JP2000112002A - Film unit equipped with lens and built-in data imprinting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a data imprinting device and a film unit with a lens and the built-in data printing device from being illegally reused, and to improve the collecting ratio of the device and the film unit. SOLUTION: A data module 20 is arranged behind the front cover 16 of the unit main body. The positive contact piece 41 of the date module 20 is fixed to a pin 43 installed on the inner side of the front cover 20. By assembling the front cover 16, a module battery 39 is kept electrically connected to a module circuit through the positive contact piece 41. As for the date module 20, when the start of a power supply is detected, the display of a liquid crystal display(LCD) 36 is invalidated. Then, a photographing date is not displayed on the LCD 36 even though the power is supplied again after the front cover 16 is separated so as to load a photographic film cartridge again or discharge the date module 20 and the date module 20 is disconnected from the module battery 39 through the positive contact piece 41. On the manufacturer's side, the display is validated by inputting a prescribed preset code from a connector.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens having a data imprinting device for imprinting data on a photographic film.

[0002]

2. Description of the Related Art A film unit with a lens is pre-loaded with a photo film cartridge consisting of an unexposed photo film and a cartridge for storing the same in a unit body having a simple photographing mechanism, and is inexpensive and easy to use. Therefore, it is widely used. After use, the film unit with the lens is collected together with the unit main body at the developing station, and the photo film cartridge which has been photographed is taken out of the unit main body at the developing station, and the developing and printing processes are performed. The completed unit itself is not returned to the user.

The unit main body is composed of components such as a main body base, an exposure unit in which a photographic lens and a shutter mechanism are assembled, a rear cover, a front cover, and the like. It has a strobe unit to which a discharge tube, charging circuit, battery, etc. are attached. After being collected by the manufacturer, the unit body is disassembled and reused for each part.

For example, an exposure unit and a strobe unit are reused as they are without any abnormalities after a function test. Further, the front cover and the rear cover are crushed and melted without being reused as they are, and are recycled as raw materials again. The rear cover is a part that comes into direct contact with the photo film, so if there is any damage, the photo film will have streak or scratch damage.
This is because a photographic image cannot be repaired.

[0005]

Recently, a third party other than the manufacturer of the film unit with the lens collects the used unit body and reloads and sells a new photographic film cartridge as it is. ing. In this way, without proper quality inspection of each part,
If a unit other than the manufacturer sells the unit body illegally without guarantee of its function, the quality of the newly loaded photo film may be deteriorated, such as damaging the photo film, and the deterioration of the photographing mechanism. , It may not be possible to perform proper photographing. Then, adverse effects such as a decrease in the reliability of the lens-fitted film unit occur for general users.

An attempt has been made to incorporate a data imprinting device into a unit body to imprint data such as a photographing date on a photographic film. Such a film unit with a lens has been proposed by the present applicant. (For example, Japanese Patent Application No. 9-141249).

For example, a data imprinting device for imprinting a photographing date includes a clock circuit for measuring the current date, a liquid crystal display for displaying the date measured by the clock circuit,
It is composed of a battery or the like as a power supply. Such a data imprinting device is relatively expensive, but if the used unit itself containing the data imprinting device is collected and the data imprinting device is reused, substantial manufacturing costs are reduced. It is possible to reduce the cost of the film unit with lens.

However, as described above, if the unit main body is collected by a third party or the data imprinting device is taken out from the unit main body, the manufacturing cost of the film unit with the lens incorporating the data imprinting device is reduced. As a result, the film unit with the lens cannot be sold at low cost. Also, if a new film cartridge is loaded and sold without performing proper quality inspection on the unit body and data imprinting device, there is a possibility that inconveniences such as data not being imprinted may occur.
This reduces the reliability of the lens-equipped film unit for general users.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a simple and inexpensive configuration to prevent unauthorized reuse of a data imprinting apparatus and a unit body incorporating the same. It is an object of the present invention to provide a lens-fitted film unit with a data imprinting device that enables reuse of a film.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an apparatus for reloading a photographic film cartridge or for imprinting a data from the end of taking a photographic film to the removal of the photographic film cartridge. In conjunction with the separation of a predetermined component from the unit main body for removal, a power supply stopping means for stopping power supply from the battery to the data imprinting device is provided. Power supply detecting means for detecting that the power supply has started, and display control means for maintaining the display of the display means invalid in response to the detection of the start of power supply by the power supply detecting means; When the power supply to the data imprinting device is stopped by the means and the power supply is resumed, the display of the display means is invalidated. It is obtained so as to be lifting. In addition, by inputting a predetermined signal from the outside to the display control unit, the display of the display unit is enabled so that the data imprinting device can be reused properly. .

[0011]

FIG. 2 shows the appearance of a film unit with a lens incorporating a data imprinting device embodying the present invention. Although FIG. 2 shows only the unit main body of the film unit with a lens, an external body is actually wound around the unit main body, and photographing can be performed with the external body wound.

On the front surface of the unit main body 2, a photographing lens 3, an object side window 4a of a finder 4, a strobe light emitting section 5,
An operation lever 6 for turning on / off the charging for the strobe and a light collector 7 are provided. Also, the unit body 2
A shutter button 8, a counter window 9 for displaying the number of remaining photographable frames, and an opening 10a from which a display light guide 10 for displaying the completion of strobe charging are provided. Further, on the back side of the unit body 2, 1
A winding knob 11 that is rotated each time a frame is shot is exposed, and an eyepiece window 4b (see FIG. 3) of the finder 4 is provided at a position facing the objective window 4a.

FIG. 3 is an exploded perspective view of the unit main body 2. The unit main body 2 includes a main body base 13 and an exposure unit 1.
4, strobe unit 15, front cover 16, rear cover 1
7. It comprises a IX240 type photo film cartridge 18 of the Advanced Photo System, a date module 20 as a data imprinting device, and the like.

In the main body base 13, a cartridge storage chamber 13a for storing the cartridge 18a of the photographic film cartridge 18, and a film for storing an unexposed photographic film 18b drawn out of the cartridge 18a and rolled. The roll chamber 13b is formed integrally. A winding knob 11 is rotatably disposed above the cartridge storage chamber 13a, and a light-shielding lid closing mechanism 21 is provided.

The hoisting knob 11 has a shaft integrally provided at its lower part engaged with one end of a spool 18c of a cartridge 18a housed in the cartridge housing chamber 13a. By turning the winding knob 11 counterclockwise in the figure, the photographed photo film 18b is
It is wound inside a. The cartridge 18a is provided with a light-shielding lid for opening and closing a film feed port for the photo film 18b to enter and exit, and an engagement hole 22 provided at an end of the light-shielding lid is exposed at an end of the cartridge 18a. . The light-shielding lid closing mechanism 21 measures the length of the photo film 18b wound up in the cartridge 18a by counting the number of rotations of the winding knob 11, and the tip of the photo film 18b is stored in the cartridge 18a. Only when the photographic film 18b is wound up, the film sending port is closed light-tightly by the light-shielding cover by rotating the cover closing member engaged with the engaging hole 22.

An aperture 13c for defining a screen size of an exposure screen formed on the photographic film 18b is provided between the cartridge storage chamber 13a and the film roll chamber 13b.
A light-shielding cylinder 13d protruding forward is provided around the aperture 13c.

The exposure unit 14 is a unit formed by assembling a shutter mechanism, a film stopping mechanism, a counter mechanism for displaying the number of remaining photographable frames, a finder 4, and the like in a dark box 23. A shutter cover 24 is attached to the front of the dark box 23, and the taking lens 3 is held by a lens holder 25 attached to the front of the shutter cover 24. This exposure unit 14
Are assembled to the main body base 13 by attaching the dark box 23 to the light shielding tube 13d, and the dark box 23 and the light shielding tube 13
The space between the taking lens 3 and the aperture 13c is shielded by d. The exposure unit 14 has a display light guide 1 that moves up and down in conjunction with the slide of the operation lever 6.
0 is provided. The date module 20 is arranged on the front surface of the shutter cover 24 by being attached to the exposure unit 14 via the receiving plate 33.

The strobe unit 15 is formed by assembling a strobe light emitting unit 5, a main capacitor 27, a synchro switch 28, a strobe battery 29, and the like on a strobe circuit board 26. When the operation lever 6 is slid upward, a charging switch provided on the strobe circuit board 26 is turned on, and the main capacitor 27 is charged. The sync switch 28 includes a pair of vertically arranged contact pieces, and the upper contact piece is pressed by a pressing piece 31a (see FIG. 6) formed integrally with the shutter blade 31 when the shutter mechanism is operated. It is turned ON by contacting the lower contact piece. Strobe light is emitted from the strobe light emitting unit 5 by turning on the synchro switch 28.

