JPH11142943A - Optical data exposure device and film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a circuit for optically transferring data and to prevent the increase of the size of a film unit with a lens incorporating the circuit. SOLUTION: A data exposure unit 50 for optically transferring the data on a photographic film 25 is constituted in such a manner that a light emitting diode serving as a light source for the data, a data exposure battery 58 serving as a power source used exclusively for the light emitting diode, a data exposure synchro switch 56 and a light guide 59 are assembled on a data exposure circuit board 55 to be unitized. The light emitting diode emits light, in such a manner that the voltage of the data exposure battery 58 provided differently from a stroboscope battery 45 is applied when the data exposure synchro switch 56 is turned on. The data exposure circuit board 55 is arranged between a cartridge chamber 28 and an aperture 29, in an attitude where the surface 55a faces the cartridge chamber 28 of a main body base part 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical data exposure apparatus for optically transferring data onto a photographic film and a film unit with a lens.

[0002]

2. Description of the Related Art A film unit with a lens, in which an unexposed photographic film is stored in a unit body incorporating a simple photographing mechanism, is sold and widely used. The film unit with a lens also includes a built-in strobe device including a strobe discharge tube, a charging circuit, a battery (dry battery), and the like, which is convenient for photographing in a dark place. Each component built in such a film unit with a lens has a simplified structure in order to manufacture the film unit with a lens at low cost and to reduce the size.

In order to further extend the appeal and enjoyment of printed photographs to general users, printed photographs having different aspect ratios are provided depending on the type and size of a photographed subject. Such a print photograph includes a C (classic) size print (89 × 127 mm), which is a conventional standard print size, and a C (classical) size print.
P (Panorama) almost doubled the length of size print
Size prints (89 × 252 mm), H-size prints (89 × 157 mm) whose aspect ratio approximates the aspect ratio of the screen size of a high-definition television, and the like are generally known.

[0004] In order to obtain such print photographs having different aspect ratios from a single photographic film, at the time of photographing, all photographic frames are exposed to the photographic film in a single size, and each photographic frame is photographed. Data that specifies the aspect ratio of the print photo intended by
A method is disclosed in which a PAR (PRINT ASPECT RATIO) mark is recorded outside the exposure range, and when creating a print photograph, the PAR mark is read and each shot is printed at a specified aspect ratio (print range). Have been.

As a light source for exposing optical data such as a PAR mark, a light emitting element having characteristics such as low cost, long life and good responsiveness, for example, a light emitting diode is used. The voltage required for light emission, that is, the rising voltage Vf is about 2 V, and a voltage of 3 V or more is required for stable light emission. For this reason, for example, an inexpensive camera or a film unit with a lens having a built-in strobe device (circuit),
Although a battery as a power supply for the strobe is built in, the voltage was as low as about 1.5 V, so that the light emitting diode could not be directly turned on with this battery.

Therefore, a circuit described in Japanese Patent Application Laid-Open No. 8-248572 is known as a circuit for solving such a problem. According to the circuit disclosed in Japanese Patent Application Laid-Open No. 8-248572, a 1.5 V battery provided for a strobe is used as a power supply to operate an oscillation circuit of a strobe circuit every time a photograph is taken. A voltage equal to or higher than the voltage Vf is extracted, and the light emitting diode emits light at this voltage.

[0007]

When the light emitting diode is made to emit light as described above, the light emitting diode emits light by using the battery of the strobe circuit as a power supply. If the consumption of the battery is large, a phenomenon occurs in which the light emitting diode does not emit light or the amount of light emitted from the light emitting diode decreases. If such a phenomenon occurs, optical data such as a PAR mark cannot be printed on a photographic film, or the density of the optical data becomes low even if it is printed, and the data cannot be read correctly. Occur.

The light emitting diode emits light by using the voltage generated by the oscillation operation of the oscillation circuit. The oscillation cycle of the oscillation circuit changes according to the main capacitor charging voltage. Accordingly, the amount of light emitted from the light emitting diode changes, and there is a problem that the exposure amount of the optical data varies. In order to prevent such variations in the exposure amount, the circuit becomes complicated, the number of components increases, and the manufacturing cost increases.

Further, in the film unit with a lens, as described above, the constituent members are simplified, so that the film unit with a lens is made smaller.
An optical data exposure device for imprinting optical data needs to be appropriately arranged in the film unit with a lens. In addition, since the used film unit with lens is collected and each component is recycled and reused, this optical data exposure apparatus also includes:
It is desired to be reusable and easy to reuse.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide an optical data exposure apparatus capable of stably emitting a light emitting diode with a simple circuit. It is another object of the present invention to provide a lens-fitted film unit incorporating an optical data exposure apparatus that is advantageous for miniaturization and that is easy to reuse.

[0011]

In order to achieve the above object, according to the present invention, a light emitting diode serving as a light source for imprinting data and a voltage required to drive the light emitting diode are provided. It is turned on in synchronization with the exposure battery dedicated for the light emitting diode to output and the operation of the shutter,
Switch means for driving the light emitting diode by applying the voltage of the exposure battery to the light emitting diode.

