Canon MultiPASS C530, Руководство по обслуживанию

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MultiPASS C530/C560 Chapter 2: Technical Reference
Figure 2-18 Printing Signals
c) Color BJ Cartridge (Multi Drop) Drive Control
The multi drop type color BJ cartridge’s printhead has 136 nozzles and each nozzle has two heaters
located one infront of the other. The printing operation using this multi drop type color BJ cartridge is
(dependent/influenced) by how these heaters are controlled.
The sequence of ink ejection is as follows. The 136 nozzles has 8 function blocks (16 nozzles/block)
and each block is separated into two functional units. Hence, each functional unit has 8 nozzles. Ink is
consecutively ejected from each unit.
Selection of the nozzles to be ejected is done by BLOCK ENABLE signals 1, 2 and 3 (BENB 1, 2, 3)
and the EVEN/ODD ENABLE signal (Even/Odd ENB). HEAT ENABLE (HENB 0, 1, 2, 3) is the heat
drive control signal for ejecting ink.
The HEAT ENABLE signal controls ink ejection as follows:
HENB 0: signals the nozzle (black) at the back
HENB 1: signals the nozzle (black) at the front
HENB 2: signals the nozzle (color) at the front
HENB 3: signals the nozzle (color) at the back
The HEAT ENABLE signal is made of up the prepulse and the main pulse. To optimize ink ejection,
the head rank, printer’s inner temperature and head temperature is constantly monitored. The ink is
ejected by varying the HEAT ENABLE pulse width.
HLATCH
0
1
2 3 4
128or136
1(0) 0(1)
1(0) 0(1)
1(0) 0(1)
1(0) 0(1) 1(0) 0(1)
1(0) 0(1)
1(0) 0(1)
HDATA
HCLOCK
Odd ENB
Even ENB
B ENB 0
B ENB 1
B ENB 2
H ENB 0,1,2
H ENB 3
Odd ENB
Even ENB
B ENB 0
B ENB 1
B ENB 2
H ENB 0,1,2
H ENB 3
Data transmission to shift resistor
Head Driving in HQ Mode (Divided into 16)
Head Driving in HS Mode (Divided into 8)
1 Block
154
µ
s (6.51kHz)
77
µ
s (13.02kHz/9.76kHz*)
109
µ
s (9.19kHz)
HQ
720dpi/ Smoothing
HS
Pre-Pulse
Main Pulse
1(0) 0(1) 1(0) 0(1) 0(1) 1(0) 1(0) 0(1)
1 Block
Variable Pulse
Width
*9.76kHz: Color/1pass: