Paper feeding apparatus for printer having double feed prevention unit

A technology of printer and paper supply, applied in the direction of equipment, printing device, printing, etc. of electric recording process applying charge pattern

Inactive Publication Date: 2005-11-30
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in a typical paper feeding apparatus, the sheets P may stick to each other due to the electrostatic force between the sheets, whereby it is possible to convey two or more sheets P even using the finger unit 24

Method used

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  • Paper feeding apparatus for printer having double feed prevention unit
  • Paper feeding apparatus for printer having double feed prevention unit
  • Paper feeding apparatus for printer having double feed prevention unit

Examples

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Embodiment Construction

[0026] Matters defined in the following description, such as detailed construction and elements, are given to facilitate a comprehensive understanding of the embodiments of the present invention. Accordingly, those skilled in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for conciseness.

[0027] image 3 is to show the structure of an image forming apparatus including the paper feeding apparatus according to the present invention.

[0028] refer to image 3 , an electrophotographic color image forming apparatus comprising: a photosensitive drum 110 as a photosensitive medium, a charging device 111 for charging the photosensitive drum 110, a laser scanning laser scanning onto the charged photosensitive drum 110 to form a predetermined electrostatic latent image Unit (LSU) 112 . ...

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PUM

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Abstract

A paper feeding apparatus of a printer is provided and includes a double feed prevention unit. The paper feeding apparatus includes a finger unit for generating a curl at a front edge portion of the paper picked up by the pick-up roller. The finger unit presses the front edge portion of the paper that is mounted on the knock-up plate. A ventilation device is also provided to form an air gap under the picked paper by injecting air in the air chamber toward the front edge portion of the paper.

Description

technical field [0001] The present invention relates to a paper feeding device of a printer, and more particularly, the present invention relates to a paper feeding device of a printer including a double feed preventing unit to prevent two sheets from being fed at the same time. Background technique [0002] Generally, an image forming apparatus such as a printer or a copier includes a paper feeding apparatus. The paper feeding device stores a plurality of sheets and sequentially feeds one sheet to the main body of the printer. [0003] figure 1 A typical structure of an electrophotographic color image forming apparatus is shown. [0004] refer to figure 1 , an electrophotographic image forming apparatus includes a photosensitive drum 10 as a photosensitive medium. Next, the apparatus includes: a charging device 11 for charging the photosensitive drum 10, a laser scanning unit (LSU) 12 for scanning light onto the charged photosensitive drum 10 so as to form a predetermin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/00B41J13/00B65H1/08B65H1/12B65H1/26B65H3/06B65H3/48B65H3/52B65H3/56B65H3/68
CPCB65H3/5215B65H3/0638B65H1/08B42D25/328B42D25/475
Inventor 李镇爱郑兴燮
Owner SAMSUNG ELECTRONICS CO LTD
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