Sheet feeding or delivering – Feeding – Separators
Patent
1993-02-25
1994-09-06
Olszewski, Robert P.
Sheet feeding or delivering
Feeding
Separators
271 98, 271104, 271105, 271164, 271171, B65H 312
Patent
active
053441338
ABSTRACT:
Apparatus for feeding sheets seriatim from a sheet supply stack. The apparatus comprises a sheet feed head assembly including a plenum, a vacuum source in flow communication with the plenum, and a mechanism, such as a feed belt, for example, associated with the plenum for urging a sheet acquired by vacuum in a sheet feeding direction away from the sheet supply stack. The sheet supply stack is supported, for example in a hopper on a support platform, so as to maintain the topmost sheet in such stack at a predetermined level in spaced relation with respect to the urging mechanism of the sheet feed head assembly. A first positive air supply directs a flow of air at the sheet supply stack to levitate the top several sheets in the supply stack to an elevation enabling the topmost sheet to be acquired by vacuum from the sheet feed head assembly plenum; and a second positive air supply directs a flow of air at an acquired sheet to assure separation of any additional sheets adhering to such topmost sheet.
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Dobbertin Michael T.
Jantsch Gregory R.
Mitchell, Jr. Henry P.
Mortellaro Larry J.
Shifley James D.
Eastman Kodak Company
Kessler Lawrence P.
Milef Boris
Olszewski Robert P.
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