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. 01, 2001
Filed:
Sep. 09, 1999
Toshiaki Nakahara, Mobara, JP;
Tomohiko Yuge, Mobara, JP;
Hideo Kato, Mobara, JP;
Yuuichi Kimura, Mobara, JP;
Futaba Denshi Kogyo Kabushiki Kaisha, Mobara, JP;
Abstract
An optical printer head capable of preventing catching between a filter holder and a luminous tube to prevent production of dust and attaining replacement of the luminous tube without exposing filters to an ambient atmosphere. A filter holder is arranged separately from a light source and an selfoc lens array, to thereby prevent production of dust from the filter holder due to contact of the filter holder with the light source and selfoc lens array. A base is arranged so as to receive only the filter holder therein, to thereby prevent the filters held on the filter holder from being exposed to an ambient atmosphere, resulting in dust being kept from adhering to the filters. A pair of light passages are formed on a light path and closed with a light-permeable cover to sealedly close the base, to thereby prevent dust from intruding into the base during replacement of the light source.