control unit. The printed circuit board (PCB) that supplies the printer’s connection path to the customer’s network. The control unit also gives commands to the print engine dc controller PCB to manipulate the motors, solenoids, and actuators during a print cycle. See also actuator, solenoid.
controller. See control unit.
corona. See separation corona.
customer
customer engineer (CE). An IBM representative who services IBM products at the customer’s site.
cutout. An area of the printer that is shaped (“cut out”) to hold a connecting mechanism such as a tab on another part of the printer.
D
daemon. A software program that runs unattended.
danger notice. A notice used to call attention to a condition that is potentially deadly or extremely dangerous to people.
dedicated file server. In a local area network (LAN), a file server whose function is to provide services to the users of the network and to run the network operating system.
densitometer. An instrument that measures density according to a specified standard. Status T and XRite densitometers are two such color calibration devices.
density. A precise measurement of the light energy transmitted or reflected by a surface in the presence of a standard light source.
density control panel. The set of controls on the back of the printer that enable you to adjust the
density of any of the four colors: magenta, cyan, yellow, or black.
density detection sensor. A device on the printer containing a light source and a sensor. The density detection sensor measures the specific density of toner applied to known surface to regulate the quantity of toner applied during the print process. The reflectance of light on toner varies with the density and color of that toner. Thus the density detection sensor emits a specific amount of light on a toner patch and estimates the density of the toner patch by the amount of light reflected from the toner patch.
density gauge. A row of indicators on the printer’s density control panel. When you make a test print, the indicator on the gauge goes on to confirm the test pattern you chose for the test print: solid colors, solid white, gradient, horizontal lines, vertical lines, or grid pattern. See also gradient.
dequeue. To remove items from a queue. Contrast with queue.
desktop. In a graphical user interface (GUI), a computer representation of
desktop publishing (DTP). The use of a PC or other platform as an inexpensive production system for generating
dialog box. In a graphical user interface (GUI), an
diagnostic mode. A mode of operation in which the printer can check itself in case of a problem.
Direct queue. A storage area for the printer that supplies a direct connection to the printer. When you submit a job to the Direct queue, the printer accepts the job when it is ready to print the job. Jobs in the Direct queue are not stored on the printer’s hard disk and are not spooled. See also Hold queue, Print Queue, Printed queue, spooling.
discharging. The application of ac bias by the printer’s discharge roller to remove any charges remaining on the transfer drum surface after separation of the paper.
Glossary
