eckert@medusa.informatik.uni-erlangen.de (Toerless Eckert) (12/05/90)
Hello We have some HP Ruggedwriter 480, that we want to use to print raster graphics. Now the problem is, that the printer prints much to slow. It uses 3 passes over the paper to print a single line of 24 pixels vertically. The printer has needles, but it uses only 8 per pass. We assume that this has either to do with power consumption of the printing head or the noise level. When we print raster graphics that have very few black pixels, the printer often prints all 24 rows in a single pass and therefore is as fast as in text mode. Does anybody know the exact heuristic that this printer uses to differentiate between these two modes ? We could then create our graphics, so that the printer will use only one pass. We've already tried to leave every other pixel white, but this ain't enough. There is also no software command to change this behaviour, according to the manual (there is no reference to this behaviour at all in the manual). Please reply by email. -- Toerless Eckert | /C=de/A=dbp/P=uni-erlangen/OU=informatik/S=eckert 50GB/M limit: NO MERCY | X.400 ^ Internet> eckert@informatik.uni-erlangen.de