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Paper feeding apparatus for image forming apparatus

a technology of feeding apparatus and paper feeding, which is applied in the direction of registering device, thin material processing, article separation, etc., can solve the problems of printing errors and misalignment of images on paper, and achieve the effect of avoiding misalignment and printing errors

Inactive Publication Date: 2007-03-29
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] Accordingly, the present invention solves the above-mentioned problems. One object of the present invention is to provide a paper feeding apparatus for an image forming apparatus having an improved construction so that the leading edge of a paper being fed into the image forming apparatus is always properly aligned regardless of the thickness of the paper.

Problems solved by technology

Print errors and misaligned printing of an image on the paper can occur.

Method used

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  • Paper feeding apparatus for image forming apparatus
  • Paper feeding apparatus for image forming apparatus
  • Paper feeding apparatus for image forming apparatus

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Embodiment Construction

[0034] Hereinbelow, the preferred embodiments of the present invention are described in detail with reference to accompanying drawings. In the following description, a detailed description of known functions and configurations incorporated herein are omitted when it may make the subject matter of the present invention rather unclear.

[0035] As shown in FIGS. 3 to 6, a paper feeding apparatus of an image forming apparatus according to an embodiment of the present invention includes a first feeding roller assembly 110, a second feeding roller assembly 120, a plurality of tension idle wheels 200, a paper's leading-edge alignment member 300, a sensing unit 400, and a driving unit 500.

[0036] The first feeding roller assembly is rotatably installed on a paper feeding path C. The first feeding roller assembly 110 includes a first rotary shaft 111 and a plurality of first feeding rollers 112 mounted on the rotary shaft 111 and spaced from each other. The first rotary shaft 111 is connected...

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Abstract

A paper feeding apparatus for an image forming apparatus efficiently aligns the leading edge of a paper as being fed into the image forming apparatus regardless of the thickness of the paper. The paper feeding apparatus includes: first and second feeding roller assemblies rotatably installed on a paper feeding path and at least one tension idle wheel installed in anyone of the first and second feeding roller assemblies. The tension idle wheel is resiliently and elastically deformable in the radial direction thereof when the first and second feeding roller assemblies come into close contact with each other. A leading-edge alignment member is installed downstream of the first and second feeding roller assemblies to align the leading edge of a paper as being fed with respect to the apparatus.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of Korean Patent Application No. 2005-91441, filed Sep. 29, 2005, in the Korean Intellectual Property Office, the disclosure of which is hereby incorporated by reference in its entirety. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to an image forming apparatus. In particular, the invention is directed to a paper feeding apparatus for an image forming apparatus. [0004] 2. Description of the Related Art [0005] As shown in FIG. 1, a conventional image forming apparatus comprises a paper supply unit 1, a pickup unit 2 and a feeding unit 10, in which a paper P in the paper supply unit 1 is picked up by the pickup unit 2 and introduced in the feeding unit 10. The paper P introduced in the feeding unit 10 and an image is formed on one surface thereof while it is transmitted through a developing unit 3 and a transfer unit 4. The image formed on the paper is...

Claims

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Application Information

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IPC IPC(8): B65H5/02B65H5/04
CPCB65H5/062B65H9/06B65H2404/1441B65H2404/11221B65H2404/133B65H9/106
Inventor JEONG, GI-CHEOL
Owner SAMSUNG ELECTRONICS CO LTD
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