JPS6333735A - Camera with data imprinting device - Google Patents

Abstract

PURPOSE:To surely imprint data up to the last photographed frame of a film by operating a data imprinting part to imprint data at the position where one frame of the film is rewound from a photographic picture frame after being photographed. CONSTITUTION:When a film 2 is rewound into a cartridge 3 to terminate rewinding of one frame after this frame of the film 2 is photographed, an illuminating lamp 4 and a data display part 5 are driven by a one-frame rewinding end signal to imprint data, for example, the date on the data display part 5 as data character 9 on the upper left part of an exposed photographed picture 2b through an image forming lens 6. Since data is imprinted after the exposed picture 2b is moved by rewinding, data is surely imprinted on all exposed pictures.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a camera that imprints data such as the date from the front of the film, particularly when the film is wound up after shooting and reaches outside the shooting screen. The present invention relates to a camera having such an imprinting device.

<Prior art> Various proposals have been made regarding data imprinting from the film emulsion side, but among them, a data imprinting section is provided between the camera's photographing screen frame and the spool chamber, and one-frame photographing is performed. A method has been proposed in which a winding completion signal or the like is used to imprint on the film each time the winding is completed.

That is, when the film moves outside the frame of the photographic screen, it is imprinted outside the frame of the photographic screen.
There is one shown in Publication No. 8734 and the like.

<Problems to be Solved by the Invention> Since this method places the data imprinting part outside the frame of the photographing screen, there is no need for a complicated mechanism to move the data imprinting part into and out of the photographic screen in conjunction with photographing. Although it has the advantage of being easily applicable to focal plane shutter cameras, it also has the following drawbacks. In other words, since the data imprinting operation was started by the film winding completion signal, if the film was wound after the last frame was taken, the first frame of the film would be
Imprinting is not possible because the film is not wound up by the number of frames and the film stops midway, or the film is pulled back automatically due to a tension phenomenon, and the winding completion signal is not issued. There was a drawback that the film had to be rewound for a moment.

In addition, since the data imprinting section for horizontal shooting of the camera is usually horizontally long, if it is placed between the shooting screen frame and the spool chamber, the distance between the shooting optical axis and the spool axis will increase, and the camera will It was unsuitable for compactness.

SUMMARY OF THE INVENTION An object of the present invention is to provide a camera having a data imprinting device that can eliminate the drawbacks of the conventional example described above, ensure data imprinting up to the last photographed frame of the film, and reduce the size of the camera. shall be.

<Means for Solving the Problems> The configuration of the present invention for achieving the above-mentioned object will be explained using FIG. 1 corresponding to an embodiment.

In the present invention, the data imprinting section 7 is disposed between the photographing screen frame 8 in the camera and the storage chamber of the film 3, and
is configured so that the entire image is wound onto a spool (not shown) in advance and then rewound one frame at a time into the cartridge 3 each time a photograph is taken.
The film 2 is rewound every time one frame is photographed and the data imprinting section 7 is operated at a position moved from the photographing screen frame 8 to imprint data on the film 2.

Function> The film 2 loaded in the camera is completely wound up on a spool (not shown) in advance, and the film 2 is wound onto a cartridge 3 every time one frame is photographed.
Since the film feeding mechanism is such that the film is rewound one frame at a time, when one frame of the film 2 is rewound into the cartridge 3 after one frame of the film 2 has been photographed, the 1 frame rewinding end signal is activated. The illumination lamp 4 and data display 5 forming the data imprinting section 7 are driven, and the data on the data display 5 is imprinted as data characters 9 on the upper left side of the exposed photographic screen 2b through the imaging lens 6. It will be done.

At the time of L, the film 2 is rewound one frame at a time to the cartridge 3 and photographed, and after the exposed photographic screen 2b is rewound and moved, data is imprinted at the moved position, so all exposed photographs are taken. Data can be imprinted on the screen reliably.

