QMS 860, User Manual, Page: 377 / 398

Raster Graphics
The system of forming graphics using a bitmap, or grid of
small dots, is called raster graphics. The term “raster” denotes the Cartesian
grid system in which the dots are arranged. Bitmaps can define images,
shapes, or characters created with a specific number of dots per inch. See
also bitmap.
Resident Fonts
Fonts permanently stored in the printer’s memory; also
called internal fonts.
Resolution
A measurement of the dots per inch (dpi) in output material, either
printed or visual, as in a high-resolution monitor. Your printer features a 300
and 600 dpi resolution.
ROM
An acronym for Read Only Memory, ROM is a more stable kind of
memory than RAM. Information stored in ROM is retained and can be
retrieved each time the machine is activated.
RTS
An acronym for Request to Send. RTS is a signal sent from the host to the
printer indicating it is ready to send data.
Screen
The pattern in which dots or lines are placed on a page to create colors.
Screen Angle
The angle at which a screen is printed. See also screen.
Select Key
The control panel key used to access a menu or to choose a
displayed selection or option.
Serial
A data transmission technique that sends each bit sequentially over a
single line. It is normally used to send one bit at a time for data
communications.
Serial Interface
This is a connection between computers and printers in
which character information is transmitted sequentially as contrasted with
parallel transfer.
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