Re: [Homebrew_PCBs] INkejet printing right on a circuit board.... Links
2005-05-07 by John Kent
Here are a few links concerning the subject of direct printing on copper .... -------------------------------------------------------------------------------- http://www.smh.com.au/articles/2003...l?oneclick=true Article on conductive inks and their applications. http://homepage.tinet.ie/~ei9gq/pcb.html How to make PCB's using toner transfer, using UK available paper. http://americanprinter.com/mag/prin...introducing_uv/ Article on UV inks. http://www.capv.com/home/CAPStats/C...03/3.30.04.html Article on UV cure Inks giving 0.2 second cure time and advantages over solvent inks. http://www.signindustry.com/outdoor...5-JL_UVpt2.php3 Article on UV cured inks. http://members.whattheythink.com/al...le.cfm?id=17518 Article on commercial UV cured inks. http://www.oce.com/en/News/Newsbull...izonaT220UV.htm Commercial article on UV cured ink. http://www.oce.com/en/News/Newsbull...izonaT220UV.htm UV inks and machine development http://www.screenweb.com/inks/cont/UVCuring.html Mysteries and myths of UV cured inks. http://my.ecplaza.net/cnkcho/2.asp Small commercial thick material flatbed printer showing table height mechanism. http://www.circuitree.com/CDA/Artic...,121582,00.html Article on the application of Jetink printing of PCB's and limitations. http://www.xaar.co.uk/ One of the leaders in this field. Printheads, Ink etc. A company to watch. ----- Original Message -----
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From: "Stefan Trethan" <stefan_trethan@...> To: <Homebrew_PCBs@yahoogroups.com> Sent: Saturday, May 07, 2005 8:20 PM Subject: Re: [Homebrew_PCBs] INkejet printing right on a circuit board.... > Please do keep us informed if you find a suitable UV curing ink. > I agree it seems the most promising. > > I would not mind putting the "wet" pcb under UV lamps for curing. > > ST > > > > On Sat, 7 May 2005 20:14:39 +0100, John Kent <moonshadow@...> > wrote: > >> Thank you for the reply, I found it very interesting. As you say part of >> the answer is in cleaning or preparing the copper surface but most of my >> problems lay with the ink. I got in contact with many ink manufacturers >> and >> we had some rewarding discussions about this application. It basically >> boils down to the choice between a solvent based ink or an UV cured ink. >> The >> water solvent based inks I have tried so far, simply wash off in the acid >> bath. There can also be a problem with the solvent vaopurising and >> cloggung >> the head. I came to the conclusion that a UV cured ink may be a possible >> all >> round solution. These are actually resin based and offer a much more >> durable >> printed image. UV inks are available that will cure in a fraction of a >> second. So it might be possible to mount a fibre bundle from a UV light >> source to just behind the print nozzles as a low mass light cure source. >> Taking the idea one step further, it would also be possible >> to >> print, graphics, flux as well as acid resist direct onto the board. This >> leads us onto conductive inks, which already exist. They normally >> require >> special for purpose heads, but seem to work well for most low power >> applications. I think for my own purposes a simple A5 flat bed printer, >> using UV cured ink would do the trick. Another advantage of UV ink is >> that >> it does not dry in the nozzles as solvent ink does. I have seen >> applications >> where multilayer boards have been produced using UV inks, with an >> insulating >> ink between layers ... and all of this printed on a flexible substrata. >> Anyway who says we have to have a purpose substrata since we can print >> onto >> anything! >> It is possible to convert the older models of Cannon >> printers >> into flat bed, I have one on the bench at the moment. Thanks again for >> the >> reply. . >> John. >> ----- Original Message ----- > > > > > > Be sure to visit the group home and check for new Bookmarks and files: > http://groups.yahoo.com/group/Homebrew_PCBs > Yahoo! Groups Links > > > > > > >