Olivetti d-Color MF4003 Service Manual page 582

d-Color MF4003/MF3303
[1]
[7]
[5]
[1] Laser diode
[3] G2 lens
[5] G1 lens
[7] Polygon motor (M7)
(3) Laser emission timing
• When a ready signal is detected after the lapse of a given period of time after the print cycle has been started, a laser ON signal is output
from the base board.
• The laser ON signal triggers the firing of each laser light, which illuminates the index board via the polygon mirror, G1 lens, index mirror
(K), and Index lens. This generates an Index signal.
• This index signal has a function of keeping the same laser light emission timing per every one line in the main scanning direction.
• The index signal is generated with the K laser light only. The laser light emission timing for other colors is determined with reference to K.
(4) Laser emission area
Service Manual
[2]
[6]
[5]
P THEORY OF OPERATION > 1. d-Color MF4003/MF3303
[3]
[4]
[2] Return mirror
[4] Return mirror/1
[6] Return mirror/2
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P-8
Y119930-3