1276541 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種雙面式 -種能有效避免超薄紙張在饋紙曲置之=於 動饋紙裝置。 曲之雙面式自 【先前技術】 白知之雙面掃描器，在掃描文件 i 置通常需要將文件翻轉二-欠， 、/、自動送紙裝 次。者文件當a s 亚且使文件通過掃描區= 當文件第二次通過掃播區的時：二二面：掃描。 文件第二二人通過掃描區時 田 動作。所以第三次的送紙動掃描 原始順序相同的排列順序所作的送紙動作。灰使到與 因此’每-次的掃描程序，都必須等 通過掃描區後才能繼婷鋏人丁 千弟二二人 羽“ ώ 績饋下—文件來進行掃描。it藉 二 =送紙裝置，浪費了許多不必要的等待時： 使侍知描動作無法快速被執行。 亏間 此外，為了順利翻轉紙張，文件饋 多分支通道’為了使文件之行進路徑具有單向 =支處設計彈性薄片，此彈性薄片可以被紙張朝= :=，Γ引朝相反於第一方向行進之紙張朝另 “進。於此情況τ，當紙張厚度過小使其剛 在二fl氏張無法推開彈性薄片，因此過薄之紙張可能卡 在、、中而產生挫曲（buckling)現象。 6 1276541 【發明内容】 因此，本發明之一個目的係提供一種雙面式自動饋 紙裝置，其能有效避免超薄紙張在饋紙通道中挫曲。 為達上述目的，本發明提供一種雙面式自動饋紙裝 置’其包含一進紙匣、一進紙機構、一第二通道、一第 二通道、一第四通道、一第五通道、一出紙匡、一導引 機構、一紙張偵測器及一饋紙機構。進紙匣用以存放複 數紙張。第一通道連接至進紙匣。進紙機構用以將複數 <1 紙張逐一饋送至第一通道中。第二通道連接至第一通道， 第二通道具有一影像處理區。第三通道連接至第二通道。 第四通道連接至第三通道與第二通道。第五通道連接至 第三通道。雙面式出紙匣連接至第五通道。導引機構位 於第三通道與第五通道之一連接處，用以導引紙張從第 二通道進入第五通道與否。紙張偵測器位於第三通道上， 用以偵測通過第三通道之紙張。饋紙機構用以將紙張從 第一通道依序饋送通過第二通道、第三通道、第四通道、 Φ 第二通道、第三通道及第五通道，然後進入出紙匣。 為讓本發明之上述目的、特徵、和優點能更明顯易 ‘ 懂’下文特舉一較佳實施例，並配合所附圖式，作詳細 說明如下。 式 方 施 實 圖1顯示依據本發明第一實施例之雙面式自動饋紙 裝置之示意圖。如圖1所示，本實施例之雙面式自動饋 紙裝置1包含一進紙匣10、一第一通道21(A至B)、一 7 1276541 進紙機構30、一第二通道 ? 23A) ^ 說 至C)、一第三通道23(c 至23A)、一弟四通道2 … μ庙m ^ 王、一弟五通道25、一屮 紙匣40、一導引機構5〇、— 出 '§ι! ^ ^ , 译生導引片52、一紙張伯 測器60及一饋紙機構7〇。 1貝 進紙匣10用以存放複 > t , 筑、、、氏張s，於本實施例中，畀 上方的紙張先被饋送。第_ 7例中最 ^ Μ ^ η Π m 、21連接至進紙匣1 〇。 二：3。用以將複數紙“逐一饋 :=Γ中，進紙機構3〇包含-拾紙滚輪3〗及 一組分紙滾輪3 2。 久 第二通道22連接至第—通道21 區22Α。於此實施例中，卑 ，、象处理 ㈣中’ #像處理區22Α為一掃描區， 通過此區之紙張(或稱文件、原稿)係被-光學模組90掃 描。於另-實施例中，影像處職22Α為—列印區，= 過此區之紙張係被一列印模組列印資料於其上。 第三通道23連接至第二通道22，俾使紙張能從第二 通道22進人第三通道23中。第四通道24連接至第三: 道23與第二通道22’俾使來自第三通道23之紙張二 進入第四通道24中，而無法進入第二通道22中。第五 通道25連接至第三通道23，俾使來自第三通道^之 張可以進入第五通道25中。 、、、 出紙匡40係連接至第五通道乃，用以存放經過掃描 之紙張。導引機構50係可擺動，並位於第三通道23 : 第五通道25之一連接處26，用以導引紙張s從第三通 道23進入第五通道25與否。彈性導引片52用以導引= 張S從第二通道23進入第四通道24，防止紙張s從第 8 1276541 三通道23進入笫-、3、* , 進入第三通道23=Γ並允許紙張s從第二通道22 紙張偵測器60位於第=通道Μ μ 用以偵測通過第=诵、# μ ^ ζ 禾一通道23上， 以是-種反射S°紙張侦測器6〇可 種反射式或透射式偵测器，藉由 來：測紙張之前緣或後緣是否已經通：苹;二Ϊ 位置，以作為饋送另一紙張之參考。 、某個特疋 饋紙機構70包含複數個滾輪71_79 式下，饋紙機構70用以將 、曾 ^模 送通過第二通道22、第=通道23 =通道21依序饋 通道H㈣at第^ Γ2 ^道I第二 出纸便4n a &第五通道25 ’然後進入雙面式 =〇。當紙張從第二通道22進入第三通道23時， :引片52會被紙張稍微推開，且導5丨機構5〇之狀 二如虛線輪廓所示。當紙張從第三通道23進人第四通道 時，導引機構50之狀態如虛線輪廓所示，且彈性導 引片52會貼緊連接處26。因此 性 :第導引紙…第三通道…四通道二I:: 從弟二通道23進入第五通道25時，導引機構5〇之狀態 係如實線輪廓所示。 一。。於本實施例中，第三通道23亦連接至出紙匣4〇。於 一早面掃描模式下，饋紙機構70更可將紙張s從第一通 道21依序饋送通過第二通道22及第三通道23，然後進 入出紙昆40。第三通道23之一出紙口 23A比第五通道25 之一出紙口 25A遠離出紙匣40。 圖2顯示依據本發明第二實施例之雙面式自動饋紙 袭置之不意圖。如圖2所示，本實施例之雙面式自動饋 1276541 紙裝置更包含一單面式出紙匣80,其連接至第三通道 23，用以於-單面模式下，將紙張s從第—通道21依= 饋送通過第二通道22及第三通冑23，然後進人單 出紙g 80。於本實施例中單面式出紙g 8〇高於出紙匠 40。如此一來，使用者可以依據文件或紙張放置的紙厘， 來確認文件或紙張是否已經受到所想要的單面或雙面處 值得注意的是彈性導引片52可以被一副導引機構（未 顯不)所代替’副導引機構類似於導引機構5〇而可擺動， 用以導5丨紙張S從第三通道23進人第四通道24， 以導引紙張S從第二通道22進入第三通道23。由於副 導引機構類似於導引機構5〇且其擺設位置與彈性導 52相同，故於此不另外緣製。 :外’為了節省連續饋送紙張的時間，在做第一紙 = 的掃描的情況下’當第-紙張之尾端從第四 =、24通過B點後，第二紙張就可以開始進紙而進入第 一通道2 1。 圖3顯示依據本發明第二每 裝置之示意圖。如圖3所^二例之雙面式自動饋紙 纸梦署1々入 本實施例之雙面式自動饋 紙裝置1包含一進紙匣1〇、— 進紙機構30、-第-通道以/ 一通道⑽至6)、- 至以）、-第四^ (至〇、—第三通道23(c 23A)第四通道尊至⑴、一第五通道25、 面式出紙匣40、一導引機、M 芰 饋紙機構70。 50、-紙張偵測器60及- 進紙匿1〇用以存放複數氧張S，於本實施例中，最 10 1276541 上方的紙張先被饋送。第一通道21連接至進紙匣1〇。 進紙機構30用以將複數紙張s逐一饋送至第一通道2ι 中。於本實施例中，進紙機構3〇包含一拾紙滾輪Η及 一組分紙滾輪32。 1 〜< 一 L J六为一影像處 22Α。於此實施例中，影像處理區22Α為一掃描區 揭丨th庶夕缸担，土必a 丨 — • ^ π w工以两一婦描區， 通過此區之紙張（或稱文件、原稿）係被一光學模组％栌 -描。於另一實施例中，影像處理區22Α&_列印區，: • 過此區之紙張係被一列印模組列印資料於其上。 、 ^三通道23_連接至第二通道22，俾使紙張能從第二 2入第二通道23中。第四通道24連接至第三通 ^ ”第一通道22，俾使來自第三 進…通…，而無法進入第二通道心張第可： 通道25連接至第三通道23，俾 張可以進入第五通道25中。 目弟-通道23之紙 雙面式出紙Ε 40係連接至第五通道& 過雙面掃描之紙張。導用/存放經 進入第五通…I纸=S從第三通道23 ,m 〇否、.