Digital BW, The Print

Imaging theory says to send data to the printer driver in 1/2 or 1/3 
increments of upper resolution dpi.

Ergo, the magic numbers for a 1270/870  are 360, 480, and 720 dpi... (at 
1440 dpi print resolution) or for a 1280 at 1440 dpi print resolution

Theoretically: for a 1280 (at 2880 dpi print resolution) they are:  360, 
480, 720, 960, and 1440 dpi..

However, everyone I have spoken with has seen no visible increase in 
quality (even under magnification of 2880 dpi prints) by going beyond 
720 dpi..

when you start getting up that high, the 4 picoliter size of the 
droplets is the real limiting factor.. with 2 picoliter drops, the 
increased resolution in the original file MIGHT be of value.. but with 4 
pico drops 460, 480, or 720 (the last, only if you have ram to spare 
when working images and you are printing on low dot gain papers) would 
be my recommendations.

The printer driver will resize images anyway. The reason for sending 
images in 1/2 and 1/3 multiples is to avoid problems with artifact 
creation when the driver resizes..


[Keith]
 
 




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