DEVELOPMENT ROLLER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE-FORMING DEVICE

摘要

Provided is a development roller with which it is possible to form stable images in a wide range of environments ranging from a low-temperature low-humidity to a high-temperature high-humidity environment. The development roller has a surface layer constituted of a silicon oxide film at least containing carbon atoms chemically bonded to silicon atoms, oxygen atoms chemically bonded to silicon atoms, and fluorine atoms chemically bonded to silicon and/or carbon atoms. In the silicon oxide film, the proportion of the fluorine atoms to the silicon atoms (F/Si), the proportion of the oxygen atoms chemically bonded to silicon atoms to the silicon atoms (O/Si), and the proportion of the carbon atoms chemically bonded to silicon atoms to the silicon atoms (C/Si) are within specific ranges.