The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2006
Filed:
Mar. 10, 2004
Applicants:
Teruaki Mitsuya, Hitachinaka, JP;
Hiroyuki Mabuchi, Hitachinaka, JP;
Toru Miyasaka, Tsuchiura, JP;
Mieko Ishii, Tsuchiura, JP;
Inventors:
Teruaki Mitsuya, Hitachinaka, JP;
Hiroyuki Mabuchi, Hitachinaka, JP;
Toru Miyasaka, Tsuchiura, JP;
Mieko Ishii, Tsuchiura, JP;
Assignee:
Ricoh Printing Systems, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an electrophotographic recording device, a multicolor toner image is formed by images in each color superimposed on one another. In order to detect image misalignment, image-forming units form a color registration detection pattern, and sensors detect the pattern and output detection signals. A control unit detects the position of the patterns based on only portions of the detection signals corresponding to leading edges of the patterns.