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:
Aug. 07, 2012
Filed:
Jun. 28, 2010
Shinji Aoki, Sunto-gun, JP;
Masashi Takahashi, Yokohama, JP;
Masashi Hiroki, Yokohama, JP;
Takeshi Watanabe, Ichikawa, JP;
Shinji Aoki, Sunto-gun, JP;
Masashi Takahashi, Yokohama, JP;
Masashi Hiroki, Yokohama, JP;
Takeshi Watanabe, Ichikawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided a photoreceptor cleanerless image forming apparatus capable of decreasing color mixture or an exposure error due to reverse transfer toner an untransferred toner. An image forming apparatusaccording to the present invention comprises four image forming units, andconfigured to be photoreceptor cleanerless in a 4-drum tandem manner. Each image forming unit includes a photoreceptor, or, a charger, or, an exposure apparatus, or, and a developing apparatus, or. When exposure intensities Iy, Ic, Im, and Ik are assumed for exposure sources of the exposure apparatuses in the image forming units which form yellow, magenta, cyan, and black images, respectively, the exposure intensities are configured to satisfy conditions of Ik≧Ic≧Im≧Iy and Ik>Iy. This decreases an exposure error (image hysteresis) in an image formed on paper.