Kanzaki Paper Manufacturing Co., Ltd.

Oji Paper Co., Ltd.

Masanao Tajiri

Shunsuke Shioi

Kazuyuki Shinmitsu

Shigeru Suzuki

Makoto Miyake

Ritsuo Mando

Toshiro Hada

Shigeji Matsuzawa

Rie Harunaga

Takashi Umemoto

Kazuyoshi Wakata

Disclosed is a heat-sensitive recording material comprising

Thermal recording material

Heat-sensitive recording material

An improved pressure sensitive recording sheet capable of causing an improved color development which comprises a substrate and a layer containing microcapsules each containing an electron-donative chromogenic material and a hydrophobic medium containing benzyl toluene being formed on the substrate. The pressure sensitive recording sheet exhibits an excellent color-developing property and provides clear color images of high density.

Pressure sensitive recording sheet with a layer containing microcapsules

A microcapsule-containing ink composition for flexographic printing containing microcapsules, an adhesive and an ink medium, the composition being characterized in that the adhesive includes a polymer composed of a methacrylate or acrylate singly or as its main component and having an average molecular weight of 3000 to 50,000.

Microcapsule-containing ink composition for flexographic printing

In a microencapsulation process which comprises polycondensating a hydrophilic melamine-formaldehyde resin type precondensate in water or in a hydrophilic medium containing an emulsifier to form capsule wall film around a hydrophobic core material to obtain microcapsules, the process which is characterized in that the emulsifier is a copolymer of (1) an unsaturated monobasic acid monomer of at least 80 mole %, (2) a hydrophobic monomer and (3) a hydrophilic monomer other than a carboxylic acid.

Process for preparing microcapsules

Growing community of inventors

Amagasaki, Japan

Masanao Tajiri