JP3109501B2 - Patrone information detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a patrone provided with a film.

[0002]

2. Description of the Related Art Conventionally, a patrone has been known in which a film and a container for accommodating the film are provided, and when the film is used for photographing or the like, the film is pulled out from the container. Further, as described in JP-A-53-8133, a magnetic recording medium is provided on a film storage container, the amount of use is recorded on the medium, and when the storage container is loaded into the main body, the medium is read from the medium. It is known that information is reproduced, and a main body performs display based on the reproduced information.

As described in JP-A-56-154720, a magnetic recording medium is provided on a film cassette, and when a film is wound after the cassette is loaded, information (the number of remaining frames of the film) is read from the medium by a reproducing head. ) Is known, and the reproduced information is used for displaying the number of frames.

[0004]

However, none of the above-described conventional patrones has information used for film feeding control and patrone loading control. Further, in the patrone described in the above-mentioned publication, there is no description about information setting regarding a patrone of a type in which a film drawn out of a container is rewound into a container (hereinafter referred to as a rewind type). It was unclear how to construct this.

[0005] It is an object of the present invention to provide a rewind-type patrone having information of high utility value on the side of the apparatus into which the patrone is loaded.

[0006]

According to the present invention, an apparatus capable of handling a patrone (202) having an information recording section (202A) on which information is recorded and capable of detecting information from the information recording section. , The information recorded in the information recording section is provided in the axial direction of the patrone, and the patrone is moved to the first position (the patrone chamber 20).
A moving means (motor) that moves in the axial direction from a right end position of the first cartridge 1A to a second position (a left end position of the patrone chamber 201A) different from the first position, and stops the operation when the movement to the second position is completed; M, the feed screw 207, the holder main body 204), and before the movement of the patrone to the second position is completed, information can be detected from the information recording unit,
Information detection means (recording detection device 252, magnetic head 210) that cannot detect information from the information recording unit when the movement of the patrone to the second position is completed, and movement of the patrone to the second position. Before completion, the information detecting means is provided with a control means (CPU) for detecting information from the information recording unit. Further, in the invention according to claim 2 of the present application, in the patrone information detecting apparatus according to claim 1, the control means is configured to control the operation of the moving means. Also,
In the invention according to claim 3 of the present application,
The patrone information detecting device according to claim 1, wherein the control unit sends the patrone from the information recording unit to the information detecting unit while the patrone is moving from the first position to the second position. Is configured to perform the information detection. Further, in the invention according to claim 4 of the present application, in the cartridge information detecting device according to any one of claims 1 to 3, the information recording section is a magnetic recording section in which information is magnetically recorded. Further, in the invention according to claim 5 of the present application, in the patrone information detecting device according to any one of claims 1 to 4, in the information recording unit, a used signal or a photographed frame number signal is provided. It was recorded. In the invention according to claim 6 of the present application, claim 1
6. In the patrone information detecting device according to any one of the first to fifth aspects, the patrone has a leader portion, and is inserted in a state where the leader portion is pulled out. Further, in the invention according to claim 7 of the present application, in the patrone information detecting device according to any one of claims 1 to 6, a film can be pulled out from the patrone whose movement to the second position is completed. Further, an additional drawing means (winding / unwinding means 254) is further provided. further,
In the invention according to claim 8 of the present application,
8. The patrone information detecting device according to claim 7, wherein the extracting means is a film extracting means of a camera capable of extracting the film for photographing, and the first position is the patrone for inserting the patrone into the camera. And the second position is a position where the film can be pulled out by the film pulling-out means of the camera for the photographing. In the above description, the configuration of the present invention and the reference numerals of the later-described embodiments are also described together with the configuration of the present invention, but this is for the purpose of facilitating the correspondence between the present invention and the later-described embodiments. It is not shown that the configuration is limited to the above.

[0007]

[0008]

[0009]

According to the present invention, the moving means moves the patrone from the first position (the right end position of the patrone chamber 201A) to the second position (the left end position of the patrone chamber 201A) different from the first position in the axial direction. And the operation is stopped when the movement to the second position is completed, and the information detecting means can detect information from the information recording unit before the movement of the patrone to the second position is completed. When the movement of the patrone to the second position is completed, it is impossible to detect information from the information recording unit, and the control unit performs the information detection before the movement of the patrone to the second position is completed. Means for detecting information from the information recording unit. According to the invention of claim 2 of the present application,
The control means also controls the operation of the moving means.
Further, according to the invention according to claim 3 of the present application, the control unit transmits the information from the information recording unit to the information detection unit while the patrone is moving from the first position to the second position. Information detection. According to the invention of claim 4 of the present application, the information recording section is a magnetic recording section, and information is magnetically recorded in the magnetic recording section. Claim 5 of the present application
According to the invention, a used signal or a photographed frame number signal is recorded in the information recording unit. According to the invention of claim 6 of the present application, the patrone has a leader portion, and the patrone is inserted with the leader portion pulled out. Further, according to the invention of claim 7 of the present application, the drawer can pull out the film from the patrone whose movement to the second position is completed. According to the invention of claim 8 of the present application, the drawer is a film drawer of a camera that can draw the film for photographing, and the first position is that the cartridge is the camera. The second position is a position where the film can be withdrawn by the film withdrawing means of the camera for the photographing.

