Raster Graphics Command Sequence

PCL raster commands include: Start Raster Graphics and End Raster Graphics commands, Transfer Raster Data by Row, Raster Compression, Raster Presentation, Raster Resolution, Raster Height and Raster Width (which define the raster area), and Raster Y Offset commands. The normal sequence of execution for these commands is shown below:

Table 15-1

Raster Presentation

Raster Resolution

Raster Height

Raster Width

Start Raster Graphics

Y Offset

Raster Compression

Transfer Raster Data

￿

Transfer Raster Data

Y Offset

Transfer Raster Data

￿￿￿￿￿￿

Y Offset

Raster Compression

Transfer Raster Data

￿￿￿￿￿￿

Raster Compression

Transfer Raster Data

End Raster Graphics

The emphasis in the previous command sequence is that the Raster Presentation Mode, Raster Resolution, Raster Height, and Raster Width are all set outside the start..data..end sequence of commands. Also, the entire image is sent during the start..data..end sequence, choosing the most effective compression method for each raster row of data.

15-4Raster Graphics

EN

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HP 5961-0509 manual Raster Graphics Command Sequence, 15-4Raster Graphics