| 摘要 |
<p>1. A mixed reproduction method for reproducing on the same page character data defined in matrix form and graphics data defined in serial form for each analysis line, by means of a common needle printhead, the needles being disposed in at least one column and adapted to print, on successive scanning lines, elementary points defined ty the successive columns of character data in their matrix form and columns of graphics data produced by processing successive analysis lines of graphics data, the number m of the needles in the printhead being equal to or a submultiple of the number of character data in the columns in their matrix form and the needles being disposed to obtain a printing increment for elementary points equal to the vertical definition of the character data but less than that of the graphics data processed in columns, characterized in that, for processing the graphics data in columns, there is adopted a compression ratio deduced from a value close to that of their vertical definition and of the vertical definition of the character data, whereby to an integer number r of successive graphics data analysis lines there correspond successive columns of n (where n =< m) graphics data at the vertical definition equal to said printing increment, and that there are defined for each page scanning line two printhead passes, a character pass and a graphics pass, for which the needles are respectively fed with character data and graphics data.</p> |
