PURPOSE: To obtain the above member which is free from surface staining, has an excellent gradation characteristic and fine line reproducibility and has high environmental stability by forming the compd. expressed by a specific formula on the surface.
CONSTITUTION: This member has at least one kind of the compds. expressed by formula I on the surface. In the formula I, X1+ and X2+ respectively independently denote formula II; Y1, Y2 respectively independently denote a direct bond, 1 to 10C alkylene group or 3 to 10C alkenylene group, Z denotes a bivalent arom. group, bivalent heterocyclic group, etc., or substd. alkylene group; (A1)- and (A2)- respectively independently denote an anion. In the formula II, R1, R2 and R3 respectively independently denote a substd. or unsubstd. alkyl group, substd. or unsubstd. cycloalkyl group. This member may be formed by coating a carrier, developing sleeve or doctor blade with the compd. expressed by formula I.
YAMAGUCHI KIYOTAKA
TAKEI MASASHI
YAMAMURA SHIGEO
KIYOYANAGI MASAYUKI
YAMAMOTO JUNKO
NOMURA MASAHARU
NIPPON KAYAKU KK