According to the second aspect of the present invention, the switch means is a data exposure synchro switch that is turned on when a pair of contact pieces come into contact with each other in synchronization with the operation of the shutter. During this period, the voltage of the exposure battery is applied to the light emitting diode. According to the third aspect of the present invention, the switch means is a data exposure synchro switch which is turned on when a pair of contacts come into contact with each other in synchronization with the operation of the shutter, and responds to the ON of the data exposure synchro switch. And a timer circuit for applying the voltage of the exposure battery to the light emitting diode for a certain period of time.

According to a fourth aspect of the present invention, there is provided a synchro switch which is turned on when a shutter is operated to discharge a trigger capacitor in order to generate a trigger voltage for causing a strobe discharge tube to emit light. The switching element applies the voltage of the exposure battery to the light emitting diode in response to turning on of the synchro switch. Further, in the invention according to claim 5, there is provided a synchro switch which is turned on when the shutter is operated to generate a trigger voltage for causing the strobe discharge tube to emit light and discharges the trigger capacitor. A timer circuit that operates in response to the turning on of the synchro switch and applies the voltage of the exposure battery to the light emitting diode for a fixed time.

According to a sixth aspect of the present invention, the light emitting diode, the exposure battery, and the switch are assembled into a data exposure circuit board to form a unit. Claim 7
In the invention described above, the light emitting diode, the exposure battery, and the switch means are mounted on a flash circuit board for a flash having a synchro switch mounted thereon, and the flash circuit board also serves as a data exposure circuit board.

According to the eighth aspect of the present invention, a light emitting diode serving as a light source for imprinting data, an exposure battery dedicated to the light emitting diode for outputting a voltage required to drive the light emitting diode, and the operation of the shutter are synchronized. And turned on to apply a voltage of the battery for exposure to the light emitting diode, and partially or entirely the switch means for assembling and electrically connecting to a plate-shaped data exposure circuit board, and photographing is completed. The data exposure circuit board is positioned between the cartridge chamber and the aperture with one surface of the data exposure circuit board facing an outer wall of a cartridge chamber provided at one end of the aperture for storing a cartridge for storing the photo film. An exposure circuit board is arranged.

[0016]

FIG. 2 shows a lens-fitted film unit embodying the present invention. The film unit 2 with a lens is provided with an optical mark (hereinafter referred to as P
An optical data exposure device for imprinting an AR mark) is provided. The lens-fitted film unit 2 includes a unit main body 3 in which various photographing mechanisms are incorporated and in which a film cartridge is previously loaded, and a label 4 that partially covers the unit main body 3.

A shutter button 6 and a counter window 7 are provided on the upper surface of the unit body 3, and a lever 12, which will be described later, is provided on the front surface in addition to a photographic lens 9, a charging button 10, a strobe light emitting unit 11, and the like. . On the back side of the unit body 3, a hoisting dial 13 is exposed. The label 4 has an adhesive applied to its rear surface and is attached to the central portion of the unit main body 3, and the counter window 7, the objective window 8 a of the finder 8, the photographing lens 9, and the like are exposed to the outside through openings provided in each portion. Let me.

The lever 12 is operated when setting a print range, and is slidable along the elongated hole 14. On the label 4, symbols C (C size print range), P (Panorama print range), and H (H size print range) indicating the position of the lever 12 when each print range is set around the long hole 14 are shown. Printed. The objective window 8a of the finder 8 is formed with an aspect ratio corresponding to an H size print (89 × 158 mm).

FIG. 1 is an exploded perspective view of the unit main body 3. The unit main body 3 includes a main body base 16 and an exposure unit 1.
7, strobe unit 18, front cover 19, rear cover 2
0, a field switching plate 21 incorporated between the main body base 16 and the front cover 19 to switch the field of view of the finder 8 to a field corresponding to the specified print range. And an optical data exposure device that prints a PAR mark corresponding to the print area on the photographic film 25.

At both ends of the main body 16, a film roll chamber 26 for accommodating a film roll in which an unexposed photographic film 25 is rolled, and a photographed photographic film 2
A cartridge chamber 28 for storing a cartridge 27 in which the cartridge 5 is wound is formed. An aperture 29 is formed between the film roll chamber 26 and the cartridge chamber 28 to define an exposure range on the film surface of the photographic film 25. Around the aperture 29, a light-shielding cylinder 30 projecting forward is provided. ing. Below the aperture 29, two openings 31, 32 for imprinting a PAR mark outside the exposure range of the photographic film 25 defined by the aperture 29 are formed.

On the upper part of the cartridge chamber 28, a hoisting dial 13 is rotatably arranged. The hoisting dial 13 has a shaft integrally provided at a lower portion thereof engaged with one end of a spool 27 a of a cartridge 27 housed in a cartridge chamber 28. By rotating the winding dial 13 in the counterclockwise direction in the drawing, the photographed photo film 25 is wound into the cartridge 27.

The exposure unit 17 includes a shutter mechanism, a film stopping mechanism, a finder 8 and the like assembled to a base 33. A lens holder 34 for holding the taking lens 9 is attached to the front surface of the base 33. A support shaft 34a provided integrally with the lens holder 34
, A field switching plate 21 is attached rotatably. The exposure unit 17 is mounted on the front surface of the light-shielding cylinder 30. Further, a shutter blade 35 (see FIG. 4) and the like are incorporated between the lens holder 34 and the base portion 33, and the shutter blade 35 is formed integrally with the shutter blade 35.
5a protrudes from the arc-shaped long hole 34b of the lens holder 34.

