JPH04180047A - Film feeder for camera - Google Patents

Abstract

PURPOSE:To prevent a film top end part from being carelessly rolled up with the operation of an user by inhibiting the operation of a manual rewinding when the automatic loading of a film is not normally carried out. CONSTITUTION:When a judging means judges the completion of the automatic loading of the film, manual rewinding impossible information stored in a storage means is switched to manual rewinding possible information. The film is set to a camera, a rear cover is closed, and a releasing button is depressed to carry out the automatic loading of the film. When the automatic loading is not normally carried out, transferring to a prescribed step is carried out, and the operation of a manual rewinding means is inhibited. Thus, the occurrence of the careless rolling up of the film top end part is prevented by the operation of the user.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a film feeding device for a camera that is capable of automatically loading film.

[Prior Art] Some cameras are equipped with a film feeding device that can automatically load film. In such a camera, for example, when a film is inserted into the camera and the back cover is closed, the take-up spool rotates to automatically load a predetermined amount of film and make it ready for shooting.

In addition, even if the user accidentally opens the camera back during shooting and closes it again, the camera automatically loads a predetermined amount of film and feeds the exposed portion of the film, ensuring that there are no mistakes in shooting. What is done is done.

[Problems to be Solved by the Invention] By the way, autoloading is a type in which a friction member is provided on the take-up reel and the film is wound using the frictional force, or a claw is provided in the take-up reel and the perforation of the film is hooked with the claw. For example, when you set the film in the camera and close the back cover, or after closing the back cover and operate the resourse button, the take-up spool rotates and its claws roll the film. With the type that engages with the perforation at the tip, the user may not be using the film properly, and the take-up spool claw may not engage the perforation, resulting in an autoload error. In this case, either the back cover is opened and the film is properly set again, or the user may press the rewind button by mistake, causing the leading end of the film to be wound up in the cartridge, making it unusable.

Therefore, if a film autoload error occurs, rewinding the film may be prohibited. However, during shooting, the user accidentally opens the back cover, and when the back cover is closed again, the film may get stuck or become stretched when autoloading a predetermined amount. In this case, if rewinding of the film is prohibited, the user will have to pull out the film by hand, which may damage the film or other parts of the camera.

This invention solves and improves this problem, and it prevents the leading end of the film from being accidentally wound into the cartridge due to an autoload error, and also makes it easier to operate the film when tensioning the film. The purpose is to provide a feeding device.

[Means for Solving the Problems] In order to solve the above-mentioned problems, a film feeding device for a camera according to the present invention includes an autoloading device, a determining device for determining whether autoloading is completed, and a device that disables manual rewinding. storage means for storing information or manual rewindable information; and a storage means for allowing operation of the manual rewinding means if the information stored in the storage means is the manual rewindable information; and a manual rewind means for prohibiting the operation of the manual rewind means in the case of unrewindable information, and stores the manual rewind impossible information in the storage means before starting autoloading,
If the determining means determines that autoloading has been completed, the manual rewind impossible information stored in the storage means is switched to the manual rewind possible information.

[Function] In this invention, after setting film in the camera and closing the back cover, the film is automatically loaded. Manual rewind operation is prohibited when this autoload is not performed normally, and the leading end of the film is prevented from being inadvertently wound up by the user's operation.

Also, autoloading is performed when the back cover is opened and then closed again, and if tension is detected at this time, autoloading has already been performed, so manual rewind operation is allowed. Either rewind the film to remove the film tension and enable autoloading again, or open the back cover and remove the film.

[Example] Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

1 to 7 show a camera to which the present invention is applied; FIG. 1 is a front view of the camera, FIG. 2 is a right side view of the same, and FIG.
4 is a top view of the same, FIG. 5 is a bottom view of the same, FIG. 6 is a rear view of the same, and FIG. 7 is a plan view of the liquid crystal display section.

The camera body camera has a main body 1, a back M2, and a battery M3, and the back M2 and battery M3 are attached to the main body 1 so as to be openable and closable. The back M2 is opened by operating the back cover release button 4 in the direction of the arrow a, and the battery cover 3 is opened by operating the battery cover 3 in the direction of the arrow A. A lithium main battery is housed in the main body 1 in the battery M3 portion, and the main body 1 is further provided with an auxiliary battery that serves as a backup power source for displaying the liquid crystal and storing information related to photography.

