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:
Oct. 14, 1997
Filed:
Dec. 27, 1995
Masanori Torii, Tokyo-to, JP;
Abstract
The present invention provides a heat transfer printing sheet comprising a substrate sheet, and a thermally-expandable ink layer formed thereon, comprising as an expanding agent a thermally-expandable micro-capsule containing therein an easily-volatilizable hydrocarbon, and a binder resin having a number-average molecular weight of 1,000 to 30,000. The present invention also provides a heat transfer printing sheet comprising a substrate sheet, a release-property-controlling layer and a thermally-expandable ink layer comprising an expanding agent and a binder, in the mentioned order. The present invention further provides a process for producing raised images, comprising the steps of superposing, on an image-receiving sheet, a heat transfer printing sheet comprising a substrate sheet and a thermally-expandable ink layer formed thereon, heating image-wise the thermally-expandable ink layer and bringing the heat transfer printing sheet into pressure contact with the image-receiving sheet, releasing the heat transfer printing sheet from the image-receiving sheet, thereby separating image-wise the thermally-expandable ink layer from the heat transfer printing sheet and transferring it to the image-receiving sheet, applying light to the thermally-expandable ink layer which has been transferred image-wise to the image-receiving sheet to expand it, thereby obtaining raised images.