Method and apparatus for developing and treating PS plates

Details Method and apparatus for developing and treating PS plates Method and apparatus for developing and treating PS plates

1980-04-15

1982-01-12

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

430302, 430306, 430421, G03F 702

Patent

active

043106161

ABSTRACT:
Method and apparatus for developing and treating PS plates in which the useful life of the treatment liquid is greatly enhanced. First and second developing baths and a gum coating bath are provided with the PS plates conveyed therethrough. The plates are squeezed between the first and second developing baths to remove treatment liquid. Treatment liquid is transferred from the second to the first developing bath and discharged from the first developing bath when the liquid in the first bath is beyond the normal limit of treatment ability for a single bath system. New treatment liquid is supplied to the second bath in proportion to the amount of treatment and the lapse of time.

REFERENCES:
patent: 3448720 (1969-06-01), Graham
patent: 3846816 (1974-11-01), Gaisser
patent: 3851662 (1974-12-01), Jessop
patent: 4081816 (1978-03-01), Geyken et al.
patent: 4215927 (1980-08-01), Grant et al.

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