200924982 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種印表機、掃描器等成像設備中的介質傳送機 構，更具體地說，涉及一種介質偏斜糾正機構。 【先前技術】BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium conveying mechanism in an image forming apparatus such as a printer, a scanner, and the like, and more particularly to a medium skew correcting mechanism. [Prior Art]
在列印、掃描時，有時會因為介質擺放偏斜、滾輪組裝公差 等因素的影響，而導致其列印或掃描出歪斜的影像，為避免這種 情況的發生，通常會在介質進入列印或掃描區域前使用各種方式 消除介質的偏斜。 美國專利US6011948揭露了 -種成像設備中的糾偏装置，參 見圖ίο、11所示，酬偏裝置包括顺元件15及連接件π，該 多個糾偏元件15藉由該連接件16連為—體’且該糾偏裂置謂 動地襄於滾輪η的驅動軸18上，該裝置兩端的扭簧％ 一端灿 作用於連接件16，被傳送的介以前緣與糾偏元件15的糾正面 相接觸，介質S在推動糾偏元件15的過程中形成一預定 曲’而糾偏元件關在介質S的推動下轉動—定歧 斜被糾正，當介質S穿職輪_ 質偏 件15將回復初始位置。該糾相單偏元 也存在-些不足之處，比如介 f目對間早、成本較低，但 扭簧24 _下，將_ s偏在？職輪、_，、裝置在 fS施加-個較大的力，這樣容易對介 200924982 質s造成損傷。且因該糾偏裝置整体裝於驅動軸i8上，則因滚輪 組裝公差所產㈣偏斜，該裝置無法糾正。另外，介質s前=阳 接觸到糾偏元件15時，-邊進給—邊進行偏斜糾正，糾正^果^ 【發明内容】During printing and scanning, sometimes due to factors such as media deflection and roller assembly tolerances, it may cause printing or scanning of skewed images. To avoid this, it usually enters the medium. Use various methods to eliminate the skew of the media before printing or scanning the area. U.S. Patent No. 6,011,948 discloses a correcting device in an image forming apparatus. Referring to Figures ί, 11, the reversing device includes a compliant element 15 and a connecting member π, and the plurality of correcting elements 15 are connected by the connecting member 16 And the corrective splitting is placed on the drive shaft 18 of the roller η. One end of the torsion spring at both ends of the device acts on the connecting member 16, and the transmitted leading edge contacts the correcting surface of the correcting element 15, the medium S forms a predetermined curvature in the process of pushing the correcting element 15 and the correcting element is rotated under the push of the medium S. The fixed skew is corrected, and when the medium S is worn, the deflector 15 will return to the initial position. There are also some inadequacies in the phase-corrected single-bias element. For example, the medium-to-medium pair is early and the cost is low, but the torsion spring 24 _ is lower, and _ s is biased? The professional wheel, _, and device exert a large force on the fS, which makes it easy to damage the quality of the 200924982. Moreover, since the correcting device is integrally mounted on the drive shaft i8, the device can not be corrected due to the deflection caused by the assembly tolerance of the roller. In addition, when the medium s front = yang is in contact with the correcting element 15, the edge feeding is corrected, and the correction is corrected.
本發明所要解決之技術問暇提供—齡__正機構， 當介質偏斜_正，其前緣到達滾輪組的鱗_處後，糾 構對介質的_力消失，可避免對介f造成損傷。 一為解決上述技術問題，本發明的介質偏斜糾正機構，包括. ，該Γ馬達帶動轉動;一主動輪，該主動輪安裝在該 ，並_驅_—起轉動；-從動輪，該從動輪與該主 =合，形成夹持間隙，以傳動介質，·一糾偏件，該糾偏件設 =驅输、錄介f的樹向，_增偏斜，並可 、女裝位置處自由轉動1具有糾偏位置和釋放位置丨一抑制 隨主ΓΓ]件與顺件有選擇地接觸連接，以域抑制於糾偏件 :主^的轉動，以使該糾偏件處於糾偏位置；及一施動件，該 包動件文裝在該驅動軸上， 動輪轉動’並可以人、 與動轴’使糾偏件隨主 载所"、σ σ H給力使顺件與抑齡麟連接，卸 裁所相抑制，使、㈣件從從顺位置向釋放位置運動。 糾偏件且右—成 〃 又卩部，該受抑部與抑制件有選擇地接觸連接 8 200924982 以加載所述的抑制;所述的糾偏 以糾正介質低钮〇. . ^糾偏邛，該糾偏部用 質偏斜’且物部與糾偏部分居於糾偏件的兩端部位置 糾偏部為一凸塊。 受抑部為一凸塊。 受抑部也可為一凹槽。 接1抑麻、#抑制端’*亥抑制端與所述的受抑部選擇性連 還具有一固定端，該固定端與-調節結構連接。調 即、，、《構包财至少兩餘置相差的凸柱。 抑制件為-彈性體’該彈性體可以為—扭簧或者—彈性片。 施動件為一壓簧。 以更好的糾正介質的偏 糾偏部與介質向接觸的面為一平面 斜，並予以對齊。 知用了這樣結構後’由於在主動輪與糾偏件之間設有彈性 件，當介質前緣到達滾輪組之失持間隙處時，彈性裝置與受抑部 相脫離’糾偏件將在彈性件的作用下隨主動輪一起轉動，則糾偏 件對介質的阻力消失，可避免對介f的傳送造成損傷。而且，由 於框架上設有裝置，可與顯件上之受抑部她合，這樣在 對介質偏斜糾正騎程中’顺件處於靜止狀態，可以更好地實 現糾正偏斜之效果。而由於她上設置註少兩個糾，通過將 扭簧-端頂在不_凸起處，可實現對不同厚度介質的偏斜進行 9 200924982 糾正。 【實施方式】 以下結合附圖對本發明作進一步詳細的說明： 圖1是掃㈣軌機射_ H施方式介質偏斜糾正 機構之結構，包財堆疊在進紙盤加_介質Μ。在介 質的進給路徑的起始端處為—取·輪23㈣取紙滾輪23〇會逐 -地把介質Μ從進紙盤21〇中取出，送進介質傳送路徑祕， 經由進給滾輪220將介質Μ按F方向沿傳送路徑⑷進給。並通 過主動輪246和從動輪247之後，經過掃描模組進行掃描， 最後由出紙滚輪25〇將掃描完畢的介質送出至出紙盤㈣中。在 該傳送路徑243上設置有主動輪246及從動輪247，以及與該主動 輪246連接的糾偏件251。 請參見圖2，驅動軸245設置在掃描器架體(fr_)上，該主 動輪施固設在驅動轴24s上由馬達（圖中未示）帶動，該從動 輪247位於主動輪246的下側，並與之相對轉動而形成炎持間隙 (mp)，贱鱗介# ’觸之。_偏件⑸安裝在該驅動轴 245上並依驅動轴245為軸心而轉動，且位於主動輪施的外側， 又靠近架體241的位置處。在驅動軸撕上且於糾偏件251與主 動輪246之間套接一壓縮彈* 252，使該屋縮彈* Μ2兩侧分別與 的糾偏件251的連接端面257及主動輪246的—端面緊密連接。、 200924982 .