M327289 八、新型說明： 【新型所屬之技術領域】 本創作涉及一種送紙器，特別是一種具有紙張邊緣感 測裝置的送紙器。 【先前技術】 按，當前處理和使用紙張的辦公設備種類很多，如打 印機、掃描儀、複印機和傳真機等，為提高工作效率，其 中許多紙張處理設備配備有自動送紙器。送紙器都包括若 干進紙滾輪組成的滾輪組，滾輪組之間形成有送紙通道。 為確定對紙張開始進行影像訊號採集處理的時間，送 紙器上設置有紙張前沿感測裝置（前後以進紙方向為准， 紙張前進方向為前）。當前送紙器上之紙張前沿感測裝置一 般都包括設於紙張處理設備上並位於對紙張進行處理位置 後面的前沿感應器和前沿擺動臂，前沿感應器通過電線與 一訊號處理器相連。 紙張進入時，其前邊緣推動前沿擺動臂，前沿擺動臂 隨之觸動前沿感應器，並由前沿感應器經由電線將訊號傳 送至訊號處理器。訊號處理器接收到此一訊號後即會確定 滾輪組的轉動圈數，滾輪組轉過相應圈數後紙張處理設備 就會開始對紙張進行影像訊號採集。當文件紙張通過前沿 擺動臂，前沿擺動臂恢復到原來的位置時，前沿感應器恢 復原來的狀態。訊號處理器接收到此訊號後，即會確定滾 輪組的轉動圈數，滾輪組轉過相應圈數後紙張處理設備就 M327289 會認定此紙張已處理完畢。以此方式，紙張處理設備即可 達到區分每一頁文件紙張影像的目的，實現掃描、影印或 傳真功能。 另外，有的送紙器之紙張前沿感測裝置通過在文件紙 張的背後設置黑色背景，利用黑色背景與文件紙張顏色的 差別來完成對紙張前沿的偵測。 為防止紙張因歪斜太嚴重而在繼續進紙的過程中受到 餃紙通道兩侧結構的擠壓而被撕裂和送紙器夾紙，一些送 紙器會設置紙張側邊感測裝置。當前紙張側邊感測裝置一 般由侧邊擺動臂與側邊感應器組成，側邊感應器通過電線 與訊號處理器相連。當紙張歪斜程度達到觸動側邊擺動臂 並觸發側邊感應器時，側邊感應器會產生訊號並由電線傳 送至訊號處理器。訊號處理器接收到此一訊號時即會停止 滚輪組的動作以停止送紙。 惟，上述習知送紙器依靠前沿擺動臂和滾輪組等的配 合感測紙張前沿的，由於機械結構的侷限性，靈敏度也較 差。利用在文件紙張背後設置黑色背景感測紙張:前= 的，在遇到文件紙張顏色較深時，如深綠色、紅褐色，往 往會發生識別困難；遇到文件紙張就是黑色的情況，更是 無法識別。 疋 習知送紙器利用侧邊擺動臂等的配合感測紙張側邊， 也由於側邊擺動臂等機械結構的局限性，感_張側邊的 靈敏度也較差。 M327289 【新型内容】 本創作之第一目的為，針對上述習知技術存在的缺陷 提供一種靈敏度較高，能夠感測紙張前沿之具有紙張邊緣 感測裝置的送紙器。 本創作的第二目的為，針對上述習知技術存在的缺陷 提供一種靈敏度較高，能夠感測紙張側邊之具有紙張邊緣 感測裝置的送紙器。 為達成上述之第一目的，本創作所提供具有紙張邊緣 感測裝置的送紙器包括：機體；滾輪組，裝設於機體上， 該滾輪組之間形成有送纸通道，送纸通道包括用於正常過 紙之進紙通道和進紙通道左右兩側之通道側邊；訊號採集 器，包括裝設於機體上位於送纸通道一側之光源和用來將 光訊號轉換成電訊號的影像感測器；訊號處理器，與訊號 採集器之影像感測器相連；及前沿反光片，裝設於機體上， 位於送纸通道之另一側並對應於進紙通道處。 為達成上述之第二目的，本創作所提供具有紙張邊緣 感測裝置的送紙器包括：機體；滾輪組，裝設於機體上， 該滾輪組之間形成有送纸通道，送纸通道包括用於正常過 紙之進紙通道和進紙通道左右兩側之通道側邊；訊號採集 器，包括裝設於機體上位於送纸通道一側之光源和用來將 光訊號轉換成電訊號的影像感測器；訊號處理器，與訊號 採集器之影像感測器相連；及側邊反光片，裝設於機體上， 位於送纸通道的另一側並對應於通道側邊處。 M327289 如上所述，本創作具有紙張邊緣感測裂置的送紙 鈾沿反光片和影像感測器作為前沿感測穿。 。、衣夏。甶於_方而 ，的感測不需要進行機械接觸，不需要配合前沿擺動 #和滾輪組的動作，另-方面前沿反光片與任何紙 ί，反光能力都可以餘多。所以本創作送紙ϋ感測紙張 前沿的靈敏度較高。 π 如上所述’本創作具有紙張邊緣感測裂置的送紙器以 側邊反光片和影像感測H等作為側邊感測I置。由於 面對紙張側邊的感測不需要進行機械接觸，不 = 邊擺動臂的動作H面側邊反光片與任何紙張對:， 二=…X強很多。所以本創作送紙器感測咖^ 的筮破度較南。 【實施方式】 為詳細說明本創作之技術内容、構造特徵、所達成目 的及功效，以下_舉實_並配相式科說明。 請參閱第一圖和第二圖，圖示為應 張邊緣感測裝置的送紙器之掃## j作八有、、，氏 — U料儀。掃描儀包括掃描儀主 和运紙器。掃描儀主機包括機體卜機體i上安裝有四個 3推動紙張5前進的進紙滾輪2’四個進紙滾輪2組成滾輪 =四個賴滾輪2之_成錢_道8，送纸通道8 =用於正常過紙之進紙通道81和進紙通道Μ左右兩側 通道側邊82。正常情況下紙張5從進紙通道81通過。 機體1上還固疋有光源6、CCD影像感測器在紙張 M327289 5和CCD影像感測器11之間反射光線（第一圖中虛線所示） 的三塊反光鏡7和一將光線聚焦到CCD影像感測器1丨上的 透鏡10。該CCD影像感測器11與一訊號處理器（圖未示） 相連接。本例中，所述CCD影像感測器11做為接受光訊號 並將其轉化成電訊號的影像感測器；光源6、反光鏡7、透 鏡10和CCD影像感測器11組成訊號採集器。 機體1上在送纸通道8上方（相當於紙張5背面一側） 固定有一壓紙板4。壓紙板4朝向送纸通道8的一面上之兩 端對應兩通道側邊處分別設有侧邊反光片9,壓紙板4上對 應於進紙通道81的左右兩側及中部處各設有一前沿反光片 3。這裡在三處設置三片前沿反光片3，可以使文件紙張在 ^斜或者狹窄的情況下，送紙器照樣比較準確地感蜊紙張 最前端邊緣的位置，以對文件進行較完整的掃描；當然這 裡前沿反光片3可以根據情況設置更多片，而且因前沿反 光片3材料價格很低即使設置更多片成本增加也較少。前 沿反光片3和侧邊反光片9在壓紙板4上前後位置〜致， 從而可以較方便地共用訊號採集器。 送紙器之紙張前沿感測過程為： 當紙張5尚未進入或上一紙張5已過去且下一紙張5 未進入時，光源6所發出光線照射到三片前沿反光片 被刖沿反光片3反射，反射光線經過三塊反光鏡7依序反 射後進入透鏡1〇,由透鏡10將光線聚焦到CCD影像感蜊器 11上。當有紙張5正常進入時，紙張5 —般會將至少〜前 M327289 沿反光片3遮擋，光源6所發出並照射向該前沿反光片3 處的光線開始改由紙張5反射到反光鏡7，並最終由透鏡 10聚焦到CCD影像感測器丨丨上。 由於紙張5和前沿反光片3反射光線的能力不同，前 沿反光片3反射光線的能力會遠強於各種紙張5反射光線 的能力，所以最後CCD影像感測器n接受到 不同:從而轉化成的電訊號(此處為電壓：= 同。前沿反光片3反光時’由於較強的光線導致影像感測 器上較高的照度，造成其較高的電壓輸出。當全部前沿反 光片3都反光時，訊號處理器認定為無紙狀態。當有紙張5 反光時’由於較弱的光線造成其較低的電壓輸出，訊號處 理器認定為有紙狀態。當訊號處理器“發現” ^紙^離 向有紙狀態變化時，認定為開始進紙，紙張處理設備： 確定對紙張開始處理（掃描或打印等）的時間。 送紙器之紙張側邊感測過程為： 在正常進紙和無紙的情況下，位於送纸通道 側邊82處之侧邊反光片9會將光源6所發出之光 反光鏡7 ’並由反光鏡7依序反射後進人透鏡1()= 10將光線聚焦到CCD影像感測器U上。木 田透銃 备紙張5非」下金、# 入^即當紙張5進Μ送纸通道8之通道侧邊82卢士進 位於被遮住之通道側邊82處的側邊反 蝽寸， 這時光源6照射到該處之光線開始由紙張5進^破遮擔’ 於紙張5與側邊反光片9反光能力不同 ^射。