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:
Feb. 21, 2006
Filed:
Jul. 28, 1999
Shinya Kobayashi, Mito, JP;
Kunio Satoh, Hitachi, JP;
Susumu Edo, Hitachi, JP;
Seiji Maruo, Chitose, JP;
Takao Kumasaka, Takahagi, JP;
Atsushi Onose, Hitachi, JP;
Shinya Kobayashi, Mito, JP;
Kunio Satoh, Hitachi, JP;
Susumu Edo, Hitachi, JP;
Seiji Maruo, Chitose, JP;
Takao Kumasaka, Takahagi, JP;
Atsushi Onose, Hitachi, JP;
Ricoh Printing Systems, Ltd., Tokyo, JP;
Abstract
A multi-beam image recording device is capable of recording high-quality high-resolution images without positional errors by exposing test patterns for measuring positional errors of beam spots of each laser beam in main and subsidiary scanning directions, calculating the positional errors of beam spots using a correcting device, controlling the quantity of exposure according to the result of calculation, and thus correcting the positional errors in main and subsidiary scanning directions.