PAPER-BLOCKING ASSEMBLY AND PAPER PROCESSING DEVICE USING THE SAME
This invention provides a paper-blocking mechanism and paper processing device using the same. The paper-blocking mechanism comprises a paper holder, a shaft connecting to a power source and driving a paper feeding portion, a restriction portion disposed on the shaft and moving between a first position and second position when the shaft is rotating, a paper blocking portion comprising a paper blocking plate and coupled to the paper processing device, wherein the restriction portion abuts the paper blocking plate to cause the paper holder in a paper blocking position when the restriction portion is in the first position, and the restriction portion doesn't abut the paper blocking plate to cause the paper holder in a paper feeding position when the restriction portion is in the second position.
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This application claims the benefit of Taiwan application Serial No. 98110550, filed Mar. 30, 2009, the subject matter of which is incorporated herein by reference.
BACKGROUND OF THE INVENTION1. Field of the Invention
The present invention relates generally to automatic document feeder in paper processing device, and, more particularly, to paper-blocking mechanism in paper processing device.
2. Description of the Related Art
Currently, scanner, printer, and multi-function paper processing device are adopted automatic document feed as their basic configuration. Automatic document feed mechanism is usually adopted paper blocking mechanism to position the paper, and paper stopps at the appropriate position based on paper blocking mechanism. Thus, when feeding paper, it will not result in taking more than one sheets of paper at one time (multi feed) or will not get paper (miss feed).
The prior art, U.S. Pat. No. 6,893,013 provides a media blocking apparatus, including media block 50 and block lever 52. Block lever 52, including cam 80 driving by feed roll shaft 42, is used for moving said media block 50 between blocking and retracted positions upon rotation of the feed roll shaft 42. Cam 80 intermittently moves to achieve barricade 54 to leave paper path when feeding. Specifically, it should be configurated at least two power source for feeding and blocking paper. The system uses additional components, i.e. block lever 52, make the system complicated and the cost of the system increases.
SUMMARY OF THE INVENTIONThe present invention provides paper-blocking assembly and paper processing device using thereof. The paper-blocking assembly includes a paper holder, a paper blocking portion, a shaft and a restriction portion. The paper holds paper. The shaft derived by a power source, when the shaft rotates, the restriction portion moves between a first position and a second position and a paper feeding portion of the paper processing device feeds the paper. The paper blocking portion is rotatorily coupled to the paper processing device. The restriction portion abuts the paper blocking plate to cause the paper holder in a paper blocking position when the restriction portion is in the first position, and the restriction portion is away from the paper blocking plate to cause the paper holder in a paper feeding position when the restriction portion is in the second position and the paper feeding portion feeds the paper.
The invention will become apparent from the following detailed description of the preferred but non-limiting embodiments. The following description is made with reference to the accompanying drawings.
The position of restriction portion 51 illustrated in
The position of restriction portion 51 illustrated in
Paper blocking portion 30 includes a paper blocking plate 31, a weight portion 33 and a pivot 32. Pivot 32 disposed between weight portion 33 and the paper blocking plate 31 such that paper blocking plate 31 can pivot freely on pivots 32 relative to support surface 16. When restriction portion 51 is away from paper blocking plate 31, paper blocking plate 31 is rotated in a counterclockwise direction into recess 20 such that paper can contact inclined surface 18 in a paper feed condition, as illustrated in
Referring to
As feed of the paper is completed, restriction portion 51 is rotated in the counterclockwise direction and from the paper processing position to the paper blocking position, such that one portion of restriction portion 51 leans paper blocking plate 31 to block the paper. Those skilled in the art will understand that one-way spring 53 has a release condition and a tighten condition, and one-way spring 53 is in the tighten condition when shaft 40 is rotated in the counterclockwise direction.
As illustrated in
Additionally, paper processing device 60 further includes a paper sensor 11, disposed on paper holder 10 and coupled to controller 12, for detecting the paper. If paper processing device 60 is the paper feed condition and paper sensor 11 doesn't detect the paper, paper sensor 11 sends a control signal S1 to controller 12 for driving restriction portion 51 from the paper processing position to the paper blocking position. As operation mentioned in
While the invention has been described by way of example and in terms of a preferred embodiment, it is to be understood that the invention is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures.
Claims
1. A paper-blocking assembly for a paper processing device, comprising:
- a paper holder for holding paper;
- a shaft;
- a restriction portion disposed on the shaft, when the shaft rotating, the restriction portion moving between a first position and a second position and the shaft driving a paper feeding portion of the paper processing device; and
- a paper blocking portion comprising a paper blocking plate, the paper blocking portion rotatorily coupling to the paper processing device;
- wherein when the restriction portion is in the first position, the restriction portion abuts the paper blocking plate to make the paper blocking plate in a paper blocking position, and when the restriction portion is in the second position, the restriction portion is away from the paper blocking plate to cause the paper blocking plate in a paper feeding position and the paper feeding portion feeds the paper.
