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4
HOW TO USE THE OPERATION PANEL
■ Steps to follow
Function
Item
Calibration
Color balance
adjustment
Color matching
On/Off selection
Brightness/contrast
adjustment
Purpose
CalibrationColor control
Corrects the exposure system's
characteristics and donor
sensitivity so that printing is
performed under constant
conditions.
When to adjust
- When the donor has been
replaced
- When 1 month or more has
elapsed since the last
calibration
- Before starting the color control
adjustment
Selects the proper color matching
function for the purpose.
Adjusts the brightness/contrast,
at time of machine installation or
when the monitor setting has
been changed.
Adjusts the color balance when
the colors on the monitor screen
do not match those of the
finished prints.
As a basic procedure, it is
recommended that the
adjustments be performed in the
following order: brightness,
contrast and color balance.
When the colors are unbalanced
to a great extent, the adjustment
work may be more efficiently
performed in the following order:
rough adjustment of brightness,
adjustment of color balanced,
fine adjustment of all parameters.
IMPORTANT:
● Before making adjustments using the color control function, perform the calibration to make
sure that the machine is in appropriate condition.
● The color control function may be used to produce prints in desired colors. After using the
function for that purpose, be sure to restore the normal settings for the next use.
● The sample image used for color matching should be one with easily identifiable transitions
between colors and gray balance. If the sample image is biased towards particular colors, the
color adjustment will also be biased towards those colors, resulting in inappropriate color
reproduction when printing other images.
● When accurate color matching is required, note the following:
● It the temperature was low during the night, let the machine stand for about 1 hour after
power-on before starting printing.
● If the room temperature has changed more than 5°C, repeat the calibration process.
4.12
Color Adjustment Procedures