CN1847120A - Paper separating mechanism of image I/O equipment - Google Patents
Paper separating mechanism of image I/O equipment Download PDFInfo
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- CN1847120A CN1847120A CN 200510025114 CN200510025114A CN1847120A CN 1847120 A CN1847120 A CN 1847120A CN 200510025114 CN200510025114 CN 200510025114 CN 200510025114 A CN200510025114 A CN 200510025114A CN 1847120 A CN1847120 A CN 1847120A
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Abstract
The paper separating mechanism of image I/O equipment consists of pick-up roller, layered friction pads and elastic assembly. The elastic assembly provides force for the layered friction pads to contact the pick-up roller; the layered friction pads have one first pad and one second pad in stepped structure, and the second pad forms overpressure contact with the pick-up roller. During separating paper sheets, the pick-up roller cooperates with the first pad and the second pad for twice paper separation to raise the single sheet feeding probability. The first paper separation and the second paper separation are continuous and has no influence on feeding rate and the image scanning and printing period.
Description
Technical field
The present invention relates to a kind of paper distributing mechanism, applied to automatic paper feeder.Described automatic paper feeder is arranged on scanner, duplicator, multifunctional paper feeding machine, or on image input media such as chopping machine or the image output device, the paper that feeds in the paper box enters these image input media or image output devices, to carry out image output/input etc., described paper distributing mechanism then provides individual function that feeds paper to reach the repeatedly effect of separation.
Background technology
One of mode that device of image scanning scans is the top that file to be scanned is placed on scanning window, is scanned to obtain the image of file by the optical module that moves then.Another kind of scan mode is file to be placed on put paper box, and (auto document feeder) makes paper and optical module relative motion by automatic paper feeder, and optical module scanning under static state obtains the image of file.Automatic paper feeder has the inside that paper distributing mechanism (sheet separating device) can be brought paper into described automatic carriage device one by one.Above-mentioned automatic paper feeder inside comprises the roller set (not shown) of being made up of some rollers, and by the formed paper feed channel of roller set.
For chopping machine, also can utilize paper distributing mechanism to bring paper into automatic paper feeder one by one and printer is imprinted on paper surface with image then.
See also shown in Fig. 1,2, comprise acquisition roller (pick-uproller) 12, friction pad (pad) 14 and elastic parts 16 in the above-mentioned paper distributing mechanism 10.Wherein, described elastic parts 16 provides application force to described friction pad 14, makes described friction pad 14 described acquisition roller 12 surfaces that recline.
During use, paper 18 is placed on the feeding box (not shown), and paper 18 1 ends are between described acquisition roller 12 and friction pad 14, the rotation by described acquisition roller 12 can drive paper 18 one by one.
Yet actual the use found; automatically paper feed often has plurality of sheets of paper and opens 18 and brought into paper distributing mechanism 10 in-to-in situations simultaneously; particularly too little in separation angle (θ angle in as figure), or use the bigger paper (for example avenging copper paper) of poundage, be more prone to take place aforementioned circumstances.Looking into the causes is that paper 18 thickness weights differ, and adds that the uneven institute of paper 18 surface friction coefficients causes.
Improve the problem of a multi-paper feed, can reach by adjusting the separation angle.In addition, by repeatedly separation action, also can avoid the situation of a multi-paper feed.And the technology that the present invention will disclose is exactly to utilize repeatedly separation design to make automatic paper dividing mechanism can improve the probability of individual paper feed when paper feed.
Summary of the invention
Automatically the principle of separation is: the friction force when between acquisition roller and paper is greater than the friction force between paper and paper, and then the acquisition roller of Zhuan Donging can drive paper.Maybe the friction force when between acquisition roller and paper is greater than the friction force between paper and friction pad, and then the acquisition roller of Zhuan Donging can drive paper.
One of purpose of the present invention provides a kind of paper distributing mechanism with repeatedly separation function, and it has provides secondary separation function at least, makes paper can improve the probability of individual paper feed when paper feed, and does not influence scan function and paper feed speed.
Two of purpose of the present invention provides a kind of paper distributing mechanism with repeatedly separation function, and it has the structure design of simplifying, and does not increase the stack-mounted degree of difficulty on making.
According to above-mentioned purpose, effect, the paper distributing mechanism of the disclosed image I/O equipment of the present invention comprises: capture roller, be assembled into the paper feed end of paper-advance unit; Multi-level friction pad is set at the body of described paper-advance unit and corresponding to described acquisition roller, it comprises the first pad portion and the second pad portion at least; And springing, provide application force to make described multi-level friction pad rely on described acquisition roller, be subjected to the effect of described springing by described multi-level friction pad, make described second pad portion and described acquisition roller present the state that presses of overvoltage at least.
When described acquisition roller rotate and many paper by described first pad portion and described acquisition roller between the time, then described acquisition roller cooperates the second pad portion to carry out the separation second time again, so that only a piece of paper is opened the formed paper feed channel of the roller set that enters described mechanism for automatically feeding paper.
