| 摘要 |
A non-impact printing apparatus and method for tri-level color xerographic recording. A binary printhead having M recording elements per inch is used to record each mainscan line (1/M lines per inch) of pixels using two sublines for recording each mainscan line. In a first embodiment, pixels to be developed in a first color are recorded during a first subline, and during a second subline of pixels to be developed in a second color are recorded using a different exposure duration from that used in recording the first subline of pixels. In a second embodiment, pixels of the first and second colors are recorded during a first subline and supplementary exposure is provided for completing the recording of pixels of the second color during a second subline of recording.
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