with a squeegee. Put the ferrotype
plate on a dryer until the copy is dry.
The following is a summary of the joint and
(d) If Aero enlarging paper or 1020 is used,
individual operations required of both transmit-
dry the paper between two blotters,
ting and receiving operators for the satisfactory
not on the ferrotype plate.
transmission and reception of facsimile copy.
c. Common Photographic Faults (figs. 21, 22, and
Item
23). The following table lists common photo-
Both
operators
No.
graphic faults and their causes:
1
Check equipment connections.
Cause
Fault
2
Turn transceiver power ON-OFF switches to the
ON position.
3
Establish voice communication (radio or wire).
Overdevelopment; developer
1. Print too dark
4
Decide what method of transmission and reception
Contact print-
too warm.
is required.
exposure too great; negative
too weak or too thin.
Underdevelopment; developer
2. Print too light
Receiving operator
Transmitting
Operator
exhausted, developer too
Contact print-expo-
cold.
Places copy on transmit-
5
Places recording paper
sure not sufficient; negative
ter drum.
on receiver drum.
too dense.
Sate wedge at 8 db for
6
Developer too cold; long de-
3. Gray whites through-
negative reception, 15
velopment; paper fogged.
out picture.
db for positive photo-
Underexposed contact print
4. Gray granular appear-
graphic reception, or
and long development; old
ance.
maximum usable con-
paper; paper kept in damp
trast for direct record-
place.
ing paper.
Developer solution too cold,
5. Brown or green tones
Adjusts GAIN control
7
Sends maximum signal,
badly discolored, exhausted,
for proper receiving
then maximum and
or contaminated.
minimum signals.
level and checks con-
Developer exhausted; prints
6. Brown and red stains
trast.
not moved about enough
Operates PHASE switch
8
Sends phasing signals
during fixing.
to phase receiver.
Air bubbles on the surface of
7. Round white spots
Sends copy
9
Receives copy.
the paper. Prints not moved
about enough during devel-
opment and fixing.
Milky fixer solutions; incorrect
8. White deposits on sur-
face of prints.
mixing or impure chemicals.
9. Blisters on surface
Print creased or broken while
washing; temperature dif-
ference between solutions
and wash water too great.
Insufficient washing between
10. Yellow stains
developing and fixing; long
development; print not kept
moving when first immereed
in fixer; iron in wash water,
probably from rusty pipes;
print exposed to air too much
while developing, especially
in warm weather. To rem-
edy, try using fresh developer
solution.
