Read Panasonic KV-S2048C Service Manual online
15
6 MECHANICAL FUNCTION
6.1.
Feed Mechanism
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.
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.
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.
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
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.".
Note
When the scanner’s buffer becomes full, the scanner stops to prevent buffer overflow, while allowing the data
to be transferred to the PC continuously. When enough free buffer area is secured again, the scanner
resumes the scanning process.
to be transferred to the PC continuously. When enough free buffer area is secured again, the scanner
resumes the scanning process.
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