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Compensating Developer for High Resolution Emulsions

IP.com Disclosure Number: IPCOM000092952D
Original Publication Date: 1967-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Dawson, FL: AUTHOR

Abstract

In manufacturing small photographic masks, small images usually have less density than larger images, resulting in a difference of exposure of the emulsion.

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Compensating Developer for High Resolution Emulsions

In manufacturing small photographic masks, small images usually have less density than larger images, resulting in a difference of exposure of the emulsion.

A developer system can be formulated which partially compensates for differences in density between large and small image areas. The system involves two baths, one bath containing a developing agent and the other an activating alkali. The formulas are: A. P-Methylaminophenol Sulfate 50 grams

Sodium sulfite (Anh) 50 grams

Potassium bromide 5 grams

Water to make 1 liter

B. Sodium Metaborate 50 grams

Water to make 1 liter.

For use, dilute 200 cc of solution A to 1 liter water and 200 cc of solution B to 1 liter water separately. Develop two minutes in solution A, then two minutes in solution B at 68 degrees F.

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