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. 29, 1990
Filed:
Mar. 02, 1989
Applicant:
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503207 ; 427152 ; 503200 ; 503214 ; 503226 ;
Abstract
A thermosensitive recording material is disclosed, which comprises (a) a support, (b) an undercoat layer formed on the support, which comprises spherical hollow particles made of a plastic material having a glass transition temperature ranging from 40.degree. C. to 90.degree. C., the spherical hollow particles having a mean particle diameter of 0.20 .mu.m to 1.5 .mu.m, and a voidage of 40% to 90%, and a binder resin in an effective amount, and (c) a thermosensitive coloring layer formed on the undercoat layer, which comprises as the main components a leuco dye and a color developer capable of inducing color formation in the leuco dye upon application of heat thereto.