201236880 六、發明說明： 【發明所屬之技術領域】 本發明係一種饋紙裝置，尤其係關於一種排除文件斜向進給 的饋紙裝置。 【先前技術】 由於現今自動饋紙裝置被廣泛地運用於印表機、影印機以及 存摺機上’其主要目的就是將文件饋送進入該機器内，以繼續完 成打印動作。然而，在饋送紙張的過程中有時會產生紙張歪斜的 情況，而此種紙張斜向進給的情況將導致機器之打印頭無法將資 料列印於文件上正確的位置。 有鑑於此，習知技術提出—種防止文件斜向進给的饋紙裝 置。請參閱圖1與圖2,圖1為習知饋紙裝置之結構側視圖，圖2 為圖1所示之饋紙裝置之部分結構示意圖。饋紙裝置丨包括上殼 "1下设體12、饋紙通道13、饋紙滾輪14、饋紙滾軸15、複 數擋，氏# 16、擋紙滾轴17、控制器18以及複數光學感測器。 其中，饋紙通道13位於上殼體u與下殼體12之間，用以作 為紙張P1的傳輸通道，且饋紙滾軸15設置於上殼體〖丨與下殼體 12内，其兩端分別穿過上殼體u之兩側面及下殼體12之兩側面， 而饋紙展輪Η ϋ接於饋紙滾軸15上，並隨著饋紙滾轴15之轉動 W疋轉’用以饋送饋紙通道13内之紙^ρι朝方向di前進。再者， ^紙滾軸17平行於軌糾15且設置於下殼體12内，其兩端亦 別穿過下殼體12之兩側面，而複數播紙f 16設置於擋紙滚轴 201236880 用以阻擋紙張P1朝 17上並沿一垂直於方向D1的方向D2排列 方向D1前進。 19器皆具有一 發射部191與一接受部192， 每一光學感測器 19之該些發射部191言免置於下殼冑12之底部 而該些光學感測器19之該些接受部192以相 且該些光學感測器 並延方向D2排列， 對應於該些發射部191的方式設置於上殼體11之頂部，其中，上 殼體η之底部與下殼體12之頂部分別具有對應於該些接受部⑼ 以及邊些發射部191的複數開孔10，因此當任-發射部191發出 光束夺光束可穿過其相對應的開孔1〇，以被相對應的接收部I% 卜田任光學感測器19之接受部192接收到來自於發 ㈣191所發射之光束時，光學感測器19會產生輸出第—訊號， 而虽任—光學感測器19之接受部192未接收到來自於發射部191 射之光束時，光學感測器19則會產生輸出第二訊號。 再者，控制器18係電性連接於該些光學感測$ 19與撞紙滾 ，用以依據該些光學感測器19所輸出之訊號而控制擋紙滚軸 17的運作。請參閱圖3八〜圖3D，其為饋紙通道内之紙張於斜向進 。時的過程不意圖。其中，當紙張ρι斜向進料紙張之前 端的—側會先抵頂到一擋紙臂16，且紙張P1會遮住部分光學感測 巧 19 的發射部191，使得相對應的接受部192無法接收到來自於 今务Ar? ι 、91所輸出之光束，其如圖3A所示，此時相對應的光學感 為19會產生輪出第二訊號至控制器18,而其它的光學感測器 201236880 19則產生輸出第-訊號至控制器18。接著，由於饋紙滾輛i5持 續轉動地饋送紙張P1，使得原本紙張ρι之前端且尚未抵頂到撞 紙臂16的部份會逐漸朝向擋紙臂16靠近，因此被紙張p】遮住之 光學感測器！9的發射部191將越來越多，直到文件寬度内的光學 感測器B都被紙張遮住為止，其如㈣與圖3c所示，此時文件 寬度内的光學感測器19會產生輸出第二訊號至控制器Μ。最後， 當控制器接收到所有光學感㈣19所產生輸出的第二訊號 時’控制器18會控制擒紙滾軸朝方向⑴轉動以使該些擔紙臂Μ 往下傾倒，使得紙張P1可繼續被往1 ®貝攸住刖饋达，其如圖3D所示。故， 如上所述之作動過程可知，饋紙裝置1所輸出的紙張Η已墙正其 斜向進给的情況。 /、 然而，上述饋紙裝置需使用的光學感測器的數量太多 於饋紙裝置的製作成本過高，不符合經濟效 置具有改善的空間。 故“，饋紙農 【發明内容】 以排除文件斜 本毛月之主要目的在提供—種成本低廉且可用 向進給的饋紙裝置。 於一較佳實施例中，本發明提供—種饋崎置，包括 一饋紙通道； 一饋紙結構 向前進； 之至少 紙張朝 第一方 201236880 一擋紙結構，用以阻撞該至少—紙張朝該第—方向前進； 複數感應臂，設置於該饋紙結構與該擋紙結構之間並沿—第 二方向排列，且該第二方向垂直於該第—方向，其中，每 應臂具有-接觸端、-賴端以及介於該接觸端與該遮蔽端= 之一旋轉部，當該至少-紙張接觸該接觸端而推動該接觸端時， 該感應臂以該旋轉部為軸心作一旋轉動作； 至少-光學感測器’具有一發射部與一接收部，當該接收部 接收來自於該發射部所發射之—光束時，該光學感測器輸出—第 一訊號’而當該發射部所發射之該光束被任—該感應臂之該遮蔽 端阻擔而使該接收部無法接收該光束時，該光學感㈣輸出一第 二訊號；以及 控制益’連接於該光學感測器與該擔紙結構，當該控制器 依序接收該第一訊號 该第二訊號以及該第一訊號時使該擋紙結 構允許該些紙張繼續朝該第一方向前進。 於一較佳實施例中，饋紙裝置更包括-饋紙感測模組，用以 感測該至少-紙張是否被置人該饋紙通道，且該控制器連接於該 饋紙結構與該饋紙❹樣組，於該賴感測模域測到該至少一 紙張被置人該饋紙通道時輸出—第三訊號至該控制器，以使該控 制器驅動該饋紙結構開始運作。 於—巍實_中’該饋紙感測模組包括： 另光予感/則器，具有一另一發射部與一另一接收部，且 201236880 肩另一接收部用以接收來自於該另一發射部所發射 束； 之—另 光 進紙感應結構，具有一進紙部、一感應部與一轉動軸，誃 進紙部與4感應部分別固接於該轉動軸，且該感應部位於該另一 發射部與料—接收部m當該至少-紙張未接觸該進 紙部時’該另-發射部所發射之該另—光束被該感應部阻撞而使 «亥另接收部無法接收該另一光束，而當該至少_紙張接觸該進 紙部而推動該進紙部以該轉動軸為軸心旋轉時，該感應部被帶動 旋轉以使該該p接㈣能接收來自於該另—發射部所發射之該 另一光束。 於一較佳實施例中，該饋紙感測模組包括： 另一光學感測器，具有一另—發射部與一另一接收部，且 /另接收相以接收來自於該另—發射部所發射之—另一光 束， ，一進紙感應結構，具有_進紙部、—感應部與—轉動轴，該 進紙部與該感應部分·接於該轉動軸，其中，當該至少一紙張 =觸該進紙料n純部能接㈣自於該另—發射部所 ㈣之°亥另—先束，而當該至少—紙張接觸該進紙部而推動該進 、我口卩以该轉動軸為軸心旋轉時， Μ感應。P被▼動旋轉而阻擋該另 —么射部所發射之該另—光束 使3玄另一接收部無法接收該另- 无束。 201236880 於^ —車交佳眘/ 歹】中，該饋紙結構包括一饋紙滾輪與一饋紙滾 ’饋、、氏展輪m接於該賴滾軸，並@應該軌滚轴之轉動 而旋轉。 /-k ^s, ^ ^ e例中，該擋紙結構包括複數擋紙臂與一擋紙滾 Λ 袞軸平行於該餽紙滾轴，而該複數擋紙臂設置於該擋 紙滾軸上並沿該第二方向排列。 " 於-杈佳實施例中’饋紙裝置更包括一固定軸，其兩端分別 固定於該饋紙梦要+ 1 側，且母一 S亥感應臂之該旋轉部樞接於該 固車由·。 體 於車乂佳實施例中，每一該感應臂之該旋轉部係為一柱狀 實施方式】 μ參閱圖4〜圖6’圖4為本發明饋紙裝置—較 Γ圖’圖5為圖〜饋紙_分結構示意圖，圖、: =示之饋紙裝置之部分結構立體分解圖。饋紙裝⑽ 光學感測器26、控制二饋紙結構 制态27、固疋軸2S以及複數感應臂”。 其中，饋紙通道23位於上般體21與下殼_之間，用以作 (的!f的傳輸通道’且紙張Ρ2可為單一紙張，也可為裝訂在 2^的張(如存㈣），而饋紙結構24則心饋送饋紙通道 ΤΓ朝第—方向D4前進。於— 匕括第-饋紙滾軸241、第二饋紙 ^饋紙滾輪243以201236880 VI. Description of the Invention: [Technical Field] The present invention relates to a paper feeding device, and more particularly to a paper feeding device for eliminating oblique feeding of documents. [Prior Art] Since today's automatic paper feeding devices are widely used in printers, photocopiers, and passbook machines, the main purpose is to feed documents into the machine to continue the printing operation. However, sometimes the paper is skewed during the feeding of the paper, and the oblique feeding of the paper causes the machine's print head to fail to print the material in the correct position on the document. In view of this, the prior art proposes a paper feeding device that prevents oblique feeding of documents. Please refer to FIG. 1 and FIG. 2. FIG. 1 is a side view showing the structure of a conventional paper feeding device, and FIG. 2 is a partial structural view of the paper feeding device shown in FIG. The paper feeding device 丨 includes an upper casing "1 lower body 12, a paper feed passage 13, a paper feed roller 14, a paper feed roller 15, a plurality of gears, a #16, a paper stopper roller 17, a controller 18, and a plurality of opticals Sensor. The paper feed passage 13 is located between the upper casing u and the lower casing 12 for use as a transmission passage of the paper P1, and the paper feed roller 15 is disposed in the upper casing 丨 and the lower casing 12, The ends pass through the two sides of the upper casing u and the two sides of the lower casing 12, respectively, and the paper feed shovel is spliced to the paper feed roller 15, and rotates with the rotation of the paper feed roller 15' The paper for feeding in the paper feed path 13 advances in the direction di. Moreover, the paper roller 17 is parallel to the rail correction 15 and disposed in the lower casing 12, and both ends thereof pass through both sides of the lower casing 12, and the plurality of paper f 16 is disposed on the paper stopper roller 201236880 It is used