Stencil printing emulsion ink

Patent name Emulsion ink for stencil printing Patent applicant Northeast Ricoh Co., Ltd. Principal applicant Address Miyagi Prefecture Inventor Ono Koyoshi Ono; Koizumi Shimbun (patent) No. 200510053002.8 Date of application 2005.03.04 Award date Audit No. 1690139 Date of approval announcement 2005.11.02 Specification CD-ROM D0544 Main classification number C09D11/10 Classification number C09D11/10 Division Original application number Priority item 2004.4.20 JP 124799/04; 2004.1.50 JP 322932/04 Abstract The purpose of the present invention is to provide a It is possible to eliminate the problem of delay in the occurrence of blocked images after printing and printing, as well as greatly improve the contamination of the feed roller at the time of double-sided printing, and the emulsified ink for stencil printing which is excellent in ink stability during high-temperature storage. The ink is characterized in that the ink contains 10 to 90% by mass of an oil phase and 90 to 10% by mass of an aqueous phase, the oil phase contains a pigment as a colorant, and the aqueous phase contains a solid component relative to the total mass of the aqueous phase. The polyvinyl pyrrolidone having a K value equal to or lower than 30 is calculated to be 1.0 to 6.0% by mass. Slavs 1. An emulsion ink for stencil printing, characterized in that the ink contains 10 to 90% by mass of an oil phase and 90 to 10% by mass of an aqueous phase, and the oil phase contains a pigment as a colorant, and the aqueous phase contains Polyvinylpyrrolidone having a K value equal to or lower than 30 in terms of solid content of 1.0 to 6.0% by mass with respect to the total mass of the above aqueous phase. International Application International Publication Entering Country Date Patent Agency Beijing Liu Shen Law Firm Office Address Agent Zhang Pingyuan Zhao Renlin