CN1893519A - Duplex automatic document feeding apparatus and a duplex document feeding method - Google Patents
Duplex automatic document feeding apparatus and a duplex document feeding method Download PDFInfo
- Publication number
- CN1893519A CN1893519A CN 200610094375 CN200610094375A CN1893519A CN 1893519 A CN1893519 A CN 1893519A CN 200610094375 CN200610094375 CN 200610094375 CN 200610094375 A CN200610094375 A CN 200610094375A CN 1893519 A CN1893519 A CN 1893519A
- Authority
- CN
- China
- Prior art keywords
- document
- feeding
- feeding path
- fetching unit
- image fetching
- 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.)
- Pending
Links
Images
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Conveyance By Endless Belt Conveyors (AREA)
Abstract
A duplex automatic document feeder includes a pickup roller, an image reading unit, and a discharge roller, and includes first, second, third, and fourth document feeding paths. When performing duplex scanning in the DADF, the document is fed from the pickup roller to the image reading unit through the second document feeding path, and then the document passes through the third document feeding path, which is a closed-loop feeding path, to reverse feed the document back to the image reading unit, so that both sides of the document are scanned. Next, the document is discharged by the discharge roller. When discharged, the front side of the document faces down corresponding to the document as stacked in a paper supply tray. Accordingly, an additional feeding path for rearrangement of the discharged document can be omitted, thereby improving duplex efficiency.
Description
Technical field
The present invention relates to a kind of two-sided document feeding method that is applied to copying machines, scanner, facsimile machine or multi-function device, and a kind of two-sided automatic document feed apparatus (duplex automatic documentfeeder, DADF).Particularly, the present invention relates to a kind of two-sided document feeding method and a kind of two-sided automatic document feed apparatus (DADF), wherein, to image fetching unit supply documentation page, make that the two sides of documentation page all can be by successive scanning by the direction of feed of counter-rotating document.
Background technology
The automatic document feed apparatus that is used for for example duplicating (ADF) can more than be fed into image fetching unit with a plurality of documentation pages continuously and lid that needn't the opening document dish is changed every page of document.In addition, two-sided ADF (DADF) supply documentation page is so that double-sided copying.
Fig. 1 schematically shows conventional DADF.With reference to Fig. 1, the single-sweep operation will be described at first.When document transducer 12 detects and confirm the existing of document D, pick up document D by pick-up roller 13.Document D is separated page by page by alignment roller (register roller) 14 and is fed into scan roller 16 by feed rolls 15.Pass through image fetching unit 19 in depression bar 18 by the document D pressurized in scan roller 16 feedings.In this operating period, comprise in document D under the situation of one page or multipage that the location-controlled of the page or leaf front end of document D is in scanning sensor 17.After image fetching unit 19 was read image on the document D, document D was discharged from roller 20 and discharges.Document D is read by image fetching unit 19 with respect to the image I in the front that is stacked on the state in the paper supply tray 11.Through behind the distributing roller 20, the front of document D faces down in document D.Put it briefly, during single-sweep as mentioned above, the document feeding path can be expressed as with reference to Fig. 1
Further, with reference to Fig. 1, the following duplex scanning that carries out is operated.Be stacked in the paper supply tray 11 document D with single-sweep in same mode through pick-up roller 13, alignment roller 14, feed rolls 15, scan roller 16 and image fetching unit 19.After document D was read by image fetching unit 19 with respect to the image I on the front that is stacked on the state in the paper supply tray 11, document D was through shutter member 22 and the distributing roller 20 of moving into one's husband's household upon marriage.Because the rear end of document D is controlled by door sensor 21, distributing roller 20 is in the predeterminated position counter-rotating, makes with the place ahead feeding document D in the opposite direction with it.Here, door shutter member 22 unidirectional rotations by axle.Be fed into distributing roller 20 and by a door shutter member 22 along with document D is reversed, dual sided sensor 23 perception document D also are fed into scan roller 16 by two-sided roller 24.The another side of document D is promptly read by image fetching unit 19 similarly with respect to the back side that is stacked on the state in the paper supply tray 11, and documentation page is fed to distributing roller 20 then.In brief, for duplex scanning, document D is in the following order by reference feeding path shown in Figure 1:
In the conventional DADF of Fig. 1, after finishing duplex scanning, the result of the relative single-sweep of document D page or leaf discharges with being reversed.In other words, document D faces down with respect to the back side that is stacked on the state in the paper supply tray 11, and positive towards last.Therefore, when duplicating a plurality of documentation page, the document that is discharged from piles up with opposite turn in sequence ground.Therefore, documentation page need be by the path from distributing roller 20
And resequence.By this process, document D can be as discharging in the ventricumbent mode in front in the single-sweep.Therefore, the document feeding path that is used for duplex scanning in the conventional DADF of Fig. 1 can be summarized as follows with reference to Fig. 1:
But the DADF with the routine of describing for example shown in Figure 1 can have following problem.At first, the length in entire document feeding path can reduce two-sided efficient.Two-sided efficient can be represented by { single face feeding required time (single face feeding time)/two-sided feeding required time (two-sided time) } (2) (100%).The two-sided efficient of this routine DADF can not surpass 70% usually.In this respect, because duplex scanning requires the order of extra document feeding operation with rearrangement row document D, two-sided efficient can be lower, also causes energy and waste of time.
The second, in the DADF about shown in Figure 1 and the routine described for example, for example depend on the wearing and tearing of the roller that can cause because of the document feeding operation useful life of used all kinds of rollers usually in the duplex scanning.The long relatively document feeding path of conventional DADF can increase the frequency of utilization of roller, thus the useful life of reducing DADF.
The 3rd, in the DADF about shown in Figure 1 and the routine described for example, for duplex scanning, distributing roller 20 requires two-way rotation usually, therefore, must use two-way motor rotating (not shown) to drive distributing roller 20 usually.This two-way electric rotating machine is relatively costly and complicated usually.In addition, the slippage that can produce documentation page in direction of rotation moment of conversion distributing roller 20, thus can reduce the precision of document feeding operation.
In order to improve two-sided efficient, introduce the DADF of two image fetching units of a kind of employing.But, although improve two-sided efficient, considering the manufacturing cost that it is high relatively, the DADF with two image fetching units is unsatisfactory usually.In addition, in the DADF that adopts two image fetching units, need high-speed image processor usually, be used for handling simultaneously data streams read, thereby further improve manufacturing cost.
