PURPOSE: To avoid effectively the sticking of gallium onto the surface of a photoreceptor, and carry out main electrification stably on the surface of the photoreceptor by forming a fluorine-contained coating layer on the surface of the photoreceptor by means of a fluorine plasma treatment, and bringing the surface of the photoreceptor into frictional contact with liquid gallium.
CONSTITUTION: A fluorine contained surface layer 1a is formed on the surface of a photoreceptor 1 by means of a fluorine plasma treatment, and the surface of the photoreceptor 1 is brought into frictional contact with liquid gallium. Since the extremely thin fluorine-contained coating layer 1a is formed on the surface of the photoreceptor 1, a contact angle between the surface of the photoreceptor 1 and metallic gallium becomes extremely large, and when the frictional contact of the melting state gallium with the photoreceptor 1 is carried out continuously for a long time, the sticking of the gallium onto the surface of the photoreceptor 1 can be avoided effectively. Since this coating layer 1a is formed in an atom level thickness and is also an extremely thin coating layer, the sticking of the gallium onto the surface of the photoreceptor 1 can be prevented without exerting a bad influence at all upon an electrification characteristic and so on of the photoreceptor 1.
Yoshihiro Momose
Teruaki Higashiguchi
Mirror Shoji
Akinori Nishida
