Epson WF-R4640 User Manual - Page 321
Image is Too Dark, Back of Original Image Appears in Scanned Image, Ripple Patterns Appear in an Image
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Image is Too Dark If your scanned image is too dark, try these solutions: • Adjust these Epson Scan settings (if available) and try scanning again: • Auto Exposure • Brightness • Histogram Adjustment • Check the brightness and contrast settings of your computer monitor. Parent topic: Solving Scanned Image Quality Problems Related topics Selecting Epson Scan Settings Back of Original Image Appears in Scanned Image If an image from the back of a thin original appears in your scanned image, place a piece of black paper on the back of the original and scan it again. Parent topic: Solving Scanned Image Quality Problems Ripple Patterns Appear in an Image You may see a ripple pattern (called a moiré) in scanned images of printed documents. This is caused by interference from differing pitches in the scanner's screen and your original's halftone screen. To reduce this effect, adjust these Epson Scan settings (if available) and try scanning again: • Select the Descreening setting. • Select a lower Resolution setting. Parent topic: Solving Scanned Image Quality Problems Related topics Selecting Epson Scan Settings Scanned Image Colors Do Not Match Original Colors Printed colors can never exactly match the colors on your computer monitor because printers and monitors use different color systems: monitors use RGB (red, green, and blue) and printers typically use CMYK (cyan, magenta, yellow, and black). Check the color matching and color management capabilities of your computer, display adapter, and the software you are using to see if they are affecting the palette of colors you see on your screen. 321