Invention Grant
US08475989B2 Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and process cartridge using the developer 有权
载体,制备载体的方法,使用载体的显影剂,显影剂容器和使用显影剂的成像方法和处理盒

Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and process cartridge using the developer
Abstract:
The carrier is used for a two-component developer for developing an electrostatic latent image, and includes a particulate magnetic core material; and a cover layer located on a surface of the core material and including a crosslinked material and barium sulfate. The cover layer is formed by applying a coating medium including barium sulfate, a copolymer including a unit (A) having a specific acrylic siloxane structure including a tris(trialkylsiloxy)silanyl group and a unit (B) having a specific acrylic silicone structure having a crosslinking ability, and a condensation reaction catalyst, heating the applied medium to a temperature of from 100° C. to 230° C. so that the copolymer is hydrolyzed to produce a material having a silanol group, and the material and the catalyst are subjected to a condensation reaction to form the crosslinked material.
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