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???
02/19/10 16:47
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 		 #173293 - plotters for PCBs
Responding to: ???'s previous message
Joseph Hebert said:
Hi Jez

Back in 1989 I and a friend tried printing directly to the Cu-clad board, and viscosity was indeed the biggest problem. 10 mil traces didn't stay 10 mils. And with broadening of the trace we also observed increasing translucense. We were using a pen-plotter though, so an ink-jet printer might be workable.


While we are all showing our ages, I remember that you could get little knives that fit into the HP7475A plotter carousel. These knives would cut out traces on rubylith.

-a


List of 29 messages in thread
TopicAuthorDate
Direct-to-PCB inkjet printing            01/01/70 00:00      
   well...            01/01/70 00:00      
      viscosity problem            01/01/70 00:00      
         plotters for PCBs            01/01/70 00:00      
            Age ?            01/01/70 00:00      
            There were inks specifically for that            01/01/70 00:00      
   do you also have ...            01/01/70 00:00      
      ?            01/01/70 00:00      
         re: ?            01/01/70 00:00      
   The printer's ink density may be a problem            01/01/70 00:00      
   Lot's of info here            01/01/70 00:00      
      SEVENTY TWO PAGES            01/01/70 00:00      
         straight path inkjet            01/01/70 00:00      
      Effort/Reward Ratio            01/01/70 00:00      
         That is also mentioned            01/01/70 00:00      
         CD Printers            01/01/70 00:00      
            Look at this            01/01/70 00:00      
         Etching ?            01/01/70 00:00      
         There are "gotchas" with that method            01/01/70 00:00      
            When was that?            01/01/70 00:00      
               manufacturing quality standards have been lowered            01/01/70 00:00      
                  A good laser is very repeatable            01/01/70 00:00      
            Not my experience            01/01/70 00:00      
               It's been done but it depends on your demands            01/01/70 00:00      
         wind the laser up a touch            01/01/70 00:00      
            I know a fellow ...            01/01/70 00:00      
               LPKF ProtoLaser-S            01/01/70 00:00      
            I was thinking positive, not negative            01/01/70 00:00      
               I'm sure I've heard of that            01/01/70 00:00      

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