JPH0915712A - Data imprinting device for camera - Google Patents

Abstract

PURPOSE: To make a camera advantageous in terms of miniaturization and to imprint complicated characters by directly irradiating photographic film with light from plural light emitting diodes arranged to be opposed just before the photographic film. CONSTITUTION: An LED substrate 40 on which an LED array 30 is mounted is incorporated in a camera body 10 on a front side from a film passage 14, and respective LEDs 31 to 37 are arranged side by side in a direction(width direction) orthogonally crossed with the feeding direction of the photographic film 17. Then, the LED array 30 is arranged just before the emulsion surface 17c of the film 17 so that respective light emitting surfaces 31a to 37a may approach to the film 17. At the time of recording, the respective end face light emitting type LEDs 31 to 37 radiate output light in a thin belt-like rectangular pattern to the film 17. In such a case, the LEDs 31 to 37 are arranged in a line so that the long side direction of the cross section of the output light may be aligned with the width direction of the film 17 and the short side direction thereof may be aligned with a direction along the feeding direction(longitudinal direction) of the film 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data imprinting device for a camera that imprints data such as dates and characters on a photographic film.

[0002]

2. Description of the Related Art A camera having a data imprinting device for imprinting data such as date and time of photography on a photo film is known. This data imprinting apparatus includes a method of imprinting on a photographic film being fed after completion of exposure of one frame and a method of imprinting on a photographic film at rest in synchronization with the operation of a shutter at the time of photographing. .

In the former method, the front surface (emulsion surface) or the back surface (base surface) of the photographic film is faced, and a plurality of (generally about 7) surface emitting type light emitting diodes (LEDs) are provided. The light from these LEDs is arranged in a line in the direction orthogonal to the feeding direction on the photographic film, and is guided in the form of dots. Then, in synchronization with the feeding of the photo film, the LED is selectively caused to emit light in accordance with the characters at the time of shooting or the selected message, so that the photo film is irradiated with light to expose the dots. Then, one line consisting of a plurality of dots is recorded. Each time the photographic film is fed for a predetermined length, the LED is repeatedly caused to emit light, a plurality of lines are recorded, and the date and the like expressed in a dot matrix form are imprinted on the photographic film.

In the latter method, for example, a back cover of a camera is provided with a liquid crystal module having a liquid crystal display (LCD) for displaying the date, characters and the like and a lamp arranged behind the LCD. Then, in synchronism with the operation of the shutter, the lamp is turned on while displaying the date, characters, etc. to be recorded on the LCD, and the light transmitted through the LCD is exposed on the photographic film through the window opened on the pressure plate of the back cover. It has become.

[0005]

By the way, when the surface emitting type LED is made to emit light to expose the date etc. on the photographic film, the surface emitting type LED has a wide light emitting region in the element because of its structure. The light output from the package that covers the device has a considerable spread. Therefore, it is necessary to irradiate light on the photographic film in the form of minute dots by using a reduction optical system, an optical fiber, or the like. Therefore, a space for arranging a reduction optical system or the like is required, which is unsuitable for a compact camera that needs to be thin and compact.

Further, since the surface-emitting type LED has a limitation in the arrangement interval between the LEDs due to its shape, if one line is represented by many dots, the substrate on which the LED is mounted becomes large, This increases the space for disposing the board, which hinders downsizing of the camera. Therefore, since it is difficult to increase the number of dots that can be exposed in one line without increasing the size of the camera, there is a problem that it is not possible to express fine and complicated marks and characters, for example, characters with a large number of strokes. .

The latter method requires a lamp for illuminating the LCD and is not suitable for downsizing the camera. Further, when recording a large number of characters and the like, the LCD must be enlarged to increase the number of characters that can be displayed at one time, which requires a large arrangement space, which hinders the miniaturization of the camera.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a data imprinting apparatus for a camera, which is advantageous for downsizing the camera and imprints complicated characters. .

[0009]

In order to achieve the above object, in the invention described in claim 1, the photographic film is arranged orthogonally to the feeding direction, and the photographic film is selectively fed every predetermined length. The multiple light-emitting diodes that emit light to project characters and marks onto the photographic film in a dot matrix form are edge-emitting light-emitting diodes that are arranged close to the photographic film. The photo film is irradiated.

