wallPen E2 - Calibration Process

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Calibration

9.2 Calibration

The wallPen E2 uses four (optionally expected to be available from Q4/2021 five) single

printheads to print colors CMYK (W). Since these printheads are mounted separately

and they must be calibrated to each other in order to achieve optimum printing results.

The calibration according to these instructions should only be performed each time a

printhead has been disassembled / assembled.

The used Ricoh GH2220 printheads have two offset nozzle rows, each with a pixel

density of 150 DPI. Their arrangement, staggered by half a nozzle distance, achieves

300 DPI in the printed image.

To easy judge and align the printheads to each other, a calibration image is used. To

calibrate and rate the printheads, a wallPen calibration image is printed which shows

vertical and horizontal adjustments in all colors. Please download the latest calibration

image ("E2-Calibration.tif" or "E2-Calibration_3x6_1x_300x300_bi.wallpen") from the

"Knowledge Base / Downloads"-Section in https://service.wallpen.com.

The "E2-Calibration_3x6_1x_300x300_bi.wallpen" file might be printed directly on the

machine, but if the E2-Calibration.tif file is used, process this image in the wallPen

Processor by setting all four values for "Horizontal Channel Shifting" to 0 (zero) in the

settings under "Presets/Edit/Horizontal Channel Shifting" dialog:

Then drag & drop the image "E2-Calibration.tif" is loaded into the processor and the

values for Intensity, ICC and print parameters are to be set as shown in the figure: