Patent ID: 7638194
Filing Date: 2009-12-29
Classification: C08F,C08K,G03G,Y10T

Abstract:
1. A developer carrying member used in a developing assembly by means of which a latent image formed on an electrostatic latent image bearing member is developed and rendered visible by using a developer having been transported by a developer carrying member; the developer carrying member having at least a substrate and a resin layer formed on the substrate; said resin layer comprising a binder resin which contains at least a polymer having a unit represented by the following chemical formula (1): wherein R represents -A 25 -SO 2 R 25 , and R 25w , R 25x and R 25y are each selected from combination recited in the following (i) or (ii), where, in the case of (i), A 25 and R 25 are each selected from combination recited in the following (i-A) or (i-B), and, in the case of (ii), A 25 and R 25 are each selected from combination recited in the following (ii-A): (i) R (i-A) A (i-B) A (ii) R (ii-A) A