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US 11,635,717 B2Granted
Electrophotographic member and method for manufacturing the same, thermal fixing apparatus, and electrophotographic image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMatsutaka Maeda, Yuji Kitano
Life of this patent
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Abstract
An electrophotographic member comprising a base body and an elastic layer on the base body, the elastic layer including silicone rubber and metallic silicon particles in the silicone rubber; wherein the metallic silicon particles have a mass reduction rate of 0.05% or more.
Claims8
An electrophotographic member, comprising:
- a base body;
- and
- an elastic layer on the base body, the elastic layer comprising silicone rubber and metallic silicon particles in the silicone rubber,
- wherein the metallic silicon particles have a mass reduction rate of 0.05% or more, the mass reduction rate being determined by:
- (i) collecting 2 g of a sample from the elastic layer;
- (ii) immersing the sample into 50 ml of a normal propyl bromide liquid containing dodecylbenzene sulfuric acid at a concentration of 10 wt % and having a temperature of 40° C., and applying an ultrasonic wave of 40 kHz for 60 minutes to dissolve the silicone rubber of the sample;
- (iii) extracting the metallic silicon particles, and then subjecting the metallic silicon particles extracted to vacuum filtration washing three times with 10 ml of toluene at a temperature of 25° C.;
- and
- (iv) subjecting the metallic silicon particles resulting from the step (iii) to a thermogravimetric analysis and measuring the mass reduction rate in temperature range of from 300° C. to 500° C.
6 more elements
A thermal fixing apparatus comprising a heating member and a pressing member that heats a recording material having an unfixed toner image thereon at a nip portion that is formed by the heating member and the pressing member to fix the unfixed toner image on the recording material,
- wherein the heating member is an electrophotographic member comprising a base body and an elastic layer on the base body,
- wherein the elastic layer comprises silicone rubber and metallic silicon particles in the silicone rubber, and
- wherein the metallic silicon particles have a mass reduction rate of 0.05% or more, the mass reduction rate being determined by:
- (i) collecting 2 g of a sample from the elastic layer;
- (ii) immersing the sample into 50 ml of a normal propyl bromide liquid containing dodecylbenzene sulfuric acid at a concentration of 10 wt % and having a temperature of 40° C., and applying an ultrasonic wave of 40 kHz for 60 minutes to dissolve lvc the silicone rubber of the sample;
- (iii) extracting the metallic silicon particles, and then subjecting the metallic silicon particles extracted to vacuum filtration washing three times with 10 ml of toluene at a temperature of 25° C.;
- and
- (iv) subjecting the metallic silicon particles resulting from the step (iii) to a thermogravimetric analysis and measuring the mass reduction rate in temperature range of from 300° C. to 500° C.
5 more elements
An electrophotographic image forming apparatus comprising a thermal fixing apparatus,
- wherein the thermal fixing apparatus is a thermal fixing apparatus comprising a heating member and a pressing member that heats a recording material having an unfixed toner image thereon at a nip portion that is formed by the heating member and the pressing member to fix the unfixed toner image on the recording material,
- wherein the heating member is an electrophotographic member comprising a base body and an elastic layer on the base body,
- wherein the elastic layer comprises silicone rubber and metallic silicon particles in the silicone rubber, and
- wherein the metallic silicon particles have a mass reduction rate of 0.05% or more, the mass reduction rate being determined by:
- (i) collecting 2 g of a sample from the elastic layer;
- (ii) immersing the sample into 50 ml of a normal propyl bromide liquid containing dodecylbenzene sulfuric acid at a concentration of 10 wt % and having a temperature of 40° C., and applying an ultrasonic wave of 40 kHz for 60 minutes to dissolve the silicone rubber of the sample;
- (iii) extracting the metallic silicon particles, and then subjecting the metallic silicon particles extracted to vacuum filtration washing three times with 10 ml of toluene at a temperature of 25° C.;
- and
- (iv) subjecting the metallic silicon particles resulting from the step (iii) to a thermogravimetric analysis and measuring the mass reduction rate in temperature range of from 300° C. to 500° C.
6 more elements
Dependencies are inferred from the claim text.