IBM 6400i Setup Manual page 192

Chapter 4
IPDS Feature
Image Quality
Determines the quality for image printing. Override Host must be enabled to
use Image Quality. If Override Host is disabled, then the image is assumed to
be 144 by 144 and the image is printed at 120 by 144.
•
Low (the default). Accepts images with 144 by 144 and prints images at
120 by 144. With this setting, the image is converted from 144 by 144 to
120 by 144. Since there is some conversion required, there may be some
differences between the original image and the printed image. Review the
note below for more information.
•
High. Accepts images with 120 by 144 and prints images 120 by 144.
With this setting, the image is printed as is and requires no conversion.
Because no conversion is required, there is more fidelity between the
original image and the printed image.
NOTE: There is one bit of image data per pel. If your print job contains an
IPDS Emulation Mode
Select which type of printer you want IPDS to support. You can choose either
to emulate a 4234 or you can choose 6408/6412. You should choose which
mode you use based on your software applications. For instance, if you are
using PSF/MVS, then you would choose 6408/6412 as PSF/MVS provides
support for this printer.
•
4234 (the default). IPDS supports 4234 printer functions. This is the
default which should be used most often. If you are using IPDS with PSF
applications, except PSF/MVS, make sure you select 4234.
Please review Chapter 3, "IPDS Commands Reference" in your 6400
IPDS Programmer's Reference Manual for information on using IPDS
commands when you select 4234 from the IPDS Emulation Mode menu.
•
6408/6412. IPDS supports 6408/6412 printer functions. Use this value
when you are using IPDS with PSF/MVS. This value enables IPDS and
PSF/MVS to take advantage of 6408/6412 printer functions which are
supported directly by PSF/MVS. Other PSF applications only support this
printer as a 4234 printer.
Please review Chapter 4, "IPDS Command Differences" in your 6400
IPDS Programmer's Reference Manual for information on using IPDS
commands when you select 6408/6412 from the IPDS Emulation Mode
menu.
NOTE: If you want to use the value 6408/6412 as the default value, you will
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image created to print 144 by 144, which is very common for IBM
4234 printers, some bits of data will be dropped out to support the
best fit resolution, which is 120 by 144.
When printing jobs with images created for an IBM 4234 printer, you
will want to print a few samples to ensure the results are satisfactory.
need to select 6408/6412 as the default, save the value as a custom
set, and then power the printer off and back on again.