JPH10186481A - Camera and film feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately cope with a situation in the case of failing in autoloading operation by judging the fed state of film fed from a film cartridge and driving the film in a rewinding direction by an amount equal to or more a film feeding driving amount in the case of judging that the fed state is not a specified state. SOLUTION: By driving a film supply spool provided in the film cartridge 16, a motor driving circuit 15 feeds the film F from the cartridge 16, and a decision means reads a bar code recorded on a data disk 17 integrally provided on the film supply spool and decides the fed state of the film F fed from the cartridge 16 by the circuit 15. According as the decision means decides that the fed state of the film is not the specified state, a microprocessor 1 drives a film supply means in the film rewinding direction by the amount equal to or more the film feeding driving amount by the circuit 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus such as a camera which can use a thrust cartridge for feeding a film from a film cartridge by driving a film supply member provided on the film cartridge.

[0002]

2. Description of the Related Art Conventionally, this type of thrust cartridge has been provided with a bar code disk which rotates integrally with a film supply spool of the cartridge, and a type in which this bar code disk is used for film feed control has been proposed. I have. Examples thereof include JP-A-4-316027, JP-A-4-324432, and JP-A-5-53.
189 publication.

Japanese Patent Application Laid-Open No. Hei 4-316027 discloses a technique in which a bar code disk signal is used in place of a perforation signal for feeding a film.
Japanese Patent Application Laid-Open No. 432-432 detects the success / failure of positioning of the first frame by using a rotation signal of a bar code disk. Japanese Patent Application Laid-Open No. 5-53189 discloses a film feeding method using a rotation signal of a bar code disk. Is used to detect the state of tension.

[0004]

However, in this type of thrust cartridge, the automatic loading operation of feeding the film from the film cartridge and winding the film around the film take-up spool to reach the first frame to the exposure position has failed. If the film is not properly rewound into the film cartridge, the film will remain in the cartridge and cannot be removed from the camera. There is a possibility that the film F cannot be fed or the film F may be damaged, but none of the above-mentioned conventional examples takes this point into consideration.

The present invention has been made in view of the above circumstances, and fails to perform an auto-loading operation using a thrust cartridge that feeds a film from the film cartridge by driving a film supply member provided in the film cartridge. An object of the present invention is to provide a camera and a film feeder that can appropriately deal with the case.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a driving means for feeding a film from a film cartridge by driving a film supply member provided on the film cartridge; Determining means for determining a feeding state of the film fed from the cartridge; and an amount equal to or more than a film feeding driving amount of the driving means according to the determining means determining that the feeding state of the film is not in a predetermined state. And a film feeder having an instruction means for driving the camera in the film rewinding direction.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
FIG. 2 is a circuit block diagram of the camera according to the embodiment.

In FIG. 1, reference numeral 1 denotes a microprocessor for controlling the entire camera, reference numeral 2 denotes a photometric circuit, reference numeral 3 denotes a distance measuring circuit, reference numeral 4 denotes a shutter control circuit, and reference numeral 5 denotes an aperture circuit. You.

Reference numeral 6 denotes a photometry / distance measurement start SW1 switch, and reference numeral 7 denotes a photographing operation start SW2 switch. These switches are turned on at the first and second strokes of the shutter release member. 8 is a main switch, 9 is a magnetic head drive circuit, 10 is a magnetic head, 11 is a cartridge chamber lid switch for detecting the open / close state of a lid of a cartridge chamber in which a film cartridge is loaded, and 12 is data of a film cartridge described later. A bar code information reading circuit for reading information on the disc, a display circuit 13 for giving a shutter time, an aperture value, the presence or absence of a film cartridge, a warning for taking out a film, a film rewind start (REW) switch 14, a reference numeral 15 A film supply spool which is a film supply means of the film cartridge 16 which is a thrust cartridge is driven in a film feeding direction to feed out the film F in the film cartridge from the film cartridge 16 and to feed the film F sent out to the film take-up spool 1. Wound up in,
Further, a motor driving circuit for driving the film supply spool of the film cartridge 16 in the film rewinding direction to rewind the film F into the film cartridge, and 17 is provided integrally with the film supply spool of the film cartridge 16, Is a rotating member serving as a barcode recording unit in which a barcode serving as an index is recorded on a surface that rotates with the rotation of, and will be referred to as a data disk (DD). Reference numeral 18 denotes a film perforation detection circuit, which includes, for example, a light projecting unit and a light receiving unit of a photo interrupter, and detects the presence or absence of film perforation. Reference numeral 20 denotes a lens driving circuit for focusing.

