Panasonic KX-P8420 用户手册

2.KX-P8420 Color Calibration methods

Output from color print devices is subject to changes in temperature and humidity, and is prone to drift over time, with

a resulting loss in color

predictability. Where color accuracy and consistency are crucial, regular

calibration of the KX-P8420 is necessary. The color output of your

KX-P8420 color printer is adjusted using three

different methods: Bias

Adjustment, VisualCal, and ColorWise Color Adjustment.

Used to adjust the overall color density. The overall density drift slightly as the number of printed pages increases.

Especially, the overall density tends to increase gradually as the number of pages printed for current Imaging Unit

increases. Bias adjustment is used to compensate for this kind of density drift. If you think color output has become

too dark or too bright compared to previously printed pages, perform the Bias Adjustment.

It is also recommended

that you perform the Bias Adjustment after replacing the color imaging unit and/or the toner cartridge(s).

Used to optimize the printer’s range of color density and to adjust gray balance. If you think the gray color in a printed

image does not appear to

be a pure gray, perform the VisualCal after performing the Bias Adjustment.

Used to adjust the overall brightness of color output and saturation of

each color. Perform the Color Adjustment

after the Bias Adjustment and

VisualCal calibration to adjust color output to your preference.

Please note that Bias Adjustment and VisualCal is for calibrating the printer to obtain the best color performance

while color adjustment is for adjusting the color to the preference. Please be careful in doing color adjustment

because adjusting to the preference for a certain purpose does not always works well for the other purpose. It is

more recommended to adjust color by using driver setting or Application feature than using Color Adjustment.

- You cannot perform VisualCal or ColorAdjustment if the printer display error or warning message(s). If you

encounter the message(s), be sure to troubleshoot them in advance.

- You cannot perform VisualCal or ColorAdjustment while you are opening KX-P8420 WebTools. Please close

WebTools in advance.

- If you unintentionally enter incorrect value(s) during VisualCal or ColorAdjustment, you may see the unexpected

color output quality. In this case, Reset or redo VisualCal or ColorAdjustment.