JPS63139328A - Data imprinting device for camera capable of switching photographic picture size - Google Patents

Abstract

PURPOSE:To imprint a data character to an appropriate position with respect to a set photographic picture, by providing plural imprinting optical system, and selecting electrically the imprinting optical system, based on photographic picture size information. CONSTITUTION:When a standard size picture is selected, a high signal is inputted to an F/H signal terminal 5c of an imprinting IC5 from a camera body size circuit 10. On the other hand, when a photographer executes photographing, an imprinting trigger signal is inputted as a high signal to a terminal 5b. As a result, an output of an AND circuit 7 goes to a high signal, a transistor TR1 is turned on, an incadescent lamp 1 emits a light beam and its light beam passes through a mask part 2b of a transmission type liquid crystal display body 2, and a data is imprinted into a film. On the contrary, when half size photographing is selected, a transistor TR2 is turned on, and by a light beam which has passed through a mask part 2c of the display body 2 by a light emission of an incadescent lamp 11, the data is imprinted into a half size picture of the film.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a camera data imprinting device, particularly a camera data imprinting device that can switch the screen size between a standard full size (36a x 24101) and a half size (1811 x 24is). The present invention relates to an imprinting device.

<Conventional technology> Traditionally, half-frame cameras had considerably poor image quality;
With the exception of a temporary boom, there was no demand for cameras, and most people bought full-frame 35m1 cameras, which had superior image quality. However, in recent years, the performance of film has improved significantly, and even when shot with a half-frame camera, the service print version is now as good as that shot with a full-frame camera, and the number of shots is twice as high. Half-frame cameras are once again in the spotlight due to their economical nature. However, when enlarging a commemorative photo or the like, it is clear that the image quality is inferior when using half-size.

Therefore, it has become desirable to have a camera that can switch between full-frame and half-size images each time the film is replaced.

Data imprinting, which imprints data such as date on film, is also popular, and the arrival of a camera that combines these two functions has been eagerly awaited.

<Problems to be Solved by the Invention> By the way, there is a big problem in incorporating the above-mentioned two functions together into a camera.

It is the size of the characters that are imprinted on the film.

That is, the half size (1sm x 24m) is half the size of the full size (35n x 24th edition). Therefore, when imprinted using the same device, the size of the imprinted characters is naturally the same, so the area occupied by the characters in the negative size is twice that of the full size. For example, if you compare the two when printing at service size, as shown in Figure 8, the imprinted characters are the appropriate size when printing from full size, but when printing from half size, as shown in Figure 9, The problem with printing from a size (within the range shown by the two-dot chain line in FIG. 8) is that the imprinted characters are abnormally large and stand out, ruining the memorable photograph.

Another problem is the position of imprinted characters. In other words, if you try to imprint using the same device, in the case of a full-size image, the imprinted characters will inevitably be placed towards the center as shown in Figure 8, and the imprinted characters will be too noticeable and bothersome. must be printed at an appropriate and easy-to-read size towards the corner of the screen.

In view of the problems of the prior art described above, the present invention provides a data imprinting device for a camera that can switch the photographing screen and can imprint data such as date at an appropriate position for both standard size and half size photography. The purpose is to

Means for Solving the Problems> The structure of the present invention for achieving the above-mentioned object will be explained using FIGS. 1 and 2, which correspond to embodiments.

The present invention uses a data imprinting optical system consisting of a liquid crystal display attached to a camera and an incandescent lamp, which can switch the photographing screen size of the film 3 between standard size and half size. In the data imprinting device for imprinting on the film 3, the imprinting optical system has a plurality of systems depending on the size of the photographic screen, namely, a mask portion 2b for forming characters on the liquid crystal display 2, an incandescent lamp 1, and a character forming portion for forming 20 characters on the liquid crystal display. The mask part has a 20% incandescent lamp 11, and is provided with an imprint operation circuit 5 that selects the imprint optical system based on the photographic screen size information from the camera body side circuit 10.

