JPH10293337A - Reader of film cartridge information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control the stoppage position of a disc with a single sensor by providing a travel means for moving the sensor between a first position and a second position respectively faced to the disc. SOLUTION: A reader 3 is formed out of a rotatably mounted gear 31, an FPC 32 fitted to the gear 31, a sensor 33 mounted on the FPC 32, and a stationary brush 34 for coming in contact with switch patterns 32a to 32c formed on the FPC 32. The gear 31 is rotatably driven via a gear train 35 gearing therewith. In this case, the gear 31 is rotated and stopped, upon the detection of contact between a contact piece 34a and the pattern 32a, thereby keeping the sensor 33 faced to a window 13a. Similarly, the gear 31 is rotated and stopped when a contact piece 34b and the pattern 32b come in contact with each other, thereby keeping the sensor 33 faced to a window 13b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film cartridge information reading apparatus for reading bar code information formed on a disk which rotates integrally with a film winding shaft of a film cartridge.

[0002]

2. Description of the Related Art There is known a film cartridge capable of opening and closing a film entrance with a light shielding door. The film cartridge is provided with a disk that rotates integrally with the film take-up shaft, and bar code information formed on the disk is read by a film cartridge information reading device built in a camera or the like. IS for barcode
Various information of the film such as O sensitivity is recorded,
The direction of the disk itself carries the information of the film. That is, it is designed to display the presence / absence of exposure of the film, the presence / absence of development, and the like according to the direction of the disk. Therefore, when taking out the film cartridge from the camera, it is necessary to turn the disk in an appropriate direction.

In a conventional apparatus, after a film cartridge is loaded in a camera or the like, a bar code is scanned by a sensor mounted opposite to the disk by rotating the disk, and information of the bar code is read, and the information before loading the camera is loaded. The direction of the disk is detected. Further, by controlling the stop position of the disk based on a signal detected via the sensor, the disk of the film cartridge taken out of the camera is directed in an appropriate direction.

[0004]

However, the film take-up shaft of the film cartridge is provided in conjunction with the opening / closing mechanism of the light-shielding door of the film cartridge. When the light-shielding door is in the closed position, the film take-up shaft is provided. Can not be rotated. Therefore, when reading the bar code information or obtaining information such as whether or not the film has been exposed (detecting the direction of the disk), once the light shielding door of the film cartridge is opened, the film winding shaft is driven. The rotation of the disk requires complicated operation and takes time, and the film may be erroneously exposed during this time.

[0005] The film cartridge is provided with two windows for exposing the disk. The disk is oriented in such a manner that the bar code faces the respective windows in accordance with whether the discharged film cartridge is exposed or not. Must be stopped. Therefore, in a conventional device having a fixed sensor, it is necessary to use two sensors corresponding to the positions of the windows.

[0006] A first object of the present invention is to provide a film cartridge information reading apparatus capable of preventing exposure of a film. It is a second object of the present invention to provide a film cartridge information reader capable of controlling the direction of a disk with a single sensor.

[0007]

The present invention will be described with reference to FIGS. 1 and 2, which show an embodiment of the present invention.
Bar code 12 formed on a disk 12 that rotates integrally with the
This is applied to a film cartridge information reader that reads a. The sensor 33 is provided to face the disk 12 and scans the bar code 12a to read the bar code 12a. The sensor 33 is moved to the film cartridge 1 so that the sensor 33 faces the disk 12. The first position and the second opposite the disk 12
The above-mentioned object is achieved by providing the moving means 31 for moving between the positions. According to a second aspect of the present invention, in the film cartridge information reading apparatus according to the first aspect, the first position and the second position are notch positions 13a of the case 13 of the film cartridge 1 where the disk 12 is exposed, respectively. 13b.
The invention described in claim 3 is applied to a film cartridge information reading device that reads a bar code 12a formed on a disk 12 that rotates integrally with a film take-up shaft 11 of the film cartridge 1. And the barcode 12a
And the bar code 12a is scanned by the sensor 33 (52) by moving the sensor 33 (52) with respect to the disk 12 that is not rotating. By providing the scanning means 31 (51), the above object is achieved. According to a fourth aspect of the present invention, in the film cartridge information reading apparatus according to the third aspect, the sensor 33 is moved to the first position facing the disk 12 by moving the sensor 33 with respect to the film cartridge 1. A scanning unit 31 for moving the scanning unit 31 between the first position and the second position.
The bar code is scanned by the sensor 33 at each of the positions. According to a fifth aspect of the present invention, in the film cartridge information reading device according to the fourth aspect, the first position and the second position are respectively formed by notch positions 13a of the case 13 of the film cartridge 1 in which the disc 12 is exposed. 13b. According to a sixth aspect of the present invention, in the film cartridge information reading apparatus according to any one of the third to fifth aspects, the scanning means 51 is an interlocking mechanism 47 which is interlocked with the lid 2A of the cartridge chamber for accommodating the film cartridge 1. , 48, and an elastic body 50 in which the acting force is accumulated via the interlocking mechanisms 47, 48. The scanning means 51 is based on the acting force accumulated in the elastic body 50 with the opening / closing operation of the lid 2A of the cartridge chamber. Scans the bar code 12a by moving the sensor 52.

