Sheet feeding or delivering – Feeding – Separators
Reexamination Certificate
2002-07-10
2004-04-13
Walsh, Donald P. (Department: 3653)
Sheet feeding or delivering
Feeding
Separators
C271S114000, C271S010130, C192S04100R, C192S08100C
Reexamination Certificate
active
06719284
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a document feeding apparatus used in an office machine, and more specifically relates to a document feeding apparatus having simple mechanism and separating a feed-in document from a next feed-in document within a fixed distance.
BACKGROUND OF THE INVENTION
Generally, a document feeding apparatus is used in an office machine, such as a fax machine, a scanner, a printer, a copy machine, or a multi-function peripheral (MFP), to convey the document into the office machine. No matter the document feeding apparatus is applied to which kind of office machine, the document feeding apparatus should convey the documents one by one and prevent the documents from overlapping with each other. Moreover, when the document feeding apparatus conveys a document, the document should proceed straightforward so as to get a better quality.
Due to the automatic document feeder (ADF) applying to the multi-function peripheral, the ADF is better to avoid the complex design and high cost in manufacturing. Conventionally, to avoid any documents overlapping, the conventional ADF typically uses a separation roller (not shown) to separate documents. However, the conventional ADF still has a disadvantage in easily causing the double feed and/or jam due to the insufficient separation of documents.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide an automatic document feeding apparatus that is used in an office machine, such as a fax machine, a scanner, a printer, a copy machine, or a multi-function peripheral (MFP).
Another object of the present invention is to provide an automatic document feeding apparatus that conveys documents one by one without concerns of overlapping feeding of documents.
The present invention includes an intermittent gear set, a first roller, a second roller, and a driving device. The intermittent gear set includes a gear, a shaft, a one-way spring clutch, an arcuate groove, and a pin. The driving device provides the gear and the second roller a power to rotate. The intermittent gear set selectively drives the first roller to pick up the document. The pin is selectively movable in the arcuate groove so that the first roller selectively picks up the document resulting in separation of a document from next feed-in document to prevent a document from papers jamming.
Other features, benefits and advantages of the invention will be apparent from the following detailed description of preferred embodiments taken in conjunction with the accompanying drawing figures.
REFERENCES:
patent: 4844638 (1989-07-01), Kagami et al.
patent: 5116038 (1992-05-01), Kim
patent: 5630580 (1997-05-01), Tsao et al.
Hsiao Sidney
Huang Clark
Liu Jackly
Liu Julian
Kohner Matthew J.
Lite-On Technology Corporation
Rosenberg , Klein & Lee
Walsh Donald P.
LandOfFree
Document feeding apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Document feeding apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Document feeding apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3247039