JPH05142642A - Camera provided with data imprinting function - Google Patents

Abstract

PURPOSE:To imprint completed data on the final frame of film without wasting the film by feeding the film by an amount obtained by adding a film amount required for completing data imprinting on a next frame to the amount of one frame of the film after photographing and then rewinding the film by the film amount of the next frame. CONSTITUTION:A detecting means 23 for detecting the fed state of the photographic film 11 is arranged on the upper part of an aperture image frame 19. When the number of exposed frames attains specified number, a specified frame number signal is outputted. Hereafter, the film 11 is fed by the amount obtained by adding the film amount required for completing data imprinting on the next frame to the amount of one frame after every photographing, and then it is rewound by the film amount required for completing data imprinting on the next frame. When the above actions can be performed, the data is imprinted on the film 11, and when they can not be performed, the data is not imprinted on the film 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having a data imprinting function having a function of imprinting data such as date on a photographing screen.

[0002]

2. Description of the Related Art Generally, in a camera having a data imprinting function that imprints data such as date on a photographing screen, a light emitting element emits light during film winding which is continuously performed after each photographing. , Data is imprinted.

Therefore, in the photographing frame near the end of the film, the end of the film is reached during the film winding operation in which the data is imprinted, and the imprinting of the data ends without being completed. Such pictures are very unsightly.

Therefore, conventionally, for example, JP-A-63-28 is used.
As disclosed in Japanese Patent No. 4532 and Japanese Patent Application Laid-Open No. 3-7924, after the specified number of frames for film, for example, 3
In the case of a 6-shot film, a camera has been developed that rewinds without shooting even though 37 to 38 shots can be taken in practice.

[0005]

However, in such a conventional camera having a data imprinting function, in practice, the number of photographed frames of the film is equal to or more than, for example, 36.
In the case of a single-shot film, although it is possible to shoot about 37 to 38 films, the film is rewound without shooting, and there is a problem that the film is wasted.

The present invention has been made in order to solve the above-mentioned conventional problems, and it is possible to prevent the film from being wasted.
Another object of the present invention is to provide a camera having a data imprinting function capable of imprinting the completed data on the final frame of a film.

[0007]

A camera having a data imprinting function according to a first aspect of the present invention comprises a film feeding means for winding and rewinding a film (for example, reference numeral 17 in FIG.
18), imprinting means (for example, reference numerals 39 and 41 in FIG. 1) for imprinting data in the photographed screen during film feeding immediately after photographing by the film feeding means, and the number of frames photographed. The number of photographed frames counting means (for example, step 16 in FIG. 3) and the predetermined frame number setting means for setting a predetermined number of frames in the film (for example, step 1 in FIG. 3)
And the number of photographed frames counted by the photographed frame number counting means and the predetermined number of frames set by the predetermined frame number setting means are compared, and when the number of photographed frames reaches the predetermined number of frames, the predetermined number of frames is calculated. A frame number comparing means for outputting a signal (for example, step 4 in FIG. 3), and after a predetermined frame number signal is inputted from the frame number comparing means, after filming, one film of the film and data of the next frame are recorded. A control means (for example, the step shown in FIG. 3) for feeding the amount of film necessary for the completion of the imprinting, and then rewinding the amount of the film necessary for the completion of the imprinting of the data of the next frame to rewind the film. 6 to 15).

A camera having a data imprinting function according to a second aspect is the camera according to the first aspect, which detects a film end detecting means (for example, step 10 in FIG. 3).
When the film end detecting means detects the end of the film, the control means stops the feeding of the film.

In the camera having the data imprinting function of claim 3, in claim 1, the control means starts rewinding of all the films after stopping the feeding of the films (for example, step 17 in FIG. 3). It is a thing.

A camera having a data imprinting function according to a fourth aspect is the camera according to the first to third aspects, wherein the predetermined number of frames of the predetermined number of frames setting means is a storage means (for example, the ROM 49 of FIG. 1).
It has been stored in advance.

A camera having a data imprinting function according to a fifth aspect is the camera according to the first to third aspects, wherein the predetermined number of frames of the predetermined number of frames setting means can be changed by an external input. A camera having a data imprinting function according to claim 6,
In the first aspect, the predetermined number of frames of the film is a specified number of frames for film photographing.

A camera having a data imprinting function according to a seventh aspect is the camera according to the sixth aspect, wherein the predetermined frame number setting means reads the prescribed number of frames to be photographed from the DX code of the film cartridge (for example, reference numeral 57 in FIG. 5). Is.

[0013]

In the camera having the data imprinting function according to the first aspect, when the number of photographed frames reaches the predetermined number of frames, the predetermined number of frames signal is output, and thereafter, after each photographing,
The film is fed by the amount of one frame plus the amount of film required to complete the data imprinting of the next frame, and thereafter, the amount of film required to complete the data imprinting of the next frame is rewound.

In the camera having the data imprinting function of the second aspect, when the end of the film is detected, the feeding of the film is stopped. In the camera having the data imprinting function of the third aspect, the rewinding of all the films is started after the film feeding is stopped.

In the camera having the data imprinting function of claim 4, the predetermined number of frames is stored in advance in the storage means.
In the camera having the data imprinting function according to the fifth aspect, the predetermined number of frames can be changed by external input.

In the camera having the data imprinting function of the sixth aspect, the predetermined number of frames of the film is set as the prescribed number of frames for film photographing. In the camera having the data imprinting function according to claim 7, the prescribed number of frames is D of the film cartridge.
Read from the X code.

[0017]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an embodiment of a camera having a data imprinting function of the present invention.
Indicates a photographic film.

This photographic film 11 is accommodated on one side in the film cartridge 13 and on the other side in the spool 1 of the camera.
It is wound around 5. A feeding motor 18 driven by a feeding motor driver 17 is arranged on the spool 15 side.

The two-dot chain line in the center of the photographic film 11 shows the aperture screen 19, and the two-dot chain line on the spool 15 side shows the photographed screen 21. In this embodiment, the photographic film 1 is displayed on the upper portion of the aperture screen 19.
The detection means 23 which detects the feeding state of No. 1 is arranged.

The detection means 23 has a film feeding detection roller 25 which is brought into contact with the photographic film 11 which is urged by the pressing spring 24. The film feeding detection roller 25 has a shaft portion 27. A circular plate-shaped encoder 29 is fixed via.

The encoder 29 has a large number of slits 31 formed radially from the center. A photo interrupter 33 is arranged so as to sandwich the encoder 29, and the photo interrupter 33 detects the slit 31 each time the photo interrupter 33 detects the slit 31.
The feeding pulse signal is output to the CPU 37.

In front of the photographed screen 21 of the photographing film 11, a plurality of light emitting elements 39 are linearly arranged at predetermined intervals, and the light emitting elements 39 are connected to the CPU 37 by a data imprinting circuit. The light emission is controlled by 41.

The light emitted from the light emitting element 39 is guided to the data imprinting area 45 of the photographed screen 21 being fed through the optical system having the image forming lens 43, whereby the dot matrix data 47 is formed. Imprint is performed.

The CPU 37 is configured to receive a release signal from the release switch SW and a film predetermined frame number signal from a ROM 49 which stores a predetermined frame number of the film 11.

FIG. 2 shows a state in which the photographed screen 51 is rolled up by the camera of this embodiment.
Indicates the position of the photographed screen 51 immediately after photographing. At this time, the light emitting element 39 is located at a predetermined distance from the photographed screen 51 in the winding direction H of the photographed screen 51.

At this point of time, since the photographed screen 51 is not fed, the pulse number P of the feeding pulse signal output from the photo interrupter 33 is zero.
(B) shows a state in which the photographed screen 51 is wound up in the winding direction H by a predetermined amount.

(C) shows a state in which the photographed screen 51 is further rolled up by a predetermined amount, and the light emitting element 39 is positioned at the start position of the data imprinting area 45 of the photographed screen 51.

At this point, the photo interrupter 3
The pulse number P of the feeding pulse signal output from 3 is Q ₁ . (D) shows a state in which the photographed screen 51 is further rolled up by a predetermined amount, and the light emitting element 39 is located at the end position of the data imprinting area 45 of the photographed screen 51.

At this point, the photo interrupter 3
The pulse number P of the feeding pulse signal output from 3 is Qn. The film feed amount up to this point is I.

(E) shows a state in which the photographed screen 51 is further wound by a predetermined amount, and the winding of the photographed screen 51 is completed. At this time point, the pulse number P of the feeding pulse signal output from the photo interrupter 33 is R.

The film feed amount up to this point is J. The details of the camera having the data imprinting function of the present invention will be described below with reference to the flowcharts shown in FIGS.

In step 1 in FIG. 3, the film 1
A predetermined number of frames N of 1 is set. This predetermined number of frames is, for example, 24 frames in this embodiment, since the film 11 for taking 24 images is generally used.