Summary of the invention
The present invention is above-mentioned and/or other problem or the inferior position that promotes to solve in two-sided feeding and the scan operation, and promotes to provide various advantages.Therefore, one aspect of the present invention provides a kind of two-sided document feeding method, promotes to improve the two-sided feeding efficient when carrying out duplex scanning; And a kind of two-sided automatic document feed apparatus (DADF), promote to improve the two-sided feeding efficient when carrying out duplex scanning.
For realizing above-mentioned and/or others of the present invention, providing a kind of comprises: pick up the pick-up roller that is stacked on the document in the paper supply tray with feeding, the image fetching unit of scanning document image, and the two-sided automatic document feed apparatus (DADF) of discharging the distributing roller of institute's scanned document, described DADF comprises: first or inlet document feeding path, and the document that picks up by described pick-up roller by described inlet document feeding path feeding; Be connected to the clearing end in the described first document feeding path and extend to described image fetching unit second or connect the document feeding path; Form the 4th or feed reversing document feeding path of closed-loop path, by described feed reversing document feeding path, when carrying out the duplex scanning of document, if the one side of document by described image fetching unit scanning, then arrives described document feed reversing the another side of described image fetching unit with scanned document; And the 5th or duplex scanning discharge the document feeding path, when the two sides of document is all scanned via described image fetching unit, described document is fed into described distributing roller by described discharge document feeding path, wherein, under the state that up one side is discharged by facing down when document is stacked in the described paper supply tray, discharge described document by described distributing roller, thereby the order corresponding order when being stacked in the described paper supply tray with described document is arranged described document.
According to a further aspect in the invention, behind single-sweep, document by the described the 4th or feed reversing document feeding path be fed into described image fetching unit when carrying out duplex scanning, subsequently with described document by described second or the direction of opposite or change when connecting the document feeding path and being fed into described image fetching unit on the described document of feeding.The described the 5th or duplex scanning discharge the document feeding path at the part place of feed reversing document and described second or be connected the document feeding path and overlap.
In another aspect of this invention, described DADF can further comprise: when carrying out single-sweep, if only the one side of document scans via described image fetching unit, described document feeding is discharged the document feeding path to the 3rd or single-sweep of described distributing roller.
In another aspect of this invention, described DADF can further comprise: be positioned at the described the 3rd or single-sweep discharge the document feeding path and the described the 4th or the position of meeting, feed reversing document feeding path near changes direction end spare, during single-sweep, after described document has passed through described image fetching unit, described changes direction end spare optionally is directed to described distributing roller with described document, and during carrying out duplex scanning, after described document had passed through described image fetching unit, described changes direction end spare optionally guided described document to make it enter the described the 4th or oppositely in the document feeding path.
According to another embodiment of the present invention and the aspect, providing a kind of comprises: pick up the pick-up roller that is stacked on the document in the paper supply tray with feeding, the image fetching unit of scanning document image, and the two-sided automatic document feed apparatus (DADF) of discharging the distributing roller of institute's scanned document, described DADF comprises: second or duplex scanning inlet document feeding path, by described duplex scanning inlet document feeding path document is fed into described image fetching unit to scan the one side of described document from described pick-up roller; Form the 3rd or feed reversing document feeding path of closed-loop path, by described feed reversing document feeding path, one side is fed into the another side of described image fetching unit with scanned document once more by the described document of described image fetching unit scanning; The and the 4th or discharge the document feeding path, the described document that the two sides all is scanned is fed into described distributing roller by described discharge document feeding path from described image fetching unit, wherein, when document is stacked in the described paper supply tray under up the ventricumbent state of one side, discharge described document by described distributing roller, thereby the order corresponding order when being stacked in the described paper supply tray with described document is arranged described document.
According to a further aspect in the invention, when carrying out duplex scanning, at first scan the back side of described document when being stacked in the described paper supply tray via described image fetching unit.In addition, when carrying out single-sweep, described DADF can further comprise: first or single-sweep inlet document feeding path, and described document is fed into described image fetching unit from described pick-up roller by described single-sweep document feeding path.
According to a further aspect in the invention or embodiment, described pick-up roller and the described distributing roller described document of feeding in one direction only.In addition, described second or duplex scanning inlet document feeding path, the described the 3rd or feed reversing document feeding path, and the described the 4th or discharge the document feeding path and comprise at least one document feeding roller, and the described document feeding roller described document of feeding in one direction only.
In another aspect of this invention, described DADF can further comprise: be positioned near the first direction converting member of described image fetching unit, so that when carrying out single-sweep, make described document through described pick-up roller enter described first or single-sweep inlet document feeding path in, and when carrying out duplex scanning, make described document through described pick-up roller enter described second or duplex scanning inlet document feeding path in.
In another aspect of this invention, described DADF can further comprise: be positioned at described first or single-sweep inlet document feeding path and the described the 3rd or the position of meeting, feed reversing document feeding path near the second direction converting member, thus when single-sweep, the document that guiding is fed into described image fetching unit makes it pass through described first or single-sweep inlet document feeding path, and when duplex scanning, document through described second or duplex scanning inlet document feeding path after, one side is entered the described the 3rd or oppositely in the document feeding path by the document guiding of described image fetching unit scanning.
In another aspect of this invention, provide a kind of two-sided document feeding method, comprising: first feeding operation, the document feeding that will pick up by pick-up roller to image fetching unit to scan the one side of described document; Second feeding operation, counter-rotating document feeding direction, the described document that then will one side have scanned by described first feeding operation is the described image fetching unit of feeding once more, to scan the another side of described document; And the 3rd feeding operation, with the two sides all through scanning described document feeding to distributing roller, wherein in described two-sided file scanning method, do not comprise with the image read operation incoherent with the described extra document feeding operation that is discharged from the order of document by the preoperative document order rearrangement of described first feeding.
Although describe the present invention according to file scanning and DADF, in practice of the present invention and using, except the paper mold medium, the present invention and aspect thereof also can be applicable to be suitable for other medium, device or the method for single face and/or duplex scanning, for example film type medium or other media type that is suitable for scanning.Therefore, the document that relates to here also can be corresponding to other suitable medium, relates to related device or feeding path that various document feedings path among DADF and the DADF also can be applicable to other suitable media of single face and duplex scanning.
Additional aspects of the present invention and/or advantage are explained or obvious or acquistion from the practice of the present invention from describe in the following description.
