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:
Jan. 03, 1978
Filed:
Mar. 31, 1976
Yujiro Kosaka, Tokyo, JA;
Masaru Uemura, Tokyo, JA;
Hitoshi Kuroki, Yokohama, JA;
Kanji Otomo, Machida, JA;
Yoshiaki Terauchi, Ichikawa, JA;
Yasuo Arai, Kawasaki, JA;
Abstract
A heat printing sheet having a pattern of a hot melt ink composition on a base, the improvement comprising using a hot melt ink composition which comprises 5-60 wt. parts of a base polymer of ethylene-vinyl acetate copolymer having 5-50 wt. % of the vinyl acetate content and 4-1000 g/10 min. of a melt index or a mixture of said ethylene-vinyl acetate substituted with 10-60 wt. % of the other polymer; and 20-80 wt. parts of a tackifier selected from terpene resins, hydrogenated dicyclopentadiene resins, lower styrene resins, rosins, rosin polyol esters, hydrogenated rosin and rosin polyol esters and alicyclic hydrocarbon resins and 0.1-30 wt. parts of a pigment or dye, and the hot melt ink composition is melted at 80.degree.-250.degree. C and is coated on an engraved roll and is instantaneously printed on a base of synthetic polymer film having 10-100 of a thickness and smooth surface under 0.5-10 Kg/cm.sup.2 (gauge) to form the pattern of the hot melt ink composition having 10-3000 of a thickness.