A strap attachment part 5 is provided on the right side of the camera body 1, and a tripod attachment part 6 is provided on the bottom of the body 1.

A grip convex portion 1a is formed on the front right side of the camera body 1, and a grip concave portion 2a is also formed on the upper right side of the back cover 2, making it easier to grip the camera during photographing. Furthermore, a film confirmation window 7 is formed on the back M2, so that the film in the cartridge chamber can be directly confirmed visually.

This camera is based on Japanese Patent Application Laid-open No. 1-21, which the same applicant previously applied for.
A known film feeding mechanism as shown in FIG. 4 of No. 7441 is provided to automatically wind up and rewind the film. Further, when the back M2 is opened, a film is set in the main body 1, the back cover 2 is closed, and the release button S1 is pressed, autoloading is performed and, for example, four sheets are fed, and the film returns to the initial state. Further, by pressing the rewind button S2, it is possible to rewind the film halfway.

A photographic lens 8 is provided in the center of the main body 1, and this photographic lens 8 is covered with a barrier 9 to protect the photographic lens 8. The barrier 9 is opened when the barrier button S4 is moved in the direction of arrow C, and the release is locked when the barrier button S4 is closed.

This camera is equipped with a shutter drive device and a shutter operation warning device, a vehicle speed Pino λ Indian shutter is used as the shutter, and a DC motor is used as the drive source for the shutter motor.

A release button S1, a rewind button S2, a selfie button S3, and a liquid crystal display section 11 are provided at the top of the main body 1.

As shown in FIG. 7, the liquid crystal display section 11 has a film counter 110, a battery display 111, a self display 112,
A strobe display 113 is also provided. The film counter 110 adds a count value when loading a film and performs a photographing operation by operating the release button S1, and subtracts the count value when rewinding the film. When the main battery runs out, the central portion 111a of the battery display 111 turns off, and the battery display only shows the outer shape. When the self button S3 is pressed, the self display 112 lights up to indicate that the self mode has been selected. The center part of the strobe display 113 is not displayed while the strobe is being charged, and the center part is displayed when charging is completed.

On the front side of the camera body 1, there is an i located above the photographic lens 8.
ll Light window 12, finder 13 and selfie LED 1
4 are provided. This finder 13 is an Arvada light frame see-through finder, and the main body 1
An eyepiece 15 of a finder 13 is provided on the back side of the camera. Further, a strobe window 16 is provided on the left side of the camera body 1, and this strobe window 16 is arranged vertically and separated from the photographic lens 8 to prevent strobe light emission from adversely affecting photographing.

Camera control circuit FIG. 8 is a control circuit diagram of a camera to which the present invention is applied, FIG. 9 is a detailed diagram of a battery voltage check circuit, and FIG. 10 is a detailed diagram of a film motor driver circuit.

The control circuit of this camera includes a CPU 20, a drive circuit unit 21, a strobe circuit 22, and a liquid crystal display section 11. CPU2'0 has a diode D1 from the main battery E1.
A driving voltage is supplied to the CPU 20 via a diode D2 and an auxiliary battery E2 connected in parallel, and an auxiliary power supply is supplied to the CPU 20. A drive voltage is directly applied to the drive circuit unit 21 and the strobe circuit 22 from the main battery E1. The CPU 20 drives the liquid crystal display section 11, and also drives the drive circuit unit 21 and strobe circuit 22.

The CPU 20 includes a release button S1, a rewind button S2, a self button S3, a barrier button S4. Synchro switch S5. A back cover switch S6 and a film transfer detection switch S7 are connected.

The drive circuit unit 21 includes a battery voltage check circuit 210.
, a photometric circuit 211 and a driver circuit 212. The battery voltage check circuit 210 operates and outputs a control signal from the output terminal CPU-CTL of the CPU 20, and this output is inputted to the input terminal cpU-BC of the CPU 20, and the battery voltage is detected at this input terminal. Check the voltage. Furthermore, by setting a film in the photometry circuit 211, film information is manually input from the terminal DX, and photometry information is also input from the photometry element CdS, and this film information and photometry information are input to the input terminal CPU-CD5 of the CPU 20. The exposure amount is set based on this information, and the aperture is changed using this information. Furthermore, the driver circuit 212 connects the CPU 20 output terminal CPU-LED.
, CPU-FMl, C'PU-FM2. CPU-3M,
Based on the control signal from the CPU-AM, the film motor FM, shutter motor SM, aperture magnet AM, and self-timer LED are driven. Further, the strobe circuit 22 is actuated by a trigger signal from the output terminal cpυ-TRG of the CPU 20 to perform a strobe circuit, and the output terminal CPU-CH
The strobe capacitor is charged in the strobe circuit 22 by the charge signal from G, and when a charging completion signal from the strobe circuit 22 is input to the input terminal cpυ-FLIL, strobe charging is stopped.