Description of drawings
These and/or others of the present invention can be by connection with figures the following description of embodiment become obvious and be easier to and understand, wherein:
Fig. 1 is the schematic views that conventional two-sided automatic document feed apparatus (DADF) is shown;
Fig. 2 is the schematic views according to the DADF of the first embodiment of the present invention;
Fig. 3 is the schematic views of DADF according to a second embodiment of the present invention;
Fig. 4 is the schematic views of the DADF of a third embodiment in accordance with the invention;
Fig. 5 is the schematic views of the DADF of a fourth embodiment in accordance with the invention;
Fig. 6 is the view that is illustrated in the document feeding path when carrying out single-sweep among the DADF of Fig. 5;
Fig. 7 is the view that is illustrated in the document feeding path when carrying out duplex scanning among the DADF of Fig. 5.
Embodiment
Now provide embodiments of the invention, in detail with reference to the accompanying drawings shown in example, identical reference number is represented components identical in the wherein whole explanation.Below in order to explain the present invention, by describing embodiment with reference to the accompanying drawings, well-known function and structure then needn't be described in detail.
Fig. 2 illustrates the two-sided automatic document feed apparatus (DADF) 100 according to the first embodiment of the present invention.DADF 100 comprises 130, the four document feeding paths 140,120, the three document feeding paths, 110, the second document feeding path, the first document feeding path and the 5th document feeding path 150.
Among Fig. 2, first or the path of inlet document feeding path 110 document D that to be feedings picked up by pick-up roller 102.The page up of pick-up roller 102 separating piled document D in paper supply tray 101.113 perception of document transducer are stacked on the document D in the paper supply tray 101.Alignment roller 111 difference feedings are by every page of document D of pick-up roller 102 feedings, the front end of alignment document D.The auxiliary continuous feed of document D along the document feeding direction that provide is provided alignment feed rolls 112.In addition, if the document feeding part between alignment roller 111 and the scanning feed rolls 121 is shorter, alignment feed rolls 112 can omit.
Further, among Fig. 2, second or connect document feeding path 120 and be connected to the clearing end in the first document feeding path 110, and extend to image fetching unit 104, make that the document D through the first document feeding path 110 is fed to image fetching unit 104.Near the clearing end in the first document feeding path 110 or its, form first shutter member (gate shutter) 114.When carrying out single-sweep, door shutter member 114 is directed to the second document feeding path 120 with document D from the first document feeding path 110.When carrying out duplex scanning, first shutter member 114 will need two sides scanning, once more through image fetching unit 104 and along the document D of the second document feeding path, 120 feed reversings be directed to the 5th or duplex scanning discharge document feeding path 150.
Continuation is with reference to Fig. 2, and scanning feed rolls 121 is pushed to image fetching unit 104 with document D.The document D that scanning sensor 123 perception enter image fetching unit 104.When carrying out duplex scanning, the direction of feed of the document D of image fetching unit 104 has been passed through in 121 counter-rotatings of scanning feed rolls, thereby document D is fed into the 5th document feeding path 150 from the second document feeding path 120.Therefore, scan roller 121 can two-wayly be rotated usually.Image fetching unit 104 is read the also analog image information of digitlization document D.In this respect, image fetching unit 104 comprises imageing sensor, for example charge coupled device (CCD) and contact image sensor (CIS).Depression bar 105 makes document D towards image fetching unit 104 bias voltages.
In DADF 100, the 3rd or single-sweep to discharge document feeding path 130 be to be used for will being fed into the path of exit roller 103 by the document D of image fetching unit 104 scanned documents one side by the 3rd document feeding path 130.When carrying out single-sweep, document D is discharged through the 3rd document feeding path 130.Door sensor 133 perception are through the document D in image fetching unit 104 laggard the giving.In addition, in the part between image fetching unit 104 and distributing roller 103, can add special-purpose feed rolls.Exit roller 103 document D the most at last is discharged on the discharge paper pallet (not shown).
In addition, in DADF 100, the 4th or feed reversing document feeding path 140 as the document feeding path of telling from the 3rd document feeding path 130, closed-loop path, be positioned near the door sensor 133 on the 3rd document feeding path 130.The position of meeting with respect to the 3rd document feeding path 130 and the 4th document feeding path 140, second shutter member 161 is arranged in relatively more near the 3rd document feeding path of image fetching unit 104, and the 3rd shutter member 162 then is positioned at relatively near the 3rd document feeding path 130 of image fetching unit 104.
Among Fig. 2, second shutter member 161 will be during single-sweep be directed to the 3rd document feeding path 130 through the document D of image fetching unit 104, and during duplex scanning document D drawn go back to the 3rd document feeding path 130 from the 4th document feeding path 140.According to an aspect of the present invention, the 3rd shutter member 162 is as changes direction end spare.The provider is not to conversion usually for first and second shutter member 114 and 161, and the 3rd shutter member 162 provides the direction that changes direction conversion, to change the feeding path of document D.In this respect, the 3rd shutter member 162 can be transformed into its direction position A ' and B ', shown in the four-headed arrow of Fig. 2.When carrying out single-sweep, the 3rd shutter member 162 is positioned on the A ' of position, so that document D is not through but entering the 4th document feeding path 140.On the other hand, when carrying out duplex scanning, the 3rd shutter member 162 is transformed into position B ', thereby the document D that makes one side be scanned enters the 4th document feeding path 140.
Continuation is with reference to Fig. 2, and by the 4th document feeding path 140 as the path, closed-loop path, the document D that one side is scanned is overturn 180 ° for the scanning another side.The 4th document feeding path 140 comprises the first two-sided feed rolls 141, with feeding document D in one direction.
In addition, in Fig. 2, the 5th or duplex scanning discharge the clearing end that document feeding path 150 is connected to the second document feeding path 120, with the feeding two sides all by the document D of the 4th document feeding path 140 scannings, until exit roller 103.Be used for the two-sided perceptron 153 that the perception document D enters and be used for being positioned at the second two-sided feed rolls 151 that document D is fed into exit roller 103 on the 5th document feeding path 150 or being adjacent.Between the clearing end in the image fetching unit 104 and the first document feeding path 110, overlap in the 5th document feeding path 150 and the second document feeding path 120.
