Invention Grant
US07751155B2 Image processing method, recorder, ink jet recorder, printer driver, image processor, imaging system and imaging method
失效
图像处理方法，记录仪，喷墨记录仪，打印机驱动程序，图像处理器，成像系统和成像方法
- Patent Title: Image processing method, recorder, ink jet recorder, printer driver, image processor, imaging system and imaging method
- Patent Title (中): 图像处理方法，记录仪，喷墨记录仪，打印机驱动程序，图像处理器，成像系统和成像方法
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Application No.: US10528716Application Date: 2003-09-18
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Publication No.: US07751155B2Publication Date: 2010-07-06
- Inventor: Takashi Kimura , Masakazu Yoshida , Masanori Hirano , Toshihito Kamei , Mikio Ohashi , Taeko Takahashi
- Applicant: Takashi Kimura , Masakazu Yoshida , Masanori Hirano , Toshihito Kamei , Mikio Ohashi , Taeko Takahashi
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2002-273968 20020919; JP2003-046772 20030225
- International Application: PCT/JP03/11917 WO 20030918
- International Announcement: WO2004/026584 WO 20040401
- Main IPC: G11B5/127
- IPC: G11B5/127 ; B41J29/38
Abstract:
In an ink-jet printing device which has an ink-jet recording head in which a plurality of nozzles are formed, and forms an image based on multi-level image data, a gamma correction parameter is selected according to discharging characteristics of the recording head to an input gradation level or according to lightness characteristics of a printed image to an input gradation level, and an image is formed based on the selected gamma correction parameter. For example, even when there is a variation in lightness characteristics of recording heads as in FIG. 9, an optimal gamma correction parameter is selected for each recording head and the image is formed. Thus, a constant image quality is obtained even if the recording heads are exchanged.
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