Print Quality - Epson SQ-2550 User Manual

paper-out sensor
A small switch behind the platen that sends a signal when it is
not in contact with paper, causing the
parallel interface
See interface.
parity
Parity is a method for a computer and printer to check the
reliability of data transmission.
pitch
Indicates the number of characters per inch (cpi). The standard
is 10 pitch.
platen
The black roller that provides a backing for the printing.

print quality

Your printer has two types of print quality: draft and Letter
Quality. Draft is for high-speed, draft quality jobs; Letter
Quality is for final, polished documents.
proportional spacing
Printing in which the width if the character varies from
character to character. For example, a capital W receives much
more space than a lower case i. The result looks more like a
typeset book than a typewritten draft.
pull tractor
An optional, detachable device that moves continuous paper
through the printer.
light to go on.
PAPER OUT
Glossary
GL-7