HID HDPii User Manual page 299

Defrag Abbreviation for defragmenting. The process of positioning the
data in contiguous sections on a hard drive so that it uses space
more efficiently.
DIP switches (Dual A small array of mechanical switches installed on the Board that
In-line Package can be configured to change Printer operations including
Switches) providing a variety of self-tests.
Direct-to-Card (DTC) The Direct-to-Card printing process prints digital images directly
Printing onto any plastic card with a smooth, clean, glossy PVC surface.
Dither A system of distributing dots to control the hue, brightness and/or
saturation. In monochrome printing, this controls the brightness.
In color printing, Dithering can supply a larger color gamut than
non-Dithering. In the Driver, Dither modes can be selected to
provide better image quality depending on the type of image to be
printed.
Dongle A peripheral that attaches to a port to act as a key for an installed
application. The PC is able to run that application only when the
dongle is installed. Typically, it works as a pass-through device
and is connected in serial to the parallel cable.
Dot The smallest unit of an image that the Printer is able to produce.
The smaller the dot, see dot pitch, the sharper the image.
Dot pitch A measurement of image sharpness denoting the width of the
dots that makes up a pixel. The smaller the pitch, the sharper the
image.
Download The transfer of a data file from one device to the other over a
network or cable, typically from the Internet to a PC.
DPI (Dot Per Inch) A measurement of the Printer resolution indicating how many dots
a Printer can produce in a linear inch.
DRAM (Dynamic A microchip based volatile memory storage device. The Printer
Random Access uses this to Buffer a print job, transferred from the PC, until the
Memory) Printer is able to process the packet.
Driver Software utility installed in Windows, that interfaces an application
to rasterize image data and include command codes so the
Printer can process the file.
Duplex Printing Printing on the front and the back of the card.
Dwell Time The speed at which the card moves across the Transfer Roller,
measured in seconds/inch (sec/in). This can be adjusted in the
Driver to ensure adhesion and card flatness.
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