Ink jet recording method, ink jet recording apparatus and aqueous ink

Patent metadata

Field	Value
Publication number	US-2025083465-A1
Application number	US-202418815276-A
Country	US
Kind code	A1
Filing date	Aug 26, 2024
Priority date	Aug 30, 2023
Publication date	Mar 13, 2025
Grant date	—

Abstract

There is provided an ink jet recording method including an ink applying step, a drying step and a fixing step. An aqueous ink contains a resin particle and a wax particle. The glass transition temperature (T g (° C.)) of the resin particle, the melting point (T m ) of the wax particle and the surface temperature (T d (° C.)) of the recording medium heated in the drying step satisfy the relationship of the following formula (1):

T
m

>

λ

C
⁢
H

⁢

C

C
⁢
H

×

T
CH

+

λ

p
⁢
a
⁢
p
⁢
e
⁢
r

⁢

C
paper

×

T

p
⁢
a
⁢
p
⁢
e
⁢
r

λ

C
⁢
H

⁢

C
CH

+

λ
paper

⁢

C
paper

≥

T
g

>

T
d

.

formula
⁢

(
1
)

First claim

What is claimed is:

1 . An ink jet recording method, comprising:
an ink applying step of applying an aqueous ink to an ink-absorbent recording medium by discharging the aqueous ink from an ink jet recording head; a drying step of subjecting the recording medium to which the aqueous ink has been applied to non-contact heating to dry the aqueous ink; and a fixing step of fixing the aqueous ink on the recording medium by bringing the recording medium after the drying step into contact with a fixing member to heat the aqueous ink, wherein the aqueous ink comprises a resin particle and a wax particle, and a glass transition temperature (T g (° C.)) of the resin particle, a melting point (T m ) of the wax particle and a surface temperature (T d (° C.)) of the recording medium heated in the drying step satisfy a relationship of the following formula (1):

T
m

>

λ

C
⁢
H

⁢

C

C
⁢
H

×

T
CH

+

λ

p
⁢
a
⁢
p
⁢
e
⁢
r

⁢

C
paper

×

T

p
⁢
a
⁢
p
⁢
e
⁢
r

λ

C
⁢
H

⁢

C
CH

+

λ
paper

⁢

C
paper

≥

T
g

>

T
d

formula
⁢

(
1
)

where in formula (1), λ CH is a thermal conductivity (W/m·K) of the fixing member, C CH is a thermal capacity (J/m 3 ·K) of the fixing member, T CH is a surface temperature (° C.) of the fixing member immediately before the fixing member comes into contact with the recording medium, λ paper is a thermal conductivity (W/m·K) of the recording medium, C paper is a thermal capacity (J/m 3 ·K) of the recording medium and T paper is a surface temperature (° C.) of the recording medium immediately before the recording medium comes into contact with the fixing member.

2 . The ink jet recording method according to claim 1 , wherein λ CH , C CH , λ paper and C paper satisfy a relationship of the following formula (2):

λ

C
⁢
H

⁢

C

C
⁢
H

≥

λ
paper

⁢

C
paper

.

formula
⁢

(
2
)

3 . The ink jet recording method according to claim 1 , wherein T d is 40° C. or higher to 100° C. or lower.

4 . The ink jet recording method according to claim 1 , further comprising:
a reaction liquid applying step of applying an aqueous reaction liquid containing a reactant that reacts with the aqueous ink to a recording medium.

5 . An ink jet recording apparatus for use in an ink jet recording method, wherein the method includes:
an ink applying step of applying an aqueous ink to an ink-absorbent recording medium by discharging the aqueous ink from an ink jet recording head; a drying step of subjecting the recording medium to which the aqueous ink has been applied to non-c

Assignees

• Canon Kk

Inventors

• Moriguchi Takuto
• Yoshitake Osamu
• Sato Shin-Ichi
• Moribe Shoei
• Otani Ryosuke

Classifications

• B41M7/009 Primary

  using thermal means, e.g. infrared radiation, heat · CPC title

• B41J11/0024

  using conduction means, e.g. by using a heated platen · CPC title

• C09D11/322 Primary

  Pigment inks · CPC title