TM 5-3610-257-14
g.
Halftone exposure control.
NOTE
•
To establish basic main exposure time units with the exposure control, instrument will require only
two separate exposures.
•
A magenta contact screen (negative) should be used for this test setup.
•
A gray scale is used to make this test.
(1)
Locate step on gray scale where 50% dot (0.50 density) should be for best plate and printing section
condition. This point will change with type of paper, type of press, and desired effect. For this test, choose the step that is
normal.
(2)
With digital densitometer, read density of this step.
(3)
Make note of density and step number.
3-31
