Specifications

<4th/5th Mirrors Carriage>
•
The 4th and 5th Mirrors are mounted to their holder at right angles to
each other. They function to let the light reflected from the 3rd Mirror
and through Lens strike the 6th Mirror via themselves.
•
The 4th/5th Mirrors Carriage is moved in the X-direction (feeding
direction) to correct the conjugation distance (the distance between the
original and the surface of the PC Drum) according to the set zoom ratio.
Its drive comes from Lens X Direction Drive Motor M12 which turns a
cam. The rotary motion of the cam is changed to a reciprocating, or
straight-line, motion of the carriage through a link mechanism.
•
To ensure that a focused image of the original is reproduced on the
surface of the PC Drum when in an enlargement or reduction mode, the
conjugation distance must be greater than that when in the full size
mode. To accomplish this, the 4th/5th Mirrors Carriage is moved in the
direction of a greater conjugation distance.
•
There are three different types of cams available according to the focal
length of the Lens. When the Lens is replaced, the cam must also be
replaced with one appropriate for the focal length of the new Lens.
Lens Focal Length
(in mm)
Cam ID Marking Cam Part No.
213.50 to 214.35 − 1046-4823-02
214.40 to 215.20 0 1046-4821-02
215.25 to 216.10 + 1046-4822-02
Note: In the illustration below, if the 4th/5th Mirrors Carriage is located at the
full size position, it moves in the direction of the arrow ➡ for all
enlargement or reduction modes.
4th Mirror
5th Mirror
4th/5th Mirrors Carriage
Link Mechanism
Cam
Lens X Direction Drive
Motor M12
6th Mirror
Enlargement Side
Full Size
Enlargement/Reduction
M-44