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

1 is a photographing lens having a photographing optical axis O1; 2 is a film;
3 is a cartridge having a cartridge shaft 3a. The film 2 is wound onto a spool (not shown) in advance when the cartridge 3 is loaded, and an automatic feeding mechanism is configured so that the film 2 is rewound one frame at a time into the cartridge 3 each time one frame is photographed. 2b shows an unexposed photographic screen, and 2b shows a previously exposed photographic screen.

Further, 4 is an illumination lamp, 5 is a data display consisting of, for example, an LCD, and 6 is an imaging lens having a projection optical axis 02-+, which constitutes a data projection section 7. 7 is arranged in front of the film 2 between the storage chamber of the camera 3 and the photographic screen frame 8,
Data characters 9 are written on the exposed photographic screen 2b of the film 2.
It is designed to imprint.

In this embodiment with the above configuration, after one frame of the film 2 has been photographed, the film 2 is rewound into the cartridge 3.
When the one-frame rewinding shown in FIG. 1 is completed, the illumination lamp 4 and data display unit 5 are driven by the one-frame rewinding completion signal, and the data on the data display 5, for example, the date, is displayed on the image. The data characters 9 are imprinted on the upper left side of the exposed photographic screen 2b through the lens 6.

Here, in FIG. 1, the distance between the photographing optical axis O4 and the horizontal edge of the photographing screen is A1, and the distance between the unexposed photographing screen 2a and the exposed photographing screen 2b, that is, the screen interval is B1 the exposed photographing screen 2b. The distance between the horizontal edge of the data character 9 and the edge of the data character 9 is C1. The distance between the edge of the data character 9 and the imprinting optical axis 02. Let F be the distance between the side edge and the cartridge shaft 3a.

Data character B is distance C from the edge of exposed photographic screen 2b
The reason for the distance is that the printing takes into account all the variations in printing, and if it is placed close to the edge, the printing may sometimes result in characters being cut off.

Therefore, in this embodiment, the data character 9 is the photographing optical axis 01.
The data is imprinted at a position that is at least A+B+C away from the camera, and in order to do this, it is necessary to arrange the data imprinting section 7 at a corresponding position, that is, at a position that is A+B+C+D away from the photographing optical axis O1 and the cartridge axis 3a. The interval G is G=A+B+C+E+F, and this B+C
This increases the length of the camera, which increases the camera size.

FIG. 2 shows another embodiment of the present invention. In order to simplify the explanation, the same parts as in the embodiment of FIG. 1 are given the same reference numerals, and all the differences will be explained.

The difference from the embodiment shown in FIG. 1 is that the data imprinting section 7 is moved to the shooting screen frame B so that the data character 9 is printed at a position that is closer to the left side (toward the shooting screen frame 8 side) by B+C in FIG. It is placed close to the center.

With this configuration, the distance G between the photographing optical axis O1 and the cartridge shaft 3a is G=A+E+F, and the camera size can be reduced by the length B+C compared to the embodiment shown in FIG. Here, FIG. 3 is for explaining the timing of data imprinting in the embodiment of FIG. 2.

That is, the imprinting operation is performed when the rewinding operation is temporarily interrupted and stopped at a predetermined position while the exposed photographic screen 2b is rewound by one frame, and after imprinting is completed, the rewinding operation is started again. After one frame has been rewound, the film stops running and is set to a release ready state for the next frame.

In addition, FIG. 3 shows a case in which imprinting is performed when the film 2 is rewound almost to the full length, and the left edge of the data character 9 coincides with the edge of the shooting screen frame 8. It goes without saying that the distance traveled until the vehicle stops traveling may be set arbitrarily.

FIG. 4 shows yet another embodiment of the present invention, which is of a type in which the film is temporarily stopped in the middle of rewinding, similar to the embodiment shown in FIG. The data imprinting section 7 is arranged so that the image is imprinted at the desired position, but in this case, the illumination lamp 4, the data display 5, and the imaging lens 6 are arranged outside the effective optical path of the photographing lens 1. ing. However, 10 is a spool.

