
A series of operations from loading to unloading of the patrone is completed.

On the other hand, if it is determined in step S107 that the loaded patrone is not an unused item, it is determined whether all the frames have been photographed (used) according to the information already recorded in the information recording unit 202A. It is determined whether the product is a half-used product that has been rewound halfway (step S12).
9) In the case of half-use, re-feeding is performed by one frame more than the number of frames based on the number-of-frames recorded in the information recording unit 202A (step S130), and step S1 is performed.
Move to 09.

If it is determined in step S129 that all frames have been photographed (used), the back cover opening symbol is flashed on the display device 255 to prompt the back cover 203 (step S131). It waits until 203 is opened (step S132). Step S132
If the back cover 203 is opened at
To, without energizing, by driving the motor M in response to the opening of the back cover Step Sw _1, to start the feeding of the cartridge 202. (Step S133). In this case, the sending is continued without re-recording the used information in the information recording unit 202A, and the second limit switch Sw ₄
Then, the motor M is stopped, the feeding of the patrone is completed (step S134), and the process then proceeds to the switch S128 for taking out the patrone.

In FIG. 15, the cartridge 202
The cartridge switch Sw ₂ when is opened by pushing with a finger after removal of, the holder main body 2 by driving the motor M
04 is fed to the left allows open as the rear cover 203 in FIG. 14, again press the cartridge switch Sw _2, the motor M is reversed feeding the holder body 204 to the right, the holder main body 204 of the cartridge 202 Can be attached to

The information recording unit 2 of the patrone of this embodiment
In 02A, information for identifying whether all frames have been used, semi-used, or unused has been recorded, but other identification information may be recorded. Examples are listed below. (1) Sensitized photographing information indicating that photographing was performed with a sensitivity other than the film-specific sensitivity set.

(2) Date information indicating when the patrone was loaded into the camera or when it was removed from the camera. (3) Identification information indicating a photographer or the like. (4) JP-A-54-26721 records information indicating a trimming range (a range to be printed) outside a frame of a frame desired to be trimmed in photographing of the frame to be trimmed so that the trimming can be automatically performed during development. , U.S. Patent 46
No. 78299 and No. 4678300, there are cameras as described in the publications. In the case of this camera, trimming information indicating whether or not there is a frame for which a trimming range is recorded, and if so, which frame.

In the case of (1), the film sensitivity information among the information (so-called DX information) provided on the patrone is read, and it is determined that other sensitivity is set by the camera. , Information indicating the set sensitivity may be recorded in the recording unit 202A. In the case of (2), the date of loading the cartridge or the date of removing the cartridge, which is stored in the memory in the CPU, may be recorded in the recording unit 202A.

In the case of (3), information to be recorded may be set in advance, and the information may be recorded in the recording unit 202A. In the case of (4), the fact that shooting with recording of the trimming range has been performed may be stored in a memory in the CPU, and this may be recorded in the recording unit 202A. Also, information indicating how many frames and which frames have been photographed with the recording of the trimming range may be recorded.

[0073]

According to the present invention , the setting state of the information section is changed.
By doing so, the exposed and unexposed frames of the film can be identified.
Set identification information for identification in the information section of the patrone.
Information setting means. Use this identification information
Then, for example, skip frames that do not require light supply (exposed frames)
The frames that need light supply (unexposed frames) are
Use for film feed control for cueing to position
Exposure without exposing unexposed frames
It is possible to prevent double exposure of already-exposed pieces.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a sectional view of a patrone chamber showing a main part of the present invention.

FIG. 3 is a block diagram for explaining an electric system of the embodiment shown in FIG. 1;

FIG. 4 is an operation explanatory view of the back cover locking portion shown in FIG. 1, and is a plan view in a state where the back cover is locked.

FIG. 5 is an explanatory view of the operation of the back cover locking portion shown in FIG. 1, and is a plan view showing a state in which the back cover is unlocked.

FIG. 6 is a perspective view showing a second embodiment of the present invention, in which a back cover is opened.

FIG. 7 is a partially cutaway side view showing the unlocking portion of the back cover in FIG. 6;

FIG. 8 is a sectional view showing a schematic configuration of an embodiment of a detector.

FIG. 9 is a perspective view showing an example of a release prohibiting device.

FIG. 10 is a block diagram for explaining an electric system of a second embodiment shown in FIG. 6;

FIG. 11 is a cross-sectional view of the patrone chamber in the embodiment of FIG. 6 with the back cover closed.

FIG. 12 is a flowchart for explaining the operation of the second embodiment shown in FIG. 6;

FIG. 13 is a perspective view showing a state in which a back cover of a drop-in loading type camera according to a third embodiment of the present invention is opened.

FIG. 14 is a cross-sectional view of the patrone chamber showing a state where the back cover is closed after the patrone is loaded in the third embodiment.

FIG. 15 is a sectional view of the patrone chamber showing a state where the patrone is taken out.

FIG. 16 is a block diagram for explaining an electric system of a third embodiment shown in FIG.

FIG. 17 is a flowchart for explaining the operation of the third embodiment.

FIG. 18 is a flowchart for explaining the operation of the third embodiment.

FIG. 19 is a flowchart for explaining the operation of the third embodiment.

[Description of Signs of Main Parts]

 DESCRIPTION OF SYMBOLS 1, 101, 102 Camera main body, 1A, 101A, 201A patrone room, 2, 102, 202 patrone, 3, 103, 203 Back cover, 4 Electromagnet 5 Magnetic detection element 104 Indenter 105 Detector 106 Sliding plate 108 Locking plate 210 Magnetic head 51, 151 Control circuit 252A Recording circuit 252B Detection circuit CPU Central processing circuit

Claims (7)

(57) [Claims] 1. A patrone having a film, a container for accommodating the film, and an information section whose information can be set by changing a state can be loaded, and a film outside the container is wound into the container. A camera which includes a rewinding means for returning the film cartridge and which can take out the patrone after the rewinding operation by the rewinding means. A camera comprising information setting means for setting identification information for identifying a frame and an unexposed frame. 2. The camera according to claim 1, wherein the identification information is information indicating an exposed frame. 3. The camera according to claim 1, wherein the information section is supported by the container. 4. The camera according to claim 1, wherein the information setting unit sets the identification information in the information unit according to an operation of the rewinding unit. 5. The camera according to claim 4, wherein the information setting unit sets the identification information in the information section in response to completion of the rewinding operation by the rewinding unit. 6. An information section driving means for electrically driving the information section, wherein the information setting section includes the identification section when the information section driving section is driving the information section. The camera according to claim 1, wherein information is set. 7. The camera according to claim 1, wherein the information setting unit sets the identification information by magnetically changing a setting state of the information unit.