I would suspect that you would be better off finding/using a UV
cured Ink. My large HP Printer (24" wide) uses UV cured ink but
being a big and expensive printer, I have not yet had the courage to
try and run a PCB through it.
With that system, if I understand it correctly, the print head puts
the ink on the paper, and next to the print head is a UV light
source that cures it instantly.
Some day I would like get the guts up to run a PCB through it, but
that won't happen anytime soon I am afraid.
Just some thoughts.
Chris
--- In
Homebrew_PCBs@yahoogroups.com, David Cureton <yahoo@...>
wrote:
>
> Hi Myc Holmes,
> Based on your research chemist background, maybe we can
utilize your
> experience in that regard.
> I have been racking my brain tryng to think of chemicals that may
be
> suitable as an ink replacement for printing PCB etch resist.
>
> I am thinking that a two part ink similar to an epoxy would be
the
> best. My C88 printer has 120 black jets and 179 jets for the
colours.
>
> Therefore if we can work out a two part ink then the black jets
could
> lay down PART A with the remaining colour jets laying down the
PART B to
> set
> it.
>
> Naturally these substances would need to have a similar
> physical/chemical properties as the inks which the printer is
supposed
> to use and most likely need to have a fairly neutral pH.
>
> Any ideas?
>
> Cheers,
> David
>
>
> Myc Holmes wrote:
>
> >Hi Voltan,
> >
> >First of all, I congratulate you on a great idea and the work
cleverness
> >that have made it work for you.. I agree, a 99% reliability rate
is not
> >needed, just somewhat equal to Toner Transfer.
> >
> >As part of my research chemist background, I find it is important
to
> >identify and document all the details for repeatable results.
The key is in
> >the details.
> >
> >I've been following your work and am trying to repeat it. It is
frustrating
> >when it fails and appears that the process has been duplicated.
Until just
> >recently, the use of Brake Fluid to reduce surface tension and
now the fact
> >3 sets of nozzles / cartridges are being used to correct coverage
problems
> >has been published. It is very normal that some details the you
just take
> >for granted are especially important and need to be mentioned.
> >
> >These are the missed details that slow down the progress by
others. After
> >all, it has been 4 months since your original post and no one yet
has
> >successfully duplicated your results.
> >
> >It could be similar to Toner Transfer, where apparently minor
variations
> >have a major impact.
> >
> >Again, I apologize if it appears that I am disparaging you
efforts, but I am
> >trying to get a grasp on all the details to be able to repeat
them.
> >
> >Myc
> >
> >On 7/24/06, Volkan Sahin <vsahin@...> wrote:
> >
> >
> >> I didn't understand you reliability question, if possible
please
> >>explain a little bit more, what are your reliability criteria?
Do you mean
> >>successful repeatability or reliable as TT :)? Please don't ask
me to have
> >>99% success rate.
> >>
> >>I could be able print on pcb without any failure, it may be
because of the
> >>printer that I am using. The main thing is, board needs to be
clean, free of
> >>finger print, dust, and grease like required in TT process and
you need to
> >>use as many colors as possible to decrease the effects of
clogged nozzle. I
> >>am always using 3 colors. I didn't do 100 pcbs with this
technique but I can
> >>say that, at least for me, success rate is much higher than TT.
If someone
> >>plans to do double layer PCB with CNC drill or applying solder
resist then
> >>there is no chance to do it with TT, either he needs to use
photo-resist
> >>/dry-film or direct inkjet.
> >>The curing process is the key for direct printing, you need to
cure it
> >>until seeing some smoke on pcb, ink color becomes much darker
and copper
> >>will be oxidized. I think after a few trials you will understand
what I
> >>mean.
> >>Good luck,
> >>Volkan
> >>
> >>....successfully and reliably repeated. We have only heard from
Voltan
> >>that it is do-able, but nothing about the
> >>
> >>reliability. From Stefan's posts, his trials show a
repeatability problem.
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >[Non-text portions of this message have been removed]
> >
> >
> >
> >Be sure to visit the group home and check for new Links, Files,
and Photos:
> >http://groups.yahoo.com/group/Homebrew_PCBs
> >
> >If Files or Photos are running short of space, post them here:
> >http://groups.yahoo.com/group/Homebrew_PCBs_Archives/
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > ∗∗ ACCEPT: CRM114 PASS Markovian Matcher ∗∗
> >CLASSIFY succeeds; success probability: 1.0000 pR: 43.8618
> >Best match to file #0 (nonspam.css) prob: 1.0000 pR: 43.8618
> >Total features in input file: 6086
> >#0 (nonspam.css): features: 1603168, hits: 161233, prob:
1.00e+00, pR: 43.86
> >#1 (spam.css): features: 797120, hits: 122054, prob: 1.37e-44,
pR: -43.86
> >
> >-=-Extra Stuff-=-
> >
> > From sentto-4505361-15314-1153763115-yahoo=dcureton.com@... Tue
Jul 25 03:45:23 2006
> >Return-path: <sentto-4505361-15314-1153763115-
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> >Message-ID: <bd2a1fcc0607241044j5848744ci65256c80440472e2@...>
> >To: Homebrew_PCBs@yahoogroups.com
> >In-Reply-To: <20060724171238.85729.qmail@...>
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> >X-eGroups-Msg-Info: 1:0:0:0
> > From: "Myc Holmes" <mycroft2152y@...>
> >X-Yahoo-Profile: mycroft2152
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> >MIME-Version: 1.0
> >Mailing-List: list Homebrew_PCBs@yahoogroups.com; contact
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> >Precedence: bulk
> >List-Unsubscribe: <mailto:Homebrew_PCBs-
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> >Date: Mon, 24 Jul 2006 13:44:19 -0400
> >Subject: Re: [Homebrew_PCBs] Re: Epson R220 PCB printing Report #1
> >Reply-To: Homebrew_PCBs@yahoogroups.com
> >Content-Type: text/plain; charset=US-ASCII
> >Content-Transfer-Encoding: 7bit
> >
> >Hi Voltan,
> >
> >First of all, I congratulate you on a great idea and the work
cleverness
> >that have made it work for you.. I agree, a 99% reliability rate
is not
> >needed, just somewhat equal to Toner Transfer.
> >
> >As part of my research chemist background, I find it is important
to
> >identify and document all the details for repeatable results.
The key is in
> >the details.
> >
> >I've been following your work and am trying to repeat it. It is
frustrating
> >when it fails and appears that the process has been duplicated.
Until just
> >recently, the use of Brake Fluid to reduce surface tension and
now the fact
> >3 sets of nozzles / cartridges are being used to correct coverage
problems
> >has been published. It is very normal that some details the you
just take
> >for granted are especially important and need to be mentioned.
> >
> >These are the missed details that slow down the progress by
others. After
> >all, it has been 4 months since your original post and no one yet
has
> >successfully duplicated your results.
> >
> >It could be similar to Toner Transfer, where apparently minor
variations
> >have a major impact.
> >
> >Again, I apologize if it appears that I am disparaging you
efforts, but I am
> >trying to get a grasp on all the detai
> >
> >
> > -0-0-0-
> >
> >
>