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3-42
Confidential
Movable platen*
*Only for models with movable platen
The movable platen has movable ribs that move in synchronization with the leading or trailing edge
of advancing paper. It realizes the following.
- Increased printing speed in borderless printing
- Eliminating paper deflection that could occur in printing on the trailing edge of paper
Synchronization with leading edge of paper
When the leading edge of the paper reaches the movable rib drive position, the head/carriage unit
moves to the left end of its travel and pushes the upper end of the movable platen lever, releasing
its lower end that blocks the rotation of the movable platen cam gear. This triggers driving the
movable platen mechanism.
The mechanism transmits the paper feed motor rotation to the movable ribs. They move from the
home position (center) to the upstream limit of the movable range to wait for the leading edge of the
paper to come. They move in synchronization with the leading edge of the paper advancing. When
they reach the downstream limit, they return to the home position. This is a sequence of the
movable rib operation.
Synchronization with trailing edge of paper
When the registration sensor detects the trailing edge of the paper, the motor further feeds the paper
for the predetermined amount. After that, the head/carriage unit pushes the upper end of movable
platen lever again. Just as for the leading edge of paper, the movable ribs move to the upstream
limit of the movable range to wait for the trailing edge of the paper advancing to come and then
move in synchronization with the trailing edge. When the movable ribs have reached the downstream
limit and the printing operation has completed, they return to the home position.
(Front)
(3_17_e)
Head/carriage unit
CR guide rail
Paper feed roller
Movable platen
Movable platen lever
Movable ribs
Home position
(Center)
Upstream limit
Downstream limit
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 ...