TW555675B - Automatic document feeder - Google Patents

Abstract

An automatic document feeder (ADF) has a document outlet. The automatic document feeder is used to feed a document loaded on a document load seat out of the document outlet along a feeding direction. The ADF at least comprises: an idle bearing seat, an idle roller, a transmission shaft, a roller, and a paper sweeping element. The idle bearing seat is arranged on the document outlet, and has a document outlet perpendicular shaft, an idle roller groove, and a document sweeping element groove, in which the document outlet perpendicular shaft is perpendicular to the feeding direction, and the idle roller is rotatably installed in the idle roller groove along the direction of the document outlet perpendicular shaft. The surface of the idle roller protrudes on the idle roller groove. The transmission shaft rotates along the document outlet perpendicular shaft. The roller is coaxially mounted on the transmission shaft. The surface of the roller contacts with the surface of the idle roller. The document sweeping element is installed on the transmission shaft corresponding to the document sweeping element groove.

Description

: 0 :) 0 /: > V. Description of the invention G) [Field of the invention-The present invention relates to a kind of document feeder, ADF ^ automatic feeder in the automatic feeder. And especially There is a kind of application in scanning [Background of the Invention] In the many peripherals of a personal computer # Prepared, and having an automatic paper feed scanner can be said to be a basic configuration. The automatic paper feeder not only makes the paper feed scanner Among them-the scanning of the person and the scanner can be automatically and conveniently sent at a faster speed. Σ 上 'can also make the scanner scan the document, please refer to Figure 1, its solo; fill your schematic. Traditional self-narration, Yu: The structure of the traditional automatic paper feeder). The paper dispenser 100 has a paper outlet (not shown in the figure), which is # 秘 秘 / Will be placed in a paper holder (the paper port is not shown in the figure.) (Also not shown in the figure) The feed-out output shaft 110 moves along the feed-out direction D. The paper feeder 100 mainly includes an idler bearing 110, an idler 120, and a transfer wheel. A roller 14 is provided. The idler bearing 110 is provided with a vertical output shaft 15 and懒 说 # The vertical axis of the paper output is 15 ° and is perpendicular to the feeding direction D of the paper being fed. 1 90 mesh Λ seat U 〇 is arranged at the paper exit of the automatic feeder 100. The idler roller can be along the vertical axis of the paper output. The method of turning in the direction of 50 ° is arranged on the idler groove 170 of the Qn / eyewheel 120 and protruding from the idler groove 160. The drive train can rotate in the direction of the vertical paper exit shaft 150. Roller 14 〇 is arranged on the transmission shaft 13 coaxially. The surface of the roller 18 and the surface of the idler

Page 4 555675 V. Description of the invention (2) 1 70 contact. The transmission shaft 130 is used as a power source to drive the roller 140 to rotate in the rotation direction shown in the figure. According to this, the roller surface 18 can provide a force F1 to act on the idler surface 17o, so that the idler 12o can follow the opposite side of the roller 14o, and thereby the fed paper can be moved along the idle direction with the idler. There are 120 rounds. The paper holder may be the scanning platform of the scanner. The rollers i40 and taxi 0 may be made of a material with elasticity and a slightly rough surface, such as rubber. … It can be known from the above that # # of the automatic paper feeder has the disadvantage that the frictional resistance between the sheet and the idler bearing 110 (the surface contact of the paper / h bearing of the fed paper) is greater than the roller surface 18 〇The surface 170 provided to the acceptor bismuth? Pulling the mountain + 丨 month ^ clothing will feed & law i hand feed In the total force of the feed to D, then the feed paper Yu * no to be fed by the automatic feeder Φ mountain k ^ reference A A feed out the paper outlet. This will cause the phenomenon of paper jams, which will seriously affect the smooth running of scanning. [Objective and Summary of the Invention] The purpose of the present invention is to provide an automatic library paper so that the automatic feeder will not perform the entire scanning work due to the paper idler of the paper being fed. The paper will feed the paper again, and it will affect the paper according to the above purpose.

