Those are the PPDs for a Canon Bubble Jet Color 600 and 800, respectively. There are two other PPD files in the Ghostscript directory: cbjc600.ppd and cbjc800.ppd. Aside from the fact that the print calls for metallic silver ink, which can't be done on an inkjet, my file obviously rendered incorrectly on his setup (gaps between the edges of some of the gradients and the outlines, among other issues), and I have no idea why he didn't notice it.Д¬lick to expand.Have you successfully printed out different dot shapes other than the default round ones? If so, which other shapes have you printed? In Illustrator there was no option to change the dot shape, and I suspected it was because the ghostpdf.ppd doesn't support any other dot shapes, so I tested my theory. Later on, I released the file publicly, and someone decided to print it out on an inkjet printer. It has had two print runs, and I worked with both screen printers who did the runs to ensure they had no problems with the file the results were beautiful in both cases. I created that 'Super' vector file for screen printing. I've seen that happen with one of my vector files before, though it wasn't my concern. Vector has the ultimate print quality and versatility, but unless you take steps to specifically confirm that it is being rendered correctly on the recipient's setup, you run the risk of a corrupted print. Rasterization definitely ensures that it will be rendered correctly on any setup, but there can be loss of print quality and versatility. I agree that the potential for vector files to be rendered incorrectly on different setups is a problem, and there is no perfect solution. I'm sure that 1200 DPI would match the print quality of the vector file on my printer, at least from the perspective of the naked eye, but a Postscript file generated from a 600 DPI, letter-size image is already quite cumbersome (219 MB in my case, compared to 1.46 MB for the vector version of the Postscript file). I think the difference would be even more apparent on a film positive print with maximum quality print settings though. Then I tried it with a 600 DPI version, and the quality was very close, but looking closely under good light, you could still see that the vector print was a little better. I first tried it with a 300 DPI rasterized version, and the quality was noticeably degraded, i.e., you can see slight jaggedness on the outlines. I did a couple of print tests with raster files, using the same vector source file as my other tests, and the same plain paper / Fine quality setting on my printer. a pocket print, a chest print, or a giant sign for that matter, with as-good-as-possible results in all cases. And of course, it can be infinitely scaled without quality loss, so the same file can be used for e.g. What I like about keeping it vector is that vector maxes out the print-quality capability of any printer that exists or will ever exist. Selecting either of those PPDs, rather than the ghostpdf.ppd file, indeed allows you to change the dot shape, though you only have three options in both cases: Dot, Ellipse, and Line:Д¬lick to expand.That's certainly true. So I tried it again and told it to just print pages 1 to 1 and that solved that issue.Д®dit 2: About the dot shape: I suspected that the reason you couldn't change it was because the ghostpdf.ppd file doesn't support any other dot shapes, so I tested my theory.

It presumably was going to print out 4 identical black copies (I stopped it partway through the second copy as soon as I could see it was just as black as the first copy). When I saw this I was worried that it might print out 4 copies each in a different color (i.e., one copy in cyan, one copy in magenta, one copy in yellow, and one copy in black), but it didn't. I will try that later.Д®dit: Okay, I tried it with 100% CMYK and it works fine, with one caveat: for some reason, the Postscript file it generates wants to print out 4 pages instead of 1. If I were printing a film positive rather than a test print on plain paper, I would use 100% CMYK, and I assume you would select 45 lpi and 22.5В° for all 4 colors.

To keep things simple for the test, I made the color of the graphic simply black (0% CMY, 100% K).

You can't change the dot shape here, but the Default Halftone is round. For Mode select Separations (Host-Based), then change the frequency of black to 45 lpi and the angle to 22.5В°.

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