Description of drawings
Fig. 1 is the paper distributing mechanism External view of background technology;
Fig. 2 is the paper distributing mechanism structural representation of background technology;
Fig. 3 is the embodiments of the invention External views;
Fig. 4 is the embodiments of the invention structural representations;
Fig. 5 is one of running condition scheme drawing of the present invention;
Fig. 6 is one of running condition scheme drawing of the present invention;
Fig. 7 is another embodiment of the present invention structural representation.
The specific embodiment
Below, lift preferred embodiment, and cooperate legend to describe in detail promptly according to purpose of the present invention, effect and textural association.
Paper distributing mechanism (sheet-separating device) is applied to automatic paper feeder (autodocument feeder).The structure of described automatic paper feeder also has the roller set of being made up of some rollers except comprising described paper distributing mechanism.The paper delivery end of the corresponding described paper distributing mechanism of above-mentioned roller set.And described roller set is the paper that is used for driving through described paper distributing mechanism, but and forms the paper feed channel paper supply between each roller set and open and pass through.Above-mentioned automatic paper feeder can be arranged on scanner, chopping machine, duplicator or multifunctional paper feeding machine images such as (multi-function peripheral) and input or output on the equipment.
See also shown in Fig. 3,4, the paper delivery end of putting paper box that the disclosed paper distributing mechanism 30 of the present invention is set corresponding to image input media or image output device, it comprises acquisition roller (pick-uproller) 40, multi-level friction pad (multi-layer pad) 50, film (mylar) 60 and elastic parts 70.
Wherein, the rotating shaft 42 that axially is equipped with of described acquisition roller 40 is rotated in order to drive described acquisition roller 40.Described multi-level friction pad 50 is adjacent to described acquisition roller 40 side faces, and borrows the application force of described elastic parts 70, makes described multi-level friction pad 50 rely on described acquisition roller 40.And described multi-level friction pad 50 is subjected to described elastic parts 70 ejection shapes at a tilt angle, is defined as separation angle θ.
Described film 60 is located at the surface of described multi-level friction pad 50, and corresponding described acquisition roller 40.
Please consult shown in Figure 4ly again, described multi-level friction pad 50 comprises the 52 and second pad portion of the first pad portion (first padlayer) (second pad layer) 54.The described first pad portion 52 stacks together with the described second pad portion 54, and the described first pad portion 52 can be that identical materials is made with the described second pad portion 54, also can be that different materials is made.
Because 54 in the described second pad portion assembles seasonal described acquisition roller 40 overvoltages (over-pressing) and contacts the described second pad portion 54 between the described first pad portion 52 and acquisition roller 40.And described acquisition roller 40 surfaces keep normal state of contact with the described first pad portion 52.
See also shown in Figure 7ly, described multi-level friction pad 50 can comprise the first pad portion 52 and the second pad portion 54.The wherein said second pad portion 54 is made into and includes first one 56 and second ones 58 hacksaw structure, with the friction force between increase and the paper, improve the separation effect, and described first one 56, second ones 58, and the described first pad portion 52 all contacts with described acquisition roller.It should be noted that second one 58 of being positioned at the described second pad portion 54 tops and described acquisition roller 40 formed press contacts.
The first above-mentioned pad portion 52 and the second pad portion 54 are two pads independently, also one can be made with the described second pad portion 54 by the described first pad portion 52.Or multi-level friction pad 50 is designed to surpass the structure of two pad stacked combination.The pad that only is positioned at away from described elastic parts 70 must form press contacts with described acquisition roller 40.
See also shown in Fig. 5,6, described acquisition roller 40 rotates when carrying out automatic separation.Under ideal state, be positioned at whole repeatedly the paper 18 of below driven by described acquisition roller 40 and shift to the paper delivery end (output end) 32 of described paper distributing mechanism 30, and paper 18 can be brought into described automatic paper feeder inside in some roller set (not shown)s of described paper delivery end 32 by corresponding.Still cause many paper to move simultaneously when the second pad portion 54 cooperates with described acquisition roller 40, then the plurality of sheets of paper of Chong Dieing can carry out the separation second time under the first pad portion 52 acts on described acquisition roller 40.
In above-mentioned textural association, the described second pad portion 54 formed press contacts with described acquisition roller 40, can make in the whole repeatedly paper one of below form big contact friction force, therefore when first time separation action, have the probability that improves individual paper feed with described acquisition roller 40.If the action of separation for the first time forms multi-paper feed, then cooperate the separation effect second time that forms with the described first pad portion 52 by described acquisition roller 40, then can make the paper separation of overlapping reach the effect that raising separates paper again.Therefore along with increasing the separation number of times, can reach at every turn more really all is the effect of individual paper feed.
Disclosed textural association and running condition according to the present invention, the present invention has the following advantages:
1, the present invention can be stacked to the friction pad more than two or two multi-level friction pad, so structure is simplified very much, and assembling or make all is very easy to.
