The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2003
Filed:
Oct. 02, 2001
Hideyuki Kinoshita, Ibaraki-ken, JP;
Yasuo Yamamoto, Ibaraki-ken, JP;
Riso Kagaku Corporation, Tokyo, JP;
Abstract
A micro porous plastic sheet is stencil plate made by a method for stencil plate making of a stencil sheet for stencil printing under the following conditions: heat is provided to form a negative image with TPH at −30≦Tp−Tm≦300° C. (Tp is heating peak temperature and Tm is melting temperature (melting point) of the sheet) and in 10≦To×100/Ts≦80% (To is current-carrying time period and Ts is current-carrying cycle), micro pores are closed by the pressure for stencil plate making of 0.1≦P≦1.0 MPa, and the thermal shrinkage rate of the sheet measured by TMA is set to 1≦S ≦20% (S is a thermal shrinking rate of the sheet at a temperature 30° C. lower than the melting point TM).