The front cover 16 is provided with a shutter button 8, an objective window 4a, an opening 16a for exposing the photographing lens 3, a strobe light emitting section 5, and an operation lever 6.
16c is formed. The light collector 7 is fitted into and fixed to an opening 16d formed near the opening 16a. The front cover 16 is attached to the front side of the main body base 13 to which the exposure unit 14, the strobe unit 15, and the date module 20 are attached so as to cover them.

The rear cover 17 covers the rear side of the main body base 13 in which the cartridge 18a and the photo film 18 are stored in the cartridge storage chamber 13a and the film roll chamber 13b, respectively.
A film passage from b to the cartridge storage chamber 13a through the back of the aperture 13c is formed. The photographic film 18b is transported from the film roll chamber 13b to the cartridge 18a in the cartridge storage chamber 13a through the film passage.

The bottom cover 17a, 17b is formed at the bottom of the rear cover 17, and these bottom covers 17a, 17b are formed.
The bottoms of the cartridge storage chamber 13a and the film roll chamber 13b are light-tightly closed by a and 17b. The bottom cover 17a of the cartridge storage chamber 13a is openable and closable, and also serves as a take-out cover for taking out the cartridge 18a containing all the photographed photo films 18a.

As shown in FIGS. 1 and 4, the date module 20 includes a display circuit including an LCD (Liquid Crystal Display) 36 as display means for displaying data imprinted on the photographic film 18b, in this example, a photographing date. Detection means,
A module circuit comprising display control means, a module board 37 on which each component of the module circuit is mounted, a module case 38 accommodating the module board 37, a module battery 39 serving as a power supply for the module circuit, and a conductive metal. And a plus-side contact piece 41 and the like. As the module battery 39, a small and thin button type battery is used.

A battery holder part 42 is formed integrally with the module case 38. At the center of the battery holder part 42, the other end of a minus contact piece 40, one end of which is connected to the module board 37, is exposed. Have been. The module battery 39 is disposed on the battery holder portion 42 such that the negative electrode surface 39a contacts the other end of the negative contact piece 40.

The positive contact piece 41 is connected to a pin 4 formed on the inner surface of the front cover 16 through a hole 41a formed in the positive contact piece 41.
3 is fixed to the tip. This positive contact piece 41
The front cover 16 is connected to the exposure unit 14 and the data module 2
0, etc., is attached to the front surface of the main body base 13 to which one end 41b enters through an opening 38a formed in the front surface of the module case 38 and comes into contact with a contact (land) 37a on the module substrate 37. Module battery 3 with end 41c disposed in battery holder portion 42
9 is in contact with the positive electrode surface 39b. As a result, the module battery 39 and the module circuit are electrically connected via the contact pieces 40 and 41, and the module circuit is energized. That is, the plus side contact piece 41 is held at the connection position by the pin 43 in a state where the front cover 16 is assembled.

The plus-side contact piece 41 has elasticity. When the front cover 16 is assembled as described above, the front-side cover 41 is elastically deformed toward the module case 38. One end 41b and the other end 41c are contacted by the elastic force so that the other end 41c is pressed against the positive electrode surface 39b of the module battery 39, respectively.
As a result, the module battery 39 is held in the battery holder portion 42, and the electrical connection between the contact pieces 40 and 41 and the module battery 39 and the electrical connection between the plus-side contact piece 41 and the contact 37a are ensured. It is assumed that.

In this lens-fitted photo film unit, an attempt is made to reload a used photo film cartridge 18 into the used unit body 2 or to use the date module 20.
When taking out, it is necessary to separate the front cover 16 from the unit body 2. And this front cover 1
By attaching the plus side contact piece 41 to 6,
When the front cover 16 is separated, the positive contact piece 41 becomes the contact 37a and the positive electrode surface 39b of the module battery 39.
And the power supply to the date module 20 is stopped. That is, the pin 43 formed integrally with the front cover 16 is a power supply stopping means,
6 is separated, the positive contact piece 41 is shifted from the connection position to the cutting position.

The module circuit includes a module battery 39.
Activated by receiving power from The LCD 36 displays the current "year, month, day" (shooting date) to be imprinted on the photo film 18b. As the LCD 36, a transparent “year, month, day” on an opaque background, for example, “'98052
A transparent type that displays characters such as "8" is used. The LCD 36 is exposed from openings formed on the front side and the back side of the module case 38,
It faces the illuminating part 7a of the light collector 7 assembled in 6 through an opening on the front side.

FIG. 5A shows a cross section of the light collector 7. The light collector 7 is formed by molding a transparent plastic resin, and the illumination part 7a has a groove shape with a “V” cross section on the front surface 7b side of the light collector 7 and slightly protrudes toward the back surface 7c. Is formed. The external light incident on the front surface 7b exposed on the front side of the unit body 2 repeatedly reflects inside the light collector 7 to reach the illumination unit 7a, and is emitted by the illumination unit 7a in the rear direction. As a result, external light collected on the wide surface 7b of the light collector 7 is emitted from the illumination unit 7a,
D36 is bright and illuminated. Of the light from the illumination unit 7a, the transmitted light transmitted through the LCD 36 is emitted from the opening on the back side of the module case 38 as date light. Note that, as shown in FIG. 5B, the portion of the light collector 7 on the back surface 7c side of the illumination unit 7a does not have to be projected.

As shown in FIG. 1, a connector 45 is exposed on the front surface of the module case 38. In the date module 20, the display of the LCD 36 is maintained in an invalidated state only by energizing the module circuit, and the display of “year / month / day” is not performed. In order to enable the display on the LCD 36 so that “year / month / day” is displayed,
A predetermined preset code is electrically input from the connector 45 as a predetermined preset signal. The connector 45 is also used to input initial date data to the module circuit. For example, the connector 45 is provided at a position facing the opening 16 d of the front cover 16. At the time of manufacturing a film unit with a lens, after the front cover 16 is assembled to the main body base 13, the light collector 7 is moved to the front cover 16. Before assembling, a terminal from an external computer is connected to the connector 45 through the opening 16d so that a preset code and initial date data can be input.

As shown in FIG. 6, the exposure unit 14 has a shaft 46 between the front surface of the dark box 23 and the shutter cover 24.
The shutter blade 31 is rotatably supported by the shutter blade 31. The shutter blade 31 is urged by a spring 47 to a closed position where the photographing shutter opening 23a is closed. The photographing shutter opening 23 a is provided at the center of the front surface of the dark box 23, that is, on the optical axis 3 a of the photographing lens 3. The upper end 31b of the shutter blade 31 is kicked off by a kicking lever 48 which is moved rightward in the figure in conjunction with the shutter release, and is rotated clockwise about the shaft 46. It is rotated clockwise. The one-way swing of the shutter blade 31 opens and closes the photographing shutter opening 23a. While the photographing shutter opening 23a is open, the subject light transmitted through the photographing lens 3 enters the dark box 23 and exposes the photographic film 18b set behind the aperture 13c.

An opening 24a is formed in a portion of the shutter cover 24 facing the LCD 36 of the date module 20, and a date shutter opening 23b is formed in a front portion of the dark box 23 facing the opening 24a. The shutter blade 31 has a date shutter opening 23b.
The shutter member 49 for date which opens and closes is integrally formed. The date shutter member 49 includes the shutter blade 3
The date shutter opening 23b is opened and closed in conjunction with the swing of 1. While the date shutter opening 23b is open, the date light from the LCD 36 enters the inside of the dark box 23. In the dark box 23, the projection lens 50 includes a fixing member 50a.
Has been fixed by. The date light reaches the photographic film 18b via the projection lens 50. As a result, the date displayed on the LCD 36 is imaged on the photographic film 18b, and is optically reflected in the exposure screen.

FIG. 7 shows the electrical configuration of the module circuit. As described above, the module circuit includes the display circuit, the conduction detecting means, and the display control means, and all use the module battery 39 as a power source. The display circuit is an oscillation circuit 5
1, a clock circuit 52, an LCD driver 53, and an LCD 36. The oscillating circuit 51 generates a clock having a fixed period using the crystal oscillator 51 a connected thereto, and sends the clock to the clock circuit 52.

The clock circuit 52 stores calendar information for several years, measures time (hour, minute, second) and date based on the clock from the oscillation circuit 51, and displays the current date. Outputs the date data. When a film unit with a lens is manufactured, initial date data is input from an external computer 54 via a connector 45, and the initial date data is sent to a clock circuit 52 and set. The initial date data represents the time and date at the time of the input, and the clock circuit 52 measures the time from the time and date indicated in the set initial date data. Thereby, the clock circuit 52 measures the current time and the date.

