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:
Nov. 15, 2005
Filed:
Nov. 04, 2003
Hideki Ishida, Osaka, JP;
Eiji Tatsumi, Osaka, JP;
Hideki Ishida, Osaka, JP;
Eiji Tatsumi, Osaka, JP;
Kyocera Mita Corporation, Osaka, JP;
Abstract
An image forming apparatus is provided that is capable of forming an image with excellent gradation quality without affected by variations in the sensitivity characteristic of the photoreceptor and the light quantity characteristic of the LED print head among individual products. A highest gradation appropriate exposure amount appropriate for the highest gradation is calculated from the sensitivity characteristic of the photoreceptor and the light quantity characteristic of the LED print head. Then, based on the highest gradation appropriate exposure amount, an appropriate lighting time of the LEDs that is appropriate for each gradation is calculated so that the increment of the exposure amount between the gradations including the first gradation, and the lighting times of the gradations are set based on the appropriate lighting times. Then, the LEDs are lit for the lighting time set in accordance with the gradation of the inputted image data.