According to a second aspect of the present invention, the plurality of light emitting diodes are arranged along the edge of the substrate which is arranged orthogonal to the photographic film surface. In the invention according to claim 3, the plurality of light emitting diodes irradiate the photographic film with light having a substantially rectangular pattern, and the short side of the rectangular pattern coincides with the feeding direction of the photographic film. It is something like. Further, in a fourth aspect of the invention, the plurality of light emitting diodes are arranged with a space between adjacent ones so that the rectangular patterns do not overlap each other on the photographic film.

[0011]

The plurality of light emitting diodes are of the edge emitting type, which has a small light emitting area, and are selectively driven every time a predetermined length of the photo film is fed to express data such as characters and marks in a dot matrix form. Then copy it on the photo film. These light emitting diodes directly irradiate the photographic film with light in a minute rectangular pattern to expose the dots.Therefore, do not use a reduction optical system, but do not use a reduction optical system to capture complicated characters. You can

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 2 showing a camera incorporating a data imprinting device embodying the present invention, a release button 11 and a finder 12 are provided on a camera body 10. When the back cover 13 is opened, the film passage 14 is exposed at the center of the camera body 10. An aperture 15 having a length of 24 mm and a width of 36 mm corresponding to a 35 mm full size is formed in the central portion of the film passage 14. A photographing lens 16 is provided at the back of the aperture 15, and photographing light from the photographing lens 16 is emitted from the aperture 1
Regulated by 5, the shooting screen 17b of the photo film 17
(See FIG. 4) The inside is exposed.

A cartridge chamber 19 for accommodating a cartridge 18 is formed on the left side of the film passage 14, and a film winding chamber 20 for accommodating and accommodating the photographic film 17 is formed on the right side thereof. A drive shaft 19a that engages with one end of the spool 18a of the cartridge 18 and rotates the spool 18a is provided above the cartridge chamber 19. Further, the film winding chamber 20 is provided with a winding shaft 20a for winding the photographic film 17. The drive shaft 19a and the winding shaft 20a are driven by a feeding motor (not shown) built in the camera.

The camera shown in this embodiment is of a prewind type. When the cartridge 18 is loaded in the cartridge chamber 19 and the rear cover 13 is closed, the winding shaft 20a is rotated in the film winding direction to move the cartridge. The photographic film 17 is pulled out from 18, and all the photographic films 17 are once wound around the outer circumference of the winding shaft 20a. Each time the exposure of one frame is completed, the spool 18a is rotated in the film rewinding direction by the drive shaft 19a, and the portion of the photographed film 17 that has been taken is rewound into the cartridge 18.

In the upper part of the film passage 14, the feed amount and the feed speed of the photo film 17 are detected in order to control the one-frame feeding of the photo film 17 and the data imprinting control. A part of the roller 25 is exposed.
The roller 25 comes into contact with the upper end portion of the photographic film 17 and rotates without slipping when the photographic film 17 is fed (winding or rewinding). Instead of the roller 25, a sprocket that engages with the perforations 17a of the photographic film 17 and rotates may be used.

On the inner wall surface of the back cover 13, a photographic film 17 is pressed against the film passage 14 to remove the photographic film 1.
A pressure plate 26 for supporting the plate 7 on a plane is provided. Also,
On the outer wall surface of the back cover 13, a liquid crystal display (LCD) 27 for displaying data such as dates and messages to be imprinted on the photo film 17 and an operation unit 28 are provided (FIG. 5).
reference).

On the wall surface of the camera body 10 between the aperture 15 and the cartridge chamber 19 in the film passage 14,
Various characters such as the shooting date and message are displayed on the photo film 17
LED (light emitting diode) array 30 for imprinting on
Is provided so as to project. This LED array 30 is
The photographic film 1 is provided so as to face the emulsion surface 17c of the photographic film 17, and the photographic film 1 is formed after each frame is photographed.
During the rewinding of 7, the shooting date, various messages, etc. are displayed in the shooting screen 17b.

