摘要:
The present invention relates to a piezoelectric ceramic composition for actuator which is a composition comprising a basic composition containing lead, lanthanum, alkali earth metals, zirconium, titanium and oxygen in the formulation represented by the following general formula (I): ##EQU1## where A represents one or more element(s) selected from the group consisting of Ba, Ca and Sr; 0
摘要:
A piezoelectric ceramic composition for actuators, composed of lead, lanthanum, zirconium, titanium, magnesium, zinc, niobium, manganese, chromium and oxygen atoms, which contains manganese in an amount of at most 1.5% by weight as calculated as Mn.sub.2 O and chromium in an amount of at most 0.5% by weight as calculated as Cr.sub.2 O.sub.3, relative to a main component composition of the formula (I):Pb.sub.(1-x) La.sub.x [(1-z)(Zr.sub.y Ti.sub.(1-y))+z{Mg.sub.q Zn.sub.(1-q)).sub.1/3 Nb.sub.2/3 }].sub.(1-x/4) O.sub.3 (I)wherein 0
摘要:
An electrophotographic copying method, which comprises conducting each process of at least charging, exposing to light, developing and transferring, characterized in that the photoreceptor has at least an undercoat layer and a photosensitive layer on an electroconductive substrate, wherein the undercoat layer contains a semiconductive material having a band gap of at least 2.2 eV and a binder resin, the photosensitive layer contains at least a phthalocyanine compound as a charge-generation material, and image-formation is carried out from the first revolution of the photoreceptor.
摘要:
An electrophotographic photosensitive member, including: a conductive substrate; an undercoat layer formed on the conductive substrate, which contains a binder resin and metal oxide particles treated with an organic metal compound represented by formula (1): where M is —Si3, —TiR3 or Al; R is a hydrogen atom or a C1 to C6 alkyl group; R1 and R2 are each, independently, a C1 to C6 alkyl group; R3 is a C1 to C6 alkyl group which may be substituted with an alkoxy group or a C1 to C6 alkoxy group which may be substituted with an alkoxy group; and a photosensitive layer formed on the undercoat layer.