JPH0322612B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a film for an endoscope camera, and more particularly to a film for an endoscope camera developed by a general automatic developing device.

Generally, 16mm film is used for endoscope cameras. Previously, only one type of 16mm film was available: 20 frames. Recently, there has been a demand for long films having a number of frames of 20 or more, such as 40 frames or 60 frames.

However, automatic developing systems and filing systems for photographed film have already been standardized for 20 frames and are fully equipped in countries around the world. Therefore, newly providing each system for long lengths is very complicated and brings about an unnecessary increase in cost.

Therefore, it may be possible to cut out the film every 20 frames. However, after cutting, the plurality of film pieces are developed in a developing system together with film pieces obtained by similarly cutting other lengths of film. Therefore, if film pieces cut and separated from different lengths of film are mixed together, it becomes impossible to know from which length of film the film piece was separated, and the film cannot be returned to the legitimate client after development is completed. It had drawbacks.

This invention has been made in view of the above circumstances, and its purpose is to provide an internal view that allows identification of which blocks are separated from a common film even if each block is separated after cutting. Our objective is to provide film for mirror cameras.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a film for an endoscope camera according to the present invention will be described in detail below with reference to the accompanying drawings.

In order to more easily understand the film of the endoscope camera of the present invention, an example of a camera and an endoscope using this film will first be described.

FIG. 1 shows an endoscope camera 12, which houses a film cassette 10 having a film according to an embodiment described in detail later, mounted on an endoscope 14. 14 is an operation unit 16
An insertion section 18 is provided continuously with the operating section 16 and has an irradiation window and an observation window at its tip, and is made of a flexible tube, and a photographing light or illumination unit that illuminates the subject section irradiated from the irradiation window. It is composed of a light source device 20 that generates diagnostic light, and a guide section 22 that connects the light source device 20 and the operation section 16. An eyepiece section 24 is provided on the side opposite to the side where the insertion section 18 of the operation section 16 is provided, and the endoscope camera 2 is attached to this eyepiece section 24. There is. An image guide (not shown) that connects the observation window and the eyepiece is provided in the insertion section 18, and this image guide passes the image of the Hiko object obtained through the observation window through the image guide. This is for guiding the lens to the eyepiece section 24. Further, a light guide that connects the irradiation window and the light source device 20 is provided in the insertion portion 18 and the guide portion 22, and this light guide receives photographing light or collation light from the light source device 20. This is to guide the subject through the irradiation window.

As shown in FIG. 2, an aperture 26 is provided on the film photosensitive surface side of the film cassette 10, and the photosensitive surface of the film 28 is positioned within this aperture 26 so that the image of the subject is captured by a photographing lens (not shown). is imaged. One end of the film 28 is fixedly attached to a film winding shaft (not shown) so that it can be wound up by rotation of the film winding shaft. This film winding shaft is configured to wind the film 28 in the right direction as indicated by arrow A in the figure by a film feeding device 30 shown in FIG.

The film 28 according to the embodiment of the present invention is formed for so-called 40-frame shooting, which is twice the length of the conventional 20-frame shooting film, and has a notch 32 as shown in FIG. ing. This notch 32 is formed at the upper end of the film 28, and is located at the left end of the photographable range on the left side in the figure of the photographic range of the 20th frame. That is, it is provided so as to be located between the so-called photographing range of the 21st frame and the photographing range of the 22nd frame. Also, those located in the shooting range on both sides of this notch (32),
That is, the same identification data 28a is formed on each portion of the film 28 other than the portion where the image of the subject is imprinted. This identification data 28a
In this embodiment, is a 6-digit number selected from a random number table.

The film feeding device 30 is configured to detect the notch 32 and form a blank feeding portion 28b in the front and rear directions with the notch 32 as a boundary.

When the film constructed as described above is used for photographing with an endoscopic camera, the film advance device 30 detects the notch 32 of the film 28 when the 20th frame has been photographed, and the film is empty for two frames. Feeding part 28b
The film 28 is wound and driven three times so as to form . That is, with the notch 32 as a boundary, the front and rear idle feeding portions 28b each have identification data 28a.
will be formed by including.

Therefore, after the shooting is completed, the film 2 is placed in a darkroom for development using a general 20-frame development system.
Even if 8 is cut using notch 32 as a mark,
Since identification data 28a is formed on each of the cut film pieces for 20 frames, it is possible to reliably identify from which long film for 40 frames the film was cut and separated.

Furthermore, when developing the film 28, which is twice as long as a typical 20-frame film, the film 28 can be cut in a dark room using the notch 32 as a guide, making the cutting operation easy. become. By cutting the film 28 at this notch 32, the film 28 is divided into two films of the same length as a conventional 20-frame film, and each film is divided into two films of the same length as a conventional 20-frame film. can be applied to filing systems. Furthermore, since the film 28 is provided with a blank feed portion 28b at the location where the notch 32 is set, the film can be cut without damaging the photographing range. Furthermore, since the cut portion is the idle feed portion 28b, this portion can be used as a pinching margin for the developing system, and the film can be developed without spoiling the photographed images on both sides of the cut portion. .

In the above embodiment, identification data is provided in advance on the idle feed portions formed on both the left and right sides of the notch 32. However, without being limited to this, for example, as shown in FIG. 4, identification data may be provided in a position corresponding to each photographic frame that does not interfere with the photographing of the subject with this photographic frame. good. With this structure, the film 28 can also be applied to a film feeding device that does not use the notch 32 but performs blank feeding based on the count value of a film counter. Also,
It goes without saying that this configuration can be applied to a film feeding device that does not have a blank feeding section.

Further, as shown in FIG. 5, identification data may be provided on the leading edge (so-called leader part) 28c and the trailing edge (so-called trailer part) 28d of the film 28. With this configuration, the same effect as the film shown in FIG. 4 can be obtained.

Furthermore, the identification data in the above embodiment was explained using six-digit numbers using a random number table.
However, it is not limited to this, for example, in addition to alphabetic characters and symbols,
A similar effect can be obtained with pictures, etc.

Furthermore, this identification data may be optically imprinted in advance, formed by applying pressure, attached, or formed by drilling holes, regardless of the method used to set it. Needless to say, there is no such thing.

Further, in the above embodiment, a film 28 having twice the length of a conventional 20-frame film was used. However, without being limited to this,
For example, it may have three times the length.

As described in detail above, the film for the endoscopic camera according to the present invention has a predetermined plurality of frames as one block, and identification data at a predetermined position of each block to indicate that each block constitutes the same film. It is characterized by having the following. Therefore,
Even if each block is separated after cutting, it is possible to identify which blocks were separated from a common film, and they will not be mixed together if stored together with other patients' films. Therefore, it is possible to provide a film for an endoscope camera that is easy to identify, prevents misdiagnosis, and prevents unexpected accidents.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an endoscope camera in which a film according to the present invention is stored together with an endoscope, FIG. 2 is a perspective view showing a cassette that stores the film taken out, and FIG. FIG. 4 is a front view showing a second embodiment of the film according to the present invention, and FIG. 5 is a front view showing a third embodiment of the film according to the present invention. . 12...Endoscope camera, 28...Film,
28a...Identification data.

Claims (1)

[Claims] 1. When a block is made up of multiple frames set in advance and cut into multiple blocks and separated, the multiple cut blocks constitute the same film at a predetermined position outside the photographing range of each block. A film for an endoscope camera, characterized in that it is provided with identification data for displaying.