Invention Grant
US08553300B2 Image forming apparatus configured to reduce the number of sheets to be output for gradation correction while maintaining gradation stability
有权
图像形成装置被配置为在保持灰度稳定性的同时减少输出用于灰度校正的片材的数量
- Patent Title: Image forming apparatus configured to reduce the number of sheets to be output for gradation correction while maintaining gradation stability
- Patent Title (中): 图像形成装置被配置为在保持灰度稳定性的同时减少输出用于灰度校正的片材的数量
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Application No.: US13079147Application Date: 2011-04-04
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Publication No.: US08553300B2Publication Date: 2013-10-08
- Inventor: Makoto Oki
- Applicant: Makoto Oki
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Business Technologies, Inc.
- Current Assignee: Konica Minolta Business Technologies, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- Main IPC: H04N1/46
- IPC: H04N1/46
Abstract:
An image forming apparatus includes: an image forming section; a first density sensor; a second density sensor; and a control section to control the image forming section to form a first gradation pattern image including patches having different densities on the image carrier, to execute gradation correction of the image forming section based on a detection result obtained with the first density sensor, to control the image forming section to print a second gradation pattern image including patches having different densities on the sheet, and to execute the gradation correction based on a detection result obtained with the second density sensor, and wherein the control section adds a gradation correction result by the first density sensor to a gradation correction result by the second density sensor according to a predetermined ratio, and executes the gradation correction based on an addition result.
Public/Granted literature
- US20110242609A1 IMAGE FORMING APPARATUS Public/Granted day:2011-10-06
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