to block the paper P1 from advancing toward the 17 and aligning the direction D1 in a direction D2 perpendicular to the direction D1. Each of the 19 sensors has a transmitting portion 191 and a receiving portion 192. The emitting portions 191 of each of the optical sensors 19 are disposed at the bottom of the lower casing 12 and the receiving portions of the optical sensors 19 The 192 is arranged in the direction D2 of the optical sensor and is disposed on the top of the upper casing 11 corresponding to the emitting portions 191, wherein the bottom of the upper casing η and the top of the lower casing 12 are respectively There are a plurality of openings 10 corresponding to the receiving portions (9) and the side emitting portions 191, so that when the any-emitting portion 191 emits a beam of light, the light beam can pass through its corresponding opening 1〇 to be corresponding to the receiving portion. When the receiving portion 192 of the optical sensor 19 receives the light beam emitted from the (four) 191, the optical sensor 19 generates an output first signal, and although the receiving portion of the optical sensor 19 When the light beam from the emitting portion 191 is not received by the 192, the optical sensor 19 generates a second signal for output. Furthermore, the controller 18 is electrically connected to the optical sensing $19 and the paper-feeding roller for controlling the operation of the paper-stopping roller 17 according to the signals output by the optical sensors 19. Please refer to Fig. 3-8 to Fig. 3D, which is the paper in the paper feeding path in the oblique direction. The process of time is not intended. Wherein, when the paper ρι obliquely feeds the front end of the paper, the side will first abut against a paper stop arm 16, and the paper P1 will cover the emitting portion 191 of the partial optical sensing 19 so that the corresponding receiving portion 192 cannot Receiving the light beam output from the current Ar? ι, 91, as shown in Figure 3A, the corresponding optical sensation of 19 will produce a second signal to the controller 18, while other optical sensors 201236880 19 generates an output first signal to controller 18. Then, since the paper feed roller i5 feeds the paper P1 continuously, the portion of the original paper ρι and the portion that has not yet reached the collision arm 16 gradually approaches the paper stopper arm 16, and is thus covered by the paper p]. Optical sensor! The emitting portion 191 of 9 will be more and more until the optical sensor B within the width of the document is covered by the paper, as shown in (d) and FIG. 3c, at which time the optical sensor 19 within the width of the file is generated. The second signal is output to the controller Μ. Finally, when the controller receives all the second signals generated by the optical senses (4) 19, the controller 18 controls the pickup roller to rotate in the direction (1) to cause the paper rollers to be tilted downward, so that the paper P1 can continue. It is fed by 1 攸 攸 ,, as shown in Figure 3D. Therefore, as described above, it is known that the paper sheet output from the paper feeding device 1 has been fed obliquely toward the wall. /, However, the number of optical sensors to be used in the above-described paper feeding device is too large, and the manufacturing cost of the paper feeding device is too high, and there is room for improvement in conformity with economic effects. Therefore, the present invention provides a low-cost and feedable feeding device. In a preferred embodiment, the present invention provides a feed. The arsenal includes a paper feeding passage; a paper feeding structure is advanced; at least the paper is facing the first side 201236880, a paper stopper structure for blocking the at least the paper advances toward the first direction; the plurality of sensing arms are disposed at The paper feeding structure and the paper blocking structure are arranged along the second direction, and the second direction is perpendicular to the first direction, wherein each of the arm has a contact end, a drain end, and a contact end And the shielding end=one rotating portion, when the at least-paper contacts the contact end to push the contact end, the sensing arm rotates with the rotating portion as an axis; at least the optical sensor has one a transmitting portion and a receiving portion, when the receiving portion receives a light beam emitted from the transmitting portion, the optical sensor outputs a first signal 'When the light beam emitted by the transmitting portion is occupied - the sensing Armed end stop When the receiving portion is unable to receive the light beam, the optical sense (4) outputs a second signal; and the control is connected to the optical sensor and the paper supporting structure, and when the controller sequentially receives the first signal, The second signal and the first signal enable the paper stop structure to allow the paper to continue to advance in the first direction. In a preferred embodiment, the paper feeding device further includes a paper feeding sensing module for sensing Detecting whether at least the paper