Panasonic Kx Ps8100 Operating Instructions Manual

171 Color Calibration
Bias adjustment
The printer’s Bias Adjustment feature provides basic control over the 
printer’s color production. The Bias Adjustment screens, accessible via the 
printer panel, allow you to override the printer’s current toner density and 
brightness settings.
Using the Bias Adjustment and calibration offset controls, you can increase 
or decrease the density of cyan, magenta, yellow or black, and increase or 
decrease the overall brightness of all toner colors.
To perform Bias...

172 Color Calibration
The current density setting for each color is indicated by the line 
enclosure on the Color Calibration Page.
Color Calibration Page:
Current color density settings 

173 Color Calibration
To compare current setting with the color density samples:
1Compare the current color density settings on the Color 
Calibration Page with the color density samples on the 
Color Calibration Card to see if they match.
Place the Color Calibration Page on at least 2 sheets of clean white 
paper in a well-lighted area.
•If they match, then you do not need to adjust the color density 
and you may proceed with any operation you wish to perform.
•If they do not match, proceed to “To...

174 Color Calibration
To perform Bias Adjustment:
1aIf you wish to adjust the density for all colors 
simultaneously, perform the following, then go to step 2.
1) Repeat steps 1 through 3 in “To print a color 
calibration page:” on page 171.
“Calibration Offset” is displayed in the printer LCD panel.
2) Press the ENTER button.
“0*” (–5 to 5) is displayed in the printer LCD panel.
3) Press the s/CONTINUE or Ú/CANCEL button to 
darken/lighten all the colors.
To make the color density setting of the Color...

175 Color Calibration
4) Press the s/CONTINUE or Ú/CANCEL button to 
darken/lighten the cyan color.
To make the color density setting of the Color Calibration Page 
darker or lighter by 1 level, increase or decrease a value of the 
CYAN density by 3 by pressing the 
s/CONTINUE or 
Ú/CANCEL button.
For example when the CYAN density is 0:
•If you wish to make the density setting darker by 1 level:
—Select 3 by pressing the 
s/CONTINUE button 3 times.
•If you wish to make the density setting lighter by 1...

176 Color Calibration
VisualCal, 30% match calibration
VisualCalTM is a calibration method that allows you to calibrate your printer 
to an ideal color output standard.
The calibration calculations performed by the controller software are based 
on a series of values entered through the printer panel. The values used in 
the calculations are determined by evaluating toner densities and color 
combinations produced on two specially designed calibration pages printed 
from the printer panel.
The first...

177 Color Calibration
The following procedure outlines how to calibrate the printer using 
VisualCal.
To perform VisualCal calibration:
1From Ready or Ready(Sleep), press the MENU/EXIT 
button and then press the s/CONTINUE button 
repeatedly to advance to the Visual Calibration menu. 
Press the ENTER button.
2When the screen displays Endpoint Page on the first 
line and Print on the second line, press the ENTER 
button.
Wait for the VisualCal Limits and 30% Match page to be printed. 
You will use this...

178 Color Calibration
3When the screen displays Black Low, begin the 
process of specifying Low and High values for each of 
the four toner colors, and a value for the 30% Match.
Follow the instructions provided on the Limits and 30% Match page.
For startpoints and endpoints:
—Locate the leftmost circle you can distinguish from its background. 
For best visibility, view the page at an angle under normal lighting 
conditions. Position the page over several sheets of white paper. 
For 30% match (bottom...

179 Color Calibration
NOTE:
•Zero (0) and 9 are unacceptable values for color calibration. If 
any of the entered values for any colors are 0 or 9, the Limits and 
30% Match page is reprinted automatically. Reenter values for all 
color rows starting with Black Start (Black Low).
When you have finished entering all values, the Gray Balance Page 
menu appears.
4To print the Gray Balance page, press the ENTER 
button.
The Gray Balance page is printed and Best Patch (row) appears.
VisualCal
Gray Balance
The...

180 Color Calibration
5Select the row number of the most acceptable patch. 
Use the Ú/CANCEL button or the s/CONTINUE button 
to select a value (+4 to –4). Accept a value by pressing 
the ENTER button. (See the example below.)
Best Patch (col) appears.
6Select the column number (R.Y.G···) of the most 
acceptable patch. Use the Ú/CANCEL button or the 
s/CONTINUE button to select the column. Accept a 
value by pressing the ENTER button. (See the example 
below.)
The new Gray Balance page is printed. Best...