Automatic processor for offset plates

Details Automatic processor for offset plates Automatic processor for offset plates

1974-11-05

1976-10-05

Scott, Samuel

Machine element or mechanism

Mechanical movements

Rotary to or from reciprocating or oscillating

74 25, F16H 2118

Patent

active

039837580

ABSTRACT:
An automatic integrated processor which sequentially develops, washes and, if desired, applies gum to the exposed surface of an offset photolithographic plate in appropriately separated processing stages. The exposed surface of the plate is subjected to a linear, reciprocating rubbing action by plural sponges, which rubbing action produces results surprisingly similar to those produced by a manual rotary action. A fully assembled processor of this invention requires only that it be connected to a water supply, a source of power, and to a reservoir for used, waste fluids. A single electric motor is adapted (a) to drive plural pairs of coupled drive rolls, (b) to reciprocate the sponges in frictional contact with a generally horizontal offset plate and (c) to agitate angularly disposed containers for developer and gum. The translation of the rotary motion of the electric motor to linear reciprocation in mutually orthogonal planes is effected by direct rod-actuated drives with swivel rod-ends. The fully assembled processor may be transported through a standard 36" wide doorway, eliminating the drawbacks characteristic of machines which are to be assembled at the installation site.

REFERENCES:
patent: 921363 (1909-05-01), Chrysler et al.
patent: 1829305 (1931-10-01), Sneed
patent: 2567974 (1951-09-01), Scott
patent: 2685260 (1954-08-01), Auger
patent: 2844965 (1958-07-01), Stelljes et al.

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