It is needless to say that the predetermined number of frames may be 12 or 36. In step 2, the release switch SW is turned on, the film 11 is exposed, and the subject is photographed.

In step 3, the count value n of the number of already photographed frames is read. In step 4, it is judged whether or not the count value n of the number of photographed frames has reached the predetermined number of frames N. If not, the process proceeds to step 5 described in detail in FIG. move on.

In step 6, the winding drive is started and the film 11 is wound up. In step 7, the feeding pulse signal generated by winding the film 11 is counted.

In step 8, it is judged whether or not the pulse number P of the feeding pulse signal is Q ₁ ≤P≤Qn. If it is out of the range, the process proceeds to step 10, and if it is in the range, the step Proceed to 9.

In step 9, the data imprinting circuit 41 is driven to imprint the data on the surface of the film 11 in synchronization with the winding of the film 11. In step 10, it is determined whether or not the film 11 has reached the end by determining whether or not the feeding pulse signal is output. When the feeding pulse signal is not output and it is determined that the film 11 has reached the end, the process proceeds to step 17, and when it has not reached the end, the process proceeds to step 11.

In step 11, it is judged whether the pulse number P of the feeding pulse signal is P = R + Qn. That is, the film feed amount J (the pulse number of the feed pulse signal is R) until the completion of the winding of one frame after photographing is added to the film feed amount I (the feed pulse signal It is determined whether or not the number of pulses is the number of pulses plus Qn).

If so, the next frame has the amount of film 11 required for the completion of data imprinting, so the process proceeds to step 12, and if not, the process returns to step 7.
In step 12, the winding drive is stopped and the rewinding drive is started.

In step 13, the feeding pulse signals generated as the film 11 is rewound are counted. In step 14, it is judged whether or not the number of pulses of the feeding pulse signal generated with the rewinding of the film 11 has become Qn. If not, the process returns to step 13,
If so, go to step 15.

In step 15, the rewinding drive of the film 11 is stopped, and the process proceeds to step 16. Step 16
Then, 1 is added to the number of photographed frames n, and then step 2
Proceed to.

In step 17, the winding drive is stopped and the entire film is rewound. 4 is shown in FIG.
The subroutine of step 5 is shown. This subroutine shows the operation when the number of photographed frames n is not equal to the predetermined number of frames N in step 4.

That is, in step 51, the winding drive is started and the film 11 is wound up.
In step 52, the feeding pulse signal generated by winding the film 11 is counted.

In step 53, it is determined whether or not the pulse number P of the feeding pulse signal is Q ₁ ≤P≤Qn. If it is out of the range, the process proceeds to step 55, and if it is in the range, the step Proceed to 54.

In step 54, the data imprinting circuit 41 is driven to imprint the data on the film 11 surface in synchronization with the winding of the film 11.
In step 55, the number P of pulses of the feeding pulse signal
, It is determined whether P = R.

When it is, the film 11 has been wound by one frame, so that the winding drive is stopped in step 56. In the camera having the data imprinting function configured as described above, when the number of frames photographed reaches a predetermined number, after that, the film 11 becomes one frame after each photographing. , The amount of film 11 required to complete the imprinting of the data of the next frame is fed, and then the amount of the film 11 required to complete the imprinting of the data of the next frame is rewound, and when these operations are possible. ,
The data is imprinted on the film 11, and when it cannot be imprinted, the data is not imprinted on the film 11, so that the film 11 is not wasted, and the final film frame of the film 11 is completed. Data can be imprinted.

That is, in the above-mentioned camera, for example,
Even with a film of 36 shots, it is possible to shoot about 37 to 38 sheets, and the completed data can be reliably printed on the final frame of the film.

In the above-mentioned camera, the film 11
When the end of the film 11 is detected, the feeding of the film 11 is stopped, and the rewinding of all the films is started after the feeding of the film 11 is stopped. Therefore, the film 11 is not wasted and the film 11 is not wasted. The completed data can be surely imprinted on the final shooting frame.

Further, in the above-mentioned camera, since the predetermined number of frames is stored in the ROM 49 in advance, it is not necessary to set the predetermined number of frames. In the embodiment described above, an example in which the predetermined number of frames is set by reading the number of film frames stored in advance in the ROM 49 has been described, but the present invention is not limited to such an embodiment. For example, the camera may be provided with an external input unit for inputting a predetermined number of frames so that the predetermined number of frames can be changed by external input.

Further, in the above-described embodiment, an example in which one data imprinting area 45 is formed has been described, but the present invention is not limited to this embodiment, and, for example, the data imprinting area may be two. Alternatively, film winding and rewinding operations may be separately added for data imprinting into these two data imprinting areas.