2, general separation design can have been reached low multi-paper feed probability (low miss feedprobability), again by repeatedly separation design of the present invention, more can reduce mistake paper feed probability.If for example general separation design-calculated mistake paper feeder is (5%) 5 percent, then through twice separation design, mistake paper feed probability is reduced to 25/10000ths (5% * 5%), so the present invention can improve the probability of individual paper feed really.
3, separation action of the present invention is successional, thus can not postpone the speed of paper feed, and the time that can not influence scan-image or print image.
More than be preferred embodiment of the present invention and design graphic, only preferred embodiment and to design graphic only be casehistory, it is not the interest field that is used to limit the technology of the present invention, all interest fields that is contained with the technological means or the claim content of equalization are implemented, and all do not break away from category of the present invention and are applicant's interest field.
Claims (7)
1, a kind of paper distributing mechanism of image I/O equipment is to be assembled in the paper-advance unit, is used for paper feed-in seriatim, and described paper distributing mechanism includes:
The acquisition roller is to be arranged on rotationally in the described paper-advance unit;
Springing provides application force to make described multi-level friction pad rely on described acquisition roller;
Multi-level friction pad, be arranged on the body of described paper-advance unit, and corresponding described acquisition roller, it is characterized in that, described multi-level friction pad comprises at least the first pad portion and the second pad portion, and the described second pad portion repeatedly places the top of the described first pad portion to form the step shape structure;
Wherein, the described second pad portion of described multi-level friction pad also was the combination of pressing of press contacts with described acquisition roller.
2, the paper distributing mechanism of image I/O equipment as claimed in claim 1 is characterized in that, described first pad portion and the described second pad portion are unlike material.
3, the paper distributing mechanism of image I/O equipment as claimed in claim 1 is characterized in that, the described first pad portion is identical material body with the described second pad portion.
4, the paper distributing mechanism of image I/O equipment as claimed in claim 1 is characterized in that, the top of the described second pad portion is equipped with the corresponding described acquisition roller of film.
5, the paper distributing mechanism of image I/O equipment as claimed in claim 1 is characterized in that, described first pad portion and the described second pad portion are one and form the step shape structure.
6, the paper distributing mechanism of image I/O equipment as claimed in claim 1 is characterized in that, the side that the described second pad portion contacts with described acquisition roller forms hacksaw structure.
7, the paper distributing mechanism of image I/O equipment as claimed in claim 1 is characterized in that, described springing is located between the body of described multi-level friction pad and described automatic paper feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100251142A CN100372749C (en) | 2005-04-15 | 2005-04-15 | Paper separating mechanism of image I/O equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100251142A CN100372749C (en) | 2005-04-15 | 2005-04-15 | Paper separating mechanism of image I/O equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1847120A true CN1847120A (en) | 2006-10-18 |
| CN100372749C CN100372749C (en) | 2008-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100251142A Active CN100372749C (en) | 2005-04-15 | 2005-04-15 | Paper separating mechanism of image I/O equipment |
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| Country | Link |
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| CN (1) | CN100372749C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818742A (en) * | 2012-11-19 | 2014-05-28 | 京瓷办公信息系统株式会社 | Sheet feed apparatus, document conveying apparatus and image forming apparatus |
| CN105668274A (en) * | 2014-10-14 | 2016-06-15 | 虹光精密工业股份有限公司 | Paper separating device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2619959B2 (en) * | 1989-09-16 | 1997-06-11 | キヤノン株式会社 | Paper feeder |
| US5244191A (en) * | 1991-07-08 | 1993-09-14 | Matsushita Electric Industrial Co., Ltd. | Sheet feeding apparatus for image recording system |
| JPH05278884A (en) * | 1992-03-31 | 1993-10-26 | Ricoh Co Ltd | Paper sheet feeding device |
| JP2003072970A (en) * | 2001-09-03 | 2003-03-12 | Matsushita Electric Ind Co Ltd | Device for separating and feeding paper |
| CN2825551Y (en) * | 2005-04-15 | 2006-10-11 | 虹光精密工业（苏州）有限公司 | Paper-separation mechanism for image input/output apparatus |
-
2005
- 2005-04-15 CN CNB2005100251142A patent/CN100372749C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818742A (en) * | 2012-11-19 | 2014-05-28 | 京瓷办公信息系统株式会社 | Sheet feed apparatus, document conveying apparatus and image forming apparatus |
| CN103818742B (en) * | 2012-11-19 | 2016-08-17 | 京瓷办公信息系统株式会社 | Paper feed, original document feeder and image processing system |
| CN105668274A (en) * | 2014-10-14 | 2016-06-15 | 虹光精密工业股份有限公司 | Paper separating device |
| CN105668274B (en) * | 2014-10-14 | 2020-05-26 | 虹光精密工业股份有限公司 | Paper separating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100372749C (en) | 2008-03-05 |
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