The HEAT ENABLE signals control the ejection of small and large ink droplets as
follows:
For each color, (Y, M and C), HENB B and A signals drive the front and back nozzle
heaters respectively. For black, HENB C and D signals drive the front and back
nozzle heaters respectively.
The HEAT ENABLE signal consists of the pre-pulse and the main pulse that optimize
ink ejection by constantly monitoring the head rank, the printer inner temperature
and head temperature. The ink is ejected by varying the HEAT ENABLE pulse
width.
Part 4: Technical Reference
BJC-50
4-6
HLATCH
0
1
2
3
4
128 or 136
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 A, B, C, D
Odd ENB
Even ENB
B ENB 0
B ENB 1
B ENB 2
H ENB A, B, C, D
Data transmission to shift resistor
Head Drive in HQ Mode (Divided into 16)
Head Drive in HS Mode (Divided into 8)
164
µ
s (6.43kHz)
164
µ
s (6.43kHz*)
92
µ
s (7.82kHz)
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
1 Block
When using a black BJ cartridge, HENEB A and D are drive signals. When using the color BJ
cartridge, HENEB A and B drive yellow, magenta and cyan, and HENEB C and D drive black.
Odd ENB
Even ENB
B ENB 0
B ENB 1
B ENB 2
H ENB A, D
H ENB B, C
1 Block
Head Drive in 720dpi (Divided into 8)
Large and small dot printing
Figure 4-4 Print Signals
Содержание BJC-55 Series
Страница 1: ...BJC 55 SERVICE MANUAL Canon...
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Страница 50: ......
Страница 72: ...2 4 Character Code Tables Code page 437 Code page 850 Part 2 Product Specifications BJC 50 2 22...
Страница 73: ...Code page 860 Code page 863 2 23 BJC 50 Part 2 Product Specifications...
Страница 74: ...Code page 865 Code page 857 Part 2 Product Specifications BJC 50 2 24...
Страница 75: ...Code page 855 Code page 852 2 25 BJC 50 Part 2 Product Specifications...
Страница 76: ...Code page 864 Code page 869 Part 2 Product Specifications BJC 50 2 26...
Страница 78: ......
Страница 96: ...3 4 1 Demonstration print Part 3 Operating Instructions BJC 50 3 18 Figure 3 13 Demonstration Print Sample...
Страница 103: ...3 6 4 EEPROM settings list print 3 25 BJC 50 Part 3 Operating Instructions Figure 3 20 EEPROM Settings List Print Sample...
Страница 106: ...Part 3 Operating Instructions BJC 50 3 28 This page intentionally left blank...
Страница 108: ......
Страница 160: ......
Страница 164: ...4 ADJUSTMENT No parts need to be adjusted Part 5 Maintenance BJC 50 5 4...
Страница 198: ...7 CIRCUIT DIAGRAMS 7 1 Parts Layout 7 1 1 Control board Upper section Part 5 Maintenance BJC 50 5 38...
Страница 199: ...7 1 2 Control board Lower section 5 39 BJC 50 Part 5 Maintenance...
Страница 200: ...Part 5 Maintenance BJC 50 5 40 This page intentionally left blank...
Страница 206: ...PRINTED IN JAPAN IMPRIME AU JAPON CANON INC The printing paper contains 70 waste paper...