The battery voltage check circuit 210 of the drive circuit unit 21 is constructed as shown in FIG.

A transistor T is connected to the input terminal MB connected to the main battery E1.
ri is connected, and the CPU is connected to the input terminal CTL, which is not connected to the CPU20 connected to the base of this transistor Tr1.
Control signals are manually input from 20. The output of the transistor Tri is voltage-divided by resistors R1 and R2, and is applied to the inverting input terminal of the operational amplifier OP, and the base*i voltage is applied to the non-inverting input terminal of the operational amplifier OP. An inverter N is connected to the output terminal of the operational amplifier oP, a base of a transistor Tr2 is connected to this inverter N, and an output terminal BC connected to this transistor Tr2.
is connected to the input terminal cpU-BC of the CPU 20.

Therefore, when the control signal from the CPU 20 is at L level, a current flows from the transistor Tri or ONL and the input terminal MB to the resistor R1 and the resistor R2 via the transistor Tri, and the voltage is divided between the resistor R1 and the resistor R2. occurs. Input to the inverting input terminal of operational amplifier OP. The operational amplifier oP compares the reference voltage value input to the non-inverting input terminal with the voltage value input to the inverting input terminal, and if the voltage at the inverting input terminal is higher than the voltage at the non-inverting input terminal, the output of the operational amplifier OP becomes low. become the level. This operational amplifier O
With the output of P, the output of inverter N becomes H level, transistor Tr2 is turned on, output terminal Be becomes L level, and it is determined that the voltage of main battery E1 is equal to or higher than a predetermined value.

On the other hand, when the voltage value manually applied to the inverting input terminal of the operational amplifier OP is lower than the reference voltage value manually applied to the non-inverting input terminal of the operational amplifier OP, the output of the operational amplifier oP becomes H level. The output of the operational amplifier oP causes the output of the inverter N to go to the L level, the transistor Tr2 turns 0FF-, the output terminal BC goes to the H level, and it is determined that the voltage of the main battery E1 is below a predetermined value. In this manner, when the voltage of the main battery E1 is determined to be below a predetermined value, the central portion 111a of the battery display 111 of the liquid crystal display section 11 turns off to issue a warning.

The film motor driver circuit is constructed as shown in diagram N10.

The film motor driver circuit includes a decoder 213 connected to the CPU 20 and a rotation control circuit 214 that controls the rotation of the film motor FM, and a drive voltage is applied to each circuit.

Input terminal FMI of decoder 213, FM2 has CPU2
0 output terminal FM1. Control signals from FM2 are manually input. Further, the rotation control circuit 214 includes transistors Tr7 to
Trio, diodes D3-D6 and resistors R7-RIO
It consists of

Therefore, the input terminals FM1. of the decoder 213. FM2 is H
When the level is reached, terminals C1 and C3 are at H level, and terminal C4 is at H level.
, C6 are at the L level, the terminals c2 and C5 become undefined, and the transistors Tr8. Trio, Tr.
7. Tr9 is turned OFF and the film motor FM does not rotate.

Further, when the input terminal FMI of the decoder 213 becomes L level and the input terminal FM2 becomes H level, the terminals CI, C
4, C5 is at H level, terminals C2, C3, and C6 are at L level, and transistors Tr8. T
r9 is ONL, transistor Tr7. Trio is OFF
, and the film motor FM rotates forward.

Further, when the input terminal FMI of the decoder 213 becomes H level and the input terminal FM2 becomes L level, terminals C2 and C
3, C6 is at H level, terminals C1, C4, and C5 are at L level, and transistors Tr7. Tr8.rlQ is turned on, and transistor Tr8. Tr9 is OFF
, and the film motor FM reverses.

Furthermore, when the input terminals FMI and FM2 of the decoder 213 go to L level, the terminals C2 and C5 go to H level, and the terminals C1 and
C3, C4, and C6 become L level, and the rotation control circuit 21
The transistor Tr8.4 is ONL, the transistor Tr7.4 is ONL, and the transistor Tr7. Tr9 turns OFF and film motor F
The brakes are applied to M.

