General Operation - Toshiba e-STUDIO281c Service Manual

[Example]
When only one sheet enters between the rollers: Since the transporting force of the feed roller is
greater than the braking force of the separation roller, the separation roller follows the feed roller, mak-
ing the sheet go forward to the registration roller.
When two sheets enter between the rollers at the same time:
Since the transporting force of the feed roller and the breaking force of the separation roller are greater
than the frictional force between two sheets, the paper A is transported to the direction of the black
arrow and the paper B is braked by the separation roller and is not transported any further.
10.4.5

General operation

[A] From power-ON to ready status
1) When the equipment is turned ON, the tray-up motor (M10) is activated and the upper drawer tray
starts to rise. When the tray-up sensor (S27) is turned ON (L→H), the tray-up motor (M10) is turned
OFF, and the tray is stopped. At this time, if the empty sensor (S29) is OFF (L), it is judged that there
is no paper in the drawer.
If the empty sensor (S29) is ON (H), there is paper in the drawer. The tray stops at raised position
regardless of availability of paper. The tray-up motor (M10) then starts to rotate in reverse and the
lower drawer is raised. The lower drawer is stopped in the same manner as the upper drawer, and
the empty sensor (S30) detects if there is any paper in the drawer.
2) If the drawer is not completely inserted when the equipment is turned ON, the tray for that drawer is
not raised. When the drawer is inserted completely, the tray is raised and checks the availability of
the paper.
3) If either of the sensors on the transport path is ON (means there is paper on the transport path)
when the equipment is turned ON, it is determined that a paper jam has occurred and no operation
is enabled until the paper is removed.
[B] Ready status
1) After the tray is moved up and availability of paper is checked as described above, the equipment
enters the ready status.
At ready status, the tray remains at raised position.
2) When a drawer is inserted or removed at ready status, the tray is raised again to check the availabil-
ity of paper.
e-STUDIO281c/351c/451c PAPER FEEDING SYSTEM
Feed roller
Separation roller
Fig.10-5
10 - 6
June 2005 © TOSHIBA TEC