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Ink set, printer, and printing method

A technology of ink set and printer, applied in the field of ink set

Pending Publication Date: 2021-09-07
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this head has the side effect of making it easier for ink drops to land in the wrong place

Method used

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  • Ink set, printer, and printing method
  • Ink set, printer, and printing method
  • Ink set, printer, and printing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0154]

[0155] A cyan pigment dispersion was obtained in the same manner as described in the subsection "Method A for [Pigment Surface Improvement Treatment]" in Japanese Unexamined Patent Application Publication No. 2012-207202. Specifically, C.I. Pigment Blue 15:3 (product name: CHROMOFINE BLUE, available from Dainichiseika Color & Chemicals Mfg. Co., Ltd.) was mixed using a Silverson mixer (6,000 rpm) in an environment at room temperature (25° C.) ( 20 g), a compound represented by the following structural formula (1) (20 mmol), and ion-exchanged water (200 mL), to obtain a slurry. When the pH of the obtained slurry was higher than 4, nitric acid (20 mmol) was added to the slurry. After 30 minutes, sodium nitrite (20 mmol) dissolved in a small amount of ion-exchanged water was slowly added to the slurry. Then, the slurry was heated to 60° C. while stirring and allowed to react for 1 hour to obtain the improved pigment, namely the above-mentioned C.I. Pigment Blue 15...

Embodiment 2

[0159]

[0160] A magenta pigment dispersion having a pigment concentration of 15% by mass was produced in the same manner as in Pigment Dispersion Production Example 1, except that, unlike Pigment Dispersion Production Example 1, C.I. Pigment Blue 15:3 (product name : CHROMOFINE BLUE, available from Dainichiseika Color & Chemicals Mfg. Co., Ltd.) (20 g) was replaced with C.I. Pigment Red 122 (product name: TONER MAGENTA EO02, available from Clariant Japan K.K.) (20 g).

Embodiment 3

[0162]

[0163] A yellow pigment dispersion having a pigment concentration of 15% by mass was produced in the same manner as in Pigment Dispersion Production Example 1, except that, unlike Pigment Dispersion Production Example 1, C.I. Pigment Blue 15:3 (product name: CHROMOFINE BLUE, available from Dainichiseika Color & Chemicals Mfg. Co., Ltd.) (20 g) was replaced with C.I. Pigment Yellow 74 (product name: FAST YELLOW 531, available from Dainichiseika Color & Chemicals Mfg. Co., Ltd.) (20 g).

[0164] (Pigment dispersion production embodiment 4)

[0165]

[0166] Produce black pigment dispersion (15% by mass of pigment solid concentration) in the same manner as Pigment Dispersion Production Example 1, except that, unlike Pigment Dispersion Production Example 1, Pigment Blue 15:3 (product name : LIONOLBLUE FG-7351, available from Tokyo Ink Co., Ltd.) was replaced with a carbon black pigment (product name: MONARCH 800, available from Cabot Corporation).

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Abstract

Provided is an ink set including: an ink containing a cyan pigment; an ink containing a magenta pigment; and an ink containing a yellow pigment, wherein the proportion of the cyan pigment is 0.70% by mass or greater but 1.40% by mass or less, and the proportion of the magenta pigment and the proportion of the yellow pigment are both higher than the proportion of the cyan pigment.

Description

technical field [0001] The present disclosure relates to ink sets, printers and printing methods. Background technique [0002] Compared with other printing methods, the inkjet printing method has a simple process, is easily adaptable to full-color operation, and can provide high-resolution images even when used on simple-configured equipment. These advantages extend the inkjet printing method to personal and office use as well as industrial printing. [0003] In the field of industrial printing, high productivity is required. In the field of sign graphics such as signs displayed indoors and outdoors, wide-format inkjet printers have been introduced. The need to increase the productivity of wide format inkjet printers is high. A common wide-format inkjet printer employs a multi-path system that scans the head in the width direction of the medium (main scanning direction), and conveys the medium perpendicular to the scanning direction of the head (sub-scanning direction). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/40
CPCC09D11/40
Inventor 坂口裕美佐佐木逸郎田中彩加志村直人堀江舜介后藤宽中村悠太
Owner RICOH KK