Page 5 555675 V. Description of the invention (3) An automatic paper feeding is placed in the slot of the feeding paper element and the scanning wheel is in the direction of the idler wheel. station. The pressure can be understood, as follows. The paper holder includes at least. Idler bearing The slot of the paper element can rotate along the surface of the idler idler; the roller rotates and the corresponding piece of the idler table rotates, and the idler can be fed in the direction of feeding. The paper element may be a polyester film, so that the paper of the present invention is particularly preferred to move the paper feeder to discharge the paper out. The automatic shaft, the roller, the vertical axis for scanning the paper, and the idler are in the feeding direction; the idler is placed in the idler slot, which can be driven along the vertical axis of the paper output shaft, and its roller is arranged with the paper sweep to drive the roller With a force acting on the obstacle, the direction in which the paper-feeding element can be applied is based on the scanning of the flat sheet by the scanner, and the sheet point can be more easily changed. As a detailed illustration, it has Paper outlet, this self-feeding paper feeds in the direction of the feed out: the idler seat, the idler, the transmission is arranged at the paper outlet, and has a way in which the vertical axis of the paper output shaft is rotated in the direction of the vertical wheel. Idler groove; the drive shaft is arranged in contact with the surface in a coaxial manner; and the paper sweeping element is on the moving shaft. According to this, the surface of the transmission shaft wheel can provide a first rotation with the roller in the opposite direction, merge between the roller and the idler, and feed the paper. Among them, in the second, the paper bearing can be flexible. ) (Mylar) 〇 The above objectives, features, and preferred embodiments, in conjunction with the attached drawings [preferred embodiments] The automatic paper feeder provided by the present invention is provided with a sweeping paper on the drive shaft of the traditional automatic paper feeder Components and make the idler bearing more corresponding to the sweep

TW0838F (Lijie) .ptd

555675 V. Description of the invention (4) Paper scanning element slot of the paper element (so that the paper scanning element can only slightly touch or not touch the idler bearing when it rotates with the drive shaft). The function of the paper sweeping element is to provide a second force in the feeding direction on the fed paper, so as to make up for the lack of the combined force of the feeding and feeding of the fed paper on the roller surface and the idler surface. By this, the paper feeding element can completely overcome the frictional resistance between the paper surface and the surface of the idler bearing seat, and can be fed by the paper feeding port. This will also prevent paper jams in the automatic document feeder, which can effectively improve the quality of scanning. Please refer to Figure 1 and Figure 2 at the same time. FIG. 2 is a schematic diagram showing the structure of an automatic paper feeder according to a preferred embodiment of the invention. The automatic paper feeder 200 of the present invention has the same components as the conventional automatic paper feeder 100, and is further provided with a paper scanning element 210 and a paper scanning element slot 220 located on the idler roller 〇. The π paper scanning element 210 is arranged on the transmission shaft 130 corresponding to the paper scanning element groove 22o. The direction of rotation shown at the same time drives the roller "and the paper το member 210 rotates. I mentioned in Figure 1 that the roller 180 can provide a first force η ^ surface 170 according to the rotation of the roller 140, and So that the idler 120 can follow the opposite direction of the roller 140, and the fed paper can be fed in the feeding direction!) Is fed into the roller 14o and the product a. The roller surface 180 and the idler surface 708 Provided to the recipient: the combined force in the output direction D, the purpose of which is to feed the recipient's paper (^) (not shown in the figure). By, I Zhang Chengzuo but 'in the traditional automatic feeder In 100, roller 14 and idler

TW0838F (Powerjet) .Ptd Page 7 555675

On the same side, θ raises / offs the combined force that makes the paper feed from the fork, but this is the same as the feed direction D. The surface of the door 丄 is often smaller than the feed of the feed nit, which causes a paper jam. ~ Element 发明 ο Invented a paper sweeper which is not found in the traditional automatic feeder 100. paper paper / eight / the second force F2 in the same direction as the feeding direction D is received by the second force F2 plus the original force Of the roller surface 18. The combined force provided by " ^ _ 0 ’can overcome the frictional resistance between the paper surface of the paper being fed == 〇. As a result, the paper-roller is easily fed out of the automatic feeder, and there is no more paper jam. The function of the paper sweeping element groove 220 is to allow the flexible paper sweeping element 21 to pass through the idler seat 110 without touching or even touching the idler seat 110 at all. The maximum second force F2 that the paper scanning element 210 can provide to the fed paper is that the second force F2 acts on the edge of the fed paper parallel to the vertical axis 150 of the paper. The paper support in the present invention may be a scanning platform of a scanner. The paper scanning element 210 may be a flexible sheet, and the flexible sheet may be a polyester film. A paper scanning element 2 1 0 is further provided on the transmission shaft 130, so that the paper scanning element 2 1 0 can provide a second force F2 on the fed paper according to the rotation of the transmission shaft 130. The feeding paper can no longer feed the feeding paper due to the insufficient combined force provided by the roller surface 1 80 and the idler surface 1 70 in the feeding direction D, causing a jam situation.

