HP laserjet 3390, 3392 all-in-one Manuale Di Servizio
Fax page storage in flash memory
Fax pages are the electronic images of the document page. They can be created in any of three ways:
scanned to be sent to another fax machine, generated to be sent by the computer, or received from a
fax machine to be printed.
scanned to be sent to another fax machine, generated to be sent by the computer, or received from a
fax machine to be printed.
The all-in-one stores all fax pages in flash memory automatically. After these pages are written into flash
memory they are stored until the pages are sent to another fax machine, printed on the all-in-one,
transmitted to the computer, or erased by the user.
memory they are stored until the pages are sent to another fax machine, printed on the all-in-one,
transmitted to the computer, or erased by the user.
These pages are stored in flash memory, which is the nonvolatile memory that can be repeatedly read
from, written to, and erased. The all-in-one has 4 MB of flash memory, of which 3.4 MB is available for
fax storage. The remaining 0.6 MB is used for the file system and reclamation. Adding RAM does not
affect the fax page storage because the all-in-one does not use RAM for storing fax pages.
from, written to, and erased. The all-in-one has 4 MB of flash memory, of which 3.4 MB is available for
fax storage. The remaining 0.6 MB is used for the file system and reclamation. Adding RAM does not
affect the fax page storage because the all-in-one does not use RAM for storing fax pages.
Stored fax pages
The user can reprint stored fax pages in case of errors. The all-in-one will re-send stored fax pages after
a busy signal, comm error, no answer, or power failure. Other fax devices store fax pages in either
normal RAM or short-term RAM. Normal RAM immediately loses its data when power is lost, while short-
term RAM loses its data about 60 minutes after power failure. Flash memory maintains its data for years
without any applied power.
a busy signal, comm error, no answer, or power failure. Other fax devices store fax pages in either
normal RAM or short-term RAM. Normal RAM immediately loses its data when power is lost, while short-
term RAM loses its data about 60 minutes after power failure. Flash memory maintains its data for years
without any applied power.
Advantages of flash memory storage
Fax pages that are stored in flash memory are persistent. They are not lost as a result of a power failure,
no matter how long the power is off. Users can reprint faxes in case the print cartridge runs out of toner
or the all-in-one experiences other errors while printing faxes.
no matter how long the power is off. Users can reprint faxes in case the print cartridge runs out of toner
or the all-in-one experiences other errors while printing faxes.
The all-in-one also has scan-ahead functionality that makes use of flash memory. Scan-ahead
automatically scans pages into flash memory before a fax job is sent. This allows the sender to pick up
the original document immediately after it is scanned, eliminating the need to wait until the fax is
transmission is complete.
automatically scans pages into flash memory before a fax job is sent. This allows the sender to pick up
the original document immediately after it is scanned, eliminating the need to wait until the fax is
transmission is complete.
Because fax pages are stored in flash memory rather than RAM, more RAM is available to handle larger
and more complicated copy and print jobs.
and more complicated copy and print jobs.
ENWW
Fax functions and operation
105