The date data is sent to the LCD driver 53. The LCD driver 53 drives the LCD 36 based on the date data to display “year / month / day” represented by the date / time data on the LCD 36. When the display control signal from the display control unit is “H level” "Is enabled only when the display control signal is" L level ", and the display is disabled when the display control signal is" L level ". Date is not displayed.

As a method of invalidating the display on the LCD 36, a drive signal for displaying the date on the LCD 36 is stopped when the display control signal is at "L level". For example, the power supply to the LCD 36 may be stopped, or the LCD driver 52 itself may not be operated. However, other methods may be used. In addition, as a method of invalidating the display, the display on the LCD 36 may be made dumb.

The power supply detecting means comprises a charge / discharge circuit 56 and a waveform shaping circuit 57, and detects that the module battery 39 is electrically connected and power supply to the module circuit is started. The charging / discharging circuit 56 includes a resistor 56a and a capacitor 56b connected in series, and a diode 56c connected in parallel to the resistor 56a.
6b is output to the waveform shaping circuit 57. When the module battery 39 is electrically connected to the module circuit and energization is started, the capacitor 56b is charged by the module battery 39 via the resistor 56a, and thereby the resistance value of the resistor 56a and the capacitance of the capacitor 56b. The charging voltage gradually increases in accordance with the time constant determined by the above, and becomes equal to the voltage of the module battery 39 after a predetermined time. The diode 56c is connected so that its anode is on the side of the capacitor 56b, and when the electrical connection between the module circuit and the module battery 39 is released, the diode 56c discharges the capacitor 56b to discharge the charge and discharge circuit 5
6 is initialized.

The waveform shaping circuit 57 includes two inverters 5
7a and 57b are connected in series, and each of the inverters 57a and 57b has a threshold level for changing the output signal from “H level” to “L level” from “L level” to “H level”. A Schmitt trigger input higher than the threshold level is used. The charging voltage of the capacitor 56b is input to the preceding-stage inverter 56a, and is output from the subsequent-stage inverter 71b as an energization detection signal that changes in a pulse shape.

As described above, by passing the charging voltage of the capacitor 56b through the waveform shaping circuit 57, the signal level changes from "L level" to "H level" at a point in time when a predetermined time has elapsed after the start of energization. An energization detection signal is created. As a result, the DF at the subsequent stage of the waveform shaping circuit 57
After the F (flip-flop) circuit 58 operates stably, a change in the energization detection signal indicating the start of energization is given to the D-FF circuit 58. Further, by using a Schmitt trigger input as the inverters 57a and 57b, the energization detection signal is prevented from being changed by the influence of external electric noise, for example, electric noise generated by the strobe unit 15. I have.

The display control means comprises a D-FF circuit 58, a code confirmation circuit 59, and a transistor 60. When the signal input to the clock terminal (CLK) changes from “L level” to “H level”, the D-FF circuit 58 outputs the signal level (“H level” or “L”) input to the D terminal. Level)), and outputs the captured signal level from the Q terminal. In response to a change in the energization detection signal from “L level” to “H level”, a display control signal is output. It is connected so as to be continuously at “L level”.

More specifically, the energization detection signal from the waveform shaping circuit 57 is input to the clock terminal of the D-FF circuit 58, and the “L” level signal is always input to the D terminal by pulling down. Further, the output of the Q terminal is forcibly set to “H level” by setting the input signal to “L level”.
Terminal (PRE) is pulled up via a pull-up resistor to set the “H level”
Is input, but "L" is controlled by the code confirmation circuit 59.
"Level" has been entered. Q
An LCD driver 53 is connected to the terminal, and the output from the Q terminal is a display control signal. In addition,
A clear terminal (CL) for forcibly setting the output of the Q terminal to “L level” when the input signal is set to “L level”
R) is pulled up and always receives "H level" because the output of the Q terminal does not need to be forced to "L level".

By connecting the D-FF circuit 58 in this way, when energization by the module battery 39 is started, an energization detection signal that changes from “L level” to “H level” is output from the D-FF circuit 58. The D-FF circuit 58 takes in the “L level” of the D terminal and continuously sends an “L level” display control signal to the LCD driver 53 from the Q terminal. Therefore,
Simply starting energization by the module battery 39 will result in L
The state where the display of the LCD 36 is invalidated by the CD driver 53 is maintained.

The transistor 60 has a collector terminal connected to the preset terminal of the D-FF circuit 58 and an emitter terminal grounded. Also, the transistor 60
When the base terminal is connected to the code confirmation circuit 59, the collector
It is controlled to ON where the emitter is conductive, and OFF where the collector and emitter are non-conductive. The code confirmation circuit 59 stores a predetermined preset code. The code checking circuit 59 turns on the transistor 60 for a predetermined time only when a preset code is input via the connector 45 and the input preset code matches the stored one.

When a predetermined preset code is input to the code checking circuit 59, an "L level" signal is input to the preset terminal, and the output of the Q terminal, that is, the display control signal is continuously changed to the "H level". LCD
The display of 36 is activated. The preset code is managed by the manufacturer of the film unit with the lens so as not to leak out. Thus, even if a third party other than the manufacturer resumes power supply to the module circuit at the time of reuse after the power supply to the module circuit is stopped, the LCD 3
6, the display of the unit body 2 and the date module 20 is prevented from being validated, and the unit body 2 and the date module 20 are prevented from being illegally reused. Further, the manufacturer can reuse the date module 20 by inputting a predetermined preset code.

A number such as a serial number is assigned to each date module 20, and the preset code is encrypted for each date module 20 by encrypting the preset code based on this number. Irregular reuse can be more reliably prevented. Further, if the LCD driver 53, the display control means, and the like are formed as a one-chip integrated circuit, it is possible to make it difficult to modify the hardware for enabling the display on the LCD 36.

Next, the operation of the above configuration will be described. At the time of manufacturing a film unit with a lens, a photographic film cartridge 18 is loaded into a main body base 13 to which an exposure unit 14, a strobe unit 15, and the like are assembled.
At this time, the cartridge 18a is placed in the cartridge storage chamber 13a, and the photographic film 18b drawn out of the cartridge 18a is rolled into a film roll chamber 13a.
b.

After loading the photographic film cartridge 18,
A rear cover 17 is attached to the back of the main body base 13, and the bottoms of the cartridge storage chamber 13a and the film roll chamber 13b are closed by bottom lids 17a and 17b, respectively. The body base 13 is sent to the date module assembling step with the photographing lens 11 facing upward, and the date module 20 excluding the plus-side contact piece 41 is assembled together with the receiving plate 33. And this dating module 20
The module battery 39 is placed on the battery holder part 42 of the above.

The main body base 13 to which the date module 20 has been assembled in this way is sent to the front cover assembling step. The front cover 16 has a date module 20 in advance.
The positive side contact piece 41 is fixed to the pin 43. Then, one end 41 b of the plus side contact piece 41 is moved from the opening 38 a of the module case 38 to the module case 3.
8 so that the front cover 16 is
3 is attached to the front surface. As a result, one end 41b of the positive contact piece 41 is connected to the contact 37a of the module board 37.
And the other end 41c is pressed against the positive electrode surface 39b of the module battery 39, respectively. Therefore, at this time, the power supply to the module circuit is started from the module battery 39 via the negative contact piece 40 and the positive contact piece 41.

As shown in FIG. 8, when energization by the module battery 39 is started, the charging voltage of the capacitor 56b output from the charging / discharging circuit 56 gradually increases. Accordingly, the waveform shaping circuit 57 sets the energization detection signal to “L level” immediately after the start of energization.
When the charging voltage reaches a predetermined threshold level, the conduction detection signal is set to “H level”. Then, after a predetermined time has elapsed from the start of energization, “L
The energization detection signal that changes from “level” to “H level” is D
-Input to the clock terminal of the FF circuit 58.

The D-FF circuit 58 includes a module battery 39
At the time when the operation is started by receiving the current by the power supply, the change in the supply voltage at that time and the characteristics of the D-FF circuit 58 cause
It is not known whether the output from the terminal, that is, the display control signal becomes “L level” or “H level”. However, as described above, the “L level” changes to the “H level”.
Is input to the clock terminal, the "L level" of the D terminal is taken into the D-FF circuit 58, which becomes the signal level of the display control signal from the Q terminal. That is, the display control signal becomes “L level”.

Therefore, when the energization by the module battery 39 is started, the clock circuit 52 starts operating and the date data is sent to the LCD driver 53, but the display control signal is set to "L level". , LCD driver 53
The display on the LCD 36 is invalidated by the
36 does not display the date.

