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There is shown and described a print carrier mounted device for shingli the uppermost sheets in a stack of such sheets using the inertia of normal force applying means for lifting the separator.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
98% of the total text.
Page 1 of 2
Inertial Roll Wave Separator
There is shown and described a print carrier mounted device for shingli the
uppermost sheets in a stack of such sheets using the inertia of normal force
applying means for lifting the separator.
In Fig. 1, the separator, generally indicated 10, is shown during feed stroke.
pivot shaft 12 is fixed to the print mechanism carrier of the printer. pivot shaft 12
does not rotate. Mass member 14 is slidingly mounted on rail 16. When at rest
against stop 18, it provides the normal load for crown roller 20. Roller 20, moving
in the direction of arrow 22, generates a roll wave in stack 8.
As the printer carrier completes a line and reverses direction, the rapid
deceleration/acceleration of the turn-around causes mass member 14 to slide on
rail 16 to the position shown in Fig. 2. The shift in the weight of mass 14 allows
separator 10 to pivot clockwise about shaft 12, thereby lifting roller 20 from page
stack 8 and bringing stop 13 into contact with an arm-like extension of pivot shaft 12. When the carrier reaches the other margin and performs another turn-
around, mass 14 slides leftwardly and returns to the position shown in Fig. 1.
Alternatively, the structure could be mounted to a separately driven
leadscrew or drive means as a separate entity such that it could drive paper in
any direction. Also, mass member 14 could be a ball in a race, or cantilevered
on a pendulum arm pivoted about shaft 12.