is placed in the paper feed path, and the controller is connected to the paper feeding structure and the paper feeding sample group, and the at least one paper is determined to be placed in the feeding sensing mode. When the paper channel is output, the third signal is sent to the controller, so that the controller drives the paper feeding structure to start operation. The paper feeding sensing module includes: another light sensing/sliding device, having a further transmitting portion and a further receiving portion, and the 201236880 shoulder receiving portion is configured to receive the beam emitted from the other transmitting portion; the optical-infeed sensing structure has a paper feeding portion and a sensing portion With a rotating shaft, the paper feeding portion and the 4 sensing portion respectively Connected to the rotating shaft, and the sensing portion is located at the other transmitting portion and the receiving-receiving portion m. When the at least-paper does not contact the paper feeding portion, the other light beam emitted by the other-emitting portion is induced by the sensing The portion is blocked so that the other receiving portion cannot receive the other light beam, and when the at least the paper contacts the paper feeding portion to push the paper feeding portion to rotate about the rotating shaft, the sensing portion is driven to rotate. In order to enable the p-contact (four) to receive the other light beam emitted from the other-emitting portion. In a preferred embodiment, the paper-fed sensing module comprises: another optical sensor having a In addition, the transmitting portion and a further receiving portion, and/or another receiving phase to receive the other light beam emitted from the other transmitting portion, a paper feeding sensing structure having a _ paper feeding portion, a sensing portion and - a rotating shaft, the paper feeding portion and the sensing portion are connected to the rotating shaft, wherein when the at least one paper = touches the paper feeding material n, the pure portion can be connected (four) from the other - the emitting portion (four) Another - first bundle, and when the paper is at least in contact with the paper feed portion, the push is pushed, and the mouth is turned When the moving axis is the axis rotation, Μ induction. P is rotated by ▼ to block the other beam emitted by the other portion, so that the other receiving portion of the frame cannot receive the other beam. 201236880 In the ^^车交佳慎/歹], the paper feeding structure comprises a paper feeding roller and a paper feeding roller 'feeding, the display wheel m is connected to the roller, and the rotation of the track roller And rotate. /-k ^s, ^ ^ e In the example, the paper stopper structure includes a plurality of paper stopper arms and a paper stopper roller shaft parallel to the paper feed roller, and the plurality of paper stopper arms are disposed on the paper stopper roller And arranged in the second direction. " In the embodiment of the present invention, the paper feeding device further comprises a fixed shaft, the two ends of which are respectively fixed on the side of the feeding paper + 1 side, and the rotating portion of the mother-S-S sensor arm is pivotally connected to the solid Car by. In the embodiment of the vehicle, the rotating portion of each of the sensing arms is a columnar embodiment. Referring to FIG. 4 to FIG. 6 FIG. 4 is a paper feeding device of the present invention - FIG. 5 is Figure ~ Feeding paper _ sub-structure diagram, diagram,: = shows a partial exploded view of the paper feeding device. Paper feeding device (10) optical sensor 26, control two-feed paper structure state 27, solid axis 2S and complex sensor arm". The paper feeding channel 23 is located between the upper body 21 and the lower shell _ (The transmission path of !f) and the paper cassette 2 may be a single sheet of paper, or may be stapled at 2^ (such as storage (4)), and the paper feeding structure 24 feeds the paper feed path ΤΓ toward the first direction D4. ——Including the first-feeding roller 241, the second paper feeding/feeding roller 243
S 201236880 及第二饋紙滾輪244，第一饋紙滾軸241設置於上殼體21内，且 其兩端分別穿過上殼體21之兩側面，而第二饋紙滾轴242設置於 下殼體22内，且其兩端分別穿過下殼體22之兩側面，再者，第 一饋紙滾輪243與第二饋紙滾輪244分別固接於第一饋紙滾轴241 與第二饋紙滾軸242上，並饋送文件朝第一方向D4前進。當第一 饋紙滚軸241與第二饋紙滾軸242分別朝方向D5與方向D6轉動 時，介於第一饋紙滾輪241與第二饋紙滾輪242之間的紙張P2即 會被往第一方向D4饋送。 又，擋紙結構25用以阻擋饋紙通道23内之紙張P2朝第一方 向D4前進。於本實施例中，擋紙結構25包括擋紙滾轴251及複 數擋紙臂252，擋紙滾軸251設置於下殼體22内並平行於第二饋 紙滾軸242，且其兩端分別穿過下殼體22之兩側面，而該些擋紙 臂252設置於擋紙滾轴251上並沿一垂直於第一方向D4的第二方 向D7排列。其中，該些擋紙臂252係隨著擋紙滾軸251之轉動而 以擋紙滾軸251為軸心作旋轉。 再者，光學感測器26係設置於下殼體22内，光學感測器26 之兩側分別具有一發射部261與一接收部262,且接收部262用以 接收發射部261所發射之光束。當接收部262能接收到來自於發 射部261所發射之光束時，光學感測器26輸出一第一訊號，而當 接收部262無法接收到來自於發射部261所發射之光束時，光學 感測器26則輸出第二訊號。此外，控制器27係電性連接於光學 201236880 感測器26與擋紙滚軸251，且用以依據光學感測器26所輸出之訊 號而控制擋紙滾轴251的運作。 又，複數感應臂29係設置於饋紙結構24與擋紙結構25之間 並沿第二方向D7排列，每一感應臂29具有一接觸端291、一遮 蔽端292以及介於接觸端291與遮蔽端292之間之一旋轉部293, 且每一感應臂29之旋轉部293係為一柱狀體並枢接於固定轴28, 每一感應臂29之遮蔽端292係位於光學感測器26之兩側之間， 而固定軸28之兩端係分別穿過且固定於饋紙裝置2之下殼體22, 因此每一感應臂29可因任一推力之推動而以其旋轉部293之中心 為旋轉軸心作一旋轉動作，也就是說，每一感應臂29之接觸端291 與遮蔽端292可繞著固定軸28旋轉。 請同步參閱圖7A〜圖7C，圖7A為圖4所示之饋紙裝置之任 一感應臂處於未旋轉時之狀態示意圖，圖7B為圖4所示之饋紙裝 置之任一感應臂處於旋轉中之狀態示意圖，圖7C為圖4所示之饋 紙裝置之任一感應臂處於結束旋轉時之狀態示意圖。 ~ 當所有感應臂29的接觸端291突出於下殼體22之開孔20且 未被任一推力推動時，所有遮蔽端292皆非處於光學感測器26的 發射部261與接收部262之間，因此光學感測器26之接收部262 能接收到來自於發射部261所發射之光束，此時光學感測器26就 會輸出第一訊號至控制器27 ;而於任一感應臂29之接觸端291 被任一推力推動而使感應臂29旋轉時，接觸端291會朝下殼體22 201236880 的方向逐漸傾倒，且遮蔽端292會於旋轉的過程中旋轉經過一介 於光學感測器26之發射部261與接收部262之間的位置處，而阻 擋了發射部261所發射之光束，因此光學感測器26之接收部262 無法接收到來自於發射部261所發射之光束，此時光學感測器26 就會輸出第二訊號至控制器27 ;而當所有紙張寬度内的感應臂29 的接觸端291因任一推力之推動而皆傾倒至下殼體22内時，所有 遮蔽端292則不再處於光學感測器26之發射部261與接收部262 之間，此時光學感測器26之接收部262就能再接收到來自於發射 部261所發射之光束而使光學感測器26輸出第一訊號至控制器 27 ° 以下說明本發明饋紙裝置2於紙張P2在無斜向進給之情況下 的饋送過程。請參閱圖8A〜圖8D，其為圖4所示之饋紙裝置於紙 張在無斜向進给之情況下的饋送過程示意圖。其中，當紙張P2被 使用者置入饋紙裝置2之饋紙通道23時，第一饋紙滾輪241與第 二饋紙滾242輪共同將紙張往第一方向D4饋送，此時紙張P2之 前端尚未接觸到任一感應臂29之接觸端291，其如圖8A所示， 故光學感測器26係輸出第一訊號至控制器27。 接著，第一饋紙滾輪241與第二饋紙滾輪242持續地將紙張 P2往第一方向D4饋送，由於紙張P2非處於斜向進給的情況，故 所有紙張寬度内的感應臂29之接觸端291將同時接觸到紙張P2 的前端，並且所有紙張寬度内的感應臂29會因應其接觸端291受 12 201236880 到紙張P2之前端的推力而開始旋轉，使得所有紙張寬度内的感應 臂29的接觸端291同時朝下殼體22的方向傾倒直至完全傾倒至 下殼體22内以讓紙張P2通過，其如圖8B與圖8C所示，且於如 此的過程中，所有紙張寬度内的感應臂29的遮蔽端292會從非處 於光學感測器26之發射部261與接收部262之間的位置，旋轉至 光學感測器26之發射部261與接收部262之間而阻擋發射部261 所發射的光束，並再度旋轉以離開位於發射部261與接收部262 之間的位置，因此控制器27會依序接收到來自於光學感測器26 之第一訊號、第二訊號以及第一訊號。至此，控制器26會控制擋 紙滾軸251朝方向D8轉動以使所有擋紙臂252往下傾倒，令紙張 P2可繼續被往前饋送，其如圖8D所示。 接下來說明本發明饋紙裝置2於紙張P2處於斜向進給之情況 下的饋送過程。請參閱圖9A〜圖9D，其為圖4所示之饋紙裝置於 紙張處於斜向進给之情況下的饋送過程示意圖。亦請圖步參閱圖 10Λ〜圖10C，其為圖4所示之饋紙裝置於紙張處於斜向進給之情 況下之複數感應臂與光學感測器的作動過程示意圖。其中，當紙 張P2被使用者送入饋紙裝置2之饋紙通道23時，第一饋紙滾輪 241與第二饋紙滚輪242共同將紙張P2往第一方向D4饋送，此 時紙張P2之前端尚未接觸到任一感應臂29之接觸端291，其如圖 9A與圖10A所示，故光學感測器26係輸出第一訊號至控制器27。 接著，如圖9B以及圖10B所示，由於紙張P2處於斜向進給 13 201236880 的情況，紙張P2之前端的一側會先接觸部分感應臂29之接觸端 291，使部分感應臂29因應紙張P2之前端的推力而開始旋轉，以 使部分感應臂29的接觸端291朝下殼體22的方向傾倒直至完全 傾倒至下殼體22内，紙張P2之前端的一側因此得以通過並順勢 抵頂到擋紙臂252而不再前進。接著，由於第一饋紙滾輪241與 第二饋紙滾輪242持續轉動地饋送紙張P2，使得原本紙張P2之 前端且尚未抵頂到擋紙臂252的部份會逐漸朝向擋紙臂252靠 近，因此感應臂29會依序被紙張P2前端推動而旋轉。 在這樣的過程中，每一感應臂29之遮蔽端292所處的位置皆 不同，且光學感測器26之發射部261所發射之光束會依序被不同 之感應臂29的遮蔽端292阻擋，直至紙張寬度内的每一感應臂29 之接觸端291皆傾倒至下殼體22内，因此控制器27會依序接收 到光學感測器26所產生輸出的第一訊號、第二訊號以及第一訊 號，如此也代表著饋紙通道23内之紙張P2已非處於斜向進给的 情況。最後，控制器27會控制擋紙滾軸朝方向D8轉動以使所有 擋紙臂252往下傾倒，進而紙張P2可繼續被往前饋送，其如圖9C、 圖9D以及圖10C所示。 根據以上所述可知，本發明饋紙裝置所輸出的紙張不會有斜 向進給的情況，因此應用本發明之饋紙裝置的打印機器可進行準 確的打印動作。再者，由於本發明饋紙裝置不需使用太多的光學 感測器，故有效降低其製作成本。 14 201236880 請參閱圖11，其為本發明饋紙裝置另一較佳實施例之部分結 構示意圖。其中，本實施例之饋紙裝置3大致類似於前述較佳實 施例中所述者，在此即不再予以贅述。本實施例與前述較佳實施 例不同之處在於，饋紙裝置3更包括一饋紙感測模組30，用以感 測紙張P2是否被置入饋紙通道33，且控制器（圖中未標示）亦電性 連接於饋紙結構34與饋紙感測模組30，當饋紙感測模組30感測 到紙張P2被置入饋紙通道33時輸出第三訊號至控制器，以使控 制器驅動饋紙結構34開始運作。也就是說，紙張P2在未被置入 於饋紙通道33時，饋紙結構34不會因電源（圖中未標示）開啟就持 續不停的運作，如此對使用者而言，可以達到節能省電的功效。 饋紙感測模組30之具體做法如下，其包括一另一光學感測器 301與一進紙感應結構302，其中，該另一光學感測器301，具有 一發射部3011與一接收部3012，且接收部3012用以接收來自於 發射部3011所發射之光束；而進紙感應結構302具有進紙部 3021、感應部3022與轉動轴3023，進紙部3021與感應部3022 分別固接於轉動軸3023，且進紙部3021向上突出於下殼體32之 開孔321，感應部3022位於發射部3011與接收部3012之間，而 轉動軸3023係穿過下殼體32之兩側面。 再者，當紙張P2未接觸進紙部3021時，發射部3011所發射 之光束會被感應部3022阻擋而使接收部3012無法接收光束，而 當紙張P2被置入饋紙通道33而接觸進紙部3021並推動進紙部 15 201236880 3021以轉動轴3023為軸心朝方向D9旋轉直至完全傾倒至下殼體 32内時，感應部3022會被帶動朝方向D9旋轉，使得接收部3012 能接收來自於發射部3011所發射之光束，此時，該另一光學感測 器301.會輸出第三訊號至控制器37,以令饋紙結構34開始饋送紙 張P2朝方向D4前進。 請參閱圖12，其為本發明饋紙裝置之饋紙感測模組於另一較 佳實施例的結構示意圖。其中，本實施例之饋紙裝置4大致類似 於前述較佳實施例中所述者，在此即不再予以贅述。本實施例與 前述實施例不同之處在於，當紙張P2未接觸進紙部4021時，饋 紙感測模組40之光學感測器401的接收部4012能接收來自於發 射部4011所發射之光束，而當紙張P2被置入饋紙通道43而接觸 進紙部4021並推動進紙部4021以轉動轴4023為軸心朝方向D9 旋轉時，感應部4022會被帶動朝方向D9旋轉而傾倒，使發射部 4011所發射之光束被感應部4022阻擋而令接收部4012無法接收 光束，此時，光學感測器401會輸出第三訊號至控制器（圖中未標 示），以令饋紙結構44開始饋送紙張P2朝方向D4前進。 以上所述僅為本發明之較佳實施例，並非用以限定本發明之 申請專利範圍，因此凡其它未脫離本發明所揭示之精神下所完成 之等效改變或修飾，均應包含於本案之申請專利範圍内。 16 201236880 【圖式簡單說明】 圖1 :係為習知饋紙裝置之結構側視圖。 圖2 :係為圖1所示之饋紙裝置之部分結構示意圖。 圖3A:係為圖1所示之饋紙裝置之饋紙通道内之紙張於斜向進给 時的第一階段過程示意圖。 圖3B :係為圖1所示之饋紙裝置之饋紙通道内之紙張於斜向進給 時的第二階段過程示意圖。 圖3C :係為圖1所示之饋紙裝置之饋紙通道内之紙張於斜向進給 時的第三階段過程示意圖。 圖3D :係為圖1所示之饋紙裝置之饋紙通道内之紙張於斜向進給 時的第四階段過程示意圖。 圖4 :係為本發明饋紙裝置一較佳實施例之結構側視圖。 圖5 :係為圖4所示之饋紙裝置之部分結構示意圖。 圖6 :係為圖4所示之饋紙裝置之部分結構立體分解圖 圖7A :係為圖4所示之饋紙裝置之任一感應臂處於非遮蔽位置處 時之部分結構示意圖。 圖7B :係為圖4所示之饋紙裝置之任一感應臂處於遮蔽位置處時 之部分結構示意圖。 圖7C :係為圖4所示之饋紙裝置之任一感應臂處於另一非遮蔽位 置處時之部分結構示意圖。 圖8A :係為圖4所示之饋紙裝置於紙張在無斜向進给之情況下的 第一階段饋送過程示意圖。 圖8B :係為圖4所示之饋紙裝置於紙張在無斜向進給之情況下的 第二階段饋送過程示意圖。 圖8C :係為圖4所示之饋紙裝置於紙張在無斜向進給之情況下的 第三階段饋送過程示意圖。 17 201236880 圖8D :係為圖4所示之饋紙裝置於紙張在無斜向進給之情況下的 第四階段饋送過程示意圖。 圖9A :係為圖4所示之饋紙裝置於紙張處於斜向進給之情況下的 第一階段饋送過程示意圖。 圖9B :係為圖4所示之饋紙裝置於紙張處於斜向進給之情況下的 第二階段饋送過程示意圖。 圖9C :係為圖4所示之饋紙裝置於紙張處於斜向進給之情況下的 第三階段饋送過程示意圖。 圖9D :係為圖4所示之饋紙裝置於紙張處於斜向進給之情況下的 第四階段饋送過程示意圖。 圖10A :係為圖4所示之饋紙裝置於紙張處於斜向進給之情況下 之複數感應臂與光學感測器的第一階段作動過程示意圖。 圖10B :係為圖4所示之饋紙裝置於紙張處於斜向進给之情況下 之複數感應臂與光學感測器的第二階段作動過程示意圖。 圖10C :係為圖4所示之饋纸裝置於紙張處於斜向進給之情況下 之複數感應臂與光學感測器的第三階段作動過程示意圖。 圖11 :係為本發明饋紙裝置另一較佳實施例之部分結構示意圖。 圖12:係為本發明饋紙裝置之饋紙感測模組於另一較佳實施例的 結構示意圖。 