With reference to Fig. 2 the duplex scanning of DADF 100 according to an aspect of the present invention and the two-sided document feeding method of operation are described.For single-sweep, the operation of single-sweep is similar to conventional ADF to the document feeding path.When the existing of document transducer 113 perception document D, pick-up roller 102 picks up the document D that is stacked in the paper supply tray 101.The document D of being picked up is fed into image fetching unit 104 by the first and second document feeding paths 110 and 120.After image fetching unit 104 was read image on the document D, document D was discharged by the 3rd document feeding path 130 by exit roller 103.For single-sweep, the 3rd shutter member 162 is positioned on the A ' of position.
So, in DADF 100, the document feeding path of single-sweep can be expressed as with reference to Fig. 2
During single-sweep, image fetching unit 104 is read the supine image in the front of the document D when being stacked in the paper supply tray 101.When document D process exit roller 103, the front of document D faces down.The document D back side up can at first be scanned by image fetching unit 104 when perhaps, being stacked in the paper supply tray 101.
The method and the operation of the two-sided file scanning among the DADF 100 according to an aspect of the present invention now will be described.104 document feeding class of paths is similar to the feeding path the process of single-sweep from pick-up roller 102 to image fetching unit.In other words, document D is fed into image fetching unit 104 through the first and second document feeding paths 110 and 120, and the one side of document D is scanned (first feeding operation) during this period.
Two-sided document feeding method that is used for scanning in DADF 100 and operation, the 3rd shutter member 162 is transformed into position B '.Therefore, the document D that simultaneously is scanned can enter the 4th document feeding path 140 by the 3rd shutter member 162.Document D is positioned at second shutter member 161 by the position of the second document feeding path, 120 feeding document D through the first two-sided feed rolls 141, and image fetching unit 104 (second feeding operation).Because document D is overturn by the 4th document feeding path 140, so the another side of document D, promptly the back side can be scanned by image fetching unit 104.
Continuation is with reference to Fig. 2, and the document D that the two sides all is scanned is fed to exit roller 103 and is discharged to the outside of DADF 100 (the 3rd feeding operation).Particularly, the document D that has been scanned of another side be reversed ground or with side in the opposite direction upper edge second document feeding path 120 feedings (four feeding operation) of the first feeding operating period document D through the second document feeding path 120.In other words, document D is positioned to by the 5th document feeding path 150 feeding document D through overscanning feed rolls 121 and first shutter member 114, and discharges by the second two-sided feed rolls 151 and exit roller 103.
When carrying out duplex scanning in DADF 100, document D is through first to the 5th document feeding path 110 to 150, as previously mentioned.The document feeding path that is used for duplex scanning in the DADF 100 can be shown with reference to Fig. 2 conclusive table
When carrying out duplex scanning, when document D is stacked in the paper supply tray 101 with document D thus up the front now down form be discharged from, so that document D corresponding order when being stacked on paper supply tray 101 with document D is arranged.Perhaps, up the back side can be discharged down when document D was stacked in the paper supply tray 101, thereby the respective sequence when being stacked in the paper supply tray 101 with document D is arranged document D.
Fig. 3 illustrates DADF 100 ' according to a second embodiment of the present invention.In the DADF 100 ' of Fig. 3, when carrying out single-sweep, first shutter member 114 is directed to the second document feeding path 120 with document D from the first document feeding path 110.When carrying out duplex scanning, first shutter member 114 all will be scanned the two sides, be directed to the 5th or discharge document feeding path 150 through image fetching unit 104 and along the document D of the second document feeding path, 120 feed reversings once more.But, compare with the first embodiment DADF 100, among the second embodiment DADF 100 ', the 3rd shutter member 162 and the place-exchange of second shutter member 161 in the 3rd document feeding path 130.The DADF100 of similar Fig. 2, among the DADF 100 ', second shutter member 161 will be during single-sweep be directed to the 3rd document feeding path 130 through the document D of image fetching unit 104, and during duplex scanning document D drawn go back to the 3rd document feeding path 130 from the 4th document feeding path.The direction of feed of document D is opposite with document D direction of feed in DADF 100 in the 4th document feeding path 140.The single face among the DADF 100 ' and the process of duplex scanning and operation are with as described below.
During the single-sweep in DADF 100 ', similar among document feeding path and the DADF 100, can be summarized as with reference to Fig. 3
In DADF 100 ', during the single-sweep, the 3rd shutter member 162 is positioned at position C '.Similar DADF 100, the 3rd interior shutter member 162 of DADF 100 ' provides the direction that changes direction conversion, to change the direction of feed of document D.
When carrying out duplex scanning in DADF 100 ', the 3rd shutter member 162 is transformed into position D ', makes the document D that one side has been scanned by image fetching unit 104 to enter the 4th document feeding path 140 by the 3rd shutter member 162.During through the first two-sided feed rolls 141,180 ° of document D upsets are with feed reversing in the second document feeding path 120.When document D through being positioned at the document D feed reversing by the second document feeding path 120 and once more during second shutter member 161 of the position by image fetching unit 104, the another side of document D is scanned.In the mode identical with the embodiment of DADF 100, document D is through the second and the 5th document feeding path 120 and 150, and distributing roller 103 and being discharged from.
So, in process when carrying out duplex scanning in the DADF 100 ' of Fig. 3 and the operation, the document feeding path can be summarized as:
In the second embodiment DADF 100 ', as DADF 100, when carrying out duplex scanning, discharged with facing down in up front when document D was stacked in the paper supply tray 101, thereby the respective sequence when being stacked in the paper supply tray 101 with document D is arranged document D.Perhaps, up the back side can be discharged down when document D was stacked in the paper supply tray 101, thereby the respective sequence when being stacked in the paper supply tray 101 with document D is arranged document D.
Fig. 4 illustrates the DADF 100 of a third embodiment in accordance with the invention ".At DADF 100 " in, when carrying out single-sweep, first shutter member 114 is directed to the second document feeding path 120 with document D from the first document feeding path 110.When carrying out duplex scanning, be similar to 114, the first shutter member 114 of first shutter member among the DADF 100 and 100 ' will need two sides scanning, be directed to the 5th or discharge document feeding path 150 through image fetching unit 104 and along the document D of the second document feeding path, 120 feed reversings once more.