<Function> When the photographer loads film into the camera, the set shooting screen size information signal is sent to the camera body depending on whether the shooting screen size is to be shot at, for example, standard size or half size. An input signal is input from the side circuit 10 to the imprint operation circuit 5, and the operation of the imprint operation circuit 5 causes the incandescent lamp 1 to emit light for standard size photography to transfer the data characters on the mask portion 2b of the liquid crystal display 2 onto the film 3. During imprinting and half-size photography, the incandescent lamp 11 emits light to transfer the data characters on the mask section 2C of the liquid crystal display 2 to the film 3.
This allows the image to be imprinted at an appropriate position relative to the set shooting screen.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 6.

Reference numeral 1.11 indicates an incandescent lamp for imprinting, which is used for a standard size screen and a half size screen, respectively, and their respective optical paths are blocked by a wall not shown. Reference numeral 2 denotes a transmissive liquid crystal display body, in which a liquid crystal 2a is sealed and chromium is deposited on mask parts 2b and 2c to form character parts, respectively.
are arranged in a line, and the mask parts 2b and 2c are used for data imprinting when photographing a standard size screen, and...-
It is designed for imprinting data when shooting a full-size screen.

Therefore, the incandescent lamp 1 and the mask portion 2b of the liquid crystal display 2 are for a standard size screen.
The mask portion 2c forms a data imprinting optical system for the .--size screen.

Further, as shown in FIG. 3, the vertical and horizontal lengths W of the mask portion 2c are approximately 0.7 times the vertical and horizontal lengths W of the mask portion 2b, and its area JXW is approximately 1 of L×W. /2. 3 is a film on which data is imprinted.

FIG. 2 shows a block diagram of the operating circuit of the data imprinting device of this embodiment.

Reference numeral 5 denotes an imprinting IC that serves as an imprinting operation circuit, which includes a terminal 5a that outputs information on the transmissive liquid crystal display 2 and external monitor liquid crystal display 12, and an imprinting trigger signal () from the camera body side 10.・Terminal 5 for inputting signal (possible signal)
b, F/) (Signal (when standard size shooting), Signal available, No. -
Terminal 5c for inputting low signal (during 7 size shooting);
It has a GND terminal 5d that keeps GND at the same potential, and the terminal 5. b, 5c, and 5d are camera body side circuits 1, respectively.
- Connected to the TRI terminal, P/H terminal, and GND terminal of 0 via switches Sw5a, 3w6, and 8w7. However, the switches Sw5, 3w6 and Sw7
is not necessary when the camera body side circuit 10 and the imprinting IC 5 are connected by a flexible printed board or the like.

The output end of the terminal 5b is connected to one input end of the AND circuit 7.9, and the output end of the terminal 5c is connected to the other input end of the AND circuit 7 via the inverter circuit 8. are respectively connected to the other input terminals of the .

Further, a crystal oscillator 6 and switches Swl to Sw4 are connected to the imprinting IC 5, respectively, and the switches Swl are, for example, 1 year, month, day, 1 day, hour, minute.

Switches for changing display modes such as ro F FJ, switches Sw2 to Sw4 are 1 year, 1 month, 1 year, 1 month, etc.
This is a correction switch for ``1 day'' or 1 day'', 1 o'clock'', and 1 minute'', and correction is performed when the potential is the same as GND. Furthermore, the imprinting IC 5 is connected to a TRI output terminal 5e connected to the output terminal of the AND circuit 7 which supplies a base current to the drive transistor Tri of the incandescent lamp 1 when the camera takes a standard size photograph, and a TRI output terminal 5e connected to the output terminal of the AND circuit 7 which supplies a base current to the driving transistor Tri of the incandescent lamp 1 when the camera takes a standard size photograph. It has a TRI output terminal 5f connected to the output terminal of the AND circuit 9 for passing a base current to the eleven driving transistors Tr2, and a terminal 5g for inputting the voltage of the power supply battery 13.

In this embodiment with the above configuration, when the photographer loads film into the camera, he or she selects whether to shoot on a standard size screen or on a half size screen.

Here, first, when a standard size screen is selected, a switch (not shown) on the camera body side is turned on, and a high signal is input from the camera body side circuit 10 to the F/H signal terminal 5c of the imprinting IC 5.

