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Data processing method, data processing apparatus, mask generation method, and mask pattern

A technology of mask pattern and manufacturing method, which is applied in the direction of electrical digital data processing, printing device, data conversion, etc., and can solve the problems of poor dispersion and so on

Inactive Publication Date: 2009-07-15
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In the masks of Patent Documents 1 and 2, which do not carry out mask design having such a correlation between different colors, the arrangement of recording allowable pixels when the masks of different colors overlap is poor, and cannot be achieved. Avoid adjacency of points in an image (intermediate image) in the middle of division recording or overlapping of points

Method used

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  • Data processing method, data processing apparatus, mask generation method, and mask pattern
  • Data processing method, data processing apparatus, mask generation method, and mask pattern
  • Data processing method, data processing apparatus, mask generation method, and mask pattern

Examples

Experimental program
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Effect test

Embodiment 1

[0152] [Example 1: 100% equal mask for 2-path recording]

[0153] (1) Outline of this embodiment

[0154] This embodiment relates to two-path multi-path recording in which an image is completed by two scans for each ink of cyan (C), magenta (M), yellow (Y), and black (K). In addition, for each ink color used in this 2-pass recording, not only the mask used for each of multiple (2 times in this embodiment) scans (hereinafter referred to as "one plane") mask) is well dispersed, and a mask combining any number of faces of these masks is also well dispersed.

[0155] Figure 4 It is a diagram schematically showing a recording head, a mask pattern, and a recording medium for explaining 2-path recording. In addition, in this figure, in order to simplify illustration and description, a case where two-pass recording is performed in three colors of cyan, magenta, and yellow will be described. The same applies to the masks described below.

[0156] The nozzle groups of the respecti...

Embodiment 2

[0272] [Example 2: 100% equal mask for 4-path recording]

[0273] (1) Outline of this embodiment

[0274] This embodiment relates to 4-pass multi-path recording in which an image is completed in 4 scans for each of cyan (C), magenta (M), yellow (Y), and black (K). Then, for each of the ink colors used in 4-pass recording, not only the masks used for each of the multiple (4 in this embodiment) scans are well dispersed, but also arbitrarily many faces of these masks are combined. The mask is also well dispersed.

[0275] Hereinafter, for simplicity of illustration and description, a case where 4-path recording is performed using three colors of cyan, magenta, and yellow will be described.

[0276] The nozzle groups of the respective colors of cyan, magenta, and yellow are divided into four groups of the first group to the fourth group, and each group includes 128 nozzles. Each group corresponds to the mask pattern (C1, C2, C3, C4, M1, M2, M3, M4, Y1, Y2, Y3, Y4) of this embod...

Embodiment 3

[0324] [Example 3: 100% gradation mask for 2-path recording]

[0325] This embodiment relates to a so-called gradation mask. A gradation mask is known from Patent Document 3, for example. The gradation mask refers to a mask in which the recording rate is different according to nozzle positions such that the recording rate is low at the ends of the nozzle row and high at the center. According to this mask, the frequency of ejection from the end nozzles, which tends to cause damage at the boundary of the recording area of ​​each path during multi-path recording, is relatively reduced, and an effect of improving image quality can be obtained.

[0326] Here, the "recording rate" of the above-mentioned mask pattern refers to the ratio of the number of recordable pixels to the total number of pixels (the sum of recordable pixels and non-recordable pixels) contained in a certain area in the mask pattern. For example, the recording rate of a mask pattern corresponding to a single no...

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Abstract

The present invention provides a mask used in the divisional recording of an image by multiple scans using inks of different colors, the mask can suppress the generation of particles in the middle of recording, and can reduce the deterioration of image quality caused by granulation . Among the recording permitted pixels for which the sum of the repulsive potential energy is calculated, for example, when the sum of the repulsive potential energy of the recording permitted pixel (Do) is the largest, the change in the repulsive potential energy before and after its movement is obtained, and the recording permitted pixel (Do) is moved to At the pixel where the sum of the repulsive potential energy before and after the movement is the lowest. By performing such a process in a loop, the total energy of the entire surface can be reduced, and it is arranged so that, in the overlapping of masks on each surface, the pixel distribution for recording is allowed to have few low-frequency components and are well dispersed.

Description

technical field [0001] The present invention relates to a data processing method, a data processing device, a mask (mask) manufacturing method, and a mask pattern. Specifically, it relates to the divisional formation of ink dots constituting a recording image by scanning a recording head a plurality of times. The mask processing and even the mask pattern for generating the dot recording data at the time. Background technique [0002] In inkjet printers, a so-called multipath recording method is widely used. The multi-path recording method is a method in which ink dots constituting an image of an arbitrary region of an image are formed in divisions by scanning a recording head a plurality of times. According to this aspect, it is possible to disperse density smearing due to variations in discharge performance such as the ink discharge direction of each nozzle (or even the discharge port) that discharges ink, and density blur due to transport errors of recording paper, etc., ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/01B41J5/30G06F3/12G06F5/00H04N1/405H04N1/52
CPCY02B60/1271Y02D10/00
Inventor 丸本义朋
Owner CANON KK