POST-TREATMENT LIQUID FOR INKJET RECORDING, IMAGE FORMING METHOD, CARTRIDGE AND IMAGE FORMING APPARATUS

• US 20130201252A1
• Filed: 01/17/2013
• Published: 08/08/2013
• Est. Priority Date: 02/02/2012
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Michihiko Namba
• Inventors: NAMBA, Michihiko
• Granted Patent: US 9,321,921 B2
• Time in Patent Office: Days
• US Class Current: 347/21
• CPC Class Codes: B41J 11/0015 for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing selective coating B41J2/2114
• CPC Class Codes: B41M 5/0017 Application of ink-fixing material, e.g. mordant, precipitating agent, on the substrate prior to printing, e.g. by ink-jet printing, coating or spraying
• CPC Class Codes: B41M 7/0036 using protective coatings or layers dried without curing
• CPC Class Codes: C09D 11/322 Pigment inks
• CPC Class Codes: C09D 11/40 Ink-sets specially adapted for multi-colour inkjet printing
• CPC Class Codes: C09D 11/54 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 Class Codes: C09D 5/00 Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced electrically insulating plastics, resins or waxes H01B3/30; Filling pastes

Abstract

A post-treatment liquid for inkjet recording including a urethane resin, a fluorosurfactant, a water-soluble organic solvent and water.

Claims

1. A post-treatment liquid for inkjet recording, comprising:

a urethane resin;

a fluorosurfactant;

a water-soluble organic solvent; and

water.

2. The post-treatment liquid for inkjet recording according to claim 1,

wherein the urethane resin is an anionic self-emulsifying ether-based urethane resin.

3. An image forming method by inkjet recording, comprising:

forming an image on a recording medium using an ink; and

post-treating an image-forming section formed in the forming an image by discharging a post-treatment liquid for inkjet recording to coat the image-forming section,

wherein the image-forming section comprises the image, and

wherein the post-treatment liquid for inkjet recording comprises;

a urethane resin;

a fluorosurfactant;

a water-soluble organic solvent; and

water.

4. The image forming method according to claim 3,

wherein the ink is a water-based ink, and the recording medium is offset printing paper.

5. The image forming method according to claim 3, further comprising pre-treating before the forming an image,

wherein the recording medium is treated with a pre-treatment liquid in the pre-treating, and

wherein the pre-treatment liquid comprises:

a water-soluble organic solvent;

water; and

an aliphatic organic acid salt or an inorganic metal salt, or both thereof.

6. A cartridge, comprising a post-treatment liquid for inkjet recording,

wherein the post-treatment liquid for inkjet recording comprises:

a urethane resin;

a fluorosurfactant;

a water-soluble organic solvent; and

water.