On the other hand, when the photographer takes a picture, an imprinting trigger signal is sent from the camera body side circuit 10 to the terminal 5 of the imprinting IC 5.
b...is input as a signal possible.

As a result, the N/A signal is input to the two input terminals of the AND circuit 7 in the imprinting IC 5, so the output thereof also becomes the N/A signal, and the transistor Tri is turned on from the TRI output terminal 5e. , a current flows through the incandescent lamp 1 to emit light, and the light passes through the mask portion 2b of the transmissive liquid crystal display 2, thereby imprinting data onto a film as shown in FIG.

On the other hand, the high signal input to the inverter circuit 8 becomes a low signal and is input to one end of the AND circuit 9, but the other end is input to the terminal 5b, and the output is The signal becomes a low signal, and no current flows from the TRI output terminal 5f. Therefore, the transistor Tr2 remains off, and no current flows to the incandescent lamp 11, so no light is emitted. It will not be imprinted on 3.

On the other hand, when a low signal is input to terminal 5c, that is, when half-size shooting is selected, the above procedure is completely reversed.
The transistor Tr2 is turned on, and the light that passes through the mask portion 2c of the transmissive liquid crystal display 2 due to the light emitted from the incandescent lamp 11 causes the data to be converted to a half-size area between the two-dot chain lines of the film 3, as shown in FIG. Although it is imprinted on the screen, since the transistor Tri remains off and the incandescent lamp 1 does not emit light, the data of the mask portion 2b is not imprinted. In this way, the imprinting optical system is selected based on the screen size information.

When the .--size screen shown in FIG. 5 is enlarged to the standard size, the size of the data characters becomes almost the same as the size of the data characters shown in FIG. 4, as shown in FIG.

FIG. 7 shows another embodiment in which the present invention is incorporated into the back cover of a camera, and in order to simplify the explanation, parts having the same functions as those in the previous embodiment are given the same reference numerals. do.

In this embodiment, an incandescent lamp 1 is installed along the back cover (not shown).
. It is designed to imprint data characters. The other configurations are completely the same as those of the previous embodiment.

In addition, in each of the above-mentioned embodiments, the mask portion 2b of the liquid crystal display 2
, 2c are formed on the same liquid crystal display,
It goes without saying that each liquid crystal display may be formed using different liquid crystal display bodies.

<Effects of the Invention> As explained above, the present invention has a plurality of imprinting optical systems each consisting of an incandescent lamp and a liquid crystal display, and the imprinting optical system is electrically selected based on image capturing screen size information. Since the data characters are imprinted, there is an effect that the data characters can be imprinted at an appropriate position on a photographic screen that is easily set.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a schematic configuration diagram of a data imprinting device for a camera according to an embodiment of the present invention, FIG. 2 is a block diagram of the operating circuit of the data imprinting device, and FIG. A plan view of a transmissive liquid crystal display, Fig. 4 is a diagram of data imprinting on a standard size screen, Fig. 5 is a diagram of data imprinting on a half size screen, and Fig. 6 is an enlargement of the standard size screen on a half size screen. 7 is a schematic configuration diagram of another embodiment of the present invention, FIG. 8 is a diagram of data imprinting on a standard size screen by a conventional data imprinting device, and FIG. 9 is a diagram of a half size screen as standard. FIG. 3 is an enlarged state diagram corresponding to the screen size. 1.11 Incandescent lamp, 2 Transmissive liquid crystal display, 2b Mark size screen mask section, 2c Half size screen mask section, 5 Imprint IC (
Imprint operation circuit), 10...Camera body side circuit No. 4
Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] 1 The data characters on the liquid crystal display are transferred onto the film by a data imprint optical system consisting of a liquid crystal display and an incandescent lamp attached to the camera, which can switch the film shooting screen size between standard size and half size. The data imprinting device includes a plurality of imprinting optical systems according to the size of the photographic screen, and includes an imprinting operation circuit that selects the imprinting optical system based on the photographic screen size information from the circuit on the camera body side. A data imprinting device for a camera that is capable of changing the shooting screen size.