| 摘要 |
PROBLEM TO BE SOLVED: To provide a development roller and a development device that are excellent in environmental stability of electrification.SOLUTION: A development roller has a top surface formed of resin. The resin forming the top surface contains an alkenyl ketone structure unit deriving from a vinyl alkenyl ketone monomer including a cycloalkyl group that may have a substituent group or a phenyl group that may have the substituent group. The alkenyl ketone structure unit is preferable to be represented by the following general expression (1) (where Rdenotes the cycloalkyl group that may have the substituent group or the phenyl group that may have the substituent group, Rdenotes a hydrogen atom or a methyl group, and Rand Rdenote the hydrogen atom or the alkyl group, respectively and independently. n is an integer more than 0.). |