由M327289 VIII. New description: [New technical field] This creation relates to a paper feeder, in particular to a paper feeder having a paper edge sensing device. [Prior Art] Press, there are many types of office equipment currently processing and using paper, such as printers, scanners, copiers, and fax machines. Many paper processing equipments are equipped with an automatic paper feeder to improve work efficiency. The paper feeder includes a roller group composed of a plurality of paper feed rollers, and a paper feed passage is formed between the roller groups. In order to determine the time when the paper starts the image signal acquisition process, the paper feeder is provided with a paper leading edge sensing device (the paper feed direction is the front and the back, and the paper advance direction is the front). The leading edge sensing device on the current feeder typically includes a leading edge sensor and a leading edge swing arm disposed on the paper handling device and located behind the processing position of the paper, the leading edge sensor being coupled to a signal processor via a wire. When the paper enters, its front edge pushes the leading edge swing arm, and the leading edge swing arm touches the leading edge sensor, and the leading edge sensor transmits the signal to the signal processor via the wire. After receiving the signal, the signal processor determines the number of rotations of the roller group. After the roller group rotates the corresponding number of turns, the paper processing device starts to collect image signals for the paper. When the document paper passes the leading edge swing arm and the leading edge swing arm returns to its original position, the leading edge sensor returns to its original state. After receiving the signal, the signal processor will determine the number of rotations of the roller set. After the roller set has passed the corresponding number of turns, the paper processing device will confirm that the paper has been processed. In this way, the paper processing equipment can achieve the purpose of distinguishing the image of each page of paper, enabling scanning, photocopying or faxing. In addition, some of the paper leading edge sensing devices of the paper feeder perform the detection of the leading edge of the paper by setting a black background on the back of the document paper and using the difference between the black background and the color of the document paper. In order to prevent the paper from being too severe and the paper is squeezed by the structure on both sides of the dumpling passage during the feeding process, the paper is jammed and the paper feeder is jammed. Some paper feeders are provided with paper side sensing devices. The current paper side sensing device generally consists of a side swing arm and a side sensor, and the side sensor is connected to the signal processor via a wire. When the paper is skewed to the side of the swing arm and the side sensor is triggered, the side sensor generates a signal and is transmitted by the wire to the signal processor. When the signal processor receives this signal, it stops the action of the wheel set to stop feeding. However, the above-mentioned conventional paper feeder relies on the combination of the leading edge swing arm and the roller set to sense the leading edge of the paper, and the sensitivity is also poor due to the limitation of the mechanical structure. Use the black background to sense the paper behind the document paper: before =, when the paper is darker, such as dark green, reddish brown, it will often be difficult to identify; when the paper is black, it is Not recognized.