US20030201595A1 - Automatic document-feeding apparatus - Google Patents
Automatic document-feeding apparatus Download PDFInfo
- Publication number
- US20030201595A1 US20030201595A1 US10/132,158 US13215802A US2003201595A1 US 20030201595 A1 US20030201595 A1 US 20030201595A1 US 13215802 A US13215802 A US 13215802A US 2003201595 A1 US2003201595 A1 US 2003201595A1
- Authority
- US
- United States
- Prior art keywords
- document sheets
- document
- roller
- sheets
- picking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/52—Friction retainers acting on under or rear side of article being separated
- B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
- B65H3/5215—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned under articles separated from the top of the pile
- B65H3/5223—Retainers of the pad-type, e.g. friction pads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/60—Other elements in face contact with handled material
- B65H2404/69—Other means designated for special purpose
- B65H2404/694—Non driven means for pressing the handled material on forwarding or guiding elements
- B65H2404/6942—Non driven means for pressing the handled material on forwarding or guiding elements in sliding contact with handled material
Definitions
- the present invention relates to an automatic document-feeding apparatus, and more particularly to an automatic document-feeding apparatus with superior capability of document pagination.
- ADF automatic document feeder
- the automatic document feeder is a useful device for documenting image input system such as image scanner.
- the automatic document feeder functions to transport page by page documents containing image data, into the scanning area of the image input device.
- FIG. 1 shows the basic structure of a conventional automatic document feeder.
- the automatic document feeder comprises a pagination roller 102 , a pickup roller 104 and a retard pad 108 .
- the retard pad 108 is pressed against the pagination roller 102 by a pressure spring 106 .
- a stack of documents 110 are mounted on bottom of the pickup roller 104 .
- the conventional automatic document feeder described above indeed presents a problem which would harm the function of an image scanner.
- the problem is that the continuous fed documents are not separated well when the pickup roller 104 picks up and sends more than one document sheet once. That is, more than two document sheets are transported to the retard pad 108 and under the pagination roller 102 usually.
- the excess fed document sheets undoubtedly would impede the normal operation the whole machine since the excess fed document sheets could hinder the feeding of the following document sheets or jam in the automatic document feeder. Therefore, it is desirable to provide an automatic document-feeding apparatus with superior capability of document pagination to overcome the problem of the prior art.
- the invention provide an automatic document-feeding apparatus with superior capability of document pagination.
- the apparatus comprises means for picking up and transporting document sheets, means for separating document sheets into a sequence of transportation, and means for pressing document sheets.
- the means for picking up and transporting document sheets contact and transport document sheets and the means for separating document sheets comprise an incline plane used to receive and support the document sheet being transported from the means for picking up and transporting document sheets.
- the means for pressing document sheets press the document sheets to keep the document sheets and the incline plane in tight contact.
- the automatic document-feeding apparatus of this invention comprises means for picking up document sheets, means for separating document sheets into a sequence of transportation, means for pressing document sheets, and means for transporting document sheets.
- the means for picking up document sheets contact and pick up document sheets and the means for separating document sheets comprise an incline plane used to receive and support the document sheet being transported from the means for picking up document sheets.
- the means for pressing document sheets press the document sheets to keep the document sheets and the incline plane in tight contact and the means for transporting document sheets receive and transport the document sheets being transported from the means for separating document sheets.
- FIG. 1 shows the basic structure of a conventional automatic document feeder
- FIG. 2 shows an automatic document-feeding apparatus of this invention.
- the automatic document-feeding apparatus 200 comprises means for picking up and transporting document sheets, means for separating document sheets into a sequence of transportation and means for pressing document sheets comprising a pressing plate 212 .
- the means for picking up and transporting document sheets comprise rollers 202 and 204 as well as at least one motor (not shown) driving the rollers 202 and 204 .
- the roller 204 comprising a rubber roller is used to contact, pick up and drive the top sheet of a stack of document sheets 210 .
- the roller 202 comprising a rubber roller is used to transport the document sheet from the roller 204 to the scanning area of an image scanner.
- the roller 202 and 204 could be drove by a single motor or two motors individually and roll synchronously.
- the means for separating document sheets into a sequence of transportation comprises a supporting pad 208 as well as a plurality of spring 206 pushing the supporting pad 208 against to the roller 202 .
- the pressing plate 212 provides the document sheets 210 with a downward pressing force so that the document sheets 210 can be pressed and the front edges of the document sheets 210 can keep a tight contact with the supporting pad 208 .
