JP2838708B2 - camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention takes a picture of a film halfway, replaces it with another film of a different type, takes a picture, and then replaces the original film again. The present invention relates to a camera capable of continuously shooting after the number of previously shot images.

[Conventional technology]

A conventional camera having a function similar to such a function is disclosed in, for example, JP-A-59-121324. In this conventional camera, a single camera is provided with a plurality of film storage portions so that a plurality of films stored in the storage portions can be used alternately.

According to this conventional camera, after loading a film, it is possible to exchange the film with another film in the middle without having to take all of the number of shots, and one camera shoots the same screen almost simultaneously using different films alternately. Can, standards,
It is possible to shoot the same scene almost simultaneously by using different types of films in terms of properties, applications, and the like.

[Problems to be solved by the invention]

However, in such a conventional camera,
Since a single camera body is provided with a plurality of film storage sections, it is inevitably increased in size and weight, resulting in poor portability, and a complicated mechanism, which is a very important factor for a camera. There is a problem that it is difficult to obtain the accuracy of the distance to the film surface.

[Means for solving the problem]

Accordingly, the present invention solves the above problems by identifying or identifying a film to be used among a plurality of films, photographing number storing means for storing the number of photographed films, and replacing the film during use. The apparatus comprises a rewinding means for rewinding a film taken halfway, and a winding means for winding the film up to the number stored in the storage means when reusing a film exchanged during use.

Means for applying a photographed mark around the photographed frame of the film; rewinding means for rewinding the film during use; and winding up the film by detecting the photographed mark when reloading the film. Means may be provided.

(Operation)

According to the camera having such a configuration, the film that has been partially photographed is rewound once, removed from the camera, another film of a different type is newly loaded, photographed, and then replaced with the original film again and photographed last time. Wind up to the number of
Since subsequent shooting can be performed, the same scene can be shot almost simultaneously by using a plurality of films alternately with one camera.

In addition, since the film is taken out and exchanged for photographing, a plurality of storage units are not required unlike the conventional camera, which deteriorates the portability of the camera and deteriorates the accuracy of the distance from the lens to the film surface. Can be prevented.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 to 3 are views showing a first embodiment of a camera capable of replacing different types of film in the middle according to the present invention.

In FIG. 1, reference numeral 1 denotes a camera. In addition to the release button 4, the camera 1 has a film number switch 2 (type identification means), a counter display window 5, and an intermediate rewind button 7.
(Midway rewinding means) and a rewind / counter reset button 8 are provided.

In addition, as shown in FIG. 2, a RAM 11 (photograph number storage means), a rewinding means 13, and a hoisting means 14 are provided, and a control means for exchanging signals with these parts and performing a predetermined control action. There are twelve.

First, a description will be given of a case where two types of films, for example, a black-and-white film and a color film are alternately used in the camera configured as described above.

First, the patrone of the black and white film 9 is stored in the patrone storage position 3 of the camera 1 and the film number switch 2
When No. 1 is turned on, the black-and-white film 9 is specified as No. 1. Then, the camera 1 is set to the film use state and the back cover 6 is set.
Is closed, the number of shots of the black and white film 9 of No. 1 is initially zero, but prewinding is performed and "1" is displayed on the counter display window 5. Then, when one picture is taken, the counter display window 5 displays "2". In this way, the pictures are taken one after another, and the color film 10 is displayed with the counter display window 5 set to "6".
Suppose you want to shoot with.

At this time, first turn on the rewind button 7 on the way,
As shown in FIG. 3, the number of shots "6" of the black and white film 9 of No. 1 is stored in the RAM 11, and then the black and white film 9 is rewound. At this time, the leading end of the film is not completely wrapped in the cartridge. Stop rewinding at the appropriate time. When the rewinding is completed, the No. 1 black-and-white film 9 is taken out of the camera 1, a new color film 10 is stored, and then the No. 2 of the film number switch 2 is turned on, and the color film 10 is set to No. Identify as 2.

Then, when the camera 1 is in the film use state and the back cover 6 is closed, the number of photographed images of the color film 10 of No. 2 is initially zero, but prewinding is performed and “1” is displayed on the counter display window 5. . Then, when one picture is taken, the counter display window 5 displays "2", and it is assumed that the user wants to take pictures one after another in this manner, and take the picture again with the black and white film 9 with the counter display window 5 set to "11". .

Also at this time, first turn on the rewind button 7 on the way,
As shown in FIG. 3, the number of shots "11" of the color film 10 of No. 2 is stored in the RAM 11, and then the color film 10 is rewound, but also at this time, the leading end of the film is not completely wrapped in the cartridge. Stop rewinding at the appropriate time. When the rewinding is completed, the No. 2 color film 10 is taken out of the camera 1, the black-and-white film 9 is stored again, the back cover 6 is closed, and the No. 1 of the film number switch 2 is turned on.

Then, since the number of previous shots "6" of the No. 1 black-and-white film 9 is stored in the RAM 11, the winding means 14 winds up the black-and-white film 9 to a position where the seventh picture can be taken, and displays the counter display window. 5 displays "7". When a new film is loaded in the camera 1, when the back cover 6 is closed, the counter display window 5 is automatically wound until the counter display window becomes "1". When the back cover 6 is simply closed, the film is not automatically wound up, but only when a switch corresponding to the film number of the film number switch 2 is pressed, the winding means 14 winds the film up to a predetermined number of recordings.

It is preferable that the winding amount at the time of this winding be slightly extra, such as “7” + α. This is because, as shown in the color film 10 in FIG. 1, the length l of the film leading from the throne is not uniform. This is to prevent this.

After taking one image after winding up, the counter display window 5 displays "8" when the image is taken one after another. When the end of the monochrome film 9 is detected, the rewinding means 13 is displayed. Automatically rewinds the black-and-white film 9 in auto U-turn, and stores the contents of the RAM 11 and the counter display window 5.
Is reset to “0”.

If the user wants to develop the film before loading all the images while loading the film, the black and white film 9 is completely rewound by the rewind and counter reset button 8 and the contents stored in the RAM 11 are forcibly reset. Set to “0”. Also, when it is desired to immediately develop a film that has been photographed halfway while the film is not loaded, or when the film is unintentionally developed, the film No. of the film number switch 2 is used.
By simultaneously pressing the button corresponding to (1) and the rewind / counter reset button 8, the stored contents can be canceled and reset.

By the way, if you want to check the number of the film in the middle after taking the film once and take it out halfway, by pressing the switch corresponding to the film number of the film number switch 2, the RAM 11 is displayed in the counter display window 5. The stored number is displayed.

FIG. 4 shows a second embodiment of the camera according to the present invention.
In the first embodiment, the film number is specified or identified by the film number switch 2. However, in the second embodiment, a film number identification hole is formed at the front end of the film, and the film number is determined by the hole. No. for reading the No. is provided. As a means for reading the hole, a photocoupler, a switch that conducts when the hole passes, or the like is used, and each element constituting the means is provided at a position facing each other across the film surface.

In FIG. 4 (a), an identification part 16 capable of opening three holes 16a to 16c is provided at the leading end of the film, and as shown in FIG. A single hole is drilled at different positions so that three types of films can be used alternately. As shown in FIG. 3C, if not only one hole but also two or more holes are formed in the identification unit 16, not only three types but also more types of films are alternately used. It is possible to do.

FIG. 5 shows a third embodiment of the present invention. In the second embodiment, the identification portion 16 is provided at the center of the width of the film. In the third embodiment, as shown in FIG. 5 (a), the identification portion 17 is provided at the side of the film. Differs in that Also in this third embodiment, the fourth embodiment of the second embodiment is described.
As in the case of the identification unit 16 shown in FIG. 9C, many types of films can be used alternately.

