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US Patent 6659003 - Stencil plate
US Patent Issued on December 9, 2003
Estimated Patent Expiration Date:
September 27, 2022Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
September 27, 2022Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA perforation pattern is provided with a stencil plate, which is decreased in perforation configuration irregularity and has an adequate size of perforations. The stencil plate is produced from a heat sensitive stencil sheet having a heat shrinkable film by selectively heating the film with a heating device to form independent dot perforations corresponding to an image in the film, and each of the perforations has a through hole and a rim surrounding the through hole and bulging on a heated side of the film, and the rim has a height that satisfies the following formulae (1) and (2):where h denotes the height (μm) in reference to the surface of the film before heated, px and py respectively denote pitches (μm) in main and sub scanning directions of the heating device. | InventorsAssigneeApplicationNo. 10/255712 filed on 09/27/2002US Classes:101/128.21Laminated and/or plural sheets and/or coated base and manufactureField of Search101/127, Stencils101/128.21Laminated and/or plural sheets and/or coated base and manufactureExaminersPrimary: Funk, Stephen R.Attorney, Agent or FirmUS Patent References5243906, Thermal stencil master plate and method for processing the sameIssued on: 09/14/1993 Inventor: Okusawa5384585, Thermal stenciling device Issued on: 01/24/1995 Inventor: Okumura 5522313, 5559546, Stencil perforating method, stencil perforating system, and stencil printing machine Issued on: 09/24/1996 Inventor: Sato5617787, Process for perforating stencil printing sheet Issued on: 04/08/1997 Inventor: Takita, et al.6130697Thermal master making device Issued on: 10/10/2000 Inventor: Yokoyama, et al. International ClassesB41C 1/14 (20060101)B41N 1/24 (20060101) Foreign Application Priority Data2000-05-19 JP |
