Digital BW, The Print

Mark,

The dots at 55% are probably the cyan ink starting.

No inkjet output that I've seen is dotless under magnification.
Paul
http://www.PaulRoark.com

_____________________________________________
  -----Original Message-----
  From: markaronica [mailto:aronica@...]
  Sent: Tuesday, November 12, 2002 2:43 PM
  To: DigitalBlackandWhiteThePrint@yahoogroups.com
  Subject: [Digital BW] Are these dots normal??? (using piezography)


  Below is a recent message that I posted to the Piezography support
  group.  Interestingly, I wasn't able to get any confirmation
  about whether my results using their system are normal.  Furthermore,
  Cone's tech support appears to be ignoring me since I sent them
  this same question over a week ago and still no response.  Any help
  would be very very very much appreciated as these dots are driving me
  crazy!

  ---------------------------------------------------------------------
  I'm new to the Piezo system so I'm having a hard time telling if the
  results I'm getting are normal or if I have a defective printer or am
  doing something wrong.

  Please check the following two output scans of Paul Roark's improved
  21-step wedge file to see an example of the dots I'm getting in the
  dark gray areas (thanks for posting this file Paul!).  My highlights
  are fine, but dots are very visible once the black ink kicks in when
  printing shadows (at least I think it is the black ink and not the
  dark gray ink).

  This is a zoomed-out image that shows where the second image was
  taken from on the wedge (white box):
  http://www.aronica.com/patch/WedgeFull.jpg

  Here is the zoomed in version showing what is in the white box
  indicated above @ 1200dpi on a canon flatbed scanner:
  http://www.aronica.com/patch/WedgeCloseup.jpg

  My environment is as follows:
  Epson 1200
  PT-WN inks
  Windows 2000 OS
  EAM Paper
  Using PiezographyBW 6.0.4

  I also just cleaned the heads using the windex trick and was able to
  get rid of much of the microbanding. Also, I think I'm getting
  perfect nozzle checks and alignments (done using EAM paper for both),
  although this is hard to confirm since I've never seen an example
  on the web that shows what a perfect one looks like.

  As you can see in the scans, there is a very visible black (or dark
  gray?) dot patterns showing up which appear to suddenly stop (or
  start depending on which way you look at it) at the 55% or 114 gray
  step. These dots are visible to the naked eye (I'm 34 years old so
  eyesight is still somewhat okay).

  So my question is, is this what other piezo users see when they print
  out the wedge? If not, is there a way to fix this? When I used to use
  the Lyson hex b&w inks and the epson driver I never saw any dots
  using the same printer. On the piezography website, it is claimed
  that PiezographyBW is 'dotless'. Why am I seeing dots?  Could my
  printer be broken?

  Here are a few more pictures that show the dots in a real world
  example:

  Full size image with white box indicating zoomed in area:
  http://www.aronica.com/patch/seaweed.jpg

  Zoomed in area:
  http://www.aronica.com/patch/seaweedcloseup.jpg

  Thanks for your help with this frustrating problem in advance!
  -Mark



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