Cassette Feeding Operation - Toshiba e-STUDIO 160 Service Manual

9.4.4 Cassette feeding operation

[A] From power-on to the ready state
(1) When the power is turned ON, the tray-up motor of the tray-up assembly turns ON to lift the paper tray
of the paper cassette.
(2) When the paper tray pushes up the pickup roller to turn ON (L → H) the pickup sensor, the tray-up
motor turns OFF. At this time, the presence or absence of paper is detected by the paper empty
sensor.
(3) Even if the power is turned ON while the paper cassette is not mounted, the tray-up motor will not turn
ON.
[B] Ready state
(1) When the paper tray of the paper cassette ascends and the presence or absence of paper is de-
tected, the standby mode will be activated.
(2) When the paper cassette is removed while in the standby mode, the tray lift shaft is dislocated from
the tray-up assembly, thereby causing the tray to descend. When the paper cassette is mounted
again, the tray ascends causing the presence or absence of paper to be detected.
[C] Paper feeding
(1) When the pickup clutch is turned ON, the power of the main motor is transmitted to the pickup feed
roller through each gear for rotation.
(2) The rotation of the pickup feed roller is transmitted to the pickup roller through the belt.
(3) The paper is transported from the paper cassette by means of the pickup roller and pickup feed roller.
(4) A fixed time after the feed sensor detects the top of paper, the registration roller clutch is turned ON.
(5) When the registration roller clutch is turned ON, the power of the main motor is transmitted to the
registration roller through each gear for rotation.
(6) The paper is transported by means of the registration roller and pinch roller. Even if the paper has
been transported askew, the paper is pressed to the registration roller during the time from the mo-
ment when the feed sensor turns ON to the moment when the registration roller clutch is turned ON
to make the paper sag, thereby correcting it to be horizontal.
e-STUDIO160/200/250 PAPER FEEDING SYSTEM 9 - 6 December 2002 TOSHIBA TEC