Homebrew PCBs

Making PCB for the FTDI Vinculum 2 Chip    youtu.be/qK6DKbzm024



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>From: garydeal <garydeal@...>
>To: Homebrew_PCBs@yahoogroups.com
>Sent: Monday, October 10, 2011 7:52 PM
>Subject: [Homebrew_PCBs] Re: Solid black artwork
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>I've used a cheap Epson printer with the drivers that came with the 
>printer. The black from the inkjet was much denser (opaque) than anything 
>I've been able to get out of several laser printers, including a $12k 
>Sharp.
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>I used plain cheap copier paper, although the slightly heavier 
>"laser printer" paper worked about as well and could hold finer detail. I 
>used whatever settings were available for maximum black - and black only, 
>no multicolor imitations of black, get the print as dense as possible. 
>The parent image should be black/white only, no color, no grayscale, etc.
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>The thing that seemed to make a big difference for me was rubbing a 
>little vegetable oil on both sides of the paper, giving it a few minutes 
>to soak in, then blotting it dry-ish. The paper would then transmit more 
>light, while the black areas seemed to transmit less light. I've then 
>used the oiled paper mask as the photo master for the resist (print side 
>to the resist), as well as using it to make a litho film master - it was 
>a handy way to whip up a one-off master before the inkjet died.
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>Something to try, anyway. Now I have to do a bunch of darkroom work 
>to get a decent master from a laser print.
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>I'm not sure how much UV various vegetable oils might absorb, but 
>never use gelatin.
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>Good luck with the project,
>-Gary
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>>My goal is to make accurate artwork for working with photoresist PCBs.
>>What suggestions do you have to make as high contrast (solid black) art work
>>as possible?  It could be inkjet (preferably) or Laser Jet.
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>>What software driver to use to get better ink control and resolution than
>>the standard printer drivers?
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>>I tried a Canon i9100 with both JetStar and Pictorico Premium OHP
>>transparency film.
>>The paper selection setting was the recommended Photo Paper Pro, highest
>>quality printing and max ink density.
>>The Pictorico worked best but I like to be able to get a more solid black.
>>
>>Epson vs.  Canon: any significant advantage of either one?
>>TIA for any suggestions.
>>Bertho
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