If the identification number is used to identify the film number, it is possible to load the used film only halfway into the camera 1 again without pressing the film number switch 2 and shoot the film. The winding means 14 automatically winds up to the next frame position, and it is possible to continuously shoot.

FIG. 6 shows a fourth embodiment of the present invention. The second and third
In the embodiment, the film numbers are identified by the identification units 16 and 17. However, in the fourth embodiment, each time the shooting is completed, the film number is located on the side of the shot frame where the image is not affected. A hole 20 is formed as a mark, and means for reading the hole 20 as a mark is provided. According to the fourth embodiment, the number-of-photographs storage means becomes unnecessary, and when the film is loaded, it is only necessary to wind the film until the mark hole 20 disappears.

In the above-described second and third embodiments, the holes and notches can be formed at the time when the film is loaded first and the rewinding for the exchange during the photographing is completed. In addition, when removing the film, dust generated by perforation can be easily removed, and the inside can be prevented from being clogged with dust.

Further, by providing a switch for winding up one frame at a time after loading the film, the same function as in the above embodiment can be performed if the photographer memorizes which film was shot and how many frames were shot. .

When a plurality of films having different film sensitivity codes are used, the identification of the film number can be performed by the film sensitivity code, and the identification of the film number is manually performed as in the first embodiment. There is no need to do it. For example, there may be a case where films having different ISOs are used alternately.

Instead of making a hole as in the second to fourth embodiments, a magnetic seal may be attached to change magnetically, and magnetically read when reloaded. For example, (1) a film cartridge attached with magnetic powder,
(2) A magnetic sticker attached to the film cartridge,
(3) A magnetic seal (with No. 1 to 3 recorded in advance) corresponding to the film number switch 2 of the first embodiment may be used. However, in the above cases (1) and (2), a magnetic symbol providing means is provided on the camera 1 side.

Further, in the above-described embodiment, the case of two types of films has been described, but three types or more types of films can be used.

Further, when holes are formed in the film as in the second and third embodiments, the number is not limited to three but may be two or four or more.

〔The invention's effect〕

As described above, according to the present invention, the same scene can be photographed almost simultaneously by using a plurality of films alternately with one camera.

In addition, since the film is taken out and exchanged for photographing, a plurality of storage units are not required unlike the conventional camera, which deteriorates the portability of the camera and deteriorates the accuracy of the distance from the lens to the film surface. Can be prevented.

[Brief description of the drawings]

1 to 3 are views showing a first embodiment of a camera according to the present invention. FIG. 1 is a plan view of the camera and a perspective view of a film to be loaded. FIG. Is RA
FIG. 4 is a conceptual diagram of M (number of photographed images storing means), and FIG. 4 is a diagram showing a second embodiment of the present invention. FIG. 4 (a) is an enlarged view of the leading end of the film, and FIGS. 5 is an enlarged view showing each operation state of the identification unit, FIG. 5 is a view showing a third embodiment of the present invention, FIG. 5 (a) is an enlarged view of the leading end of the film, and FIG. FIG. 6 is a partially enlarged view of a film showing a fourth embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Camera 2 ... Film number switch (type identification means) 3 ... Patrone storage position 4 ... Release button 5 ... Counter display window 6 ... Back cover 7 ... Midway rewind button (midway rewinding means) 8 Rewind and counter reset button 9 Black-and-white film 10 Color film 11 RAM (storage for storing the number of shots) 12 Control means 13 Rewind means 14 Winding means 16, 17 Identification part 16a ~ 16c ...... Hole 20 ...... Mark hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 17/00 G03B 17/24 G03B 17/36

Claims (2)

(57) [Claims] An identifying means for identifying or identifying a loaded film when a plurality of films are alternately loaded; a photographed number storing means for storing a photographed number of the film; and a film number during use of the film. And a winding means for winding the film up to the number stored in the storage means when reloading the film. 2. A means for providing a photographed mark around a photographed frame of a film, a rewinding means for rewinding the film during use, and detecting the photographed mark when reloading the film. And a winding means for winding the film.