Patent ID: 8941846
Filing Date: 2015-01-27
Classification: G03G,H04N

Abstract:
1. A copy machine comprising: a reading unit that reads an image of a document such that a long-side direction of the document is in line with a reading sub-scan direction and a short-side direction is in line with a reading main scan direction; a rotation unit that rotates image data acquired by reading the image of the document by said reading unit; an operation panel unit that accepts copy settings from a user; an image forming unit that forms the image on paper based on image data acquired by reading the image of the document by said reading unit or based on the image data rotated by said rotation unit, such that a transport direction of the paper is in line with a writing sub-scan direction and a direction orthogonal to said writing sub-scan direction is in line with a writing main scan direction; a processor, wherein said processor calculates, in a case when the paper is fed to said image forming unit in a first direction in which a long-side direction of the paper matches said writing sub-scan direction, a first time required for a first copying process, which contains the time required for a reading process of the document and the time required for an image forming process on the paper that is fed in said first direction, based on the accepted copy settings after the operation panel unit accept the copy settings of the user; and wherein the processor calculates, in a case when the paper is fed to said image forming unit in a second direction in which a short-side direction of the paper matches said writing sub-scan direction, a second time required for a second copying process, which contains the time required for the reading process, the time required for a rotation process of the image data, and the time required for an image forming process on the paper that is fed in said second direction, based on the accepted copy settings; wherein the processor determines whether the first time required for the first copying process is shorter than the second time required for the second copying process; and wherein the processor makes said image forming unit perform the image forming process, without making said rotation unit perform the rotation process, when said first time is determined to be shorter than the second time, and makes said rotation unit perform the rotation process and then makes said image forming unit perform the image forming process when said first time is determined to be not shorter than the second time.