User`s manual

a dot-by-dot "guide" to each letter or image. The LaserWriter II then activates the laser, and
the pulses of the beam match the map dot for dot.
Through a series of mirrors, the laser light is reflected onto a rotating photosensitive drum.
The drum has a negative charge. When the laser light scans the drum, it gives what will turn
out to be printed areas a neutral charge, leaving the surrounding areas negative.
The toner is also negatively charged. The drum rotates through it, and the toner particles stick
to the neutral (black) areas but avoid the negative (white) areas.
Paper acquires a positive charge when it enters the printer. Opposites attract, so the negatively
charged toner jumps onto the paper when the drum rotates over it.
The paper then passes through the fixing rollers, which generate a temperature of about 400
degrees Fahrenheit to fuse the dots onto the paper.
The LaserWriter II forms 300 dots per inch (90,000 dots per square inch), or about 7.4
million dots per page. That's why your finished copy looks as good as it does. And once the
printer has the bitmaps in its memory, it can produce page after page at a rate of about eight
per minute.
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Appendix E: Specifications and Parts List
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Specifications
Marking engine
Canon LBP-SX laser-xerographic.
Controller
LaserWriter IInt controller hardware contains an 11.5 MHz 68000 CPU, 1 MB of ROM, 2 MB
of RAM, LocalTalk interface, RS-232 serial interface, and Apple Desktop Bus(tm) (ADB).
LaserWriter IIntx controller hardware contains a 16.7 MHz 68020 CPU, 1 MB of ROM, 2 MB
of RAM (expandable to 12 MB), LocalTalk interface, SCSI interface, RS-232 serial interface,
Apple Desktop Bus (ADB), and one slot for ROM expansion.
Print quality
300 dots per inch for text and graphics.
Apple fonts
ITC Avant Garde, ITC Bookman, Courier, Helvetica, Helvetica Narrow, New Century Schoolbook,
Palatino, Symbol, Times, ITC Zapf Chancery, and ITC Zapf Dingbats.
The LaserWriter II supports printing in plain, bold, italic, and bold italic, with additional
styles depending on the application.
Font sizes are limited only by the resolution of the printer and the size of the paper.
The LaserWriter II can support additional PostScript fonts, whether from Apple or from other
suppliers.