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. 15, 2013
Filed:
Sep. 29, 2010
Takeshi Sowa, Nagano, JP;
Ken Ikuma, Nagano, JP;
Ryuta Koizumi, Nagano, JP;
Nozomu Inoue, Nagano, JP;
Takeshi Sowa, Nagano, JP;
Ken Ikuma, Nagano, JP;
Ryuta Koizumi, Nagano, JP;
Nozomu Inoue, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Disclosed is an exposure head including a light emitting element array including light emitting elements disposed in a first direction, a light blocking member including an aperture stop through which lights emitted from the light emitting elements pass, and an image forming optical system that makes an image by using the lights having passed through the light blocking member. An absolute value of a magnification in the first direction of the image forming optical system is equal to or more than 0.7 times and is equal to or less than 0.8 times.