Patent · US Expired

Thermally-responsive record material

US6294502A · kind A · utility

2Cited by

26References

10Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Mark Robert Fisher · Appleton, US
John Charles DeBraal · Kimberly, US
Guido Steffan · Odenthal, DE
Peter Wenzl · Cologne, DE

Key dates

Filing date	May 14, 1999
Grant date	Sep 25, 2001
Priority date	—
Expiry date	May 14, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41M5/3375
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The invention discloses a novel thermally-responsive record material comprising a support having coated thereon a thermally sensitive color forming composition comprising a chromogenic material, an acidic developer material and a certain carbamate component that does not include dodecyl-N-phenylcarbamate. The novel record material displays enhanced image intensity or improved thermal response.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.