- the pressing plate 212 can be pivoted on a pivot 205 which is also the pivot of the roller 204 .
- the pressing plate 212 can also be mounted somewhere else.
- the supporting pad 208 preferably comprises an incline plane 208 a and a cave surface 208 b .
- the incline plane 208 a provides the document sheets 210 with an upward pushing force and a separating force so that the top one of the document sheets 210 can keep a tight contact with the pressing plate 212 and the document sheets 210 can be separated into a sequence of transportation while the roller 204 rolls.
- the cave surface 208 b provides the document sheet 210 being transported with a support so that the document sheet 210 can contact with the roller 202 tightly.
- the cave surface 208 b contacts the roller 202 while no document sheet is inserted therebetween so as to provide the document sheet 210 with a friction force.
- the springs 206 support and push the supporting pad 208 .
Abstract
Description
- 1. Field of the Invention
- The present invention relates to an automatic document-feeding apparatus, and more particularly to an automatic document-feeding apparatus with superior capability of document pagination.
- 2. Description of the Related Art
- It is publicly known to use a document feeding apparatus so-called as an automatic document feeder (ADF) in order to supply automatically a document to a document reading portion in an image forming apparatus. The automatic document feeder (ADF) is a useful device for documenting image input system such as image scanner. In the application of the so-called “Paper-Feed” image input device, the automatic document feeder functions to transport page by page documents containing image data, into the scanning area of the image input device.
- FIG. 1 shows the basic structure of a conventional automatic document feeder. As shown in the figure, the automatic document feeder comprises a
pagination roller 102, apickup roller 104 and aretard pad 108. Theretard pad 108 is pressed against thepagination roller 102 by apressure spring 106. A stack ofdocuments 110 are mounted on bottom of thepickup roller 104. - Ideally, when the
pickup roller 104 starts to rotate, adocument 110 at the top of the stack of the documents is fetched by thepickup roller 104 to theretard pad 108 and all documents other than the one at the top of the stack are stopped since only the one at the top of the stack can contact thepickup roller 104. The document at the top of the stack is then transported to theretard pad 108 and under thepagination roller 102 by thepickup roller 104. - However, the conventional automatic document feeder described above indeed presents a problem which would harm the function of an image scanner. The problem is that the continuous fed documents are not separated well when the
pickup roller 104 picks up and sends more than one document sheet once. That is, more than two document sheets are transported to theretard pad 108 and under thepagination roller 102 usually. The excess fed document sheets undoubtedly would impede the normal operation the whole machine since the excess fed document sheets could hinder the feeding of the following document sheets or jam in the automatic document feeder. Therefore, it is desirable to provide an automatic document-feeding apparatus with superior capability of document pagination to overcome the problem of the prior art. - It is therefore an object of the invention to provide an automatic document-feeding apparatus with superior capability of document pagination.
- It is another object of this invention to provide a reliable automatic document-feeding apparatus.
- To achieve these objects, and in accordance with the purpose of the invention, the invention provide an automatic document-feeding apparatus with superior capability of document pagination. In one embodiment of this invention, the apparatus comprises means for picking up and transporting document sheets, means for separating document sheets into a sequence of transportation, and means for pressing document sheets. The means for picking up and transporting document sheets contact and transport document sheets and the means for separating document sheets comprise an incline plane used to receive and support the document sheet being transported from the means for picking up and transporting document sheets. The means for pressing document sheets press the document sheets to keep the document sheets and the incline plane in tight contact.
- In another embodiment of this invention, the automatic document-feeding apparatus of this invention comprises means for picking up document sheets, means for separating document sheets into a sequence of transportation, means for pressing document sheets, and means for transporting document sheets. The means for picking up document sheets contact and pick up document sheets and the means for separating document sheets comprise an incline plane used to receive and support the document sheet being transported from the means for picking up document sheets. The means for pressing document sheets press the document sheets to keep the document sheets and the incline plane in tight contact and the means for transporting document sheets receive and transport the document sheets being transported from the means for separating document sheets.
- It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
- The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same becomes better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
- FIG. 1 shows the basic structure of a conventional automatic document feeder; and
- FIG. 2 shows an automatic document-feeding apparatus of this invention.
- It is to be understood and appreciated that the apparatus described below do not cover a complete system. The present invention can be practiced in conjunction with various hardware that are used in the art, and only so much of the commonly practiced components and steps are included herein as are necessary to provide an understanding of the present invention.