The front cover 19 has a shutter button 6, a charging button 10, a long hole 14, an objective window 8a, and the like, and is assembled to the front side of the main body base 16 so as to cover the exposure unit 17. The rear cover 20 is a photo film 2
5 and the cartridge 27 are accommodated in the film roll chamber 26 and the cartridge chamber 28, respectively. After this, the bottom cover 3 is attached to the bottom of the cover 20.
8 and 39 are formed, and the bottoms of the film roll chamber 26 and the cartridge chamber 28 are light-tightly closed by the bottom lids 38 and 39.

A strobe unit 18 as a strobe device
Is a strobe circuit board 40 provided with a well-known wiring print including a printed contact pair 46a, a strobe light emitting unit 11, a main capacitor 42, battery holders 43a and 43b, a synchro switch 44, The strobe unit 18 is supported by the battery holders 43a and 43b, and supplies power via the battery holders 43a and 43b. The strobe unit 18 has a 1.5V electromotive force as a power supply, and also charges the main capacitor 42 with a high voltage. And various electric parts.

Behind the charge button 10, a metal contact 46b constituting the charge switch 46 together with the printed contact pair 46a is arranged. 46b is a printed contact pair 46
By contacting a, the charge switch 46 is turned on. The sync switch 44 includes a pair of metal contact pieces 44.
a, 44b.

The field switching plate 21 limits the field of view of the objective window 8a corresponding to the field of view of the H size print in accordance with the designated print range. The panorama field of view opening (89 × 252 mm) corresponds to the panorama print (89 × 252 mm). 2
1a and a C size field opening 21b corresponding to a C size print (89 × 127 mm) are formed around the center of the rotation axis, and an arc-shaped notch 21c exposing the photographing lens 9 is formed. . The lever 12 is integrally formed on the front surface of the visual field switching plate 21.

When the lever 12 is at the H position, the field switching plate 21 is retracted from the objective window 8a, so that the viewfinder 8 has a field range corresponding to H size printing. When the lever 12 is at the C position, the C-size field opening 21b is connected to the objective lens of the finder 8 and the objective window 8a.
Is limited by the C-size field opening 21b, and the finder 8 has a field of view corresponding to the C-size print. Further, when the lever 12 is at the P position, the panoramic field opening 21a is inserted between the objective lens of the finder 8 and the objective window 8a, and is limited by the panoramic field opening 21a, so that the finder 8 supports panoramic printing. The viewing range. Although not shown, the visual field switching plate 21 has an H position, a C position, and a P position.
A click mechanism or the like for correctly setting the position is provided.

The optical data exposure apparatus uses the above-described opening 3
In addition to 1 and 32, the data exposure unit 50 and mark switching means are provided. The mark switching means includes an opening 31,
32 is opened and closed to select the mode of imprinting the PAR mark. A sheet-like mark switching plate 51 provided in a groove formed around the openings 31 and 32, and one end of the mark switching plate 51 Is connected to the interlocking lever 52
Consists of The mark switching plate 51 has an opening window 51a.
Are formed.

The other end of the interlocking lever 52 is connected to the lower part of the visual field switching plate 21, and slides the mark switching plate 51 in the left and right direction according to the rotation of the visual field switching plate 21 by operating the lever 12. Then, the user moves the opening window 51a with respect to the openings 31 and 32 to select the printing mode of the PAR mark.

When the lever 12 is in the H position, the opening windows 51a of the mark switching plate 51 are
The openings 31 and 32 are closed on both sides of the mark switching plate 51 with the opening window 51a therebetween. When the lever 12 is moved to the position C, the opening window 51a is moved to a position facing the opening 32, and the mark switching plate 51 is moved to a position retracted from the opening 31, so that both the openings 31, 32 are exposed. Is done. further,
When the lever 12 is set to the P position, the opening window 51a is retracted from each of the openings 31 and 32, and only the opening 32 is closed at one end of the mark switching plate 51, and only this opening 31 is exposed.

Thus, when the lever 12 is in the H position, P
AR mark dot is not imprinted, PAR at C position
Two dots are imprinted as marks on the photographic film 25, and one dot is imprinted as a PAR mark at the P position.

FIG. 3 shows the data exposure unit 50. The data exposure unit 50 is a flat data exposure circuit board 55 having a printed wiring on one surface 55a.
A data exposure synchro switch 56 attached to the data exposure circuit board 55; a light emitting diode 57 serving as a light source of a PAR mark;
And a light guide 5 for guiding the light of the light emitting diode 57 to the openings 31 and 32.
9 mag.

A synchro switch 56 for data exposure as a switch means includes a pair of metal contact pieces 56a, 56b.
And a holder 56c for holding the pair of contact pieces 56a and 56b at a predetermined interval. The data exposure synchro switch 56 includes a contact piece 5 protruding from the holder 56c.
One end of 6a, 56b is fixed to the data exposure circuit board 55 by being passed through the hole of the data exposure circuit board 55 and soldering to the land on the surface 55a side. The data exposure synchronizing switch 56 is turned on when the contact pieces 56a and 56b come into contact when the shutter blade 35 is fully opened, as described later.