代張偵洌器60位於第三诵、首ο 上，用以偵測通過第三通道23 一、、23 可以是-種反射式或透射式，貞測：張二=_“〇 線之光線來價測紙張之前緣或後緣是…出譬如紅外 定位置，以作為饋送另-紙張之參考疋否已經通過某個特 饋：_ 7。包含複數個滾輪71 式下，饋紙機構70用以將紙…第—通道;:= 11 1276541 送通過第二通道22、第三通道23、第四通道24、第一 通道22、第三通道23及第五通道25，然後進入雙面^ 出紙E 40。當紙張從第二通道進入第三通道時，導引機 構50之狀態係如位於上方之虛線輪廓所示。因此，導 機構50更可以用以導引紙張s從第二通道22進入第一 通道23。當紙張從第三通道進入第四通道時，導^機構 50之狀態係如位於下方之虛線輪廓所示。因此，導' * 構50可以用以導引紙張s從第三 機 運入弟四通道 24。虽紙張從第三通道進入第五通道時，導引機構 狀態係如實線輪廓所示。值得注意的是， ，斗Λ ^丨機構50可 以僅具有位於上方之虛線輪廓及實線輪廓所示之兩種狀1276541 IX. Description of the Invention: [Technical Field] The present invention relates to a double-sided type, which is capable of effectively preventing an ultra-thin paper from being fed in a paper feed. The double-sided version of the song [Prior Art] The double-sided scanner of Baizhi usually scans the file i to flip the file to the second-negative, /, automatic paper feed. The file is a s and the file is passed through the scan area = when the file passes through the scan area for the second time: two sides: scan. The second person of the document moves through the scanning area. Therefore, the third paper feed scans the paper feed action in the same order as the original order. The ash makes it and therefore the 'every-times scanning procedure must wait through the scanning area before the Ting 铗人丁千弟二二人羽" ώ 馈 馈 — 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 文件 = = = = = = = = = = There are a lot of unnecessary waiting times: the waiter can't be executed quickly. In addition, in order to smoothly flip the paper, the file feeds the multi-branch channel' in order to make the path of the document have a one-way = branch design elastic sheet, this The elastic sheet can be pushed toward the other by the paper facing = :=, Γ toward the paper traveling in the opposite direction. In this case, τ, when the thickness of the paper is too small, the elastic sheet cannot be pushed open immediately after the second sheet, so the too thin paper may be stuck in the middle, and buckling occurs. 6 1276541 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a double-sided automatic paper feeding device which can effectively prevent buckling of ultrathin paper in a paper feed passage. In order to achieve the above object, the present invention provides a double-sided automatic paper feeding device that includes a paper feed cassette, a paper feed mechanism, a second passage, a second passage, a fourth passage, a fifth passage, and a A paper output tray, a guiding mechanism, a paper detector and a paper feeding mechanism. The tray is used to store multiple sheets of paper. The first channel is connected to the tray. The paper feeding mechanism is used to feed the plurality of <1 sheets one by one into the first passage. The second channel is connected to the first channel, and the second channel has an image processing area. The third channel is connected to the second channel. The fourth channel is connected to the third channel and the second channel. The fifth channel is connected to the third channel. The duplex paper exit tray is connected to the fifth channel. The guiding mechanism is located at a connection between one of the third channel and the fifth channel to guide the paper from the second channel to the fifth channel or not. The paper detector is located on the third channel for detecting the paper passing through the third channel. The paper feeding mechanism is for feeding the paper sequentially from the