[0010]

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. A projection 7 for operating the closed back cover switch Sw1 is provided. The back cover switch Sw1 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 tension 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 coaxially rotatably supported 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 which 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 at one end a pressing portion 30a 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. The patrone switch Sw2 fixed to the camera body 1 is opened when the pressing portion 30a is displaced against the urging force of the tension coil spring 32 due to the loading of the patrone 2, and at this time,
It is configured to output a loading signal of the patrone 2. 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 in the raised position, and
Is locked by the hook 10a. The back cover switch Sw1 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. 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 Sw2 is in an open state, and a patrone signal indicating that the patrone 2 is loaded is sent to the control circuit 5.
1 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. When the back cover 3 is opened, the projection 7 is separated from the back cover switch Sw1, and the back cover switch Sw1 is closed, whereby the back cover signal indicating that the back cover 3 is closed disappears. 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. Accordingly, the pushing lever 30 is provided with a tension coil spring 32.
Is rotated clockwise in FIG. 1 by the urging force to push out the patrone 2 and at the same time, the patrone switch Sw2
To open. By closing the patrone switch Sw2, 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 push-out lever 30 projecting 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 Sw2 is opened by the displacement of the pressing portion 30a, and a patrone signal indicating that the patrone 2 is loaded is output 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. Further, the protrusion 7 is displaced to the position shown by the two-dot chain line B in FIG. 5 to open the back cover switch Sw1. As a result, the back cover switch Sw1 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 Sw1 and the patrone switch Sw2 are inputted.
Sends a control signal to the patrone determination device 50, and in response to the signal, the magnetic detection element 5 determines whether or not the information recording unit 2A of the patrone 2 is magnetized, that is, whether the patrone 2 is used or unused. The control circuit 5 determines
Send to 1. 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) The control circuit 51, upon receiving the used signal, immediately transmits 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 lock of the back cover 3 is in the released state, when the patrone 2 is pressed, the back cover 3 is automatically opened. (5) Simultaneously with opening of the back cover 3, the patrone 2 is pushed out of the patrone chamber 1A, and the back cover switch Sw1 and the patrone switch Sw2 are 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, upon receiving the unused signal, 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.

(4) By the rotation of the release lever 20,
Since the first engagement pin 21A pushes down the arm 15b of the locking lever 15, the locking lever 15
5 in a counterclockwise direction as shown by a 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, 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 portion 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 Sw1. (15) In response to the closing signal of the back cover switch Sw1, the control circuit 51 momentarily energizes the second combination magnet 33 to release the attraction of the armature 34. (16)
The release of the armature 34 causes the pushing lever 30 to move.
Is rotated clockwise by the urging force of the tension 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 Sw1
Is closed.

In the first embodiment, the recording of the used information is performed in association 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 cover 103 facing a film outlet flat surface portion 102a of a patrone 102 loaded in a 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 with which the two guide pins 113 implanted in the holding plate 109 are respectively engaged. 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, the lock lever 121 is constantly urged clockwise by a tension coil spring 122 so as to be displaceable 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, in which the back cover switch Sw1 is the same as in the first embodiment shown in FIG.
A normally-closed switch that is turned off when the back cover 103 is closed. The patrone switch Sw2 is also a normally closed switch that is turned off when the patrone 102 is loaded in the patrone chamber 101A, as in the first embodiment. FIG. 11 is a cross-sectional view showing a state immediately after the back cover 103 is closed after the cartridge 102 is loaded, 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 Sw1 and the patrone switch Sw2 are both opened, and the back cover signal and the patrone signal are sent to the control circuit 151. When the back cover 103 is opened, the flat portion 1 of the patrone 102 is opened.
As shown in FIG. 11, the tip of the indenter 104 is pushed into 02a, and a minute indentation is given. In this case, unless the finger hook 112 is displaced to the left in FIG. 7 and the indenter 104 is moved to the left together with the sliding plate 106 against the urging force of the extension coil spring 110, the cartridge 1 shown in FIG.
No linear mark m (used information) long in the axial direction 02 is recorded.

