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C=1 M=1 Y=1 K=1 over whole page
Posted by: mathiasbage ()
Date: October 11, 2007 06:07PM

Hi!

Does anyone know what happens to the LJ1600/LJ2600 if you ask it to print
C = 1, M = 1, Y = 1 AND K = 1 at the same time? Will the engine handle this?
foo2hp doesn't mind me doing so, so I placed '1 1 1 1 setcmykcolor' PostScript commands in my print file, and the zjsdecode shows that foo2hp indeed does
SOMETHING to all four planes.

I haven't bought a 1600/2600 printer yet, so I can't test it. And most stores won't let me try their printers, and HP's pre-sales haven't answered me at all.

I just want to create a thick layer of toner, regardless of its color.
And by having the engine print all four on top of each other will (?) do just that.

For what reason, you may wonder? To produce printed circuit boards!
Either with toner transfer (aka Gootee method, my preferred choice), or the "traditional" photographic method with UV light exposure and sodium hydroxide developer.


Regards,
Mathias Bage



Edited 1 time(s). Last edit at 10/11/2007 09:58PM by rickrich.

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Re: C=1 M=1 Y=1 K=1 over whole page
Posted by: rickrich ()
Date: October 11, 2007 08:55PM

foo2hp(1)                                                            foo2hp(1)

NAME
       foo2hp  -  Convert  Ghostscript  pbmraw  or  bitcmyk  format into a ZJS
       printer stream


[snip]

       -A     AllIsBlack: convert C=1,M=1,Y=1 to just K=1.  Works with bitcmyk
              input only.


But:
http://www.olimex.com/pcb/index.html is only $26 for 1 single board.



Edited 1 time(s). Last edit at 10/11/2007 11:42PM by rickrich.

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Re: C=1 M=1 Y=1 K=1 over whole page
Posted by: mathiasbage ()
Date: October 12, 2007 02:41AM

But won't "-A" just print with black only? That's not what I wanted.
I wanted ALL colors on top of each other. Reckon that will improve
toner coverage, fewer "pinholes", more opaque result.

I know of Olimex, but for development boards I prefer to make them
myself. Or maybe ... hmm.....

/Mathias

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Re: C=1 M=1 Y=1 K=1 over whole page
Posted by: rickrich ()
Date: October 12, 2007 05:41AM

Not "-A", i.e. leave it off.

Andy, a friend, uses Olimex for devel. boards. Two sided with plated thru holes. $33. Free panelization!

Really, you can't get it cheaper.

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