Contact member, drying apparatus, and printing apparatus for treating liquid-coated substrates

Patent metadata

Field	Value
Publication number	US-12459276-B2
Application number	US-202218554175-A
Country	US
Kind code	B2
Filing date	Apr 15, 2022
Priority date	Apr 21, 2021
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

To provide a contact member which prevents a component derived from a liquid composition, from being transferred from a contacted member to a contact member, even in a case where the contact member and the contacted member are used for a long period of time in a manner of being in contact with each other (Means of Achieving the object) A contact member configured to contact a contacted member to which a liquid composition is applied, includes a surface layer (A) configured to contact the contacted member, wherein the surface layer (A) includes a support layer including alumite sulfate, the surface layer (A) has a root mean square height Sq of 1.0 μm or more, and the surface layer (A) has an orthogonal line roughness ratio of 0.7 or more.

First claim

The invention claimed is:

1 . A contact member configured to contact a contacted member to which a liquid composition is applied, the contact member comprising:
a surface layer (A) configured to contact the contacted member, wherein the surface layer (A) includes a support layer including alumite sulfate, the surface layer (A) has a root mean square height Sq of 1.0 μm or more, and the surface layer (A) has an orthogonal line roughness ratio in a range between 0.8˜0.9.

2 . The contact member according to claim 1 , wherein the root mean square height Sq of the surface layer (A) is 10.0 μm or less.

3 . The contact member according to claim 1 , wherein a ratio of an area where the surface layer (A) and the contacted member contact each other, with respect to an area of the surface layer (A), is 10% or more and 90% or less.

4 . The contact member according to claim 1 , wherein the surface layer (A) includes fluorine resin particles adhering to the support layer.

5 . The contact member according to claim 1 , wherein an amount of elemental fluorine in the surface layer (A) is 5.0 atm % or more.

6 . The contact member according to claim 1 , wherein the contact member has a Vickers hardness of 400 Hv or more and 500 Hv or less.

7 . The contact member according to claim 1 , wherein an average thickness of the support layer is 20 μm or more and 40 μm or less.

8 . The contact member according to claim 1 , wherein
the contact member includes a base material and the surface layer (A) provided on the base material, and the base material includes aluminum.

9 . The contact member according to claim 1 , wherein the contact member is shaped as a roller having a diameter of 50 mm or more and 600 mm or less.

10 . The contact member according to claim 1 , wherein the contact member includes a heating unit configured to apply heat to the contacted member via the surface layer (A).

11 . The contact member according to claim 1 , wherein the surface layer (A) has a temperature of 70° C. or more and 260° C. or less.

12 . A drying apparatus, comprising:
the contact member according to claim 1 , wherein the drying apparatus is configured to dry the contacted member to which the liquid composition is applied.

13 . A printing apparatus, comprising:
a liquid composition applying unit configured to apply the liquid composition to the contacted member; and the contact member according to claim 1 .

14 . The printing apparatus according to claim 13 , further comprising:
a contacted member supplying unit configured to supply the contacted member; a contacted member retrieving unit configured to retrieve the contacted member; and a conveying path on which the contacted member supplied from the contacted member supplying unit is conveyed until being retrieved by the contacted member retrieving unit, wherein a length of the contacted member in a conveying direction is longer than a length of the conveying path.

15 . The printing apparatus according to claim 13 , wherein a speed of conveying the contacted member is 50 m/min or more.

Assignees

• Hatta Chikako
• Mizutani Yuuki
• Ricoh Co Ltd

Inventors

• Hatta Chikako
• Mizutani Yuuki

Classifications

• C09D11/30

  Inkjet printing inks · CPC title

• B41J11/007

  Conveyor belts or like feeding devices · CPC title

• B41J11/00244

  Means for heating the copy materials before or during printing · CPC title

• B41J13/076

  Construction of rollers; Bearings therefor · CPC title

• C25D11/16

  Pretreatment {, e.g. desmutting} · CPC title