JPS62297860A - Electrophotographic copying machine with laminating function - Google Patents

Abstract

PURPOSE:To set up proper speed for laminating a transparent synthetic resin film forming an adhesive layer on a print or the like and to prevent a film from modification and deformation by delaying the carrying speed of a carrying and fixing devices from the carrying speed of transfer paper obtained at the time of normal operation of a copying machine. CONSTITUTION:An electrostatic latent image corresponding to an original image is exposed to the surface of a photosensitive drum of an electrophotographic copying machine by an exposing device 11 and the latent image is developed with toner by a developing device 13. Transfer paper is carried to a carrier 20 by paper feeding and carrying rollers 24-26 and a toner image formed on the drum 10 is transferred to the carried transfer paper by a transferring/ separating device 15 and the transfer paper is separated from the drum 10. The transfer paper is heated by a fixing device 30 to fix the toner image. The carrying speed of the carrying and fixing device is delayed from the normal devices to obtain proper speed for laminating the transparent synthetic resin film on which an adhesive layer is formed on the print.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an electrophotographic copying machine, and in particular, to an electronic photocopying machine,
This invention relates to an electrophotographic copying machine capable of laminating sheets of printed matter such as cards, business cards, posters, and maps with transparent synthetic resin films.

(Prior art) Sheet-like printed materials such as identification cards, cards, business cards, posters, maps, etc. have drawbacks such as being easily wrinkled and bending, and furthermore, they tend to get dirty, scratched, etc. with use. There is a risk that it will stick, and its lifespan is very short. For this reason, recently, such sheet-like printed matter is laminated with a transparent synthetic resin film. This lamination makes the sheet-like printed matter waterproof, makes it resistant to stains and scratches, and prevents bending and wrinkles, thereby significantly improving the durability of the sheet-like printed matter.

Conventionally, lamination of sheet-like printed matter and the like with Tomei synthetic resin films has been carried out using a special lamination machine.

Lamination using a specialized laminating machine is done using a transparent synthetic resin film with a special adhesive layer formed on one side.

This is carried out by arranging a sheet-shaped printed matter or the like so that the surface on which the adhesive layer is formed is joined to the surface of the sheet-shaped printed matter or the like to be laminated, and passing the sheet-shaped printed matter through the inside of the laminating machine. This special laminating machine heats and presses the laminate that passes through it twice to adhere and laminate the sheet-like printed matter and the transparent synthetic resin film. When laminating the back side of a printed matter, etc., the transparent synthetic resin film with an adhesive layer formed thereon may be placed on the back side as well, and the film may be passed through a special lamination machine. ~ What types of printed sheets, etc. should be laminated?

It is limited to some extent depending on the purpose of use, size, etc.

Moreover, once laminated printed matter or the like has improved durability, it is not necessary to frequently laminate sheet-like printed matter or the like. Additionally, since it is a laminating machine, it cannot be used for other purposes.

Furthermore, because dedicated laminating machines are relatively expensive, they are hardly ever popular for home use and personal use, and there are very few opportunities to easily laminate printed matter for personal use. There wasn't.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and its purpose is to provide an electrophotographic copying machine that can laminate a transparent synthetic resin film on a sheet-like printed matter, etc. It is in.

(Means for solving the problem) A special laminating machine heats and presses the inserted transparent synthetic resin film on which the adhesive layer is formed and the sheet-like printed matter, melting the adhesive of the adhesive layer and bonding the two together. It is something that is attached. The inventor of the present invention has focused on the fact that an electrophotographic copying machine has a function of heating and pressurizing a sheet-like printed matter or the like.

The heat fixing device of an electrophotographic copying machine uses a heated roller to heat and melt a toner image transferred to a transfer paper while applying pressure, and fix the toner image on the transfer paper. The fixing device is usually set at a temperature of 180 to 200°C.

Normally, when laminating sheet-like printed matter etc. with a transparent synthetic resin film on which an adhesive layer is formed, the printed matter is heated to a temperature that melts the adhesive of the adhesive layer formed on the transparent synthetic resin film, and the printed matter etc. When the temperature of the fixing device and the transparent synthetic resin film are kept constant, it is necessary to transport the transparent synthetic resin film at a speed that ensures reliable adhesion. If the conveyance speed is too fast, the two will not be bonded securely, and if the conveyance speed is too slow, the adhesive layer may melt and flow out, and the synthetic resin film may shrink due to heat and become curled or wavy. .

The present invention has been made based on this knowledge.

An electrophotographic copying machine with a laminating function according to the present invention.

An exposure device that exposes a document image to form an electrostatic latent image corresponding to the document image on a photoconductor, a developing device that develops the electrostatic latent image with toner, and a conveyance device that conveys the transfer paper. , a transfer device that transfers the toner image on the photoreceptor to the transfer paper conveyed by the conveyance device, and a fixing device that heats and melts the toner image on the transfer paper and fixes it to the transfer paper while the transfer paper is being conveyed. and,
has.

