Canon PIXMA MP280 On-Screen Manual - Page 546

Image Settings Page 546 of 707 pages Gutter Shadow Correction Use this function to correct shadows that appear between pages when scanning open booklets. When you set the Gutter Shadow Correction setting in the preview image, the result will be reflected. Preview the effects before scanning, as results vary depending on the type of document and how it is pressed. Unclear or blurred text/lines caused by curved pages are not corrected. None Gutter shadow will not be corrected. Low Select this when the effect level is too strong with the medium setting. Medium It is recommended that you normally select this setting. High Select this when the effect level is too weak with the medium setting. Important Do not place items that weigh 4.4 lbs (2.0 kg) or more on the Platen. Also, do not press on the document with a force exceeding 4.4 lbs (2.0 kg). If you press heavily, the scanner may not work correctly or you might break the glass. Align the document with the edge of the Platen. If not, the shadow will not be corrected properly. Shadows may not be corrected properly depending on the document. If the page background is not white, shadows may not be detected correctly or may not be detected at all. While scanning, press down on the spine with the same amount of pressure you used to preview the scan. If the binding part is not even, the shadow will not be corrected properly. How to place the document depends on your model and the document to be scanned. Note Cover the document with black cloth if white spots, streaks, or colored patterns appear in scan results due to ambient light entering between the document and the Platen. If the shadow is not corrected properly, adjust the cropping frame on the preview image. Adjusting Cropping Frames Page top