HP 220240 - Manual (Page 251)

PostScript language
A programming language designed to convey a description of a desired page
to a printer. It can describe a page containing any combination of text,
graphical shapes, and digitized images.
primary corona wire
A wire located inside the EP-S cartridge that places an electrical charge
on the photosensitive drum, preparing it to accept an image from the laser
beam.
printer controller firmware
The firmware that interprets the data in a print request according to
a specified data syntax, builds bitmaps of each page to be printed, and
forwards the bitmaps to the print engine, which produces the hardcopy
output.
print density
The relative thickness of the line used to print characters. The thicker the
line, the darker and denser it looks. The thickness of a line is known as
the ‘‘line weight.’’
printer software
The software that handles the communications between the process that
makes a print request (terminal), the process that provides resources (a
host), and the process that performs the printing service (a print queue).
protocol
A procedure or set of rules that controls the communication between
computers and peripherals. Also, a set of conventions between
communicating processes regarding the format and contents of messages
to be exchanged.
RAM
Random-access memory. RAM retains data only while power remains on.
Data is cleared from RAM when the printer is powered off. The DEClaser
2200 printer contains 1.0 MB of built-in RAM, which is expandable up to
4.0 MB with optional memory boards.
reset
A procedure that clears data in the print buffer and returns the printer
to the ready state. The printer operates using the settings stored in RAM.
These settings are loaded into operating memory when a reset is performed.
Glossary–6