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Color value correction control method, recording medium, and image forming apparatus

A technology for correction control and color value, applied in image communication, electrical components, etc., to solve problems such as mixed reflected light output

Inactive Publication Date: 2018-12-07
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in reality, in addition to the reflected light from the color patch of the measurement object, the output that is mixed with the reflected light from the surrounding color patches due to diffuse reflection is measured.

Method used

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  • Color value correction control method, recording medium, and image forming apparatus
  • Color value correction control method, recording medium, and image forming apparatus
  • Color value correction control method, recording medium, and image forming apparatus

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Embodiment

[0093] In order to further describe the above-mentioned embodiments of the present invention in detail, regarding the color value correction control method, the color value correction control program, and the image forming apparatus according to an embodiment of the present invention, refer to Figure 1 to Figure 11 Be explained. figure 1 as well as figure 2 is a schematic diagram showing the structure of the printing system of this embodiment, image 3 is a block diagram showing the configuration of the client device. also, Figure 4 is an external view of the image forming apparatus of this embodiment, Figure 5 is a block diagram showing the configuration of the image forming apparatus, Figure 6 is a block diagram showing data stored in the storage unit of the image forming apparatus. also, Figure 7 to Figure 10 is a flowchart representing the operation of the image forming apparatus, Figure 11 This is an example of the color verification chart of this embodiment...

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Abstract

The invention provides a color value correction control method, a color value correction control program and an image forming apparatus. The color value correction control method uses a printing system including: a printer that prints a chart, a scanner that acquires an RGB value and a colorimeter that acquires a color value. The method comprises the steps of: when estimating a color value using the RGB value obtained by measuring the chart and a scanner profile and calculating a correction amount of the color value based on the color value obtained by measuring the chart and the estimated color value, creating a specific chart having a first patch group for acquiring an RGB value and with a first size and a second patch group for acquiring a color value and with a second size, with the first patch group containing a specific patch with the same CYMK value as a CYMK value of each patch of the second patch group, estimating the color value by using an RGB value obtained by measuring thespecific patch in the first patch group and the scanner profile, and calculating the correction amount of the color value based on a color value obtained by measuring each patch of the second patch group and the estimated color value.

Description

technical field [0001] The present invention relates to a color value correction control method, a color value correction control program, and an image forming apparatus, and in particular, to a color value correction control method for calculating a correction amount for correcting a color value in consideration of a speckle level, a color value correction control A program and an image forming apparatus including a colorimeter for measuring color values. Background technique [0002] Color verification work is performed to confirm how much the colors specified by various color certification standards can be reproduced in the image forming apparatus. This color verification uses a spectrophotometer to perform color measurement on a color evaluation chart that is converted and printed using a CMA (Color Management System), and the color value obtained by color measurement is compared with the color value specified in the color certification standard. The color value is comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/60
CPCH04N1/6008H04N1/6019H04N1/6033H04N1/6041H04N1/6075
Inventor 黑岩友子
Owner KONICA MINOLTA INC
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