Did a small workaround to solved it !!! i printed first layer then
rotate drawing 180- degree then print the second layer(mirror)!!!,
Why ?? it prints the 2 layers the same way so they gets the same
offset in the middle , aligning properly for transfer !!!
--- In
Homebrew_PCBs@yahoogroups.com, "Russ Blakeman" <rhb57@...>
wrote:
>
> 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@...
> 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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>
>
> [Non-text portions of this message have been removed]
>