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November 2003 © TOSHIBA TEC 10 - 1 e-STUDIO3511/4511 PAPER FEEDING SYSTEM
10
10. PAPER FEEDING SYSTEM
10.1 General Descriptions
This chapter explains how the system works to pick up paper from the drawer or bypass tray and transport
it to the transfer unit.
The paper feeding system mainly consists of the pickup roller, feed roller, separation roller, transport
roller, registration roller, bypass paper sensor, empty sensor, paper stock sensor, feed sensor, registration
sensor and drive system for these components. The transport motor drives the above rollers and sensors.
Refer to chapter 9 for more details about the transport motor and its drive system.
(1) Pickup roller (Drawers and bypass feed)
This roller moves up and down and draws out the paper from the bypass tray or drawer and transport
it to the feed roller.
(2) Feed roller (Drawers and bypass feed)
This roller is placed against the separation roller. It transports the paper from the pickup roller to the
transport roller.
(3) Separation roller (Drawers and bypass feed)
This roller is placed against the feed roller. When two sheets of paper or more are transported from
the pickup roller, the load of the torque limiter of the separation roller is heavier than the frictional
force between the sheets. As the result, the separation roller is stopped and the lower paper is not
advanced any further. When only one sheet is transported from the pickup roller, the separation
roller rotates following the feed roller.
(4) Transport roller (Drawers and bypass feed)
This roller transports the paper sent from the feed roller to the registration roller.
(5) Registration roller
Paper transported from the transport roller is pushed against the registration roller which aligns the
leading edge of the paper.
Then, the registration rollers rotate to transport the paper to the transfer unit.