FIG. 2 is a view showing a film used in the camera of FIG.

In the figure, the data disk 17 provided on a film cartridge 16 for storing a film F
Information on the film F (for example, information on film sensitivity, maximum number of frames that can be photographed, and the like) is encoded and recorded by a barcode. Reference numeral 21 denotes a perforation that the film F has two per frame.

Next, the operation of the above configuration will be described with reference to the flowcharts of the microprocessor 1 shown in FIGS.

First, in step S110, when the main switch 8 is in the off state, other switches are not accepted and when the main switch 8 is turned on, the process proceeds to step S120. In S120, it is determined whether or not the auto-loading is to be performed when the film cartridge 16 is loaded and the lid of the cartridge chamber is closed.
The process proceeds to S400 if the process is to be performed.

When auto loading is not performed, S13
At 0, it is determined whether or not the REW switch 14 has been pressed,
If it is pressed, the process proceeds to S240, and if it is not pressed, S240
At 140, it is determined whether the SW1 switch 6 is on or off.

On the other hand, if the SW1 switch 6 is turned on in S140, a photometric value is obtained by the photometric circuit 2 in A150 and A / D converted. In S160, each of TV (shutter open time) and AV (aperture value) is determined. The value is determined based on a program diagram stored in advance therein. Then S1
At 70, distance measurement information is obtained by the distance measurement circuit 3, and based on the distance measurement information obtained at S180, the lens drive circuit 20
Drive the lens.

Thereafter, in S190, it is determined whether the SW2 switch 7 is on or off. S2 if SW2 switch 7 is on
At 00, the shutter control circuit 4 and the aperture control circuit 5 are operated to expose the film F. Then, in S210, one frame of the film F is wound by the motor drive circuit 15 and the internal film counter is incremented by 1 in S220.
At 230, it is determined whether or not the maximum number of frames that can be captured (read from the data disk 17 as described later) has been reached. If it has been reached, the process proceeds to S240, and if not, the process returns to S110.

At S240, the rewinding operation of the film F is started by the motor drive circuit 15, and when two perforations 19 of the film 16 are detected by the perforation detection circuit 18 at S250, the internal frame counter is decremented by 1 at S260. In S270, the number of frames is determined, and if not, the process returns to S250. On the other hand, if the number of frames is 0, the passage is detected by the perforation detection circuit 18 in S280.
At 90, after a predetermined time required for the leading end of the film to be completely rewound into the film cartridge 16 by the internal timer is measured at 90, the display of the use state of the film is displayed on the data disk 17 at a predetermined state (S300). In the case of rewinding halfway, "partially exposed" is set, and in the case of automatic rewinding after the maximum number of photographable frames has been shot, "all frames are exposed"), and the motor drive circuit 15 is stopped in S310. Then, the rewinding is completed, and the process returns to S110 after waiting until it is detected by the cartridge lid switch 11 that the lid of the cartridge chamber is opened.