The light emitting diode 57 has, for example, a rising voltage Vf of about 2.0 V. Each terminal is passed through a hole of the data exposure circuit board 55, and
The data exposure circuit board 5 is soldered to the land 5a side.
5 is fixed. As the data exposure battery 58, a flat (coin-type or button-type) battery whose electromotive force is higher than the rising voltage Vf, for example, 3V, is used. The data exposure battery 58 is supported by a metal battery holder 60 having one end soldered to the data exposure circuit board 55. The data exposure battery 58 is connected to the battery holder 60 with one electrode in contact and the other electrode directly in contact with the land of the data exposure circuit board 55, via the data exposure sync switch 56. A voltage is applied to the light emitting diode 57. The light emitting diode 57 emits light at the voltage of the data exposure battery 58 while the data exposure synchronization switch 56 is ON.

The light guide 59 is attached to the lower part of the data exposure circuit board 55 near the light emitting diode 57 by a pair of shafts 59a formed integrally therewith. Light from the light emitting diode 57 is incident on the incident surface 61 of the light guide 59, passes through the inside of the light guide 59, and is emitted from the emission surface 62.

As shown in FIG. 1, the data exposure unit 50 configured as described above has an aperture 3 on which the exposure unit 17 is mounted via a light shielding tube 30 on the front surface.
0 and the cartridge chamber 28, the surface 55a of the data exposure circuit board 55 is in the width direction of the film unit 2 with the lens, that is, the surface 55a is in the cartridge chamber 28.
It is assembled so that it faces. The light guide 59 is disposed below the exposure unit 17, and its exit surface 62 has the openings 31,
32. The data exposure synchro switch 56 is disposed above the pin 35 a on the front surface of the lens holder 34.

As described above, the data exposure unit 50
Is incorporated in the unit main body 3, thereby reducing the space for arranging the data exposure unit 50 and making the film unit with lens 2 compact.

FIG. 4 schematically shows the shutter blade 35, the synchro switch 44, and the data exposure synchro switch 56. In FIG. 4, the lens holder 34 is omitted. The shutter blade 35 is rotatably attached to a shaft 33 a formed on the front surface of the base portion 33, and has an exposure window 66 between the aperture 29 and the photographing lens 9.
Is swung between a closed position in which the exposure window 66 is opened and a closed position in which the exposure window 66 is opened.

The shutter blade 35 is urged in the counterclockwise direction in FIG. 4 with one end of a return spring 65 hooked on its pin 35a. The rest of the shutter blade 35 is closed as shown in FIG. , The exposure window 66 is shielded by a blade 67.

The arm 69 moves rightward in the figure by the urging force of a shutter driving spring (not shown) in response to the operation of the shutter button 6, and during this movement, a projection 68 provided on the upper portion of the shutter blade 35. Kick off This causes the shutter blade 35 to resist the urging of the return spring 65, as shown in FIG.
As shown in FIG. 5, the blade 67 is retracted from the exposure window 66 to open the exposure window 66 completely. Then, after fully opening the exposure window 66, the shutter blade 35 reaches the open position serving as the turning point, and the return spring 65
To return to the closed position.

As shown in FIG. 4B, when the shutter blade 35 reaches the open position, the synchronizing switch 44 presses the pressing piece 70 provided integrally with the shutter blade 35.
As a result, the upper contact piece 44a is elastically deformed downward and comes into contact with the lower contact piece 44b to be turned ON.

One data exposure cyclochrome switch 5
6, the lower contact piece 56b is disposed on the movement locus of the pin 35a projecting from the long hole 34b, and when the shutter blade 35 reaches the open position, the lower contact piece 56b is 56a is elastically deformed upward and comes into contact with the upper contact piece 56b to be turned ON. This allows
The data exposure synchro switch 56 is turned on each time shooting is performed, that is, each time the shutter performs one opening and closing operation.

FIG. 6 shows a circuit diagram of the film unit with the lens. As shown in FIG. 6A, the circuit (strobe circuit) of the strobe unit 18 is provided in the strobe light emitting unit 11 in addition to the main capacitor 42, the synchro switch 44, the battery 45, and the charge switch 46 described above. It comprises a strobe discharge tube 75, an oscillation transistor 76, an oscillation transformer 77, a neon tube 78, a trigger capacitor 79, a trigger coil 80, and the like.

Oscillation transistor 76 and oscillation transformer 7
Reference numeral 7 denotes a booster circuit for converting a low voltage of the battery 45 into a high voltage. The booster circuit operates while the charging switch 46 is ON, and the secondary coil 77b of the oscillation transformer 77 is connected to the primary coil 77a. A high voltage is generated according to the turn ratio.
The charging current due to this high voltage flows through the rectifying diode 81, and the main capacitor 42 and the trigger capacitor 7
9 is charged.

As described above, when the synchro switch 44 is turned on, the charged trigger condenser 79 is discharged, and at this time the trigger voltage generated by the trigger coil 80 is applied to the strobe discharge tube 75 via the trigger electrode 75a. As a result, the main condenser 42 is discharged inside the strobe discharge tube 75. Thereby, the strobe discharge tube emits light, and the strobe light is emitted from the strobe light emitting unit 11.

