HP 5961-0509 manual Raster Area, 15-2Raster Graphics

several binary data compression methods, and additional reduction techniques associated with the raster area feature (see Figure 15-2).

Figure 15-2 Raster Area

Data compression methods include: run-length encoding, tagged image file format (TIFF), delta row, and adaptive compression. These techniques are described in detail later in this section, under the Set Compression Method command.

In addition to the compression methods, the raster area feature provides some other raster reduction techniques which utilize a defined raster area. The raster area is defined by a width and height which are set using the Raster Width and the Raster Height commands.

Zeroed rows at the top and within the raster image can be eliminated by using the Y-offset feature. Y-Offset identifies how many rows to skip (zero fill). The Y-offset command specifies the Y-offset or number of rows for the printer to fill with zeroed rows. This provides a reduction in data for increased efficiency.

Trailing zeroed full rows at the end of the raster image need not be sent. The printer automatically fills in any unsent zeroed rows from the end of the raster image (last raster row with any “1”s) to the bottom of the raster area.

15-2Raster Graphics EN