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. 12, 1992
Filed:
Jan. 28, 1991
Applicant:
Inventors:
Leonard Slevin, San Diego, CA (US);
Mark S Hickman, Escondido, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 22 ; 106 25 ; 106217 ;
Abstract
Inks for printing on plain papers are provided for thermal ink-jet printers. The inks comprise a vehicle comprising about 5 to 20 wt % of a glycol or glycol ether and the balance water, about 1 to 6% of a dye, and about 0.1 to 1% of an alginate. The alginate increases the viscosity to increase the frequency of operation. Unexpectedly, good print quality associated with lower frequency of operation is retained at the higher frequency of operation.