Image processing method and image processing apparatus

The image processing method stabilizes print color and enhances accuracy by combining first and second ink information to correct output color space data, addressing the inefficiencies of existing 3D color conversion table methods.

JP2026084259APending Publication Date: 2026-05-21SEIKO EPSON CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
SEIKO EPSON CORP
Filing Date
2024-11-11
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing image processing methods for inkjet printers require the creation of a 3D color conversion table for refill ink, which is memory-intensive and time-consuming, and can lead to changes in printed color and decreased color reproduction accuracy.

Method used

An image processing method that generates output color space data by combining first and second ink color information, including remaining and refill ink amounts, to correct the output color space data without needing a 3D color conversion table for refill ink, using multiple ink types to stabilize print color.

Benefits of technology

This approach suppresses changes in printed color and improves color reproduction accuracy by utilizing multiple ink types, eliminating the need for a 3D color conversion table and reducing memory and time requirements.

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Abstract

Even without a 3D or higher color conversion table compatible with refill inks, it suppresses changes in print color due to ink replenishment. [Solution] An image processing method for generating output color space data dependent on the printing section based on input color space data includes: a first ink color information generation step that generates first ink color information representing the color of the first ink, which is the sum of the first ink and the first refill ink, based on first ink color information representing the color of the first ink, first remaining amount information representing the remaining amount of the first ink, first refill ink color information representing the color of the first refill ink, and first refill amount information representing the amount of the first refill ink; and a correction step that corrects the output color space data so that the color of the first ink is represented by using a plurality of inks corresponding to the plurality of ink color information, based on a plurality of ink color information including the first ink color information and second ink color information representing the color of the second ink.
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