18 201236880 【主要元件符號說明】 1饋紙裝置 3饋紙裝置 10開孔 12下殼體 14饋紙滾輪 16複數擋紙臂 18控制器 20開孔 22下殼體 24饋紙結構 26光學感測器 28固定轴 30馈紙感測模組 33饋紙通道 40饋紙感測模組 191發射部 241第一饋紙滚軸 243第一饋紙滾輪 251擋紙滾轴 261發射部 291接觸端 293旋轉部 302進紙感應結構 3011發射部 3021進紙部 2饋紙裝置 4饋紙裝置 11上殼體 13饋紙通道 15饋紙滚轴 17擋紙滾軸 19光學感測器 21上殼體 23饋紙通道 25擋紙結構 27控制器 29複數感應臂 32下殼體 34饋紙結構 43饋紙通道 192接受部 242第二饋紙滾轴 244第二饋紙滾輪 252擋紙臂 262接收部 292遮蔽端 301光學感測器 401光學感測器 3012接收部 3022感應部S 201236880 and the second paper feed roller 244, the first paper feed roller 241 is disposed in the upper casing 21, and the two ends thereof respectively pass through the two sides of the upper casing 21, and the second paper feed roller 242 is disposed on In the lower casing 22, the two ends of the lower casing 22 pass through the two sides of the lower casing 22, and the first paper feed roller 243 and the second paper feed roller 244 are respectively fixed to the first paper feed roller 241 and the second The two paper feed rollers 242 are fed and the feed document is advanced in the first direction D4. When the first paper feed roller 241 and the second paper feed roller 242 are respectively rotated in the direction D5 and the direction D6, the paper P2 interposed between the first paper feed roller 241 and the second paper feed roller 242 is sent to The first direction D4 is fed. Further, the paper stopper structure 25 serves to block the sheet P2 in the sheet feeding path 23 from advancing toward the first direction D4. In the embodiment, the paper stopper structure 25 includes a paper stopper roller 251 and a plurality of paper stopper arms 252. The paper stopper roller 251 is disposed in the lower casing 22 and parallel to the second paper feed roller 242, and both ends thereof. The two paper stopper arms 252 are disposed on the paper stopper roller 251 and arranged in a second direction D7 perpendicular to the first direction D4. Among them, the paper stopper arms 252 rotate with the paper stopper roller 251 as an axis with the rotation of the paper stopper roller 251. In addition, the optical sensor 26 is disposed in the lower casing 22, and has a transmitting portion 261 and a receiving portion 262 on both sides of the optical sensor 26, and the receiving portion 262 is configured to receive the transmitting portion 261. beam. When the receiving portion 262 can receive the light beam emitted from the transmitting portion 261, the optical sensor 26 outputs a first signal, and when the receiving portion 262 cannot receive the light beam emitted from the transmitting portion 261, the optical sense The detector 26 outputs a second signal. In addition, the controller 27 is electrically connected to the optical 201236880 sensor 26 and the paper stopping roller 251, and is configured to control the operation of the paper stopping roller 251 according to the signal output by the optical sensor 26. Moreover, the plurality of sensing arms 29 are disposed between the paper feeding structure 24 and the paper blocking structure 25 and arranged in the second direction D7. Each of the sensing arms 29 has a contact end 291, a shielding end 292, and a contact end 291. A rotating portion 293 between the shielding ends 292, and the rotating portion 293 of each sensing arm 29 is a columnar body and pivotally connected to the fixed shaft 28, and the shielding end 292 of each sensing arm 29 is located in the optical sensor Between the two sides of the 26, the two ends of the fixed shaft 28 are respectively passed through and fixed to the lower casing 22 of the paper feeding device 2, so that each of the sensing arms 29 can be rotated by any of the thrusts 293 The center of the rotating shaft is rotated, that is, the contact end 291 and the shielding end 292 of each of the sensing arms 29 are rotatable about the fixed shaft 28. Please refer to FIG. 7A to FIG. 7C simultaneously. FIG. 7A is a schematic view showing a state in which any one of the sensing arms of the paper feeding device shown in FIG. 4 is not rotated, and FIG. 7B is a view of any one of the sensing arms of the paper feeding device shown in FIG. FIG. 7C is a schematic view showing a state in which any one of the sensing arms of the paper feeding device shown in FIG. 4 is at the end of rotation. When all the contact ends 291 of the sensing arm 29 protrude from the opening 20 of the lower casing 22 and are not pushed by any thrust, all the shielding ends 292 are not at the transmitting portion 261 and the receiving portion 262 of the optical sensor 26. Therefore, the receiving portion 262 of the optical sensor 26 can receive the light beam emitted from the transmitting portion 261, and the optical sensor 26 outputs the first signal to the controller 27; When the contact end 291 is pushed by any thrust to rotate the sensing arm 29, the contact end 291 will gradually fall toward the lower housing 22 201236880, and the shielding end 292 will rotate through an optical sensor during the rotation. At a position between the transmitting portion 261 and the receiving portion 262 of 26, the light beam emitted from the emitting portion 261 is blocked, so that the receiving portion 262 of the optical sensor 26 cannot receive the light beam emitted from the transmitting portion 261, The optical sensor 26 outputs a second signal to the controller 27; and when all the contact ends 291 of the sensing arm 29 in the width of the paper are tilted into the lower casing 22 by any pushing force, all the shielding End 292 is no longer in optical sensor 2 Between the transmitting portion 261 of the 6 and the receiving portion 262, the receiving portion 262 of the optical sensor 26 can receive the light beam emitted from the transmitting portion 261 to cause the optical sensor 26 to output the first signal to the control. The feeding process of the paper feeding device 2 of the present invention in the case where the paper P2 is fed without oblique feeding will be described below. Please refer to FIG. 8A to