[0008] In the section of the means for solving the above-mentioned problems, which explains the configuration of the present invention, the drawings of the embodiments of the present invention are used to make the present invention easier to understand. However, the present invention is not limited to this.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment Hereinafter, a first embodiment of a film cartridge information reading apparatus according to the present invention will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a film cartridge loaded in a cartridge chamber of a camera, 2 denotes a cartridge lid which rotates about a rotation shaft 2a to open and close the cartridge chamber, and 3 denotes a bar code of the film cartridge 1 for reading a bar code. Reader.

As shown in FIG. 1, the film cartridge 1 is provided with a disk 12 which rotates integrally with a film take-up shaft 11 for winding a film. The disk 12 has a window 13a opened in a case 13 of the film cartridge 1 and Window 1
3b is partially exposed. In FIG. 1, reference numeral 14 denotes a light-shielding door for opening and closing the entrance of the film.
The opening / closing operation is performed in accordance with the rotation of the fifth rotation. Film winding shaft 1
1 is configured so that the rotation of the film take-up shaft 11 is permitted only when the light-shielding door 14 is at the open position, and the rotation of the film winding shaft 11 is allowed. When in the closed position, the rotation of the film winding shaft 11 is prohibited.

The reading device 3 includes a gear 31 rotatably provided, an FPC 32 attached to the gear 31,
The sensor 33 includes a sensor 33 mounted on the C32 and a fixed brush 34 that contacts the switch patterns 32a to 32c formed on the FPC 32. A through hole (not shown) that penetrates the FPC 32 and the gear 31 is provided at a mounting portion of the sensor 33, and the sensor 33 is inserted through the through hole.
From the disk 12 can be transmitted and received. A circular hole 3 through which a driving member for driving the film winding shaft 11 of the film cartridge 1 penetrates is formed in the center of the gear 31.
1a is open. In FIG. 1, the distance between the gear 31 and the film cartridge 1 is wider than it actually is.

The gear 31 is a gear train 35 meshed with the gear 31.
Is driven to rotate. The three contact pieces 34a to 34c of the fixed brush 34 are provided so as to be able to come into contact with the switch patterns 32a to 32c formed on the FPC 32. When the contact piece 34a comes into contact with the pattern 32a, the sensor 33 comes into contact with the window 13a. When the piece 34b comes into contact with the pattern 32b, the sensor 33 is arranged so as to face the window 13b.

When the contact piece 34a comes into contact with the pattern 32a, the pattern 32a and the pattern 32c are short-circuited via the fixed brush 34 (contact pieces 34a and 34c), and the potential of the pattern 32a changes. This change in potential is caused by the connection 32
It is guided to a control device (not shown) connected via d and detected. The contact between the contact piece 34b and the pattern 32b is configured to be similarly detected.

Therefore, in the first embodiment, the driving of the gear 31 is stopped when the contact between the contact piece 34a and the pattern 32a is detected by rotating the gear 31, so that the sensor 33 and the window 13a are connected. Can be opposed. Similarly, by stopping the driving of the gear 31 when the contact between the contact piece 34b and the pattern 32b is detected by rotating the gear 31, the sensor 33 and the window 13b can be opposed to each other.

When the film cartridge 1 is not exposed,
The bar code pattern 12a formed on the disk 12 is
It is necessary to stop the disk 12 at a position facing 3a and take out the film cartridge 1. When the film cartridge 1 has been exposed, the barcode pattern 12
It is necessary to stop the disk 12 at the position where a faces the window 13b and take out the film cartridge 1.

