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Callout Area on the screen Information or capability that the area provides
2 Calibration
Information
Lists the last color-plane registration (CPR) page count, the last CPR page-count
date, the last page count (in engine cycles) for DMAX/DHALF, and the last DMAX/
DHALF page-count date.
Color plane registration occurs when new print cartridges are installed to
compensate for any slight variations that might occur in cartridge circumference.
DMAX is a density calibration of each print cartridge color at 100% coverage;
DHALF is also a density calibration of each print cartridge color, but as a halftone
instead of a full color. During halftone printing, the dots of toner are spread out, and
coverage of the toner is less than 100%.
3 Color Density Lists the cyan, magenta, yellow, and black (CMYK) values for highlights, midtones,
and shadows.
4 Parameters For color devices, specific engine settings related to the printing or
electrophotographic process are critical in identifying device status and function.
The electrophotographic parameters, which are used to detect, diagnose, and track
print-quality defects, appear in a 272-cell binary array that contains the settings
registered by the device engine. These registers also appear at the bottom of the
Diagnostics Page screen.
Table 2-6 Diagnostics Page (continued)
18 Chapter 2 Viewing product status from the HP EWS Information screens ENWW
Information