first passage through the second passage, the third passage, the fourth passage, the Φ second passage, the third passage and the fifth passage, and then entering the discharge tray. The above described objects, features, and advantages of the present invention will become more apparent and <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; Embodiment 1 FIG. 1 is a schematic view showing a double-sided automatic paper feeding device according to a first embodiment of the present invention. As shown in FIG. 1, the double-sided automatic paper feeding device 1 of the embodiment comprises a paper feed cassette 10, a first passage 21 (A to B), a 7 1276541 paper feed mechanism 30, and a second passage 23A. ^ ^ to C), a third channel 23 (c to 23A), a younger four channels 2 ... μ temple m ^ Wang, a younger five channels 25, a stack of paper 40, a guiding mechanism 5 〇, - '§ι! ^ ^ , a translation guide 52, a paper detector 60 and a paper feeding mechanism 7〇. The 1st paper cassette 10 is used to store the complex > t, the building, the slab, and the slab. In this embodiment, the paper above the 畀 is fed first. In the seventh case, the most ^ Μ ^ η Π m , 21 is connected to the tray 1 〇. Two: 3. For feeding the plurality of papers one by one: = Γ, the paper feeding mechanism 3 〇 includes the pickup roller 3 and a group of paper rollers 3 2 . The second passage 22 is connected to the first passage 21 section 22 Α. In the embodiment, the image processing area 22 is a scanning area, and the paper (or document, original) passing through the area is scanned by the optical module 90. In another embodiment, The image is operated as 22-printing area, and the paper passing through this area is printed on it by a printing module. The third channel 23 is connected to the second channel 22 so that the paper can enter from the second channel 22 The third passage 23 is connected to the third passage 23. The passage 23 and the second passage 22' cause the sheet 2 from the third passage 23 to enter the fourth passage 24 and cannot enter the second passage 22. The fifth channel 25 is connected to the third channel 23 so that the sheet from the third channel can enter the fifth channel 25. The paper tray 40 is connected to the fifth channel for storing the scanned paper. The guiding mechanism 50 is swingable and located at the junction 23 of the third passage 23: the fifth passage 25 for guiding the paper s enters the fifth channel 25 from the third channel 23. The elastic guiding piece 52 is used to guide the sheet S from the second channel 23 into the fourth channel 24, preventing the paper s from entering the third channel 23 of the 8 1276541 - , 3, *, enter the third channel 23 = Γ and allow the paper s to pass from the second channel 22 The paper detector 60 is located at the = channel Μ μ for detecting the passage through the = 诵, # μ ^ 禾 禾, so that the reflective S° paper detector 6 can be used to reflect the transmissive or transmissive detector, by: measuring whether the leading or trailing edge of the paper has been passed: Ping; Reference to paper. A special paper feeding mechanism 70 includes a plurality of rollers 71_79. The paper feeding mechanism 70 is used to send and pass the second channel 22, the second channel 23 = the channel 21 and the sequential feeding channel. H (four) at ^ ^ Γ 2 ^ I second paper exit 4n a & fifth channel 25 ' then enter