Print data processing apparatus

Details Print data processing apparatus Print data processing apparatus

1993-05-25

1996-01-23

Powell, Mark R.

395109, G06F 1500

Patent

active

054871379

ABSTRACT:
A print data processing apparatus includes input data holding means for holding basic data sent from a host computer, an intermediate code converting means for preparing intermediate codes, an intermediate code storage means for sequentially dividing the intermediate codes into a predetermined processing unit and storing the divided intermediate codes, an attribute storage means storing modification data and position data in a sheet forwarding direction of intermediate buffers, an attribute judgment means for selecting data related to a single scanning line to be currently processed based on the position data in the sheet forwarding direction, a print data preparing means for preparing print data, an output data holding means for holding the print data, and a print data transfer means for outputting the print data to a print mechanism. The print data processing apparatus judges which intermediate buffer has the data related to a scanning line area to be processed based on the position data in the sheet forwarding direction in an attribute buffer in the developing operation by the output data holding means. As a result, once a scanning line is printed by the print head, the print head no longer has to print missing portions by going back to a scanning line before such already printed scanning line.

REFERENCES:
patent: 4330834 (1982-05-01), Murphy
patent: 4418344 (1983-11-01), Brown
patent: 4680578 (1987-07-01), Homig et al.
patent: 4922237 (1990-05-01), Inoue
patent: 5033880 (1991-07-01), Kageyama et al.
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patent: 5093903 (1992-03-01), Sudoh et al.
patent: 5153575 (1992-10-01), Watts, Jr. et al.
patent: 5251293 (1993-10-01), Ishii et al.

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