The main body base 1 to which the front cover 16 is attached
3 is sent to the next step, and the terminal from the external computer 54 is connected to the connector 45 through the opening 16 d of the front cover 16. When connected to the module circuit via the connector 45, the external computer 54 inputs a predetermined preset code to the code confirmation circuit 59, and outputs initial date data representing the time and date at that time to the clock circuit 52. To enter.

When the preset code is input, the code confirmation circuit 59 compares the input preset code with the stored preset code. Of course, in this case, the code confirmation circuit 59
Is input, the code confirmation circuit 59 turns on the transistor 60 when the preset code matches, and the D-FF circuit 5
An "L level" signal is input to the preset terminal 8 for a fixed time. Thereby, the D-FF circuit 58 sets the display control signal from the Q terminal to “H level”.
The D driver 53 enables the display of the LCD 36 which has been disabled and has no display until then, and the display is continued.

The initial date data is set in the clock circuit 52. Thus, the clock circuit 52 starts measuring time from the time and date indicated by the initial date data, and outputs the date data representing the current date to the LCD driver 53. Become. As a result, the LCD 36 displays the current date measured by the clock circuit 52 in transparent characters.

When the input of the preset code and the initial date data is completed, the light collector 7 is inserted into the opening 16d of the front cover 16.
The unit main body 2 is completed by being fitted and fixed.
The completed unit main body 2 undergoes various functional tests, and the unit main body 2 that has passed the functional test is provided with an exterior to complete a lens-fitted film unit. The completed lens-fitted film unit is shipped and sold, and is used for photographing by the user.

At the time of photographing, the photographer turns the winding knob 11 to wind the photographic film 18b by one frame.
The shutter release operation is performed by pressing the shutter button 8. When the shutter button 8 is pressed, the shutter blades 3
1 swings to open and close the photographing shutter opening 23a,
During this time, the photographic film 18b is exposed with the subject light transmitted through the photographing lens 3. Further, in conjunction with the shutter blade 31, the date shutter member 49 opens and closes the date shutter opening 23b. The LCD 36 is illuminated with light condensed by the light collector 7, and date light is emitted from the displayed date. As a result, while the date shutter opening 23b is open, the date light enters the inside of the dark box 23, reaches the photo film 18b via the projection lens 50, and the current date is displayed on the photo film 18b. The image is optically captured on the exposure screen as the shooting date.

After the photographing, the winding knob 11 is rotated to operate
When the photo film for the frame is wound up, the camera enters a standby state for the next photographing. Hereinafter, photographing is sequentially performed while the pressing operation of the shutter button 8 and the rotating operation of the winding knob 11 are performed.
After the photographing of all the photographing frames is completed, the winding knob 11 can be continuously rotated.
1 is continuously rotated, and all the photo films 18b are rotated.
Is stored in the cartridge 18a. Then, when all the photo films 18b are stored in the cartridge 18a, the light shielding cover closing mechanism 21 is operated, and the cartridge 18
The film delivery port a is closed with a light-shielding lid. The user
Bring the film unit with the lens to a development facility and request development and printing.

In a developing laboratory or the like, the bottom cover 17 of the unit body 2 is used.
a is opened, and the photographed photo film cartridge 18 is taken out of the cartridge storage chamber 13a. Thereafter, the photographic film 18b is subjected to a developing process, and a print photograph is created from each photographed frame of the developed photographic film 18b. In the exposure screen of each shooting frame, L of the date module 20 is displayed.
Since the photographing date displayed on the CD 36 is imprinted, the photographing date is printed together with the subject image on the created print photograph. The photo film 18b is returned to the user together with the print photo while being stored in the cartridge 18a.

On the other hand, the used unit main body 2 from which the photographic film cartridge 18 has been taken out is collected by a manufacturer of a film unit with a lens. In the manufacturer,
The collected unit body 2 is disassembled. In this disassembly, when the front cover 16 is separated, the plus side contact piece 41 attached to the front cover 16
Separated from As a result, one end 41b of the positive contact piece 41 is separated from the contact 37a of the module substrate 37, and the other end 41c is separated from the positive electrode surface 39b of the module battery 39. Dripping. Then, when the current is cut off, the capacitor 56b is discharged via the diode 56c, so that the charge / discharge circuit 56 is initialized.

Each part obtained by disassembly is recycled and reused according to its function and degree of deterioration. The exposure unit 14, the strobe unit 15 and the like are subjected to a function test, and if there is no problem in the function, the photographing lens 3 and the strobe light emitting unit 5 are washed and then sent to the manufacturing process of the film unit with a lens, and a new film with a lens is provided. Reused as part of a unit. Further, the front cover 16 and the rear cover 17 are finely crushed into resin pellets, which are recycled as raw materials for each part of the lens-fitted film unit.

The date module 20 includes the exposure unit 1
4. As in the case of the strobe unit 15, a device which has been subjected to a function test and has no problem in its function is sent to the manufacturing process of the film unit with a lens, and is assembled into a new film unit with a lens. And this assembly is
It is performed in the same procedure as above. New module battery 39
When the front cover 16 is assembled, the positive electrode surface 39a of the module battery 39 and the module circuit are connected by the positive contact piece 41 fixed to the front cover 16, and the power supply to the module circuit is resumed. When the energization to the module circuit is resumed, the capacitor 56b discharged by the diode 56c at the time of disassembly is charged again. At this time, an energization detection signal that changes from "L level" to "H level" is generated. The display control signal is set to “L level”, but by inputting a predetermined preset code, the display control signal is set to “H level” and the display on the LCD 36 is enabled. LCD with current date
36 is displayed. Thus, the manufacturer can enable the display on the LCD 36.

In the case where the used unit body 2 is not collected by the maker but collected by a photographic film refiller or the like, a new photographic film cartridge 18 is used.
When reloading into the unit main body 2, the light-shielding lid closing mechanism 21 provided at the upper part of the cartridge storage chamber 13a is returned to a position for holding the light-shielding lid of the cartridge 18b in an open state, or assembled into the exposure unit 14. Since the operation of returning the counter mechanism and the winding stop mechanism to the initial position is required, it is necessary to separate the front cover 16 from the unit body 2. Further, even when taking out the date module 20, it is necessary to separate the front cover 16.

Reloading of the photographic film cartridge 18,
When the front cover 16 is separated from the unit body 2 in order to take out the date module 20, the plus side contact piece 41 attached to the front cover 16 is separated from the data module 20 as in the case of disassembly by the manufacturer. hand,
Power supply to the module circuit is stopped.

For example, after the reloading of the photo film cartridge 18 is completed, the front cover 16 is attached to the main body base 13, and the positive electrode surface 39 b of the module battery 39 and the contact 37 a on the module board 37 are connected by the positive contact 41. When the connection is established, the energization of the module circuit is started (restarted). However, since the capacitor 56b is discharged by the diode 56c when the front cover 16 is separated first,
In the same manner as described above, when energization is started, the energization detection signal changes from “L level” to “H level”. For this reason,
The display control signal becomes “L level”, the display on the LCD 36 is invalidated, and the LCD 36 is in a state where the date is not displayed.

Since a person other than the manufacturer does not know the preset code, the display control signal remains at "L level" and cannot be set to "H level". Therefore, the display on the LCD 36 is maintained in a disabled state, and a unit other than the manufacturer of the film unit with the lens cannot reuse the unit main body 2. Similarly, the date module 20 cannot be separated and reused. As a result, the unit main body 2 and the date module 20 cannot be reused, so that the unit main body 2 is not collected by anyone other than the manufacturer, and the collection rate to the manufacturer is improved.

In the above embodiment, the display control signal is set to “L level” by hardware using the D-FF circuit, but may be set to “L level” by software processing. In the example shown in FIGS. 9 and 10, the controller sets the display control signal to “L level” based on a change in the energization detection signal based on a program.
It is intended to be. Except as described below, the embodiment is the same as the above-described embodiment, and substantially the same components are denoted by the same reference numerals as in the above-described embodiment, and description thereof is omitted.

In FIG. 9, a controller 64 as a display control means is connected to a ROM 64a in which a program and a preset code necessary for control are written, and a RAM 64b used as a work memory.
The controller 64 sets initial date data in the clock circuit 52 according to a program in the ROM 64a, and controls the signal level of a display control signal to the LCD driver 53.

As shown in FIG. 10, the controller 64 sets the display control signal to “L level” when the energization detection signal that changes from “L level” to “H level” is input from the waveform shaping circuit 57. When the preset code input via the connector 45 matches that of the ROM 64a, the display control signal is set to "H level". Further, the controller 64 sets the initial date data to the clock circuit 52 when the initial date data is input after the display control signal is set to “H level” by the input of the preset code.

