CHARGING ROLL, CHARGING DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND MANUFACTURING METHOD OF CHARGING ROLL

摘要

PROBLEM TO BE SOLVED: To provide a charging roll that has suppressed the occurrence of unevenness in charging.SOLUTION: There is provided a charging roll 121 that has a conductive support 30, and an elastic layer 31 that is formed on the conductive support 30 by being vulcanized under an environment at a pressure of 850 hPa or more and 1013 hPa or less and has a bubble fraction (surface ratio) on a cross section of 10% or less.