As shown in FIG. 3, the LED array 30 includes
A plurality of, in this embodiment, seven LEDs 31 to 37 are arranged in a row and held in a holder 38.
˜37 is an edge emitting type in which light is extracted from an end (light emitting region) of the PN junction surface in a direction parallel to the PN junction surface, and the output light thereof is emitted from the light emitting surfaces 31a to 37a to the photographic film 17. It is irradiated toward. Edge emitting LED
The area of the light emitting region is small, and because of its shape, a plurality of LEDs can be arranged extremely close to each other.

An edge-emitting LE having such characteristics
By using D, the LED array 30 for imprinting data is small. Also, the light emitting surface 31a
37a to 37a are arranged very close to each other and immediately before the photographic film 17, so that the output light is directly output from the small LED array 30.
It is possible to irradiate in the form of small dots on the top and to write complicated characters.

The LED array 30 is mounted on the edge of the array substrate 40, and the output light of the LEDs 31 to 37 is emitted from the edge of the array substrate 40 toward the outside of the array substrate 40. . The array substrate 40 is arranged in a direction orthogonal to the emulsion surface 17c of the photographic film 17 (each LED
31 to 37 are arranged in the direction along the optical axis of the output light. A control circuit of the data imprinting device and the like are mounted on the array substrate 40, but they are omitted to avoid complication of the drawing.

As shown in FIG. 1, the LED substrate 40 on which the LED array 30 is mounted is built in the camera body 10 on the front side of the film passage 14, and the LEDs 31 to 3 are provided.
7 are arranged side by side in a direction (width direction) orthogonal to the feeding direction of the photographic film 17 of the photographic film 17. Then, the LED array 30 has each light emitting surface 31.
a to 37a so as to be close to the photo film 17,
It is placed just before the emulsion surface 17c of the photographic film.

In this way, the edge-emitting LED 31
The use of ~ 37 eliminates the need for a reduction optical system, an optical fiber, and the like, and makes the LED array 30 compact, which is advantageous for downsizing the camera. Also, LE
Since the D array 30 is downsized, the array substrate 40 on which the D array 30 is mounted can be made small, and the array substrate 40 can be arranged in a direction orthogonal to the surface of the photographic film 17, so that the width of the camera can be increased. It is possible to prevent the array width of the array substrate 40 from being increased in the direction and prevent the width of the camera from increasing.

In FIG. 4 showing the recording state of the photographic film 17, each of the edge emitting LEDs 31 to 37 irradiates the photographic film with output light in a thin strip-shaped rectangular pattern due to its structure. The LEDs 31 to 37 are arranged in a row so that the long side direction of the cross section of the output light is in the width direction of the photographic film 17 and the short side is in line with the feeding direction (longitudinal direction) of the photographic film 17. It is lined up.

The reason for arranging the short side of the output light in the direction coinciding with the feeding direction of the photographic film 17 will be briefly described. Since the photographic film 17 does not move in the width direction, the length of the dots 45 in the width direction of the photographic film 17 does not change. By the way, if the long side of the output light is made to coincide with the feeding direction, even if the lighting time of the LED is changed, only dots having a shape narrow in the width direction of the photographic film 17 and elongated in the feeding direction can be exposed. However, if the long side of the output light is made to coincide with the feeding direction, the shape of the dot 45 can be easily adjusted, for example, by controlling the lighting time of the LEDs 31 to 37 according to the feeding speed of the photographic film 17. This is because it can be horizontally long.

Each of the LEDs 31 to 37 is a photographic film 17
Light is emitted in the form of a thin band on the upper side, and by feeding the photographic film 17, the output light is emitted into the virtually divided seven irradiation regions 44. A rectangular image (dot) 45 is formed in the irradiation area 44 irradiated with the output light. By driving the LED array 30 once, one line of up to 7 dots is recorded on the photographic film 17, and one character or the like is recorded by, for example, 5 lines. That is, one character is represented as a dot matrix formed of seven dots 45 in the width direction of the photographic film 17 and five dots 45 in the longitudinal direction.

