Eficolor Release Notes

EfiColor XTension Notes Topics Color Conversions for PICTs Color Shifting Color Simulations GCR and CMYK Importing EPS and DCS Files from Other Programs Installing EfiColor on Systems with EfiColor Already Installed Missing Picture Profiles None Profile Setting Printing to a Calibrated Fiery Printer Profiles Displayed from Document, Master Pages Same Source and Target Profiles Selected Save Page as EPS Separations for CMYK Pictures Separations for QuickDraw Printers Color Conversions for PICTs EfiColor will correct the screen display of all images, except when the disk file is a PICT. In this case, EfiColor will correct the colors of the image when printing, but will not correct the screen display. If you want EfiColor to correct PICT images for display, you should convert your PICT files to TIFFs using another appli- cation. Color Shifting Highly saturated RGB colors may undergo color shifting when printing to CMYK devices with EfiColor. This is because the EfiColor Photographic and Solid Color rendering styles are not intended for use with highly sat- urated colors, such as the default QuarkXPress Red, Blue, and Green colors, or the colors you might find in a bar chart. The EfiColor Processor v. 2.0 will introduce the Business Graphics rendering style, which will properly con- vert highly saturated RGB colors when printing to CMYK devices. The EfiColor Processor v. 2.0 will be avail- able separately or in EfiColor Works in the spring of 1994. Color Simulations To simulate the colors that will be rendered from your final output device, you should pre-separate your images as CMYK TIFFs for your target device. When you import these CMYK TIFFs into QuarkXPress, select Solid Color from the Rendering Style pop-up menu in the Get Picture dialog box (File —> Get Picture). EfiColor will adjust to simulate the colors as they will appear on-press. This procedure is especially important when you use a dye sublimation printer, which has a larger color gamut than most printing presses. If you do not pre-separate your images, EfiColor will expand the gamut of the pic- ture to fulfill the capabilities of the device. The result may be pleasing, but will not match the colors produced on-press. GCR and CMYK GCR is applied when RGB colors are converted to CMYK colors. Therefore, GCR has no effect on colors or images that are already defined in CMYK. As a result, when you import a CMYK file into QuarkXPress and make separations, you will not be able to adjust GCR. If the image was converted from RGB to CMYK in an image editing program like Cachet or Photoshop™, then the GCR should have been applied in that program. Importing EPS and DCS Files from Other Programs The EfiColor XTension does not convert colors when images from EPS or DCS files are printed. However, if you save these images as CMYK TIFFs, EfiColor will convert them when printing to a composite color printer [when Separation is set to Off in the Print dialog box (File —> Print)]. Installing…