In the camera of the first embodiment, the gear 31
Is rotated, the sensor 33 can be made to face both the window 13a and the window 13b. For example, when the film is not exposed, the sensor 33 is moved to the window 13a.
The disk 12 is rotated in a state where the disk
If the disk 12 is stopped when a bar code signal is detected, the disk 12 can be stopped at a predetermined position (angle). When the film has been exposed, the same operation may be performed with the sensor 33 facing the window 13b.

On the other hand, when a new film cartridge 1 is loaded in a camera, it is necessary to determine whether the film cartridge is unexposed or has been exposed. Then, by rotating the gear 31, the sensor 3
3 can be scanned with respect to the disk 12, so that there is no need to open the light shielding door 14 prior to the discriminating operation.

That is, in the first embodiment, since the position of the sensor 33 can be detected via the switch patterns 32a to 32c, the sensor when the signal output of the bar code 12 is obtained with the rotation of the gear 31 is obtained. The position of 33 can be known. Therefore, if the sensor 33 faces the window 13a when the barcode 12a is detected, it can be determined that the loaded film cartridge 1 has not been exposed. On the other hand, if the sensor 33 is facing the window 13b at this time, it can be determined that the loaded film cartridge 1 has been exposed.

As described above, in the first embodiment, the sensor 33 can face both the windows 13a and 13b, so that when the film cartridge 1 is taken out, one sensor (sensor 33) is used. Disk 1
2 can control the stopping direction.

The loaded film cartridge 1
Can be determined without rotating the disk 12, that is, without opening the light-shielding door 14, so that the film is not inadvertently exposed. In the first embodiment, when the loaded film cartridge has been exposed, it is possible to determine that the film cartridge has not been exposed without opening the light shielding door 14, and it is sufficient to discharge the film cartridge 1 as it is. Accidents of exposing the (photographed) film can be reliably prevented.

Second Embodiment A film cartridge information reader according to a second embodiment of the present invention will be described below with reference to FIG.

As shown in FIG. 2, a gear 41 is attached to the rotating shaft member 2b which rotates integrally with the cartridge lid 2A, and a gear train including a gear 42 and a gear 43 is engaged with the gear 41. . A rod 44, which is a rotating shaft of the gear 43, is attached to the gear 43. The rod 44 can be connected to a rod 46 via a one-way clutch 45. Further, a pinion gear 47 is attached to the rod 46, and the pinion gear 47 is engaged with a rack 48.

A locking claw 48a is formed on the rack 48,
The locking claw 48a can be locked by a fixed claw 49. A spring 5 is provided between the rack 48 and the camera body.
0 is interposed.

A disk-shaped rotating member 51 is meshed with the rack 48, and a circular hole 51a for opening a driving member for driving the film winding shaft 11 of the film cartridge 1 is opened in the rotating shaft portion of the rotating member 51. doing. A sensor 52 for reading the barcode 12 a is attached to the rotating member 51 so as to face the disk 12 of the film cartridge 1. The light emission and reception of the sensor 52 can reciprocate between the sensor 52 and the disk 12 through an opening (not shown) formed in the rotating member 51. It should be noted that in FIG.
The distance between the film cartridge 1 and the film cartridge 1 is wider than it actually is.

In FIG. 2, a rod 54 slidably provided in a vertical direction is urged downward by an unillustrated urging spring. The rod 54 is provided with a projection 54a that comes into contact with a contact piece of a switch 55 fixed to the camera body, and a connecting member 56 that engages with the rod 46 is mounted via a mounting member 54b. The connecting member 56 engages only with the rod 46 in the vertical direction,
It does not prohibit the rotation of.

The operation of the film cartridge information reading apparatus according to the second embodiment having the above-described structure will now be described.

As the cartridge lid 2A is opened, the rotating power of the rotating shaft member 2b is changed to the gears 41 to 43 and the rod 44.
Is transmitted via Further, since the rod 54 is slid downward in FIG. 2 by the urging force and the clutch 45 is in a meshed state, this rotational power is transmitted to the pinion 47 via the clutch 45 and the rod 46. As the cartridge lid 2A is opened, the pinion 47 rotates clockwise in FIG. 2, so that the rack 48 moves in the B direction while stretching the spring 50.

When the cartridge lid 2A reaches the open position, the locking claw 48a rides over the fixed claw 49 due to elastic deformation, and the locking claw 48a is locked by the fixed claw 49. Therefore, even if the hand is released from the cartridge lid 2A, the rack 4
8 remains stopped at the Q position in FIG.