Continuation is with reference to DADF 100 ", can change its position and be installed on the 3rd document feeding path 130 or be adjacent with the 4th and the 5th shutter member 165 and 166 of guiding document D.First to the 5th document feeding path 110 to 150 is similar to first to the 5th document feeding path 110 to 150 of DADF 100 and the DADF 100 ' of first and second embodiment, and DADF 100, and " the interior single face and the document feeding path of duplex scanning can be determined according to the setting or the position of two door shutter member 165 and 166.At DADF100 " in; according to the position of door shutter member and document D direction; in the 4th and the 5th shutter member 165 and 166; one will be during single-sweep be directed to 130, one in the 3rd document feeding path through the document D of image fetching unit 104 and during duplex scanning document D be drawn go back to the 3rd document feeding path 130 from the 4th document feeding path through the 4th document feeding path 140.In this respect, door shutter member 165 and 166 thereby play second shutter member 161 of DADF 100 or 100 ' or the effect of the 3rd shutter member 162 respectively, and door in the shutter member 165 and 166 plays the provider to the effect of conversion with the 3rd shutter member 162 changing direction, to change the feeding path of document D according to the direction through the document D in the 4th document feeding path 140.
Continuation is with reference to DADF 100 ", when carrying out single-sweep, the 4th and the 5th shutter member 165 and 166 lays respectively on the position C ' and A ' among Fig. 4." the document feeding path of interior single-sweep is identical with aforementioned three previous embodiment about DADF 100 and DADF 100 ' to be used for DADF 100.
But, DADF 100 " in, during duplex scanning, when the 4th shutter member 165 is positioned at position D ' time; the 5th shutter member 166 is positioned at the position A ' of Fig. 4, the document feeding path of document D is with aforementioned identical about the DADF 100 ' among second embodiment as shown in Figure 3.Simultaneously, DADF 100 " in, during duplex scanning, when the 4th shutter member 165 is positioned at position C ' time, the 5th shutter member 166 is positioned at the position B ' of Fig. 4, and the document feeding path is identical with aforesaid DADF 100.
For the duplex scanning among the conventional DADF with single image reading unit shown in Figure 1 for example, document D is reversed feeding usually to pass through image fetching unit once more, so that reset the page or leaf order of putting document D.Yet, as mentioned above, DADF according to embodiments of the invention and aspect, for example DADF100, DADF 100 ' and DADF 100 "; can be for example under the control of controller conversion document feeding path with the another side of scanned document D; described controller is processor, microprocessor or the application-specific IC (ASIC) for having memory and software or program for example, is used to control DADF 100,110 ' and 100 " operation.Therefore, at DADF of the present invention, for example DADF 100, DADF 100 ' and DADF 100 " in, when document D is discharged by exit roller 103; up front faced down when document D was stacked in the paper supply tray 101, thereby the respective sequence when document D is stacked on paper supply tray 101 with document D is arranged.As mentioned above, perhaps, up the back side can be discharged down when document D was stacked in the paper supply tray 101, thereby the respective sequence when being stacked in the paper supply tray 101 with document D is arranged document D.Therefore, in DADF, the method according to this invention and operation do not need extra document feeding process or the extra structure document D to be discharged of resequencing.Therefore, according to the present invention, two-sided efficient, print speed and the useful life of DADF can improve.
Fig. 5 schematically shows the DADF 200 of a fourth embodiment in accordance with the invention.In first to the 3rd embodiment, for DADF 100, DADF 100 ' and DADF 100 ", when not only carrying out single-sweep but also carrying out duplex scanning, 104 single-sweep document feeding path is all the same from pick-up roller 102 to image fetching unit, as previously mentioned.But according to a further aspect in the invention, in the 4th embodiment DADF200,204 document feeding path is different when carrying out single-sweep and duplex scanning from pick-up roller 202 to image fetching unit.
Although as previously mentioned, the previous embodiment of the present invention of Fig. 2 to 4 adopts the door shutter member to be used for counter-rotating document feeding direction when the duplex scanning as changes direction end spare, DADF 200 adopts and comprises pressure roller 261 and 264 and the press member 263 and 266 of solenoid 262 and 265 respectively, with for example under control such as the processor with memory and software or program, microprocessor or application-specific IC controllers such as (ASIC), optionally pressure roller 261 and 264 is exerted pressure according to the signal of telecommunication, with the operation of control DADF 200.But door shutter member or other suitable steering mechanism also can be used among the DADF200 as changes direction end spare, optionally to change the document feeding path that is used for single-sweep and duplex scanning with aforementioned mode.As shown in Figure 5, first and second press member 263 and 266 make document D process during single-sweep, and reverse during duplex scanning or change document feeding direction or document feeding path.Particularly, when solenoid 262 and 265 work, pressure roller 161 and 164 bias voltage document D on direction of arrow E ' and F ', thereby counter-rotating or change document feeding direction or document feeding path.
Continuation is with reference to Fig. 5 to 7, comprises according to the DADF 200 of embodiments of the invention and aspect: first or single-sweep inlet document feeding path 210; Second or duplex scanning inlet document feeding path 220; The 3rd or feed reversing document feeding path 230; The and the 4th or discharge document feeding path 240.
In this respect, as shown in Figure 5, press member 263 as the first direction converting member adjacent to pick-up roller 202, wherein when carrying out single-sweep, press member 263 guiding makes it advance to first or single-sweep inlet document feeding path 210 through the document D of pick-up roller 202, and wherein when carrying out duplex scanning, press member 263 guiding make it advance to second or duplex scanning inlet document feeding path 220 through the document D of pick-up roller 202.In addition, as the second direction converting member, press member 266 is positioned at adjacent to first or single-sweep inlet document feeding path 210 and the 3rd or reflect into the position of meeting to document feeding path 230, wherein when carrying out single-sweep, press member 266 guiding by first or single-sweep inlet document feeding path 210 document D that is fed into image fetching unit 204 make it continue or discharge document feeding path 240 by the 4th, and when carrying out duplex scanning, in the one side of document D through second or 220 backs, duplex scanning inlet document feeding path and during by image fetching unit 204 scannings, press member 266 guiding document D make it advance to the 3rd or feed reversing document feeding path 230, so that by the another side of image fetching unit 204 scanned document D.
With reference to Fig. 5 and 6, the DADF 200 that is used for single-sweep of the present invention is shown.For the single-sweep among the DADF 200, as single-sweep inlet document feeding path, the first document feeding path 210 extends to image fetching unit 204 from pick-up roller 202.The first document feeding path 210 comprises alignment feed rolls 211 and the scanning feed rolls 212 that is used for the feeding document D.
