Marker assembly
US6436501B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1998 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Feb 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24851
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Replacing silicone paper release sheet of known adhesive-backed roll-feed 50 micron polyester curable marker product with 90+ (pref. 100) micron plastics release sheet 12 enables A4 sheets to be printed in sheet-fed printers with reduced curling or multi-sheet feeding and enables release sheet to be made from economically desirable non-stress-relieved plastics, whereas thinner plastics release sheets (and the polyester marker backing 10) need stress relief to survive heat-curing of the printed material without unacceptable distortion. Preferred versions have spacing means 14, preferably a strip of adhesive tape, projecting from the surface of the release sheet 12 facing away from the printable marker 10 to facilitate separation of sheets from a stack thereof by maintaining air gaps between adjacent sheets in the stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.