Recording apparatus and recording method

Patent metadata

Field	Value
Publication number	US-9469099-B2
Application number	US-201514608236-A
Country	US
Kind code	B2
Filing date	Jan 29, 2015
Priority date	Jul 25, 2014
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

There is provided a recording apparatus equipped with an ejection head that ejects an ink to a surface of the undercoat layer of an impermeable recording medium that has, on at least one surface thereof, an undercoat layer containing a polymeric compound selected from the group consisting of polyurethane, polyester, polyvinyl chloride, and polyolefin, wherein the ink contains a coloring agent, a polymer particle, water, and a water-soluble organic solvent and has a static surface tension of less than 30 mN/m and, when examined for dynamic surface tension by a maximum bubble pressure method, has a width of variation in dynamic surface tension for the period from 1 msec after to 1 sec after of from 0.2 mN/m to 3.0 mN/m.

First claim

What is claimed is:

1. A recording apparatus equipped with an ejection head that ejects an ink to a surface of the undercoat layer of an impermeable recording medium that has, on at least one surface thereof, an undercoat layer comprising a polymeric compound selected from the group consisting of polyurethane, polyester, polyvinyl chloride, and polyolefin,
wherein the ink comprises a coloring agent, a polymer particle, water, and a water-soluble organic solvent and has a static surface tension of less than 30 mN/m and, when examined for dynamic surface tension by a maximum bubble pressure method, has a width of variation in dynamic surface tension of from 0.2 to 3.0 mN/m, the width of variation in dynamic surface tension being a difference between the dynamic surface tension measured at 1 msec after and the dynamic surface tension measured at 1 sec after a new interface was formed at the end of a capillary and when a maximum bubble pressure is reached.

2. The recording apparatus according to claim 1 ,
wherein the undercoat layer in the impermeable recording medium further contains a surfactant selected from the group consisting of a silicone surfactant and a fluorochemical surfactant.

3. The recording apparatus according to claim 1 ,
wherein the undercoat layer in the impermeable recording medium further contains a cationic compound or contains a cationic polymeric compound as the polymeric compound.

4. The recording apparatus according to claim 1 , which is further equipped with a drying device that dries the ink ejected to the surface of the undercoat layer of the impermeable recording medium.

5. A recording method including an ejection step in which an ink that comprises a coloring agent, a polymer particle, water, and a water-soluble organic solvent and that has a static surface tension of less than 30 mN/m and, when examined for dynamic surface tension by a maximum bubble pressure method, has a width of variation in dynamic surface tension of from 0.2 to 3.0 mN/m, the width of variation in dynamic surface tension being a difference between the dynamic surface tension measured at 1 msec after and the dynamic surface tension measured at 1 sec after a new interface was formed at the end of a capillary and when a maximum bubble pressure is reached, is ejected to a surface of the undercoat layer of an impermeable recording medium that has, on at least one surface thereof, an undercoat layer comprising a polymeric compound selected from the group consisting of polyurethane, polyester, polyvinyl chloride, and polyolefin.

6. The recording method according to claim 5 ,
wherein the undercoat layer in the impermeable recording medium further contains a surfactant selected from the group consisting of a silicone surfactant and a fluorochemical surfactant.

7. The recording method according to claim 5 ,
wherein the undercoat layer in the impermeable recording medium further contains a cationic compound or contains a cationic polymeric compound as the polymeric compound.

8. The recording method according to claim 5 , which further includes a drying step that dries the ink ejected to the surface of the undercoat layer of the impermeable recording medium.

Assignees

• Fuji Xerox Co Ltd

Inventors

• Yoneyama Hirohito
• Ueki Hiroyuki
• Hatanaka Mami
• Yomogida Reika

Classifications

• C09D11/54 Primary

  Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink · CPC title

• B41J2/01 Primary

  Ink jet · CPC title

• B41M5/0023

  Digital printing methods characterised by the inks used (inks per se C09D11/00) · CPC title

• B41M5/50

  Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording {(printing on organic plastics using a printer's form B41M1/30; printing on pre-treated paper with a printer's form B41M1/36)} · CPC title

• C09D11/30

  Inkjet printing inks · CPC title