Canon CXDI-55C, Service Manual

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2. Installation
83
(12) Operation Unit Gamma Correction
1) Purpose
This procedure is performed so that the image that is printed out or displayed on a high-
definition monitor conforms exactly to the exposure image on the operation unit.
2) Notes
2-1) The procedure in “Linearity Check of Transfer Image Density” must be completed.
2-2) If image adjustment for the printer or high-definition monitor has not been made, use
the “Gamma Correction Calculation Tool” in order to correct the gamma of high
definition monitor image to be a same as printer image.
2-3) Gamma correction is an image correction process for monitors and film. It is different
from the contrast setting or grayscale setting.
This procedure is simply a visual adjustment. As a result, differences may occur
depending on the operator performing the procedure. Therefore, be sure to consult
with the responsible technician before performing this adjustment.
2-4) To make the gamma of operation unit adjust in detail, use the “Gamma Correction
Calculation Tool”.
3) Preparation
The Option button used in gamma correction is normally hidden. Edit the MenuPara.ini
file to display.
3-1) Open MenuPara.ini file.
3-2) Make the following changes, and overwrite the file.
Use Search in Edit to find OptionDlgBth.
Select Customize.
OptionDlgBtn = 0 Í Change to 1.
(0: Don’t display; 1: Display)