JPS58127918A - Camera with data imprinter - Google Patents

Abstract

PURPOSE:To improve ease of operation and appearance by providing a min. of elements required for imprinting of the data corresponding to the output of a clock circuit from the rear surface of the film to the rear cover of a camera. CONSTITUTION:A data setter 21, a data display 23, arithmetic and clock circuits 25, and a source battery E are provided to a camera body C, and an imprinting means 27 is provided to a rear cover B of the camera. While the cover B is held open, the means 27 and a connecting part 29 for transmitting the signal from the body C are mounted to a film pressing plate P provided to the rear cover B, and a contact group 19 for connection is provided to the body C side.

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a data imprinting device for a camera.
It relates to a device that imprints data from the back side of a strip film such as a 3ff% roll film.

BACKGROUND TECHNOLOGY Conventionally, in a device for imprinting data from the back side of a film, all the components necessary for data photography have been usually arranged on the back of the camera.

Some data imprinting devices equipped with an electronic clock are installed on the back cover of the camera, but such devices include an electronic clock circuit, an electronic clock display device, frost, a slave clock setting device, and a data imprinting device that is installed on the back cover of the camera. The electronic clock drive, light emitting battery, etc. all collide not only with the back of the camera but also with the face, especially the nose, of the photographer who is holding the camera when taking a picture, making it difficult to operate the camera. Ta.

OBJECTS The overall object of the present invention is to provide a data imprinting device that improves the above-mentioned drawbacks and does not impair the operability, appearance, design, etc. of the camera.

Summary of the present invention The components of a data imprinting device are arranged in a distributed manner, and the camera body includes at least an electronic clock circuit, a display device, an electronic clock setting device, and a power battery. is provided with at least an imprinting means.

Embodiment FIG. 1 shows a conventional data photographing device, in which a back cover 03) equipped with a data imprinting device a is attached to the camera body. The data imprinting device ■ is equipped with a data setting device C11), a data display device α3 for displaying the set data contents, a clock circuit αG, lighting and other means αη for imprinting, and a power source battery ■. Because of this, the data imprint device (■) itself protruded from the camera back.

FIG. 2 shows an embodiment of the present invention, in which the camera body (C)
There is a data setting device I211. A data display device, an arithmetic/clock circuit (c), and a power supply battery (2) are provided.

The camera back cover (B) is provided with at least an imprinting means (271).

FIG. 3 shows a state in which the back cover (B) is opened in the above-mentioned embodiment of the present application. A connection part (29) for transmitting signals from the main body (0) is attached.On the camera body side, there is a group of contacts (29) for connection.
A duck is provided.

Figure 4 is a block diagram showing an embodiment of the circuit section of the present invention.
(ill indicates the back cover side. Data setting device el
jll consists of a group of setting keys (21a) to (21e), (21a) is a clock setting key, (21b) q is a date setting key for setting the date, and (21c) is for setting the shutter speed controlled by the camera. The TV value setting key (21d) is for manual setting, and the AV value setting key (21e) is also used for manually setting the aperture value controlled by the camera.
1. This is the SV value setting key for manually setting the sensitivity of the film used. The data set by the data setting device QIHC is transferred to the calculation/clock circuit & 5 via the setting switching circuit (31+').
). Arithmetic/clock circuit The arithmetic circuit that performs exposure calculations (25aχ is a clock/clock that measures the year/month/day, hour, minute, and second, and outputs a signal indicating these values).
It consists of a date circuit (25b) and a timer circuit (25c) that controls the lighting time of the data imprinting light source, and an arithmetic circuit (25a) that controls the shutter speed and aperture using the TV setting key, AV setting key, Sv setting key, etc. Data such as value, film sensitivity, etc. are input and the photometry circuit (33)
photometric data is input.