After receiving both the back cover signal and the patrone signal from both switches Sw1 and Sw2, after a predetermined time (time until the completion of locking) has elapsed, the control circuit 151 is started.
Sends an output signal to the patrone determination circuit 150 and causes the detector 105 to detect the presence or absence of the linear mark m (step S3). 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 rest 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 structure. 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 by turning the camera body 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 film leader F are provided, and the back cover 203 is provided to be openable and closable so as to cover the bottom thereof. I have. Back cover switch S
w1 is a normally closed switch, which is configured to be opened by the closing operation of the back cover 203. The patrone 202 includes a patrone chamber 201 as shown in FIG.
A semi-cylindrical holder body 20 movable in the axial direction within A
4 and a locking member 205 are housed in a patrone holder.

At one end of the holder main body 204, as shown in FIG. 15, there is provided a locking member 205 rotatable about a pin shaft 205A, 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
05 is provided with a normally closed type patrone switch Sw2, and when the locking member 205 locks the patrone 202, it engages with the cylindrical surface of the patrone 202 to be opened. The locking member 205 and the cartridge holder 20
4 is provided with a click device including a click spring 206 and a click ball 207, and the locking member 20.
When the lever 5 rotates counterclockwise from the release position shown in FIG. 15, it is configured to be held at the locking position shown in FIG.

At the lower part of the holder body 204, 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 it moves to the left end position of the patrone chamber 201A as shown in FIG. 14, it engages with and opens the first limit switch Sw3, and when it moves to the right end position as shown in FIG. It is configured to engage and open this.

The patrone 202 has an information recording section 202A magnetized by magnetic induction at a film draw-out opening as shown in FIG. 13, and a magnetic head 210 capable of contacting the information recording section 202A is provided at 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. A motor circuit 251 for controlling a motor M for moving a patrone, an information recording circuit 252A and an information detecting circuit 252B which commonly include a magnetic head 210 are shown. 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 Sw5 is a rewind switch capable of arbitrarily rewinding the film even before the photographing of all the films is completed. The switch Sw5 is closed by pressing the rewind permission button 267, and rewinding is performed. The film movement detection device 256 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. The transmission of the signal is stopped. Therefore,
The CPU 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 are flow charts for explaining the operation from loading to unloading of the patrone 202. FIG. The operation of the third embodiment will be described below with reference to FIGS. As shown in FIG. 13, when the back cover 203 is open, the back cover switch Sw1 is closed. As shown in FIG. 15, the holder main body 204 is located at the right end position of the patrone chamber 201A, and the patrone switch Sw2 is also closed. Furthermore, the first
The limit switch Sw3 is closed, and the second limit switch Sw4 is open. Furthermore, the electromagnet M
Since g has released the suction of the armature 215, the magnetic head 210 moves the information recording unit 202 of the patrone 202.
A is located at a contact release position away from A.

In the above state, the patrone 202 is inserted into the holder 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 Sw2 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 Sw2 is sent to the CPU shown in FIG. 16, and the operation of the CPU is started. Upon receiving the opening signal from the patrone switch Sw2, the CPU immediately sends a control signal to the motor control circuit 251 to drive the motor M. In response to the rotation of the feed screw 207 by the driving of the motor M, the holder main body 204 moves to the left in FIG. 15, and the feeding of the cartridge 202 is started (step S101).
As soon as the feeding of the cartridge 202 is started, the second limit switch Sw4 is closed, and based on the signal of the Sw4, the CPU sends a signal to the magnet control circuit 253 to energize the electromagnet Mg. As a result, the armature 215 is attracted by the electromagnet Mg, so that the lever 212 rotates clockwise against the urging force of the extension coil spring 214, and brings the magnetic head 210 into contact with the surface of the information recording unit 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 body 204 is fed to the left end position as shown in FIG. 14, the first limit switch Sw3 is opened, and the first limit switch Sw3 is opened.
From the motor control circuit 251 based on the signal from the
And the motor M is stopped, and the feeding of the cartridge is completed (step S104). The CPU sends a signal to the magnet control circuit 253 immediately after sending the motor stop signal to the motor control circuit 251,
The power supply to g is stopped. Thereby, the armature 21
5 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 to release the contact of the magnetic head 210 with the information recording unit 202A (step S105).

Next, the back cover 203 is closed (step S10).
6) Then, the back cover switch Sw1 is opened, and the 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, in 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 winding of the film has not reached one frame, the winding of one frame is in progress, or the total number of frames of the film is wound, and further winding is impossible in the middle. 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
When the back cover is opened after the rewinding is completed at 21, the back cover switch Sw1 is closed accordingly (step S1).
22) In response to the closing of the back cover switch Sw1, the electromagnet Mg is energized to bring the magnetic head 201 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 rightward in FIG. 14) together with the holder body 204 (step 124). When the feeding of the patrone is started, the first limit switch Sw3 is closed, and according to the closing of the switch Sw3, the number of used frames such as the total number of used frames or the number of photographed frames stored in steps S117 and S119. Information on the patrone 202
The information recording unit 202 is moved by the magnetic head 210 during the movement of
A is recorded in A (step S125).