The film cartridge 1 is set in the cartridge chamber.
Is loaded and the cartridge lid 2A is closed.
4 rotates in the opposite direction to the opening operation, the clutch 45 does not transmit the rotational force, and the rack 48 remains stopped at the Q position. When the cartridge lid 2A is further closed, FIG.
The lower end 54c of the rod 54 is in the cartridge lid 2A.
, And the rod 54 is pushed upward. Then, since the contact piece 55a of the switch 55 rises with the rise of the projection 54a, the contact piece 55a and the contact piece 55b are separated, and the switch 55 is turned off. The turning off of the switch 55 is detected by a control device (not shown), and the sensor 52 starts operating.

After the switch 55 is turned off, the cartridge lid 2A is further closed, and the mounting portion 54b of the rod 54 is
The rising of the connecting member 56 attached to the
Rises and the clutch 45 is disengaged. The rod 54
The upper end 54d pushes the locking claw 48a upward, so that the engagement between the locking claw 48a and the fixed claw 49 is released.

When the locking claw 48a is released, the rack 48 at the position Q moves in the direction A by the urging force of the spring 50. The rotating member 51 meshed with the rack 48 is
Rotates counterclockwise in FIG. 2 with the movement of.
While the rack 48 moves to the P position, the sensor 52 at the R position moves to the S position.

As shown in FIG. 2, when the sensor 52 moves from the R position to the S position, the sensor 52
Since the disk 12 exposed from the position a is scanned, it is possible to determine whether or not the bar code 12a has come to the position of the window 13a, that is, whether or not the film has been exposed. For example, in FIG. 2, since the bar code 12a is located at the position of the window 13a, the signal of the bar code 12a is output while the position sensor 52 moves from the R position to the S position. Can be determined.

In the second embodiment, the direction of the disk 12 of the loaded film cartridge 1 can be determined without rotating the disk 12, that is, without opening the light-shielding door 14, so that the film can be exposed carelessly. I won't. When the loaded film cartridge 1 has been exposed, it can be determined that the film cartridge 1 has not been exposed without opening the light-shielding door 14, and it is sufficient to discharge the film cartridge 1 as it is. Accidental exposure can be reliably prevented.

[0035]

According to the present invention, the sensor is moved between the first position facing the disk and the second position facing the disk by moving the sensor with respect to the film cartridge. Since the moving means for moving the disk is provided, the stop position of the disk can be controlled by one sensor. According to the third aspect of the present invention, since the bar code is scanned by the sensor by moving the sensor with respect to the non-rotating disk, the sensor can be used without opening the light blocking door of the film cartridge. Bar codes can be scanned, and exposure of the film can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a film cartridge information reader according to the present invention.

FIG. 2 is a perspective view showing a second embodiment of the film cartridge information reader according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Film cartridge 11 Film winding shaft 12 Disk 12a Barcode 13 Case 13a Window 13b Window 31 Gear 33 Sensor 47 Pinion 48 Rack 50 Spring 51 Rotating member 52 Sensor

Claims (6)

[Claims] 1. A film cartridge information reading device for reading a bar code formed on a disk that rotates integrally with a film take-up shaft of a film cartridge, wherein the information is provided to face the disk and scans the bar code. By moving the sensor with respect to the sensor reading the bar code and the film cartridge, the sensor is moved between a first position facing the disk and a second position facing the disk. A film cartridge information reading device, comprising: moving means. 2. The film cartridge according to claim 1, wherein the first position and the second position respectively correspond to cutout positions of a case of the film cartridge where the disc is exposed. Information reader. 3. A film cartridge information reading device for reading a bar code formed on a disk that rotates integrally with a film take-up shaft of a film cartridge, comprising: a sensor for reading the bar code information by scanning the bar code; Scanning means for scanning the bar code with the sensor by moving the sensor with respect to a non-rotating disk. 4. A moving means for moving the sensor between a first position facing the disk and a second position facing the disk by moving the sensor with respect to the film cartridge. 4. The film cartridge information reading apparatus according to claim 3, wherein the scanning unit scans the barcode with the sensor at each of the first position and the second position. 5. The film cartridge according to claim 4, wherein the first position and the second position respectively correspond to cutout positions of the case of the film cartridge where the disc is exposed. Information reader. 6. The scanning means includes an interlocking mechanism interlocking with a lid of a cartridge chamber for accommodating the film cartridge, and an elastic body that accumulates an acting force through the interlocking mechanism. 6. The bar code according to claim 3, wherein the scanning unit scans the bar code by moving the sensor based on the acting force accumulated in the elastic body in accordance with the opening / closing operation. Film cartridge information reader.