輪246朝送紙方向轉動時，由於三者的連接關係， _偏件251藉由壓縮彈黃252直接施加轉動担力也會隨著主 動輪246沿相同方向轉動。 , 該糾偏件251套接在驅動轴245上，其具有糾偏位置和釋放 =置，其中糾偏湖系因糾偏件251相鄰連接端面的外表面上凸 认_偏《卩255呈垂直方向，可與送紙方向而來的介質μ前緣的 ❹《角成直角此時在糾偏件251上凸設的受抑部256可與一抑制 扭簧253的-抑制端267接觸，以载入抑制該糾偏件251，控制糾 偏件251無法隨主動輪轉動而轉動。請參照圖3，糾偏部255所在 位置是靠近糾偏件251的連接端面攻，而受抑部256靠近糾偏件 251的自由端面258。 同時’上述扭f 253是位於糾偏件251上方並套固於所述架 1的凸柱264上。在該處架體加奴置有三侧節播位， ❹可為凸起’分別為26卜262、263。該扭簧253具有兩個功能端， 匕括固又端266係頂靠在調節檔位中任一槽位撕或加或2纪 下k要視;丨質的厚度而定’本實施例中，該固定端Μ6頂靠在 作為檔位的凸起262下。該扭簧2S3上述的一抑制端挪，是與糾 扁件251上較抑部256相接觸，並適當地抵住受抑部256，以產 生阻止糾偏件繼續隨主動輪246轉動轉動的作用。如此一來， 、就能^偏部255擋住介質Μ，以進行糾偏介f Μ功能。 明參見圖4，在進紙過程中，藉由主動輪246通過壓縮彈簧 11The technical problem to be solved by the present invention provides an age-based positive mechanism. When the medium is skewed _ positive and its leading edge reaches the scale of the roller set, the _ force of the medium disappears, and the medium f can be avoided. damage. In order to solve the above technical problem, the medium deflection correcting mechanism of the present invention comprises: the Γ motor drives the rotation; a driving wheel, the driving wheel is mounted thereon, and the driving wheel is rotated; the driven wheel, the slave The moving wheel is combined with the main body to form a clamping gap for transmitting the medium, and a correcting member, the correcting member is set to drive, the tree direction of the recording f, _inclination, and the position of the women's clothing can be freely rotated. 1 having a rectifying position and a releasing position, wherein the suppressing is selectively contacted with the main member and the member, and the field is restrained by the rectifying member: the rotation of the main body to make the correcting member in the correcting position; and an actuating member The enveloping article is mounted on the drive shaft, and the moving wheel rotates 'and can be used by the human and the moving shaft to make the correcting member connect with the main carrier", σ σ H to force the accessory to connect with the aging collar, the unloading station The phase suppression causes the (four) pieces to move from the position to the release position. The correcting member and the right-forming portion and the crotch portion, the restraining portion and the suppressing member selectively contacting the connection 8 200924982 to load the suppression; the correcting to correct the medium low button .. The portion is deflected by the mass and the object portion and the correcting portion are located at the both end portions of the correcting member, and the position correcting portion is a bump. The depressed part is a bump. The restrained portion can also be a groove. The smear-inhibiting end, the # suppressing end, and the suppressing portion are selectively connected to the depressed portion, and have a fixed end, and the fixed end is connected to the - regulating structure. Tune, and, "construction of at least two pillars with different dimensions. The suppressing member is - an elastomer. The elastic body may be a torsion spring or an elastic sheet. The actuating member is a compression spring. In order to better correct the deviation of the medium, the surface in contact with the medium is inclined and aligned. Knowing the use of such a structure, 'Because of the elastic member between the driving wheel and the correcting member, when the leading edge of the medium reaches the gap of the roller set, the elastic device is separated from the depressed portion. The correcting member will be in the elastic member. Under the action of the rotation together with the driving wheel, the resistance of the correcting member to the medium disappears, and the damage to the transmission of the medium f can be avoided. Moreover, since the device is provided on the frame, it can be combined with the restrained portion of the display, so that the effect of correcting the skew can be better achieved when the medium is in a stationary state during the correction of the medium deflection. And because she has two corrections on the set, the deflection of the different thickness media can be achieved