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:
Jul. 31, 2007
Filed:
Mar. 18, 2005
Mitsuru Tokuyama, Kyoto, JP;
Toshiaki Ino, Kyoto, JP;
Kiyofumi Morimoto, Nara, JP;
Takashi Kitagawa, Nara, JP;
Yasuhiro Nishimura, Nara, JP;
Mitsuru Tokuyama, Kyoto, JP;
Toshiaki Ino, Kyoto, JP;
Kiyofumi Morimoto, Nara, JP;
Takashi Kitagawa, Nara, JP;
Yasuhiro Nishimura, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
One embodiment of an image correction method is an image correction method for correcting image forming condition(s). The image correction method includes forming, on photoreceptor(s), correction test pattern(s) having continuously varying toner gradation; wherein a single correction test pattern in which density is varied in sequence from high to low in paper transport direction(s) is formed as a result of controlling exposing unit laser power(s) while photoreceptor charging potential(s) is/are held constant, or while develop bias(es) is/are held constant, or while photoreceptor charging potential(s) is/are held constant and develop bias(es) is/are held constant. In such case, total length(s) in paper transport direction(s) of such correction test pattern(s) is/are less than or equal to circumference(s) of photoreceptor(s).