FIG. 8D, which are schematic diagrams of the feeding process of the paper feeding device shown in FIG. 4 in the case where the paper is fed without oblique feeding. Wherein, when the paper P2 is placed by the user into the paper feed passage 23 of the paper feeding device 2, the first paper feed roller 241 and the second paper feed roller 242 wheel jointly feed the paper in the first direction D4, at this time, the paper P2 The front end has not touched the contact end 291 of any of the sensing arms 29, as shown in FIG. 8A, so the optical sensor 26 outputs the first signal to the controller 27. Then, the first paper feed roller 241 and the second paper feed roller 242 continuously feed the paper P2 in the first direction D4. Since the paper P2 is not in the oblique feed direction, the contact of the sensor arm 29 in all the paper widths The end 291 will simultaneously contact the front end of the paper P2, and the sensing arms 29 in all paper widths will start to rotate in response to the thrust of the contact end 291 from the front end of the 12 201236880 to the paper P2, so that the contact of the sensing arm 29 in all paper widths The end 291 is simultaneously dumped in the direction of the lower casing 22 until it is completely poured into the lower casing 22 to pass the paper P2 as shown in Figs. 8B and 8C, and in such a process, the sensor arms in all the paper widths The shielding end 292 of the 29 is rotated from the position between the transmitting portion 261 and the receiving portion 262 of the optical sensor 26 to between the transmitting portion 261 and the receiving portion 262 of the optical sensor 26 to block the transmitting portion 261. The emitted light beam is rotated again to leave the position between the transmitting portion 261 and the receiving portion 262, so the controller 27 sequentially receives the first signal, the second signal, and the first signal from the optical sensor 26. . At this point, the controller 26 controls the paper stop roller 251 to rotate in the direction D8 to cause all of the paper stopper arms 252 to be tilted downward, so that the sheet P2 can continue to be fed forward as shown in Fig. 8D. Next, the feeding process of the paper feeding device 2 of the present invention in the case where the sheet P2 is fed obliquely will be described. Referring to Figures 9A to 9D, there is shown a schematic diagram of the feeding process of the paper feeding device shown in Figure 4 in the case where the paper is fed obliquely. Please also refer to FIG. 10A to FIG. 10C, which is a schematic diagram of the operation process of the multi-sensor arm and the optical sensor in the paper feeding device shown in FIG. 4 in the case where the paper is fed obliquely. When the paper P2 is fed into the paper feed path 23 of the paper feeding device 2 by the user, the first paper feed roller 241 and the second paper feed roller 242 jointly feed the paper P2 in the first direction D4, and at this time, the paper P2 The front end has not touched the contact end 291 of any of the sensing arms 29, as shown in FIGS. 9A and 10A, so the optical sensor 26 outputs the first signal to the controller 27. Next, as shown in FIG. 9B and FIG. 10B, since the paper P2 is in the oblique feed 13 201236880, the side of the front end of the paper P2 first contacts the contact end 291 of the partial sensing arm 29, so that the partial sensing arm 29 responds to the paper P2. The rotation of the front end starts to rotate so that the contact end 291 of the partial sensing arm 29 is tilted in the direction of the lower casing 22 until it is completely poured into the lower casing 22, and the side of the front end of the paper P2 is thus passed and the upper end is blocked. The paper arm 252 is no longer advanced. Then, since the first paper feed roller 241 and the second paper feed roller 242 continuously feed the paper P2, the portion of the front end of the original paper P2 that has not yet reached the paper stopper arm 252 gradually approaches the paper stopper arm 252. Therefore, the sensing arm 29 is sequentially rotated by the leading end of the sheet P2. In such a process, the positions of the shielding ends 292 of each of the sensing arms 29 are different, and the light beams emitted by the emitting portion 261 of the optical sensor 26 are sequentially blocked by the shielding ends 292 of the different sensing arms 29. Until the contact end 291 of each of the sensing arms 29 in the width of the paper is poured into the lower casing 22, the controller 27 sequentially receives the first signal, the second signal, and the output of the optical sensor 26. The first signal, this also represents the fact that the paper P2 in the paper feed path 23 is not in the oblique feed direction. Finally, the controller 27 controls the paper stop roller to rotate in the direction D8 to cause all of the paper stopper arms 252 to be tilted downward, so that the paper P2 can continue to be fed forward as shown in Figs. 9C, 9D and 10C. As apparent from the above, the paper output from the paper feeding device of the present invention does not have oblique feeding, and therefore the printer using the paper feeding device of the present invention can perform an accurate printing operation. Moreover, since the paper feeding device of the present invention does not require the use of too many optical sensors, the manufacturing cost thereof is effectively reduced. 