Beg 2! 7. Figures 11 to 14 show the shutter drive device, and the first
1 is a front view of the shutter driving device, FIG. 12 is a plan view of the shutter driving device, FIG. 13 is a schematic perspective view of the shutter driving device, and FIG. 14 is an operation time chart of the shutter driving device.

A front plate 30 is attached to the camera body 1, and this front plate 3
An open fixed aperture 31 is opened in front of the lens 0 in alignment with the optical axis of the photographing lens 8. A shutter blade 32 is provided on the front plate 30.
and aperture blades 33 are rotatably supported on support shafts 34 and 35, respectively. The shutter blade 32 is urged by a shutter spring 36 so as to come into pressure contact with a stopper pin 37, and closes the open fixed aperture 31 when not photographing.

This shutter blade 32 is driven to open by the operation of a shutter release member 39 provided on the shutter lever 38, and at the position where the opening fixed aperture 31 is opened, the contact piece 32a of the shutter blade 32 contacts the contact piece 40 of the synchro switch S5. let me,
A synchronization signal is sent to the CPU 20 of the camera control circuit. This synchro switch S5 constitutes shutter operation detection means, and the synchro signal is transmitted to the shutter blade 3.
It is also used as a shutter operation signal to detect the operation of No. 2. The shutter lever 38 has two elongated holes 38a, and the shutter lever 38 is inserted through the elongated holes 38a and guided by a support pin 41 fixed to the front plate 30, so that it can reciprocate in the left and right direction. It has become. A shutter release member 39 provided on the shutter lever 38 is attached to the support shaft 4.
2 as a fulcrum, and a coil spring 43 is attached to this support shaft 42. One end portion 43a of this coil spring 43 is connected to the stopper portion 39 of the shutter release member 39.
a, and the other end 43b is locked to the stopper part 38b of the shutter lever 38, and the shutter release member 39 is always urged by this coil spring 43 so as to come into contact with the stopper part 38b of the shutter lever 38. ing. The shutter lever 38 is attached in the direction of the shutter lever cam 45 by a shutter lever spring 44 attached to the front plate 30, and the end 3Bd of the shutter lever 38 is brought into contact with the shutter lever cam 45.

The aperture blade 33 has a fixed aperture diameter 46 for a small aperture,
This aperture blade 33 is connected to a locking portion 48a of an aperture lever 48 by an aperture spring 47, and this aperture spring 47 causes the aperture blade 3
The actuating part 33a of the throttle lever 48 is always
It is biased in the direction of contacting 8b. The aperture lever 48 has elongated holes 48c formed at two locations.
A support pin 41 that supports the shutter lever 38 is inserted through the hole c, and similarly to the shutter lever 38, it is supported by a support pin 41 so as to be able to reciprocate in the left-right direction. This aperture lever 4
8 is biased toward the aperture lever cam 50 by an aperture lever spring 49 attached to the front plate 30, and the actuating part 33a of the aperture blade 33 is pushed by the stopper part 48b of this aperture spring 48. 33 comes into contact with a stopper pin 51 provided on the front plate 30 and its position is regulated. The aperture blade 33 is provided with a magnetic contact piece 52, and when the aperture blade 33 is rotated and positioned at the fixed aperture diameter 46 for small aperture or on the optical axis of the photographing lens 8, the aperture blade 33 is opposed to the magnetic contact piece 52 and the aperture is closed. A magnet 53 is provided. When the aperture magnet 53 is energized by the driving of the drive circuit unit 21 controlled by the control circuit, the magnet contact piece 52 provided on the aperture blade 33 is attracted, and as a result, the aperture blade 3
The exposure amount is set by the small aperture fixed aperture diameter 46 of No. 3.

The shutter lever cam 45 and the aperture lever cam 50 are integrally formed, and the cam surface 45 of the shutter lever cam 45
a is longer than the cam surface 50a of the aperture lever cam 50, and the shutter lever cam 45 and the aperture lever cam 50 are integrally provided on a cam gear 54 having the same rotation axis. The cam surface 45a of the shutter lever cam 45 contacts the end 38d of the shutter lever 38 to cause it to reciprocate, and the cam surface 5 of the aperture lever cam 50
0a comes into contact with the end 48d of the aperture lever 48 and is caused to reciprocate. The cam gear 54 is connected to the shutter motor SM via gear means of an intermediate gear 55, and the shutter motor S
A DC motor is used for M, and the shutter lever cam 45 and the aperture lever cam 50 are rotated substantially in the same direction by driving the drive circuit unit 21 of the control circuit.

