JPH0331947Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a thermal copying machine in which a safety wire mesh is provided between a flexible thin film that transmits or absorbs infrared rays and a light source that irradiates light including infrared rays. .

Prior Art In a thermal copying machine that uses a flexible thin film that transmits or absorbs infrared rays on which a thermal recording material is placed,
In order to prevent the user's hands or copies from directly touching the light source in the event that the flexible thin film is torn or cracked due to external action, there is a space between the flexible thin film and the light source. A wire fence is provided for safety.

However, in this thermal copying machine, the wire mesh support frame is used alone and is in contact with the reflecting mirror, so the reflectance of the support frame portion decreases and the light irradiated onto the flexible thin film varies. A uniform image could not be obtained.

Purpose This invention was made to eliminate the above-mentioned drawbacks, and its purpose is to create a recess on the inner surface between the flexible thin film and the light source, leaving one or two pairs of opposing end portions. By providing a wire mesh with one or two pairs of end portions of the wire mesh close to each other on the back side of the frame covered with the flexible thin film, manufacturing of the support frame for the wire mesh is simplified and costs are reduced. Another object of the present invention is to provide a heat-sensitive copying machine that can irradiate a heat-sensitive recording material with uniform light through a flexible thin film and obtain images of good quality.

Configuration The configuration of the present invention will be described below based on one embodiment.

Figures 1 to 7 are diagrams for explaining the process of bonding the flexible thin film of a thermal copying machine and the wire gauze provided below it.First, as shown in Figure 1, , a press plate 2 having a protrusion 3 for making a recess in the wire mesh 1 and a cutter 4 for cutting the periphery of the wire mesh 1; a cutter receiver having a recess 5 into which the protrusion 3 is inserted and receiving the cutter 4; As shown in FIG. 2, the wire mesh 1 is placed on the press pedestal 7, and the press plate 2 is placed so that the cutter 4 and the cutter holder 6 are aligned. Press the protrusion 3 into the recess 5 of the press pedestal 7.
Insert it into the At this time, the wire mesh 1 is pushed by the projections 3 of the press plate 2 and sinks along the depressions 5. When the wire mesh has finished sinking, the wire mesh 1 is cut to the standard size by the cutter 4 and the cutter receiver 6, so when the press plate 2 is raised as shown in FIG. A processed wire mesh product 8 that has edges 8a, 8b and a step, and a recessed central portion 8c, and is finished to specified dimensions with a cutter 4 and a cutter receiver 6.
is completed.

Next, the wire mesh workpiece 8 is bonded to a metal support frame 10 to which a flexible thin film 9 is bonded, as shown in FIG. By applying tension to the flexible thin film 9 and bonding the glass fiber woven fabric surface to the metal support frame 10 using a room-temperature curing epoxy resin, the flexible thin film 9 is heat-sensitive without slipping. Can be easily installed on a copy machine. On the opposite side of the metal support frame 10 to which this flexible thin film 9 was adhered,
Apply Adhesive 11, which is a mixture of Araldite AV138 and Hardener HW998 (product name of Nippon Ciba Geigy Co., Ltd.) at a ratio of 100:40. Then, as shown in FIG. 5, the metal support frame 10 coated with the adhesive 11 and the wire mesh workpiece 8 are pressed together using a press plate 12 and a press pedestal 13. The crimping time at this time is 10 minutes when the temperature is 80℃, and 24 minutes when the temperature is room temperature.
In time, the wire mesh support frame 10 and the wire mesh workpiece 8 are bonded together.

After a predetermined period of time has elapsed, as shown in FIG. 6, when the press plate 12 and press pedestal 13 are separated,
As shown in FIG. 7, a flexible thin film with wire mesh 14 can be constructed in which the wire mesh workpiece 8 and the flexible thin film 9 are integrated on the metal support frame 10.

FIG. 8 shows a cross-sectional view of a thermal copying machine of the present invention incorporating a flexible thin film 14 with a wire mesh. 17 is installed. A flexible thin film 14 with wire gauze is attached to the upper part of this reflecting mirror 16 with the flexible thin film 9 facing upward. Then, a heat-sensitive recording material 18 is placed on this flexible thin film 9, and a housing 15 is formed.
By closing the press plate 20 rotatably provided with the rotation member 19 at the upper end, the press plate 20
Pressure material 21 provided on the bottom surface of heat-sensitive recording material 18
is closely attached to the flexible thin film 9.

In this embodiment, a metal support frame 10 for a wire mesh processed product 8 is used.
Since it is attached to the upper part of the housing 15, there is an advantage that the metal support frame 10 does not cast a shadow and the light from the lamp 17 is uniformly irradiated onto the heat-sensitive recording material 18 through the flexible thin film 9.

Note that if the wire mesh workpiece 8 is not too recessed, a wire mesh pattern will appear on the screen, so it is desirable to leave an interval of 5 mm or more.

In the description of the process of the above embodiment, the flexible thin film 9
wire mesh workpiece 8 on one metal support frame 10 that supports
However, as a means for bringing the end face of the wire mesh workpiece 8 and the metal support frame 10 that supports the flexible thin film 9 close to each other, this embodiment is not the only method. It is also possible to screw the end face of the wire mesh workpiece 8 and then place the metal support frame 10 supporting the flexible thin film 9 on the casing 15.
There is no particular limitation to bonding the wire mesh workpiece 8 to the metal support frame 10. Further, in the above embodiment, the wire mesh workpiece 8 is provided with two pairs of opposing ends, but may be provided with only one pair of opposing ends.

Effects As is clear from the above explanation, the present invention provides a metal support frame supporting a flexible thin film and one or two pairs of ends of the wire mesh workpiece in close proximity to each other, thereby allowing the thin film to pass through the flexible thin film. Since the heat-sensitive recording material can be irradiated with uniform light, it is possible to obtain high-quality images, and wire mesh products can be easily processed, making it easy to manufacture wire mesh support frames and keeping costs low. There is an advantage of doing so.

[Brief explanation of the drawing]

Figures 1 to 6 are diagrams showing the process of making a flexible thin film with a wire mesh according to an embodiment of the present invention, Figure 7 is a perspective view of a flexible thin film with a wire mesh, and Figure 8 is a diagram showing a flexible thin film with a wire mesh attached. 1 is a cross-sectional view of a thermal copying machine according to an embodiment of the present invention incorporating a flexible thin film. 1...Wire mesh, 2...Press plate, 3...Protrusion,
4... cutter, 5... recess, 6... cutter receiver, 7... press pedestal, 8... wire mesh processed product, 9
... Flexible thin film, 10 ... Metal support frame, 11 ...
Adhesive, 12... Press plate, 13... Press pedestal, 14... Flexible thin film with wire mesh, 15... Housing,
16...Reflector, 17...Lamp, 18...Thermosensitive recording material, 19...Rotating member, 20...Press plate, 2
1... Pressing material.

Claims (1)

[Scope of utility model registration request] A heat-sensitive recording material is brought into close contact with a flexible thin film that transmits or absorbs infrared rays by a pressing member of a pressing plate, and the heat-sensitive recording material is irradiated with light from a light source that irradiates light including infrared rays to perform copying. In a thermal copying machine, a metal mesh workpiece with a recessed inner surface, leaving one or two pairs of opposing end portions, is placed between the flexible thin film and the light source in the frame on which the flexible thin film is stretched. A thermal copying machine characterized in that one or two pairs of end portions of the wire mesh workpiece are provided close to each other on the back surface.