FIG. 5 shows another embodiment of the present invention. In this embodiment, the read contact 57 reads the specified number N of photographing frames from the DX code 55 arranged on the film cartridge 13. The specified number N of shooting frames is input to the CPU 37 as a DX signal.

Then, the prescribed number N of frames to be photographed is set as the predetermined number N of frames of the film in step 1 in FIG. Other than that, the configuration is almost the same as that of the above-described embodiment, and thus detailed description will be omitted.

The same effect as that of the above-described embodiment can be obtained also in the camera having the data imprinting function configured as described above, but in this embodiment, the predetermined number of frames of the film is the prescribed photographing of the film. Since it is the number of frames, it is possible to reduce the operation of winding and rewinding,
Further, since the specified number of frames to be photographed is read from the DX code of the film cartridge, it is possible to easily set the specified number of frames to be photographed automatically.

[0054]

As described above, in the camera having the data imprinting function according to any one of claims 1 to 3, when the number of photographed frames reaches a predetermined number, a predetermined number of frames signal is output. After that, after each photographing, the film is fed by the amount of one frame plus the amount of film necessary for completing the data imprinting of the next frame, and thereafter, the film necessary for completing the data imprinting of the next frame. When the film amount is rewound and these operations are possible, the data is imprinted on the film, and when it is not possible, the data is not imprinted on the film. Moreover, the completed data can be imprinted on the final frame of the film.

In the camera having the data imprinting function of the fourth aspect, since the predetermined number of frames is stored in the storage means in advance, it is not necessary to set the predetermined number of frames. In the camera having the data imprinting function of the fifth aspect, the predetermined number of frames can be changed by an external input, so that the predetermined number of frames can be easily changed.

In the camera having the data imprinting function according to the sixth aspect, since the predetermined number of frames of the film is the specified number of frames for filming, it is possible to reduce the winding and rewinding operations.

In the camera having the data imprinting function of the seventh aspect, the specified number of frames is DX of the film cartridge.
Since it is read from the code, it is possible to easily set the specified number of frames to be photographed automatically.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a camera having a data imprinting function of the present invention.

FIG. 2 is an explanatory diagram showing a rolled-up state of a photographed screen by the camera having the data imprinting function of FIG.

FIG. 3 is a flowchart showing an operation of the camera having the data imprinting function of FIG.

4 is a flowchart showing a subroutine of step 5 of FIG.

FIG. 5 is a diagram showing another embodiment of a camera having a data imprinting function of the present invention.

[Explanation of symbols]

 11 Film 21 Photographed Screen 39 Light Emitting Element 49 ROM

Claims (7)

[Claims] 1. A film feeding means for winding and rewinding a film, and an imprinting means for imprinting data on a photographed screen during film feeding immediately after photographing by the film feeding means, Photographing frame number counting means for counting the number of photographed frames, predetermined frame number setting means for setting a predetermined frame number of the film, the number of photographing frames counted by the photo frame counting means, and the predetermined frame number setting means The predetermined number of frames set in step 1 is compared, and when the number of photographed frames reaches the predetermined number of frames, the number-of-frames comparing means for outputting a predetermined number-of-frames signal and the predetermined number-of-frames signal is input from the number-of-frames comparing means. After the time, after filming, the film is fed by one frame, plus the amount of film necessary to complete the imprinting of the data of the next frame, and thereafter, the amount of film required to complete the imprinting of the data of the next frame. Rewind And control means provided for shooting Tsugikoma,
A camera having a data imprinting function, characterized by having. 2. A film end detecting means for detecting the end of the film, wherein when the film end detecting means detects the end of the film, the control means stops the feeding of the film. A camera having a data imprinting function according to claim 1. 3. A camera having a data imprinting function according to claim 2, wherein the control means starts rewinding of all the films after the feeding of the films is stopped. 4. The data imprinting function according to any one of claims 1 to 3, wherein the predetermined number of frames of the predetermined number of frames setting means is stored in advance in the storage means. camera. 5. A camera having a data imprinting function according to any one of claims 1 to 3, wherein the predetermined number of frames of the predetermined number of frames setting means can be changed by an external input. 6. A camera having a data imprinting function according to any one of claims 1 to 3, wherein the predetermined number of frames of the film is a prescribed number of frames of film photographing. 7. A camera having a data imprinting function according to claim 6, wherein the predetermined number-of-frames setting means reads the specified number of frames to be photographed from the DX code of the film cartridge.