Homebrew PCBs

getting that Black Ink Stucco'd so to speak onto the OHP Film with out any misalignment is painfull sometimes, however printing it twice was probably enough but I would give it a 3rd layer.
is just one layer of Yellow ink enough to block the UV , perhaps a Photo Print head with a pigment ink would work better ? I just may get another Print Head for it .... that wee printer is still delivering the goods after 5 years and countless refils
Thomas

  ----- Original Message ----- 
  From: Ben H. Lanmon 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Wednesday, May 18, 2005 9:21 AM
  Subject: [Homebrew_PCBs] Re: Inkjet printing right on a circuit board....


  --- In Homebrew_PCBs@yahoogroups.com, "Thomas" <teecee@c...> wrote:
  > I used my little ol Cannon BJC85 with the transparencies and 
  obtained good results .... I put the transparencies through the 
  printer a couple of times to get a very dark layer of Black ink and 
  with perfect results at times 80% of the time but those bigger PCB's 
  at 150mm x 250mm that are double sided could become a pita ... and 
  then I read here about using Yellow Inks ..oh well !!!


  BJC85 that sounds like the model # of my little portable printer I 
  use in the truck with my laptop, Does OK on paper anyway never tried 
  it with Transparencies.  Yes give the Yellow ink a try, I think you 
  will find that it does a lot better than the Black ink, blocks UV 
  better.  I have held transparencies done in Black and could not see 
  thru it and did just OK.  But using Yellow yes you can see thru it 
  but it blocks UV.  Most likely running it thru multiple times does 
  not give you the sharpest image either.  I know with my HP 1700 
  sometime the second run thru would line up good and sometime it 
  would not just slightly off.  I think that you will like the results 
  of using the yellow ink.  

  Ben





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