习 The conventional paper feeder senses the side of the paper by the cooperation of the side swing arm or the like, and also because of the limitation of the mechanical structure such as the side swing arm, the sensitivity of the side of the sensed sheet is also poor. M327289 [New Content] The first objective of the present invention is to provide a paper feeder having a paper edge sensing device with high sensitivity and capable of sensing the leading edge of the paper in view of the defects of the above-mentioned prior art. A second object of the present invention is to provide a paper feeder having a paper edge sensing device which is highly sensitive and capable of sensing the side of the paper, in view of the above-described drawbacks of the prior art. In order to achieve the above first objective, the present invention provides a paper feeder having a paper edge sensing device, comprising: a body; a roller group mounted on the body, a paper feeding passage formed between the roller groups, and the paper feeding passage includes The signal collector includes a light source mounted on the body side of the paper feed channel and an image for converting the optical signal into an electrical signal. The sensor; the signal processor is connected to the image sensor of the signal collector; and the front edge reflector is mounted on the body, on the other side of the paper feed path and corresponding to the paper feed path. In order to achieve the above second object, the paper feeder provided with the paper edge sensing device comprises: a body; a roller group mounted on the body, a paper feeding passage formed between the roller groups, and the paper feeding passage includes The signal collector includes a light source mounted on the body side of the paper feed channel and an image for converting the optical signal into an electrical signal. The sensor; the signal processor is connected to the image sensor of the signal collector; and the side reflector is mounted on the body, on the other side of the paper path and corresponding to the side of the channel. M327289 As noted above, this paper has paper edge sensing split paper feed uranium along the reflector and image sensor as the leading edge sensing. . , clothing summer.感 而 而 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Therefore, the paper feed cassette of this creation senses the sensitivity of the leading edge of the paper. π As described above, the paper feeder having the paper edge sensing split is set as the side sensing I with the side reflector and the image sensing H or the like. Since the sensing of the side of the paper does not require mechanical contact, the side of the H-side reflector is aligned with any paper pair: 2 = ... X is much stronger. Therefore, the paper feeder of this creation senses that the smashing degree of the coffee is relatively