Continuation illustrates the DADF of the present invention 200 that is used for duplex scanning with reference to Fig. 5 and 7.For the duplex scanning among the DADF 200, as duplex scanning inlet document feeding path, the second document feeding path 220 extends to image fetching unit 204 from pick-up roller 202.The first two-sided feed rolls 221 that is used for the feeding document D is installed in the second document feeding path 220.The press member 263 that is used to make the counter-rotating of document feeding direction or change into direction of arrow E ' is positioned near the first and second document feeding paths 210 and 220 positions of meeting, thereby the document D by pick-up roller 202 feedings is entered in the second document feeding path 220.
Further, with reference to Fig. 5 and 7, for the duplex scanning among the DADF 200 of the present invention, as counter-rotating feeding document feeding path, the 3rd document feeding path 230 is paths, closed-loop path of document D, thus, if the one side of document D is through image fetching unit 204 scannings, 180 ° of document D upsets in the 3rd document feeding path 230 subsequently, thus document D is fed into image fetching unit 204 once more and by the another side of image fetching unit 204 scanned document D.The 3rd document feeding path 230 comprises the second and second two-sided feed rolls 231 and 232.Shown in Fig. 5 to 7, the 3rd document feeding path 230 is overlapping with the first document feeding path 210 to the part of image fetching unit 204 from scanning feed rolls 212.Press member 266 is positioned near the image fetching unit 204, with will be through the direction of feed counter-rotating of the document D of the image fetching unit 204 on the second document feeding path 220 or change to direction of arrow F ', thereby document D is entered in the 3rd document feeding path 230.
Shown in Fig. 5 to 7, according to the present invention, in DADF 200, as discharging the document feeding path, the 4th document feeding path 240 from image fetching unit 204 extensions, and both had been used for single-sweep on the direction of distributing roller 203, be used for duplex scanning again.Document D by image fetching unit 204 scannings is fed into distributing roller 203 along the 4th document feeding path 240.Except with document D along 220 feedings of the second document feeding path so that the duplex scanning, in the 4th document feeding path 240, the first two-sided feed rolls 221 is also along the 4th document feeding path 240 feeding document D, as previously mentioned.
With reference to Fig. 6, single-sweep operation and document feeding path in the DADF 200 of a fourth embodiment in accordance with the invention are as described below.The document feeding class of paths that is used for single-sweep in the DADF 200 is similar to DADF 100,100 ' and 100 " in the document feeding path.Therefore, for the single-sweep in the DADF 200, be stacked on document D in the paper supply tray 201 through the first document feeding path 210, reading images is discharged by the 4th document feeding path 240 and by distributing roller 203 then via image fetching unit 204 scannings.During single-sweep, first and second press member 263 and 266 are not worked, thereby allow document D along the first document feeding path, 210 processes and along the second document feeding path, 220 processes.The document feeding path that is used for single-sweep in the DADF 200 can be summarized as with reference to Fig. 6
In single-sweep, according to the present invention, in the DADF 200, the front of the document D that paper supply tray 201 inner faces upwards pile up is scanned and reading images by image fetching unit 204.After single-sweep was finished, when document D was discharged from DADF 200, up front faced down when document D was stacked in the paper supply tray 201, thereby the respective sequence when document D is stacked on paper supply tray 201 with document D is arranged.Perhaps, up the back side can be discharged down when document D was stacked in the paper supply tray 201, thereby the respective sequence when being stacked in the paper supply tray 201 with document D is arranged document D.
With reference to Fig. 7, duplex scanning operation and document feeding path among the DADF 200 are as described below.During duplex scanning, send in the second document feeding path 220 by press member 263 by the document D that pick-up roller 202 picks up.During through the second document feeding path 220, image fetching unit 204 is the back side of scanned document D at first in document D.Through behind the image fetching unit 204, document D enters in the 3rd document feeding path 230 by press member 266.Behind the 3rd document feeding path 230, document D is passed through image fetching unit 204 once more.Because document D 180 ° of time upsets, the front of image fetching unit 204 scanned document D now through the 3rd document feeding path 230.Then, document D is discharged to the outside through the 4th document feeding path 240 and by distributing roller 203.The document feeding path that is used for duplex scanning in the DADF 200 can be summarized as with reference to Fig. 7
Similar DADF 100,100 ' and 100 ", in the operation of duplex scanning in DADF 200, discharged with facing down in up front when document D was stacked in the paper supply tray 101, thus the respective sequence arrangement document D when being stacked in the paper supply tray 101 with document D.In addition, as mentioned above, up the back side can be discharged down when document D was stacked in the paper supply tray 101, thereby the respective sequence when being stacked in the paper supply tray 101 with document D is arranged document D.Therefore, in the DADF200 of the fourth embodiment of the present invention, the extra document feeding operation of the order of the document D that do not need to be used to resequence, thus promote the raising of two-sided efficient and promotion time and power to save.In addition, according to the present invention, the frequency of utilization of roller can reduce in the DADF 200, thereby also promotes the DADF raising in useful life.
A fourth embodiment in accordance with the invention in DADF 200, is used for the unidirectional rotation of roller of feeding document D.Conventional DADF needs either-rotation motor usually, so as two-way rotation at least one of them feed rolls come duplex scanning.But according to the present invention, DADF 200 can carry out duplex scanning with the unidirectional drive motor, thereby promotes the simplification of manufacturing cost saving and promotion scan operation program.
To sum up, embodiments of the invention and each feature can help scan operation, and be as described below.
A favourable aspect of the present invention is that two-sided efficient can greatly improve owing to the entire document feeding path that is used for duplex scanning is shortened.In this respect, because document D is discharged by the front with facing down, document D does not need to be used to resequence the extra feeding in proper order of document D page or leaf.Therefore, can in DADF of the present invention, method and operation, save power and time.
Another favourable aspect of the present invention is the useful life that can improve DADF.Owing to depend on the wearing and tearing that the feeding operation causes the useful life of the various feed rolls in the DADF usually, thereby reduce the useful life that the frequency of utilization of feed rolls can improve DADF.
Another favourable aspect of the present invention is the simplification that promotes manufacturing cost saving and scan operation program.Owing to can realize with the unidirectional drive motor according to duplex scanning of the present invention, so can omit the bi-directional drive motor that is used for duplex scanning in the conventional DADF.In addition, the slippage of the document that produces when the direction of rotation of conventional DADF internal conversion roller can be avoided usually, thereby promotes the raising of document feeding performance accuracy.