The conveying device and the fixing device have a conveying speed of 9 for normal copying and a speed of 3 to 3, which is suitable for laminating sheet-like printed matter with a transparent synthetic resin film on which an adhesive layer is formed.
The conveying speed can be changed to 5 m/min, thereby achieving the above object.

(Example) Examples of the present invention will be described below.

As shown in FIG. 1, the electrophotographic copying machine of the present invention has a photosensitive drum 10 in the center of two machines.
An exposure device 11 is arranged above.

A document table 12 is provided at the top of the machine, and the document table 1
2 is movable in the direction shown by arrow A in Figure 9. A charging device 14 is disposed upstream in the rotational direction of the photosensitive drum 10 from the exposed position.

The photoreceptor drum 10 is rotatable in the direction shown by arrow B in FIG. A developing device 13 is disposed on the downstream side in the rotational direction of the photoreceptor drum from the position where the top of the photoreceptor drum 10 is exposed. moreover.

A transfer/separation device 15 is provided below the photoreceptor drum 10 . A cleaning device 16 is disposed between the transfer/separation device 15 and the charging device 14.

between the photosensitive drum 10 and the transfer/separation device 15.

A conveyance path 20 is formed for conveying the transfer paper in the forward direction of the rotation direction of the photoreceptor drum 10. The conveyance path 20 communicates within the machine from an upstream section 20a upstream of the photoreceptor drum 10 to a downstream section 20b downstream. The upstream section 2 of the conveyance path
At the upstream end of 0a, there is a paper feed cassette 21 containing transfer paper.
is installed. A manual paper feed tray 22 is provided above the paper feed cassette 21 for inserting transfer paper into the conveyance path 20 one by one.

The nuclide feed tray 22 also communicates with the upstream portion 2'Oa of the conveyance path. The upstream portion 20a of the conveyance path receives transfer paper fed from within the paper feed cassette 21 or from above the manual paper feed table 22.

Paper feed roller 24 or 25. The image is guided to the transfer/separation device 15 by a conveyance device composed of a conveyor roller 26 and a conveyor roller 26 .

A conveyance belt 23 as a conveyance device is disposed in the downstream portion 20b of the conveyance path, and a fixing device 30 is disposed at the downstream end of the conveyance belt 23 as a conveyance device.
is installed.

Fixing device 30 has two pairs of heating rollers 31 and 32. For example, the reheating rollers 31 and 32 are two.

A metal roller made of iron coated with fluororesin is used, and a heater 31a is installed inside the roller.

32a are arranged respectively. The heating temperature by the heating rollers 31 and 32 is normally set to about 185°C. A paper discharge roller 40 is disposed downstream of the fixing device 30.

In the electrophotographic copying machine of the present invention, the transport device in the feeding path 20, that is, the paper feed rollers 24 and 25. Conveyance roller 26. The conveyance speed by the conveyance belt 23 and the reheating rollers 31 and 32 in the fixing device 30 can be changed. The conveyance speed is a speed suitable for transferring the toner image to the transfer paper and fixing the toner image to the transfer paper by the fixing device 30 during copying.

It is slower than this speed, and can be changed to a speed of 3 to 5 m/min, which is suitable for laminating a transparent synthetic resin film with an adhesive layer formed on a sheet-like printed matter.

The copying operation performed by such an electrophotographic copying machine is as follows.

As before, the first order is as follows. In this case, the transport speeds of the a-feeding device and the fixing device 30 are set to transport speeds suitable for copying. For example, when the copying speed is 10 sheets per minute, the conveyance speed is set to about 5 to 7 m/min. When the copying operation is started, the photoreceptor on the surface of the photoreceptor drum 10 is uniformly charged by the charging device 14, and the image of the document placed on the document table 12 is transferred to the exposure device 11.
The surface of the photoreceptor drum 10 is exposed to light. This exposure forms an electrostatic latent image on the surface of the photoreceptor drum 10. The electrostatic latent image is developed with toner by a developing device 13 as the photosensitive drum 10 rotates. On the other hand, the paper feed roller 24 or 25. The transfer paper is conveyed by the conveyance roller 26 to the transfer/separation device through the upstream section 20a of the 8 conveyance path. The toner image on the photoreceptor is transferred and
The separation device 15 transfers the image onto a transfer paper conveyed from the upstream portion 20a of the conveyance path. at the same time.

The transfer paper is separated from the photoreceptor drum IO. Residual toner on the surface of the photosensitive drum 10 is removed by a cleaning device W16. The transfer paper on which the toner image has been transferred is conveyed through the downstream part 20b of the conveyance path by the conveyance belt 23, and then transferred to the fixing device 3.
0. And the heating roller 31 of the fixing device 30
and 32, the toner image is heated and melted while being pressurized and fixed onto the transfer paper. The transfer paper on which the toner image has been fixed is discharged to the outside of the machine by a paper discharge roller 40.

The electrophotographic copying machine of the present invention can also laminate sheet-like printed matter with a transparent synthetic resin film on which an adhesive layer is formed. In this case 2, as shown in FIG. 2, a transparent synthetic resin film 5 with an adhesive layer formed on one side 51a
1 is folded in half so that the surfaces 51a on which the adhesive layer is formed face each other, and a sheet-like printed matter 52 is placed in the gap.

