B–2
Line Matrix Printing
Character Formation
The P9212 is an impact printer: It creates characters by printing ink dots on
paper. Dots overlap to produce a solid-appearing character of uniform
density. The dots are made by an assembly of steel hammers mounted on a
rapidly oscillating shuttle. The hammers strike the paper through a moving
ink ribbon. The dot patterns of characters are mapped in printer memory on
invisible matrixes, as shown in Figure B–1.
Dot Column
Dot Row
Character Row
Character Column
Matrix visible only
to the printer
Ink dots formed
by hammer tips.
Figure B–1. Typical Character Formation
Summary of Contents for P9212
Page 1: ...P9212 Line Matrix Printer Setup Guide R...
Page 2: ......
Page 3: ...P9212 Line Matrix Printer Setup Guide R P N 134621 001 Rev C...
Page 42: ...2 24 Setting Up the Printer...
Page 124: ...4 14 Printer Interfaces...
Page 144: ...5 20 Routine Service and Diagnostics...
Page 174: ...A 8 Printer Specifications...
Page 180: ...C 2 ASCII Character Set...
Page 186: ...D 6 Predefined Configuration Values...
Page 204: ...Index 8...
Page 205: ......