Epson 4000 Manuel D’Utilisation

Three number systems are commonly used 

printers:

binary is base 2 and uses only the digits 0 and 1. All information

in computer systems is handled in binary form represented by

electrical signals that are on or off. A binary digit is often called a

bit; any decimal number between 0 and 255 can be expressed by

an eight-bit binary number.

decimal is base 10 and uses the digits 0, 1,2,3,4,5,6,7,8, and 9.

(This is the most familiar system.)

hexadecimal (hex) is base 16 and uses the digits 0, 1,2,3,4,5,6,7,

8,9, A, 

D, E, and F. This is frequently used by programmers.

Any decimal number between 0 and 255 can be expressed by a

two-digit hex number.

When the printer is on line, it is able to communicate with the

computer connected to it.
paper-out sensor

A small 

behind the platen that sends a signal when it is not in

contact 

paper, informing the printer and remote computer that

there is no paper loaded, and causing 

light to go on.

The part of the printer that fits above the platen to assure proper

paper tension in the printing area.

An interface that connects the computer and the printer. A parallel

interface transmits data 

character or code at a time. See also

The black roller that provides the backing for the paper during

printing.

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Glossary