Tandem Copying - Canon Image Reader-A1 iR5000i Service Manual

CHAPTER 2 MAIN CONTROLLER

3.1.3 Tandem Copying

Tandem copying occurs when an aditional amchien is selected besides the machine on the
printer selection scren; intit, the image read by the machine is printed on the machine and
the other machine, dividing the data automaically so that the highst rate of otupout may be
attained.
All image data is writeen to the hard disks of both machines, and is read page by page for
transmission to the output printer units until all copying jobs are done. In other words, steps
(6) through (10) and steps (15) through (19) are repeated on both mahcines.
To make ufse of the function, the following selectiongs must be made, thereby registering
the IP address other machine: user mode>copier use>remote copy printer.
If the auto acquisition function for IP address (DHCP, BOOTP, RARP) is
used in the user's network environment, the IP address of the machine is at
REF.
time forced to change, disabling the selected machine to serve as the printer
of remote copying.
Network
PCB
(12)
Network
PCB
HDD
2-14 S
System controller PCB
Main memory
Page
HDD
memory
for
(5)
reading
Compressed
data
(6)
Page
Compressed
data
memory
for
(11)
printing
Compressed
data
Main memory
Network
HUB
Compressed
System controller PCB
data
Main memory
(13)
Page
Compressed
memory for
data
transmission
(14)
Main memory
Print page
(15)
memory
F02-301-03
COPYRIGHT © 2001 CANON INC.
Reader unit
(1) 8-bit
Image
processor PCB
(2)
Read image
Binary
processing unit
(3)
Black-and-white
Binary
compression
(4)
circuit
Compressed
Compressed
Binary
data
data
(7)
Extension
Compressed
data
(8)
circuit
Binary
Compression
data
data
(9) Print image
processing block
Binary
Binary
data
(10) data
Printer unit
Image processor PCB
(16)
Extension
circuit
Print image
processing block
(17)
(19)
(18)
Printer unit
Output side
2000 2000 2000 2000 CANON iR5000i/iR6000i REV.0 JUNE 2001
Binary data