14 201236880 Please refer to FIG. 11 , which is a partial structural diagram of another preferred embodiment of the paper feeding device of the present invention. The paper feeding device 3 of the present embodiment is substantially similar to that described in the foregoing preferred embodiment, and will not be further described herein. The present embodiment is different from the foregoing preferred embodiment in that the paper feeding device 3 further includes a paper feeding sensing module 30 for sensing whether the paper P2 is placed in the paper feeding passage 33 and the controller (in the figure) Not shown) is also electrically connected to the paper feeding structure 34 and the paper feeding sensing module 30. When the paper feeding sensing module 30 senses that the paper P2 is placed in the paper feeding channel 33, the third signal is output to the controller. In order for the controller to drive the paper feed structure 34 to begin operation. That is to say, when the paper P2 is not placed in the paper feeding path 33, the paper feeding structure 34 does not continue to operate due to the power source (not shown), so that the user can achieve energy saving. Power saving effect. The paper feed sensing module 30 is as follows. The method includes a further optical sensor 301 and a paper feed sensing structure 302. The other optical sensor 301 has a transmitting portion 3011 and a receiving portion. The receiving portion 3012 is configured to receive the light beam emitted from the transmitting portion 3011. The paper feeding sensing structure 302 has a paper feeding portion 3021, a sensing portion 3022 and a rotating shaft 3023, and the paper feeding portion 3021 and the sensing portion 3022 are respectively fixed. On the rotating shaft 3023, the paper feeding portion 3021 protrudes upwardly from the opening 321 of the lower casing 32, the sensing portion 3022 is located between the transmitting portion 3011 and the receiving portion 3012, and the rotating shaft 3023 passes through both sides of the lower casing 32. . Furthermore, when the paper P2 does not contact the paper feeding portion 3021, the light beam emitted from the emitting portion 3011 is blocked by the sensing portion 3022 so that the receiving portion 3012 cannot receive the light beam, and when the paper P2 is placed in the paper feeding path 33, it is contacted. The paper portion 3021 pushes the paper feeding portion 15 201236880 3021 to rotate in the direction D9 with the rotating shaft 3023 as the axis until it is completely dumped into the lower casing 32, and the sensing portion 3022 is driven to rotate in the direction D9, so that the receiving portion 3012 can receive The light beam emitted from the emitting portion 3011, at this time, the other optical sensor 301. outputs a third signal to the controller 37 to cause the paper feeding structure 34 to start feeding the paper P2 toward the direction D4. Please refer to FIG. 12, which is a structural diagram of another preferred embodiment of the paper feeding sensing module of the paper feeding device of the present invention. The paper feeding device 4 of the present embodiment is substantially similar to that described in the foregoing preferred embodiment, and will not be further described herein. The difference between the embodiment and the foregoing embodiment is that when the paper P2 does not contact the paper feeding portion 4021, the receiving portion 4012 of the optical sensor 401 of the paper feeding sensing module 40 can receive the light emitted from the transmitting portion 4011. The light beam, while the paper P2 is placed in the paper feed path 43 to contact the paper feed portion 4021 and push the paper feed portion 4021 to rotate in the direction D9 with the rotation axis 4023 as the axis, the sensing portion 4022 is driven to rotate in the direction D9 and dump The light beam emitted by the transmitting portion 4011 is blocked by the sensing portion 4022, so that the receiving portion 4012 cannot receive the light beam. At this time, the optical sensor 401 outputs a third signal to the controller (not shown) to enable the paper feeding. Structure 44 begins to feed paper P2 toward direction D4. The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent changes or modifications made without departing from the spirit of the present invention should be included in the present invention. Within the scope of the patent application. 