Temporary Vs. Permanent Fonts; Deleting Fonts - HP PCL 5 Reference Manual

Temporary vs. Permanent Fonts

Once downloaded, a font is automatically designated as temporary. A
temporary soft font is deleted from user memory during a printer reset
or when a Typeface List, a Font Printout or a self-test is performed
from the printer's control panel. A soft font can be designated as
permanent to prevent the printer from deleting it during a printer reset.
A soft font is designated as temporary or permanent by referencing its
ID number and using the Font Control command (refer to "Font
Control Command" later in this chapter).
Note
Both temporary and permanent fonts are deleted from user memory
whenever the printer's power is turned off.
Switching printer languages ("personalities"), changing resolution, or
changing the Page Protection setting also deletes temporary and
permanent fonts from user memory in some printers (refer to the
appropriate printer User's Manual for specifics).
An existing font is deleted when a new font with the same ID number
is downloaded. The new font replaces the existing font (whether
temporary or permanent).

Deleting Fonts

There are several mechanisms provided by PCL font management
that delete soft fonts from user memory. These include commands to
delete all soft fonts, all temporary soft fonts, or an individual soft font
by reference to its font ID number (refer to the Font ID and the Font
Control commands described on the following pages).
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