Each of the LEDs 31-37 has a light emitting surface 31a-3.
In consideration of the size of 7a and the spread of output light, the interval between the photographic film 17 and the light emitting surfaces 31a to 37a and the light emitting surface 31.
The arrangement intervals of a to 37a are adjusted so that the irradiation areas 44 adjacent in the width direction of the photographic film 17 do not overlap. By doing so, the imprinted dots 45 do not overlap with each other to prevent density unevenness. In addition, it is preferable that the adjacent irradiation areas 44 are arranged so as to be in contact with each other so that the dots 45 are connected and recorded without overlapping. Further, as described above, by using the edge emitting type LEDs, the light emitting surface 31a ...
The interval of 37a can be easily narrowed.

Further, in the feeding direction, the LEDs 31 to 37 are driven so that the adjacent dots 45 do not overlap each other. Also in this feeding direction, it is preferable that adjacent dots 45 be connected and recorded without overlapping.

FIG. 5 shows an electric circuit of the data imprinting device. The microcomputer 50 controls each part of the camera. An exposure completion signal is input to the microcomputer 50 every time one frame is captured. When the exposure completion signal is input, the microcomputer 50 drives the feeding motor to feed the photographic film 17 by one frame, and controls each part during the frame feeding of the photographic film to imprint data. To do.

The rotary encoder 51 is composed of a photo interrupter 51a and an encoder plate 51b having slits formed in a radial pattern, and a roller 25 is connected to the encoder plate 51b. When the photographic film 17 is fed, the encoder plate 51b rotates together with the roller 25, and an encode pulse signal is generated from the photo interrupter 51a every time the photographic film 17 is fed for a certain length. This encode pulse signal is sent to the microcomputer 50 in order to detect the feeding amount and feeding speed of the photographic film 17.

The microcomputer 50 includes an operation unit 2
8 are connected. This operation unit 28 is set to the date mode in which the date when the image was captured is set, and "Merry" is set.
X'mas ”,“ Happy New Year ”and other message modes, and a mode key to switch the mode in which no characters are displayed, a message selection key to select a message in message mode, the selected mode , A decision key for deciding a message and the like. The photographer operates the operation unit 28 to switch modes, select messages, and determine these.

The character generator 53 is for expanding a character string (data) such as a photographed date and a message to be imprinted into a bit map to generate character data. A calendar circuit that outputs a date code indicating the current date is output to the character generator 53.
A message ROM that stores message codes that represent character strings of various messages such as "Merry X'mas" and "Happy New Year", and "0" to "9", ".",
"Year", "Month", "Day", "A"-"Z", "a"-
A character R that stores a character pattern such as "z"
OM and the like.

In the date mode, the character generator 53 displays the current date, for example, "May 2, 1995".
The date code representing the character string "0 day" is taken out from the calendar circuit, and in the message mode, the message code is taken out from the message ROM. When the enter key is operated, the character generator 53 takes out the character pattern corresponding to each character of the character string represented by the date code or the message code from the character ROM. Then, the extracted character pattern for each character is converted into character data that is developed into a 7-bit vertical direction, for example, a 5-bit bitmap in the horizontal direction, and sends this to the microcomputer 50. The microcomputer 50 serially sends the character data (DATA) from the character generator 53 to the memory 54 in synchronization with the clock signal (CLK).

The character generator 53 also sends the extracted date code or message code to the driver 55. As a result, the current date or message corresponding to the operation of the operation unit 28 is displayed on the LCD 27, and the photographer can know the selected date or message by observing the LCD 27. It should be noted that the LCD 27 is preferably capable of displaying a minimum necessary amount in consideration of downsizing of the camera. For example,
It is preferable that the message or the like to be imprinted is encoded and represented by numbers or symbols.

In the memory 54, the microcomputer 5
Serial character data from 0 is rearranged and written in a bit map form. As shown in FIG. 6 as an example of the character “... CF”, one address in the memory 54 is composed of 7 bits from the 1st bit to the 7th bit, and the 1st bit of each address ( LED31 is included in D1).
Character data corresponding to is written. Similarly, the LED is set to the second bit (D2) to the seventh bit (D7).
Character data corresponding to 32 to 37 is written. The memory 54 is an S from the microcomputer 50.
Each time the rising edge of the KC signal is input, 7-bit character data is sequentially read from the first address for each address and is output in parallel as drive data.

