Seiko Instruments DPU-30 - Manual (Page 13)

2-1
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.
Printer
DPU-30
Host device
Input buffer
Line buffer
Figure 2-1 System Configuration