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Feeding unit and image forming apparatus having the same

a technology of feeding unit and image forming apparatus, which is applied in the direction of registering device, thin material processing, article separation, etc., can solve the problems of affecting the performance of the reverse roller, the reverse roller tilting away from the feeding roller, etc., and achieves the effect of maintaining a belt tension

Inactive Publication Date: 2010-06-24
S PRINTING SOLUTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0020]The apparatus may further comprise an idle roller suppo

Problems solved by technology

In particular, the shaft of the reverse roller may experience a twisting force when the roller end rotates due to the friction between the reverse roller and the sheets of paper, which may result in the reverse roller tilting away from the feeding roller.
Such difference in the forces may hamper the performance of the reverse roller in effectively sending back the remaining sheets to the print media storage unit.

Method used

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  • Feeding unit and image forming apparatus having the same
  • Feeding unit and image forming apparatus having the same
  • Feeding unit and image forming apparatus having the same

Examples

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Embodiment Construction

[0028]Reference will now be made in detail to several embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. While the embodiments are described with detailed construction and elements to assist in a comprehensive understanding of the various applications and advantages of the embodiments, it should be apparent however that the embodiments can be carried out without those specifically detailed particulars. Also, well-known functions or constructions will not be described in detail so as to avoid obscuring the description with unnecessary detail. It should be also noted that in the drawings, the dimensions of the features are not intended to be to true scale and may be exaggerated for the sake of allowing greater understanding.

[0029]As shown in FIG. 1, an image forming apparatus 100 in accordance with an embodiment of the present disclosure may include a main body 10 defining an overall external ...

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PUM

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Abstract

Disclosed herein are a printing media feeding unit and an image forming apparatus having the same. The feeding unit may include a feeding roller and a reverse roller arranged parallel to, and to opposingly face, each other. The feeding roller may be supported on a feeding shaft so as to rotate together with the feeding shaft. The reverse shaft may be supported on a reverse shaft so as to rotate together with the reverse shaft. The reverse shaft is arranged to be movable along the radial direction in compensation of the radial movement of the reverse roller with respect to the feed roller that may result from the friction between printing media and the reverse roller so as to improve the performance of the reverse roller in returning of extraneous sheets of printing media to prevent simultaneous feeding of multiple sheets of printing media.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Korean Patent Application No. 2008-0129824, filed on Dec. 19, 2008 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.TECHNICAL FIELD[0002]The present disclosure relates generally to a feeding unit that feeds one sheet of paper at a time, and an image forming apparatus having the same.BACKGROUND OF RELATED ART[0003]Image forming apparatuses can be used to print an image on a printing medium, such as paper, for example, based on input image signals. Examples of image forming apparatuses include printers, copiers, facsimiles and so-called multifunctional apparatuses that combine some of the functionalities of the aforementioned apparatuses.[0004]An image forming apparatus typically includes a main body or frame that defines the overall external appearance of the image forming apparatus. Various components and devices that are employed ...

Claims

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Application Information

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IPC IPC(8): B65H3/06B65H5/06
CPCB65H5/062B65H5/38B65H9/008B65H2404/6111B65H2403/42B65H2404/1442B65H2403/25
Inventor YOUN, CHANG MIN
Owner S PRINTING SOLUTION CO LTD