Sheet feeder and image forming apparatus

A paper feeding device and paper technology, which are applied in the directions of object supply, transportation and packaging, and object separation, etc., can solve the problems of upper surface position control obstacles and other problems, and achieve the effect of easy control and simple composition.

Active Publication Date: 2010-12-08
KONICA MINOLTA BUSINESS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Also, if the blown air is strengthened in order to float the paper, there is a possibility that the rear end of the paper and the height detection sensor lever will also float.
[0024] If so, it is impossible to make the height detection sensor lever move accordi

Method used

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  • Sheet feeder and image forming apparatus
  • Sheet feeder and image forming apparatus
  • Sheet feeder and image forming apparatus

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0047] Embodiments according to the present invention will be described below with reference to the drawings.

[0048] figure 1 It is a schematic diagram showing the configuration of an image forming apparatus including a digital color copier.

[0049] The image forming apparatus shown in the figure (sometimes referred to as “image forming apparatus main body” for convenience of description) has an automatic document feeder 1 on the upper part of the apparatus main body, and an image reading unit 2, an image forming unit 3, A belt setting section for the conveyor belt unit 4 , a paper feeding section 5 , a fixing device T, an inversion discharge / refeed section 6 , and an ADU 7 as an inversion conveyance section.

[0050]The automatic document feeder 1 is a device that feeds originals one by one to an image reading position, and discharges the originals whose images have been scanned to a predetermined position.

[0051] The automatic document feeder 1 has a document placemen...

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PUM

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Abstract

A sheet feeder comprising a sheet receiving section (P20) having an elevating/lowering plate (960), a member (920) for regulating the sides of sheets, an air blowing section (986) for blowing air toward the sides of sheets at upper levels out of the sheets received in the sheet receiving section, a sheet suction-conveyance section (VT20) installed above the sheet receiving section with a gap kept from the uppermost sheet of the sheets received in the sheet receiving section, a reflective sensor (970) for detecting the upper limit position of stacked sheets received in the sheet receiving section, and a control section for performing control to elevate the elevating/lowering plate when an output from the reflective sensor indicates an intermediate state provided between a sheet brought into a floating state by an air flow which is blown from the air blowing section, and a sheet maintaining the stacked state. As a result, stabilized sheet-feeding can be ensured even if a thick sheet of a small size is used, and the upper limit position of sheets can be controlled by a simple constitution.

Description

technical field [0001] The present invention relates to a paper feeding device that sucks and feeds thin sheets of paper from above a stack of paper stacked and stored in a paper storage unit through a paper suction and conveying unit, and relates to a copier, a printer, a facsimile having the paper feeding device machine and other image forming devices. Background technique [0002] By performing charging, exposure, and development processes, a toner image based on originals or image data is formed on an image carrier, and the toner image is directly transferred to paper or the toner image is transferred through an intermediate transfer body. An image forming apparatus that performs a fixing process after an image is transferred to a sheet is widely known. [0003] Such an image forming apparatus includes: a paper storage unit capable of stacking and storing sheets of paper; and a paper feeding device having a paper feeding unit that feeds the paper in the paper storage un...

Claims

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Application Information

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IPC IPC(8): B65H1/14B65H3/12B65H3/48
CPCB65H3/128B65H2553/414B65H1/14B65H2511/515B65H2553/412B65H2511/51B65H2511/20B65H2402/10B65H2405/15B65H2801/06B65H3/48B65H2513/40B65H2405/332B65H7/04B65H2220/01B65H2220/02
Inventor 铃木智雄
Owner KONICA MINOLTA BUSINESS TECH INC
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