Electrophotographic member and electrophotographic image-forming apparatus

Patent metadata

Field	Value
Publication number	US-12019381-B2
Application number	US-202218059921-A
Country	US
Kind code	B2
Filing date	Nov 29, 2022
Priority date	Dec 3, 2021
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

An electrophotographic member includes a base layer, an elastic layer, and a surface layer stacked in this order. The surface layer contains a fluorine resin and a fluorine rubber, the fluorine rubber is contained at a proportion of 0.5 parts by mass or more and 1.0 parts by mass or less with respect to 1 part by mass of the fluorine resin, and the surface layer further contains a compound represented by formula (1):

CH 3 (CH 2 ) m —O—((CH 2 ) l O) n —OH  (1)

In formula (1), m, l, and n each independently represent an integer of 1 or more.

First claim

What is claimed is:

1. An electrophotographic member comprising:
a base layer, an elastic layer, and a surface layer stacked in this order,
the surface layer containing a fluorine resin and a fluorine rubber, wherein
the fluorine rubber is contained at a proportion of 0.5 parts by mass or more and 1.0 parts by mass or less with respect to 1 part by mass of the fluorine resin, and the surface layer further contains a compound represented by formula (1):
CH 3 (CH 2 ) m —O—((CH 2 ) l O) n —OH  (1),

in formula (1), m, l, and n each independently represent an integer of 1 or more.

2. The electrophotographic member according to claim 1 , wherein a content of the compound represented by formula (1) in the surface layer is 1 mass % or more and 10 mass % or less with respect to the surface layer.

3. The electrophotographic member according to claim 1 , wherein the compound represented by formula (1) is at least one ether selected from the group consisting of polyoxyethylene lauryl ether and polyoxyethylene myristyl ether.

4. The electrophotographic member according to claim 1 , wherein the surface layer has a surface resistivity of 1.0×10 7 Ω/square or more and 3.0×10 11 Ω/square or less.

5. The electrophotographic member according to claim 1 , wherein the surface layer has an elastic coefficient of 50 MPa or more and 100 MPa or less.

6. The electrophotographic member according to claim 1 , wherein the fluorine resin is at least one resin selected from the group consisting of a tetrafluoroethylene-hexafluoropropylene copolymer (FEP) resin, a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA) resin, and a tetrafluoroethylene (PTFE) resin.

7. The electrophotographic member according to claim 1 , wherein the fluorine rubber is at least one rubber selected from the group consisting of a vinylidene fluoride rubber (FKM), a tetrafluoroethylene-propylene rubber (FEPM), and a tetrafluoroethylene-perfluoromethyl vinyl ether rubber (FFKM).

8. The electrophotographic member according to claim 1 , wherein a content of the fluorine resin in the surface layer is 50 mass % or more and 66 mass % or less based on a total mass of the surface layer.

9. The electrophotographic member according to claim 1 , wherein the surface layer has a thickness of 5 μm or more and 30 μm or less.

10. The electrophotographic member according to claim 1 , wherein the elastic layer contains a silicone rubber.

11. The electrophotographic member according to claim 1 , being an electrophotographic belt having an endless belt shape.

12. The electrophotographic member according to claim 1 , being an intermediate transfer member.

13. An electrophotographic image-forming apparatus comprising an intermediate transfer member, wherein
the intermediate transfer member is constituted of an electrophotographic member; and
the electrophotographic member includes a base layer, an elastic layer, and a surface layer stacked in this order, wherein the surface layer contains a fluorine resin and a fluorine rubber, the fluorine rubber is contained at a proportion of 0.5 parts by mass or more and 1.0 parts by mass or less with respect to 1 part by mass of the fluorine resin, and the surface layer further contains a compound represented by formula (1):
CH 3 (CH 2 ) m —O—((CH 2 ) l O) n —OH  (1),

in formula (1), m, I, and n each independently represent an integer of 1 or more.

Assignees

• Canon Kk

Inventors

• Baba Yusuke
• Takahashi Masaaki
• Takenaga Masahiro
• Suzuki Takeshi
• Onuma Masayuki
• Okamoto Kaoru

Classifications

• G03G15/162 Primary

  details of the the intermediate support, e.g. chemical composition · CPC title

• G03G15/1605 Primary

  using at least one intermediate support (G03G15/1625 takes precedence) · CPC title