Method and device for feeding sheets to a user machine

Details Method and device for feeding sheets to a user machine Method and device for feeding sheets to a user machine

2007-02-14

2009-06-30

Mackey, Patrick H (Department: 3653)

Sheet feeding or delivering

Feeding

Pack holders

C271S149000, C271S150000, C271S152000

Reexamination Certificate

active

07552921

ABSTRACT:
A method and device for feeding sheets to a user machine, whereby the sheets, arranged in a stack along a channel having a substantially horizontal longitudinal axis, are fed to a single-sheet pickup member by dividing the stack into an output portion, an intermediate portion, and an input portion; pushing the output portion towards the pickup member at a given constant first pressure; compressing the input portion at a given second pressure; transferring sheets from the intermediate portion to the output portion to compensate for the withdrawn sheets and keep a length of the output portion substantially constant and equal to a given value; and transferring sheets from the input portion to the intermediate portion to keep the density of the sheets along the intermediate portion substantially constant and equal to a given value.

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Search Report issued by European Patent Office on May 22, 2007, in connection with corresponding European Patent Application 07 10 2191.

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