Electrophotographic member and electrophotographic image forming apparatus
OwnerYasutomo Tsuji, Masatsugu Toyonori +4inventors
InventorsYASUTOMO TSUJI, MASATSUGU TOYONORI, SHOHEI ISHIO, HIROOMI KOJIMA, TOMOE OKAWA, HIROYUKI KADOWAKI
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Abstract
An electrophotographic member composing a base layer and a surface layer on the base layer. The surface layer comprises a binder resin and electronically conductive particles. The binder resin comprises a polymer having an organosiloxane polymer moiety. The organosiloxane polymer moiety has a silsesquioxane structure. An infrared absorption spectrum obtained by measuring the surface of the surface layer using infrared spectroscopy satisfies specific formulas.
Claims10
An electrophotographic member composing:
- a base layer;
- and
- a surface layer on the base layer, wherein
- the surface layer comprises a binder resin and electronically conductive particles,
- the binder resin comprises a polymer having an organosiloxane polymer moiety,
- the organosiloxane polymer moiety has a silsesquioxane structure, and
- an infrared absorption spectrum obtained by measuring a surface of the surface layer using infrared spectroscopy satisfies formulas (1) and (2):
- 0.2
- ≤
- (
- B
- /
- A
- )
- ≤
- 0.6
- (
- 1
- )
- 0.5
- ≤
- (
- C
- /
- A
- )
- ≤
- 0.92
- (
- 2
- )
- A represents a maximum value of absorbance in an absorption band corresponding to Si—O—Si bonds observed within a wavenumber range of 1000 to 1025 cm−1, B represents a maximum value of absorbance in an absorption band corresponding to Si—OH bonds observed within a wavenumber range of 3200 to 3500 cm−1, and C represents a maximum value of absorbance in an absorption band corresponding to Si—CH3 bonds observed within a wavenumber range of 1225 to 1300 cm−1.
An electrophotographic image forming apparatus comprising:
- an intermediate transfer member, wherein
- the intermediate transfer member is an electrophotographic member composing a base layer and a surface layer on the base layer,
- the surface layer comprises a binder resin and electronically conductive particles,
- the binder resin comprises a polymer having an organosiloxane polymer moiety,
- the organosiloxane polymer moiety has a silsesquioxane structure, and
- an infrared absorption spectrum obtained by measuring a surface of the surface layer using infrared spectroscopy satisfies formulas (1) and (2):
- 0.2
- ≤
- (
- B
- /
- A
- )
- ≤
- 0.6
- (
- 1
- )
- 0.5
- ≤
- (
- C
- /
- A
- )
- ≤
- 0.92
- (
- 2
- )
- A represents a maximum value of absorbance in an absorption band corresponding to Si—O—Si bonds observed within a wavenumber range of 1000 to 1025 cm−1, B represents a maximum value of absorbance in an absorption band corresponding to Si—OH bonds observed within a wavenumber range of 3200 to 3500 cm−1, and C represents a maximum value of absorbance in an absorption band corresponding to Si—CH3 bonds observed within a wavenumber range of 1225 to 1300 cm−1.
Dependencies are inferred from the claim text.