Sheet feeder, image reading apparatus and image forming apparatus

A paper and image technology, applied in the field of image forming devices, can solve the problems of increased return amount and strong skeleton, and achieve the effects of preventing double feed and restraining the amount of movement

Inactive Publication Date: 2008-11-26
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, when the type of paper is thick paper, the skeleton of the paper is strong, and the return force of the reverse roller is directly transmitted to the paper, and the return amount increases.

Method used

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  • Sheet feeder, image reading apparatus and image forming apparatus
  • Sheet feeder, image reading apparatus and image forming apparatus
  • Sheet feeder, image reading apparatus and image forming apparatus

Examples

Experimental program
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Embodiment Construction

[0054] Hereinafter, the present invention will be specifically described based on the drawings showing the embodiments of the present invention.

[0055] figure 1 It is a cross-sectional view showing the overall structure of a digital multifunction peripheral including the paper delivery device of the present invention. figure 1 The illustrated digital multifunction peripheral has a printer unit 1 that forms an image on a sheet such as paper or OHP film (hereinafter simply referred to as paper), a paper supply unit 2 that supplies paper to the printer unit 1, and a Scanning unit 3 that generates image data from an original image.

[0056] The scanner unit 3 has a light source unit 32 , a mirror unit 33 , and a reading unit 34 as an optical image reading unit. The light source unit 32 irradiates reading light onto a document placed on the document table 31 or a document conveyed from the automatic document feeder 35 . The mirror unit 33 has a pair of mirrors with reflectiv...

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PUM

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Abstract

The invention relates to a paper delivering device, an image reading device and an image forming device. A paper compacting part (240) freely advancing and retreating relative to a paper guide rail (220) is arranged between a front end along a paper transmitting direction loaded in a manual tray (230) and a paper supply roller (234). When a plurality of papers intrude a compression part of the paper supply roller (234) and a reverse roller (235), which is rotated reversely, therefore paper at the side of the reverse roller retreats to the side of the manual tray (230), but, the retreating paper and the paper compacting part (240) are contacted through causing the paper compacting part (240) to extruding from an upper surface of the paper guide rail (220), thereby restraining the motion quantity when retreating.

Description

technical field [0001] The present invention relates to a sheet delivery device capable of reliably preventing sheet double-feed, an image reading device and an image forming apparatus having the sheet delivery device. Background technique [0002] As the paper feeding method in the image forming apparatus, the following two methods are used together, namely: the paper feeding cassette method, in which a large amount of paper of a fixed size is stored in the paper feeding cassette, and the paper is taken out one by one from the paper feeding cassette, Paper feeding to the print processing section; manual tray method, using paper of variable size or only a small amount of paper placed on the manual tray, paper is taken from the manual tray and fed to the print processing section. [0003] Since only the number of sheets matching the print request is placed on the manual tray in many cases, the paper loading capacity of the manual tray is small. Speeding up of printing proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/00H04N1/00
CPCB65H2511/524B65H3/5261B65H3/0684B65H2515/34
Inventor 松友靖左山晴生森田极冈田三树也高井康博
Owner SHARP KK
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