The photographic film 17 is used for the photographing lens 1.
When viewed from the 6 side, the image is exposed with the top and bottom and the left and right reversed, and the LEDs 31 to 37 are arranged from the upper side to the lower side of the camera so as to face the emulsion surface 17c side by side with the LEDs 31, LED 32, ... Memory 54
The character data is written in the left and right sides and the upside down state. In the character data, the bit corresponding to the dot to be imprinted is "1".
In addition, the bit not to be imprinted is "0".

The parallel 7-bit (D1 to D7) drive data output from the memory 54 is the gate array 60.
Sent to The gate array 60 includes seven OR circuits 61.
Is composed of ~ 67. To each of the OR circuits 61 to 67, the SKC signal and the drive data from the microcomputer 50 are input, and when the drive data of "1" is input, the "L level" is input during the input of the SKC signal (H level). Drive pulse is output.

The gate array 60 includes the LED array 30.
The cathodes of the LEDs 31 to 37 are connected. The voltage Vp is applied to the anodes of the LEDs 31 to 37. The LEDs 31 to 37 correspond to the corresponding OR circuit 6
It is driven and emits light while the drive pulse is generated in 1 to 67. That is, the LED corresponding to the bit "1" emits light while the SKC signal is generated.

The SKC signal is generated every time the photographic film 17 is fed for a predetermined length, and its pulse width is changed according to the feeding speed of the photographic film 17, so that the feeding speed is high. The narrower the pulse width is. As a result, dots are recorded on the photo film 17 at regular intervals,
The width of each dot is kept constant.

Next, the operation of the above configuration will be described. Open the back cover 13 of the camera and store in the cartridge storage room 19.
Put the Patrone 18 on the photo film 1
The tip of 7 is hung on the winding shaft 20a. When the back cover 13 is closed, the feeding motor is driven and the winding shaft 20a rotates in the winding direction. As a result, the leading end of the photographic film 17 is engaged with the winding shaft 20a,
Are drawn out from the cartridge 18 and are all wound up on the winding shaft 20a. Whether or not the winding is completed can be determined by monitoring the encode pulse signal from the rotary encoder 51 and determining that the winding is completed when the generation of the encode pulse signal is stopped.

With the completion of winding, the rear end of the photographic film 17 is set behind the aperture 15.
The preparation for shooting the first frame is completed. When data is imprinted, the photographer operates the operation unit 28 provided on the back cover 13 to select the date mode or the message mode. When the message mode is selected, the message selection key of the operation unit 53 is further operated to select the desired message.

For example, if the message mode is selected,
The character generator 53 extracts the message code of the message written at the beginning of the message ROM, sends it to the driver 55, and the LCD 27 displays a message corresponding to the message code. While observing the LCD 27, the photographer operates the message selection key until the desired message is displayed on the LCD 27. Each time the message selection key is operated, message codes are sequentially fetched from the message ROM, sent to the driver 60, and the messages are sequentially displayed on the LCD 27.

The photographer can display the desired message on the LCD.
When it is displayed on 27, the enter key of the operation unit 28 is operated. When the enter key is operated, the character generator 53 extracts from the character ROM a character pattern corresponding to each character of the character string corresponding to the message code extracted immediately before this operation, and 7 dots in the vertical direction for each character. , Is expanded in the left-right direction into a 5-bit bitmap to generate character data of a character string. The obtained character data is sent to the microcomputer 50. The microcomputer 50 serializes this character data and sends it to the memory 54 in synchronization with the click signal. When this serial character data is input, the memory 54 rearranges the character data in a bit map form and writes it.

The photographer presses the release button 30 after deciding the composition with the finder after operating the enter key to take a picture. When the release button 30 is pressed, the shutter is actuated and the photographing light from the photographing lens 16 is exposed on the photographing screen 17b of the photo film 17 set behind the aperture 15. When the operation of the shutter is completed, the exposure completion signal is input to the microcomputer 50.

Upon receipt of this exposure completion signal, the microcomputer 50 drives the feeding motor to start feeding the photographic film 17 by one frame. The drive shaft 19a is rotated by the drive of the feeding motor, and the spool 18a is rotated in the rewinding direction. As a result, the portion of the photographed film 17 that has been taken is rewound into the cartridge 18. When the photo film 17 is fed by this rewinding, the encoder plate 51b rotates together with the roller 25, and every time the photo film 17 is fed for a certain length, an encode pulse signal is generated from the rotary encoder 51, and the microcomputer Fifty
Sent to The microcomputer 50 calculates the feeding length and feeding speed of the photographic film 17 based on the encoded pulse signal, and calculates the SKC signal generation interval and the pulse width.

