Canon imagePROGRAF W6200, Руководство по обслуживанию, Страница: 112 / 311

a) The printer driver in the host PC compresses the image data, and then sends the
command data and other print data to the printer.
The resolution conversion, color conversion process, and six-color binary conversion
process for the image data are not performed.
The image process table data is used in the color conversion process, binary
conversion process, and other operations of the image data to achieve a high-quality
image output. This data is created and sent as command data based on the Paper
Type setting specified in the printer driver.
a') An optional software RIP performs resolution conversion of the image and then
sends this image data to the printer together with the command data after a color
conversion process or six-color binary conversion is performed.
b) This printer receives the print data from the interfaces controlled by the interface
unit of the system controller.
The received print data is sent to the CPU or ASIC.
c) The system controller expands the print data that was sent to the CPU or ASIC, and
then performs resolution conversion, color conversion and six-color binary
conversion, while storing data in the SDRAM or FCRAM at the optimal timing.
d) The ASIC in the system controller converts the print data to six-color binary image
data and command data and sends the data to the ASIC in the engine controller.
e) The ASIC in the engine controller stores the received image data in the SDRAM at
the optimal timing, and the data is combined with the mask data in the ASIC and
output in coordination with the discharge timing. The ASIC also sends the command
data from the system controller to the CPU.
f) The CPU in the engine controller obtains the mask pattern data from the FLASH
ROM based on the command data, printhead information from the EEPROM in the
printhead, and internal temperature from the latch IC on the head relay PCB, and
sends this data to the ASIC.
g) The ASIC in the engine controller sends the image data combined with the mask
pattern to the printhead as print signals while converting to data corresponding to
the printhead information and internal temperature. During this operation, heat
pulses are sent to the printhead for performing the optimal head driving.
g') The print signals undergo differential processing by the driver ASIC to reduce noise
and then are restored by the receiver ASIC.
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W6200
Part 4: Technical Reference