JPS60112368A - Image forming device - Google Patents

Abstract

PURPOSE:To execute laminate processing without using a device exclusively used for laminate by providing a special-purpose means for transferring a transparent film or a transparent film layered in a storage medium to a fixing device in a picture forming device for developing and fixing a electrostatic latent image by a toner. CONSTITUTION:A transfer means for a transparent film F is composed of a film supply roller 10, decurl roller 11, deliver roller 12, cutter 13, and guide part 14a for the fixing device 1. For both faces of a recording paper S are laminated, another pair of transfer means similar to the above-mentioned is provided. For laminating, the roller 12 starts rotating at the time of when a time synchronizing the end of the paper S with the end of a transparent film F is calculated, then the ends of the paper S and film F are simultaneously rolled in by the roller 2 and pressurizing roller 3 to be processed into laminates, and the film F is cut by a cutter 13 with a signal from a synchronizing control system at the time when the rear end of the paper S is rolled in.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an image forming apparatus, and more particularly, it is applied to electrophotographic copying machines, facsimile machines, printers, etc. that are equipped with means for fixing unfixed toner images. The present invention relates to an image forming apparatus that can be used.

(Prior art) When examining the usage of recording paper based on toner images obtained from image forming devices such as electrophotographic copying machines, facsimiles, printers, printers, etc., it is found that instruction manuals, flowcharts, product samples, menus, etc. There are examples of devices being used in applications that require complicated handling by a relatively large number of people.

Such recording paper is subject to significant damage due to dirt, tearing, and getting wet with water during use, and therefore there is a demand for improving its shelf life by some means.

In addition, even if the above-mentioned harsh usage conditions are not involved,
For example, since recording paper with color images is expensive, there are similar requirements depending on its use.

In order to meet such demands, specialized devices have been commercially available for carrying out a so-called lamination process in which a transparent film is brought into close contact with recording paper.

However, it is undesirable to provide the above-mentioned specialized equipment for laminating processing in an office or the like separately from the image forming apparatus from the viewpoint of securing space. Therefore, it has been desired to devise a simple lamination processing means that does not require a special space.

(Objective) Therefore, an object of the present invention is to provide a means by which lamination processing can be easily carried out without requiring special space.

In accordance with the above-mentioned object of the present invention, there is provided an image forming apparatus incorporating a lamination processing means.

(Structure) The structure of the present invention will be explained below based on a practical example.

In FIG. 1, reference numeral 1 indicates a fixing device built into the image forming device.

This fixing device 1 has, for example, a surface/recon resin layer 2a.
It is constructed by a combination of a cylindrical fixing roller 2 having a fluoride resin layer formed thereon, and a cylindrical pressure roller 6 disposed opposite thereto and having a fluoride resin layer filter a formed on its surface. Heat sources 2b and 3b are respectively arranged inside each of them.

A recording paper having an unfixed toner 1 image T on its surface is fed into the fixing device 1, and is held between the fixing roller 2 and the pressure roller 6 and subjected to pressure and force FA, thereby fixing the paper. It is supposed to be done.

Here, the present invention includes pressurization as a lamination processing means,
It is configured so that the same process can be performed using the fixing device that is originally built into the image forming apparatus without providing a special heating source. A dedicated conveyance means is provided to guide the image to the fixing device.

In the example shown in FIG. 1, the conveying means includes a film supply roller 10, a decurling roller 11, a pair of delivery rollers 12, a cutter 16, and a certain interior 14a formed by bending a part of the cover 14. Compiled by etc.
I'm here.

The film supply roller 10 is pivotally supported by a stationary member to support the transparent film F wound into a roll. As the transparent film F, for example, a polyester film having a thickness of about 100 μm is used. However, the toner image (contact surface with IJT) of this polyester film is
A thin layer of thermoplastic material having a melting point close to that of the toner is formed. For example, acrylic resin is used as the thin layer forming material.

Note that the width of the transparent film F is matched to the width of the recording paper S.

The decurling roller 11 is elastically supported by a compressible spring 15 whose one end is hung on an immovable member.
Movement of the roller 11 within the elongated hole 16 by the spring 15 is prevented by balancing the tension of the transparent film F.

The feed roller 12 holds the transparent film F,
The fixing device 1 is connected to the drive system and fixes the transparent film F.
It has the function of sending it towards.

The cutter 16 is composed of two blades arranged opposite to each other with the transparent film F in between, and has the function of cutting the transparent film F according to the length of the recording paper S.

