Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1989-06-06
1990-05-22
Van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
101333, 264112, 4283155, 4283159, 4283213, 428909, B41K 138
Patent
active
049276956
ABSTRACT:
An improved microporous marking structure has a layer of a microporous material containing a marking fluid and an absorbent backing layer superposed thereon which shortens processing time by absorbing excess marking fluid from the microporous layer. The marking structure according to the invention may be advantageously used to make a self-linking hand stamp. No lengthy step for removing excess ink from the microporous layer is needed.
REFERENCES:
patent: 3971315 (1976-07-01), Hansen
patent: 4306498 (1981-12-01), Fujimura
Hedgecoth David L.
Key Jonnie L.
Moss Frank R.
Ooms Willem
Ponter Robert E.
Porelon, Inc.
Van Balen William J.
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