Thermally sensitive recording medium
US6432874B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | May 17, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermally sensitive recording paper having a recording surface which when a postage stamp or a revenue stamp is adhered to the recording surface requires at least ten cycles of a removal test procedure to remove at least one third of the adhered surface of the stamp from the recording surface of the thermally sensitive recording paper, wherein the removal test procedure comprises adhering the postage stamp or revenue stamp to the recording surface of the thermally sensitive recording paper, hanging the recording paper over an iron bar of about 8 mm diameter with the postage stamp or revenue stamp on an outer surface of the recording paper, adjusting the recording paper such that equal lengths are on either side of the iron bar, attaching to one end of the thermally sensitive recording paper a weight of about 500 g, holding the other end of the thermally sensitive recording paper by hand and carrying out a pull down ant put back cycle motion of the hand to move the postage stamp or revenue stamp over the iron bar until at least a portion of the postage stamp or revenue stamp is removed from the surface of the recording paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.