To carry out normal lamination processing, it is sufficient to use the conveying means having the above configuration, but when covering the recording paper S with a transparent film on both sides, another set of conveying means having exactly the same configuration as above is required. will be established. This conveyance means is only shown in the drawing to avoid complication of explanation.

In this example, when performing lamination processing, a switch button provided on the image forming apparatus is turned on. Upon receiving this signal, the synchronous control system becomes functional, and when the paper detection sensor installed in the conveyance path of the recording paper S or on the registration roller for feeding the recording paper detects the feeding of the recording paper S, Counting of clock pulses is started in the synchronous control system. Then, from this clock pulse, the feeding speed of the recording paper S, the feeding distance, etc., the timing at which the leading edge of the recording paper S can be synchronized with the leading edge of the transparent film F is calculated, and at that timing, the rotation of the feeding roller 12 is started. . In this way, the leading edge of the recording paper S and the leading edge of the transparent film F are simultaneously connected to the fixing roller 2. The transparent film F is held in the pressure roller 6 and laminated, and the transparent film F is moved by the cutter 1 at the same time as the trailing edge of the recording paper S according to the signal from the synchronous control system.
6.

Next, another practical example of the present invention will be explained with reference to two figures of the spear and six figures of the fang.

The image forming apparatus in this example is a transfer type electrophotographic copying machine.

In the figure, as is well known, the reference numeral 16 indicates the recording paper S.
17 is a registration roller,
18 and 19 are a pair of transport rollers, 20 is a photosensitive drum, 21 is a charger, 22 is a light shielding plate disposed in the exposure area, 26 is a toner developing device,
Reference numeral 24 indicates a transfer charger, reference numeral 25 indicates a conveyor belt, and reference numeral 26 indicates a paper discharge tray.

Note that the fixing device is similar to that shown in Figure 2.1, and is designated by the same reference numeral as in Figure 3.1 for convenience.

In this example, the conveying means includes a guide stand 27 installed above the paper discharge tray 26, an insertion port 28 opened in the case, a pair of feed rollers 9, and a curved guide plate 50. , a pair of feed rollers 61 , and a cover 14
Guide portions 14a, 14'a formed by bending a part of
It is composed of etc. Further, as shown in Fig. O'6, inside the insertion port 28, with the insertion passage in between,
A light-emitting element a and a light-receiving element 60b are arranged above and below, respectively. Here, instead of the light emitting element 30a and the light receiving element 30b, a microswitch can be used as a self-layer.

In this example, when performing lamination processing, the recording paper that has already undergone the fixing process is given the same dimensions ((
The cut 2t transparent films are overlapped and inserted from the guide table 7 through the insertion port 28.

When the leading edge of these recording paper and transparent film passes between the light emitting element 30a and the light receiving element bOb, 11U
, the feed rollers 29 and 31 are driven in response to signals obtained from the light receiving element Ob. In addition, the normal copying process is constant from receiving this signal until the end of the copying process. Controlled to be paused. It is also possible to consider a method in which the film is sterilized by passing through a fixing device in synchronization with unfixed copies.

If it is desired to laminate the front and back sides of the recording paper, the recording paper S may be wrapped with a transparent film F and inserted through the insertion port 28, as shown in FIG.

(Effects) Since the image forming apparatus according to the present invention can use the fixing device provided for the image forming apparatus for laminating processing, there is no need for a dedicated machine for laminating processing, and it is possible to finish recording immediately. This is advantageous because the laminated recording paper can be immediately laminated.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the vicinity of the fixing device in an image forming apparatus illustrating an example of the present invention, and Figure 2 is a sectional view of the image forming apparatus illustrating another example of the present invention. FIG. 6 is a cross-sectional view of the vicinity of the insertion opening in the same figure as above, and FIG. 4 is a sectional view of the vicinity of the insertion opening illustrating the insertion state of recording paper and transparent film. DESCRIPTION OF SYMBOLS 10 Film supply roller, 11. Curling roller, 12... Delivery roller, 13 Cutter, 14a
. Guide section, 27...Guidance stand, 28/Inlet, 29.61
Sending roller, 30a... light emitting element, 30b light receiving element. Agent Kokoro Kabayama

Claims (1)

[Claims] In an image forming apparatus that develops an electrostatic latent image on a recording medium with toner and fixes this unfixed toner image by a fixing device, a transparent film or a transparent film overlaid on the recording medium is fixed. An image layering apparatus characterized in that it is provided with a dedicated conveying means for guiding the image to the apparatus.