JPS6022154A - Protecting device of electrophotographic slide picture - Google Patents

Abstract

PURPOSE:To prevent effectively peeling of a toner and distortion of a picture by sticking a thermally adhesive film to an electrophotographic slide film where an image is formed. CONSTITUTION:A heating heater base 7 is heated by a heater 8. The base has a step part (d). When a slide 50 is inserted onto the base 7, it is fitted to the step part (d) of the base 7, and the overall surface of a transparent base 3 consisting of a polyethylene terephthalate or the like is brought into contact with the step part (d). A pressurizing rubber 9 consists of heat resisting materials such as silicone or the like and is provided on an attaching base 10. The base 10 is provided above the base 7 so that it can rise and fall freely. A slide 50 consisting of a frame body 1 having a film 2 is inserted onto the base 7 against springs 24 and 25 in the direction of an arrow and is engaged with the step part (d). A thermally adhesive film 6 is put on the film 2, and they are heated on the base 7 and are pressed by the pressurizing rubber 9 having a projecting surface, thus adhering them thermally to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electrophotographic slide image protection device for protecting an electrophotographic image formed on an electrophotographic slide film made of an organic optical semiconductor.

Conventional configuration and its problems As is well known, it is a method of electrophotographic image formation.

There are products that use organic photoconductors as photoreceptors to form images by physical and electrical means, such as charging and exposure.

Each development process forms a visible image on the photoreceptor.

However, since the toner that adheres to the photoreceptor during development is bonded by Coulomb attraction, the toner is easily removed by friction or the like and the image is destroyed. For this reason, in practical use, it is necessary to sufficiently fix (fix) the developed toner on the photoconductor, and methods for this include pressurization, heating, and organic solvent vapor such as methylene chloride. A fixing method has been used in which a part of the photoreceptor is melted by bringing it into contact with the body surface, thereby adhering it to the toner.

However, in the fixing method described above, the toner adheres to the photoreceptor in an open state to the outside, and it is not possible to completely prevent the toner from peeling off, and the toner is removed by strong friction etc., resulting in poor image quality. causes a decline. Particularly in images with a large area of toner adhesion, the image quality is significantly impaired.

OBJECTS OF THE INVENTION The present invention eliminates such conventional drawbacks and provides an electrophotographic slide image protection device that can effectively prevent peeling of toner attached to a photoreceptor and distortion of images. The purpose is to

Structure of the Invention The present invention protects an electrophotographic slide image by pasting a thermal adhesive film onto an image-formed electrophotographic slide film. A heating and pressing part is formed by a pressure comb having a curvature on the surface attached to a mounting base, and a thermal adhesive film is positioned on the surface of the heater base by the heater base and the pressurizing rubber. It is designed to adhere a photoreceptor film, and by providing a curvature on the pressurized rubber surface, the thermal adhesive film can be firmly attached to the image-formed electrophotographic slide film without air bubbles.
This can prevent the toner from peeling off the photoreceptor and the image from deteriorating.

Description of examples The present invention will be explained below based on the illustrated embodiments.

FIGS. 1 and 2 show an electrophotographic slide (hereinafter referred to as ESO) in which a photoreceptor film 2 is attached to the aperture part of a slide frame 1 made of paper or a suitable synthetic resin used in the present invention.
slide frame 1 and photoreceptor film 2
Step part a between.

b is formed. 3 is a transparent base such as polyethylene terephthalate, 4 is a conductive layer, and 6 is a photosensitive layer.

FIG. 3 shows a thermal adhesive film 6 attached to the imaged photosensitive layer side of the photosensitive film 2 of the slide 60. As shown in FIG. The thermal adhesive film 6 is a film that adheres by applying pressure and temperature above a certain level, and is made of a transparent film such as polyester as a paste and coated with an adhesive such as polyethylene on the back side (0 side). Does not melt and bond at room temperature, 10
Since it melts and becomes transparent at a high temperature of around 0°C, it is easy to handle at room temperature.

