# US 2019/0168516 A1 · Image forming method, image forming device, and method of manufacturing printed matter

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- Number: US 2019/0168516 A1
- Document ID: US20190168516A1
- Status: Published application
- Kind: A1
- Application number: 16/211,912
- Filed: 2018-12-06
- Published: 2019-06-06
- Earliest claimed: 2017-12-06
- Assignees: Ricoh Company, Ltd.
- Inventors: Tomohiro NAKAGAWA; Hiroki HAGIWARA; Tatsuya MORITA; Yuki KAJI
- Web page: https://patentgrep.com/patent/US20190168516A1

## CPC

- B41J 11/002: {Curing or drying the ink on the copy materials, e.g. by heating or irradiating}
- 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}
- B41M 7/009: {using thermal means, e.g. infrared radiation, heat}
- C09D 11/322: Pigment inks
- C09D 11/40: Ink-sets specially adapted for multi-colour inkjet printing
- 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
- B41M 5/0047: {by ink-jet printing}
- B41M 5/0064: {on plastics, horn, rubber, or other organic polymers}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

An image forming method includes applying a pre-processing fluid to a non-permeable recording medium, jetting an ink to the non-permeable recording medium, and accelerating drying the pre-processing fluid applied to and the ink jetted to the non-permeable recording medium, wherein the pre-processing fluid contains a multivalent metal salt and a resin particle.

## Claims

### Claim 1

An image forming method comprising:
applying a pre-processing fluid to a non-permeable recording medium;
jetting an ink to the non-permeable recording medium; and
accelerating drying the pre-processing fluid applied to and the ink jetted to the non-permeable recording medium,
wherein the pre-processing fluid comprises a multivalent metal salt and a resin particle.

### Claim 2 (depends on 1)

The image forming method according to claim 1, wherein an amount of the pre-processing fluid applied to the non-permeable recording medium is from 1 to 6 g/m2.

### Claim 3 (depends on 1)

The image forming method according to claim 1, wherein the resin particle is at least one of a urethane resin particle having a glass transition temperature of 20 degrees C. or lower and an acrylic resin particle having a glass transition temperature of 20 degrees C. or lower.

### Claim 4 (depends on 1)

The image forming method according to claim 1, wherein the resin particle accounts for 1 to 20 percent by mass of a total amount of the pre-processing fluid.

### Claim 5 (depends on 1)

The image forming method according to claim 1, wherein the multivalent metal salt comprises at least one of a calcium salt and a magnesium salt.

### Claim 6 (depends on 1)

The image forming method according to claim 1, wherein an amount of the ink applied to the non-permeable recording medium is from 4 to 14 g/m2.

### Claim 7 (depends on 1)

The image forming method according to claim 1, wherein a drying device is used to accelerate drying the ink and the pre-processing fluid.

### Claim 8 (depends on 1)

The image forming method according to claim 1, wherein at least one of heated wind and infrared is used to accelerate drying the ink and the pre-processing fluid.

### Claim 9

An image forming device comprising:
a pre-processing fluid applying device configured to apply a pre-processing fluid to a non-permeable recording medium;
an inkjet device configured to jet an ink to the non-permeable recording medium; and
a drying accelerating device configured to accelerate drying the pre-processing fluid applied to and the ink jetted to the non-permeable recording medium,
wherein the pre-processing fluid comprises a multivalent metal salt and a resin particle.

### Claim 10 (depends on 1)

A method of manufacturing printed matter, utilizing the image forming method of claim 1.