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Process for producing coated sheet

A manufacturing method and coating technology, applied in the direction of copying/marking method, device for coating liquid on the surface, coating, etc., can solve the problems such as difficult to increase the viscosity of the coating, easy to solidify the surface, and heavy equipment burden, etc., to achieve high Ink absorption, high print density, high image quality effect

Inactive Publication Date: 2007-03-14
OJI PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the paint is cooled and dried after coating, it is necessary to install a cooling zone before the dryer, and the burden on the equipment is very heavy
Moreover, even if cooling is carried out in the cooling zone, the efficiency is poor. Not only is it difficult for the coating to increase viscosity immediately, but also the surface is easy to solidify, which is not good for crack control.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0164]

[0165] 100 parts of silica fine particles A were mixed with 20 parts of a temperature-sensitive polymer compound (produced by Asahi Kasei Co., Ltd., ALB-221, temperature-sensitive point: 24°C) that shows hydrophilicity when the temperature is lower than the temperature-sensitive point to prepare 9 % Aqueous solution.

[0166]

[0167] On paper support (209g / m 2 , Tightness: 0.9g / cm 3 ) Is coated with water at 2°C, followed by coating liquid A at 40°C, and the coating amount is 15g / m 2 , And dried to obtain an inkjet recording sheet.

Embodiment 2

[0169]

[0170] 20 parts of polyvinyl alcohol (manufactured by Kurara Co., Ltd., trade name: PVA-140H, polymerization degree: 4000, saponification degree: 99% or more) was mixed with 100 parts of silica fine particles B to prepare a 10% aqueous solution.

[0171]

[0172] On paper support (209g / m 2 , Tightness: 0.9g / cm 3 ), in the Wet onWet state, apply the coating solution B at a temperature of 2°C to a coating amount of 10g / m 2 And the coating amount of 40℃ coating solution A is 7g / m 2 Coating and drying were performed to obtain an inkjet recording sheet.

Embodiment 3

[0174] On double-sided polyethylene laminated paper (commonly known as RC paper), the coating amount of coating solution B is 10g / m 2 In the form of coating and drying, the undercoat layer is formed. Next, an aqueous solution containing 3% polyaluminum chloride at a temperature of 2°C was coated on the coating layer, and then the coating solution A at 40°C was applied with a coating amount of 7g / m 2 Coating and drying were performed to obtain an inkjet recording sheet.

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Abstract

A process for producing a coated sheet, in which there can be formed a coating layer simultaneously attaining an ink absorption rate and coating film cracking control suitable for use as an inkjet recording layer, in particular, there can be realized high gloss, high ink absorption, high printing density and high image quality required for use as a glossy inkjet recording sheet. There is provided a process for producing a coated sheet, comprising coating a support, or undercoat layer superimposed on the support, with a coating liquid containing a thermosensitive polymeric compound reversibly exhibiting hydrophilicity and hydrophobicity depending on temperature change, characterized in that the coating liquid containing a thermosensitive polymeric compound is applied concurrently with application of a treatment liquid whose temperature is in the range in which the thermosensitive polymeric compound exhibits hydrophilicity, or after the application of the treatment liquid without drying after the application.

Description

Technical field [0001] The present invention relates to a method for manufacturing a coated sheet, in particular to a method for manufacturing a coated sheet for inkjet recording. By using the coating sheet manufacturing method of the present invention, a coating with better ink absorption speed and coating film crack control of the inkjet recording layer can be formed, and in particular, the high gloss and high ink absorption required for glossy inkjet recording sheets can be realized Performance, high print density, high image quality (circularity of dots). [0002] This application claims priority on the basis of Japanese Patent Application No. 2004-048905 filed on February 25, 2004, and its content is cited in this specification. Background technique [0003] For the inkjet recording method in which water-based ink is ejected from a fine nozzle to the inkjet recording sheet to form an image on the surface of the inkjet recording sheet, the recording has low noise, easy format...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/04B05D1/36B41J2/01B41M5/00B05D5/08B41M5/52
CPCB05D5/04B41M5/52B05D5/08
Inventor 北村龙若田员义田井靖人平木纪子浅野晋一
Owner OJI PAPER CO LTD
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