FILM PROCESSING HIGH YIELD

Question 1

what is the development portion of the film processing?

what is sensitive?

Answer 1

takes silver ions and turns them into atoms

time and temp

Question 2

what are the developers?

Answer 2

Na carbonate

K carbonate

basic-pH 10-11
swells the gelatin binder and softens emulsion

Question 3

what are the two steps in fixation?

Answer 3

wet gelatin emulsion layer

harden emulsion

Question 4

what what is the wet gelatin emulsion layer in the fixation process? the hypo clearing agent?

Answer 4

clearing softens and allows unreacted ions to literally float away

acetic acid
pH 4

Question 5

what is the harden emulsion step?

fix time? agent

Answer 5

fixing allows for immediate viewing

2x clearing time
aluminum chloride

Question 6

summarize the processing of the film?

name the basic, neutral and acidic stages

Answer 6

wetting
development (basic)
stop bath (neutral)
fixation (acidic)
washing
drying

Question 7

what is significant about the auto processors?

Answer 7

lessens carcinogenic exposure to processing people

90 sec - 2 min from start to dried finished product whereas manual processing takes 1 hr until product is dried

Question 8

what are the post processing problems?

Answer 8

chromatic stains - yellow brown
black film- overdevelopment
clear film- never exposed