Sheet feeding or delivering – Feeding – Separators
Patent
1990-08-20
1991-12-17
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Separators
271265, 271118, 271245, 271273, B65H 708
Patent
active
050729233
ABSTRACT:
A method and apparatus for document feeding for improved operator document manual insertion in which a document may be manually initially inserted into a document input area and released. The document is sensed in the document input area by a document sensor, and then automatically clamped in a document feeding nip which is automatically actuated in response to the document sensing, and then the document is automatically fed. Here, a first time delay period is provided between the sensing of the manually inserted document and the automatic clamping of the document. A second time delay is provided between the automatic clamping and the automatic feeding of the document. Preferably the automatic clamping of the document in the feeding nip is with a limited initial nip force sufficiently low to allow manual document retraction without document damage during the second time delay period. Furthermore, preferably the document sensing automatically actuates an operator display, but here a substantial present time delay is provided between the sensing of the manually inserted document by the document sensor and the automatic actuation of the operator display.
REFERENCES:
patent: 3981493 (1976-09-01), Klappenecker et al.
patent: 4132401 (1979-01-01), Gauronski et al.
patent: 4548401 (1985-10-01), Nishikawa
patent: 4561644 (1985-12-01), Clausing
patent: 4568075 (1986-02-01), Bothner
patent: 4728966 (1988-03-01), Piatt et al.
Druzbick Carol Lynn
Skaggs H. Grant
Xerox Corporation
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