JPS63173190A - Detector for number of inserted photosensitive materials - Google Patents

Abstract

PURPOSE:To detect the number of photosensitive materials without exposing them by fitting a gauge main body which has a hole extending to the inside of a box to the external surface of the box into which photosensitive materials are inserted, and providing a gauge head in the gauge main body. CONSTITUTION:The gauge main body 3 which has the hole 6 extending to the inside of the box 1 is fitted to the external surface of the box 1 into which sheet type photosensitive materials 2 are inserted. A gauge shaft 5 is held in this main body 3 movably nearly at right angles to the photosensitive materials 2, and the gauge head 7 is provided to the shaft 5. When the rest of the photosensitive materials 2 in the box 1 is detected, the upper part of the head 7 is pressed down with a finger to move down the shaft 5, and a disk part 6 at the lower end is made to abut on the uppermost surface of the photosensitive materials 2. Consequently, the head 7 stops at a position of height corresponding to the rest of the photosensitive materials 2 in the box and the position of the height is read on a scale with a reference line 7A to detect the number of the inserted photosensitive materials 2.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention makes it possible to visually detect the number of sheet materials (film, photographic paper, etc.) inserted into a box in which no sheet material (film, photographic paper, etc.) has been inserted. The present invention relates to a device for detecting the number of inserted photosensitive materials.

In conventional technical newspaper facsimile machines, CTS Pro-Tutter, etc. (hereinafter referred to as exposure machines), a box with a light-shielding structure into which a large number of sheets of light-sensitive material are inserted is used to supply the light-sensitive material. After this box is set in a predetermined position in the exposure machine, the photosensitive material inside can be taken out by opening the lid on one end. The photosensitive materials are taken out one by one and used.

Problems to be Solved by the Invention However, conventional boxes are not equipped with any means for detecting the number of sheets of photosensitive material housed inside. There was a problem in that it was extremely difficult to determine the number of remaining photosensitive materials inside the photosensitive material after the number of sheets of photosensitive material 4 was consumed by exposure equipment.

On the other hand, in ordinary military aircraft, a light source and a light-receiving element are arranged with a sheet of recording paper supported so that it can be fed out sandwiched between them.
There is a recording paper presence/absence detection device that can detect the presence or absence of the recording paper by using a light-receiving element to detect the decrease in the number of recording paper due to the consumption of the recording paper. It is difficult to think of a solution to the above-mentioned problems by applying stiffness to the above-described photosensitive material insertion box, but in that case the following problems would arise. In other words, since the light source irradiates the photosensitive material, the photosensitive material becomes photosensitive. Even if the light intensity of the light source is reduced and the sensitivity of the photodetector is increased, a photosensitive material with high sensitivity such as Arp-1000 will not be photosensitive. Resulting in. Furthermore, it is difficult to mount the light source and the light receiving element in a narrow box, and furthermore, electrical wiring is required, which makes it complicated. Furthermore, it is only possible to determine whether the light receiving element is on or off, that is, whether there is a photosensitive material or not, and it is not possible to detect the number of sheets of photosensitive material remaining in the box.

The present invention has been made in view of the above-mentioned problems, and provides a device for detecting the number of inserted photosensitive materials, which can detect the number of sheet-like photosensitive materials in a light-shielded box without exposing them to light. The purpose is to

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention attaches a gauge body having a hole penetrating into the box to the outer surface of a box into which a sheet-like sensitive material is inserted, and this gauge body Inside,
A gauge shaft is held so as to be movable almost at right angles to the photosensitive material inside the box, and this gauge shaft takes out the change in height that is determined by the consumption of the photosensitive material inserted inside the box and measures it. In order to make the position of the gauge shaft relative to the gauge body visually visible, the gauge shaft is provided with a gauge head.

According to the present invention, with the above-described configuration, the gauge shaft held in the gauge body can be moved to bring its tip into contact with the sensitive material in the box, and at this time, the gauge shaft can be moved depending on the amount of sensitive material remaining inside the box. Since the position of the gauge shaft relative to the gauge body changes, the position can be determined by checking the gauge head, and by knowing the height of the photosensitive material from the inside bottom of the box and considering the thickness of one sheet of photosensitive material. , it is possible to detect the number of photosensitive materials inside the box.

At this time, the light-sensitive material inside can be prevented from being exposed to light by blocking light by the gauge body, gauge shaft, and gauge head.

