E Glossary

Port

A data channel used for receiving data from or

 

transmitting data to one or more external devices.

Protocol

The rules and conventions that govern

 

communication between a printer and a host

 

computer. A protocol includes codes for printing text

 

and graphics and codes instructing the printer to

 

perform special operations.

RAM

Random-Access Memory. Also called "main

 

memory" or "working memory". It is the active

 

memory of the printer, into which programs are

 

loaded. RAM is saved to volatile memory because

 

data in RAM is lost when power is turned off or

 

interrupted.

Resolution

A measure expressing the number of component

 

units in a given range used to create an image; in

 

printing, expressed as the number of dots per inch

 

(dpi) horizontally and vertically.

Roll Media

Media supplied in a roll format, usually wound on a 1

 

inch or 3 inch cardboard core. The T4204 media

 

support assembly accepts both core sizes.

Slew

Rapid vertical paper movement.

Stop Bits

The signal which indicates the end of a character or

 

element.

Thermal Transfer Media

Media specifically designed to work with a ribbon for

 

image transfer. In Thermal Transfer mode,

 

compatibility between the ribbon and the media is

 

critical in producing a high quality long lasting image.

Thermal Transfer Printing

A printing method in which the printhead presses a

 

specially coated ribbon against the media. The

 

printhead elements react with the ribbon and bond

 

the image to the media.

Twinax

Twinaxial. A type of cable with two wires surrounded

 

by insulation and a braided shield.

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Printronix T4204 manual Thermal Transfer Printing