Previous embodiment and advantage are exemplary and be not considered as limiting the present invention.In addition, the description of embodiments of the invention means indicative, and does not limit the scope of claim, and various other replacements, modification and distortion will be to those skilled in the art with obvious.Therefore, although illustrated and described some embodiment of the present invention, person of skill in the art will appreciate that and under situation about not deviating from, to make change embodiment by the principle of the present invention of claim and equivalent limited range thereof and spirit.
Claims (21)
1. two-sided automatic document feed apparatus, comprise: pick up the pick-up roller that is stacked on the document in the paper supply tray with feeding, the image fetching unit of scanning document image, and the distributing roller of discharging institute's scanned document, described two-sided automatic document feed apparatus also comprises:
Inlet document feeding path, the document that picks up by described pick-up roller by described inlet document feeding path feeding;
Connect the document feeding path, it is connected to the clearing end in described inlet document feeding path and extends to described image fetching unit;
Feed reversing document feeding path, it forms the closed-loop path, when carrying out the duplex scanning of document, if the one side of document is by described image fetching unit scanning, then, described document feed reversing is got back to the another side of described image fetching unit with scanned document by described feed reversing document feeding path; And
Duplex scanning is discharged the document feeding path, and when the two sides of document was all scanned via described image fetching unit, described duplex scanning was discharged the document feeding path described document feeding is arrived described distributing roller,
Wherein, when document is stacked in the described paper supply tray, under up the ventricumbent state of one side, discharge described document, thereby the order corresponding order when being stacked in the described paper supply tray with described document is arranged described document from described distributing roller.
2. two-sided automatic document feed apparatus according to claim 1, wherein, when document is fed into described image fetching unit when carrying out duplex scanning by described feed reversing document feeding path, with single-sweep the time described document feeding is gone up in the opposite direction to the side of described image fetching unit subsequently, described document is fed into described image fetching unit by described connection document feeding path.
3. two-sided automatic document feed apparatus according to claim 2, wherein, overlap with the described document feeding path that is connected at the part place of feed reversing document in described duplex scanning discharge document feeding path.
4. two-sided automatic document feed apparatus according to claim 3 wherein, further comprises:
Single-sweep is discharged the document feeding path, and when carrying out single-sweep, if only one side is via described image fetching unit scanning for document, then described single-sweep is discharged the document feeding path described document feeding is arrived described distributing roller.
5. two-sided automatic document feed apparatus according to claim 4 wherein, further comprises:
Changes direction end spare, described changes direction end spare are arranged to that to discharge the position of document feeding path and described feed reversing document feeding path meeting adjacent with described single-sweep,
Wherein, when carrying out single-sweep, after described document had passed through described image fetching unit, described changes direction end spare was directed to described single-sweep with described document and discharges the document feeding path, with described document feeding to described distributing roller, and,
When carrying out duplex scanning, after described document had passed through described image fetching unit, described changes direction end spare guided described document that it is entered in the described reverse document feeding path.
6. two-sided automatic document feed apparatus, comprise: pick up the pick-up roller that is stacked on the document in the paper supply tray with feeding, the image fetching unit of scanning document image, and the two-sided automatic document feed apparatus of discharging the distributing roller of institute's scanned document, described two-sided automatic document feed apparatus also comprises:
Duplex scanning inlet document feeding path is fed into described image fetching unit with document from described pick-up roller by described duplex scanning inlet document feeding path, at first to scan the one side of described document;
Feed reversing document feeding path, it forms the closed-loop path, when carrying out the duplex scanning of document, if the one side of document is by described image fetching unit scanning, then, described document feed reversing is got back to the another side of described image fetching unit with scanned document by described feed reversing document feeding path; And
Discharge the document feeding path, when the two sides of document is all scanned via described image fetching unit, described document be fed into described distributing roller by described discharge document feeding path,
Wherein, when document is stacked in the described paper supply tray, under up the ventricumbent state of one side, discharge described document, thereby the order corresponding order when being stacked in the described paper supply tray with described document is arranged described document from described distributing roller.
7. two-sided automatic document feed apparatus according to claim 6, wherein, the back side when document is stacked in the described paper supply tray is at first via described image fetching unit scanning.
8. two-sided automatic document feed apparatus according to claim 7 wherein, further comprises:
Single-sweep inlet document feeding path when carrying out single-sweep, is fed into described image fetching unit with described document from described pick-up roller by described single-sweep inlet document feeding path.
9. two-sided automatic document feed apparatus according to claim 6, wherein, described pick-up roller and described distributing roller be the described document of feeding in one direction only.
10. two-sided automatic document feed apparatus according to claim 6, wherein, described duplex scanning inlet document feeding path, described feed reversing document feeding path and described discharge document feeding path comprise at least one document feeding roller, and the described document feeding roller described document of feeding in one direction only.
11. two-sided automatic document feed apparatus according to claim 10, wherein, overlap in described feed reversing document feeding path and single-sweep inlet document feeding path, described single-sweep inlet document feeding path is fed into described image fetching unit with described document from described pick-up roller when only carrying out single-sweep.
12. two-sided automatic document feed apparatus according to claim 11 wherein, further comprises:
Be arranged to the first direction converting member adjacent with described pick-up roller,
Wherein, when carrying out single-sweep, described first direction converting member guiding enters in the described single-sweep inlet document feeding path it through the described document of described pick-up roller, and
Wherein, when carrying out duplex scanning, described first direction converting member guiding enters in the described duplex scanning inlet document feeding path it through the described document of described pick-up roller.
13. two-sided automatic document feed apparatus according to claim 12 wherein, further comprises:
Be arranged to the adjacent second direction converting member in position of meeting with described single-sweep inlet document feeding path and described feed reversing document feeding path,
Wherein, when carrying out single-sweep, described second direction converting member guides the document that is fed into described image fetching unit by described single-sweep inlet document feeding path, and it is continued by described discharge document feeding path, and
Wherein, when carrying out duplex scanning, if the one side of described document is by described image fetching unit scanning after described document is through described duplex scanning inlet document feeding path, described second direction converting member guides described document that it is entered in the described reverse document feeding path, to be scanned the another side of described document by described image fetching unit.
14. document feeding and scan method comprise:
First feeding operation, the document feeding that will pick up by pick-up roller to image fetching unit to scan the one side of described document;
Second feeding operation, in the one side of document during by described first feeding operation scanning, the document feeding direction of reversing also is fed into described image fetching unit once more with described document, to scan the another side of described document; And
The 3rd feeding operation, when all being scanned on the two sides of described document, with described document feeding to distributing roller,
Wherein, do not comprise rearranging the described extra document feeding operation that is discharged from the order of document that the document feeding operation is uncorrelated with the image read operation.
