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Image forming apparatus

An image and toner image technology, applied in the field of image forming devices, can solve problems such as paper jams and difficult peeling

Inactive Publication Date: 2008-01-16
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Then, when printing on the back side of the recording paper, when the recording paper is passed between the rollers of the fixing device from the rear end, due to the adhesive force of the toner at the rear end of the recording paper, the rear end of the recording paper Difficult to separate from the roller, the recording paper will wrap around the roller, causing the problem of paper jams

Method used

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Embodiment Construction

[0035] Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

[0036] FIG. 1 is a schematic diagram showing an embodiment of an image forming apparatus of the present invention. The image forming apparatus 100 acquires image data read from document paper, or acquires image data received from the outside, forms a monochrome image represented by the image data on recording paper, and roughly distinguishes its structure from the original document. A paper feeding unit (ADF) 101 , an image reading unit 102 , a printing unit 103 , a recording paper feeding unit 104 , and a paper feeding unit 105 are configured.

[0037]In the document paper conveying section 101, when at least one document sheet is placed in the document setting tray 11, the document sheets are drawn out one by one from the document setting tray 11 and conveyed, and the document is guided. The paper is passed through the document reading window 102 a of th...

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Abstract

In one embodiment of the invention, in an image forming apparatus that reverses the front and back of recording paper by performing switchback transport of the recording paper to perform duplex printing of the recording paper, the image forming apparatus is provided with a control means that, when performing duplex printing of the recording paper, forms a void area at a leading end and a trailing end of the recording paper, the void area preventing curling of the recording paper around a roller.

Description

[0001] This application claims priority based on Invention No. 2006-190769 filed in Japan on July 11, 2006. By saying this, the entire content of this is incorporated in this application. technical field [0002] The present invention relates to an image forming apparatus that performs double-sided printing on recording paper by reversing the front and back sides of the recording paper by performing switchback transport on the recording paper. Background technique [0003] Generally, in an image forming apparatus such as a copier, a printer, or a facsimile apparatus, an electrostatic latent image is formed on a photoreceptor, a toner is supplied from a developing device to the photoreceptor, and the electrostatic latent image on the photoreceptor is formed using the toner. Development forms a toner image on a photoreceptor, transfers the toner image from the photoreceptor to recording paper, heats and presses the recording paper, and fixes the toner image on the recording pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/23G03G15/00
CPCG03G15/235
Inventor 藤田正彦谷口匡桂典史大川康信高井康博
Owner SHARP KK
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