#Gray Shading at 600 DPI
12-May-95 22:33:54
Sb: #271167-#Gray Shading at 600 DPI
Fm: Dick Minnick [Ford] 74417,51
To: allan phillips 75730,246
Allan,
How are you generating the grey scale patterns?
In PCL mode, the printer is only capable of generating 8 different grey
patterns to fill arbitrary rectangles. With the newer 600 dpi printers, these
patterns are the same as those originally generated with the first LaserJets
for backwards compatibility. These are, indeed, quite coarse.
Unlike PostScript, the printer cannot and does not generate grey fills of
arbitrary percentage within an arbitrary area. The bit-mapped fill patterns
must be generated by the printer driver, the application, or by the programmer
writing PCL code directly. It will put the dots exactly as it is told!
– Dick Minnick [Ford],74417,51 @ 12-May-1995, 23:24:23 EST [Troy, MI]