Patent ID: 8253992
Filing Date: 2012-08-28
Classification: H04N

Abstract:
1. An image copier comprising a scanner configured to read an image and a printer configured to form the image on a sheet, wherein the scanner includes: a document table configured to position an original document; a document holding cover configured to hold the original document on the document table; a cover opening/closing detection sensor configured to detect an opening/closing state of the document holding cover; light-emitting elements for detecting a size of the original document, two-dimensionally-arranged in a main scanning direction and a sub scanning direction, placed on an upper side of a surface of the document table, and configured to emit light to the surface of the document table; a light-receiving element, configured to receive the light emitted from the light-emitting elements, placed on a lower side of the surface of the document table; an original document size detection unit configured to determine the size of the original document based on a result of detecting levels of the lights emitted from the light-emitting element when the cover opening/closing detection sensor detects the closing state of the document holding cover; and a background correction unit configured to perform a process of correcting a background of the image read by the scanner.