JPS6033553A - Electrophotographic slide image protecting device - Google Patents

Abstract

PURPOSE:To stick a heat-adhesive film securely and prevent the separation of toner and the deformation of an image by operating a heating and pressing part for the heat-adhesive film through a prescribed timer, and controlling the temperature and pressure application time. CONSTITUTION:A control part 18 is provided with the heating and pressing means consisting of a preheating control means 26, the 1st and the 2nd timers 27 and 28, a detecting means 20, heater base 7, and pressing rubber 9. When a slide 50 mounting the heat-adhesive film 6 is inserted, it is detected by the detecting means 20, and when the temperature is higher than necessary temperature, the 1st timer 27 operates and the 2nd timer 28 also operates a prescribed time later to lower the press rubber 9 for pressure application and release it a prescribed time later. Thus, the temperature and pressure application time are controlled, so tha heat-adhesive film 6 is stuck to a photosensitive film securely to prevent the toner separation and image deformation.

Description

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

Conventional Structures and Problems As is well known, one method of electrophotographic image formation involves forming images using physical and electrical means using an organic photoconductor as a photoreceptor, including charging and exposure.

Each development process forms a visible image on the photoreceptor.

However, since the toner adhering to the photoreceptor during development is adhered by Coulomb attraction, the toner is easily removed by friction or the like and the image is destroyed. In practical use, the developed toner on the photoreceptor must be sufficiently fixed (
This can be accomplished by applying pressure, heating, or by bringing organic solvent vapor such as methylene chloride into contact with the surface of the developed photoreceptor. Fixing methods have been used, such as adhesion to. However, in the fixing method described above, the toner adheres to the electrosensitive body in an open state to the outside, and it is not possible to completely prevent the toner from peeling off, but the toner may be removed due to strong friction, etc. This will result in a decrease in image quality.

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 prevents peeling of toner adhering to a photoreceptor and distortion of images.

Structure of the Invention The present invention is an electrophotographic slide image protection device that applies a thermal adhesive film under pressure onto an electronic four-page slide film on which an image has been formed to prevent toner from peeling off on a photoreceptor and image distortion. a heating and preheating control means for the heater stand; a detection means for detecting a slide inserted into the heater stand; and a first timer linked to a signal from the detection means;
It has a second timer interlocked with the signal of the first timer, and is configured so that the pressure is applied and released by a drive section operated by the second timer, or the preheating control means is operated. By configuring the operation of the first timer and the second timer to be disabled, the temperature of the heater base is always maintained at a constant level or higher during pressure bonding, and the fixed position of the heater base is maintained. After a certain period of time has elapsed after the slide is inserted into the slide, pressure starts to be applied, and by controlling the necessary pressure time, it is possible to always adhere the thermal adhesive film uniformly and reliably.

DESCRIPTION OF EMBODIMENTS The present invention will be described below with reference to embodiments and drawings. Figures 1 and 2 show an electrophotographic slide 6o (hereinafter referred to as slide) in which a photoreceptor film 2 is attached to the slide aperture portion of a slide frame 1 made of paper stock or a suitable synthetic resin used in the present invention. , stepped portions a and b are formed between the slide frame 1 and the photoreceptor film 2. 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 that is pasted on the image-formed photosensitive layer side of the photosensitive film 2 of the slide 50. As shown in FIG. The thermal adhesive film 6 is a film that adheres by applying pressure and a temperature above a certain level, and is based on a transparent film such as polyester and coated with an adhesive such as polyethylene on the back side (zero side). does not melt and adhere at room temperature, but melts and becomes transparent at a high temperature of around 100'C, making it easy to handle at room temperature.

FIG. 4 is a sectional view showing a state in which the thermal adhesive film 6 is pasted on the surface of the photosensitive monolithic film 2 of the slide 6o. The thermal adhesive film 6 has approximately the same size and shape as the aperture.

FIG. 5 shows a circuit block diagram of an embodiment of the present invention, 1
8 is a preheating control means 26. First timer 27. Second
A control section including a timer 28, 2o is a detection means consisting of a microswitch etc. for detecting the presence or absence of a slide (hereinafter referred to as microswitch 2o in this embodiment);
17 is a drive section (hereinafter referred to as solenoid 17 in this embodiment).

