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Chapter 2
2-2
2.1.2 Print Signal Sequence
0017-4696
The signal sequence from when the printer receives the print signals until printing starts is shown in Figure.
F-2-2
a) The printer driver on the host computer transmits print data, including command data, to the printer after
compressing the image data, without resolution, color and 12-color binarization conversion.
To achieve high-quality image output, the image processing table data used for image data color conversion and
binarization conversion are generated as command data to meet the Media Type and other specifications of the
printer driver.
b) This printer receives print data from the individual interfaces on the main controller, transmitting the received
print data to ASIC (IC1).
aa
USB LAN
b
b
b
ASIC (IC1/L-COA)
EEPROM
DDR-SDRAM
EEPROM
g
FLASH ROM
ASIC (IC2)
EEPROM
e
e
e,h
e
f
f
h
i
i
i
SDR-SDRAM
i
c
d
:
:
:
:
:
:
:
Image data
Mask pattern data
Heat pulse
Command data
PCI bus
Data bus
Host computer
Printer driver
Interface unit
Expansion
Image processing
unit
Operation panel
Latch IC
Printhead
Carriage PCB
Ink tank
Sensor and drive unit
Main controller
Universal sirial bus