JPS636588A - Electrophotographic copying machine - Google Patents

Abstract

PURPOSE:To laminate a transparent synthetic resin film to a sheet-like printed matter, etc., by exposing a fixing device to the outside of a machine body, and driving only the fixing device at the time of exposure. CONSTITUTION:At the time of a laminating process, the upper half body 41 of an electrophotographic copying machine is separated from the lower half body 42, and by turning it upward centering around a pivot 43, a fixing device 30 is exposed to the outside of a machine. In this state, heating rollers 31, 32 and a discharge paper roller 33 are driven to rotate, and also, by bringing heating heaters 31a, 32a, the rollers 31, 32 are set to a prescribed temperature. Subsequently, when a laminated body is inserted into the device 30, the laminated body passes through between the rollers 31, 32, and discharged to the outside of the device 30. This laminated body is heated and pressed in the course of passing through the rollers 31, 32, an adhesive agent which has been formed on one face of a transparent synthetic resin film is melted, and a sheet-shaped printed matter is laminated with the transparent synthetic resin film.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electrophotographic copying machine, and in particular, to an electrophotographic copying 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 transparent synthetic resin films has been carried out using a specialized lamination machine.

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

This is carried out by laminating sheet-like printed materials and the like via an adhesive, and passing the laminated body through the inside of the laminating machine. This is a special laminating machine.

The passing laminate is heated and pressurized 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 sheet-like printed matter should be laminated?

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

Furthermore, since the durability of printed materials that have been laminated once is improved, there is no need to frequently laminate sheet-like printed materials. Additionally, since it is a laminating machine, it cannot be used for other purposes.

Furthermore, since dedicated laminating machines are relatively expensive, they are hardly ever popular for home use and for 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 melting the adhesive of the adhesive layer between the two. It is used to adhere. 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 apply pressure and heat to melt a toner image transferred to a transfer paper on a boat, and fix it on the transfer paper. The fixing device is 2
Usually, the temperature is set at 180 to 200°C. When laminating sheet-like printed matter with a transparent synthetic resin film on which an adhesive layer is formed, heat the adhesive of the adhesive layer formed on the transparent synthetic resin film to a temperature that melts it, and then laminate the printed matter and the transparent It is necessary to transport it at a speed that will ensure that the synthetic resin film is bonded to the synthetic resin film. If the conveyance speed is too fast, the adhesive in the adhesive layer will not be fully melted and the two will not be reliably bonded, and if the conveyance speed is too slow, the adhesive in the adhesive layer will melt too much and flow out. Further, the heat fixing device used in the copying machine of the present invention preferably includes both heating rollers. This is done when laminating both the front and back sides of sheet-like printed materials, etc. One side heating row is used to heat and melt the adhesive in the adhesive layer.

For example, the adhesive layer of the film on one front side is heated through the film, and the adhesive layer of the film on the back side is heated through the front film and the printed matter.

In this way, a lot of heat is applied to the synthetic resin film on the front surface, but not so much heat is applied to the film on the back surface.However, there is no problem in fixing the toner image.

When laminating a synthetic resin film onto a printed matter, etc., the shrinkage of the film differs between the front and back sides, so there is a risk that the entire film may curl or wave along the rollers. The inventor of the present application has found that the fixing device of an electrophotographic copying machine can be suitably used for this lamination process.

The present invention has been made based on this knowledge.

The electrophotographic copying machine of the present invention includes an exposure device that exposes a document image to form an electrostatic latent image corresponding to the document image on a photoreceptor;
A developing device that develops the electrostatic latent image with toner, a transfer device that transfers the toner image on the photoreceptor to transfer paper, and a transfer device that heats and melts the toner image on the transfer paper while the transfer paper is being conveyed inside. The machine includes a fixing device that fixes the transferred image onto the transfer paper.

The fixing device can be exposed to the outside of the machine, and when exposed, only the fixing device is driven, thereby achieving the above object.

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

As shown in FIG.
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.

The photosensitive drum 10 is rotatable in the direction indicated by an arrow B in one drawing. Photosensitive drum 1 from the exposed position
A charging device 14 is disposed on the upstream side in the rotational direction of 0. Further, a developing bag 213 is provided downstream in the rotational direction of the photosensitive drum 10 from the position where the photosensitive drum 10 is exposed. Further, below the photosensitive drum 10, a transfer/separation device 15 is provided. The transfer/separation device 1
A cleaning device 16 is disposed between the charging device 5 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 runs from an upstream section 20a upstream of the photoreceptor drum 10 inside the machine, to
It communicates with the downstream section 20b on the downstream side. At the upstream end of the upstream portion 20a of the conveyance path, there is a paper feed cassette 2 containing transfer paper.
1 is installed. The upstream portion 20a of the conveyance path transfers the transfer paper fed from the inside of the paper feed cassette 21 to the paper feed roller 24.
A conveying device composed of conveying rollers 25 transfers and
It is led to the separation device 15.

A conveyance roller 23 serving as a conveyance device is disposed midway along the downstream portion 20b of the conveyance path, and a fixing device 30 is attached to the downstream end thereof.

The fixing device 30 has a pair of heating rollers 31 and 32. The reheating rollers 31 and 32 are made of, for example, iron coated with a fluororesin, and heaters 31a and 32a are provided inside the rollers, respectively. The heating temperature by the heaters 31a and 32a is normally set to about 185°C. The fixing device 3
A paper ejecting roller 33 is disposed downstream of the heating rollers 31 and 32 in the paper.

