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Overview
Printing flow
When using this printing system as a printer, the flow of the main process is
described below.
Print commands transmitted from the application are received by the printer
driver.
Data is transmitted to this machine over a USB interface when this machine
is used as a USB printer, or over an Ethernet interface (TCP/IP, IPX/SPX, Ap-
pleTalk) when this machine is used as a network printer. The data is then de-
livered from this machine to the printer controller, which performs image
rasterization (development of output characters and images to bitmap data).
Finally, this data is printed from this machine.
Print
Original documents can be scanned in the copy function or network scan
function while this machine is operating as a printer.
To use this machine as a copier, press the [Copy] key on the control panel.
When a print job is received during copying, the data is stored in the memory
of this machine. When copying is complete, the print job is automatically
printed.
C451
Computer
Used as a USB
printer
Application
Printer driver
USB
Printer controller
PS/PCL processing (rasterizing)
Used as a
network printer
Application
Printer driver
Ethernet (TCP/IP, IPX/
SPX, or AppleTalk)
Machine
1
1-4
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