Next, the shutter drive device of this camera is operated at the 14th
The operation time chart shown in the figure will be explained.

When the release button S1 is pressed, the exposure amount is measured by the photometry circuit 211, and at the timing when this measurement ends, if the exposure amount is greater than a predetermined value, the aperture magnet 53 is activated to drive the aperture blades 33. However, if the value is less than a predetermined value, the aperture magnet 53 is not energized.

Furthermore, the shutter motor SM is driven at the timing when the measurement of the exposure amount ends, and the rotational force of the shutter motor SM is transmitted to the cam gear 54 via the intermediate gear 55. When the cam gear 54 rotates counterclockwise, the shutter lever cam 45 pushes the shutter lever 38 in the forward direction, and the aperture lever cam 50 similarly rotates counterclockwise to move the aperture lever 48 in the forward direction. Push.

With this movement of the shutter lever 38, the shutter release member 39
When the cam piece 39a contacts the cam surface 32c of the actuating portion 32b of the shutter blade 32 and the shutter lever 38 moves roughly, the shutter release member 39 rotates counterclockwise against the spring 43 and escapes to operate. The shutter is charged by passing over the portion 32b.

Similarly to the movement of the shutter lever 38, the aperture lever 48
moves, and this movement of the aperture lever 48 causes the aperture blades 33 to move.
is pulled by the aperture spring 47 and rotated counterclockwise, so that the small aperture diameter 46 of the aperture blade 33 is located on the optical axis of the photographing lens 8, and the magnetic contact piece 5 of the aperture blade 33 is rotated counterclockwise.
2 moves to the position of the aperture magnet 53.

Since the cam surface 50a of the aperture lever cam 50 is formed to have a shorter cam surface 45a than the shutter lever cam 45, the end 48d of the aperture lever 48 comes off the aperture lever cam 50 first due to the rotation of the cam gear 54. Aperture magnet 5
3 is not driven, the aperture lever spring 49 moves it in the backward direction and returns it to the initial position. At this time, when the aperture magnet 53 is driven, the aperture blades 33 are held by the strong force of the aperture magnet 53, and the fixed aperture 46 for the small aperture is located on the optical axis of the photographing lens 8.

When the cam gear 54 rotates further, the shutter lever 38
The end portion 38d is the cam surface 45 of the shutter lever cam 45.
a, the shutter lever 38 is moved in the backward direction by the shutter lever spring 44 and returned to the initial position. At this point, the shutter release member 39 provided on the shutter lever 38 pushes the actuating portion 32b of the shutter blade 32, so the shutter blade 32 rotates clockwise to open the open/fixed aperture 31, and the shutter release member 39 When the actuating portion 32b of the shutter blade 32 comes off, the shutter spring 36 rotates the shutter blade 32 counterclockwise to return to the initial position.

If the aperture blades 33 are driven when the shutter blades 32 are driven to open, the aperture waveform will be as shown by the solid line, and if the aperture blades 33 are not driven, the aperture waveform will be as shown by the dotted line. .

When the shutter blade 32 operates, the synchro switch ST is activated and a synchro signal is output, and a strobe light is emitted by the control circuit. Also, when this synchronization signal is output, the shutter of the shutter blade 32 is
The shutter motor SM is manually inputted to the control circuit as a shutter operation signal to stop driving the shutter motor SM. Further, in this control circuit, when the shutter motor SM is driven and the shutter operating signal is not output, the voltage of the power source of the main battery E1 is detected.

In this way, the shutter driving means of the shutter motor SM rotates in one direction under the control of the control circuit, and the cam gear 54 rotates with the rotational force in this one direction, and the shutter lever cam 45 rotates.
The shutter lever 38 is moved in the forward direction to charge the shutter, and the shutter lever 38 is detached from the shutter lever cam 45 at a predetermined rotational position to drive the shutter. When this shutter drive is completed, the control The shutter motor SM is driven or stopped under the control of the circuit. The stop position of this shutter motor SM is cam gear 5.
4 is a shutter lever cam 45 and an aperture lever cam 5
0, the end 38d of the shutter lever 38 and the end 48d of the aperture lever 48 are removed, and the shutter lever 38
The initial positions of the end 38d and the aperture lever 48 can be easily managed as long as the end 48d is not pushed by the shutter lever cam 45 and the aperture lever cam 50.

In addition, the shutter motor driver circuit that drives the shutter motor SM turns on the shutter motor SM, and oFFII
Since only JfXl is required, the circuit configuration becomes extremely simple.

Furthermore, the power transmission means operated by the shutter motor SM only rotates the shutter lever cam 45 and the aperture lever cam 50 in one direction, and does not rotate in the opposite direction, so the structure is simple. Moreover, the occurrence of malfunctions can be reduced.

In addition, since the shutter lever 38 and the aperture lever 48 actuate the shutter blades 32 and the aperture blades 33 by simply reciprocating linearly, the structure is simple and malfunctions can be reduced, reducing the cost of the device. operation, and the reliability of operation is improved.

Camera shutter operation warning device The camera shutter operation warning device uses a shutter motor SM as a shutter drive means for driving the shutter blades 32.
a battery as a power source for supplying power to the shutter motor SM; a shutter operation detection means for detecting the operation of the shutter blade 32 and outputting a shutter operation signal; The power supply voltage detection circuit includes a power supply voltage detection circuit that detects the voltage of the battery and issues a warning when the shutter activation signal is not input.

The operation of the shutter operation warning device of this camera will be explained based on the flowchart of FIG. 15.

In step a, the battery voltage is checked, and if the battery voltage is below a predetermined value, a no battery display is displayed on the liquid crystal display section 11 (step b), and when the battery voltage is above a predetermined value, the liquid crystal display section 11 is displayed. Display battery presence (step C)
. Then, the state of the barrier 9 is determined (step d), and if the barrier 9 is closed, the process moves to step a, and if the barrier 9 is open, the release button S
A determination of the state of 1 is made (step e). When the release button S1 is OFF, the battery voltage is checked (step f), and when the battery voltage is below a predetermined value, the process moves to step b, and when the battery voltage is above the predetermined value, the state of the barrier 9 is checked. A determination is made (step g), and if the barrier 9 is closed, proceed to step a, and the barrier 9 is closed.
If it is open, the process moves to step e. If the release button S1 is ON in step e, the shutter is operated (step h), and the shutter motor SM
Step i) determines the output of the shutter activation signal of the shutter blade based on the shutter activation. When the shutter activation signal is output, the film is wound (step j). In this case, the entire liquid crystal display section 11 flashes to display a warning that the shutter is malfunctioning (step k), and the battery voltage is checked again (step fL). If 'H battery voltage is below a predetermined value, go to step b). If the battery voltage is equal to or higher than a predetermined value, the process moves to step to determine whether the shutter blade has stopped due to malfunction or a drop in battery voltage, and to issue a warning.

The film feeding device of the camera includes an autoloading means, a judgment means for determining whether autoloading has been completed, and information on whether manual rewinding is not possible or manual rewinding is possible. If the information stored in the storage means is information that allows manual rewinding, the manual rewinding means is allowed to operate, and if the information stored in the storage means is on the horizontal axis that does not allow manual rewinding, manual rewinding is performed. a manual rewind means for prohibiting the operation of the means, and before starting autoload, manual rewind disable information is stored in the storage means, and when the determination means determines that the autoload is completed, the manual is stored in the storage means. The non-rewindable information is switched to manual rewindable information.

The operation of the film feeding device of this camera will be explained based on the flowchart shown in FIG.

In step a), the rewind flag F (R) is disabled by inserting a power battery into the camera, and the state of the back cover switch S6, film counter information, and release button S1 is detected, and the conditions for starting film autoloading are detected. A judgment is made (step b), and if the autoload start conditions are met, the back cover switch S6 is in the closed state, the film counter information is "0", and the release button S1 is turned on, autoloading of the film is performed. (Step C). Then, in step d, if the autoload is not performed within a predetermined time, the process moves to step b, and if the autoload is performed normally, the rewind flag F (R) is enabled and the process moves to step b ( Step e).

In step b, if it is not the autoload start condition, it is determined whether manual rewind is to be performed (step f). In the case of manual rewind, the rewind flag F (R) is determined (step g), and if the rewind flag F (R) is yes, manual rewind is performed (step h), and the rewind flag F
Disable (R) (step 1) and move on to step b.

