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:
Jun. 01, 1999
Filed:
Dec. 31, 1997
Yoshiyuki Araki, Saitama-ken, JP;
Masatoshi Takano, Saitama-ken, JP;
Shinji Kikuchi, Tokyo, JP;
Tsutomu Sato, Tokyo, JP;
Eiji Takasugi, Saitama-ken, JP;
Takashi Sasaki, Nagano-ken, JP;
Mitsunori Iima, Saitama-ken, JP;
Takashi Iizuka, Saitama-ken, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
Disclosed is a scanning apparatus having a cascade scanning optical system. The scanning apparatus includes: a first laser scanning optical system for deflecting a first scanning laser beam to scan a scanning surface to generate a first scanning line; a second laser scanning optical system for deflecting a second scanning laser beam to scan the scanning surface to generate a second scanning line, wherein the first and second laser scanning optical systems are arranged so as to align the first scanning line with the second scanning line in a main scanning direction to form a single scanning line, with opposing ends of the first and second scanning lines overlapping each other by a predetermined amount; and a device for delaying the commencement of the writing of each scanning line made by the second laser scanning optical system with respect to the commencement of the writing of each scanning line made by the first laser scanning optical system so as to align the first scanning line with the second scanning line at a point of contact therebetween in the main scanning direction without the first scanning line overlapping the second scanning line.