Kodak VERSAMARK DS5110 Operator's Manual page 63

Glossary
tach 1. A measure of distance, as measured by the tach encoder.
2. A signal emitted by the tach encoder in response to the speed of the
substrate.
tach encoder A device that detects movement of the substrate and
generates tach signals in relationship to substrate speed.
test pattern A special image that can be printed by the printer operator
repeatedly to examine print quality.
test print A series of printed characters that the printer operator
compares against the text produced by the printer to troubleshoot printing
problems.
umbilical The part of the printer that transfers the fluids and signals
between the fluid system and the printhead through an assembly of hoses
and wiring encased within a flexible, protective shield.
voltage defect A printing problem that is caused by an improper
voltage setting.
web A continuous sheet of substrate.
Operator's Guide