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Image forming apparatus, image forming method, and document management system

一种图像、总和的技术，应用在图像通信、应用电荷图形的电记录工艺、应用电荷图形的电记录工艺的设备等方向，能够解决降低人工成本、颜色校正精度不适合、不能充分满足用户等问题，达到节省时间的效果

Inactive Publication Date: 2013-03-13
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the technique described in Japanese Patent Laid-Open No. 2005-321570, the operator needs to designate the color correction accuracy, and thus cannot sufficiently satisfy the user's desire to reduce labor costs
Also, sometimes the accuracy of color correction specified by the operator is not suitable for the job content to be actually used

Method used

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  • Image forming apparatus, image forming method, and document management system
  • Image forming apparatus, image forming method, and document management system
  • Image forming apparatus, image forming method, and document management system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 1 is a block diagram showing the main components of a printer as the image forming apparatus according to the present embodiment.

[0038] The image forming apparatus 10 as a printer is composed of an image forming unit 20 , an image control unit 50 , an operation unit 60 , and a network I / F 70 .

[0039] The image forming unit 20 performs processing of forming a color image on a recording medium such as paper based on image data subjected to image processing. Details of the image forming unit 20 will be described later.

[0040] The image control unit 50 is composed of a CPU 51 , ROM 52 , RAM 53 , HDD 54 , user management unit 55 , image processing unit 56 , operation unit I / F 57 , and printer I / F 58 .

[0041] A processor (CPU) 51 that controls the respective units in an integrated manner reads out control programs stored in the ROM 52 and executes various control processes such as print control.

[0042] The ROM 52 stores various instructions (OS, applicati...

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Abstract

The image forming apparatus includes: a log obtaining unit (S1000) configured to obtain a print log which is an execution history of a print job; a color utilization ratio obtaining unit (S1001) configured to obtain a color utilization ratio which is a ratio of chromatic color material utilization when past print jobs were executed from the print log obtained by the log obtaining unit; a determination unit (S1002-S1004) configured to determine to perform mixed color correction and single color correction when the color utilization ratio obtained by the color utilization ratio obtaining unit is equal to or larger than a threshold value and to perform the single color correction without performing the mixed color correction when the color utilization ratio is smaller than the threshold value; and a correction unit (S1007, 801) configured to perform the correction determined by the determination unit.

Description

technical field [0001] The present invention relates to color correction in an image forming apparatus. Background technique [0002] Color image forming apparatuses such as color printers and color copiers using electrophotographic methods are required to provide higher output image quality. In this case, it is known that the gray scale of the image density and its stability have a significant influence on human determination of whether the image quality is satisfactory. [0003] In this regard, the image density changes according to changes in the various parts of the device due to environmental changes and long-term use, and particularly in the case of a color image forming device using an electrophotographic method, the density changes due to even a slight environmental change, Thus, there is a problem that the color balance is broken. Accordingly, there needs to be a way to maintain a generally constant density gray scale characteristic. Therefore, a gradation correc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/01H04N1/00H04N1/60
CPCH04N1/46H04N1/407
Inventor 鲸井康弘
Owner CANON KK