FIG. 6 is a detailed sectional view of the heating and pressing part used in the present invention.
7 is a heater 8 consisting of a positive temperature dependent resistance element, etc.
) has a stepped portion d which fits into the stepped portion when the slide 5o is inserted flush with the heater metal in the heater stand heated by ) and is in contact with the entire surface of the photoreceptor film. ing. Reference numeral 9 denotes a heat-retaining F1 rubber made of a heat-reducing material such as silicone, which is placed on the upper part of the heater stand 7 and has a flat bottom surface that can be freely lowered. A convex curvature on the surface facing the heater stand 7,
3, 2 which has a gate curvature of 11 degrees on the opposite surface
Reference numeral 2 denotes a release spring for releasing the fitting of the stepped portion d as the upper back of the mounting base 10 moves after pasting is completed, 23 a spring biased in the opposite direction to the insertion of the slide 5o, and 24 a release spring for the slide 50. is inserted flush with the heater stand 7,
A spring 25 presses the slide frame 1 so that the slide step part fits into the heater stand step part d, and a spring 25 presses the slide frame 1 so that the end of the slide frame 1 does not catch on the step part d when the slide 5o is inserted. The guide spring is installed forward of the stepped portion d in the slide insertion direction so as to be located slightly downward from the upper surface of the portion d.

FIG. 7 is an overall view of the device using the present invention, with mounting base 1
The arm 11 is connected to a lever 13 via a shaft 14, and the lever 13 is rotatably held by a support shaft 15.

1.11゜Ill 14 Lebar 13. The support shaft 15 forms a toggle mechanism. 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 return springs.

FIG. 8, FIG. 9, FIG. 10, and FIG. 11 are detailed 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 FIGS. 6 to 11.

As shown in FIG. 6, the thermal adhesive film 6 is placed on the surface of the photoreceptor film 2 on which an image is formed flush with the heater stand 7, which is heated by the heater 8 that is linked to the preheating control means 26. When the slide 50 is inserted, the spring 24 pushes the slide frame 1 of the slide 50 onto the step d of the heater stand, as shown in FIG.
When the entire surface of the photoreceptor film 2 comes into contact with the upper surface of the stepped portion d by pressing the upper surface and is particularly fitted and held, the cutout 23 pressed by the end of the front part 14 slide frame 1
The microswitch 2o is turned on via the microswitch 2o, the first timer 27 of the control unit 18 shown in FIG.
The timer 28 is activated 1-2, the solenoid 17 shown in FIG.
The pressure rubber 9 presses the thermal adhesive film 6 and the photoreceptor film 2 located at the aperture and the a portion of the slide 6o.

In the present invention, the operation of the first timer 27 and the second timer 28 is disabled during the operation of the preheating control means 26, so that the temperature of 7111'1 degree of the heater stand 7 is If the temperature of the adhesive film does not exceed 4111 degrees, which is necessary for pressure bonding of the adhesive film 6, the operation of the preheating control means 26 will not turn off and the first
Timer 27. The second timer 28 does not operate and no pressurizing operation is performed.

Although FIG. 9 shows the state in which pressure is applied, the heater stand 7 is provided with a step part d that fits into the slide step part 7, so that the entire surface of the photoreceptor film 2 is on the surface of the heater stand 7. The pressure rubber 9
It is possible to prevent the photoreceptor film 2 from warping during pressurization due to □.

Next, after the solenoid 17 is operated for a certain period of time by the second timer 28 shown in FIG. 6, when the operation is released, the mounting base 17 is
is the upper layer and pasting is completed. The slide that has been pasted is attached to the release spring 2 fixed to the mounting base 10 when pressurized as shown in FIG.
2 is connected to the end of the slide frame 1 11-1. After applying pressure for a certain period of time as described above, the operation of the solenoid 17 is released, and when the mounting base 10 is lifted up, it is released as shown in Fig. 10)
When the slide frame 1 is pulled up by the screws 10' 22 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.