FIG. 4 is a sectional view showing a state in which the thermal adhesive film 6 is pasted onto the surface of the photoreceptor film 2 of the slide 50. The thermal adhesive film 6 has approximately the same size and shape as the aperture. In this embodiment, a case will be described in which a thermal adhesive film that has been cut into the above-mentioned dimensions and shape is used, but it may also be pasted in the form of a roll film and then cut into the above-mentioned dimensions and shape.

FIG. 6 shows a circuit block diagram of an embodiment of the present invention, 18
is the preheating control means 26. First timer 27. A control section includes a second timer 28, a slide detection section 20 includes a microswitch, and a drive section 17 (hereinafter referred to as a solenoid 7 in this embodiment).

FIG. 6 is a detailed sectional view of the heating and pressurizing section used in the present invention.
is a heater stand heated by a heater 8 made of a positive temperature dependent resistance element or the like, and when the slide 50 is inserted onto the surface of the heater stand 7, it fits into the stepped portion;
It also has a stepped portion d that is in contact with the entire surface of the photoreceptor film. Reference numeral 9 denotes a pressurized rubber made of a heat-resistant material such as silicone, which is located above the heater stand 7 and is attached to a mounting stand 10 that can be raised and lowered and has a flat bottom surface, and is opposed to the heater stand 7. The surface has a convex curvature 9 and the opposite surface has a concave curvature of the same degree. Reference numeral 22 denotes a release spring for releasing the fitting of the stepped portion d as the mounting base 1o rises after completion of pasting, 23 a spring biased in the opposite direction to the insertion of the slide 5o, and 24 the slide 60. When the slide frame 1 is inserted onto the surface of the heater stand 70, the slide frame 1 is inserted into the heater stand step part d as if it were a seedling stand.
A spring 25 for pressing the step d is positioned slightly above the upper surface of the step d so that the end of the slide frame 1 does not get caught in the step d when the slide 50 is inserted. This is a guide spring attached to the front.

FIG. 7 is an overall view of an embodiment of the present invention, in which a mounting base 10 is connected to an arm 11 through a shaft 12, and the arm 11 is connected to a lever 13 through a shaft 14, and the lever 11 is connected to a lever 13 through a shaft 14. 13 is rotatably held on a support shaft 15. That is, arm 11. Shaft 14, lever 13. The support shaft 15 forms a toggle mechanism. The lever 13 is connected to a solenoid 17 via a spring 16, and the operation of the solenoid 17 operates the toggle mechanism. 18 is the control section, and 19 is a return spring. Figures 8 and 9.

FIGS. 10 and 11 are detailed cross-sectional views showing the operation of the heating and pressing section in the embodiment of the present invention.

The operation of the embodiment of the present invention constructed as described above will be explained with reference to the drawings of FIGS. 6 to 11.

When the power is turned on, the preheating control means 26 and the heater 8 are energized. When the slide 60 with the thermal adhesive film 6 placed on the surface of the photoreceptor film 2 on which the image is formed on the surface of the heated heater stand 7 is inserted, the slide detection portion is exposed as shown in FIG. By pressing the upper surface of the slide frame 1 of the slide 6o with the spring 24 against the stepped portion d of the heater stand, the entire surface of the photoreceptor film 2 is fitted and held in contact with the upper surface of the stepped portion d.

At this time, the slide detector 20 is turned on via the spring 23 pressed by the end of the slide frame 1, and the first
The timer 27 is activated, and after the set time has elapsed, the second timer 28 linked to the first timer 27 activates the solenoid 17 shown in FIG. 7, and the pressurized rubber 9 is attached by the toggle mechanism. The mounting base 10 is lowered,
The pressure rubber 9 presses the thermal adhesive film 6 and the photoreceptor film 2 located in the aperture portion of the slide 50.