Thus, even if the used unit main body 2 is disassembled and power supply to the module circuit is stopped once and then power supply is resumed, as long as a predetermined preset code is not input as in the above embodiment, Since the state where the display control signal is set to the “L level” is maintained by the controller 64, the display on the LCD 36 is maintained in a disabled state.

FIG. 11 shows that the display control signal is set to "L" by a program executed immediately after the controller starts operating.
This shows an example in which the charging / discharging circuit and the waveform shaping circuit can be omitted by setting “level”. The configuration of the module circuit in this example is the same as that of the example of FIG. 9 except that there is no charge / discharge circuit and waveform shaping circuit, so that the illustration thereof is omitted. In the case of this example, the module battery 39
When the operation is started by energization from the controller 64, the controller 64
The processing of FIG. 11 is performed. The controller 64 first sets the display control signal to the “L level”, and thereafter waits for the input of a predetermined preset code. Then, when a preset code is input and matches this with the one stored in the ROM 64a, the display control signal is set to "H level", but if not, it is maintained at "L level". By operating the controller 64 in this manner,
The activation of the controller 64 detects the start of energization, and the controller 64 itself serves as the energization detecting means. Therefore, a charge / discharge circuit and a waveform shaping circuit are not required.

In each of the above-described embodiments, the power supply to the module circuit is stopped when the positive cover of the date module is attached to the front cover and the front cover is separated from the unit main body. Alternatively, the energization may be stopped. Hereinafter, an example in which energization is stopped by a method different from the above-described embodiment will be described. Note that the other parts than those described below are the same as those in the above embodiment,
Components substantially the same as those of the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the example shown in FIG.
The positive contact piece 66 for making an electrical connection between the positive electrode surface 39b and the module circuit has a hole 66 formed therein.
The pin a is fixed to a pin 38b provided on the front side of the module case 38 via a, and one end 66b of the pin 38b is maintained in the module case 38 so as to be constantly connected to the contact 37a of the module board 37. On the other hand, the positive contact piece 6
The portion on the other end 66c side with respect to the hole 66a is standing upright at a proper angle away from the battery holder 42, that is, in the direction of the front cover 16. On the inner surface of the front cover 16, a convex portion 67 as a power supply stopping means is provided with a positive contact piece 66.
Is provided at a position facing the upright portion.

Thus, when the front cover 16 is assembled, the upright portion of the plus-side contact piece 66 is pressed by the convex portion 67 to be elastically deformed in a direction approaching the module battery 39, and the other end 66 c Is held in a state of being in contact with the positive electrode surface 39b of the module battery 39 (connection position). When the front cover 16 is separated from the unit body 2, the pressing of the plus side contact piece 66 by the convex portion 67 is released, and the portion of the elastically deformed plus side contact piece 66 on the other end 66 c side is removed. Module battery 3 with resilience
Move in the direction away from 9. As a result, the other end 66c moves to the cutting position away from the positive electrode surface 48b, and the energization to the module circuit is stopped.

The example shown in FIG. 13 is an operation performed to take out the cartridge from the cartridge storage chamber.
The power supply to the module circuit is stopped in conjunction with the opening operation of the bottom cover of the cartridge storage chamber.

As shown in FIG. 13, the battery holder 42
Is disposed near the cartridge storage chamber 13a,
Further, an opening 42a through which the contact portion 68a of the minus contact piece 68 enters and exits is formed. One end of the positive contact piece 69 is fixed by soldering to the module substrate 37 exposed at the lower part of the module case 38, and the other end contacts the positive electrode surface 39b of the module battery 39 by elastic force. The module battery 39 is pressed against the battery holder 42. As a result, the module battery 39 is held by the battery holder section 42, and the positive electrode surface 39b of the module battery 39 and the module circuit are electrically connected.

The negative contact piece 68 is formed by stamping an elastic metal plate into an L-shape. One end of the negative contact piece 68 is soldered to the module substrate 37 below the module case 38 on the back side of the module case 38. And is electrically connected to the module circuit. The minus contact piece 68 is bent obliquely upward such that the other end of the negative contact piece 68 is separated from the battery holder 42 from the part fixed to the module board 37. At the other end of the minus side contact piece 68, a contact portion 68a for making contact with the minus electrode surface 39a of the module battery 39, and a piece 68b extending in the left-right direction of the unit main body 2 toward the cartridge storage chamber 13a are integrated. Is formed. The contact portion 68a is formed, for example, by pressing the other end portion of the minus contact piece 68 into a convex shape, and protrudes toward the battery holder portion 42 side.

On the outer wall surface of the cartridge storage chamber 13a behind the battery holder portion 42, a slide member 70 is slidably arranged in the vertical direction of the unit body 2. At the lower end of the slide member 70, an engagement claw 70a is formed to engage with an engagement claw 71 provided on the inner surface of the bottom cover 17a. A contact piece holding portion 70b protruding in a direction toward the head is formed.

A guide plate 72a for guiding the slide of the slide member 70 in the vertical direction is provided on the outer wall surface of the cartridge storage chamber 18a, and an upper portion of the slide member 70 is in contact with the upper surface of the contact piece holding portion 70b. And a restricting member 72b for restricting the slide to the right. Bottom lid 17a
Is closed, the engaging claw 70a and the engaging claw 71 of the bottom lid 17a are engaged by the regulating member 72b without the slide member 70 escaping upward. Reference numeral 73
Is an engaging claw that holds the bottom cover 17a in a closed state by engaging with a projection provided on the front cover 16.

When the bottom cover 17a is closed, the slide member 70 is configured such that the contact piece holding portion 70b is connected to the regulating member 72b.
Further, the lower end is positioned by abutting on the inner surface of the bottom lid 17a. In this positioned state, the piece 68b of the minus contact piece 68 is attached to the contact piece holding portion 70.
b. In this example, the slide member 70 and the engagement claws 71 of the bottom cover 17a serve as the power supply stopping means.

According to this configuration, as shown in FIG.
When the bottom surface of the cartridge storage chamber 13a is closed by the bottom lid 17a, the piece 68b of the minus contact piece 68 contacts the contact holding section 70b, and the minus contact piece 68 comes into contact with the battery holder section 4.
2, the contact portion 68a enters the opening 42a of the battery holder portion 42 and the module battery 39
Is held at the connection position in contact with the negative electrode surface 39a. Therefore, the module circuit is kept energized during the period from shipment of the film unit with the lens to photographing.

When the photographed unit body 2 is submitted to a developing laboratory or the like, and the bottom cover 17a is opened to take out the photographed photographic film cartridge 18, the bottom cover 17a is engaged as shown in FIG. The slide member 70 in which the pawl 71 and the engaging pawl 70a are engaged is slid downwardly of the unit body 2. For this reason, the contact piece holding portion 70b is
b moves downward from the position in contact with
0b, the contact of the piece 68b is released, so the elastically deformed negative contact piece 68 moves with its restoring force in a direction away from the battery holder part 42, and the contact part 68a and the negative electrode surface of the module battery 39. It moves to the cutting position where the contact with 39a is released. As a result, energization of the module circuit is stopped.

The slide member may be biased toward the bottom cover by a spring or the like, and may be slid downward by the bias of the spring when the bottom cover is opened. Also, instead of using a slide member that slides in conjunction with the opening operation of the bottom lid as described above, another configuration using a lever or the like disconnects the contact piece from the connection position in conjunction with the opening operation of the bottom lid. The position may be changed.

In the example shown in FIG. 16, the operation performed to remove the cartridge from the cartridge storage chamber is as follows.
The power supply to the module circuit is stopped in conjunction with the insertion of the jig into the jig insertion opening for opening the bottom cover of the cartridge storage chamber. The same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 16, the bottom lid 17a is held in a state where the bottom of the cartridge accommodating chamber 13a is closed by the engagement of the engaging claws 73 provided on the inner surface with the projections on the front cover 16 side. Further, the bottom cover 17a is provided with a jig insertion opening 77 into which a driver and a dedicated jig are inserted when the bottom cover 17a is opened. In the vicinity of the jig insertion opening 77, a release piece 73a formed integrally with the engagement claw 73 is arranged. When removing the cartridge 18a from the cartridge storage chamber 17a, a driver or a jig is inserted into the jig insertion opening 77 from the bottom side of the unit main body 2, and
The release tab 73a is pressed toward the rear side of the unit body 2 to elastically deform the engagement claw 73, and the engagement between the engagement claw 73 and the projection of the front cover 16 is released to open the bottom cover 17a.

