Vis > image_printing > Image Printing
Image Printing
The easiest way to print an image is to first convert it to PostScript format with XV. When printing images in color, it is important to keep in mind that GFDL's color printers have a tendency to print some colors (especially blues) darker than how they look on the screen. Depending on the image content it may be a good idea to lighten it before conversion to PostScript within XV. First, click in the image window with the right mouse button to bring up the main control panel. Select "Color Editor" from the "Windows" menu or press the E key. Press the "Brite" button about three or four times to lighten the image. This alteration will also change black pixels to dark gray. In order to return pixels that are supposed to be black to black again, drag the leftmost control point on the "Intensity" curve down to the bottom.
Now it's time for the PostScript conversion. Return to the main control panel by pressing "Close" in the color editor. Now press "Save", then select the PostScript format and the color type (Full Color, Greyscale or B/W Dithered). After the selection, another window will appear containing options for page size, image orientation, image size, and image position on the page. The dragable box with an X through it represents the image on the page. Press the "Max" button in order to maximize the image size while preserving the aspect ratio.
After the PostScript file has been created, it can be viewed before printing with either Xpsview, Ghostview, or preferably MGv. Finally, to print the PostScript file type:
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to print a B/W page (600 dpi) to print a B/W transparency (600 dpi) to print a color page (CalComp, 300 dpi) to print a color transparency (CalComp, 300 dpi) to print a color page (Phaser, 600 dpi) to print a color transparency (Phaser, 600 dpi) |
| As mentioned above, color pictures may not print the way you would expect, so the charts on the right can be used to check printing accuracy. There are gzip-compressed PostScript versions and bitmapped TIFF versions (~75ppi) of the four charts. They contain a color wheel, color bars, and many color patches with descriptions. The colors in these files have NOT been modified in any way to compensate for printing. Just print out the charts (preferably the PS ones) and then you can use them to compare the resulting colors to those displayed on the screen. |
PS (278K),
TIFF (390K)
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For additional printing information consult the Print Facility (GFDL only) section in the comprehensive GFDL Computer Users Guide (GFDL only).
Lasted modified: Tuesday, 09-Jan-01 15:27:02 EST