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When you print a presentation with transparent fills and graphics in Microsoft PowerPoint, the printed output may not look as good as the slide does on the screen. Instead, the transparent regions may appear grainy and jagged.
PowerPoint supports the use of high-quality images on screen, projector-driven presentations. This on-screen feature makes it more difficult to match the display on the screen with the printed output.
A feature that was added for on-screen presentations was support for true transparent blending. True support of transparency means that the color in a semitransparent pixel is blended with the color behind it. Transparency in graphics is available in PowerPoint in a number of ways: images, solid color fills, and gradient fades.
As of March 2003, there is a technological gap between screen and print support for transparent pixels. Printer technology does not support a color format that includes the transparency channel. Printers only support the following color formats: RGB, CMYK and grayscale. Printers cannot blend pixels together in the same manner that occurs for on-screen viewing.
If you are creating a presentation that is destined for printed output, the best workaround is to avoid using semitransparent objects if you can.
If you must use semitransparent objects, and if the way that PowerPoint simulates the transparent effect for print is not satisfactory, there are workarounds to blend the transparent pixels together before the effect is sent to the printer.
You can create an image of the slide or a portion of the slide. This blends transparent pixels together correctly when the image is created.
If there is only a small region of the slide that is covered with a semi-transparent object, and if that area has an opaque background, a better workaround is to group those shapes and then convert them to a single image. Again, this blends the transparent pixels together when you create the image.
Method 1: Convert the objects to an image
Method 2: Converting the whole slide to an imageIf the transparency effect includes many objects on the slide, you can save the whole slide as a graphic and then print it separately or as part of the presentation.