A slide member 74 is provided on the outer wall surface of the cartridge storage chamber 13a as a power supply stopping means. The slide member 74 is provided with a contact piece holding portion 74b that holds the piece 68b of the minus contact piece 68, similarly to the slide member in the example of FIG. The slide member 74 is formed of a hemispherical convex portion 75 provided on the guide plate 72a.
The hemispherical concave portion 76 on the slide member 74 side click-engages. Accordingly, the slide member 74 is positioned at a position where the piece 68b of the minus contact piece 68 is held by the contact piece holding portion 74b, so that the slide member 74 does not move upward during photographing. When a strong force is applied to the slide member 74, the click engagement is released, and the slide member 74 can move upward. The regulating member 72b regulates the sliding of the slide member 74 downward.

When the slide member 74 is positioned by the convex portion 75 and the concave portion 76, the slide member 74 enters the jig insertion opening 77 of the bottom cover 17a closed by the lower end 74a and closes it.

According to this, while the film unit with the lens is shipped from the manufacturer and used for photographing, the minus side contact piece 68 is elastically deformed by the contact piece holding portion 74b and connected in the same manner as in the above embodiment. Since the contact portion 68a is held at the position, the contact portion 68a is kept in contact with the negative electrode surface 39a of the module battery 39, and the module circuit is kept energized.

When the bottom cover 17a is opened to take out the photographed photo film cartridge 18, the operator inserts a jig or the like into the jig insertion opening 77 from the bottom side of the unit body 2. At this time, since the jig insertion opening 77 is closed by the lower end 74a of the slide member 74, the operator applies a force to push up the lower end 74a of the slide member 74 with a jig or the like. Thereby, the slide member 74
The click engagement between the convex portion 75 and the concave portion 76 is released, and the upper portion slides upward, so that a jig or the like can enter the unit main body 2 from the jig insertion opening 77. Thereafter, the release piece 71a is pressed to release the engagement by the engagement claw 73 to open the bottom cover 17a, and then the cartridge 18a is taken out.

On the other hand, when the slide member 74 is slid upward, the contact piece holding portion 74b is
It moves upward from the position in contact with 8b. Thereby, the contact between the piece 68b and the contact piece holding portion 70b is released,
The negative contact piece 68 that has been elastically deformed is
It moves with its restoring force in a direction away from 2 and moves to the cutting position. As a result, the contact between the contact portion 68a and the negative electrode surface 48a is released, and the power supply to the module circuit is stopped.

In the example of FIG. 13, in conjunction with the opening operation of the bottom cover of the cartridge storage chamber, and in the example of FIG. 16, in conjunction with the operation of inserting the jig when opening the bottom cover, the module circuit is connected to the module circuit. Although the energization is stopped, the energization to the module circuit may be stopped in conjunction with an operation or operation for removing another cartridge from the cartridge storage chamber. For example, it is also possible to detect the presence or absence of a cartridge in the cartridge storage chamber, and stop energizing the module circuit when the cartridge is removed from the cartridge storage chamber.

In the example shown in FIG. 17, the winding length of the photographic film is measured, and when the photographic film is wound up by a predetermined length, the energization is stopped. In addition,
In this example, a light-shielding lid closing mechanism is used to measure the length of the rolled-up photo film, and the power is turned on when the roll length of the photo film has reached a length that can be completely accommodated in the cartridge. I try to stop.

In FIG. 17, the cartridge storage chamber 13
a on the upper surface, a light-shielding lid closing mechanism 21
Is arranged. A bearing 78 is formed at the center of the upper surface of the cartridge storage chamber 13a.
The hoisting knob 11 is rotatably attached to the motor. On the lower surface of the winding knob 11, a drive shaft 11a that engages with the spool 18c of the cartridge 18a, and a light-shielding lid closing mechanism 2
1 and an intermittent gear 79 included therein.

A reduction gear 80 and a counter gear 81 are rotatably mounted on the upper surface of the cartridge storage chamber 13a. The reduction gear 80 includes a large-diameter upper gear 80a and a small-diameter lower gear 80b. Each time the hoisting knob 11 makes one rotation, the upper gear 80a intermittently engages with one tooth 79a formed on the intermittent gear 79. The gears are meshed and stepped by a predetermined angle (one tooth). The lower gear 80b meshes with a counter gear 81 that measures the winding length of the photographic film 18b by counting the number of rotations of the winding knob 11. That is, the hoisting knob 11 depends on the rotation angle of the counter gear 81.
The winding length of the photographic film 18b according to the number of rotations is measured.

The counter gear 81 prevents the photo film 18b from rotating accidentally after all the photo films 18b are wound up.
No teeth are formed on the portion facing the reduction gear 80 after the count is completed. A cam disk 82 that rotates together with the counter gear 81 is provided integrally with the upper part of the counter gear 81. A notch 82a (see FIG. 18) is formed on the outer peripheral surface of the cam disc 82 for detecting that the portion from the rotation speed of the winding knob 11 to the tip of the photographic film 18c is stored in the cartridge 18a.

A bearing hole 83 is formed on the upper surface of the cartridge accommodating chamber 13a at a position facing the engaging hole 22 of the light-shielding lid of the cartridge 18a. A member 84 is rotatably mounted. The lid closing member 84 is provided with the engagement hole 2 of the light shielding lid.
2, an engagement shaft 84a inserted into and engaged with
4a, and a locking claw portion 85 integrally formed on the upper portion of the upper portion 4a. The lid closing member 84 is urged by a spring 86 attached to the locking claw 85 toward the closing position of the light shielding lid in a counterclockwise direction in the drawing.

On the upper surface of the cartridge accommodating chamber 13a, an engaging claw 87a for engaging with the locking claw portion 85 of the lid closing member 84 is formed at one end, and at the other end, facing the outer peripheral surface of the cam disk 82. A timing lever 87 provided with a detection projection 87b is swingably attached. Further, the timing lever 87 is integrally provided with a locking arm 87c for locking the contact piece holding lever 88.

The engaging claw 87a of the timing lever 87
The lid closing member 84 is engaged with the locking claw 85 in a state where the lid is in the open position of the light shielding lid. Thereby, the timing lever 87
Is urged clockwise in the figure by a spring 86 via a lid closing member 84, and a detection projection 87b provided at the other end is pressed against the outer peripheral surface of the cam disk 82, and When the projection 87b faces the notch 82a of the cam disk 82, the detection projection 87b enters the notch 82a and swings.

During the production of the lens-fitted photo film unit, the amount of the photo film 18b pulled out from the cartridge 18a and the detection projection 87b of the timing lever 87
And the relative position of the notch 82a of the cam disk 82 with respect to. When the photographic film 18b stored in the film roll chamber 13b is completely wound into the cartridge 18a, the detection projection 87b is inserted into the notch 82a of the cam disk 82.

A contact piece holding lever 88 is mounted on the outer wall surface of the cartridge storage chamber 13a. The upper end portion 88a of the contact piece holding lever 88 protrudes from the upper surface of the cartridge storage chamber 13a and is disposed on the back side of the locking arm 87c of the timing lever 87. Thereby, the contact piece holding lever 8
8 is a holding position in which the lower end portion 88b is brought closer to the battery holder portion 42 by being locked by the locking arm 87c of the timing lever 87 in a state where the detection projection 87b is pressed against the outer peripheral surface of the cam disk 82; The timing lever 8 in a state where the detection projection 87b is inserted into the notch 82a of the cam disc 82.
The lower end portion 88b is locked by the locking arm 87c of 7 so that the lower end portion 88b can be swung between a retreat position where the lower end portion 88b is separated from the battery holder portion 42.

The minus side contact piece 89 has a different shape, but one end is fixed to the module substrate 37 and a contact portion 89b is formed at the other end 89a, as in the embodiment shown in FIG. The side 89a is bent at a predetermined angle in a direction away from the battery holder part 42. The other end 89a of the negative contact piece 89 is in contact with the lower end 88b of the contact piece holding lever 88, and the elastic force of the contact piece holding lever 8 causes the contact piece holding lever 8 to move.
8 is urged in a counterclockwise direction (arrow direction in the figure).

According to this configuration, until all of the photographic film 18b is wound into the cartridge 18a, the detection projection 87b of the timing lever 87 is pressed against the outer peripheral surface of the cam disk 82 as shown in FIG. State is maintained. Further, since the upper end 88a of the contact piece holding lever 88 is locked to the locking arm 87c of the timing lever 87 in this state, as shown in FIG. Is maintained in the holding position against the urging force of the elastic force. As a result, the negative contact piece 89
Is held at a connection position where the contact portion 89b is in contact with the negative electrode surface 39a of the module battery 39 disposed in the battery holder portion 42, and the state where power is supplied to the module circuit is maintained.