south. [Embodiment] In order to explain in detail the technical contents, structural features, achieved goals, and effects of the present invention, the following description will be given. Please refer to the first figure and the second figure, which is shown as the brush of the paper feeder of the edge sensing device. The scanner includes the scanner main and the paper feeder. The scanner main body includes a body body body i is mounted with four 3 push papers 5 forward paper feed roller 2' four paper feed rollers 2 composed of rollers = four rollers 2 _ into money _ road 8, paper feed channel 8 = paper feed passage 81 for normal paper feed and paper feed passage Μ left and right side passage sides 82. The sheet 5 is normally passed through the paper feed path 81. The body 1 is also fixed with a light source 6, a CCD image sensor for reflecting light between the paper M327289 5 and the CCD image sensor 11 (shown by a broken line in the first figure), and a focusing mirror 7 The lens 10 is placed on the CCD image sensor 1 . The CCD image sensor 11 is connected to a signal processor (not shown). In this example, the CCD image sensor 11 is used as an image sensor that receives an optical signal and converts it into an electrical signal; the light source 6, the mirror 7, the lens 10, and the CCD image sensor 11 constitute a signal collector. . A cardboard 4 is fixed on the body 1 above the paper feed path 8 (corresponding to the back side of the paper 5). The side edges of the platen 4 facing the paper feed passage 8 are respectively provided with side reflectors 9 at the sides of the two passages, and the front edge of the paperboard 4 corresponding to the left and right sides and the middle portion of the paper feed passage 81 are respectively provided. Reflector 3. Here, three front edge retroreflective sheetings 3 are arranged at three places, so that the document paper can be more accurately sensed at the front end edge of the paper in the case of skew or narrowness of the document, so as to perform a relatively complete scanning of the document; Here, the leading edge retroreflective sheeting 3 can be provided with more sheets depending on the situation, and the material cost of the leading edge reflecting sheet 3 is low even if the cost of setting more sheets is increased. The leading edge retroreflective sheeting 3 and the side reflecting sheet 9 are positioned forward and backward on the platen 4, so that the signal collector can be shared more conveniently. The paper leading edge sensing process of the paper feeder is: When the paper 5 has not entered or the last paper 5 has passed and the next paper 5 has not entered, the light emitted by the light source 6 is irradiated to the three front edge reflectors and is reflected by the reflection sheet 3 The reflected light is sequentially reflected by the three mirrors 7 and enters the lens 1 , and the lens 10 focuses the light onto the CCD image sensor 11 . When the paper 5 enters normally, the paper 5 will generally block at least the front M327289 along the reflective sheet 3, and the light emitted by the light source 6 and irradiated to the leading edge reflective sheet 3 starts to be reflected by the paper 5 to the mirror 7, Finally, the lens 10 is focused onto