Further, the cartridge 202 is sent out together with the holder body 204, and the second limit switch Sw4
Is opened, the motor M stops driving, and the feeding of the cartridge is completed (step S126). In response to the opening of the second limit switch SW4, the electromagnet Mg is energized again, 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. Release (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, and the patrone 202 is moved from the patrone chamber 201A. It is taken out (step S128). Patrone switch S
w2 is closed in response to the clockwise rotation of the locking member 205, and a series of operations from loading to unloading of the cartridge is completed.

On the other hand, if it is determined in step S107 that the loaded patrone is not an unused product, 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 blinked 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
Then, the motor M is driven according to the opening of the back cover step Sw1 without power supply, and the feeding of the cartridge 202 is started. (Step S133). Further, in this case, the sending is continued without re-recording the used information in the information recording unit 202A, and the second limit switch Sw4
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
When the patrone switch Sw2 is opened by pushing with a finger after removing the pod, the holder body 204 is sent to the left by driving the motor M, and the back cover 203 can be opened as shown in FIG. 14. When the patrone switch Sw2 is pushed again, The motor M rotates in the reverse direction and sends out the holder body 204 to the right, so that the patrone 202 can be attached to the holder body 204.

The information recording section 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 is a camera as shown in each of the publications. In the case of this camera, trimming information indicating whether or not there is a frame for which a trimming range has been 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.

[0076]

According to the present invention, before the movement of the patrone to the second position is completed, information can be detected from the information recording unit by the information detecting means, and when the movement of the patrone to the second position is completed. The detection of information from the information recording unit by the information detection unit becomes impossible, and the control unit causes the information detection unit to detect information from the information recording unit before the movement of the patrone to the second position is completed. In other words, in the configuration including the information detecting means which cannot detect the information from the information recording unit when the movement of the patrone to the second position is completed, the control means sets the information before the information detecting means cannot detect the information. Since the detecting means performs the information detection, the information detection can be accurately performed without losing the timing and losing the information detection.

[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 detecting 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

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI G03B 17/18 G03B 17/18 Z 17/24 17/24 17/30 17/30 (58) Fields surveyed (Int.Cl. ^7, DB name) G03C 3/00 571 G03C 3/00 572 G03C 3/00 599 G03B 7/24 G03B 17/18 G03B 17/24 G03B 17/30

Claims (8)

(57) [Claims] 1. An apparatus capable of handling a cartridge provided with an information recording section on which information is recorded and capable of detecting information from the information recording section, wherein the information recorded in the information recording section is The patrone is provided in the axial direction of the patrone, and moves the patrone in the axial direction from a first position to a second position different from the first position, and stops operation when the movement to the second position is completed. Moving means, before the movement of the patrone to the second position is completed, information can be detected from the information recording unit, and when the movement of the patrone to the second position is completed, the information from the information recording unit can be detected. An information detection unit that cannot detect information; and a control unit that causes the information detection unit to detect information from the information recording unit before the movement of the patrone to the second position is completed. When That cartridge information detection device. 2. The patrone information detecting device according to claim 1, wherein said control means also controls said operation of said moving means. 3. The patrone information detecting device according to claim 1, wherein the control unit detects the information while the patrone is moving from the first position to the second position. A patrone information detecting device for causing the means to detect information from the information recording unit. 4. The patrone information detecting device according to claim 1, wherein the information recording unit is a magnetic recording unit on which information is magnetically recorded. 5. The patrone information detecting device according to claim 1, wherein the information recording unit includes:
A patrone information detecting device in which a used signal or a photographed frame number signal is recorded. 6. The patrone information detecting device according to claim 1, wherein the patrone has a leader portion, and is inserted in a state where the leader portion is pulled out. Patrone information detection device. 7. The patrone information detecting apparatus according to claim 1, wherein said patrone is capable of extracting a film from said patrone which has been moved to said second position. 254) A patrone information detecting device comprising: 8. The patrone information detecting device according to claim 7, wherein the pull-out means is a film pull-out means of a camera capable of pulling out the film for photographing, and the first position is a position in which the patrone is drawn. A position in which the patrone is placed for insertion into the camera;
The patrone information detecting device is characterized in that the position is a position where the film can be pulled out by a film pulling means of the camera for the photographing.