# US 5,704,606 A · Sheet feeding apparatus for a printer

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- Number: US 5,704,606 A
- Document ID: US5704606A
- Status: Granted
- Kind: A
- Application number: 08/734,416
- Filed: 1996-10-17
- Granted: 1998-01-06
- Earliest claimed: 1995-10-17
- Assignees: Samsung Electronics Co., Ltd.
- Inventors: An-Kuk Kim
- Web page: https://patentgrep.com/patent/US5704606A

## CPC

- B65H 3/0669: {Driving devices therefor}
- B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES

## Abstract

A sheet feeding apparatus for use in a printer is disclosed. The apparatus according to a preferred embodiment of the present invention includes a pick-up gear coaxially linked with a pick-up roller for picking up a sheet; a feed gear coaxially linked with a feed roller for transmitting a picked-up sheet to a location for printing; a driving gear in substantially rectangular shape, driven by a driving force applied from a motor; a change gear engaged with the driving gear and slidingly movable along the peripheral surface thereof, for transferring a driving force applied from the driving gear to one of either the pick-up gear or feed gear; a switching lever pivotly mounted on a shaft connected to the body of the printer, said level being swiveled with respect to the shaft when a carriage pushes an arm thereof, and for causing the change gear to be released from an engagement with the feed gear and to be meshed with the pick-up gear; a guide bar fixedly installed on the body of the printer, for guiding in the axial direction the change gear to slidingly move along the peripheral surface of the driving gear; and an elastic member elastically installed around the guide bar to shift the change gear from an engagement with the pick-up gear to an engagement with the feed gear, whereby the driving force produced from the mother is able to be transferred to the feed roller.

## Claims

### Claim 1

A sheet feeding apparatus for use in a printer, said apparatus comprising:
a pick-up gear coaxially linked with a pick-up roller for picking up a sheet;
a feed gear coaxially linked with a feed roller for transmitting a picked-up sheet to a location for printing;
a driving gear in substantially rectangular shape, driven by a driving force applied from a motor;
a change gear engaged with the driving gear and slidingly movable along the peripheral surface thereof, for transferring a driving force applied from the driving gear to one of either the pick-up gear or feed gear;
a switching lever pivotly mounted on a shaft connected to the body of the printer, said lever being swiveled with respect to the shaft when a carriage pushes an arm thereof, and for causing the change gear to be released from an engagement with the feed gear and to be meshed with the pick-up gear;
a guide bar fixedly installed on the body of the printer, for guiding in the axial direction the change gear to slidingly move along the peripheral surface of the driving gear; and
an elastic member elastically installed around the guide bar to shift the change gear from an engagement with the pick-up gear to an engagement with the feed gear, whereby the driving force produced from the motor is able to be transferred to the feed roller.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein a stopper is protrudently formed on the body of the printer so as to support a portion of the switching level and prohibit an excessive rotational movement thereof and to prevent the change gear from being deviated, from an engagement with the feed gear by a restoring force of the elastic member.