Injex Corporation

Matsumoto Dental College

Seiko Epson Corporation

Sony Chemicals Corporation

Mikuni Color Ltd.

Naoki Tanaka

Michio Ito

Shuichi Yamaguchi

Hiroshi Ohtsubo

Tetsuya Abe

Kiyohiko Takemoto

Kazuaki Watanabe

Takashi Nozawa

Naoki Okamoto

Minoru Waki

Kazumi Adachi

An ink composition is provided which can realize printing with excellent fixation even on a coated paper having a smooth surface. Further, an ink composition is also provided which, when used in ink jet printing, causes neither clogging nor creation of a precipitate. A copolymer of butyl acrylate, methyl methacrylate, and acrylic acid is added to an ink composition.

Ink composition capable of realizing print with improved fixation

A recording sheet has a base and a receptive layer disposed on at least one surface of the base. The receptive layer contains at least a water-absorbent copolymer and said water-resistant graft copolymer whose main chain is polyvinyl alcohol. The water-absorbent copolymer absorbs inks, and the water-resistant graft copolymer makes the receptive layer resistant to discoloration, blurring, and gloss or luster irregularities. The water-absorbent graft copolymer comprises a graft copolymer produced by grafting a vinyl monomer having a carboxyl group and a monomer having a functional group reacting with the carboxyl group. The water-absorbent copolymer comprises a copolymer of acrylic acid and vinyl alcohol. The water-resistant graft copolymer and the water-absorbent copolymer are added at a ratio in parts by weight ranging from 20/80 to 80/20, preferably, from 30/70 to 70/30.

Recording sheet and method of recording image using such recording sheet

A dental care material comprising a titanium sintered body has no harmful effects on the human body and easily produces products with complicated shapes having a high level of strength. A mixture of titanium powder and an organic binder is injection molded and subjected to binder removal and sintering processes to form a bracket for orthodontic or dental implant materials. Pure titanium powder, with an average granule diameter of no more than 40 .mu.m, a carbon content by weight of no more than 0.3%, and an oxygen content by weight of no more than 0.6%, preferably is used to produce a titanium sintered body of combined carbon and oxygen content by weight of no more than 1.0%. Colored layers can be formed on the surface of the titanium sintered body using various methods as needed.

Dental care material and manufacturing method

Growing community of inventors

Suwa, Japan

Naoki Tanaka