The timer circuit (25c) has an Sv setting key (21e) V so that the lighting time of the light source changes according to the film sensitivity.
The configuration is such that the data input by C is input. Of course, the arithmetic and clock circuits can be configured independently according to individual functions such as the above-mentioned exposure, timekeeping, time limit, etc.

It is configured to be applied to the output exposure control section θ of the arithmetic circuit (25a) and the decoder (37a), and the exposure control section (j35)K controls an exposure control mechanism (not shown) as is known in the art. The output of the clock/date circuit (25b) is also input to the decoder (37a)K. The output of the decoder (37a) is applied to the driver (37b), and the output of the driver (37b) is applied to the camera body (
The voltage is applied to the display device (c) provided at ◯ and the liquid crystal imprint display section (39) provided at the back cover m>vc. The display switching unit (37c) selects, for example, the display content of the display device. However, the display device□□□
When the arithmetic/clock circuit (2I51) is configured to display all data or to automatically switch the display in a time-divided manner, the display switching section (37c) becomes unnecessary.The imprinting signal circuit ( 41) usually utilizes a signal extracted in connection with the control operation of the shutter,
The output signal is configured to be applied to a timer circuit (25c) that determines the data imprinting time.

The back cover has an imprinted display (39) and two imprinted light sources (
27p is provided, and the imprint display (39) is made of liquid crystal, and a translucent pattern corresponding to the imprint data is formed. The imprint light source (27L) is composed of a micro lamp and is arranged so that the above imprint display (391K) is illuminated and the film surface is exposed with the light that passes through the transparent pattern. A contact group Q'J and a connecting portion 129) are provided between the lid (B) and one of the connecting portions can be made of conductive rubber, for example.

FIG. 5 shows an embodiment in which a part of the block circuit diagram shown in FIG. The steps from to display switching (37c) are the same as in the embodiment shown in FIG. 4 above.

A driver (37d) and an imprint light source (27D) are arranged in a known cross section on the back cover (B). The driver (37d) is necessary because the method of ground movement of the projection light source (27D) is different from that of the liquid crystal of the display device O. The same driver (37d) fl can be installed on the camera camera body side (OK, of course it is also possible to install it, but this driver (37d) is required only to drive the imprint light source (27D), so it is installed on the back cover (B) side. It is preferable to keep it.

Next, the present invention will be explained in detail. Operate the setting keys (21c) to (21e)i on the data setting device aD to set the data necessary for exposure control (TV), (AV) and (SV).
Enter using the setting keys. These input data are stored in the setting switch section f.
311', and a signal of the calculation result is output to the exposure control circuit (35). Exposure control is performed via known control mechanisms. When starting to use the camera or replacing the battery f, the setting keys of the data setting device CrJ (2fa) (21b)
The camera body (O's clock/data circuit (25b)
After data such as time 1 and date are set in , the clock/date circuit (25b) automatically measures time 9, date, etc. by the clock/automatic calendar function. Clock/data circuit (2
The signal indicating data such as the time and date set in 5b) is output to the decoder (37a) and converted into a display segment signal that drives the liquid crystal of the display device (c) and the imprint display (39). Furthermore, the liquid crystal of the display device and the imprint display (39) are driven via a driver (37b). The display switching unit (37c) can be provided as necessary, for example, to divide the display contents of the camera body (0) display device (c) into exposure-related and date-related, and even in date-related settings, to change the display contents to the time or date. Imprint display using a transmissive liquid crystal in the pattern area (39
) receives the same drive signal as that of the display device, which is also made of liquid crystal, and forms the character pattern necessary for imprinting. Therefore, the driver (37b) is the only one suitable for driving the two liquid crystals, and the imprint light source (27L) receives the imprint signal +4np and is turned on when the timer circuit (25c) is activated.

