Method for imparting water repellency to surface of member

Patent metadata

Field	Value
Publication number	US-2016357106-A1
Application number	US-201615172005-A
Country	US
Kind code	A1
Filing date	Jun 2, 2016
Priority date	Jun 5, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A method for imparting water repellency to a surface of a member includes a step in which a material including a compound containing a fluorine atom is deposited on a surface of a photosensitive resin layer in order to form a member including a material layer; a first exposure step in which the member is exposed to an amount of light with an exposure apparatus in order to form a latent image in the member; a development step in which the member including the latent image is developed; and a second exposure step in which the member is exposed to an amount of light with an exposure apparatus subsequent to the development step.

First claim

What is claimed is:

1 . A method for imparting water repellency to a surface of a member, the method comprising:
a step in which a material including a compound containing a fluorine atom is deposited on a surface of a photosensitive resin layer in order to form a member including the photosensitive resin layer and a material layer including the material, the material layer being disposed on a front surface of the photosensitive resin layer; a first exposure step in which the member is exposed to an amount of light with an exposure apparatus in order to form a latent image in the member; a development step in which the member including the latent image is developed; and a second exposure step in which the member is exposed to an amount of light with an exposure apparatus subsequent to the development step.

2 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein the amount of light received by the surface of the member in the first exposure step is 1.0 J/cm 2 or less.

3 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein a total amount of light received by the surface of the member in the first exposure step and the second exposure step is 1.5 J/cm 2 or more.

4 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein a contact angle of pure water on the surface of the member is increased by 3° or more as compared with a contact angle of pure water on a surface of a second member subjected to a method for imparting water repellency in which the second exposure step is not conducted.

5 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein, in the second exposure step, the member is exposed to light such that the amount of light received by the surface of the member reaches 1.0 J/cm 2 or more within 1 hour.

6 . The method for imparting water repellency to a surface of a member according to claim 1 , the method further comprising:
a preliminary curing step in which the member is heated at 120° C. or more and 160° C. or less for 2 minutes or more and 20 minutes or less; and a final curing step in which the member is heated at 170° C. or more and 220° C. or less for 30 minutes or more and 120 minutes or less.

7 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein a preliminary curing step is conducted subsequent to the second exposure step.

8 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein a preliminary curing step is conducted prior to the second exposure step.

9 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein a final curing step is conducted subsequent to the second exposure step.

10 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein a final curing step is conducted prior to the second exposure step.

11 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein the photosensitive resin layer is a negative photosensitive resin layer.

12 . The method for imparting water repellency to a surface of a member according to claim 1 ,
wherein the compound containing a fluorine atom is a condensate of a hydrolyzable silane compound.

13 . The method for imparting water repellency to a surface of a member according to claim 12 ,
wherein the condensate of a hydrolyzable silane compound is a condensate of a hydrolyzable silane compound including an epoxy group.

14 . A method for imparting water repellency to an ejection port surface of a liquid ejection head, the ejection port surface being a surface of the liquid ejection head on which an ejection port is formed, the method comprising:
a step in which a material including a compound containing a fluorine atom is deposited on a surface of a photosensitive resin layer, the surface of the photosensitive resin layer serving as an ejection port surface, in order to form a member including the photosensitive resin layer and a material layer including the material, the material layer being disposed on a front surface of the photosensitive resin layer; a first exposure step in which the member is exposed to an amount of light with an exposure apparatus in order to form a latent image in the member; a development step in which the member including the latent image is developed; and a second exposure step in which the member is exposed to an amount of light with an exposure apparatus subsequent to the development step.

15 . The method for imparting water repellency to an ejection port surface of a liquid ejection head according to claim 14 ,
wherein the amount of light received by the surface of the member in the first exposure step is 1.0 J/cm 2 or less.

16 . The method for imparting water repellency to an ejection port surface of a liquid ejection head according to claim 14 ,
wherein a total amount of light received by the surface of the member in the first exposure step and the second exposure step is 1.5 J/cm 2 or more.

17 . The method for imparting water repellency to an ejection port surface of a liquid ejection head according to claim 14 ,
wherein a contact angle of pure water on the surface of the member is increased by 3° or more as compared with a contact angle of pure water on a surface of a second member subjected to a method for imparting water repellency in which the second exposure step is not conducted.

18 . The method for imparting water repellency to an ejection port surface of a liquid ejection head according to claim 14 ,
wherein, in the second exposure step, the member is exposed to light such that the amount of light received by the surface of the member reaches 1.0 J/cm 2 or more within 1 hour.

19 . The method for imparting water repellency to an ejection port surface of a liquid ejection head according to claim 14 , the method further comprising:
a preliminary curing step in which the member is heated at 120° C. or more and 160° C. or less for 2 minutes or more and 20 minutes or less; and a final curing step in which the member is heated at 170° C. or more and 220° C. or less for 30 minutes or more and 120 minutes or less.

20 . The method for imparting water repellency to an ejection port surface of a liquid ejection head according to claim 14 ,
wherein a preliminary curing step is conducted subsequent to the second exposure step.

Assignees

• Canon Kk

Inventors

• Nagai Masataka
• Tagawa Yoshinori
• Nagata Shingo
• Murayama Hiroyuki
• Oya Shuhei
• Watanabe Makoto

Classifications

• B41J2/1603

  of the front shooter type · CPC title

• G03F7/0757

  Macromolecular compounds containing Si-O, Si-C or Si-N bonds (G03F7/0752 takes precedence) · CPC title

• B41J2/1606

  Coating the nozzle area or the ink chamber · CPC title

• G03F7/11 Primary

  having cover layers or intermediate layers, e.g. subbing layers {(G03F7/091 - G03F7/093, B41N3/03 take precedence)} · CPC title

• G03F7/325

  Non-aqueous compositions · CPC title