Toshiba 453 User Manual

Page of 302
9 - 6
9
e-STUDIO350/352/353/450/452/453
PAPER FEEDING SYSTEM
© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved
9.2.3 Separation of paper
The  separation  roller  in  this  equipment  works  to
separate the sheets of paper being fed. The sep-
aration  roller  section  consists  of  the  feed  roller,
separation roller, spring joint, etc. The feed roller
rotates in the direction of the white arrow (shown
below in the figure at right) at the same timing as
the pickup roller rotation when the feed clutch is
turned ON.
When two sheets of paper are transported (shown
above  in  the  figure  at  right),  the  lower  sheet  is
braked by the separation roller and not transport-
ed any further and the upper sheet is transported
in the direction of black arrow since the frictional
force between two sheets is small.
(Example)
When  only  one  sheet  enters  into  the  separation
roller section:
Since  the  transporting  force  of  the  feed  roller  is
greater  than  the  braking  force  of  the  separation
roller,  these  two  rollers  rotate  together  to  trans-
port the sheet to the registration roller.
When two sheets enter into the separation roller
section:
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 sheet A is transported in the direction
of the black arrow and the sheet B is braked by
the  separation  roller  and  is  not  transported  any
further.
Fig. 9-203
Fig. 9-204
Feed roller
Spring joint
Separation roller
Feed roller
Separation roller