Sustained release ink dispenser

Details Sustained release ink dispenser Sustained release ink dispenser

1990-01-02

1992-08-11

Wityshyn, Michael G.

Coating apparatus

Solid applicator contacting work

Pads or absorbent or porous applicators

29132, 101333, 101348, 118270, 4283213, 4283155, 4283157, 428909, B05C 100, B41K 154

Patent

active

051369680

ABSTRACT:
An ink dispensing device is disclosed wherein the ink releasing member comprises two layers that serve different purposes. The layer which contacts a printing font is made of a porous material that has an open pore size of less than 30 microns and a porosity of 40% to 85%. The second layer is adjacent to the contact layer and is made from an elastic foam with larger pore size, in the range of 80 microns to 1000 microns and a porosity of greater than 70%. The second layer is impregnated with ink and acts as a reservoir for the first layer, the latter serving as a metering member.

REFERENCES:
patent: 3336244 (1967-08-01), Rockoff
patent: 3491685 (1970-01-01), Tramposch
patent: 3812782 (1974-05-01), Funahashi
patent: 3851619 (1974-12-01), Cofield, Jr. et al.
patent: 3971315 (1976-07-01), Hansen
patent: 4246842 (1981-01-01), Williams et al.
patent: 5049432 (1991-09-01), Ooms et al.

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