15. document feeding and scan method comprise:
First feeding operation, the document feeding that will pick up by pick-up roller to image fetching unit to scan the one side of described document;
Second feeding operation, in the one side of document during by described first feeding operation scanning, the document feeding direction of reversing also is fed into described image fetching unit once more with described document, to scan the another side of described document; And
The 3rd feeding operation, when described file scanning has been finished, with described document feeding to distributing roller discharging described document,
Wherein, discharge described document, and do not comprise with the resequence extra document feeding operation of described document of described document order corresponding order during feeding in described first feeding operation.
16. method according to claim 15, wherein, in described first feeding operation from the described document of supplies trays feeding, and up one side was discharged from described distributing roller with facing down when described document was stacked in the described supplies trays, thereby the order corresponding order when being stacked in the described paper supply tray with described document is arranged described document.
17. method according to claim 15 wherein, further comprises:
When carrying out single-sweep, after the first feeding operation and document have passed through described image fetching unit,, optionally guide described document by changes direction end spare, with described document feeding to described distributing roller, and do not carry out described second feeding operation;
When carrying out duplex scanning, when the one side of described document has been operated the another side of scanning and described document to be scanned by described first feeding, by described changes direction end spare, optionally guide described document, so that counter-rotating document feeding direction also is fed into described image fetching unit once more with described document, thus in second feeding operation another side of the described document of scanning.
18. method according to claim 15 wherein, further comprises:
When carrying out single-sweep, after the first feeding operation and document have passed through described image fetching unit, optionally with described document feeding to described distributing roller, and do not carry out described second feeding operation.
When carrying out duplex scanning, when the one side of described document has scanned the another side of described document to be scanned by described first feeding operation, the document feeding direction of optionally reversing also is fed into described image fetching unit once more with described document, with the another side of the described document of scanning in second feeding operation.
19. method according to claim 15 wherein, when only carrying out single-sweep, is carried out described first feeding operation and described the 3rd feeding operation, and is not carried out described second feeding operation.
20. document feeding and scan method comprise:
First feeding operation, the document feeding that will pick up by pick-up roller to image fetching unit to scan the one side of described document;
Second feeding operation, in the one side of document when the another side of described document will be scanned by described first feeding operation scanning, counter-rotating document feeding direction also is fed into described image fetching unit once more with described document, to scan the another side of described document; And
The 3rd feeding operation, when described file scanning has been finished, with described document feeding to distributing roller discharging described document,
Described document in described first feeding operation during feeding up one side discharge from described distributing roller with facing down, thereby to arrange described document with described document order corresponding order during feeding in described first feeding operation.
21. method according to claim 20 wherein, when only carrying out single-sweep, is carried out described first feeding operation and described the 3rd feeding operation, and is not carried out described second feeding operation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR57271/05 | 2005-06-29 | ||
| KR20050057271 | 2005-06-29 | ||
| KR57279/05 | 2005-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1893519A true CN1893519A (en) | 2007-01-10 |
Family
ID=37598008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610094375 Pending CN1893519A (en) | 2005-06-29 | 2006-06-29 | Duplex automatic document feeding apparatus and a duplex document feeding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1893519A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547276B (en) * | 2008-03-25 | 2011-06-29 | 旭丽电子(广州)有限公司 | Automatic document feeding device |
| CN104512124A (en) * | 2013-10-02 | 2015-04-15 | 精工爱普生株式会社 | Medium transporting device and recording apparatus |
| CN110687762A (en) * | 2018-07-06 | 2020-01-14 | 佳能株式会社 | Sheet conveying apparatus, image reading apparatus, and image forming apparatus |
-
2006
- 2006-06-29 CN CN 200610094375 patent/CN1893519A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547276B (en) * | 2008-03-25 | 2011-06-29 | 旭丽电子(广州)有限公司 | Automatic document feeding device |
| CN104512124A (en) * | 2013-10-02 | 2015-04-15 | 精工爱普生株式会社 | Medium transporting device and recording apparatus |
| CN104512124B (en) * | 2013-10-02 | 2018-01-05 | 精工爱普生株式会社 | Medium conveying apparatus and tape deck |
| CN110687762A (en) * | 2018-07-06 | 2020-01-14 | 佳能株式会社 | Sheet conveying apparatus, image reading apparatus, and image forming apparatus |
| CN110687762B (en) * | 2018-07-06 | 2022-05-31 | 佳能株式会社 | Sheet conveying apparatus, image reading apparatus, and image forming apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1264067C (en) | Manuscript transfer device and image reading device | |
| CN1194272C (en) | Imaging device | |
| CN1229269C (en) | Paper feeder and automatic manuscript handling device with said feeder | |
| CN101309340B (en) | Image reading apparatus | |
| CN1212939C (en) | Paper sheet transfer appts. and image forming appts. | |
| CN1260105C (en) | Sheet delivering device and sheet follow-up processing device and forming device with these | |
| CN1831657A (en) | Sheet post-processing apparatus and image formation apparatus provided with the same | |
| US20070003344A1 (en) | Duplex automatic document feeding apparatus and a duplex document feeding method | |
| CN1524777A (en) | Paper loading conformity device, paper treatment device and image forming device | |
| CN1550439A (en) | Image forming apparatus | |
| CN1254423C (en) | Paper transport device and image reading device | |
| CN1272181C (en) | Paper conveyer mechanism using swinging gear and its controlling method | |
| US8064106B2 (en) | Document reading apparatus and related data transfer method | |
| KR101080422B1 (en) | Duplex document scanning apparatus and duplex document scanning method using the same | |
| JP2006232460A (en) | Document automatic feeder | |
| US20090251744A1 (en) | Auto document feeding device and image scanning device | |
| CN1792752A (en) | File feeding device and image reading device | |
| CN1925540A (en) | Image reading apparatus and copying apparatus | |
| CN1893519A (en) | Duplex automatic document feeding apparatus and a duplex document feeding method | |
| CN1941823A (en) | Auto document feeder, document feeding method and computer usable medium | |
| US6746013B2 (en) | Automatic document feeder | |
| CN1638418A (en) | Automatic document transportation device | |
| CN2502903Y (en) | Automatic shet conveying apparatus | |
| CN1816098A (en) | Image reading apparatus | |
| CN1268108C (en) | Automatic manuscript transfer device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |