Canon 2417B002 User Manual - Page 59

■ Selectable Background You can specify whether the background behind the scanned image is black or white. The background is changed by rotating the platen rollers to expose either the black or white part of the rollers, according to the selection specified in the ISIS/TWAIN driver. Platen Rollers (Black/White Background Rollers) Black White Brush IMPORTANT Image processing performance depends on the selected background (black or white). (See "Background Color" on p. 8-18.) Chapter 4 Other Functions ■ Folio Scan Use Folio Scan to scan very large documents (up to 22" × 34"/A1 size) by folding each document sheet and scanning the front and back. The resulting images are then recombined to reconstruct an image of the entire page. Front (when folded) Back (when folded) Bypass Mode Key Reconstructed Image IMPORTANT • Folio scanning requires that you feed each page manually (The Bypass Mode key is lit). • Fold each page with a sharp, straight crease. Otherwise, the paper may jam or the image may be misaligned. • Seam artifacts may appear in the reconstructed image because of the crease line or differences in the loading position of each side. • The scan image of the front side becomes the left half of the reconstructed image. • The maximum document size for Folio Scan is 22" × 34"/A1. • 22" × 34"/A1 document pages should be folded lengthwise and scanned with the following settings: Scanner: Long Document Mode Page Size: Auto-Detection • Some scanning mode and resolution settings may produce incomplete page images. In this case, try decreasing the resolution or, if scanning in color mode, switch to black and white. 4-7