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13

LED Board

RELAY (BACK) Board

RELAY (FRONT) Board

CONTROL Board

POWER Board

POWER SW Board
(Power Switch)

DOUBLE FEED 
DETECTOR (R) Board

DOUBLE FEED 
DETECTOR (G) Board 

14

   Compared to the previous scanner KV-S2025C / S2045C / S2026C / S2046C Series, “Double-feed Detection 
    by Double Feed Detector (Ultrasonic Sensor)” is introduced to this product.  

ENDING SENSOR Board
(Ending Sensor)

STARTING POSITION
SENSOR Board
(Starting Position Sensor)

Door Switch

WAITING SENSOR Board
(Waiting Sensor)

Paper Detector

Double Feed Detector (G)

Double Feed Detector (R)

15

1. Scanning command is issued from PC, Paper detector checks whether documents exist on the Feed Tray.
2. Conveyor Motor is driven to rotate Drive Rollers.
3. Paper Feed Motor is driven to rotate Paper Feed Roller and Separation Roller.

Double-feed Prevention Roller (Retard Roller) is supported by a shaft fixed via torque limiter, and it is pressed
against the Separation Roller.
When documents enter into the separation section, the Double-feed Prevention Roller (Retard Roller) exerts
a manipulation force onto the document with the torque which has been already set.
This Manipulation force enables to separate the documents, and to feed a piece of document to scanning section.

4. When the leading edge of the document advances at about 10mm from the 1

st 

Drive Roller after passing through the

separation section and Waiting Sensor, the Paper Feed Motor stops and Paper Feed Roller and Separation Roller turn
together.

5. When the leading edge of the document passes through Starting Position Sensor, scanning the image starts after the defined

period. (Time to be required to conveyor the documents from the Starting Position Sensor to the scanning start point)

6. When the heeling edge of the document comes to about +5mm forward from the Double-feed Prevention Roller

(Retard Roller) whose length is equivalent to the distance between the Starting Position Sensor and the scanning
start point, the Paper Feed Motor is driven again to feed the 2

nd 

document. If the data size of a document is within

the amount of the memory in the scanner, the Paper Feed Motor is driven to feed the 2

nd

 document after finishing

the 1

st

 document scanning.

7. Repeat the sequence "3." to "6.".

16

C: Clean  R:Replace (x 1000 sheets)

• The maintenance schedule was determined according to paper standards (A4: 80 g/m

 / Letter: 20 lb.), which can

When cleaning rollers and CIS Sec. 7.2.1. mentions, the accessory Roller Cleaning Paper or KV-SS03 Option (Roller Cleaning
Paper) is needed.
Note

2. If the ADF Door does not open even with  ADF Door Release pushed repeatedly, there is a possibility that the door is

Paper Feed Roller

Sec.14.3

 C

 C

 C

Clean each part every 20 (x
1000) sheets'
scanning.

 

C

 

R

Separation  Roller

Sec.14.3

 

C

 

C

 

C

 

C

 

R

Double-feed Prevention Roller (Retard Roller)

Sec.14.1

 C

 C

 C

 C

 R

Drive Roller 1

Sec.14.2

 C

 C

 C

 C

 C

Drive Roller 2

Sec.14.2

 C

 C

 C

 C

 C

Drive Roller 3

Sec.14.2

 C

 C

 C

 C

 C

Exit  Roller

Sec.14.2

 

C

 

C

 

C

 

C

 

C

CIS

For front side Sec.14.3

 C

 C

 C

 C

 C

For back side Sec.14.2

 C

 C

 C

 C

 C

Sensor Roller

For front side Sec.14.2

 C

 C

 C

 C

 R

For back side Sec.14.3

 C

 C

 C

 C

 R

Paper Release Roller

Sec.14.1

 C

 C

 C

 C

 C

Free  Roller

Sec.14.3

 

C

 

C

 

C

 

C

 

C

Paper Detector (Sensor)

Sec.14.1

 C

 C

 C

 C

 C

Waiting Sensor (Board)

Sec.14.3

 C

 C

 C

 C

 C

Starting Position Sensor (Board)

Sec.14.3

 C

 C

 C

 C

 C

Ending Sensor (Board)

Sec.14.2

 C

 C

 C

 C

 C

Reflector (Mirror) Sheet for Waiting Position
Sensor

Sec.14.2

 

C

 

C

 

C

 

C

 

C

Reflector (Mirror) Sheet for Starting Position
Sensor

Sec.14.2

 

C

 

C

 

C

 

C

 

C

Reflector (Mirror) Sheet for Ending Sensor

Sec.14.1

 C

 C

 C

 C

 C

Double Feed Detector (G)  (Board)

Sec.14.2

 C

 C

 C

 C

 C

Double Feed Detector (R)  (Board)

Sec.14.3

 C

 C

 C

 C

 C