When the winding knob 11 is rotated for each photographing operation, the intermittent gear 7 is rotated every time the winding knob 11 rotates once.
9, the gear 79 is rotated by a predetermined angle,
Accordingly, the counter gear 81 is rotated. Then, after the photographing of the last frame is completed, the notch 8 of the cam disk 82 is rotated when the winding knob 11 is rotated until the photographic film 18b is completely wound into the cartridge 18a.
The detection projection 87b of the timing lever 87 faces 2a. Then, as shown in FIG. 20, the timing lever 87 is pressed by the lid closing member 84 urged by the spring 86 to swing, and the detection projection 87b enters the notch 82a. When the timing lever 87 swings, the lid closing member 84
Is released from the open position of the light-shielding lid.
6 is rotated toward the closing position of the light blocking cover in the counterclockwise direction in the drawing, and at the same time, the engagement shaft 84a of the cover closing member 84 is engaged.
Is also rotated to the closed position.

On the other hand, with the swing of the timing lever 87, the locking arm 87c moves to the front of the unit body 2, and the locking position with the upper end 88a of the contact piece holding lever 88 shifts. As a result, as shown in FIG. 21, the contact piece holding lever 8 urged by the elastic force of the minus contact piece 89 is provided.
8 swings from the holding position to the retracted position, and moves the lower end portion 88 b away from the battery holder portion 42. Then, with the movement of the lower end portion 88b, the negative contact piece 89 falls backward so as to separate the contact portion 89b from the battery holder portion 42 by its elastic force. As a result, when the photo film 18b is wound up only in the cartridge 18a, the negative contact piece 89 shifts from the connection position to the cutting position, and the contact between the contact portion 89b and the negative electrode surface 39a is released. Power supply to the module circuit is stopped.

In this example, since the light-shielding cover closing mechanism is used as described above, the power supply is stopped when the photographic film which is completely accommodated in the cartridge is wound up, but the power supply is stopped. The winding length of the photo film may be any time as long as the last photographed frame is longer than the length set behind the aperture. Further, the configuration for measuring the winding length of the photographic film is not limited to the above.

FIG. 22 shows a configuration in which the power supply to the module circuit is stopped by detecting the passage of the leading end of the photographic film in the film passage. In FIG.
The power supply stopping means includes a detection rod 90 and a coil spring 91. The detection rod 90 has a rod shape penetrating a cylindrical light-shielding cover 90b integrally formed with the detection rod 90. One end 90a of the detection rod 90 has a minus contact piece 92a.
Is fixed. The coil spring 91 is passed through the detection rod 90 and disposed between the negative contact piece 92 and the light shielding cover 90b. The outer diameter of the light shielding cover 90b is
1 and one end 90a of the detection rod 90.
Side end face is closed. The light-shielding cover 90b restricts the movement of the coil spring 91 toward the detection end 90c, and also includes a light-shielding cylinder 95 provided around the detection hole 94 in the main body base 13 into which the detection rod 90 is slidably inserted. In cooperation with the above, external light is prevented from entering the film passage 96 from the detection hole 94.

The detection hole 94 is provided in the cartridge storage chamber 13.
The photo film 18b is provided so as to reach the film passage 96 through the wall surface on the front surface of the main body base 13 in the vicinity of a, and to face the lower edge of the photographic film 18b below the film passage 96. Further, on the outer wall surface of the cartridge storage chamber 13b,
A support portion 97 having a keyhole-shaped notch 97a is provided. The detection rod 90 has a detection end 90c in the detection hole 9.
4 and one end 90a side is press-fitted into the notch 97a. As a result, the detection rod 90 is slidably attached to the main body base 13 in the axial direction thereof, and
A coil spring 91 is arranged in a compressed state between the coil cover 91 and the light shielding cover 90b.
It is urged toward.

As described in the first embodiment, the film passage 96 is formed between the main body base 13 and the rear cover 17, and passes behind the aperture 13c to connect the film roll chamber 13b and the cartridge storage chamber 13a. It is formed to connect. By rotating the winding knob 11, the photo film 18b is transported from the film roll chamber 13b to the cartridge 18a in the cartridge storage chamber 13a through the film passage 96.

When the photographic film 18b is located at a position facing the detection hole 94 exposed in the film passage 96, the detection rod 90 is moved to the photographic film 18b whose detection end 90c is supported by the inner surface of the rear cover 17. To abut,
It is held at the holding position moved forward of the main body base 13 against the bias of the coil spring 91. When the leading end (the rear end in the winding direction of the photographic film) of the photographic film 18b passes through the detection hole 94 in the film passage 96, the contact between the detection end 90c and the photographic film 18b is released, so that the detection is performed. The rod 90 is slid by the bias of the coil spring 91 from the holding position to the retracted position moved to the rear of the main body base 13.

The minus side contact piece 92 is fixed to one end of the detection rod 90 as described above. This negative contact piece 9
2 is slid in the front-rear direction of the unit body 2 together with the slide of the detection rod 90. When the detection rod 90 is held at the holding position, one end 92 a of the negative contact piece 92 is connected to a contact (not shown) provided on the back side of the module substrate 37, and the contact part 92 b at the other end is connected to the module battery. 39 are held at the connection positions in contact with the negative electrode surfaces 39a. When the detection rod 90 is moved to the retreat position, the negative contact piece 92 is moved to one end 9.
2a and the contact portion 92b are moved to the cutting positions separated from the contact of the module substrate 37 and the negative electrode surface 39a of the module battery 39, respectively.

As shown in FIGS. 23 and 24, a recess 98 is formed in the inner surface of the rear cover 17 facing the detection end 90c of the detection rod 90a. The amount of movement from the position to the evacuation position is larger than the thickness of the photo film 18b. Thus, when the detection rod 90 moves to the retracted position, the negative contact piece 92 is surely separated from the contact piece of the module substrate 37 and the negative electrode surface 39a.

According to this configuration, as shown in FIG. 23, the photographic film 18b pulled out of the cartridge 18a
Is in the film passage 96, the coil spring 91
The detection rod 90 urged in the step is held at the holding position because the detection end 90c comes into contact with the photo film 18b. Therefore, the minus contact piece 92 fixed to one end 90a of the detection rod 90 is held at the connection position, and the one end 92a is used as a contact on the module board 37, and the contact portion 92b is used as the minus electrode surface 39a of the module battery 39. , Respectively, and the power supply from the module battery 39 to the module circuit is continued.

When the photographic film 18b is wound into the cartridge 18a by continuously rotating the winding knob 11 after the photographing of the last frame is completed, the photographic film 18b is detected in the film passage 96 as shown in FIG. When the tip of the photo film 18b passes through the position of the detection end 90c of the rod 90, the detection rod 90 is slid toward the rear cover 17 by the bias of the coil spring 91 and moves to the retracted position. As a result, the negative contact piece 92 moves to the direction away from the battery holder 42, that is, the cutting position. As a result, one end 92a of the negative contact piece 92 is separated from the contact of the module substrate, and the contact portion 92b is connected to the negative electrode surface 39a.
Further away, the power supply to the module circuit is stopped.

Note that there is a region not used for photographing between the leading end of the normal photographic film and the last photographing frame (the leading photographing frame). It is not necessary to detect the passage of the leading end of the photographic film. Further, the passage of the leading end of the photographic film may be detected by another configuration.

In each of the above embodiments, a transmissive LCD is used as the display means, and the LCD is illuminated with external light to obtain the date light. However, a part of the strobe light is directly incident on the light guide to guide the light. The LCD may be illuminated with the illuminated light, or a light that is turned on each time a picture is taken may be built in the date module and used for illumination. In addition, a display device that emits light by itself may be used. When a lamp or the like is used, the display on the display unit can be invalidated by not turning on the lamp.

In the first embodiment, the power supply is stopped by separating the front cover. However, this is because the unit main body requires the front cover to reload the photo film cartridge and remove the date module. This is because it is necessary to separate the components, and when the component is separated from the unit body, the component that stops supplying power to the module circuit is not limited to the front cover, but may be configured according to the configuration of the unit body. It can be set appropriately.

In each of the embodiments described with reference to FIGS. 13 to 24, when an operation or an operation for taking out a cartridge is performed, or when the winding length of the photographic film reaches a predetermined length, Alternatively, when the passage of the leading edge of the photographic film is detected in the film passage, the power supply to the module circuit is stopped, but the present invention is not limited to this, and the photographing of the last frame of the photographic film is completed. Alternatively, the power supply to the module circuit may be stopped in conjunction with the other operations described above, which are always performed until the cartridge is removed, or the change (operation) of the state of the film unit with the lens. For example, the fact that the last frame is set in the aperture can be detected by the rotation position of the number-of-photographs display plate provided in the counter mechanism. It is also possible to stop the energization of the module circuit by detecting that the shooting up to the frame has been completed.

