| 摘要 |
PURPOSE:To achieve the improvement of head shading by correctly performing the detection of recording density ununiformity of a recording head and special fixation of the recording element position of the recording head, and also always accurately performing the correspondence between the recording element position and detecting density data CONSTITUTION:A pattern B printed by driving a specific recording element is simultaneously formed in addition to a pattern A for detecting the recording density ununiformity of a recording head, and by the use of both the patterns A and B, head shading is effected. Namely, the correspondence between the density data of the density ununiformity detecting pattern A and each recording element is conducted in use of the address of the density data in the memory of the recording element position detecting pattern B accommodated in the memory. |
