Printronix SL4M Guida Utente

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14
Chapter
1
Thermal Printer Technology
NIC, Wireless: Provides wireless 802.11b/g connectivity without 
expensive cabling and reconfigurations required from a wired network. 
PNE is standard with this option.
Real Time Clock: A clock chip with internal battery that keeps track of the 
year, month, day, hour, minute, and second values. It continues to 
operate when the printer is off.
RFID Encoder: The RFID (Radio Frequency Identification) encoder 
programs smart labels (tags with embedded inlays).
Standard Peel with Liner Rewinder: In label peel-off mode, peels off 
labels one at a time before printing the next label and rewinds the liner 
into a discardable roll. 
Standard Peel without Liner Rewinder: The Peel-Off mode peels labels 
while discarding the dispensed liner in front of the printer.
For more information about printer options, see Appendix B on page 223.
Thermal Printer Technology
Quiet and fast, with excellent print quality, your multifunction thermal printer 
uses an inline thermal printhead. The thermal printer operates differently from 
a line matrix or laser printer, because the thermal printer uses a printhead with 
heating elements and special paper or ribbon.
The Printing Process
The thermal printhead allows two modes of operation:
Direct Thermal
During
 direct thermal printing, the thermal printhead selectively heats 
small, rectangular
 thermal dots. When these contact the coated thermal 
paper, the dyes and developers in the coating react to the heat and 
develop an image. This mode of printing is generally used for short-term 
labeling applications.
Thermal Transfer
During thermal 
transfer printing, the heated thermal dots contact a 
thermal ribbon. The heat reacts with the ribbon and bonds the image to 
the paper. This method is used especially for abrasive, long-storage 
applications and for specialized applications, such as in extreme 
environmental conditions or where tamper-proofing is required.