When the energization is stopped, the energization may be temporarily stopped in addition to the continuous stop as in the above embodiments. Further, in addition to mechanically detecting the operation or operation as described above, the timing of stopping the energization may be detected by an electrical or photoelectric method. The energization may be stopped. For example, the number of actuations of the shutter blades is electrically counted from, for example, the number of times that the synchro switch is turned on. When the counted number, that is, the number of shot frames reaches the number of photographic film-specific shots, the module circuit Switching element connected between module and battery is turned off
The power supply to the module circuit can be stopped.

Furthermore, if the initial time data set in the clock circuit is also encrypted so that the current time and date cannot be set by anyone except the manufacturer, the display control signal is temporarily displayed as "H level" on the LCD. However, since correct display cannot be performed on the LCD even if the display is performed, the display on the LCD can be invalidated in this manner. Alternatively, the encryption may be performed by combining the initial date data and the preset code.

In the above description, an example in which the shooting date is optically copied as data is described. However, the present invention can be used for printing various characters and symbols in addition to the shooting date.

[0119]

As described above, according to the present invention,
With the display of the display means enabled during manufacture, power is supplied to the built-in data imprinting device from the end of taking a photo film to the removal of the photo film cartridge, or reloading of the photo film cartridge or data copying. Display means for stopping the power supply means when the constituent members of the unit body are separated in order to remove the charging device, and detecting that power supply from the battery has started and displaying data to be imprinted. Display is disabled, the display on the date imprinting device will remain disabled until the photo film cartridge is removed or reapplied after disassembly. Is done. Therefore, the unit body cannot be reused irregularly or the data imprinting device cannot be taken out and used. In addition, this makes it possible to improve the collection rate of the unit body to the manufacturer. Further, since the display of the display means can be validated by inputting a predetermined signal, the manufacturer of the film unit with the lens can easily reuse the data imprinting device.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a date module built in a lens-fitted film unit embodying the present invention.

FIG. 2 is a perspective view showing an appearance of a film unit with a lens.

FIG. 3 is an exploded perspective view showing a configuration of a film unit with a lens.

FIG. 4 is a sectional view showing a main part of the date module.

FIG. 5 is a cross-sectional view showing a cross section of the light collector.

FIG. 6 is a perspective view showing an exposure unit.

FIG. 7 is a block diagram showing an electrical configuration of the date module.

FIG. 8 is a waveform chart showing the output of each section of the date module after the start of energization.

FIG. 9 is a block diagram illustrating an electrical configuration of a date module in which display is invalidated by program processing;

FIG. 10 is a flowchart illustrating a process in the example of FIG. 9;

FIG. 11 is a flowchart illustrating a process in an example in which the controller also serves as an energization detecting unit.

FIG. 12 is a perspective view showing an example in which the contact piece is fixed to the date module case and the energization is stopped by separating the front cover.

FIG. 13 is an exploded perspective view showing an example in which power supply is stopped in conjunction with opening of a bottom cover of the cartridge storage chamber.

FIG. 14 is a cross-sectional view showing a state in which the minus contact piece is held at a connection position in the example of FIG.

15 is a cross-sectional view showing a state in which the minus contact piece is shifted to a cutting position in the example of FIG.

FIG. 16 is an exploded perspective view showing an example in which energization is stopped in conjunction with insertion of a jig to open a bottom cover of a cartridge storage chamber.

FIG. 17 is a perspective view showing an example in which the winding length of the photographic film is measured and the energization is stopped.

18 is an explanatory diagram showing a state of the timing lever when the winding length of the photo film has not reached a predetermined length in the example of FIG.

FIG. 19 is a cross-sectional view showing a state in which the minus contact piece is held at the connection position in the state of FIG. 18;

20 is an explanatory diagram showing a state of the timing lever when the winding length of the photo film reaches a predetermined length in the example of FIG.

FIG. 21 is a cross-sectional view showing a state in which the minus contact piece is shifted to a cutting position in the state of FIG. 20;

FIG. 22 is an exploded perspective view showing an example in which the passage of the leading end of a photographic film is detected in the film passage and the power supply is stopped.

FIG. 23 is a cross-sectional view showing a state in which the minus contact piece is held at the connection position in the example of FIG. 22;

FIG. 24 is a cross-sectional view showing a state in which the minus contact piece is shifted to a cutting position in the example of FIG. 22;

[Explanation of symbols]

 2 Unit main body 16 Front cover 17a Bottom cover 18 Photo film cartridge 20 Date module 21 Shield cover closing mechanism 36 LCD 39 Module battery 40, 41, 66, 68, 89, 92 Contact piece 42 Battery holder 43 Pin 45 Connector 53 LCD driver 56 Charge / discharge circuit 57 Waveform shaping circuit 58 D-FF circuit 59 Code check circuit 64 Controller 67 Convex part 70, 72 Slide member 71 Engagement claw 77 Jig insertion opening 87 Timing lever 88 Contact piece holding lever 90 Detection rod 91 Coil spring 96 Film passage

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H020 AA01 CA01 2H101 AA01 AA08 AA13 2H103 AA11 BA03 BA21 BB01 CA01 CA14

Claims (8)

[Claims] 1. A battery and a display circuit including a display means for displaying data to be imprinted on a photographic film using the battery as a power supply. The display circuit is built in the unit main body with the display of the display means enabled during manufacture. A photo film cartridge comprising a photo film and a cartridge for storing the photographed photo film is pre-loaded in the unit main body, and the data displayed on the display means in conjunction with the shutter release operation is provided. In a film unit with a lens having a data imprinting device for imprinting on a photo film, an energization stopping means for stopping the energization of the battery from the battery to the data imprinting device from the end of photographing of the photo film to the removal of the photo film cartridge. And the data imprinting device is powered by the battery. Power supply detecting means for detecting that the power supply has started, and display control means for maintaining the display of the display means in a disabled state in response to detection of the start of power supply by the power supply detecting means, A lens with a data imprinting device, wherein when the energization of the data imprinting device is stopped by the energization stopping means and then the energization is resumed, the display of the display means is maintained in a disabled state. With film unit. 2. The apparatus according to claim 1, wherein said power supply stopping means stops power supply from said battery in conjunction with an operation for taking out a cartridge containing a photographed photo film from a unit body. Film unit with lens with data imprinting device. 3. The power supply stopping means measures the length of the photo film wound up and stored in the cartridge, and stops the power supply from the battery when the photo film of a predetermined length is wound up. 2. The method according to claim 1, wherein
Film unit with lens with data imprinting device described. 4. The lens-equipped film with a data imprinting device according to claim 1, wherein the power-supply stopping means stops power supply from the battery when detecting the end of photographing of the last frame of the photographic film. unit. 5. The apparatus according to claim 1, wherein the power supply stopping means stops power supply from the battery when detecting passage of an end of the photographic film in a film passage where the photographic film is conveyed toward the cartridge. A film unit with a lens having a data imprinting device according to claim 1. 6. A battery and a display circuit including a display means for displaying data to be imprinted on a photographic film using the battery as a power source, wherein the display circuit is built in the unit main body with the display of the display means enabled during manufacturing. A photo film cartridge comprising a photo film and a cartridge for storing a photographed photo film is pre-loaded in the unit body, and the data displayed on the display means is linked to the shutter release operation. In a film unit with a lens having a data imprinting device for imprinting on a photo film, the battery is connected in conjunction with separating a predetermined component from a unit main body for reloading a photo film cartridge or removing the data imprinting device. Means for stopping power supply to the data imprinting device from Rutotomoni, the data imprinting device includes a current detecting means for detecting that the current from the battery is started,
Display control means for maintaining the display of the display means in a disabled state in response to the detection of the start of energization by the energization detection means; Wherein the display of the display means is maintained in an invalidated state when the power is resumed after being stopped by the film unit. 7. The display control means according to claim 1, wherein a predetermined signal from the outside is inputted, so that the display of said display means is activated.
A film unit with a lens with a data imprinting device according to any one of the above. 8. The data imprinting device includes: a connection position at which the display circuit and the battery are electrically connected; and a disconnection at a position separated from at least one of the display circuit and the battery to cut off the electrical connection. 8. A contact piece having a movable position between the connection position and the disconnection position when the power supply is stopped, wherein the power supply stopping means moves the contact piece from the connection position to the disconnection position when the power supply is stopped. 2. A film unit with a lens with a data imprinting device according to item 1.