Printer User Manual
Table Of Contents
- FRONT MATTER
- TABLE OF CONTENTS
- INTRODUCTION
- CHAP 1-SETTING UP THE PRINTER
- CHAP 2-PAPER HANDLING
- CHAP 3-USING THE PRINTER
- CHAP 4-USING SOFTWARE AND GRAPHICS
- Using the LQ-2550 With Application Programs
- Computer-Printer Communication
- Enhancing Your Printing
- Graphics
- User-Defined Characters
- Designing Your Characters
- Design Grids
- Data Numbers
- Sending Information to Your Printer
- Printing User-Defined Characters
- Copying ROM Characters to RAM
- Letter Quality Characters
- Proportional Mode Characters
- Superscripts and Subscripts
- The Graphics Command
- Column Reservation Numbers
- A simple Graphics Program
- Using Hand-Calculated Data to Print Graphics
- Using Software and Graphics
- Mixing Print Styles
- CHAP 5-MAINTENANCE AND TRANSPORTATION
- CHAP 6-TROUBLESHOOTING
- Troubleshooting
- Problems and Solutions
- The Printer Does Not Print
- The Printer Stops Printing
- The Printout is Spaced Incorrectly
- The Printout is Faint or Uneven
- The Printout is Not what You Expect
- Single Sheets Do Not Feed Properly
- Continuous Paper Does Not Feed Properly
- Cut Sheet Feeder Does Not Load Paper Correctly
- The Short Tear-Off Feature Does Not Work Properly
- Color Printing Is Not What You Expect
- Data Dump Mode
- CHAP 7-USING PRINTER OPTIONS
- CHAP 8-COMMAND SUMMARY
- APPENDIX A-TECHNICAL SPECIFICATIONS
- GLOSSARY
- INDEX

MSB control
MSB is the Most Significant Bit. MSB control (ESC =, ESC > , and
ESC #) does not work for graphics.
ESC = (equal)
Format:
ASCII code:
ESC =
Decimal:
27 61
Hexadecimal: 1B 3D
Set MSB to 0
Comments:
Sets the MSB of all incoming data to 0. Some computers always send
data with the MSB set to
1,
which means that italics or character
graphics will always be printed. ESC = can overcome this problem.
ESC >
Set MSB to 1
Format:
ASCII code:
ESC >
Decimal:
27 62
Hexadecimal: 1B 3E
Comments:
Sets the MSB bit of all incoming data as
1.
ESC #
Cancel MSB Control
Format :
ASCII code:
ESC #
Decimal :
27 35
Hexadecimal: 1B 23
Comments:
Cancels the MSB control set by ESC = or ESC > .
Command Summary
8-11