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:
Mar. 23, 1993
Filed:
Jan. 18, 1991
Akihiko Ohno, Ibaraki, JP;
Akira Iwai, Ibaraki, JP;
Oji Yuka Goseishi Co., Ltd., Tokyo, JP;
Abstract
A support for a dye transfer type thermosensitive printing sheet is disclosed, which comprises a porous film base having a biaxially stretched film of a thermoplastic resin containing an inorganic fine powder having adhered thereon a thermoplastic resin film having a centerline-average roughness of not more than 0.5 .mu.m as a surface layer on which a dye transfer type thermosensitive printing layer is to be provided, said surface layer having a thickness of from 0.3 to 1.5 .mu.m and a Bekk's smoothness of from 2500 to 7000 seconds, and said support having an opacity of not less than 70%, a density of not more than 0.91 g/cm.sup.3, and a compression ratio of from 15 to 35% under a stress of 32 kg/cm.sup.2. A dye transfer type thermosensitive printing sheet using the support of the invention has excellent surface smoothness and exhibits considerable compressibility and, therefore, shows improved adhesion or contact with a printing head to form an image rich in gradation.