COLOR DEVELOPER MICROCAPSULE AND PRESSURE-SENSITIVE COPYING PAPER USING THE SAME

PROBLEM TO BE SOLVED: To provide a color developer microcapsule which alleviates dirt (deposit) inside the tank during manufacture and connotes an electron donor colorless dye in a hydrophobic liquid which is excellent in color development and pressure proof quality, and to provide a pressure-sensit...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAGI TAKESHI, ENDO JUNYA, NAGAI TATSUO, KURIHARA TATSUYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY COLOUR PRINTING LINING MACHINES PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES STAMPS THEIR RELEVANT APPARATUS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a color developer microcapsule which alleviates dirt (deposit) inside the tank during manufacture and connotes an electron donor colorless dye in a hydrophobic liquid which is excellent in color development and pressure proof quality, and to provide a pressure-sensitive copying paper using the color developer microcapsule. SOLUTION: There is provided the color developer microcapsule wherein the degree of polymerization of polyvinyl alcohol is 1,000 or less and the pressure-sensitive copying paper using the color developer microcapsule, in the color developer microcapsule having a polyurethane film which is obtained by adding a hydrophobic liquid containing the electron donor colorless dye and a polyisocyanate into the water-soluble liquid containing the polyvinyl alcohol as an emulsifier. COPYRIGHT: (C)2010,JPO&INPIT