Digital BW, The Print

I have found, assuming I was seeing the same problem with my work, 
as you are seeing with your work, the importance of printing at 360 
DPI v. 300 DPI. Notice that all Epson printer resolutions going with 
the travel of the print head, AND with the travel of the paper feed 
are multiples of 180. My 1280 is 180,360,720,1440,2880 in the 
direction of the print head, and I believe 720 in the direction of 
the paper feed. I think (have heard and now confirmed by my own 
tests) that printing at ANY resolution other than one that is evenly 
divisble by 180, causes a problem with the dither pattern AND/OR the 
ability of the driver to MICROWEAVE, especially in the direction of 
the paper feed.  I was getting faint hints of lines, patterns sort 
of, parallel to the direction of the print head travel, 
perpendicular to the direction of the paper feed.  I changed the 
resolution in PS to 360 (a multiple of 180), and the print is smooth 
as silk.  Give it a try, it might solve your problem.  Hope it does.

All the best,
kevin logan



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "copal01" 
<copal01@y...> wrote:
> The test was printed with turning off bi-directional printing and 
> 1440 dpi
> manuel
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Steven 
> Karafyllakis" <steve@s...> wrote:
> > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "copal01" 
> > <copal01@y...> wrote:
> > > I think that they parallel to the head movemnt.See this link 
to 
> > see a 
> > > gray scale print with black only. 
> > http://www.pbase.com/mcc01/head_dots
> > 
> > The test you have posted shows only wether or not the bi-
> > directionalprinting is working properly; if you can't get 
perfect 
> > alignment between the top and bottm sections of each line, TURN 
OFF 
> > BI-DIRECTIONAL PRINTING! Mis-alignment of this type can cuase 
all 
> > sorts of weird problems from simple loss of sharpness 
> > to 'herringbone'patterns. Unless you can get it absolutely 
perfect 
> > (and confirm that by checking with a lupe for double dots where 
> > there should be only one)its better to just give up the speed 
and 
> > turn it off. If you are printing with it off, then forget that 
> > particular alignment test, it is irrelevant. 
> > 
> > Steve Karafyllakis
> > 
> > > 
> > >