| 摘要 |
A hyperacuity printing system for rendering image data on a recording medium, the image data being rendered as an array of pixels across the recording medium in a fastscan direction, and an orthogonal slowscan direction. The system includes a data source for supplying grayscale input image data and a scanning device for rendering grayscale output image data, the scanning device having a writing device for writing scan spots on the recording medium at a writing pitch in the slowscan direction and a writing pitch in the fastscan direction. The system also includes transformation circuitry for transforming the grayscale input image data into grayscale output image data, the transformation circuitry including a halftoner, a thresholder, and a selection device, where the selection device selects either the thresholder or the halftoner to provide the grayscale output image data. The selection device includes a macro selection function and a micro selection function, the micro selection function being able to select the thresholder or the halftoner with a precision finer than the writing pitch in either the slowscan or the fastscan direction. Finally, provided is a modulating device coupled between the transformation circuitry and the scanning device for intensity modulating each of the scan spots in accordance with the grayscale output image data.
|
