CHAPTER 2

TERMS USED IN THIS MANUAL

This chapter describes the terms used in this manual.

Dot

A character or graphic image is composed of picture elements called dots.

 

A dot corresponds to one of the thermal head heat elements.

Dot line

A line of dots arranged perpendicular to the paper feed direction. A dot

 

line corresponds to a line of thermal head heat elements.

 

One dot line consists of 384 dots in DPU-30.

Character spacing

The space separating contiguous characters on one character line.

Line spacing

The space separating character lines.

Input buffer

The memory for temporarily storing the data (characters and commands)

 

received from the host device. Data is executed when fetched from the

 

input buffer. The capacity of the input buffer is 4,096 bytes.

Line buffer

The memory for storing one line of character data fetched from the input

 

buffer. When the line buffer is filled with character data (i.e. printing of an

 

entire line) or the printing conditions are made valid through a command,

 

the data in the input buffer is printed.

 

The system configuration is shown in Figure 2-1.

DPU-30

Input buffer

Host device

 

Line buffer

 

 

Printer

 

 

 

 

 

 

 

 

 

 

 

Figure 2-1 System Configuration

2-1