Reception device and reception method

A recording medium, inkjet recording ink technology, applied in the direction of copying/marking method, ink, printing, etc., can solve the problem of poor inkjet stability, difficult ink with high viscosity reliability and ease of operation, maintenance of inkjet equipment Problems such as equipment damage

Active Publication Date: 2009-09-23
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ink of Patent Document 5 has good drying properties and exhibits sure high-speed printing suitability and high printing quality on plain paper, but the ink dries so quickly that inkjet stability is poor, and further causes troubles such as for inkjet Breakage of the maintenance equipment (wipe cleaner, ink sweeping part, etc.) of the equipment due to the adhesion of waste ink in it
As mentioned above, in order to ensure high-speed printing and high printing quality, it is necessary to use inks with high viscosity; however, at present, it seems difficult to make inks with high viscosity to ensure reliability and easy handling

Method used

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  • Reception device and reception method

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0361] -Preparation of water-soluble polymer compound aqueous solution A-

[0362] α-olefin-maleic anhydride copolymer represented by the following structural formula (II) (T-YP112, manufactured by SEIKO PMC Corporation, its olefin chain (R): 20 to 24 carbon atoms, acid value 190 mgKOH / g and weight The average molecular weight is 10,000): 10.0 parts by mass

[0363] Structural formula (II)

[0364] In the structural formula (II), R represents an alkyl group. "n" represents an integer of 30 to 100.

[0365] ●Standard LiOH aqueous solution (the amount of acid value is 1.2 times of the α-olefin-maleic anhydride copolymer represented by structural formula (II): 17.34 parts by mass

[0366] ●Ion-exchanged water: 72.66 parts by mass

[0367] [278] Subsequently, the mixture is heated and stirred with a stirrer to dissolve the α-olefin-maleic anhydride copolymer shown in the structural formula (II), and filter out a very small amount of undissolved matter through a filter with a...

preparation Embodiment 2

[0369] -Preparation of Surface-treated Black Pigment Dispersion Solution-

[0370] [279] Add 90g carbon black in 3,000ml 2.5N sodium sulfate solution, the carbon black has 150m 2 The specific surface area of ​​CTAB / g and the oil absorption of DBP 100mL / 100g; then, at a temperature of 60°C, the mixture was stirred at a rotation speed of 300rpm and allowed to react for 10 hours, whereby the carbon black was oxidized. The reaction solution was filtered, and the filtered carbon black was then neutralized with sodium hydroxide solution and subjected to ultrafiltration.

[0371] [280] The obtained carbon black was washed with water, dried, and dispersed in purified water so that the solid content was 30% by mass, and the mixture was sufficiently stirred to obtain a black pigment dispersion solution. Measure the average particle diameter (D) of the pigment dispersed phase in this black pigment dispersion solution 50 ) is 103nm. In addition, the average particle diameter (D 50 ). ...

preparation Embodiment 3

[0373] -Preparation of polymer fine particle dispersion solution containing magenta pigment-

[0374]

[0375] [281] The gas in a 1L flask equipped with a mechanical stirrer, a thermometer, a nitrogen introduction tube, a reflux tube and a dropping funnel was fully replaced with nitrogen, and then 11.2g styrene, 2.8g acrylic acid, 12.0g lauryl methacrylate, 4.0 g of polyethylene glycol methacrylate, 4.0 g of styrene macromonomer and 0.4 g of mercaptoethanol were mixed together and heated to 65°C.

[0376][282] Subsequently, will include 100.8g styrene, 25.2g acrylic acid, 108.0g lauryl methacrylate, 36.0g polyethylene glycol methacrylate, 60.0g hydroxyethyl methacrylate, 36.0g styrene macromolecule A mixed solution of the monomer, 3.6 g of mercaptoethanol, 2.4 g of azobismethyl valeronitrile and 18 g of methyl ethyl ketone was added dropwise into the flask for 2.5 hr. Thereafter, a mixed solution including 0.8 g of azobismethylvaleronitrile and 18 g of methyl ethyl ketone w...

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Abstract

An ink-jet recording ink including a colorant dispersible in water, a water-soluble organic solvent used as a wetting agent, a surfactant, a penetrant, a water-dispersible resin, and water, wherein when 2.5g of the ink is weighed, placed in a glass Petri dish having a diameter of 33mm and stored for 24hr at a temperature of 5O DEG C+O.5 DEG C and a humidity of 12%+-5%, the evaporation rate of a solvent (water + water-soluble organic solvent) in the ink is 50% by weight or more, and an ink residue has a viscosity of 20,00OmPa-S or greater, and wherein by storing the ink residue for 6hr at a temperature of 23 DEG C+-0.5 DEG C and a high humidity of 95%+-3% to allow it to absorb moisture, the amount of moisture contained in the ink residue becomes 30% by weight to 40% by weight, in which case the ink residue has a viscosity of less than 500mPa*s.

Description

technical field [0001] [001] The present invention relates to a recording ink, an ink medium unit, an ink cartridge, an inkjet recording method, an inkjet recording apparatus, and an ink recorded matter. Specifically, the present invention relates to: an ink which is excellent in image quality to plain paper, suitability for high-speed printing, storage stability, and inkjet stability, and which is not harmful to maintenance equipment of inkjet equipment; an ink cartridge; and A recording method using the ink, a recording apparatus, and an ink-recorded matter. Background technique [0002] [002] In recent years, inkjet printers have rapidly become commonplace items due to the ability to print on plain paper, easy colorization, small and inexpensive inkjet printers, and low operating costs. Properties generally required for inkjet recording inks are exemplified as follows: color tone, image density, ink bleeding, etc., to achieve high image quality; dissolution / dispersion st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00B41M5/50B41M5/52B41J2/01B41M5/00C09C1/00C09D11/322C09D11/326C09D11/328C09D11/38
CPCB41M5/0023C09D11/40C09C1/565C09C1/56C01P2006/22C09D11/38
Inventor 后藤宽永井希世文有贺保小谷野正行
Owner RICOH KK
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