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Chapter 2
2-17
2.3.2.4 Printhead
2.3.2.4.1 Structure of Printhead
0013-4821
A printhead incorporates six nozzle arrays. Each nozzle can be controlled individually so that a six-color discharge action can be performed by a single printhead.
a) Nozzle arrays
A total of 2560 nozzles are arranged in a two-column staggered pattern.
In each column, 1280 nozzles are arranged in a staggered pattern at intervals of 600 dpi, forming a 2560-nozzle arranged at intervals of 1200 dpi.
F-2-14
b) Nozzle structure
Ink supplied from the ink tank is filtered by a mesh ink filter, and the supplied to the nozzles.
Ink is supplied from the shared ink chamber to the nozzles. When the head driving current is applied to the nozzle heater, ink boils and form bubbles so that ink
droplets are discharged from the nozzles.
F-2-15
0
2
1
3
2559
2557
2558
2556
0
2
1
3
2559
2557
2558
2556
0
2
1
3
2559
2557
2558
2556
0
2
1
3
2559
2557
2558
2556
0
2
1
3
2559
2557
2558
2556
0
2
1
3
2559
2557
2558
2556
5/600inch
1/1200inch
82/600inch
Resin
Sillicon plate
Heater
Shared ink chamber
Heater
Summary of Contents for image Prograf iPF780 Series
Page 1: ...Mar 27 2014 Service Manual iPF780 760 750 series iPF785...
Page 9: ...Chapter 1 PRODUCT DESCRIPTION...
Page 57: ...Chapter 2 TECHNICAL REFERENCE...
Page 117: ...Chapter 3 INSTALLATION...
Page 125: ...Chapter 4 DISASSEMBLY REASSEMBLY...
Page 175: ...Chapter 4 4 49 2 Shaft Cleaner 1 F 4 97 1 1...
Page 176: ...Chapter 4 4 50 3 Upper Cover Hinge Catch 1 Roll Cover Slide Guide 2 F 4 98 2 1...
Page 179: ...Chapter 5 MAINTENANCE...
Page 186: ...Chapter 6 TROUBLESHOOTING...
Page 212: ...Chapter 7 SERVICE MODE...
Page 267: ...Mar 19 2014 PARTS CATALOG iPF786 785 781 780 765 760 755 750...
Page 301: ...2 25 FIGURE 10 PLATEN GUIDE UNIT 1 3 6 2 8 4 5 10 10 10 9 9 11...
Page 326: ......