Epson LQ-450
The Epson LQ-450 dot matrix printer was introduced in 1991 to replace the LQ-550. The main changes over the LQ-550 were an increase in the number of standard fonts and code page support. Two sets of DIP (Dual In-line Package) switches are located in a compartment above the main control panel. The switches control certain printer functions and default settings, the details of which are listed below.
Switch No. | Function | On | Off |
SW1-1 | Character Set | See Character Tables |
SW1-2 | Character Set | See Character Tables |
SW1-3 | Character Set | See Character Tables |
SW1-4 | Page Length | See Page Length Table |
SW1-5 | Page Length | See Page Length Table |
SW1-6 | Typeface | Condensed | Normal |
SW1-7 | Code Table | Graphic | Italic |
SW1-8 | Cut Sheet Feeder | Valid | Invalid |
SW2-1 | Not Used | | |
SW2-2 | Tear-off Mode | Valid | Invalid |
SW2-3 | 1" Skip-over perforation | Valid | Invalid |
SW2-4 | Auto-line feed | Auto LF | No LF |
SW2-5 | Select Buffer Capacity | 8KB | 1KB |
SW2-6 | Graphics Print Direction | Bi-directional | Uni-directional |
SW2-7 | Default Character Pitch | See Character Pitch Table |
SW2-8 | Default Character Pitch | See Character Pitch Table |
Character Table
The following table shows the international character sets that can be selected with these DIP switches when DIP switch SW1-7 is off.
Character Set | SW1-1 | SW1-2 | SW1-3 |
USA | ON | ON | ON |
France | ON | ON | OFF |
Germany | ON | OFF | ON |
UK | ON | OFF | OFF |
Denmark | OFF | ON | ON |
Sweden | OFF | ON | OFF |
Italy | OFF | OFF | ON |
Spain | OFF | OFF | OFF |
The following table shows the graphics character sets that can be selected with these DIP switches when DIP switch SW1-7 is on.
Character Set | SW1-1 | SW1-2 | SW1-3 |
USA (PC437) | ON | ON | ON |
Multi (PC850) | ON | ON | OFF |
Portugal | ON | OFF | ON |
Can-Fra (PC863) | ON | OFF | OFF |
Norway (PC865) | OFF | ON | ON |
Page Length Table
Page Length | SW1-4 | SW1-5 |
11" | OFF | OFF |
12" | ON | OFF |
8.5" | OFF | ON |
11.7" | ON | ON |
Character Pitch Table
Character Pitch | SW2-7 | SW2-8 |
10cpi | OFF | OFF |
12cpi | ON | OFF |
15cpi | OFF | ON |
Proportional | ON | ON |
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