FIG. 12 is a circuit diagram of a device using the present invention. 29
Reference numeral 30 indicates an indicator lamp indicating that the preheating control means 26 is in operation, 30 indicates a lamp indicating that the preheating control means is off, and 31 indicates an operation lamp indicating that the first timer 27 and the second timer 28 are operating.

For thermal adhesive film, applying a load of more than a certain amount for a certain period of time at a temperature above a certain level is a condition for complete adhesion; if the temperature is too low or the load is too small, the adhesive will melt. It becomes incomplete, and even if the pressure is applied for a long time, the adhesion becomes uneven. Further, even if the temperature and load are sufficient, if the pressing time is too short, the adhesion will be uneven as described above, and if the pressing time is too long, the film will deform, etc., which is inconvenient. The operation of this device is linked to the preheating control means, and when the slide is inserted into the heated heater stand, the slide detection means is activated, and the 11-1 timer linked to the slide detection means is set. After the timer is activated, a second timer linked to the first timer is activated to operate the solenoid for a set time and pressurize the thermal adhesive film by a pressure unit connected to the solenoid. Since the operation of the first and second timers is disabled while the control means is in operation, the pressurizing operation is performed until the heater stand reaches a temperature necessary to melt the adhesive of the thermal adhesive film. In addition, when the temperature of the heater stand reaches a certain level, the first and second timers operate to cause the pressurizing section to perform a pressurizing operation for a set time. Since the pressurizing operation is not performed for the set time due to the operation of the timer 1, the operator has enough time to reliably insert the slide into the fixed position of the heater stand.

As mentioned above, it is possible to control the degree of shrinkage and pressurization time necessary for pasting the thermal adhesive film, and it is also possible for the operator to set the required operation time. Note that time control, temperature detection control, etc. can be used as the preheating control means.

Effects of the Invention As described above, the present invention provides a backup heater stand when pasting a thermal adhesive film onto an image-formed electrophotographic slide film to prevent toner from peeling off on the photoreceptor and image distortion. It has a heating control means, a detection means for detecting the heater stand and the inserted slide, and first and second timers linked to signals from the detection means, and is operated by the second timer. By configuring the driving unit to pressurize and release the pressure, and by configuring the operation of the first timer and second timer to be disabled while the preheating control means is in operation, the necessary time during pressure bonding is achieved. By keeping the temperature of the heater stand always above a certain level, by starting pressurization after a sufficient time for the operator to insert the slide into the fixed position of the heater stand, and by controlling the required pressurization time, It is capable of uniformly and reliably attaching a thermal adhesive film to a photoreceptor film, and has great industrial value.

3

[Brief explanation of drawings]

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. FIG. 5 is a circuit block diagram of an embodiment of the present invention, FIG. 6 is a sectional view of the heating and pressurizing section of the embodiment, and FIG. 7 is an overall diagram of the embodiment of the present invention. cross section,
Figure 8. FIGS. 9, 10, and 11 are cross-sectional views showing the operation of the heating and pressing section in the embodiment of the present invention, and FIG. 12 is a circuit diagram of the embodiment of the present invention. 1...Slide frame, 2...Photoreceptor film, 6...Thermoadhesive film, 7...
Heater stand, 9... Pressure rubber, 1o...
・Mounting base, 17... Drive unit, 18...
Control unit, 2o...Detection means, 21...-...
Mounting base sliding shaft, 26... Preheating control means, 2
7...First timer, 28...Second timer
Timer, 60...electronic photo slide. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Zuka 2 Figure 3 Figure 4 Collection 6 Figure 8 Figure 9 Figure 10 Figure 11

Claims (2)

[Claims] (1) Preheating control means for a heater stand of a device that pressure-bonds a thermal adhesive film to the film surface of a film mounted on a slide frame, and a detection means for detecting a slide inserted into the heater stand; It has a first timer that is linked to a signal from the detection means and a second timer that is linked to a signal from the first timer, and pressurization and release is performed by a drive unit that is operated by the second timer. An electronic photographic slide image protection device characterized by being configured as follows. (2) The electrophotographic slide image protection device according to claim (1), further comprising a control means for disabling the operation of the first and second timers while the preheating control means is in operation. .