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CHAPTER 1
LaserWriter Select 310 Hardware
2
The LaserWriter Select 310 printer is an economical laser printer that supports
PostScript
™
Level 1 functions. It executes page descriptions written in the PostScript
language, and it produces printed pages at a rate of up to five pages per minute. The
raster printing technology is xerographic, black and white, and write black at 300 dots
(pixels) per inch. The printer is dedicated, and it operates with Macintosh computers
using the RS-232 serial port or with DOS-based IBM personal computers using the
Centronics parallel port. It is available in 110-volt and 220-volt versions.
This chapter describes:
■
hardware features of the printer
■
communication ports
■
status lights
■
memory capabilities
■
basic operation
■
page types
■
paper handling capabilities of the printer
The LaserWriter Select 310 printer supports the entire PostScript language specified in the
first edition of the
PostScript Language Reference Manual
. In addition, it has features,
capabilities, and operating modes not present in other PostScript language printers. You
may access these additional facilities by executing special PostScript operators that exist
only in the LaserWriter Select 310 printer’s PostScript interpreter.
Unlike other Apple LaserWriter printers, the LaserWriter Select 310 printer does not have
a rotary selection switch to allow you to select different communication protocols.
In addition, the printer does not have EEROM (electronically erasable ROM). This means
that any of the interpreter’s default parameters that are changed using
statusdict
operators are not placed in nonvolatile storage and will not persist across power cycles.
However, for parameters that are expected to change infrequently, a portion of RAM may
be used to simulate EEROM.
Table 1-1 lists functional features of the LaserWriter Select 310 printer.