Correction Of Color Deviation; Transfer Control According To Environmental Changes (Room Temperatures And Relative Humidities) - Oki OKIPAGE8c Maintenance Manual

2.6

Correction of Color Deviation

OKIPAGE 8c is equipped with an array of I/D units which cannot be from generation of color
deviations. This mechanically caused color deviation is corrected electronically as shown
below.
(1) Color deviations to be corrected
1 Color deviation in the X axis (Positional error of the LED head)
2 Diagonal color deviation (Positional error of the LED head)
3 Color deviation in the Y axis (Positional errors of the I/D units and light receivers)
(2) Method of correction Print out the preset color chart, compare the printed color chart by
the original color chart, and enter the amount of color deviation of each color from the
operator panel or from the host computer. OKIPAGE 8c calculates correction values from
the entered values and changes the write timing of each color (cyan, magenta, and
yellow) relative to black.
2.7 Transfer Control according to Environmental Changes (Room Temperatures and
Relative Humidities)
OKIPAGE 8c measures the room temperature and humidity by the room temperature sensor
and the room humidity sensor, calculates an optimum transfer voltage according to the ob-
tained environmental conditions and realtime-controls printing with the optimum transfer
voltage.
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