| 摘要 |
IM-0417 TITLE DIGITAL ELECTRONIC SYSTEM FOR HALFTONE PRINTING A system for producing an image by halftone printing comprises generating halftone dots from electronic data by scanning across across a raster of write spots in a recording medium, spot-by-spot and line-by-line. Each dot is defined within a repetitive dot template containing a plurality of write spots. The system writes at selective write spots by sending a present write-spot address signal obtained from a writespot address register to a spot-status Look-Up-Table for selecting a predetermined value for each write spot, the predetermined value determining an on-off status for the present write spot. The spot-status Look-Up-Table has a plurality of predetermined values corresponding, respectively, to addresses of write spots within the dot template. In the present invention, the selective writing step is performed by sending the write-spot address signal also to a pointer Look-Up Table for generating an address pointer signal uniquely associated with a particular write-spot address code, and transmitting the address pointer signal to the writespot address register in order to obtain the next writespot address signal.
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