TW0838F (Powerjet) .ptd Page 8 555675

V. Description of Invention (6)

[Effects of the Invention] The advantages of the automatic paper feeder disclosed in the above embodiments of the present invention are as follows: Even if the paper surface of the paper to be fed and the idler bearing table are as follows: the resistance is too large, but due to the additional paper sweep The component exerts a second force on two: friction causes the automatic paper feeder of the present invention to have a combined force of the feeding direction on the paper of the receiving hall, which is larger than that of the traditional paper & Ground is fed from the paper holder. ^ • Yes: With the paper jams that often occur in the automatic document feeder, this will be able to defeat the traditional smooth progress. Advantageous scanning work does not depart from the present invention, so the present invention prevails. In summary, although the present invention has been disclosed in the embodiments without limiting the present invention, anyone skilled in the art can, within the spirit and scope, make various modifications and retouches, and the scope of protection shall be attached as the attached As defined by the scope of patent application

555675 Simple description of the diagram [Simplified description of the diagram] The first diagram shows the structure of the traditional automatic paper feeder. FIG. 2 is a schematic structural diagram of an automatic paper feeder according to a preferred embodiment of the present invention. [Illustration of drawing symbols] 100, 20 0: Automatic paper feeder 11 0: Idler carrier 120: Idler 130: Transmission shaft 140: Roller 1 50: Paper vertical axis 160: Idler groove D: Feed direction 170: idler surface 1 8 0: roller surface F1: first force 2 1 0 • paper scanning element 2 2 0: paper scanning element groove F 2: second force

TW0838F (Powerjet) .ptd Page 10

Claims (1)

555675 VI. Application for patent Fan Yuan 1. A self-advanced (ADF), one of the sheet feeders has at least one idler paper bearing vertical axis, one idler perpendicular to the feed-out idler, and the idler groove Among them, a driving shaft, a roller, and a roller surface are parallel to the paper scanning element shaft; wherein the roller surface can provide a first direction in the same direction as the idler according to the idle direction. Apply for paper support system sweeping 3. If you apply for a moving feeder-paper outlet 3 paper feeding along the line: the seat, equipped with a groove and a direction; so that it can follow the idler, can be coaxial with the The idler member is configured, and the paper scanning element is based on this, wherein the second force-feeding dynamic paper feeder, wherein the dynamic paper feeder, wherein the (automatic document feeder) is used to place the paper The paper output port is fed out in a feeding direction, and is automatically provided at the paper output port. The idler bearing seat has a paper output element slot, wherein the paper output vertical axis is arranged in a manner of rotating in the direction of the paper output vertical axis. An idler surface protruding from the idler groove; The method is arranged on the transmission shaft and the surface of the roller contacts; and the transmission transmission shaft corresponding to the slot of the paper scanning element is used to drive the roller and the paper scanning element to rotate, which can provide a first The force is applied to the surface of the idler wheel and the roller is rotated in the opposite direction, so that the character is good, and the fed paper can be fed between the roller and the idler. Outward direction. Scanner platform of g scanner described in item 1 of the patent scope. The paper scanning element described in item 1 of the patent scope is a flexible (f 1 ex ib 1 e) sheet. 555675 VI. Patent application park 4 · The automatic paper feeder as described in item 3 of the scope of patent application, wherein the sheet is a polyester film (My lar). 5. The automatic paper feeder according to item 4 of the patent application scope, wherein the paper holder is a scanning platform of a scanner. 6 · —A scanner having an automatic paper feeder, the automatic paper feeder has a paper outlet, and is used to feed one of the fed paper placed in a paper holder in a ^ feed direction out of the paper outlet The scanner at least includes: an idler bearing seat disposed at the paper outlet, the idler bearing seat having a paper discharge vertical shaft, an idler groove and a paper scanning element groove, wherein the paper discharge vertical shaft system Perpendicular to the feeding direction; an idler 'is arranged in the idler slot in a manner rotatable in the direction of the vertical axis of the paper output, one of the idler surfaces of the idler protrudes from the idler slot; A transmission shaft can be rotated in the direction of the vertical axis of the paper output; a roller 'is arranged on the transmission shaft in a coaxial manner, and one of the rollers' surface is in contact with the idler surface; and a paper scanning element is disposed On the transmission shaft corresponding to the slot of the paper scanning element; Wherein, the transmission shaft is used to drive the roller and the paper scanning element to rotate, the surface of the roller can accordingly provide a first force to act on the surface of the idler and make the idler rotate in the opposite direction of the roller. Therefore, the fed paper can be fed between the roller and the idler along the feeding direction, and the paper scanning element can accordingly provide a second force on the fed paper, wherein the first The direction of the two forces is the same as the direction of the feeding. 7 · The scanner as described in item 6 of the patent application scope, wherein the scanning paper 555675 TW0838F (Powerjet) .ptd Page 13