Automatic developing apparatus for photosensitive lithographic p

Details Automatic developing apparatus for photosensitive lithographic p Automatic developing apparatus for photosensitive lithographic p

1996-09-30

1997-12-23

Rutledge, D.

Photography

Fluid-treating apparatus

Having testing, calibration, or indicating

396622, 396627, G03D 302, G03D 313

Patent

active

057015422

ABSTRACT:
An automatic developing apparatus for photosensitive lithographic printing plates, includes a development vessel storing a plate developer and a replenishing apparatus for replenishing a predetermined amount of development replenisher in accordance with an electric conductance of the plate developer. The replenishing apparatus includes: an electric conductance sensor detecting the electric conductance of the plate developer; a delivery device delivering the development replenisher into the development vessel; a timer detecting an elapsed time from replenishment of the development replenisher; and a control device for setting a reference electric conductance and for controlling the delivery device to replenish the development replenisher when the detected electric conductance has fallen below the set reference electric conductance. The control device calculates a carbon dioxide exhaustion replenisher ratio for replenishing the development replenisher in accordance with the elapsed time and the predetermined amount of the development replenisher. The automatic developing apparatus is capable of maintaining the activity of the plate developer in a good condition over a long period of time by the ratio between the plate processing exhaustion and the carbon dioxide exhaustion.

REFERENCES:
patent: 4422152 (1983-12-01), Kaufmann
patent: 4882246 (1989-11-01), Ohba et al.
patent: 5053796 (1991-10-01), Ohba
patent: 5217848 (1993-06-01), Uehara et al.
patent: 5479233 (1995-12-01), Takekoshi et al.

Affiliated with

Also associated with

Rating

Automatic developing apparatus for photosensitive lithographic p does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic developing apparatus for photosensitive lithographic p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic developing apparatus for photosensitive lithographic p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1809324