Epson Action Laser II - Manual (Page 285)

symbol set
A collection of symbols (letters, numbers, and special characters)
used by a font. Symbols are assigned to specific codes in a character
table.
test print
A method of checking the operation of the printer. When a test print
is performed with the SelecType feature, the printer prints out one of
the two test patterns (vertical or horizontal lines).
toner
A dry, powder-like substance composed of resin and pigment. Toner
is used to form the image during the printing process.
transfer charger wire
A metal wire used to impart a static charge to the paper, causing
toner particles on the photoconductor unit to transfer to the surface
of the paper.
typeface
A set of characters all of a single design in which the characters share
common features such as body shape. The typeface is given a name
such as Courier.
GL-8 Glossary