The area of the folded film 51 is slightly larger than the area of the printed matter 52 (the peripheral edges of the folded film 51 are facing each other). and insert it into the upstream section 2Oa of the conveyance path from the bent edge side.At this time, the conveyance speed of the conveyance device and fixing device is changed to 3 to 5 m/min, which is slower than the speed during normal copying. Leave it there.And then.

No original is placed on the original table 12 to prevent an electrostatic latent image from being formed on the surface of the photoreceptor drum 10.

In this state, a normal copying operation is performed (the copying machine is operated. As a result, the laminated body 50 is made.

The sheet is conveyed through the upstream portion 20a of the conveyance path by the paper feed roller 25 and the conveyance roller 26, and comes into contact with the surface of the photoreceptor drum 10.

Further, the paper is conveyed through the downstream portion 20b of the conveyance path by the conveyance belt 23 and fed to the fixing device 30.

In this case, no electrostatic latent image is formed on the surface of the photoreceptor drum 10 and no toner is attached to the surface, so that no toner is attached to the surface of the transparent synthetic resin film 51 of the laminate 50 being transported. .

The laminated body 50 fed into the fixing device 30 is passed between the heating rollers 31 and 32 at a speed 3 slower than during normal copying operation.
Pass at a speed of ~5 m/min. While the laminate 50 passes between two rollers 31 and 32.

The adhesive layer formed on one side 51a of the transparent synthetic resin film 51 is heated and the adhesive is melted.

The film 51 is pressed against the sheet-like printed matter 52 side.

Both are firmly bonded with molten adhesive.

At the same time, the peripheral edges of the film 51 are also firmly adhered to each other. Thereby, the sheet-like printed matter 52 is laminated with the transparent synthetic resin film 51, and is ejected from the fixing device 30, and then ejected out of the machine by the paper ejection roller 40. In this way, a sheet-like printed matter or the like laminated with a transparent synthetic resin film is obtained.

In addition, in the above-mentioned embodiment, the printed matter 52 to be laminated
The laminate 50 of the transparent synthetic resin film 51 with an adhesive layer formed thereon is fed to the fixing device 30 from the single manual paper feed tray 22, but this is not applicable to electronic photographs that do not have such a manual paper feed tray. In a copying machine, the stacked body 50 may be loaded into the paper feed cassette 21 and fed.

As the transparent synthetic resin film to be laminated to the printed material, etc., there is used a material which is not denatured by the heating temperature in the fixing device and has excellent transparency, such as a polyethylene terephthalate film.

(Effects of the Invention) As described above, in the electrophotographic copying machine of the present invention, the adhesive layer is formed so that the conveying speed of the conveying device and the fixing device is slower than the speed at which transfer paper is conveyed during normal copying operation. The speed can be set to 3 to 5 m/min, which is suitable for laminating a transparent synthetic resin film to a printed matter or the like. Therefore, during this lamination, a laminate in which a transparent synthetic resin film on which an adhesive layer is formed is laminated onto a sheet-like printed matter or the like.

Since it can be passed through the fixing device at this speed, there is no risk of poor adhesion between the transparent synthetic resin film on which the adhesive layer is formed and the printed matter due to the transport speed being too high. Furthermore, if the conveyance speed is too slow, there is no risk that the transparent synthetic resin film or the adhesive layer will be heated too much, resulting in denaturation or deformation of the transparent synthetic resin film, or the adhesive in the adhesive layer flowing out to the surface side.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an electrophotographic copying machine, and FIG. 2 is a sectional view of a laminate. 10... Photosensitive drum, 11... Exposure device, 13.
...Developing device, 15...Transfer/separation device, 20...
・Conveyance path, 22...Manual paper feed tray, 23...Transportation bell), 24.25...Paper feed roller. 26... Conveyance roller, 30... Fixing device, 31.
32...Heating roller, 50...Laminated body, 51...
Transparent synthetic resin film. 52...Sheet-like printed matter. that's all

Claims (1)

[Scope of Claims] 1. An exposure device that exposes a document image to form an electrostatic latent image corresponding to the document image on a photoreceptor, and a developing device that develops the electrostatic latent image with toner; A conveyance device that conveys the transfer paper, a transfer device that transfers the toner image on the photoreceptor to the transfer paper conveyed by the conveyance device, and a transfer device that heats and melts the toner image on the transfer paper while the transfer paper is conveyed. and a fixing device that fixes the sheet onto the transfer paper using the transfer speed, and the conveyance device and the fixing device have a conveyance speed for normal copying, and a fixing device that laminates the sheet-like printed matter with a transparent synthetic resin film on which an adhesive layer is formed. 3~ suitable for
An electrophotographic copying machine with a laminating function that can change the conveyance speed to 5 m/min. 2. The electrophotographic copying machine with a laminating function according to claim 1, wherein the fixing device includes a pair of heating rollers each having a heater inside.