double-sided = 〇. When the paper enters the third channel 23 from the second channel 22, the leader 52 will be paper Push it slightly, and the shape of the 5丨 mechanism is as shown by the dotted outline. When the paper enters the fourth passage from the third passage 23, the guiding machine The state of 50 is as shown by the dashed outline, and the elastic guide piece 52 will be in close contact with the joint 26. Therefore, the first guide paper...the third passage...the four passages two I:: the second passage 23 from the second passage 23 enters the fifth passage 25 The state of the guiding mechanism 5 is as shown by the solid line outline. In the present embodiment, the third passage 23 is also connected to the paper exit tray 4. In the early scanning mode, the paper feeding mechanism 70 is further The paper s can be sequentially fed from the first passage 21 through the second passage 22 and the third passage 23, and then enters the paper exit 40. One of the third passages 23 has a paper discharge port 23A which is one of the discharge ports of the fifth passage 25. 25A is away from the paper tray 40. Fig. 2 is a view showing the double-sided automatic paper feeding according to the second embodiment of the present invention. As shown in FIG. 2, the double-sided automatic feed 1276541 paper device of the embodiment further comprises a single-sided paper output tray 80 connected to the third passage 23 for taking the paper s from the single-sided mode. The first passage 21 passes through the second passage 22 and the third passage 23, and then enters the single discharge g 80. In the present embodiment, the single-sided paper output g 8 is higher than the papermaker 40. In this way, the user can confirm whether the document or the paper has been subjected to the desired one-sided or double-sided position according to the paper or the paper placed on the paper. It is noted that the elastic guiding piece 52 can be guided by a pair of guiding mechanisms. (not shown) instead of the 'sub-guide mechanism similar to the guide mechanism 5 〇 can be swung to guide the 5 丨 paper S into the fourth passage 24 from the third passage 23 to guide the paper S from the second The passage 22 enters the third passage 23. Since the sub-guide mechanism is similar to the guide mechanism 5 and its position is the same as that of the elastic guide 52, it does not have a separate edge. : Outside 'To save time for continuous feeding of paper, in the case of scanning with the first paper = 'When the trailing end of the first paper passes from the fourth =, 24 through point B, the second paper can start feeding. Enter the first channel 2 1. Figure 3 shows a schematic view of a second device in accordance with the present invention. The double-sided automatic paper feeding device 1 of the embodiment shown in FIG. 3 includes a paper feed cassette 1 , a paper feeding mechanism 30, a first channel. / / channel (10) to 6), - to -, - fourth ^ (to 〇, - third channel 23 (c 23A) fourth channel to (1), a fifth channel 25, surface tray 40 a guiding machine, M 芰 paper feeding mechanism 70. 50, - paper detector 60 and - paper storage 1 〇 for storing a plurality of oxygen sheets S, in this embodiment, the paper above the top 10 1276541 is first Feeding. The first passage 21 is connected to the tray 1. The paper feeding mechanism 30 is for feeding the plurality of sheets s one by one into the first passage 2i. In the embodiment, the paper feeding mechanism 3 includes a pickup roller Η And a group of paper rollers 32. 1 ~ < One LJ six is an image at 22 Α. In this embodiment, the image processing area 22 is a scanning area to reveal the 庶 庶 缸 ,, soil must be a 丨 — • ^ The πw is divided into two sections, and the paper (or document, original) passing through the area is drawn by an optical module. In another embodiment, the image processing area 22Α&_printing area, : • The paper passing through this area is printed on it by a printing module. ^ The three channels 23_ are connected to the second channel 22 so that the paper can enter the second channel 23 from the second 2nd. 24 is connected to the third channel ^" first channel 22, so that the third channel can be accessed from the third channel, and the channel can be connected to the third channel 23, and the channel can enter the fifth channel. 25. Mister-channel 23 paper double-sided paper output Ε 40 series connected to the fifth channel & double-sided scanning paper. Guide / storage through the fifth pass... I paper = S from the third channel 23, m 〇 No, the Detective Detector 60 is located on the third 诵, the first ο, used to detect through the third channel 23, 23, can be a kind of reflective or transmissive, speculation: Zhang Er =_ "The light of the squall line is used to measure the leading edge or trailing edge of the paper.... For example, the infrared position is used as a reference for the feed-paper. 已经No has passed a special feed: _ 7. Contains a plurality of rollers 71 Next, the paper feeding mechanism 70 is configured to send the paper ... the first channel;: = 11 1276541 through the second channel 22, the third channel 23, the fourth channel 24, the first The channel 22, the third channel 23 and the fifth channel 25 are then entered into the double-sided e-paper E 40. When the paper enters the third channel from the second channel, the state of the guiding mechanism 50 is as shown by the dashed outline above. Therefore, the guiding mechanism 50 can be used to guide the paper s from the second passage 22 into the first passage 23. When the paper enters the fourth passage from the third passage, the state of the guiding mechanism 50 is as follows. As shown, the guide 50 can be used to guide the paper s from the third machine into the fourth channel 24. Although the paper enters the fifth passage from the third passage, the state of the guide mechanism is as shown by the solid line outline. It is worth noting that the bucket mechanism 50 can only have two shapes as shown by the dashed outline and the solid outline at the top.
態。:可料設料道之結構來使紙張從第三通 進入第四通道。 矛J 於本實施例中，第三通道23亦連接至雙 ’饋紙機構7°更可將:張3 第-通道21依序饋送通過第二通道22及第三 / 然後進入雙面式出紙£ 40。第三通道23之 ^ 比第五通道25之一出紙口 25α 出、，氏口 23Α 4 If - ^ ^ 雙面式出紙匣40。 圖4顯不依據本發明第 # W t示咅FI 1 @ 員轭例之雙面式自動饋紙 裝置之不思圖。如圖4所示， 置更包含實轭例之雙面式自動饋 二裝二，面式出紙"〇,其連接至第三通道 23,用以於-早面模式下 、 饋送通過第二通道22及第，弟-通道21依序 出紙1E 80。於本實施例中 、23’然後進入單面式 屮紙匣40。如士 ^ 式出紙匣80高於雙面式 出、，，氏匣 如此一來，使用者可以# μ + & J以依據文件或紙張放置 12 1276541 的紙匣，來確認文件或 或雙面處理。 紙張是否已經受到所想要 的單面 藉由本發明之雙面 k ^ ^ 工自動饋紙褒置’由於利用道？丨 機構來導引紙張之行谁t & 、利用導引 ^ 進方向，因此薄的紙張可以習state. : The structure of the material channel can be set to make the paper enter the fourth channel from the third pass. Spear J In this embodiment, the third passage 23 is also connected to the double 'feeding mechanism 7°. Further, the sheet 3 first passage 21 is sequentially fed through the second passage 22 and the third / then into the double-sided manner. Paper £40. The third passage 23 is higher than the discharge port 25α of the fifth passage 25, and the mouth 23 Α 4 If - ^ ^ is the double-sided output tray 40. Fig. 4 shows an alternative to the double-sided automatic paper feeding device of the first embodiment of the present invention. As shown in FIG. 4, a double-sided automatic feed two-piece two, a face-type paper output, is connected to the third channel 23 for use in the early-surface mode, and the feed is passed through The second channel 22 and the first, the brother-channel 21 sequentially discharge the paper 1E 80. In this embodiment, 23' then enters the single-sided crepe paper cassette 40. If the ^ 式 出 匣 高于 高于 高于 高于 高于 高于 高于 高于 高于 高于 高于 高于 高于 高于 高于 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣 匣Surface treatment. Whether the paper has been subjected to the desired single side by the double-sided k ^ ^ automatic paper feeding device of the present invention due to the use of the track?机构 The mechanism guides the paper trip who t & uses the guide to enter the direction, so the thin paper can be learned
知技術之挫曲現象。此外，π j以免除S 卜5又置兩個出紙匣，可以讓使 用者再次確認文件或紙张θ π α γ γ f 卞乂 Α張疋否已經受到他所想要的處 理，因此在使用上是相當便利且人性化的。 在較佳實施例之詳細說明中所提出之具體實施例僅Know the technology's setback phenomenon. In addition, π j eliminates S and then sets two paper exits, allowing the user to reconfirm whether the document or paper θ π α γ γ f has been processed as he wants, so It is quite convenient and user-friendly to use. The specific embodiments set forth in the detailed description of the preferred embodiment are only
用以方便說明本發明之技術内容，而非將本發明狹義地 限制於上述實施例，在不超出本發明之精神及以下申請 專利範圍之情況，所做之種種變化實施，皆屬於本發明 之範圍。 13 1276541 【圖式簡單說明】 圖1顯示依據本發明第一實施例之雙面式自動饋紙 裝置之示意圖。 圖2顯示依據本發明第二實施例之雙面式自動饋紙 裝置之示意圖。 圖3顯示依據本發明第三實施例之雙面式自動饋紙 ' 裝置之示意圖。 圖4顯示依據本發明第四實施例之雙面式自動饋紙 | 裝置之示意圖。 【主要元件符號說明】 S〜紙張 1〜雙面式自動饋紙裝置 10〜進紙匣 21〜第一通道 22〜第二通道 22A〜影像處理區 23〜第三通道 2 3 A〜出紙口 24〜第四通道 25〜第五通道 2 5 A〜出紙口 26〜連接處 30〜進紙機構 31〜拾紙滾輪 3 2〜分紙滾輪 40〜雙面式出紙匣 50〜導引機構 52〜彈性導引片 60〜紙張偵測器 80〜單面式出紙匣 70〜饋紙機構 14The present invention is not limited to the above embodiments, and various changes are made without departing from the spirit of the invention and the scope of the following claims. range. 13 1276541 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a double-sided automatic paper feeding device according to a first embodiment of the present invention. Fig. 2 is a view showing a double-sided automatic paper feeding device in accordance with a second embodiment of the present invention. Figure 3 is a schematic view showing a double-sided automatic paper feeding apparatus according to a third embodiment of the present invention. Figure 4 is a schematic view showing a double-sided automatic paper feeding device according to a fourth embodiment of the present invention. [Description of main component symbols] S~Paper 1~Double-sided automatic paper feeding device 10~Tray 21~First channel 22~Second channel 22A~Image processing area 23~3rd channel 2 3 A~Outlet port 24 to 4th channel 25 to 5th channel 2 5 A to paper exit 26 to joint 30 to paper feed mechanism 31 to pickup roller 3 2 to separation roller 40 to double-sided paper discharge cassette 50 to guide mechanism 52 to elastic guide piece 60 to paper detector 80 to single-sided paper output cassette 70 to paper feeding mechanism 14