2. The paper-blocking assembly according to claim 1, further comprising a one-way spring disposed between the restriction portion and the shaft, wherein the spring is in a release condition and a tighten condition by rotating the shaft at a first direction and a second direction respectively, wherein when the restriction portion is in the first position, the spring is in the tighten condition, and when the restriction portion is in the second position, the spring is in the release condition.
3. The paper-blocking assembly according to claim 1, wherein when the restriction portion rotates from the first position to the second position, the restriction portion maintains at the second position and the paper feeding portion feeding paper.
4. The paper-blocking assembly according to claim 3, further comprising:
- a stopper disposed at the second position; and
- an one-way spring disposed between the restriction portion and the shaft; and
- wherein when the restriction portion abuts the stopper, the restriction portion stops further rotating.
5. The paper-blocking assembly according to claim 1, wherein the restriction portion is cam, a first end of the cam is coupled to the shaft, and a second end of the cam abuts the paper blocking plate at the first position for blocking feeding the paper.
6. The paper-blocking assembly according to claim 1, wherein the paper holder comprises a recess therein and the paper blocking portion is adapted to be moved into the recess at the paper feeding position.
7. The paper-blocking assembly according to claim 6, the paper blocking portion further comprising: a pivot disposed between the weight portion and the paper blocking plate, wherein when the restriction portion is away from the paper blocking plate, the paper blocking plate moves to the paper blocking position based on the weight portion.
- a weight portion; and
8. The paper-blocking assembly according to claim 1, further comprising a gear set disposed between the shaft and the paper feeding portion.
9. The paper-blocking assembly according to claim 1, further comprising a paper sensor, wherein the restriction portion is rotated from the second position to the first position when the paper sensor detects no paper.
10. A paper processing device, comprising:
- a paper feeding portion;
- a paper holder for holding paper;
- a shaft;
- a restriction portion disposed on the shaft, when the shaft rotating, the restriction portion moving between a first position and a second position and the shaft driving the paper feeding portion; and
- a paper blocking portion comprising a paper blocking plate, the paper blocking portion rotatorily coupling to the paper processing device;
- wherein when the restriction portion is in the first position the restriction portion abuts the paper blocking plate to make the paper blocking plate in a paper blocking position, and when the restriction portion is in the second position, the restriction portion is away from the paper blocking plate to make the paper blocking plate in a paper feeding position and the paper feeding portion feeds the paper.
11. The paper processing device according to claim 10, further comprising a one-way spring disposed between the restriction portion and the shaft, wherein the spring is in a release condition and a tighten condition by rotating the shaft at a first direction and a second direction respectively, wherein the spring drives the restriction portion in the first position when the spring is in the tighten condition, and the restriction portion is in the second position when the spring is in the release condition.
12. The paper processing device according to claim 10, wherein when the restriction portion rotates from the first position to the second position, the restriction portion maintains at the second position and the paper feeding portion feeding the paper.
13. The paper processing device according to claim 12, further comprising:
- a stopper disposed at the second position; and
- an one-way spring disposed between the restriction portion and the shaft; and
- wherein when the restriction portion abuts the stopper, the restriction portion stops further rotating.
14. The paper processing device according to claim 10, wherein the restriction portion is cam, a first end of the cam is coupled to the shaft, and a second end of the cam abuts the paper blocking plate at the first position for blocking feeding the paper.
15. The paper processing device according to claim 10, wherein the paper holder comprises a recess therein and the paper blocking portion is adapted to be moved into the recess at the paper feeding position.
16. The paper processing device according to claim 15, wherein the paper blocking portion further comprising; wherein when the restriction portion is away from the paper blocking plate, the paper blocking plate moves to the paper blocking position based on the weight portion.
- a weight portion; and
- a pivot disposed between the weight portion and the paper blocking plate,
17. The paper processing device according to claim 10, further comprising a gear set disposed between the shaft and the paper feeding portion.
18. The paper processing device according to claim 10, further comprising a paper sensor, wherein the restriction portion is rotated from the second position to the first position when the paper sensor detects no paper.
Type: Application
Filed: Mar 29, 2010
Publication Date: Sep 30, 2010
Applicant: QISDA CORPORATION (Taoyuan Shien)
Inventor: Yu-Cheng Lin (Taipei County)
Application Number: 12/748,474
International Classification: B65H 3/54 (20060101);