Microsoft KB Archive/85984

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Epson LQ-950 Prints Jagged Characters or Vertical Lines

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Q85984

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The information in this article applies to:


 * Microsoft Windows versions 3.1, 3.11

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SYMPTOMS
When you print from Microsoft Windows 3.1 to an Epson LQ-950, jagged vertical lines or characters may result.

CAUSE
This problem may be caused by the bidirectional printing option within the Epson LQ-950 printer.

RESOLUTION
On the motherboard of the Epson LQ-950 printer, there are two banks of switches. To correct this problem, on bank 1, turn switch 5 to &quot;On&quot; to set the printer to unidirectional mode instead of bidirectional mode.

MORE INFORMATION
The jagged lines and character problem usually occurs with specific characters or vertical lines within the document, not randomly. The problem is in the way the LQ-950 interfaces with different drivers used to emulate it, such as the Epson LQ-2500 or LQ-2550. It will print these graphics in a bidirectional pattern, that is, it is approaching the area from a different direction every other time. This creates the appearance of a jagged edge because graphical characters are printed out of alignment.

Additional query words: 3rdparty 3.10 Setup Mode Directional 3.11

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Issue type :

Technology : kbWin3xSearch kbWin310 kbWin311