Kao Corporation

Nippon Shokubai

Iwatsu Electro Co., Ltd.

Hideki Sakai

Isao Tsuru

Shigefumi Kuramoto

Norihiro Yoshida

Tomoaki Il

Jun Tairadate

Kimiya Yamada

Daijou Tomihisa

Takafumi Hirano

Yoshiharu Niizeki

Tomoaki Ii

The present invention relates to an ink-jet printing method using an apparatus including a printing means for ejecting a black ink to a printing substrate to print characters or images on the printing substrate, and a drying means disposed on a downstream side of a transportation direction of the printing substrate, in which the printing substrate is a label printing substrate; the black ink is a water-based composite black ink; the water-based composite black ink contains a composite black pigment containing carbon black, and a content of the carbon black in the composite black pigment is not more than 25% by mass; and the drying means is an infrared heater for heating the water-based composite black ink ejected onto the printing substrate to a temperature of not lower than 95&#xb0; C. and not higher than 125&#xb0; C. According to the ink-jet printing method of the present invention, it is possible to obtain a good printed material that is free of color migration or deformation of a printing substrate even when printed on a label printing substrate.

Ink jet recording method

The present invention provides photoconductive paints which have excellent dispersability and dispersion stability and which allow formation of coatings with high coating strength and excellent smoothness. The invention relates to photoconductive paint composed primarily of an inorganic photoconductive material and a binding resin formed on a conductive substrate, wherein the binding resin contains compound fine particles (A) and a resin (B) as defined below, in a solid weight ratio of compound fine particles (A)/resin (B) in the range of 0.5/9.5-4.0/6.0. The compound fine particles (A) have an organic polymer bound to surfaces of inorganic fine particles, and the resin (B) is a resin composition obtained by polymerizing an acrylic monomer mixture, the resin having an acid value of 2.0-12.0.

Photoconductive paint and electrophotographic photosensitive body

Growing community of inventors

Tachikawa, Japan

Hideki Sakai