nunn@icst-ecf.UUCP.UUCP (01/29/87)
> Currently, some documents will print properly but with poor quality > letters (what appear to be vertical white lines (holes) through > characters). Documents which use a number of fonts scramble the fonts > (e.g., in one font every f,C,u,y,8, etc etc is replaced by "("; in > another, every W,3,a,l, etc etc is replaced by "fi"). We had a similar problem with a QMS-1200 using the Centronics/Dataproducts and LP11 interface. After many months of complaints to QMS, they finally admitted that the daughter board requires special mods to handle all 8-bit data. -John <nunn@icst-ecf.arpa> ------
grim@HUEY.UDEL.EDU.UUCP (02/12/87)
Stephen, We had exactly the same problem many years ago. I'm not sure I can recall exactly what was wrong but there are several things to check. The symptoms seem to match. I suspect that you are losing the eighth bit of each character. Thats where the holes in the characters come from when the downloaded fonts are used. (The font downloads use all eight bits for the character bit maps.) The other problem is probably due to incomplete loading of fonts. The QMS printer will substitute the first character loaded in a font for any character that is missing in a font. If the font download fails, possibly also because of eight-bit problems, you will see similar symptoms. Check the configuration of the RS232 module and make sure it is set for eight-bit/no parity not seven bit. If your printer is somewhat old there was an early ROM change that enabled the eight-bit data path. You might have to check with QMS about that. Hope this helps! Dan