In step g, if the rewind flag F(R) is disabled, the process moves to step j.

Further, in step f, if it is not manual rewind, the state of the release button S1 is determined in step J, and if the release button S1 is OFF, the process moves to step b, and if it is ON, shooting is not performed. (
In step k), the film is wound (stepping). When winding of the film is completed, the process moves to step b, and when the film becomes tensioned, the process moves to step h (step m).

In this flowchart, for example, when a film is loaded in the camera, the back M2 is closed, and the release button S1 is pressed, the film is automatically loaded (step b,
c). If this autoload is not performed normally, the process moves from step d to step b, and steps b to
Step d is looped to prohibit the manual rewind operation to prevent the leading end of the film from being accidentally wound up by the user's operation.

Also, if you accidentally open the camera back while taking a picture, and then close the camera back again, the conditions for starting autoload will be established and autoloading will start, and if a tension is detected during autoloading, autoloading has already started. Since the rewind flag F (R) is enabled, the flow of steps b, f, and g is passed, and the manual rewind operation is permitted in step h. Now, the film can be rewound by the manual rewind operation, and after the film has been displayed, the back M2 can be opened and the film can be taken out.

[Effects of the Invention] As described above, in this invention, after setting film in the camera and closing the back cover, the film is automatically loaded, and if this autoloading is not performed normally, the manual rewind is activated. This prevents the leading end of the film from being accidentally rolled in by the user's operation.

In addition, autoloading is performed when the back cover is opened and then re-opened, and if tension is detected at this time, manual rewind operation is allowed, so the film is rewound, the tension is removed, and the film is re-loaded again. The film can be automatically loaded or the film can be taken out by opening the KM, making handling easier.

[Brief explanation of the drawing]

1 to 7 show a camera to which the present invention is applied, in which FIG. 1 is a front view of the camera, FIG. 2 is a right side view of the same, and FIG.
The figure is a left side view of the same, Figure 4 is a top view of the same, and Figure 5 is a top view of the same. 6 is a rear view of the same, FIG. 7 is a plan view of the liquid crystal display section, and FIG. 8 is a control circuit diagram of a camera to which this invention is applied.
Fig. 9 is a detailed diagram of the battery voltage check circuit, Fig. 10 is a detailed diagram of the film motor driver circuit, and Figs.
4 shows the shutter drive device, FIG. 11 is a front view of the shutter drive device, FIG. 12 is a plan view of the shutter drive device, FIG. 13 is a schematic perspective view of the shutter drive device, and FIG. 14 is the shutter drive device. 15 is a flowchart showing the operation of the sick operation warning device of this camera, and FIG. 16 is a flowchart showing the operation of the film feeding device of this camera. Reference numeral 1 is the main body, 2 is the back Lid, Sl is release button, S2
The beam wind button, S3 is the safety button, S4 is the barrier button, S5 is the synchronization switch, 11 is the liquid crystal display, 20 is the CPU, El is the main battery, E2 is the auxiliary battery, 21
2 is a drive circuit unit, 22 is a strobe circuit, 210 is a battery voltage check circuit, 211 is a photometric circuit, 212 is a driver circuit, FM is a film motor, SM is a shutter motor, 31 is an open fixed aperture, 32 is a shutter blade, 33 is a Aperture blades, 38 is a shutter lever, 44 is a shutter lever spring, 45 is a shutter lever cam, 48 is an aperture lever 5
0 is an aperture lever cam, 54 is a cam gear, and 55 is an intermediate gear. Patent Applicant Konica Co., Ltd. - Vun Representative Patent Attorney Toshi Tsuru Waka
23 Fig. 51 1.5 2a 1]2 Fig. 7

Claims (1)

[Claims] an autoloading means, a determining means for determining whether autoloading is completed, a storage means for storing manual rewindable information or manual rewindable information, and the information stored in this storage means is the manual rewindable information. and manual rewind means that allows the operation of the manual rewind means in the case of , and prohibits the operation of the manual rewind means when the information stored in the storage means is information that disables the manual rewind, and before the autoload starts. The manual rewind disable information is stored in the storage means, and when the judgment means determines that autoloading is completed, the manual rewind disable information stored in the storage means is switched to the manual rewind enable information. Features of the camera's film feeding device.