TM 5-6675-325-14
3-3.2 Detailed.
The reader-printer is composed of three subsystems.
a.
Optical and mirror subsystem.
Magnifies and projects selected microfiche
frame for either viewing or printing.
(a) The exposure lamp is a 150 W light
by a 45-degree mirror.
The beam passes through the condenser lens, which
intensifies the light before it reaches the microfiche frame.
The microfiche is
carried in the microfiche frame assembly which is movable to allow selection of any
single frame within the microfiche.
The image then passes through the magnifier
lens where it is focused by the focus wheel.
(b) After being focused, the image is passed through a supplemental lens
which is mounted in a movable carrier.
The supplemental lens adjusts the image for
viewing and is of fixed focus.
3-4