Next, S400 to S710 in FIGS.
Is an auto-loading routine. S12
If it is determined that the automatic loading is to be performed in the process of 0, the motor drive circuit 15 rotates the film supply spool of the film cartridge in the rewind direction in S400, and recognizes the bar code start pattern of the data disk 17 in S410. In step S420, the barcode on the data disk 17 is read by the barcode information reading circuit, and the barcode data read in step S430 is stored in an internal memory. In step S440, the driving of the motor drive circuit 15 in the rewind direction is terminated. Then, in S450, the motor supply circuit 15 rotates the film supply spool of the film cartridge in the film feeding direction.
Next, in S455, the barcode information reading circuit 12
The rotation amount detection of the data disk 17 is started, and an internal perforation detection timer is reset in S460.
Then, in step S470, an internal data disk signal detection timer (DD timer) is reset and started. Then, in S480, the barcode information reading circuit 1
2, the presence / absence of a bar code signal change of the data disk 17 is detected. If there is a signal change, the data disk signal change detection timer is reset and started in S490. On the other hand, if there is no change in the bar code signal of the data disk 17, it is determined in S500 whether or not the data disk signal change detection timer has passed a predetermined time or more. S69 to be described later
0, if it is within the predetermined time, it is determined in S510 whether or not the perforation detection timer has elapsed for a predetermined time or more. If the predetermined time has elapsed, the flow proceeds to S610 described below, If it is within the predetermined time, S4
The operations from 80 to S520 are repeated until the perforation detection circuit detects in S520 that the leading end of the film has been fed out of the film cartridge. When it is detected that the leading end of the film has been fed from the film cartridge, the same operations as in S460 to S520 are performed until the position of the first frame is determined in S530 to S590. The positioning of the first frame includes the operation of detecting two perforations. After the positioning of the first frame is performed, the auto-loading operation by the motor drive circuit 15 is terminated in S600, and the preparation for photographing is completed.

On the other hand, when it is determined in S510 and S580 that the timer for detecting perforation has passed for a predetermined time or more, the film supply spool of the film cartridge 16 is rotating in the film feeding direction, but the film F is normal. Has not been sent to S61
In step S620, the rotation of the film supply spool of the film cartridge 16 in the film feed direction by the motor drive circuit 15 is stopped, and a warning is displayed in step S620 by blinking a specific portion of the display circuit 13. And S6
At 40, a rotation amount larger than the rotation amount K of the data disk 17 until the timer for perforation detection read by the bar code information reading circuit 12 times out is set. I do. S6
At 50, the film supply spool of the film cartridge is rotated in the rewind direction by the motor drive circuit 15,
After detecting the rotation by the rotation K set in S640 in 660, the use state of the film is set in S670 in the same manner as in S300, the motor drive circuit 15 is stopped in S680, and the rewinding ends. Thereafter, the process proceeds to S320.

Here, when the film is not normally fed, the film supply spool of the film cartridge 16 is rotated in the rewind direction by a rotation amount larger than the rotation amount of the data disk 17 until the timer for detecting perforation expires. The reason why the film is rotated to terminate the rewinding is to rotate the film supply spool of the film cartridge 16 in the film feeding direction and wind the film slack inside or outside the cartridge around the film supply spool. This is done by doing
If the film F remains out of the cartridge 16 and cannot be removed, or if the film F jams in the cartridge 16 and the feeding operation cannot be performed again, or the film F is damaged. Can be prevented.

In this case, even if the film supply spool of the film cartridge is not necessarily rotated in the rewinding direction by a rotation amount larger than the rotation amount of the data disk 17 until the timer for detecting the perforation expires, at least the film can be removed. What is necessary is just to rotate the film supply spool of the film cartridge in the rewinding direction by the amount that is completely rewound into the film cartridge.

On the other hand, when it is determined in S500 and S570 that the timer for detecting a change in the data disk signal has passed a predetermined time or more, the rotation of the film supply spool of the film cartridge 16 in the film feeding direction itself is normally performed. If not, the process proceeds to S690, in which the rotation of the film supply spool of the film cartridge 16 in the film feeding direction by the motor drive circuit 15 is stopped, and a warning display is performed in S700 as in S620. Thereafter, in step S710, the process waits until the REW switch 14 is pressed. If the switch is pressed, the process proceeds to step S720, where the motor supply circuit 15 rotates the film supply spool of the film cartridge 17 in the rewind direction, and proceeds to step S280.

(Second Embodiment) Next, a second embodiment of the present invention will be described.

FIGS. 6 to 8 are flowcharts of the microprocessor 1 of FIG. 1 according to the second embodiment of the present invention. In the flowcharts of FIGS. 6 to 8, FIGS.
The same processes as those in the flowchart of FIG. 1 are denoted by the same step numbers, and the description thereof will be omitted.

