Printronix Auto ID T800 Series Administrator's Manual page 273

Label Liner (backing)
Label Taken Sensor
Media
Media Sensor
Memory
Nonvolatile Memory
NVRAM
Parity (check)
PCBA
The material labels are attached to during their
manufacturing process. Attachment is usually
accomplished with an adhesive. After printing, labels can
be easily removed from the liner and the liner discarded
or recycled.
A sensor located at the front of the printer to detect the
presence of a label extended out the front of the printer.
The sensor is used only during Peel-Off Media Handling
to sense a label and then detect its removal prior to
printing the next label.
Material onto which data is printed by the printer. The
types of media supported by the printer are die-cut
labels or tag stock, supplied in roll or fanfold format.
Media is further described by the type of sensing used
to detect the Top-of-Form position based on the label
length indicators used. Transmissive (Gap) media uses
a liner gap, notch, or hole between labels, and
Reflective (Mark) media uses a horizontal black mark
located on the underside of the tag stock or label liner.
Continuous media (with no label length indicators) uses
no sensing method, and the operator determines which
label length is desired.
The sensor used to detect the presence of media in the
paper path as well as the gap, notch, or hole position of
Transmissive media or the horizontal black mark on
Reflective media.
See RAM, Nonvolatile Memory, DRAM, and Flash
Memory.
Nonvolatile memory stores variables that must be
preserved when the printer is turned off, such as
configuration parameters and printer usage statistics.
Acronym of Nonvolatile Random-Access Memory. See
Nonvolatile Memory.
Parity checking is the addition of a non-data bit to data,
resulting in the number of "1 bits" being either always
even or always odd. Parity is used to detect transmission
errors. Parity represents value in the check digit of the
received or transmitted data.
Printed Circuit Board Assembly. A PCB with
components (ICs, resistors, capacitors, etc.)
installed.
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