Patent ID: 7359087
Filing Date: 2008-04-15
Classification: G03G,H04N

Abstract:
1. A printing apparatus comprising: a first image forming unit which forms a first image part which is formed from large dots having a size larger than a minimum dot size readable by a color copying machine such that, if the printed image is reproduced by the color copying machine, a reproduction of the first image part outputted by the color copying machine has a same color as the first image part; a second image forming unit which forms a second image part which is formed from large dots having a size larger than the minimum dot size and small dots having a size smaller than the minimum dot size such that, if the printed image is reproduced by the color copying machine, a reproduction of the second image part outputted by the color copying machine has a different color than the second image part; a reproduction checking image forming unit which produces, as an original, a reproduction checking image which includes the first and second image parts where, if the reproduction checking image is reproduced by the color copying machine, a reproduction of the reproduction checking image outputted by the copying machine has a different color than the original reproduction checking image; and a printing unit which prints, in color as the original, the reproduction checking image produced by the reproduction checking image forming unit.