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:
Aug. 26, 2014
Filed:
Feb. 27, 2006
Kazuya Utsugi, Chiba, JP;
Toshikazu Suzuki, Chiba, JP;
Kazuya Utsugi, Chiba, JP;
Toshikazu Suzuki, Chiba, JP;
Seiko I Infotech Inc., , JP;
Abstract
An optical printer head has an array of lenses that project light emitted by an array of LEDs onto a charged photosensitive drum to form a latent image on the drum surface. A resin film adhered to the exposed surfaces of the lenses prevents chemical reaction between nitric acid, formed as a consequence of ozone produced during electric charging of the photosensitive drum, and alkali components on the surfaces of the lenses thereby preventing clouding of the lens surfaces and dimming of the projected light. The resin film has a thickness of 10 to 100 microns and may be formed of polyvinyl chloride, polyethylene terephthalate or polymethyl meta acrylate.