As shown in FIG. 6 (b), the circuit (data exposure circuit) of the data exposure unit 50 is independent of the above-mentioned strobe circuit, and the above-mentioned data exposure synchro switch 56, light emitting diode 57, data Exposure battery 58
Consists of When the data exposure synchro switch 56 is turned on, the light emitting diode 57 causes the data exposure battery 5 to pass through the data exposure synchro switch 56.
The voltage of 8 is applied to emit light.

As described above, by providing the data exposure battery 58 to emit light from the light emitting diode 56, the configuration of the data exposure circuit is simplified and the number of parts is reduced, so that the manufacturing cost is reduced. Can be.

Next, the operation of the above configuration will be described. When taking a picture, first, the winding dial 13 is rotated. As a result, the photo film 25 is wound up by one frame, shutter charging is performed, and the arm 64 rides over the projection 68 of the shutter blade 35 against the bias of the shutter driving spring, and the left side of the projection 68 in FIG. Locked in the position moved to. Thereafter, the photographer operates the lever 12 to operate H, C, P according to the configuration of the subject and the like.
Set to any position of.

By operating this lever, the visual field switching plate 21 is rotated, and the visual field range of the finder 8 is changed.
Becomes the field of view of the print range specified by Also,
With the rotation of the field switching plate 21, the mark switching plate 51 is slid via the connecting lever 52 to a position corresponding to the designated print range.

The photographer presses the shutter button 6 after performing framing by looking through the viewfinder 8. When performing flash photography, the charge button 10 is pressed, and the shutter button 6 is pressed after charging is completed. When the charge button 10 is pressed, the charge switch 46 is turned on, the booster circuit is operated, and the main capacitor 42 and the trigger capacitor 79 are charged. When the charging voltage of the main capacitor 42 reaches a predetermined charging voltage,
The neon tube 78 starts blinking. The photographer can know that the charging is completed by the flashing of the neon tube 78. Actually, the neon tube 78 starts blinking at a voltage lower than a specified charging voltage at which the designed strobe light amount can be obtained, and the blinking becomes faster as the charging voltage of the main capacitor 42 increases. Therefore, the photographer presses the shutter button 6 after the neon tube 78 blinks sufficiently quickly.

When the shutter button 6 is pressed, the arm 6
The lock of 4 is released, and the arm 64 moves in the direction of the protrusion 68 by the urging force of the shutter drive spring, and during this movement, the protrusion 68 is vigorously kicked off. As a result, the shutter blade 35 rotates clockwise from the closed position shown in FIG.
The exposure window 66 closed by the blade 67 is opened by rotating to the open position shown in FIG. Thereafter, the shutter blade 35
b starts rotating counterclockwise by the bias of the return spring 65, returns to the closed position, and closes the exposure window 66 with the blade portion 67.

When the shutter blade 35 reaches the open position during the rotation of the shutter blade 35, the sync switch 4
One of the contact pieces 44a is pressed by the pressing piece 70 rotating together with the shutter blade 35 to be elastically deformed and comes into contact with the other contact piece 44b. As a result, the synchro switch 44 is turned on, and at this moment, the trigger capacitor 44 is turned on.
Is discharged, the trigger voltage generated by the trigger coil 80 is applied to the strobe discharge tube 75, the main capacitor 42 is discharged, and the strobe light is emitted from the strobe discharge tube 75.

At the same time, one contact piece 56a of the data exposure synchronizing switch 56 is connected to the shutter blade 35.
Of the other contact piece 56
Contact with b. As a result, the data exposure synchro switch 56 is turned on.
The voltage of the data exposure battery 58 is applied to the light emitting diode 57, and the light emitting diode 57 emits light.

The contact piece 44 of the sync switch 44 and the contact piece 56a of the data exposure sync switch 56 are restored by the elasticity of the shutter blade 35 when the shutter blade 35 is rotated toward the closed position. Then, the sync switch 44 and the data exposure sync switch 56 are turned off.

As described above, while the data exposure synchronizing switch 56 is ON, the light emitting diode 5
The light emitted from the light guide 7 is incident on the light incident surface 61 of the light guide 59, and is transmitted from the light exit surface 62 of the light guide 59 to the openings 31,.
Irradiation toward 32. And these openings 31,
Since the mark switching plate 51 is set at a position corresponding to the print range designated by the lever 12 between the exit 32 and the exit surface 62, the mark switching plate 51 is opened from the opening corresponding to the designated print range among the openings 31, 32. The light of the light emitting diode 57 reaches the lower side of the exposure range of the photographic film 25, and the number of dots corresponding to the designated print range is transferred to the photographic film 25 as a PAR mark.

For example, if the image is taken with the lever 12 in the C position, as shown in FIG. 6A, two dots 8 as a PAR mark are provided below the exposure range of the photographic film 25.
0a and 80b are imprinted. When the image is taken with the lever 12 in the P position, as shown in FIG. 6B, one dot 80a is imprinted as a PAR mark on the lower side of the exposure range of the photographic film 25 and the H position. 6C, no dot is printed as a PAR mark below the exposure range of the photographic film 25, as shown in FIG. 6C.

