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Confidential
[ 2 ] Features
A distinct feature of this machine is the use of ink supply tubes between the ink cartridges and the
head/carriage unit. Relieving the head/carriage unit of the task of carrying heavy ink cartridges back
and forth across the page, the approach generally adopted by other ink-jet printers, offers the
following advantages.
- Smaller unit size--lower height, in particular
- Lower power consumption
- Lower noise levels
- Lower vibration
During print operation, the ink-jet mechanism inside the head/carriage unit sprays ink droplets from
the head nozzles. The loss of this ink from the head produces a negative pressure that replenishes
the head with ink from the ink tank through the supply tubes.
Note, however, that the above ink flow is only possible when the ink supply tubes are full of ink.
The factory therefore primes the ink supply path by applying strong suction to the head nozzles with
the maintenance unit to suck both air and ink through the ink supply tubes.
Leaving too long interval between this priming and actual use, however, risks air bubbles, increased
viscosity, and other quality issues with the ink in the supply tubes. Before using this machine for the
first time, therefore, this machine automatically replaces the ink supply path contents with fresh ink
using an initial purge, a repeat of this priming operation.
When the machine is on standby, a constant negative pressure (which is produced according to the
difference in height between the head/carriage unit and ink cartridges) is applied to the rear of the
print head, thus preventing ink from leading out of those nozzles.
NOTE:
The above applies only as long as this machine rests on a horizontal surface. Standing this
machine on end or even just tilting it backwards with the print head uncapped risks overcoming this
slight negative pressure preventing ink leakage from the head nozzles.
Piezoelectric ceramic actuators inside the print head convert this ink to droplets sprayed onto the
paper. For further details, see "
" below.
Содержание MFC 685CW - Color Inkjet - All-in-One
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Страница 11: ...ix Confidential Legal limitations for copying ...
Страница 12: ...Confidential CHAPTER 1 PARTS NAMES AND FUNCTIONS ...
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Страница 22: ...1 9 Confidential MFC465CN For keys exclusive to the European models see page 1 11 9 8 7 6 1 2 3 4 5 ...
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Страница 30: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Страница 50: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Страница 99: ...Confidential CHAPTER 4 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 152: ...Confidential CHAPTER 5 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Страница 156: ...5 3 Confidential Cover page sample End page sample ...
Страница 157: ...Confidential CHAPTER 6 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 250: ...Confidential CHAPTER 7 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 263: ...7 11 Confidential Head Positioning Test Pattern ...
Страница 267: ...7 15 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Страница 268: ...7 16 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Страница 270: ...7 18 Confidential Vertical Alignment Check Patterns 600DPI 1200DPI ...
Страница 273: ...7 21 Confidential Margin Check Pattern ...
Страница 288: ...Confidential CHAPTER 8 CLEANING ...
Страница 292: ...Confidential CHAPTER 9 MAINTENANCE MODE ...
Страница 300: ...9 6 Confidential Scanning Compensation Data List a b c d e f i ...
Страница 303: ...9 9 Confidential Test Pattern ...
Страница 308: ...9 14 Confidential Configuration List ...
Страница 315: ...9 21 Confidential Cover page sample End page sample ...
Страница 320: ...9 26 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Страница 321: ...9 27 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Страница 326: ...9 32 Confidential Vertical Alignment Check Patterns 600DPI 1200DPI ...
Страница 329: ...9 35 Confidential Margin Check Pattern ...
Страница 448: ...Confidential B Power supply PCB U S A and Canadian models ...
Страница 449: ...Confidential B Power supply PCB European Asian and Oceanian models ...
Страница 453: ...Confidential May 07 SM FAX067 8CAE03 1 Printed in Japan ...