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:
May. 15, 2007
Filed:
Sep. 17, 2003
Masato Yokoyama, Kanagawa, JP;
Masato Yokoyama, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical scanner includes a light source which emits a light beam, a reflection mirror which has a reflection surface, a first axis parallel to a main-scanning direction, and a second axis along the reflection surface and perpendicular to the first axis, and an optical element which adjusts a position of a scanning line in a sub-scanning direction, the optical element having a beam-incidence surface, a third axis parallel to the main-scanning direction on the beam-incidence surface, and a fourth axis perpendicular to the third axis and along a beam-incidence direction. A first adjustment unit is provided to rotate the reflection mirror around the second axis in order to attain uniformity of a scanning speed. A second adjustment unit is provided to rotate the optical element around the fourth axis in order to correct an inclination of the scanning line to a desired position of the scanning line.