Homebrew PCBs

If working properly they will register correctly as long as you have the
thing to print exactly centered in the page. Also there is a duplexer you
can find cheap for the LJ 4 and 4 Plus, sits under the printer and you
remove the back cover where a cover for the duplexer replaces the back. The
duplexer is L shaped. You can also set an optional 500 sheet tray under
that. The LJ 4 and 4 Plus also has an envelope feeder option. All can be
found cheap enough. To upgrade memory dig out that old 72 pim ram from those
old 486 era machines.

The fuser on the 4 and 4 Plus are different and non-interchangeable. The
rollers and many other parts are the same  including plastics. Both can use
an inexpensive MIO type print server/network card.

I do this for a living and signs are an additional business added in the
last year although I have lots of experience in it since the 70's including
silk screening. Also if anyone ever needs a fuser rebuilt reasonably or
their printer repaired (UPS shippable no bigger) I can repair most brands
and models, inkjet, thermal, impact laser/LED and dye sublimation - assuming
I can get parts, if needed.




  -----Original Message-----
  From: Homebrew_PCBs@yahoogroups.com
[mailto:Homebrew_PCBs@yahoogroups.com]On Behalf Of teknochaman
  Sent: Wednesday, March 28, 2007 11:30 AM
  To: Homebrew_PCBs@Yahoogroups.com
  Subject: [Homebrew_PCBs] Re: Laserjet 4 plus Problem !!!


  Hi Guja,

  Let me say that LJet stuff wasn't technically possible
  when it appeared (mid 90's)

  I used to register double sided for offset duplication
  and I couldn't get it.

  Trouble is the mechanism of the LJIV, as they weren't
  prepared to 'register' precisely on both sides.

  That could be work for the models being 'double-side
  enabled' then corporate office printers of the mid
  90's.

  You'll ned to do some manual guide positioning system
  for proper alignment.

  Hope that helps.

  Re: Laserjet 4 plus Problem !!!
  Posted by: "guja" guja2001bg@... guja2001bg
  Mon Mar 26, 2007 2:03 pm (PST)

  print them both at same time. ( two cdrs, side by
  side)

  Bruno St-Laurent <bsl88k@netscape. net> wrote: Hi guys
  , i'm trying to print a PCB of 2.5 x 10.25 inches dual
  layer ,
  the print are proper lenght but the middle of the
  print don't match(
  offset) !!!! it seem that the printing is not linear
  !!!

  any of you have an idea ???

  BSL





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