Then, the microcomputer 50 calculates the length of the photo film from the feeding length of the photo film obtained by calculation.
When it is detected that the area in which data is to be imprinted (hereinafter referred to as a recording area) has reached the position of the LED array 30, an SKC signal having a pulse width calculated based on the encode pulse signal is sent to the memory 54 and the gate array. Send to 60. At the same time that the rising edge of the first SKC signal is input, the memory 54 reads the 7-bit character data written in the first address,
Gate array 60 with bits as driving data in parallel
Send to

As a result, the drive data and the SKC signal are input to the OR circuits 61 to 67 of the gate array 60. Each of the OR circuits 61 to 67 receives these drive data and S
A logical sum with the KC signal is obtained, and a drive pulse for one line is created. Here, when the bit of the drive data is "1", the drive pulse of "L level" is created, and when the bit is "0", the drive pulse is not created.

The drive pulse for one line is sent to the LED array 30, and the LED of the LED array 30 to which the drive pulse is input is driven to emit light. LED that emitted light
The output light from is directly on the emulsion surface 17 of the photographic film 17.
C is irradiated in the form of a thin strip to expose the photographic film 17. By moving the photo film 17 in the feeding direction,
The exposed portion of the output light extends in the feeding direction, and as a result, the irradiation area 44 is exposed. As a result, as shown in FIG. 4, the first line is recorded at the left end of the recording area.

For example, in the character data shown in FIG. 6, since only the 7th bit (D7) is "1", only the LED 37 emits light, and the irradiation corresponding to the LED 37 is made on the first line. The dots 45 are formed only in the region 44.

When the photographic film 17 moves for a predetermined length after the first SKC signal is generated, the second SKC signal having a pulse width corresponding to the feeding speed at this time is generated. The memory 54 reads the 7-bit character data from the second address at the rising edge of the second SKC signal and outputs this to the gate array 60 as the drive data for the second line. In the same procedure as above, 1
A drive pulse for a line is created, and the LEDs 31 to 37 selectively emit light. As a result, the second line is exposed at a position adjacent to the right side of the first line in FIG. 4 so as not to overlap the first line.

Thereafter, similarly, the character data written in the memory 54 is read out for each address, and the third and subsequent lines are recorded in the photographic film 17. In this way, one line in which a maximum of seven dots 45 are recorded is recorded in the photographing screen 17b of the photo film 17, and the character string of the message is imprinted in a dot matrix form. . Since the printed characters are exposed so that the dots 45 are adjacent to each other but do not overlap, there is no density unevenness in the recorded dots 45, and the intervals between the dots 45 are not wide open. , Has become a high-quality product with a clear structure.

When the feeding of the photographic film 17 for one frame is completed, the microcomputer 50 stops the rotation of the feeding motor and stops the feeding of the photographic film 17.
As a result, the portion of the unexposed photographic film 17 is set behind the aperture 15 and the second frame is ready to be photographed.

In the second frame shooting as well, the selected message or date is recorded in the shooting screen 17b in the same manner as above. When the date mode is selected, the date code is extracted from the calendar circuit, character data corresponding to this date is generated by the character generator 53, and this is written in the memory 54. The subsequent operation is the same as in the message mode.

In the above embodiment, seven LEDs 31 to 37 are used.
Although a maximum of 7 dots are recorded on one line by using, the number of LEDs is not limited to this. When the number of dots that can be recorded in one line by miniaturizing the LED array is examined, as shown in FIG.
When the height L1 of the characters recorded on the photographic film 17 is set to 0.7 mm to 1.0 mm in consideration of the enlargement ratio at the time of printing, the LED array 70 has the light emitting surface 7 of each LED 71.
2 size (length in the longitudinal direction) is 10 μm, LED71
The arrangement pitch L2 is 50 μm, and the number of LEDs 71 is 2
It could be 0. Of course, at this time, each L
The output light 73 of the ED 71 is prevented from overlapping on the photographic film 17.