Since the light emitting diode 57 emits light by the data exposure battery 58 which is different from the battery 45 of the strobe circuit, charging is performed unnecessarily frequently in the strobe circuit and the voltage of the battery 45 decreases. Have no effect. Therefore, the photo film 25
The exposure amount of the dots 31 and 32 of the PAR mark to be printed on the PAR mark is stable.

When the film unit 2 with the lens, in which all the frames have been photographed, is submitted to the developing laboratory, the photographic film 2
5 is set in the printer after the development processing. The printer reads, for each frame, the number of PAR mark dots projected outside the exposure range of the photographic film 25 using a sensor or the like, and creates a printed photograph corresponding to the read number of dots.

Each component of the unit body 3 from which the photo film 25 has been removed is recycled or reused. The strobe unit 18 is reused after a function test and cleaning of the strobe light emitting unit 11. Also,
The data exposure unit 50 is reused after a function test. At the time of this function inspection, the data exposure unit 50
Is assembled into a single data exposure circuit board 55 and unitized, so that a functional test can be easily performed. Further, since the strobe unit 18 and the data exposure unit 50 are independent, even if one of the units has a functional failure, it is not necessary to reuse only the failed unit. Efficiency can be increased.

In the above embodiment, the data exposure synchro switch 56 is turned on by the pin 35a of the shutter blade 35 on which the return spring is set. It is only necessary to turn on in synchronization with the operation of. Therefore, for example, the one contact 56a of the data exposure synchronizing switch 56 may be elastically deformed by the blade 67 of the shutter blade 35 so as to be brought into contact with the other contact 56b.

FIGS. 7 and 8 show an example in which a flash sync switch is also used as a data exposure sync switch. Except for what is described below, the present embodiment is the same as the above-described embodiment, and thus the same components are denoted by the same reference numerals and description thereof will be omitted.

As shown in FIG. 7, the data exposure circuit includes a data exposure battery 58.
An NPN transistor 85 is connected between the light emitting diode 57 and the light emitting diode 57 as a switching element instead of the data exposure synchronizing switch 56 of the above embodiment. The transistor 85 has its base terminal connected to the synchro switch 44 of the strobe circuit via the protection diode 86, so that the data is transmitted through the synchro switch 44 and the ground of the strobe circuit (negative electrode side of the battery 45). It is connected to the positive electrode of the exposure battery 58. The protection diode 86 turns on the transistor 85 when the synchro switch 44 is turned on.
Is prevented from being applied to the transistor 85 to prevent the transistor 85 from being broken.

As shown in FIG.
5, the protection diode 86 is a circuit board 5 for data exposure.
The connection between the strobe circuit and the data exposure circuit is made by two lead wires 87.

According to this, at the time of photographing, the shutter blade 35
Is turned to the open position and the synchro switch 44 is turned on, the transistor 85 receives the base current from the data exposure battery 58 through the synchro switch 44 and turns on the transistor 85.
N (a state in which the collector-emitter conducts). Thus, the light emitting diode 57 is connected to the data exposure battery 5.
The voltage of 8 is applied to emit light.

Then, with this configuration,
The component cost can be reduced by the amount that the data exposure sync switch 56 becomes unnecessary. In addition, since the shutter blade 35 only turns on the synchro switch 44 during its rotation, the influence on the opening and closing operation of the shutter blade 35 can be reduced. Further, even in this case, even if any one of the units has a functional failure, the lead 87 is disconnected to disconnect the failed unit from the other non-failed unit and reuse the non-failed unit. Therefore, it is possible to increase the efficiency of reuse of the components of the film unit with a lens.

FIG. 9 shows an example in which a flash circuit board is also used as a data exposure circuit board. The flash circuit and the data exposure circuit are the same as those shown in FIG. Also, the same reference numerals are given to the same components as those in the above-described embodiment, and the description thereof is omitted.

Under the strobe circuit board 40, battery holders 43a, 4 for holding batteries 45 of the strobe circuit are provided.
3b and one battery holder 43
b, a battery holder 88 for holding the data exposure battery 58 is provided. That is, the data exposure battery 5
Reference numeral 8 supplies power to the data exposure unit via the battery holders 43b and 88. In this manner, the negative electrode of the flash battery 45 and the positive electrode of the data exposure battery 58 are in contact with the battery holder 43b.

A light emitting diode 57 is provided on the back side of the strobe circuit board 40, and a transistor 8 is provided on the front side.
5, a protection diode 86 and the like are arranged. And
The light emitted from the light emitting diode 57 when the synchro switch 44 is turned on enters the light guide 59. Note that the light guide 59 may be attached to the strobe circuit board 40 or to the main body base 16.

This eliminates the need for a circuit board for data exposure, thereby reducing the size of the lens-fitted film unit 2. In this case, since one strobe unit and one data exposure unit are provided on the strobe circuit board 40, if there is no problem in both functions of the strobe unit and the data exposure unit, this strobe circuit circuit board 40 is used. And the parts assembled to this are reused. For example, if each unit of the data exposure circuit is mounted on a small board and the unitized one is mounted on the strobe circuit board 40, the data exposure circuit and the Since the strobe circuit can be separated, the efficiency of reuse can be increased.

