JP-2026074757-A - Method for processing raster data for printing, system for processing raster data for printing, control program, recording medium

Abstract

[Problem] To provide a raster data processing method that can improve printing accuracy when printing using inkjet ink. [Solution] The method for processing raster data for printing includes an acquisition step (S1) for acquiring raster data for printing, and a data editing step (S3) for performing editing processing to modify the raster data. [Selection Diagram] Figure 4

Inventors

• 奥岡 晋一

Assignees

• 株式会社日本触媒

Dates

Publication Date

20260507

Application Date

20241021

Claims (13)

1. Acquisition step to obtain raster data for printing, A data editing step involves performing an editing process to modify the raster data, A method for processing raster data for printing, including the processing of such data.
2. The data editing step includes a detection step to detect areas in the raster data where editing processing will be performed to make changes. The method for processing raster data for printing according to claim 1.
3. The raster data includes one or more specific color data indicating the areas to be coated with a specific color ink when printing using the raster data. The method for processing raster data for printing according to claim 1.
4. In the data editing step, the editing process is performed for each specific color data. The method for processing raster data for printing according to claim 1.
5. The number of bits in the aforementioned raster data is 1 to 8 bits. The method for processing raster data for printing according to claim 1.
6. In the detection step, the density distribution of at least one specific color among the specific color data included in the raster data is further detected. In the data editing step, editing is performed to modify the raster data based on the density distribution. The method for processing raster data for printing according to claim 2.
7. In the acquisition step described above, the print result using the raster data is further acquired, In the data editing step, further processing is performed based on the difference between the characteristics of the region and the characteristics of the region of interest, which is the region in the print result corresponding to that region. The method for processing raster data for printing according to claim 2.
8. The aforementioned raster data is printed by digital printing using inkjet ink. The method for processing raster data for printing according to claim 1.
9. In the aforementioned digital printing, an anchor coat is not used. The method for processing raster data for printing according to claim 8.
10. An acquisition unit for acquiring raster data for printing, A data editing unit performs editing processing to modify the aforementioned raster data, Equipped with, A raster data processing system for printing.
11. The system further includes a detection unit that detects areas in the raster data where editing processing is performed to modify the data. The raster data processing system for printing according to claim 10.
12. A control program for causing a computer to function as a raster data processing system for printing according to claim 10, wherein the computer functions as the acquisition unit, the detection unit, and the data editing unit.
13. A computer-readable recording medium storing the control program described in claim 12.

Description

This invention relates to a method for processing raster data for printing and a system for processing raster data for printing, etc. Large-scale printing using inkjet inks is suitable for printing small quantities of a wide variety of products. In large-scale printing using inkjet inks, the image data used for printing is mainly raster data obtained by processing data created in PDF format with a RIP (Raster Image Processor) (for example, Patent Document 1). Japanese Patent Publication No. 2020-110989 This is a schematic diagram showing a conventional data processing flow and the raster data processing flow of the present invention.This is a schematic diagram showing a raster data processing system according to one embodiment of the present invention.This is a functional block diagram of a raster data processing device according to one embodiment of the present invention.This flowchart shows an example of the data editing process flow of a raster data processing system according to one embodiment of the present invention.This is a functional block diagram of a raster data processing device according to one embodiment of the present invention.This flowchart shows an example of the data editing process flow of a raster data processing system according to one embodiment of the present invention.This flowchart shows an example of a process for detecting an area to be edited by a raster data processing system according to one embodiment of the present invention.This image shows 1-bit raster data for black ink ejection before editing processing, according to Embodiment 1 of the present invention.This image shows 1-bit raster data for cyan ink ejection before editing processing, according to Example 1 of the present invention.This is an editing process flowchart for dealing with blurring in one embodiment of the present invention.This is an image obtained by performing the cropping process according to Example 1 of the present invention.This is an image that has undergone the inversion process according to Embodiment 1 of the present invention.This is an image that has undergone the color selection process according to Example 1 of the present invention.This is an image obtained by performing the concentration separation process according to Example 1 of the present invention.This is an image obtained by performing the contour line creation process according to Embodiment 1 of the present invention.This image shows 1-bit raster data for black ink ejection that has undergone editing processing to address bleeding according to Embodiment 1 of the present invention.This image shows 1-bit raster data for cyan ink ejection that has undergone editing processing to address bleeding according to Example 1 of the present invention.This image shows the 1-bit raster data for black ink ejection after editing.This image shows the 1-bit raster data for cyan ink ejection after editing.This image shows the printing result according to Example 1 of the present invention.This image shows the printing result according to Comparative Example 1 of the present invention.This image shows 1-bit raster data for white ink ejection before editing processing, according to Example 2 of the present invention.This image shows data obtained by converting 1-bit raster data for white ink ejection before editing processing according to Embodiment 2 of the present invention into 2-bit raster data, and converting black pixels into gray pixels.This image shows data obtained by density-dividing the 1-bit raster data for black ink ejection before editing according to Example 2 of the present invention, using the same procedure as step 4 of Example 1, and extracting only the high-density areas.This image shows data where the raster data for white ink ejection (gray background) shown in Figure 23 is overlaid with the black ink ejection raster data, which is extracted only from the high-density range shown in Figure 24.This image shows the printing result according to Example 2 of the present invention.This image shows the printing result according to Comparative Example 2 of the present invention. [Embodiment 1] (Raster data processing system 100) In large-scale printing using inkjet inks, print quality can sometimes be reduced due to ink bleeding, misalignment of print position, etc. This reduction in print quality is particularly noticeable in large-scale printing using water-based inkjet inks. Conventional methods to improve print quality have included using anchor coatings on the substrate and changing the print settings of the printing device. However, while using anchor coatings on the substrate reduces ink bleeding, it can cause streaks in the print, requiring the use of large amounts of ink. Changing the print settings of the printing device requires a human to adjust the settings based on visual inspection and correct misalignment of the print position, thus requiring a high level of skill from the person setting the device. Furthermore, because