S-Class  85 
 
 
Glossary 
 
alphanumeric Consisting of alphabetic, numeric, punctuation and 
other symbols.  
 
backup speed The speed at which the ticket stock is moved 
backward under the printhead following tear-off or cutting to 
position the next ticket at the start of print position.  
 
barcode A representation of alphanumeric information in a pattern 
of machine-readable marks. The basic categories are divided 
into one-dimensional (UPC, Code 39, Postnet, etc.) and two-
dimensional barcodes (MaxiCode, PDF417, etc.).  
 
character set The entire complement of alphanumeric symbols 
contained in a given font. 
 
checksum  An alphanumeric error detection method used in many 
bar code symbologies for informational security.  
 
core diameter The inside diameter measurement of the cardboard 
core at the center of a ticket roll. 
 
cutter  A mechanical device (e.g., rotary or guillotine) used to cut 
tickets following printing. 
 
defaults  Preset database settings returned following a reset of the 
printer. 
 
diagnostics Resident (internal) programs used to locate and diagnose 
hardware problems in the printer.  
 
direct thermal A printing method that uses a heat sensitive (direct 
thermal) material and only the heat of the printhead to create 
the image on that material.  
 
direct thermal ticket stock Printing material coated with special 
chemicals that react by darkening with the application of heat.