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US 6,026,723 AGranted
Roll paper feeding apparatus
AssigneeSharp Kabushiki Kaisha
InventorKatsuyuki Sakai
Life of this patent
Estimating the term…
Abstract
An inventive apparatus for feeding rolled paper comprises rolled paper, a feed roller for feeding the rolled paper, a cutting unit for cutting the rolled paper, a driving source for actuating the feed roller and the cutting unit, a first gear train interposed between the driving source and the feed roller and a second gear train interposed between the driving source and the cutting unit. A reverse feed gear for transmitting driving force for a cutter gear to a feed gear is interposed between the first gear train and the second gear train and connects the first gear train with the second gear train when a movable cutter moves from a cutting position to a non-cutting position. Thereby, the feed roller is rotatively driven in the direction opposite to the feed direction by the driving force from the cutter gear.
Claims9
An apparatus for feeding rolled paper comprising:
- rolled paper;
- a feed mechanism for feeding a portion of the rolled paper in a predetermined direction;
- a cutting unit for cutting the portion of the rolled paper into a sheet of desired length;
- a driving source for actuating the feed mechanism and the cutting unit;
- a first gear train interposed between the driving source and the feed mechanism;
- and a second gear train interposed between the driving source and the cutting unit,
- wherein the first gear train includes a feed gear for driving the feed mechanism;
- wherein the second gear train includes a cutter gear for moving a movable cutter of the cutting unit between a non-cutting position and a cutting position;
- and
- a reverse feed gear comprising an integral part of the cutter gear for transmitting driving force for the cutter gear to the feed gear interposed between the first gear train and the second gear train;
- the apparatus being operable such that when the portion of the rolled paper is to be fed, the second gear train is held in a non driving connection state and the first gear train is held in a driving connection state, thereby transmitting the driving force from the driving source to the feed mechanism via the first gear train and rotatively driving the feed mechanism in the predetermined direction;
- when the portion of the rolled paper is to be cut, the second gear train is held in a driving connection state and the first gear train is held in a non driving connection state, thereby transmitting the driving force from the driving source to the movable cutter via the second gear train and moving the movable cutter from the non-cutting position to the cutting position and then from the cutting position to the non-cutting position;
- and
- when the movable cutter moves from the cutting position to the non-cutting position, the reverse feed gear connects the first gear train with the second gear train, thereby transmitting the driving force for the cutter gear to the feed gear via the reverse feed gear and rotatively driving the feed mechanism in a direction opposite to the predetermined direction.
11 more elements
An apparatus for feeding rolled paper comprising:
- a feed mechanism for feeding an outer end portion of rolled paper in a predetermined direction;
- a cutting unit for cutting said outer end portion of the rolled paper into a sheet of desired length;
- a driving source for actuating the feed mechanism and the cutting unit;
- a first gear train interposed between the driving source and the feed mechanism;
- and a second gear train interposed between the driving source and the cutting unit,
- wherein the first gear train includes a feed gear for driving the feed mechanism;
- the second gear train includes a cutter gear for moving a movable cutter of the cutting unit between a non-cutting position and a cutting position;
- a reverse feed gear for transmitting driving force for the cutter gear to the feed gear is interposed between the first gear train and the second gear train and wherein the reverse feed gear is driven in a body with the cutter gear, a part of which includes a tooth portion which is drivingly connected with the first gear train;
- when said outer end portion of the rolled paper is to be fed, the second gear train is held in a non driving connection state and the first gear train is held in a driving connection state, thereby transmitting the driving force from the driving source to the feed mechanism via the first gear train and rotatively driving the feed mechanism in the predetermined direction;
- when said outer end portion of the rolled paper is to be cut, the second gear train is held in a driving connection state and the first gear train is held in a non driving connection state, thereby transmitting the driving force from the driving source to the movable cutter via the second gear train and moving the movable cutter from the non-cutting position to the cutting position and then from the cutting position to the non-cutting position;
- and
- when the movable cutter moves from the cutting position to the non-cutting position, the reverse feed gear connects the first gear train with the second gear train by means of said tooth portion, thereby transmitting the driving force for the cutter gear to the feed gear via the tooth portion and rotatively driving the feed mechanism in a direction opposite to the predetermined direction while the tooth portion of the reverse feed gear is connected with the first gear train, thereby preventing a tip end of the outer end portion of the rolled paper from abutting the movable cutter.
9 more elements
Dependencies are inferred from the claim text.