3-7
Confidential
(1) ADF scanning: Document moves across stationary CIS unit
(MFC620CN/425CN/420CN/DCP120C and FAX2440C only)
Placing a document
face down
in the document tray activates the document front sensor, switching
to ADF scanning.
The CIS drive mechanism (details below) operates for each scanning command executed. The CIS
unit first moves to the white-level reference film for white level compensation and then to the ADF
scanning position.
The ADF motor then rotates the document pull-in roller to pull the document into the ADF. This
new roller has become necessary because this machine has a horizontal document path. The
document separation roller feeds the pages one at a time,
starting from the bottom,
to the document
feed roller, which rotates to move the page in a curve left, up, and right. The page is scanned as it
passes over the CIS unit. It then leaves the machine
face up
onto the document eject support. The
machine inserts subsequent pages under this one to preserve the document page order.
(2) Flat-bed scanning: CIS unit moves under stationary document
The user lifts the document cover, places a page (or open book)
face down
on the glass plate, and
closes the document cover.
The CIS drive mechanism (details below) operates for each scanning command executed. The CIS
unit first moves to the white-level reference film for white level compensation. It then moves right,
scanning as it goes. It returns to its home position after the scan.
CIS drive mechanism
The contact image sensor (CIS) unit rides along the CIS rail driven by the CIS drive belt.
Clockwise motion of the CIS motor moves the unit to the left; counterclockwise motion, to the
right. This unit consists of the document illumination LED array, the lens array gathering the light
reflected from the scanned image, and the CIS PCB converting the light input to pixel data output .
Summary of Contents for DCP-110C
Page 10: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Page 14: ...1 3 Confidential 1 2 CONTROL PANEL MFC620CN FAX2440C ...
Page 17: ...1 6 Confidential MFC210C ...
Page 21: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 87: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 131: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Page 136: ...Confidential CHAPTER 55 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 212: ...5 74 Confidential Routing C Backup battery harness and ink supply tubes MFC620CN and FAX2440C ...
Page 214: ...5 76 Confidential Viewed from the left ...
Page 220: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 240: ...6 18 Confidential Vertical Alignment Check Patterns ...
Page 243: ...6 21 Confidential Margin Check Pattern ...
Page 253: ...Confidential CHAPTER 7 CLEANING ...
Page 256: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Page 267: ...8 9 Confidential Scanning Compensation Data List a b c d e f i ...
Page 274: ...8 16 Confidential Configuration List ...
Page 294: ...8 36 Confidential 1st sheet 2nd sheet Vertical Alignment Check Patterns ...
Page 297: ...8 39 Confidential Margin Check Pattern ...
Page 311: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
Page 362: ...App 1 2 Confidential 2 Head property label Property label for the head carriage unit Location ...
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Page 466: ...Confidential February 05 SM FAX028 8CA811 8 Printed in Japan ...