Intermec 4400 User Manual page 304

4400 Bar Code Label Printer User's Manual
symbology
A scheme for encoding data as bar code. Code 39, Interleaved 2 of 5, and
Codabar are examples of different symbologies.
thermal transfer
A method of printing by which heat from the printhead melts ink from the
ribbon onto media. The ink adheres to the media as it cools.
top of form
The point at which printing can start on a label. Separated from the edge of the
label by the margin.
UPC
Universal Product Code. Bar code used widely in the United States.
user-defined characters (UDC)
See Graphic.
user-defined fonts (UDF)
See Soft Font.
variable data field
Bar code and text fields that change from one label to the next.
XON/XOFF
A protocol that stops the host from sending data when the printer buffer fills
up and starts it again when the buffer empties.
G-10