FIG. 10 shows an example in which the light emission time of the light emitting diode, that is, the exposure amount of the dot of the PAR mark is made more stable. The other parts described below are the same as in the first embodiment.

In this example, a timer circuit 90 is provided in the data exposure circuit 90 which is turned ON for a certain period of time after the data exposure synchro switch 56 is turned ON.
The timer circuit 90 includes a capacitor 90a that is charged by the current from the data exposure battery 58 when the data exposure synchro switch 56 is turned on, and a transistor 90b that is turned on by the charged voltage of the capacitor 90a.
And a resistor 90c connected to the transistor 90b.
90d.

According to this, when the data exposure synchronizing switch 56 is turned on, the capacitor 90a is instantaneously charged by the data exposure battery 58, and after this charging, the charging voltage of the capacitor 90a is given as the base voltage of the transistor 90b. And the transistor 90b is turned on.
(A state in which conduction between the emitter and the collector occurs). As a result, the voltage of the data exposure battery 58 becomes
The light is applied to the light-emitting diode 57 via Ob, and the light-emitting diode 57 emits light.

The capacitor 90a includes resistors 90c and 90d
And discharges via the transistor 90b which is turned on, and lowers the effective charging voltage at a drop rate according to the time constant determined by the capacitor 90a and the resistors 90c and 90d. It turns off after a certain time determined by the constant. Thereby, the light emitting diode 57 is turned off.

As a result, even if the time during which the data exposure synchronizing switch 56 is ON varies,
Since the light emitting diode 57 emits light for a fixed time, P
The exposure amount of the dots 31 and 32 to be printed as the AR mark becomes constant.

The strobe circuit described in each of the above embodiments is merely an example. For example, a strobe circuit may be configured as shown in FIG. It is to be noted that the same reference numerals are given to substantially the same components as the above embodiments. In this strobe circuit, positive charging is performed, and O is used instead of the charge button.
A charging lever (not shown) that slides between the N position and the OFF position is used. When the charging lever is in the ON position, the charging switch 46 is turned on to charge the main capacitor 42, and the light emission selection switch 93 is turned on, so that the discharge of the trigger capacitor 79 is allowed and the strobe light emission is performed. Permissible. When the charging lever 46 is in the OFF position, the charging switch 46 and the light emission selection switch 93 are each turned OFF, charging is stopped, and the discharge of the trigger capacitor 79 is prevented, so that strobe light emission is prohibited.

The strobe circuit is provided with a charge stop circuit comprising a Zener diode 95 and a transistor 96. When the main capacitor 42 is charged to a specified charge voltage while the charge switch 46 is ON, the Zener diode is turned off. A zener current flows through the diode 95, turning on the transistor 96. As a result, the oscillation transistor 76
And the booster circuit including the oscillation transformer 77 is stopped. Then, when the main capacitor 42 causes its internal discharge or Zener current to flow, its charging voltage decreases, the Zener current stops flowing, and the transistor 96 is turned off.
The booster circuit starts operating again. Thus, while the charge switch 46 is ON, the operation and stop of the booster circuit are repeatedly performed at high speed, and the main capacitor 42
Is maintained at the specified charging voltage.

When the strobe circuit is constructed as shown in FIG. 11, the data exposure circuits shown in FIGS. 5B and 10 can be used. It can also be used as an exposure synchro switch. For example, FIG.
In FIG. 11, the synchro switch 44 of the flash circuit of FIG. 11 is also used as a data exposure synchro switch of a data exposure circuit having a timer circuit 90.

Instead of the neon tube 78, a light-emitting diode 97 may be used to indicate the completion of charging, as shown in FIG. The light emitting diode 97 is connected to the tertiary coil 77c of the oscillating transformer 77, the voltage of which is proportionally increased as the charging voltage of the main capacitor 42 increases.
And is turned on when the specified charging voltage is reached.

In each of the above embodiments, the case where the flash unit is built in is described. However, when the data exposure unit is provided with a sync switch for data exposure, the data exposure unit is built in the flash unit. It can be used for film units with lenses that are not used.

In each of the above embodiments, the case where the PAR mark for designating the print range is printed on the photographic film as the optical data has been described. However, the optical data includes the photographic date such as the photographic date, the aperture value, and the shutter speed. It may be information. Further, in the above description, the film unit with a lens has been described, but the present invention is not limited to this, and can be used for a camera.

[0081]

As described above, according to the data exposure apparatus of the present invention, the voltage of the exposure battery dedicated to the light-emitting diode is applied to the light-emitting diode serving as a light source for imprinting data. Since the switch means is turned on in synchronization with the operation to apply and drive, the circuit configuration is simplified, the number of parts can be reduced, and light emission is not affected by the strobe device. The diode can emit light stably. As a result, the exposure amount of data can be kept constant. Also, by assembling the light emitting diode, the exposure battery, and the switch means on the data exposure circuit board to form a unit, reuse can be performed easily, and the efficiency of reuse can be increased. Furthermore, if the light emitting diode is made to emit light for a certain period of time using a timer, the data exposure amount can be further stabilized.

Further, according to the film unit with lens of the present invention, the plate-shaped data exposure circuit board on which the light emitting diode, the exposure battery dedicated to the light emitting diode and the switch means are assembled is mounted on the aperture of the lens unit with film and the cartridge room. During this time, the optical data exposure apparatus can be incorporated without increasing the size of the lens-fitted film unit since the cartridge unit is disposed with its one surface facing the outer wall of the cartridge chamber. In addition, since the light emitting diode, the exposure battery, and the switch are assembled into a unit by assembling the data exposure circuit board, reuse can be easily performed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an exploded view of a film unit with a lens embodying the present invention.

FIG. 2 is an external view of a film unit with a lens.

FIG. 3 is an exploded perspective view showing a data exposure unit.

FIG. 4 is an explanatory diagram illustrating the operation of a data exposure synchro switch and a synchro switch.

FIG. 5 is a circuit diagram showing a strobe circuit and a data exposure circuit.

FIG. 6 is an explanatory diagram showing a PAR mark imprinted on a photo film.

FIG. 7 is a circuit diagram showing a flash circuit and a data exposure circuit of an example showing an example in which a flash sync switch is also used as a data exposure synchro.

FIG. 8 is a perspective view showing a strobe unit and a data exposure unit of FIG. 7;

FIG. 9 is a perspective view showing an example in which a data exposure circuit is provided on a flash circuit board.

FIG. 10 is a circuit diagram of a data exposure circuit in which a timer circuit is provided in the data exposure circuit.

FIG. 11 is a circuit diagram showing a strobe circuit having another circuit configuration.

12 is a circuit diagram showing a flash circuit and a data exposure circuit in an example in which a flash sync switch is used as a data exposure synchro in the flash circuit of FIG. 11;

FIG. 13 is a circuit diagram showing an example in which charging completion is displayed by a light emitting diode.

[Explanation of symbols]

 12 lever 17 strobe unit 40 strobe circuit board 44 synchro switch 45 battery 50 data exposure unit 55 data exposure circuit board 56 data exposure synchro switch 57 light emitting diode 58 data exposure battery 59 light guide 90 timer circuit

Claims (8)

[Claims] An optical data exposure apparatus for optically imprinting data on a photographic film every time after photographing, a light emitting diode serving as a light source for imprinting data, and a voltage required for driving the light emitting diode An exposure battery dedicated to a light-emitting diode that outputs the same, and switch means that is turned on in synchronization with the operation of a shutter and applies and drives the voltage of the exposure battery to the light-emitting diode. Optical data exposure equipment. 2. The data exposure synchro switch, which is turned on when a pair of contact pieces come into contact with each other in synchronization with the operation of a shutter, while the switch is turned on. 2. The optical data exposure apparatus according to claim 1, wherein a voltage of the exposure battery is applied to the light emitting diode. 3. The data exposure synchro switch, which is turned on when a pair of contacts come in contact with each other in synchronization with the operation of a shutter, and operates in response to the data exposure synchro switch being turned on. 2. The optical data exposure apparatus according to claim 1, further comprising a timer circuit for applying a voltage of the exposure battery to the light emitting diode for a predetermined time. 4. A synchro switch which is turned on when a shutter is operated to discharge a trigger capacitor to generate a trigger voltage for causing a strobe discharge tube to emit light, wherein said switch means turns on said synchro switch. 2. The optical data exposure apparatus according to claim 1, further comprising: a switching element for applying a voltage of the exposure battery to the light emitting diode in response to the switching. 5. A synchro switch which is turned on when a shutter is operated to discharge a trigger capacitor to generate a trigger voltage for causing a strobe discharge tube to emit light, wherein said switch means turns on said synchro switch. 2. The optical data exposure apparatus according to claim 1, further comprising: a timer circuit that operates in response to the control signal and applies a voltage of the exposure battery to the light emitting diode for a predetermined time. 6. The optical data exposure according to claim 1, wherein the light emitting diode, the exposure battery, and the switch are assembled into a unit by being assembled to a data exposure circuit board. apparatus. 7. The strobe circuit board for a strobe to which the synchro switch is mounted, wherein the light emitting diode, the exposure battery, and the switch unit are mounted.
6. The optical data exposure apparatus according to claim 4, wherein said strobe circuit board also serves as said data exposure circuit board. 8. A cartridge chamber for accommodating a cartridge for accommodating a photographed photo film is provided at one end of an aperture for determining an exposure range, and an outer wall of the cartridge chamber is provided with a main body base projecting in a semi-cylindrical shape on the front side. In a film unit with a lens having a built-in optical data exposure device for optically imprinting data on a photographic film after each photographing, a light emitting diode serving as a light source when data is imprinted and the light emitting diode are driven. A part or all of the switch means for turning on in synchronization with the operation of the shutter and the operation of the shutter dedicated to the light emitting diode for outputting a necessary voltage and applying the voltage of the battery for exposure to the light emitting diode Is mounted on a data exposure circuit board having a flat shape and electrically connected thereto. The data exposed circuit in a posture with its one surface of the substrate, the lens-fitted photo film unit, characterized in that a said data exposure circuit board between said aperture and said cartridge chamber.