Specifications

CHAPTER 3
LaserWriter Pro Software
Page Device Parameters 31
Page Device Parameter Summary 3
Table 3-1 lists the page device parameters, lists their defaults, and provides additional
technical information.
Table 3-1 Page device parameters
Key Type Default Comments
BeginPage procedure {pop} See Note 1.
EndPage procedure {exch pop 2 ne} See Note 2.
ExitJamRecovery boolean false Value is constant and persistent
across power cycles. See Note 3.
HWResolution array [600 600] Controls the resolution of the output.
Legal values are [300 300] and
[600 600]. This key is treated as a
request. The default policy is 2,
signifying user interaction. In this
case, the interaction is implicit and
results in lower resolution. This key
in the pagedevice directory still
shows the requested resolution.
The resolution actually achieved
may be obtained by using the
HWResolution procedure in the
ActualValues ProcSet . Value is
constant.
ImagingBox array or
null
null In some configurations, this may be
set to a default to reduce the imaging
area allowed to less than a full page.
See Note 2.
InputAttributes dictionary Depends on
configuration
The values x and y depend upon
which paper tray is installed. See
Table 3-2. The multipurpose tray is
always present. However, if the
optional cassette tray assembly is
installed but missing, the correspond-
ing entry in the InputAttributes
dictionary is set to null. This can only
happen when the printer is turned on
and the tray is not installed. Table 3-3
lists the slot numbers and correspond-
ing input sources. If a job is sent to
the printer and the tray is removed,
the PostScript interpreter assumes a
tray of the same size will be installed
and sets the attributes accordingly. If
a different tray is installed, the
attributes change to reflect the charac-
teristics of the new tray. There are
values of matching tolerance for the
PageSize parameter. See PageSize
later in this table. See Note 2.
continued