| 摘要 |
PROBLEM TO BE SOLVED: To provide an image recording apparatus capable of recording an excellent gradation image of high definition and low noise without a density change or roughness in a low-density region, while using a recording system which is not suited to multi-level recording. SOLUTION: The image recording apparatus comprises a first signal converting means 3 for converting a pixel density value for a concerned pixel into a first recording control signal which specifies a recording amount for controlling a recording means, a second signal converting means 4 for referring to the recording control signal which specifies the recording amount, in at least one neighboring pixel linked to the concerned pixel to convert the pixel density value into a second recording control signal which specifies a recording amount with which image formation based on the first recording control signal is stabilized and which is closest to the first recording control signal, a recording means 5 for recording an image on the basis of the second recording control signal, and an error diffusing means 8 for calculating an error between an input density value of the concerned pixel and a recording density value in the second recording control signal, diffusing and propagating the error to unprocessed pixels which are positioned around the concerned pixel. COPYRIGHT: (C)2005,JPO&NCIPI
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