The lighting time changes depending on the film sensitivity and the W value, which is preset with the key (21e) in accordance with the film sensitivity. This lighting light reaches the film through the light m previously formed by the character pattern, and data is imprinted on the film. Signals are transmitted from the camera body (C) to the back cover [F]) from the contact group θ9 on the 0 side to the pressure on the back cover (B) side (connection point 9 provided on the plate (P)). It will be done. At this time, for example, if the connecting part (29) is made of conductive rubber, the contact part will be less likely to be damaged. In addition, if this connection part (2 (G)) is provided on the crimp plate, the back cover itself will not be any different from the conventional part, and only the crimp plate P will need to be changed, which is convenient. ) As shown in the figure, if you place the crimp plate (2) at either the upper or lower end, or on the left or right, in the center, you can use the four corners of the crimp plate ( ) as the contact surface of the crimp plate, so that the flat surface of the film is There is no problem with sex either.

In the second embodiment shown in FIG. 5, the imprinting means is a light emitting diode of the segment as described above, and since the driving type is different from that of the liquid crystal, a driver circuit (37d) for the light emitting diode is separately provided. . The output of the decoder (37a) is on the one hand the driver (
37b), and to a driver (37d) for the light emitting diode (27D), and are converted into drive signals that match the display and drive mode of the light emitting diode (27D). The display device 23 may switch display (
37c) Information is displayed while appropriately switching the display via k. The imprint light source (27D) emits the imprint signal (4
11t - The control signal received from the timer circuit (25c) causes the driver (37d) to emit light through the driver (37d)'e. Imprinting on the film is performed by this light emission, and the light emission time is controlled by the signal output time of the timer circuit (25c). Film sensitivity setting key (2Le)
The time setting of the timer 7 circuit is performed by the setting of , which is the same as in the above-mentioned other embodiment.

If the driver (37d) is installed on the back cover 03) as in the example, a combination of only the light emitting means necessary for data imprinting will be obtained, so the back cover with data imprinting device can be replaced and removed with a normal back cover. For such a camera, the back cover will be the most suitable for the customer's needs. Same driver (37d)'t
It goes without saying that it can also be provided on the camera body.

Effects As described above, the camera back cover according to the present invention has a minimum number of parts such as a light emitting means, and most other elements are provided in the camera, so it is easy to use without being imprinted with data. In addition, the display device is provided on the camera side,
Since it can be used for data other than imprinting, such as exposure display, the circuit configuration is simplified, and since power can be distributed to an easily visible location such as the top of the camera, data can be easily set and read.

4.4th floor - 1st floor Fig. 1 (a), et al.) are top and rear views of a conventional camera with data imprinting device, and Fig. 2 (a), (b) are a camera using the present invention. Top view and rear view showing an example of
The figure is a rear view of the camera shown in Figure 2 with the back cover opened.
FIG. 4 is a block diagram showing an example of the circuit configuration according to the present invention, and FIG. 5 is a block diagram showing another example of the circuit configuration.

C: Camera body, B: Back cover, 27: Data imprinting means 29: Electrical connection part, 21: i-event setting device, 25:
Arithmetic/clock circuit, 23: Data display device, E: Power supply battery.

Claims (1)

[Claims] 1. The camera body is provided with at least a clock circuit, an imprint data display device, a setting device for the clock circuit, and a power source, and the camera back cover is provided with data corresponding to the output of the clock circuit on the back side of the entire film. A camera with a data imprinting device that has the minimum amount of data necessary for imprinting. 2. Claim 1, wherein the camera back cover [is provided with data imprinting means consisting of a transmissive LCD and illumination means]
Camera with data imprinting device as described in section. 3. The data photographing device according to claim 1, wherein the camera back cover is provided with data imprinting means consisting of a segment constituted by a light emitting diode. 4. The data imprinting means is provided on the pressure plate portion of the camera back cover. A camera with a data imprinting device according to claim 2 or 3. 5. The photo-recording data display device and the setting device are shared with the exposure display/setting device of the camera, and the setting device is provided with a selection device for selecting which setting to perform. A camera with a data imprinting device as described in Scope 1.