From this result, it can be seen that a large number of dots can be exposed on one line and a high-quality character can be recorded without increasing the size of the LED array. It can be seen that character fonts can be used and complex marks and characters, such as characters with a large number of strokes, can be recorded.

In the above-mentioned embodiment, the camera in which the photographic film is fed from right to left with the aperture interposed between each photographing is explained, but a camera of the type fed from left to right may be used. . In this case, the LED array may be arranged on the right side of the aperture. Further, in the above-described embodiment, the pre-wind type camera is described, but the camera may be such that an unexposed photographic film portion is pulled out from the cartridge each time one frame is photographed.

Further, in the above embodiment, the character data is generated by the character generator, but the character data of the character that can be recorded is written in the memory and the code of the character to be recorded is sent from the microcomputer or the like. Then, the character data may be read and output in response to this.

Further, in the case of a camera which is not limited to miniaturization and thinning, the LED array can be arranged on the back cover side, for example, the pressure plate. Also, the present invention
It can also be applied to a case where the exposure location of data such as a shooting date and a message is outside the shooting screen.

[0058]

As described above, according to the present invention, a plurality of edge emitting type light emitting diodes are used, and the light emitting surfaces of these light emitting diodes are arranged in the direction orthogonal to the feeding direction of the photographic film. In addition, since a plurality of light emitting diodes are arranged so as to face each other immediately before the photographic film, and the light from the light emitting diodes is directly applied to the photographic film, the LED array is miniaturized, and Since a reduction optical system and the like are not necessary, complicated characters and marks can be imprinted on a photographic film without hindering downsizing of the camera.

Further, by arranging a plurality of light emitting diodes side by side on the edge of the substrate, the substrate can be built in the camera body along the optical axis direction of the light emitting diodes. You can save space.

Further, a light emitting diode adapted to irradiate light of a substantially rectangular pattern is recorded on the photographic film by setting the short side of the rectangular pattern to coincide with the feeding direction of the photographic film. It is possible to easily control the size and shape of the dots to be printed. Since the light emitted to the photographic film does not overlap on the photographic film and the light emitting diodes are arranged so as to have a space between adjacent light emitting diodes, density unevenness does not occur in the recorded dots. Imprinting is possible.

[Brief description of the drawings]

FIG. 1 is a sectional view of a camera showing an arrangement of a photographic film, an LED array, and an array substrate.

FIG. 2 is a perspective view showing a camera embodying the present invention.

FIG. 3 is a perspective view showing an LED array and an array substrate.

FIG. 4 is an explanatory diagram showing a dot recording state of a photographic film.

FIG. 5 is a circuit diagram showing an electric circuit of the data imprinting device.

FIG. 6 is an explanatory diagram showing a state of a memory in which character data is written.

FIG. 7 is an explanatory diagram showing dimensions of a miniaturized LED array.

[Explanation of symbols]

 15 Aperture 14 Film Passage 17 Photo Film 30 LED Array 31-37 Light-Emitting Diodes 31a-37a Light-Emitting Surface 40 Array Substrate 44 Irradiation Area 45 Dots 50 Microcomputer 51 Rotary Encoder 53 Character Generator 54 Memory

Claims (4)

[Claims] 1. A plurality of light emitting diodes are arranged orthogonally to the feeding direction of the photographic film, and each time the photographic film is fed for a predetermined length, the light emitting diodes are selectively lit to write characters or marks on the photographic film. In the data imprinting device of a camera for imprinting in a dot matrix form, the plurality of light emitting diodes are end face light emitting type light emitting diodes arranged close to the photo film, and light from these light emitting diodes is directly applied to the photo film. A data imprinting device for a camera, which is characterized by being irradiated. 2. The data imprinting device of a camera according to claim 1, wherein the plurality of light emitting diodes are arranged along an edge of a substrate arranged orthogonal to a photographic film surface. 3. The light emitting diodes emit light having a substantially rectangular pattern toward the photographic film, and the short sides of the rectangular pattern are aligned with the feeding direction of the photographic film. The data imprinting device of the camera according to claim 2. 4. The plurality of light emitting diodes are arranged with a space between adjacent ones so that the rectangular patterns do not overlap each other on a photographic film. Data imprinting device for camera.