the CCD image sensor. Due to the different ability of the paper 5 and the leading edge reflector 3 to reflect light, the ability of the leading edge reflector 3 to reflect light is much stronger than the ability of various papers 5 to reflect light, so the final CCD image sensor n is different: The electrical signal (here is the voltage: = the same. When the front edge reflector 3 is reflective), the higher illumination is caused by the stronger light on the image sensor, resulting in higher voltage output. When all the front reflectors 3 are reflective The signal processor recognizes that it is paperless. When there is paper 5 reflective, 'the signal processor recognizes that it has a paper state due to weaker light due to weaker light. When the signal processor "discovers" ^ paper ^ When the paper status changes, it is determined that the paper feed starts, and the paper processing equipment: Determines the time for starting the paper (scanning or printing, etc.). The paper side sensing process of the paper feeder is: Normal paper feed and no paper In the case, the side reflectors 9 located at the side 82 of the paper path will reflect the light mirror 7' emitted by the light source 6 and are sequentially reflected by the mirror 7 and then enter the lens 1 () = 10 to focus the light to CCD Like the sensor U. Mutian through the backup paper 5 is not "putting gold, #入^, that is, when the paper 5 enters the side of the paper path of the paper feed channel 8 82 Lushen into the side of the side of the side of the covered channel 82 In contrast, when the light source 6 is irradiated to the light, the light is started to be cut by the paper 5, and the reflective property of the paper 5 and the side reflector 9 is different.
取、、、ς得遞到CCD M327289 影像感測器11的光線和CCD影像感測器11產生的電信號 強度也不同。侧邊反光片9反光時，CCD影像感測器11產 生較高的電壓輸出。當兩處側邊反光片3都反光時，訊號 處理器認定為正常狀態。當有紙張5反光時，CCD影像感測 器11產生較低的電壓輸出，這時訊號處理器認定為不正常 進紙，就會停止滾輪組的進紙動作，以防止紙張5受到擠 壓而被撕裂或送紙器夾紙，也防止損壞送紙器。 本例中，送紙器之紙張前沿感測裝置和紙張侧邊感測 裝置都借用了掃描儀主機之訊號採集器和訊號處理器，以 進一步節省製造成本，縮小紙張處理設備體積。 如上所述，本創作送紙器以三片價格低廉的前沿反光 片3和CCD影像感測器11等做為紙張前沿感測裝置，並且 紙張前沿感測裝置借用了掃描儀主機之訊號採集器和訊號 處理器。本送紙器對紙張5前沿的感測不需要進行機械接 觸，不需要配合送紙器的機械動作，可以保證前沿反光片3 與任何紙張5對比反光能力差別顯著，所以不僅靈敏度高， 而成本較低，並可以準確地偵測到歪斜的以及各種寬度的 紙張55之前沿。 本創作送紙器以兩片價格低廉的側邊反光片9和CCD 影像感測器11等作為紙張側邊感測裝置，並且紙張侧邊感 測裝置借用了掃描儀主機之訊號採集器和訊號處理器。本 送紙器對紙張5侧邊的感測不需要進行機械接觸，可以保 證侧邊反光片9與任何紙張5對比反光能力差別顯著，所 11 M327289 以不僅靈敏度高，*且、纟#_單、成本低。 本=作保護範圍並不侷限於上述具體實施例，事實 上°午夕增添、修改和取代都不會脫離所附申請專利範圍 所界定的原理之㈣。例如，㈣的肋也可祕複印機 f傳真機上，用於掃描儀和傳真機上時，具有紙張邊緣感 測^置的送紙器同樣可以與主機共用訊號採㈣和訊號處 > 。卩刀以節省製造成本，縮小紙張處理設備體積。實The light transmitted to the CCD M327289 image sensor 11 and the electric signal intensity generated by the CCD image sensor 11 are also different. When the side reflector 9 is reflective, the CCD image sensor 11 produces a higher voltage output. When both side reflectors 3 are reflective, the signal processor determines that it is in a normal state. When the paper 5 is reflected, the CCD image sensor 11 generates a lower voltage output. When the signal processor determines that the paper is abnormally fed, the paper feed operation of the roller group is stopped to prevent the paper 5 from being squeezed. Tearing or feeding the paper jam also prevents damage to the feeder. In this example, the paper leading edge sensing device and