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The printer is lightweight, easy to install, operate and maintain1 and
compatible with both EIA and ANSI standards.
In addition to the many standard features built into the Model 352,
there are many options and accessories that may be added to provide additional
capabilities.
1.3
PHYSICAL DESCRIPTION
Physically the Model 352 is compact and lightweight.
The printer
measures 22 inches wide, 18 inches deep and 8 inches high.
The printer weighs
40 lbs.
The printer covers include several plastic covers1 the top cover,
body cover, rear cover and base cover.
The body cover has an opening in the
lower right corner for the control panel.
There are four major assemblies within the printer:
the printing
mechanism, paper handling mechanism, electronics and power supply.
1.3.1
PRINTING MECHANISM
The printing mechanism consists of the print head assembly, carriage
assembly and carriage drive components.
The carriage drive components are the
DC drive motor, drive belts, pulleys, encoder/timing disc and optical sensor.
These components drive the carriage and attached print head back and forth
along the platen.
1.3.2
PAPER HANDLING MECHANISM
The paper handling mechanism is capable of handling either fanfold
forms or cut sheet forms.
The mechanism consists of a stepper motor, pin feed
tractors, paper guides and drive rollers.
Fanfold forms are moved through the
printer using the pin feed tractors.
Cut sheets are moved through the printer
by the paper drive rollers.
The mechanism handles up to six parts using either
form.
1.3.3
ELECTRONICS
The printer electronics consists of two printed circuit boards {pcb)J
the Print Controller pcb and the Format Controller pcb.
The two boards are
located under the printer mechanism and attach to the bottom cover.
The Format Controller pcb contains the control panel assembly and the
parallel and serial input connectors.
1.3.4
POWER SUPPLY
The power supply is located in the left front of the printer and is
completely enclosed.
The power supply, an "off-line" switching type, is
used as the primary power source.
1-3
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