JPS61212870A - Electrostatic photographing device - Google Patents

Abstract

PURPOSE:To obtain an electrostatic photographing device preventing paper jam by providing a sensitizing drum, a developing part, a transfer part and a fixing part in a box, drying a supply paper with the aid of a fixing heat roller and strengthening the property of the paper. CONSTITUTION:In the box 1, the photosensitive drum 2 is installed, along which an electrostatic part 3, a laser emitting part 4, the transfer part 6 and a destaticizing part 7 are disposed. The fixing part 10 composed of the heat roller 8 and a pressure roller 9 is installed at the downstream side of the transfer part 6. A pressure roller 10 is installed at a side opposite to the pressure roller 9 of the heat roller 8. Then the paper form a paper supply part 14, which laminates and holds the paper 13 at the left upper part of the box 1, is passed through the rollers 8 and 11, and the paper 13 whose property is weakened due to moisture absorption is dried to strengthen its property, thereby preventing the paper jam in the device. The roll 8 serves as fixing and drying the paper 13, and a paper discharge part 13 is positioned at the same side as the supply part 14, whereby the overall device can be compacted, and the paper jam can be efficiently prevented.

Description

[Detailed description of the invention] Industrial applications TECHNICAL FIELD This invention relates to an electrostatographic apparatus.

In conventional electrostatographic apparatuses, paper is generally supplied in a cassette case.

Problems to be Solved by the Invention However, the paper contains moisture due to the surrounding environment, and as a result, the stiffness of the paper becomes weak. This causes the problem of paper jams.

The present invention has been made in view of the above points, and an object of the present invention is to provide an electrostatic photographic apparatus that can prevent paper jams.

Means for Solving the Problems This invention provides a housing 1 with a photoreceptor 2 on which an electrostatic latent image is formed.
, a developing section 5, a transfer section 6, and a fixing section 1o are arranged, and the paper 1 is
A heating section 12 is provided in a path for conveying the photoreceptor 3 between the photoreceptor 2 and the transfer section 6.

Further, using the fixing section 1o having a heat roller 8, a pressing roller 11 is brought into contact with the heat roller 8 of the fixing section 10 to form a heating section 12.

Therefore, the developing section 5 develops the electrostatic latent image formed on the outer periphery of the photoreceptor 2, the transfer section 6 transfers this image onto the paper 13, and the fixing section 10 fixes the image.

The paper] 3 is heated and dried by the heating section 12 and becomes stiff. Therefore, paper jams in the transport path of the paper 13 are prevented.

Further, by using the fixing section 10 having the heat roller 8 and forming the heating section 12 using the heat roller 8, the structure of the heating section 12 can be simplified, and accordingly, the paper supply section 14 and the paper ejection section 15 in the housing 1.
It is possible to reduce the installation space by placing it on one side.

Example An embodiment of the present invention will be described based on the drawings.

A photoreceptor 2 is rotatably provided in a housing 1, and a charging section 3, a laser emitting section 4, a transfer section 6, and a static eliminating section 7 are arranged along the photoreceptor 1. Further, on the downstream side of the transfer section 6, a fixing section 1o consisting of rollers 1 to 8 and a pressure roller 9 is provided.
is provided. A heating section 12 is provided in which a presser roller 11 is brought into contact with the heat roller 8.

Furthermore, a paper supply section 14 and a paper discharge section 15, which stack and hold papers 13, are arranged on one side of the housing. Furthermore, a conveyance path 19 is provided which is composed of a belt conveyor 16, 18 and a guide plate 7 and conveys the sheet 13 between the photoreceptor 2 and the transfer section 6, and conveys the sheet 13 from the transfer section 6 to the fixing section 1o.
A conveyor 20 is provided to convey the bell 1.

In such a configuration, in the process of rotating the photoreceptor 2 once, the charging section 3 first forms a charged layer on the outer periphery of the photoreceptor 2,
The laser emitting unit 4 emits light in response to character information to form an electrostatic latent image, which is developed by the developing unit 5. During this time, the paper 13 is fed through the conveyance path 19, the image on the photoreceptor 2 is transferred onto the paper 13 by the transfer section 6, and then the paper 13 is held between the heat roller 8 and the pressure roller 9 and fixed.

Immediately before the paper 13 is supplied to the transfer unit 6, it is heated by the heat roller 8.
Since it is held between the presser roller 1 and the presser roller 1 and heated, even if it was previously damp, it is dried and its stiffness is restored. Therefore, paper jams can be prevented.

Furthermore, by using the rollers 1 to 8 of the fixing section 10 as one component of the heating section 12, the structure of the heating section 12 can be simplified. In addition, since the pressure roller 9 and the press roller 11 face each other with the heat roller 8 in between, the paper supply section 14 and the paper discharge section 15 are arranged on one side of the housing 1 to provide an installation space. It is possible to reduce the

Effects of the Invention Since the present invention is configured as described above, the paper can be dried by the heating section and then fed between the transfer section and the photoreceptor. Paper jams in the conveyance path can be prevented, and the structure of the heating section can be simplified by using a fixing section with a heat roller and forming the heating section by bringing the presser roller into contact with the heat roller. Accordingly, the paper supply section and the paper discharge section can be disposed on one side of the casing, resulting in an effect such as being able to reduce the installation space.

[Brief explanation of the drawing]

The drawing is a side view showing an embodiment of the present invention.

Claims (1)

[Claims] 1. A photoconductor on which an electrostatic latent image is formed on the outer periphery, a developing section and a transfer section located along the outer periphery of the photoconductor, and a transfer section located downstream of the transfer section, in a housing. What is claimed is: 1. An electrostatic photographic apparatus comprising: a fixing section; and a heating section for heating the paper in a path for conveying the paper between the photoreceptor and the transfer section. 2. A photoconductor on which an electrostatic latent image is formed on the outer periphery, a developing section and a transfer section arranged along the outer periphery of the photoconductor, and a housing in which a paper supply section and a paper discharge section are disposed on one side. and a fixing section having a heat roller is provided located on the paper discharge section side, and the heat roller An electrostatic photographic apparatus characterized in that a heating section is provided in which a pressing roller that presses the paper is brought into contact with the heating section.