Although FIG. 9 shows the state in which pressure is applied, the heater stand 7 is provided with a step d that fits into the slide step 7, so that the entire surface of the photoreceptor film 2 is on the surface of the heater stand 7. The photoreceptor film 2 can be reliably adhered and heated uniformly over the entire surface of the photoreceptor film 2, and the photoreceptor film 2 can be prevented from warping when pressurized by the pressure rubber 9.

Furthermore, since the slide 6o can be regulated to a fixed position on the heater stand 7 by the stepped portion d, alignment with the pressurizing rubber 9 is facilitated, and the pressurizing rubber 9 is attached to the thermal adhesive film 6 in the aperture of the slide 50. The photoreceptor film 2 can be pressed accurately to ensure reliable attachment.

Next, when the solenoid 17 is activated for a certain period of time by the second timer 28 shown in FIG. 5 and then deactivated, the mounting base 1o is raised by the return spring 19 shown in FIG. 7, and the pasting is completed. do.

The slide that has been pasted is placed on the mounting base 10 when pressurized as shown in Figure 9.
When the release spring 22 fixed to the slide frame 1 is locked to the end of the slide frame 1, and the operation of the solenoid 17 is released and the mounting base 10 is raised, the release spring 22 is fixed as shown in FIG.
When the slide frame 1 is pulled up and the stepped portion d of the slide is disengaged from the stepped portion d of the heater stand, the slide frame 1 is pushed out by the spring 23 as shown in FIG. 11.

It will be done.

Next, the pressurized rubber 9 having a curvature on the surface used in the present invention
I will explain in detail. FIGS. 12 and 13 show the operation of the pressure rubber 9o in which the pressure side surface shape of the pressure rubber 9 is flat. If the surface shape of the pressurized rubber 8 is made flat, the 13th
As shown in the figure, when contacting the thermal adhesive film 6 and starting to apply pressure, the mounting base 10. Slight inclination of heater stand 7, etc.
Due to the flatness of the surface of the pressurizing rubber 90, the warping of the thermal adhesive film, etc., the position of the thermal adhesive film 6 and the photoreceptor film 2 cannot be determined, and the pressure may be applied such that the peripheral area contacts first than the central area. As a result, the air in the central part may not be sufficiently vented, and as shown in FIG. 14, air may remain between the thermal adhesive film 6 and the photoreceptor film 2, preventing complete attachment. , which appears as a blotchy image defect during projection. Further, when the area is pressed with a finger or the like, the friction between the thermal adhesive film 6 and the photoreceptor film 2 may cause the toner on the surface of the photoreceptor film to peel off, resulting in two image defects.

FIG. 16 is an external view showing an example of the pressurized rubber 9 that can be used in the present invention, and the surface facing the heater stand 7 has a convex curvature 9 with the central part of the pressurized rubber as the apex and the opposite side toward the periphery. The surface is provided with a concave curvature of the same degree.

The pressurizing operation when using the above-mentioned pressurizing rubber is shown in the 16th to
This will be explained with reference to FIG. As described above, when the slide 6o is inserted onto the surface of the heater stand 70 as shown in FIG. 16 by the operation of the solenoid 17 shown in FIG.

The mounting base 1o having a round bottom surface descends, and the pressure rubber 9 begins to come into contact with the thermal adhesive film 6 as shown in FIG. 17. However, since the pressure rubber 9 has a curvature on its surface, The center light of the pressurized rubber 9 comes into contact with the center of the thermal adhesive film 6, and it begins to adhere to the photoreceptor film 2. Then, mount 1
As the pressure rubber 9 comes into contact with the thermal adhesive film 6 as shown in FIG. As shown in the figure, the contact portion of the pressurized rubber 9 with the thermal adhesive film 6 becomes completely flat, and the entire surface of the thermal adhesive film 6 and the photoreceptor film are pasted.

