Canon imageFORMULA CR-180 CR-180 Instruction Manual - Page 43

4.1 Documents Wrinkled or creased paper Curled paper Torn paper Paper with clips or staples Carbon backed paper Coated paper or fax recording paper Extremely thin paper Paper with binding holes Note ● Note that mixing documents of different thickness and size may cause a malfunction during feeding. ● Curled, wrinkled, or folded documents may cause an error. If this happens, straighten out the curls, or reduce the number of documents loaded. ● Documents containing text or pictures within 0.2" (5 mm) of its edges, or documents with a color background, may cause errors in automatic size detection. 4 Using Infrared Double Feed Detection One of the double feed detection functions that the scanner is equipped with uses the penetration of infrared light to detect when two or more documents are fed at the same time. Documents with glossy finish or colored background may cause false double feed detections when using the infrared double feed detection function. If false detections happen too often, disable the double feed detection function. Also, the thickness of the documents should be from 0.004" to 0.005" (0.1 mm to 0.14 mm) to use the infrared double feed detection function. Please note that double feed detection cannot be detected for thicker or thinner documents. ● The Scanning Utility provided includes a specialized driver for the infrared double Note feed detection function. The infrared double feed detection function cannot be used with ISIS/TWAIN compatible applications used with the ISIS/TWAIN driver. ● Besides infrared light, the double feed detection function also uses document length and thickness to detect if two or more documents are fed at the same time. However, they are different from the double feed detection functions that can be used with the specialized Scanning Utility driver and ISIS/TWAIN driver. Refer to the Help files for the various applications for details. 39