16 201236880 [Simple description of the drawings] Fig. 1 is a side view showing the structure of a conventional paper feeding device. Figure 2 is a partial structural view of the paper feeding device shown in Figure 1. Fig. 3A is a schematic view showing the first stage of the process in which the paper in the paper feed path of the paper feeding device shown in Fig. 1 is fed obliquely. Fig. 3B is a schematic view showing the second stage of the paper feeding in the paper feeding path of the paper feeding device shown in Fig. 1 in the oblique feeding direction. Fig. 3C is a schematic view showing the process of the third stage of the paper feeding in the paper feeding path of the paper feeding device shown in Fig. 1 in the oblique feeding direction. Fig. 3D is a schematic view showing the fourth stage of the process of feeding the paper in the paper feed path of the paper feeding device shown in Fig. 1 in the oblique feed direction. Figure 4 is a side view showing the structure of a preferred embodiment of the paper feeding device of the present invention. Fig. 5 is a partial structural view showing the paper feeding device shown in Fig. 4. Fig. 6 is an exploded perspective view showing a part of the structure of the paper feeding device shown in Fig. 4. Fig. 7A is a partial structural view showing a state in which any of the sensing arms of the paper feeding device shown in Fig. 4 is in a non-shielding position. Fig. 7B is a partial structural view showing a state in which any of the sensing arms of the sheet feeding device shown in Fig. 4 is at a shielding position. Fig. 7C is a partial structural view showing a state in which any one of the sensing arms of the paper feeding device shown in Fig. 4 is at another non-shielding position. Fig. 8A is a schematic view showing the first stage feeding process of the paper feeding device shown in Fig. 4 in the case where the paper is fed without oblique feeding. Fig. 8B is a schematic view showing the second stage feeding process of the paper feeding device shown in Fig. 4 in the case where the paper is fed without oblique feeding. Fig. 8C is a schematic view showing the third stage feeding process of the paper feeding device shown in Fig. 4 in the case where the paper is fed without oblique feeding. 17 201236880 Fig. 8D is a schematic diagram showing the fourth stage feeding process of the paper feeding device shown in Fig. 4 in the case where the paper is fed without oblique feeding. Fig. 9A is a schematic view showing the first stage feeding process of the sheet feeding device shown in Fig. 4 in the case where the sheet is fed obliquely. Fig. 9B is a schematic view showing the second stage feeding process of the sheet feeding device shown in Fig. 4 in the case where the sheet is fed obliquely. Fig. 9C is a schematic view showing the third stage feeding process of the sheet feeding device shown in Fig. 4 in the case where the sheet is fed obliquely. Fig. 9D is a schematic view showing the fourth stage feeding process of the sheet feeding device shown in Fig. 4 in the case where the sheet is fed obliquely. Fig. 10A is a schematic view showing the operation of the first stage of the complex sensor arm and the optical sensor in the case where the paper feeding device of Fig. 4 is in the oblique feeding direction. Fig. 10B is a schematic view showing the operation of the second stage of the complex sensor arm and the optical sensor in the case where the paper feeding device of Fig. 4 is in the oblique feed direction. Fig. 10C is a schematic view showing the operation of the third stage of the complex sensor arm and the optical sensor in the case where the paper feeding device of Fig. 4 is in the oblique feeding direction. Figure 11 is a partial structural view showing another preferred embodiment of the paper feeding device of the present invention. Figure 12 is a schematic view showing the structure of a paper feeding sensing module of the paper feeding device of the present invention in another preferred embodiment. 18 201236880 [Description of main component symbols] 1 paper feeding device 3 paper feeding device 10 opening 12 lower casing 14 paper feeding roller 16 plural paper stopper arm 18 controller 20 opening 22 lower casing 24 paper feeding structure 26 optical sensing 28 fixed axis 30 paper feeding sensing module 33 paper feeding channel 40 paper feeding sensing module 191 emitting portion 241 first paper feeding roller 243 first paper feeding roller 251 paper blocking roller 261 emitting portion 291 contact end 293 Rotating portion 302 paper feeding sensing structure 3011 emitting portion 3021 paper feeding portion 2 paper feeding device 4 paper feeding device 11 upper casing 13 paper feeding passage 15 paper feeding roller 17 paper blocking roller 19 optical sensor 21 upper casing 23 Paper feed passage 25 paper blocking structure 27 controller 29 plural sensor arm 32 lower casing 34 paper feeding structure 43 paper feed passage 192 receiving portion 242 second paper feed roller 244 second paper feed roller 252 paper stopper arm 262 receiving portion 292 Shading end 301 optical sensor 401 optical sensor 3012 receiving portion 3022 sensing portion
S 19 201236880 3023轉動軸 4011發射部 4012接收部 4021進紙部 4022感應部 4023轉動軸 D1方向 D2方向 D3方向 D4第一方向 D5方向 D6方向 D7第二方向 D8方向 D9方向 P2紙張 P1紙張 s 20S 19 201236880 3023 Rotary shaft 4011 Emitter 4012 Receiving section 4021 Paper feed section 4022 Sensing section 4023 Rotation axis D1 direction D2 direction D3 direction D4 First direction D5 direction D6 direction D7 Second direction D8 direction D9 direction P2 paper P1 paper s 20