Variable volume etching machine

Details Variable volume etching machine Variable volume etching machine

1990-10-04

1991-06-11

Bueker, Richard

Adhesive bonding and miscellaneous chemical manufacture

Differential fluid etching apparatus

With microwave gas energizing means

156625, 156DIG111, 118300, C23F 102

Patent

active

050229494

ABSTRACT:
An etching machine having an upper frame member with side members connected together to define an etching chamber therein. The upper frame member having open top and bottom sections, wherein the top section is covered by a movable cover plate which moves between a first closed position in which the top section is closed to a second open position in which the top section is opened to expose the etching chamber. Within the etching chamber, rotatable cylinders, with cupped portions on their outermost surface, engage mordant within the etching machine to splash mordant on a rotating etching plate. Positioned underneath the upper frame member and the rotatable cylinder is a lower tank member for holding a supply of mordant. The lower tank section has an open top portion so that the mordant contained within the lower tank section is in fluid communication with the etching chamber and can contact the cupped portions of the rotatable cylinders. To vary the mordant capacity of the etching machine according to the mordant requirements for a particular etching, the positioning of the lower tank member, with respect to the upper frame member and the rotatable cylinders, is adjusted along an upright axis.

REFERENCES:
patent: 1686968 (1924-12-01), Harber
patent: 2293201 (1936-01-01), Gaebel
patent: 3078857 (1960-06-01), Guenst
patent: 3182671 (1962-12-01), Vorie
patent: 3388023 (1966-10-01), Benton et al.
patent: 3527580 (1967-03-01), Bonlie
patent: 4426251 (1984-01-01), Ida

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