The heating rollers 31 and 32 in the fixing device 30 and the paper ejection roller 33 are the photosensitive drum 10 and the paper feed roller 24 . It is rotationally driven by a motor 34 that is separate from the drive source that drives the conveyance rollers 23 and 25 and the like. The motor 34 is disposed near the fixing device 30. Therefore, the motor 34 can drive only the heating rollers 31 and 32 in the fixing device 30 and the paper ejection roller 33. The heaters 31a and 32a are configured to be energized when the motor 34 is driven.

As shown in FIG. 2, the body of the electrophotographic copying machine of the present invention can be divided into an upper half 41 and a lower half 42 with the transfer paper conveying path 20 as a boundary.

The upper half 41 and the lower half 42 are connected to the paper feed cassette 21
It is pivotally supported on a shaft 43 above. The fixing device 30
is attached to the lower half body 42, and when the upper half body 41 is separated from the lower half body 42 and rotated upward about the pivot shaft 43, the fixing device 30 is exposed to the outside of the machine.

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

As before, the nine orders are as follows. In this case, the upper half 4
1 and the lower half 42 are combined. and.

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 photoreceptor on the surface of the photoreceptor drum 10 is charged uniformly.
The image of the document placed thereon is exposed onto the surface of the photoreceptor drum 10 by an exposure device 11 . 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 transfer paper is transported by the paper feeding roller 24 and the conveyance roller 25 through the upstream section 20a of the conveyance path to the transfer/separation device 15.
Transported to. Then, the toner image on the photoreceptor is transferred by the transfer/separation device 15 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 photosensitive drum 10. Residual toner on the surface of the photosensitive drum 10 is removed by a cleaning device 16.

The transfer paper on which the toner image has been transferred is conveyed through the downstream portion 20b of the conveyance path by conveyance rollers 23, and is fed to the fixing device 30. Then, while passing between the heating rollers 31 and 32 of the fixing device 30, 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 33. in this case,
The heating rollers 31 and 32° and the paper ejection roller 33 are connected to the motor 3.
4.

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, as shown in FIG. 3, 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 layers are formed face each other, and a sheet-like printed matter 52 is placed in the gap.A laminate 50 is used. The area of the folded film 51 is slightly larger than the area of the printed matter 52,
The peripheral edges of the bent film 51 are opposed to each other.

During this lamination process, the body of the electrophotographic copying machine separates the upper half 41 from the lower half 42 and rotates the pivot 4.
3, and the fixing device 30 is exposed to the outside of the machine. In this condition.

The motor 34 of the fixing device 30 is driven. Due to this.

The heating rollers 31 and 32 and the discharge roller 33 are rotationally driven, and the heaters 31a and 32a are energized and set to a predetermined temperature. Then, the fixing device 3
0, the laminate 50 is inserted. As a result, the stacked body 50 passes between the heating rollers 31 and 32, and is discharged to the outside of the fixing device 30 by the paper discharge roller 33. The laminate 50 is heated and pressurized while passing between the heating rollers 31 and 32, and the adhesive of the adhesive layer formed on one side 51a of the transparent synthetic resin film 51 is melted, and the film is 51 is pressed onto the sheet-like printed matter 52, and both are firmly adhered 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. 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 example, two bodies are upper halves.

Although the structure is configured so that it can be separated from the lower half, and the fixing device is exposed to the outside of the machine by being separated, the structure is not limited to this.

Constructed so that it can slide in a direction perpendicular to the transfer paper conveyance direction,
The fixing device may be exposed to the outside of the machine by sliding it in this direction and pulling it out of the machine.

In addition, although the heating roller of the fixing device is driven by a motor separate from the drive source of the photoreceptor drum, etc.,
A configuration in which they are driven by the same driving source may also be used. In this case, a clutch or the like is interposed so that only the heating roller or the like can be driven.

(Effects of the Invention) As described above, the electrophotographic copying machine of the present invention can easily laminate sheet-like printed matter or the like with a transparent synthetic resin film on which an adhesive layer is formed. During this lamination, the fixing device is exposed to the outside of the machine and only the fixing device is used, so there is no risk of film, etc. coming into contact with the photoconductor, and there is no risk of damaging the photoconductor, as only the fixing device is driven. , economical.

4. Figure 1 is a vertical cross-sectional view of the electrophotographic copying machine, Figure 2 is a vertical cross-sectional view showing the fixing device exposed, and Figure 3 is a vertical cross-sectional view of the laminate. be.

10... Photosensitive drum, 11... Exposure device, 13.
...Developing device, 15...Transfer/separation device, 20...
Conveyance path, 30... Fixing device F, 31.32... Heating roller, 33... Paper ejection roller, 34... Motor,
41... Upper half body, 42... Lower half body, 43...
Pivot, 50... Laminate, 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; Inside the machine are a transfer device that transfers the toner image on the photoreceptor to the transfer paper, 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 inside. An electrophotographic copying machine, comprising: an electrophotographic copying machine in which the fixing device can be exposed to the outside of the machine, and only the fixing device is driven when the fixing device is exposed. 2. The fixing device is attached to the lower half of the machine body, which can be divided into an upper half and a lower half with a transfer paper conveyance path as a boundary;
2. The electrophotographic copying machine according to claim 1, wherein the fixing device is exposed when the device is divided. 3. The fixing device is capable of sliding in a direction perpendicular to the conveying direction of the transfer paper and being pulled out of the machine.
The electrophotographic copying machine described in Section 1. 4. The electrophotographic copying machine according to claim 1, wherein the fixing device includes a pair of heating rollers each having a heater inside.