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:
Dec. 12, 2000
Filed:
Sep. 09, 1999
Tomohiko Yuge, Mobara, JP;
Futaba Denshi Kogyo Kabushiki Kaisha, Mobara, JP;
Abstract
A head drive mechanism capable of improving color shading in an exposed image due to a variation or nonuniformity in speed of a photosensitive head corresponding to pitches of teeth of a toothed belt. The photosensitive head includes a dot block which is constituted by a luminous dot group constituted of a line of a row A formed of even luminous dots and a line of a row B formed of odd luminous dots. Also, the rows A and B are so arranged that the luminous dots of the row A and those of the row B are offset from each other with an interval Ds being defined therebetween. A final transmission system is constituted of a toothed drive pulley, a toothed driven pulley and a toothed belt. The toothed belt is constructed so as to have tooth pitches Q=2Ds/(2n+1) reduced in terms of a relative travel distance of the head, wherein n is 0 or a positive integer.