EXAMPLES The present invention will be described in detail below. Fig. 1 is a sectional view showing an embodiment of the present invention, with a part of the side view shown, Fig. 2 is a top view of the embodiment, and Figs. 3A, 3B, and 3C are respectively It is a side view seen from a different direction. In the figure, 1 is a light-shielded box that accommodates a photosensitive material, and 2 is a photosensitive material accommodated therein. A gauge body 3 is fixed to the outer surface of the box 1 with screws 4, and includes an outer cylindrical part 3A and an inner cylindrical part 3B, and the inner cylindrical part 3B forms a hole penetrating into the box 1. 5, insert this hole f, photosensitive material 2
The gauge shaft is movable at right angles to the gauge shaft, and its lower end is a large-diameter disc portion 6. This disk portion 6 serves as a stopper to prevent the gauge shaft 5 from slipping upward, and also serves to abut against the photosensitive material 2 when the gauge shaft 5 is pushed down. The lower surface of the disc portion 6 is slightly spherical so as not to damage the photosensitive material 2. 7 is a gauge head fixed to the upper end of the gauge shaft 5; It is movably inserted into the outer cylindrical portion 3A of the gauge body 3. A reference line 7A is provided on the outer surface of the gauge head 7 for viewing its position.

A portion of the outer cylindrical portion 3A of the gauge body 3 is cut out so that the heightwise position of the gauge head 7 therein can be visually checked, and a scale 8 is provided on the outer surface near the cutout.

Reference numeral 9 denotes a compression coil spring disposed between the lower end of the gauge body 3 and the gauge head 7, which normally pushes up the gauge head 7 and therefore pushes up the gauge shaft 5 connected to the gauge head 7. The lower end disc portion 6 is prevented from protruding into the box 1. gauge body 3,
The gauge shaft 5, gauge head 7, etc. may be made of any material such as metal or plastic, but from the viewpoint of light-shielding properties, it is preferable that the surfaces be black.

Next, a method of using the device configured as described above will be explained. Normally, the gauge shaft 5 and the gauge head 7 are connected to the first
It is maintained as shown in the figure. To detect the remaining amount of photosensitive material 2 inside the box, use K and gauge head 7 as shown in FIG.
Press down the upper part of the gauge shaft 5 with your finger, move the gauge shaft 5 downward, and abut the disc part 6 at the lower end against the uppermost surface of the photosensitive material 2.

As a result, the gauge head 7 stops at a height position corresponding to the remaining amount of the internal photosensitive material 2, so by reading the height position using the reference line 7A and the scale 8, the number of inserted photosensitive materials inside the gauge head 7 is determined. can be detected. After the number of inserted photosensitive materials has been detected, by releasing the finger pressing the gauge head 7, the gauge shaft 5 and the gauge head 7 return to their original positions shown in FIG.

Note that in the above structure, gaps for movement are not formed between the outer cylinder part 3A of the gauge body 3 and the gauge head 7 and between the inner cylinder part 3B of the gauge body 3 and the gauge shaft 5. Since the position of this gap is shifted, there is a low possibility that light entering from the gap between the outer cylinder part 3A and the gauge head 7 will enter the box through the gap between the inner cylinder part 3B and the gauge shaft 5. , the purpose of shading is also achieved.

In the above embodiment, the compression coil spring 9 is provided to normally push the gauge shaft 5 and the gauge head 7 upward, but the compression coil spring 9 is omitted and the gauge shaft 5 is pushed up by other suitable means. The gauge shaft 5 may be kept in the raised position, or it may be configured such that the gauge shaft 5 is constantly in contact with the sensitive material inside due to its own weight.

Further, in the above embodiment, the gauge head 7 manufactured as a separate component is attached to the upper end of the gauge shaft 5, but the gauge head 7 may be manufactured as an integral structure with the gauge shaft 5.

Effects of the Invention As is clear from the above description, the present invention provides a gauge body having a hole penetrating into the box attached to the outer surface of a box into which a sheet-like sensitive material is inserted, and a gauge shaft inserted into the gauge body. Since this device is equipped with a gauge head that allows the gauge shaft to be held movably at almost right angles to the photosensitive material inside the box, and also allows the position of the gauge shaft relative to the gauge body to be visually checked, the aforementioned 1.
Move the gauge shaft so that its tip touches the photosensitive material inside the box, visually check the position of the gauge shaft at that time using the gauge head, find out the height of the photosensitive material from the inside bottom of the box, and determine the thickness of one photosensitive material. By considering the
This has the effect of being able to detect the number of photosensitive materials inside the box.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment of the present invention, partially viewed from a different direction, and FIG. 4 is similar to FIG. FIG. DESCRIPTION OF SYMBOLS 1... Box, 2... Sensitive material, 3... Gauge body, 3A... Outer cylinder part, 3B... Inner cylinder part, 5... Gauge shaft, 6... Disc part , 7... gauge head,
7A...Reference line, 8...Scale, 9...Compression coil spring. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
--Box 3β-Inner curve S-1-Gain shaft Fig. 2C

Claims (1)

[Claims] A gauge body that is attached to the outside surface of a box into which a sheet of photosensitive material is inserted and has a hole that penetrates into the box, and a gauge that is held in this gauge body so that it can move approximately at right angles to the photosensitive material in the box. A device for detecting the number of inserted photosensitive materials, which includes a shaft and a gauge head that is provided on the gauge shaft and whose position relative to the gauge body can be visually checked.