Patent ID: 6388768
Filing Date: 2002-05-14
Classification: G03G,H04N

Abstract:
An image forming apparatus comprising:a machine code storage unit for storing a plurality of machine codes, each machine code having gradation correction conditions stored corresponding thereto; a standard pattern reading unit for reading a standard pattern formed on a document, and detecting whether the read standard pattern includes data corresponds to one of the plurality of machine codes stored in the machine code storage unit; a machine code fetch unit for fetching said one of the plurality of machine codes and the gradation correction conditions corresponding thereto when data corresponding to said one of the plurality of machine codes stored in the machine code storage unit is detected in the read standard pattern; a gradation correction condition modification unit for modifying gradation correction conditions in accordance with said fetched gradation correction conditions; and a correction unit for correcting image data obtained by reading said document in accordance with said modified gradation correction conditions.