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:
May. 25, 1982
Filed:
Mar. 17, 1980
Joseph S Racciato, San Diego, CA (US);
Merck & Co. Inc., Rahway, NJ (US);
Abstract
A method of printing using polysaccharide gum S-88 as a thickening agent for printing pastes has been developed. The S-88 gum is gellable in the presence of about above 6% to 50% electrolyte. The gelling characteristic of the gum is useful in both single- and multi-phase print systems. The single-phase print system uses a print paste composition containing the S-88 gum together with about 1-6% concentration of electrolyte which, when applied to a substrate, and when the overall moisture content drop (by such methods as heating, etc.) results in a concomitant increase in electrolyte concentration sufficient to cause gelation. The multi-phase print system uses the electrolyte in one phase and the gellable gum in another; i.e., the electrolyte-containing paste or solution with concentration of 6-50% electrolyte is either impregnated on or in the substrate or is present in the printing paste which is applied before or after the S-88 gum-containing paste.