- The present invention will be described in detail with reference to the accompanying drawings. It should be noted that the drawings are in greatly simplified form.
- Referring to FIG. 2, an automatic document-feeding apparatus200 of this invention is shown. In one embodiment of this invention, the automatic document-feeding apparatus 200 comprises means for picking up and transporting document sheets, means for separating document sheets into a sequence of transportation and means for pressing document sheets comprising a
pressing plate 212. The means for picking up and transporting document sheets compriserollers rollers roller 204 comprising a rubber roller is used to contact, pick up and drive the top sheet of a stack ofdocument sheets 210. Theroller 202 comprising a rubber roller is used to transport the document sheet from theroller 204 to the scanning area of an image scanner. Theroller pad 208 as well as a plurality ofspring 206 pushing the supportingpad 208 against to theroller 202. Thepressing plate 212 provides thedocument sheets 210 with a downward pressing force so that thedocument sheets 210 can be pressed and the front edges of thedocument sheets 210 can keep a tight contact with the supportingpad 208. Thepressing plate 212 can be pivoted on apivot 205 which is also the pivot of theroller 204. Thepressing plate 212 can also be mounted somewhere else. The supportingpad 208 preferably comprises anincline plane 208 a and acave surface 208 b. Theincline plane 208 a provides thedocument sheets 210 with an upward pushing force and a separating force so that the top one of thedocument sheets 210 can keep a tight contact with thepressing plate 212 and thedocument sheets 210 can be separated into a sequence of transportation while theroller 204 rolls. Thecave surface 208 b provides thedocument sheet 210 being transported with a support so that thedocument sheet 210 can contact with theroller 202 tightly. Thecave surface 208 b contacts theroller 202 while no document sheet is inserted therebetween so as to provide thedocument sheet 210 with a friction force. Thesprings 206 support and push the supportingpad 208. - Other embodiments of the invention will appear to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples to be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/132,158 US20030201595A1 (en) | 2002-04-26 | 2002-04-26 | Automatic document-feeding apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/132,158 US20030201595A1 (en) | 2002-04-26 | 2002-04-26 | Automatic document-feeding apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030201595A1 true US20030201595A1 (en) | 2003-10-30 |
Family
ID=29248701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/132,158 Abandoned US20030201595A1 (en) | 2002-04-26 | 2002-04-26 | Automatic document-feeding apparatus |
Country Status (1)
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US (1) | US20030201595A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080224381A1 (en) * | 2005-09-13 | 2008-09-18 | Benq Corporation | Paper feeder enabling proper feeding alignment |
US20140103600A1 (en) * | 2012-10-11 | 2014-04-17 | Brother Kogyo Kabushiki Kaisha | Sheet feeding device |
-
2002
- 2002-04-26 US US10/132,158 patent/US20030201595A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080224381A1 (en) * | 2005-09-13 | 2008-09-18 | Benq Corporation | Paper feeder enabling proper feeding alignment |
US20140103600A1 (en) * | 2012-10-11 | 2014-04-17 | Brother Kogyo Kabushiki Kaisha | Sheet feeding device |
US8910931B2 (en) * | 2012-10-11 | 2014-12-16 | Brother Kogyo Kabushiki Kaisha | Sheet feeding device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: UMAX DATA SYSTEMS INC., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHIANG, SHU-YA;CHEN, BI-CHUN;REEL/FRAME:012840/0218 Effective date: 20020328 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: VEUTRON CORPORATION, TAIWAN Free format text: CHANGE OF NAME;ASSIGNOR:UMAX DATA SYSTEMS INC.;REEL/FRAME:016800/0203 Effective date: 20021029 |
|
AS | Assignment |
Owner name: TRANSPACIFIC IP, LTD.,TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VEUTRON CORPORATION;REEL/FRAME:017564/0747 Effective date: 20050706 Owner name: TRANSPACIFIC IP, LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VEUTRON CORPORATION;REEL/FRAME:017564/0747 Effective date: 20050706 |
|
AS | Assignment |
Owner name: TRANSPACIFIC SYSTEMS, LLC, DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TRANSPACIFIC IP LTD.;REEL/FRAME:023107/0267 Effective date: 20090618 Owner name: TRANSPACIFIC SYSTEMS, LLC,DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TRANSPACIFIC IP LTD.;REEL/FRAME:023107/0267 Effective date: 20090618 |