Invention Grant
US08964246B2 Image forming apparatus, image forming method, image density measuring apparatus, and image density measuring method
有权
图像形成装置，图像形成方法，图像浓度测量装置和图像浓度测量方法
- Patent Title: Image forming apparatus, image forming method, image density measuring apparatus, and image density measuring method
- Patent Title (中): 图像形成装置，图像形成方法，图像浓度测量装置和图像浓度测量方法
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Application No.: US13221672Application Date: 2011-08-30
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Publication No.: US08964246B2Publication Date: 2015-02-24
- Inventor: Kazuomi Sakatani
- Applicant: Kazuomi Sakatani
- Applicant Address: JP Chiyoda-Ku, Tokyo
- Assignee: Konica Minolta, Inc
- Current Assignee: Konica Minolta, Inc
- Current Assignee Address: JP Chiyoda-Ku, Tokyo
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2010-193148 20100831; JP2010-193150 20100831
- Main IPC: H04N1/60
- IPC: H04N1/60 ; G03G15/00 ; G09G5/02 ; B41J29/393 ; H04N9/04 ; H04N1/00 ; G03G15/01
Abstract:
An image forming apparatus includes a control section extracting a color composition of each color ranging from a first to an nth color from input image data, on the color composition of an mth color, the m being 1 to n−1, performing a first and a second gamma corrections correcting a gradation of the color composition respectively based on a gamma curve for the mth color to obtain a first corrected gradation value, and based on a gamma curve for an (m+1)th color to obtain a second corrected gradation value, and interpolating the first and the second corrected gradation values to determine an output value for the color composition, on the color composition of the nth color, correcting a gradation of the color composition based on a gamma curve for the nth color to obtain an output value for the color composition.
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