Hi, if you are Postscript enabled (i.e. if you speak Postscript), you can easily patch the .ps files to obtain your negative boards, and also scale the plots.
Only few lines are needed to do the job. See "http://www.rohrbacher.net/kicad/postscript/"; for the .ps files and equivalent .pdf files. Look at the rtf file, where I have colored the modifications. I used one of the demo pcb files in the original kicad directory. The original files : "http://www.rohrbacher.net/kicad/postscript/Component.pdf"; "http://www.rohrbacher.net/kicad/postscript/Copper.pdf"; To invert the colors, you need to replace '0 setgray' by '1 setgray', and vice versa. Unfortunately, the initial blank page is white. So, plotting white on white does not the job. You need first to 'black' the whole page, or better, to 'black' only the area of the pcb, which is ecologically toner friendly ! The simply modified files : "http://www.rohrbacher.net/kicad/postscript/ExtendedInvertedCopper.pdf"; Better solution to save toner : "http://www.rohrbacher.net/kicad/postscript/InvertedComponent.pdf"; "http://www.rohrbacher.net/kicad/postscript/InvertedCopper.pdf"; For later, you must open your pcb job under kicad newpcd, and pick up the xmin, xmax, ymin and ymax of a rectangle englobing the whole pcb outile (read numbers in the status bar of the window). Then, enter these numbers in the xmin, xmax, ymin and ymax def. /xmin {19500} def /ymin {14500} def /xmax {51500} def /ymax {31500} def You need to experimentally adjust the value of the yshift : /yshift {36650} def to superimpose the black rectangle and the white copper. Best achieved using a postscript view before printing !!! Using Gostscript, you can edit and display the ps files. To get scaled plots, simply add a : /my_scale {2.0} def and my_scale my_scale scale (see Scaledxxxxxx.ps) "http://www.rohrbacher.net/kicad/postscript/ScaledInvertedCopper.pdf"; Good luck, Charles. --- In kicad-users@yahoogroups.com, Vinícius Nery Cordeiro <[EMAIL PROTECTED]> wrote: > > First of all: my name's Vinicius Cordeiro and I recently joined this > discussion list. I hope I can learn here and help as much as possible. > > Now my question: is it possible to plot (specially in postscript) > boards in negative? I mean, dark background with pads and tracks > in white? > > I'm asking because, in my printer, ploting first then printing have > much better results than printing directly, and I want to try a > technique to produce boards photographically. > > Vinicius Cordeiro (forgive my bad english) > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get to your groups with one click. Know instantly when new email arrives http://us.click.yahoo.com/.7bhrC/MGxNAA/yQLSAA/W4wwlB/TM --------------------------------------------------------------------~-> Please read the Kicad FAQ in the group files section before posting your question. Please post your bug reports here. They will be picked up by the creator of Kicad. Please contribute your symbols/modules to the library folder in the group files section. For building Kicad from source and other development questions visit the kicad-devel group at http://groups.yahoo.com/group/kicad-devel Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/kicad-users/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