When the REW switch 14 is pressed in S710, the film supply spool of the film cartridge is rotated in the rewinding direction by the motor drive circuit 15 in S720, and set as a timer for detecting a data disc signal change in S730. After continuing the rewinding for a predetermined time longer than the predetermined time, the process proceeds to S290.

In the present embodiment, the rotation of the film supply spool of the film cartridge 16 in the rewinding direction for a longer time than the time until the timer for detecting a change in the data disk signal times out is determined by the film supply of the film cartridge 16. This is because the spool is rotated in the film feeding direction to take up the slack of the film inside or outside the cartridge around the film supply spool. In this manner, the film F is discharged from the cartridge 16. That the film cartridge 16 cannot be taken out due to the
Can be prevented from being jammed in the cartridge 16 so that the feeding operation cannot be performed again, or the film F can be damaged.

(Third Embodiment) Next, a third embodiment of the present invention will be described.

FIGS. 9 to 11 are flowcharts of the microprocessor of FIG. 1 according to the third embodiment of the present invention. In the flowcharts of FIGS. 9 to 11, the same processes as those in the flowcharts of FIGS. 3 to 5 and 6 to 8 are denoted by the same step numbers, and description thereof will be omitted. Hereinafter, different processes will be described.

At S480, a signal change of the data disk 17 is detected. If there is a change, the timer for detecting the change of the data disk signal is reset and started at S490. It is determined whether or not has reached the predetermined value N. If it has not reached the predetermined value N, the process proceeds to S510, and if it has reached N, the process proceeds to S610.
Proceed to. Similarly, when a signal change of the data disk 17 is detected in S550, if there is a change,
After resetting and starting the timer for detecting the data disk signal change at 60, the data disk 1 is reset at S565.
It is determined whether or not the rotation amount of 7 has reached the predetermined value N. If the rotation amount has not reached the predetermined value N, the process proceeds to S580, and if it has reached N, the process proceeds to S610.

In the present embodiment, the amount of rotation of the data disk 17 is determined (S495, S565) in S5.
10. Complements the timer for perforation detection in S580 to reliably determine that the film is not normally transmitted, and at the same time, it is possible to determine earlier that the film is not normally transmitted. And then
The purpose is to enable quick response.

(Correspondence between the Invention and the Embodiment) In the above embodiment, the motor drive circuit 15 serves as the drive means of the present invention, and the bar code information reading circuit 12 or the perforation detection circuit 18 serves as the determination means of the present invention. In addition, the microprocessor 1 corresponds to an instruction unit of the present invention, and the display circuit 13 corresponds to a warning unit of the present invention.

The above is the correspondence between each configuration of the embodiment and each configuration of the present invention. However, the present invention is not limited to the configuration of these embodiments, and the functions described in the claims or It goes without saying that any configuration may be used as long as the function of the configuration of the embodiment can be achieved.

For example, in the above embodiment, the film supply spool of the film cartridge is rotating in the film feeding direction. However, if it is detected that the film is not normally fed, a timer for detecting perforation is used. The film supply spool of the film cartridge is rotated in the rewind direction by more than the amount of rotation of the data disk until the time expires, but this is longer than the time until the timer for perforation detection expires. The film supply spool of the film cartridge may be rotated in the rewind direction.

In the above embodiment, when it is detected that the rotation itself is not normally performed in the film feeding direction of the film supply spool of the film cartridge, the timer for detecting the change in the data disk signal is timed. The film supply spool of the film cartridge is rotated in the rewind direction for a longer time than the time required for the rotation of the data disk. The film supply spool of the quantity film cartridge may be rotated in the rewind direction.

Further, in the above-described embodiment, the feeding and rewinding of the film from the film cartridge are performed by the same drive circuit. However, the present invention can be applied even if it is performed by separate drive means. It is.

The present invention is applicable to cartridges other than the cartridges described in the above embodiments, cartridges having image recording media other than film, and other types of cartridges.

Further, the software configuration and the hardware configuration of the above embodiment can be replaced as appropriate.

