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image forming apparatus

An image and path technology, applied in the field of image forming devices, can solve problems such as paper waste

Active Publication Date: 2022-07-08
KONICA MINOLTA TECH DEV WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some of the paper is still unused blank paper, which will cause paper waste if it is disposed of as waste paper

Method used

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Examples

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Effect test

example 1

[0062] Example 1: Reference figure 2 , when the paper jam determination unit determines that the paper is jammed, execute step S11: the first detection unit 610 detects whether there is paper at the fixing unit 340 of the first conveying path 210, and executes step S12: the second detection unit 620 detects the presence or absence of paper at the image forming unit 330 of the first conveyance path 210 .

[0063] Whether the paper is still the paper after image fixing has a great relationship with the position of the paper on the first conveyance path 210 when a paper jam occurs. Specifically, there is a great relationship between the relative position of the paper and the fixing unit 340 of the first conveyance path 210 . If the paper is upstream of the fixing unit 340, the paper is still the paper with the image unfixed, and can be used again after removing the toner; if the paper is downstream of the fixing unit 340, the image has been fixed on the paper and can be dischar...

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PUM

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Abstract

The present invention relates to an image forming apparatus, wherein the image forming apparatus includes a paper conveying system, and a paper feeding unit, a first conveying roller pair, an image forming unit including a photoreceptor, a paper feeding unit, a first conveying roller pair, a photoreceptor, A fixing unit including a pair of fixing rollers, a first paper discharge unit including a second pair of conveying rollers, and a paper jam determination unit; the image forming apparatus further has a first detection unit, the first detection unit detects whether there is paper at the fixing unit; the second a detection unit that detects whether there is paper at the image forming unit; when the first detection unit detects that there is no paper at the fixing unit of the first conveyance path, and the second detection unit detects that there is no paper at the image forming unit, the first conveyance The roller pair rotates in the reverse direction to convey the paper in the reverse direction, and the second conveyance roller pair rotates in the forward direction to discharge the paper. Thereby, by adjusting the operation of the first conveyance roller pair and the second conveyance roller pair, it is possible to sort the jammed sheets, which contributes to the reduction of wasted sheets.

Description

technical field [0001] The present invention relates to an image forming apparatus, and more particularly, to an image forming apparatus capable of sorting a jammed sheet by adjusting the operation of a first conveyance roller pair and a second conveyance roller pair. Background technique [0002] In a conventional image forming apparatus, the image forming apparatus includes a paper conveying system, and a paper feeding unit, a first conveying roller pair, an image forming unit including a photoreceptor, and a fixing unit are sequentially provided on a first conveying path of the paper conveying system. , the second conveying roller pair, the first paper discharge unit and the paper jam judgment unit. When the paper jam determination unit determines that the paper is jammed, the first conveying roller pair and the second conveying roller pair stop rotating, and the user checks the photoreceptor and the fixing unit. If there is jammed paper at the photoreceptor or the fixin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/00G03G15/20
CPCG03G15/6529G03G15/657G03G15/6573G03G15/2028
Inventor 余莲芳
Owner KONICA MINOLTA TECH DEV WUXI