DEVELOPMENT ROLLER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC DEVICE Russian patent published in 2015 - IPC C09D17/00 G03G15/08 

FIELD: physics, photography.

SUBSTANCE: invention relates to the development roller used for creation of high quality electrophotographic image. The development roller, includes the core, elastic layer on the core and containing baked material from dimethyl silicon rubber, seamed by means of additive reaction, and surface layer containing urethane tar, which coats a peripheral surface of elastic layer, where urethane tar has the structure, represented by below mentioned formula (1) , and one or both structures selected from the structure, represented by below mentioned formula (2) , and the structure, represented by below mentioned formula (3) , between two adjacent urethane links.

EFFECT: invention allows to create a development roller, which at storage and use in environment at high temperature and high humidity constrains peeling of the surface layer from the elastic layer, and the toner is reluctantly adheres to the surface of a development roller.

4 cl, 6 dwg, 13 tbl