the paper side sensing device of the paper feeder borrow the scanner's signal collector and signal processor to further reduce manufacturing costs and reduce the size of the paper processing equipment. As described above, the present paper feeder uses three inexpensive front edge reflectors 3 and CCD image sensors 11 as paper leading edge sensing devices, and the paper leading edge sensing device borrows the scanner host signal collector and Signal processor. The paper feeder does not need to make mechanical contact for the front edge of the paper 5, and does not need to cooperate with the mechanical action of the paper feeder to ensure that the front reflective sheet 3 has a significant difference in contrast performance with any paper 5, so that the sensitivity is high and the cost is low. And can accurately detect skewed and leading edges of paper 55 of various widths. The original paper feeder uses two low-cost side reflectors 9 and CCD image sensor 11 as paper side sensing devices, and the paper side sensing device borrows the scanner host signal collector and signal processing. Device. The paper feeder does not need to make mechanical contact for the sensing of the side of the paper 5, and can ensure that the side reflector 9 is significantly different from any paper 5 in contrasting light, and the 11 M327289 is not only highly sensitive, * and 纟#_单, low cost. The scope of protection is not limited to the specific embodiments described above, and in fact, the addition, modification and substitution in the midnight will not depart from the principle defined in the scope of the appended claims (4). For example, the ribs of (4) can also be used on copiers. When used on scanners and fax machines, the paper feeder with paper edge sensing can also share the signal with the host (4) and signal station >. Sickle to save manufacturing costs and reduce the size of paper handling equipment. real
施例中之CCD影像感測器u也可用⑽影像感測器代替。 反光鏡7之設置數量可根據具體情況騎增減。所述前沿 反光二3呈長條狀並跨越兩通道側邊82，這時前沿反光片 3同時具有了前沿反光片3和側邊反光片9的雙重功能。 【圖式簡單說明】 第-圖為-種應用本創作具有紙張邊緣感測震置的送 紙器之掃描儀的結構示意圖。The CCD image sensor u in the embodiment can also be replaced by a (10) image sensor. The number of mirrors 7 can be increased or decreased depending on the situation. The front edge reflections 3 are elongated and span the two side edges 82. At this time, the front edge reflection sheet 3 has the dual functions of the front edge reflection sheet 3 and the side reflection sheet 9. [Simple description of the drawing] The first figure is a schematic diagram of the structure of a scanner that has a paper edge sensing shock.
第二圖為第-圖中壓紙板、前沿反光片和側邊反光片 與送纸通道的關係示意圖。 弟-圖和第二圖中，直綫箭顯所指方向爲進紙 【主要元件符號說明】 機體 1 前沿反光片 3 紙張 5 反光鏡 7 進紙通道 81 進紙滾輪 2 壓紙板 4 光源 6 送紙通道 8 通道側邊 82 12 M327289 侧邊反光片 CCD影像感測器The second figure is a schematic diagram of the relationship between the platen, the leading edge reflector and the side reflectors and the paper feed passage in the first figure. In the brother-picture and the second figure, the direction of the straight arrow is the paper feeding. [Main component symbol description] Body 1 Front edge reflector 3 Paper 5 Mirror 7 Paper feed channel 81 Paper feed roller 2 Platen 4 Light source 6 Paper feed Channel 8 channel side 82 12 M327289 Side reflector CCD image sensor