As described above, since the thermal adhesive film 6 is attached to the photoreceptor film 2 sequentially from the center toward the periphery, the air between the thermal adhesive film 6 and the photoreceptor film 20 can be easily removed from the center toward the periphery. It is possible to stick the heat-adhesive film securely, instead of moving and sticking with air remaining as shown in Fig. Compared to the method of applying pressure rubber and pasting it sequentially from the periphery of the aperture, there is less misalignment between the thermal adhesive film and the photoreceptor film, and less variation in the amount of elongation of the thermal adhesive film due to heating and pressure.

The curvature provided on the pressure rubber 9 is such that when the center of the pressure rubber comes into contact with the thermal adhesive film, the gap between the peripheral area of the pressure rubber and the photoreceptor film is determined by the warpage of the thermal adhesive film, the inclination of the heater stand and the receiving stand. It is sufficient if the curvature is such that it can absorb the following. In this example, the slide aperture dimension is 25 am.
Although the description is based on the case where a rubber with a width of 36 mm is used, experiments have shown that the pressurized rubber has an R100 mm (the gap amount is approximately 0.0 mm) to R50- (the gap amount is approximately 1 mm).
, 5mm ), and when pressed with a force of 20 Ky, good adhesion was obtained.0 As mentioned above, in this example, a slide aperture size of 25 x 36 + mnO was used, but a slide aperture size of different size was used. Also, the gap between the peripheral part of the pressurized rubber and the film when the central part of the pressurized rubber contacts the film may be set to the approximate value described above. Although this embodiment describes a case in which the pressurized rubber has a curvature in the lateral direction, it may also have a curvature in the longitudinal direction, or it may have a spherical surface.

Effects of the Invention As described above, the present invention provides a heating heater stand and a heating heater stand when pasting a thermal adhesive film onto an image-formed electrophotographic slide film to prevent toner from peeling off on a photoreceptor and image distortion. A heating and pressurizing part is formed with a pressurizing rubber having a curvature on the surface attached to a mounting base that is located on the top of the mount and is movable up and down. It has great industrial value, such as being able to reliably bond the photoreceptor film to the heat-adhesive film located on the surface of the slide, improving slide handling and storage stability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an electrophotographic slide, Fig. 2 is a cross-sectional view thereof, Fig. 3 is a perspective view of a thermal adhesive film and an electrophotographic slide, and Fig. 4 is a state in which the thermal adhesive film is attached to a photoreceptor film. 5 is a circuit block diagram of an embodiment of the present invention, FIG. 6 is a sectional view of a heating and pressurizing section in an embodiment of the present invention, and FIG. 7 is a sectional view of an embodiment of the present invention. 8, 9, 1o and 11 are cross-sectional views showing the operation of the heating and pressing section in the embodiment of the present invention, and FIGS. 12 and 13 show that the surface shape of the pressurizing rubber is flat. Fig. 14 is a plan view of the slide when a thermal adhesive film is attached using pressurized rubber with a flat surface;
FIG. 15 is a perspective view of an example of the pressurized rubber used in the present invention;
Figures 16 and 17. FIGS. 18 and 19 are cross-sectional views showing the pressurizing operation of the embodiment of the present invention. 1...Slide frame, 2...Photoreceptor film, 6...Thermoadhesive film, 7...
Heater stand, 9... Pressure rubber, 10...
...Mounting base, 21...Mounting base sliding shaft, 50...
...electronic photo slide 0 Figure 1 bυ Figure 3 Figure 4 Figure 5 Figure 7, Figure 8 Figure 9 Figure 10 Factor 11 Figure 12 Figure 14

Claims (1)

[Claims] A heater stand of a device for pressure bonding a thermal adhesive film to the film surface of a film mounted on a slide frame and a mounting stand located above the heater stand, which can be raised and lowered freely, and have a curvature on the surface. A heating and pressing part is formed by a pressurizing rubber having a heating element, and the heating heater stand and the pressurizing rubber are configured to bond a photoreceptor film to a thermal adhesive film located on the surface of the heating heater stand. An electronic photographic slide image protection device characterized by: