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<title>Host print transform in raster mode</title>
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<h4 id="rzaluhptraster">Host print transform in raster mode</h4>
<p>In raster mode, the host print transform builds a raster image for each
page of the output. The raster image is then compressed. AFP&trade; fonts must be
installed on i5/OS before using the raster mode. Both the SCS-to-ASCII and
AFP-to-ASCII transforms support raster mode.</p>
<p><span class="bold">Reasons to use raster mode</span></p>
<p>Raster mode preserves the relative position of text, images, barcodes,
and overlays if the output is positioned within the no print border of your
ASCII printer. Use raster mode to:</p>
<ul>
<li>Transform SCS or AFP output to formats other than printer data streams.
The host print transform function can, for example, transform SCS or AFP output to TIFF
(Tagged Image File Format) for viewing or archiving.</li>
<li>Support SCS or AFP functions not available on your ASCII printer. For
example, the IBM&reg; 4019 printer does not support multiple print orientations on the
same page.</li>
<li>Support the printing of AFP output spooled with DBCS or Unicode encoded
data.</li>
<li><img src="delta.gif" alt="Start of change" />Support printing of SCS output spooled with DBCS data on PCL
printers<img src="deltaend.gif" alt="End of change" /></li></ul>
<p><span class="bold">Enable raster mode</span></p>
<p>To enable raster mode:</p>
<ul>
<li>Install IBM AFP Compatibility Fonts (option 8 of IBM i5/OS).</li>
<li>For better font support, install IBM AFP Font Collection for IBM Operating System
(5648&ndash;B45).</li>
<li>For SCS or AFP output containing double byte characters (DBCS) install the Advanced Function Presentation&trade; DBCS Fonts for AS/400 (5769-FN1). You can also install one of the DBCS
outline font features for the IBM AFP font collection. For AFP output containing
Unicode encoded data, install the AFP Unicode migration fonts or Additional
Fonts (Option 43 of i5/OS). For SCS output, you must also specify the i5/OS
system value QIGCCDEFNT (double byte coded font).</li>
<li>Configure the host print transform to use a Workstation Customization
Object (WSCST) with the following tag:
<pre class="xmp">:RASTERMODE
SCS=YES
AFP=YES. </pre></li></ul>
<p>Raster mode does not support all printer data streams. Refer to <a href="../books/sc415605.pdf" target="_blank">Workstation Customization Programming</a>
<img src="wbpdf.gif" alt="Link to PDF" /> for detailed information
about raster mode support.</p>
<p><span class="bold">Limitations of raster mode</span></p>
<p>The following are limitations of raster mode:</p>
<ul>
<li>Raster mode requires more i5/OS resources and is slower than the host
print transform mapping mode.</li>
<li>Raster mode does not support dot matrix printers.</li>
<li>The host print transform can only produce raster images with 240 or 300
dots per inch (dpi). It does not support ink jet printers that have a resolution
of 360 or 720 dpi.</li>
<li>Raster mode does not support hardware justification of text.</li>
<li>For SCS output that contains double-byte characters, you can specify
only one double-byte coded font. Select this font by setting the QIGCCDEFNT
system value.</li></ul>
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