Printer including unit for detecting color registration error and method of detecting color registration error

A registration error, color technology, applied in the directions of cleaning methods using liquids, cleaning methods and utensils, chemical instruments and methods, etc., can solve problems such as inability to accurately calculate color registration errors

Inactive Publication Date: 2007-07-25
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Color registration error cannot be accurately calculated if the speed of the photosensitive media and transfer media changes during registration mark detection

Method used

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  • Printer including unit for detecting color registration error and method of detecting color registration error
  • Printer including unit for detecting color registration error and method of detecting color registration error
  • Printer including unit for detecting color registration error and method of detecting color registration error

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Embodiment Construction

[0025] Matters defined in the description, such as specific structures and elements, are to help understanding of the present invention. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments disclosed 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 clarity and conciseness.

[0026] FIG. 1 is a block diagram of a printing apparatus according to an exemplary embodiment of the present invention. Referring to Fig. 1, the printing apparatus includes: exposure parts (electrostatic latent image forming units) 10C, 10M, 10Y and 10K; four developing units 20C, 20M, 20Y and 20K, respectively containing cyan (C), magenta (M) , yellow (Y) and black (K) toners; a transfer belt (transfer medium) 30 ; a transfer roller 40 ; and a fuse 50 . The transfer belt 30 is supported by backup rollers 31 , 32 and 33 and wound ...

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PUM

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Abstract

A printing apparatus and method of detecting a color registration error are provided. A detecting unit detects registration marks comprising a plurality of toner marks. The registration marks are formed on a transfer medium to detect color registration errors of color images. Each toner mark of the registration marks includes a first component inclined with respect to a main scanning direction and a sub-scanning direction, a second component spaced apart from the first component in the sub-scanning direction, and inclined with respect to the first component, and a third component parallel to one of the first component and the second component.

Description

[0001] This application claims priority under 35 U.S.C. §119(a) of Korean Patent Application No. 10-2006-0006288 filed with the Korean Intellectual Property Office on January 20, 2006, the entire disclosure of which is hereby incorporated by reference. technical field [0002] The invention relates to a printer comprising a unit for detecting color registration errors and a method for detecting color registration errors. More particularly, the present invention relates to a printer including a unit for detecting color registration errors and a method for detecting color registration errors which are not affected by changes in the speed of a photosensitive medium and a transfer medium. Background technique [0003] Printing apparatuses, such as printers and copiers, print desired images by forming an electrostatic latent image on a photosensitive medium by charging the photosensitive medium with a constant potential by an exposure member. And, a toner image is formed by devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/01G03G15/00
CPCH04N1/506B08B9/027B08B2209/027B08B2203/005
Inventor 安承德
Owner SAMSUNG ELECTRONICS CO LTD
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