In Fig. 4, a part of the data character width E imprinted within the shooting effective range overlaps by H, and while rewinding the film 2 by one frame, the rewinding movement is stopped once, and at that time, the The data characters are imprinted by lighting the lamp 4.

With such a configuration, it is possible to make the camera even more compact.

Next, FIG. 5 is a simplified block circuit diagram for operating the data imprinting apparatus of the embodiment shown in FIGS. 2 to 4.

In the figure, a release signal 31 from a release circuit 20
When is output, the exposure control circuit 22 activates the shutter (
(not shown) opens and closes to perform an exposure operation, and an exposure completion signal 30 is applied to the feeding circuit 24 to start a film rewinding operation. On the other hand, when the film is running, a film movement amount detection circuit 21 constituted by a pulse encoder etc. (both not shown) interlocked with a sprocket etc.
The amount of film movement is detected by , and a pulse 29 corresponding to the amount of film movement is applied to the next stage counter 23.
When the counter 23 reaches the predetermined 1st shift, the feeding circuit 24
A film rewind stop upper signal 27 is applied to stop the film feeding, and a data imprint trigger signal 26 is applied to the data imprint control circuit 25. When data imprinting is completed, a data imprinting completion signal 28 is sent to the feeding circuit 24.
The film is rewound again. At the same time, the amount of film movement is detected in the same manner as described above, and a pulse 29 corresponding to the amount of film movement is applied to the counter 23 and added. When the value of the counter 23 reaches a value corresponding to rewinding one frame of film, the film rewinding stop signal 27 is again given to the feeding circuit 24, and rewinding of one frame of film is completed.Rewinding of one frame of film is completed. The signal 32 is applied to the release circuit 20 and set to a release enabled state.

It should be noted that the data imprinting apparatus of each of the above-mentioned embodiments is particularly applicable to the data imprinting apparatus described in Patent Application No. 61-58928 filed by the present applicant.
- Space efficiency is improved by combining the camera with a simple loading camera configured so that only the storage chamber can be opened and closed. For example, in this simple loading camera, it is necessary to place a feed roller for driving the film between the shooting screen frame and the cartridge storage chamber, so this space is required, and the upper half of the camera is used to imprint data. <Effects of the Invention> As explained above, the present invention provides a structure in which the feed mechanism is configured in the lower half of the device. A data imprinting section is installed on the
The film is wound on a spool in advance, and data is imprinted on the area outside the shooting screen frame as the film is rewound into the cartridge after each frame is taken, so all data is saved up to the final frame of the film. It has the effect of making imprinting possible.

In addition, by interrupting rewinding in the middle of rewinding one frame of film and imprinting at that time, the distance between the shooting screen frame and the cartridge storage chamber can be reduced, and the camera size can therefore be made more compact. There are some advantages to doing so.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of one embodiment of a camera having a data imprinting device according to the present invention, FIG. 2 is a schematic perspective view of another embodiment of the present invention, and FIG. 3 is also an explanation of the imprinting timing. 4 are schematic configuration diagrams of still another embodiment of the present invention, and FIG. 5 is a simplified block circuit diagram for operating the data imprinting device of the embodiment shown in FIGS. 2 to 4. . 1... Photographing lens, 2... Film, 3... Patrone, 4... Illumination lamp, 5... Data display, 6... Imaging lens, 7... Data imprinting Part, 8
... Shooting screen frame, 9... Data characters, 10... Spool Figure 1 Figure 3 3a, Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1. In a camera in which a data imprinting device is built into the camera and data characters are imprinted from the emulsion side of the film, the data imprinting section is located between the photographic screen frame and the cartridge storage chamber. After the film is wound on a spool in advance, it is rewound into the cartridge one frame at a time each time the film is taken. A camera having a data imprinting device, characterized in that the data imprinting unit is operated at that position to perform data imprinting. 2 Stop the film rewinding at a predetermined position while rewinding one frame of the film into the cartridge, operate the data imprinting section at that position, and start rewinding after imprinting is completed.1 A camera having a data imprinting device according to claim 1, characterized in that it is configured to complete frame rewinding.