The present invention also relates to each of the above embodiments or
You may combine these technical elements as needed.

The present invention also relates to a case where the whole or a part of the configuration of the claim or the embodiment forms one device or is combined with another device. It may be an element constituting the device.

The present invention is also applicable to various forms of cameras such as single-lens reflex cameras, lens shutter cameras, and video cameras.
Further, the present invention can be applied to optical devices and other devices other than cameras, and further to devices applied to the cameras, optical devices and other devices, or elements constituting these devices.

[0042]

As described above, according to the present invention, when the auto-loading operation using the thrust cartridge for feeding the film from the film cartridge by driving the film supply member provided on the film cartridge fails. In addition, a camera or a film feeder capable of appropriately coping with the problem can be provided.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of a camera according to an embodiment of the present invention.

FIG. 2 is a view showing a film used in the camera shown in FIG. 1;

FIG. 3 is a flowchart of the microprocessor shown in FIG. 1;

FIG. 4 is a flowchart of the microprocessor of FIG. 1 following the flowchart of FIG. 3;

FIG. 5 is a flowchart of the microprocessor of FIG. 1 following the flowchart of FIG. 4;

FIG. 6 is a flowchart showing another embodiment of the microprocessor of FIG. 1;

FIG. 7 is a flowchart of the microprocessor of FIG. 1 following the flowchart of FIG. 6;

FIG. 8 is a flowchart of the microprocessor of FIG. 1 following the flowchart of FIG. 7;

FIG. 9 is a flowchart showing another embodiment of the microprocessor of FIG. 1;

FIG. 10 is a flowchart of the microprocessor of FIG. 1 following the flowchart of FIG. 9;

FIG. 11 is a flowchart of the microprocessor of FIG. 1 following the flowchart of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Microprocessor 12 Bar code information reading means 13 Display circuit 15 Motor drive circuit 18 Perforation detection circuit

Claims (13)

[Claims] 1. A driving means for feeding a film from a film cartridge by driving a film supply means provided on a film cartridge; a judging means for judging a feeding state of a film sent from the film cartridge by the driving means; Instruction means for driving the film supply means in the film rewind direction by an amount equal to or more than the film feeding drive amount of the drive means in accordance with the determination means determining that the film feeding state is not in the predetermined state. Features camera. 2. The camera according to claim 1, wherein the determination unit determines an operation state of an index that operates integrally with the film supply unit. 3. The camera according to claim 1, wherein the determination unit determines a rotation state of an index that rotates integrally with the film supply unit. 4. The camera according to claim 1, wherein said determination means determines a time of a film feeding drive of said drive means. 5. The camera according to claim 1, wherein the determination unit determines a moving state of the film sent from the cartridge. 6. The camera according to claim 1, wherein the determination unit determines a moving state of the perforation of the film. 7. The camera according to claim 1, wherein said instruction means sets an operation amount of an index operating integrally with said film supply means as a film feed drive amount of said drive means. 8. The camera according to claim 1, wherein said instruction means sets a rotation amount of an index which rotates integrally with said film supply means as a film feed drive amount of said drive means. 9. The camera according to claim 1, wherein the instruction unit sets a time of the film feeding drive of the driving unit as a film feeding driving amount of the driving unit. 10. The apparatus according to claim 1, wherein said instruction means drives said driving means in a film rewinding direction.
The described camera. 11. The camera according to claim 1, wherein the determination unit determines that the film is not in a predetermined state from a state in which the film has not moved a predetermined amount in a predetermined time. 12. The apparatus according to claim 1, further comprising a warning unit for issuing a warning in accordance with the determination unit determining that the film feeding state is not in a predetermined state.
The described camera. 13. A driving means for feeding a film from the film cartridge by driving a film supply means provided on the film cartridge; a judging means for judging a feeding state of the film sent from the film cartridge by the driving means; Instruction means for driving the film supply means in the film rewind direction by an amount equal to or more than the film feeding drive amount of the drive means in accordance with the determination means determining that the film feeding state is not in the predetermined state. Characteristic film feeder.