Abstract: A method for performing duplex copying of a document having a first side with a first image and a second side with a second image includes scanning only the first side of the document under a first imaging condition to retrieve first information relating to each of the first image and the second image; scanning only the first side of the document under a second imaging condition to retrieve second information relating to each of the first image and the second image; determining from the first information and the second information contents of the first image on the first side of the document; and determining from the first information and the second information contents of the second image on the second side of the document.

Abstract: A method of reducing a consumption of imaging substance when forming an image includes placing an object in an electronic form on a grid, the grid having a plurality of grid units arranged in rows and columns, wherein each grid unit containing a portion of the object is represented by a first designation and each grid unit not containing a portion of the object is represented by a second designation; and determining from among the plurality of grid units each grid unit initially having the first designation at an interior portion of the object that will be converted to the second designation in a conversion process.