by placing the torsion spring-end on the non-protrusion 9 200924982 correction. [Embodiment] The present invention will be further described in detail below with reference to the accompanying drawings: Fig. 1 is a structure of a sweeping (four) rail machine _ H mode dielectric skew correcting mechanism, and a stack of money is stacked on a paper feed tray. At the beginning of the feed path of the medium, the take-up wheel 23 (four) of the paper take-up roller 23 〇 will take the medium 逐 out of the paper feed tray 21 逐, and feed the medium transport path secret, via the feed roller 220 The media 进 is fed in the F direction along the transport path (4). After passing through the driving wheel 246 and the driven wheel 247, scanning is performed by the scanning module, and finally the scanned medium is sent out to the output tray (4) by the paper discharge roller 25〇. A drive wheel 246 and a driven wheel 247, and a correcting member 251 connected to the drive wheel 246 are disposed on the transmission path 243. Referring to FIG. 2, the driving shaft 245 is disposed on the scanner frame (fr_). The driving wheel is fixed on the driving shaft 24s and driven by a motor (not shown). The driven wheel 247 is located under the driving wheel 246. Side, and rotate relative to it to form an inflammatory holding gap (mp), 贱 介 # # '. The eccentric member (5) is mounted on the drive shaft 245 and rotates about the drive shaft 245 as an axis, and is located outside the drive wheel and at a position close to the frame 241. A compression bomb * 252 is sleeved between the correcting member 251 and the driving wheel 246, so that the connecting end surface 257 of the correcting member 251 and the end surface of the driving wheel 246 are respectively disposed on the two sides of the housing bomb * Μ 2 tight connection. 200924982. When the wheel 246 is rotated in the paper feed direction, due to the connection relationship of the three, the _ biasing member 251 directly applies the rotational force by the compression spring 252 to rotate in the same direction as the main wheel 246. The correcting member 251 is sleeved on the driving shaft 245, and has a correcting position and a release=setting, wherein the correcting lake is convexly recognized on the outer surface of the adjacent end surface of the correcting member 251. The angle 前 of the front edge of the medium μ from the paper feed direction is at right angles. The restrained portion 256 protruding on the correcting member 251 at this time can be in contact with the restraining end 267 of the suppressing torsion spring 253 to load and suppress the loading. The correcting member 251 controls the correcting member 251 to rotate without the driving wheel rotating. Referring to FIG. 3, the position of the correcting portion 255 is close to the connecting end face of the correcting member 251, and the depressed portion 256 is adjacent to the free end surface 258 of the correcting member 251. At the same time, the above-mentioned twisting f 253 is located above the correcting member 251 and is fixed to the boss 264 of the frame 1. There are three side section broadcast positions in the frame body, and the 凸起 can be raised ‘26 262, 263 respectively. The torsion spring 253 has two functional ends, and the solid end 266 is abutted against any slot in the adjustment gear, or added or 2 times, depending on the thickness of the enamel. The fixed end Μ 6 abuts against the projection 262 as a gear position. The suppressing end of the torsion spring 2S3 is in contact with the restraining portion 256 of the correcting member 251 and appropriately abuts against the restraining portion 256 to prevent the correcting member from continuing to rotate with the driving wheel 246. In this way, the 偏 255 can block the medium Μ to perform the correcting function. Referring to Figure 4, the compression spring 11 is passed through the drive wheel 246 during the paper feed process.
用力增大到大於架體上的扭蒉253對糾偏件251馳郷力 時，糾偏件251就開始轉動，而介質μ在進給滾輪22〇的持續作 用下其前緣會始終與糾偏部255貼齊，續請參見圖S，當糾偏件 251轉動-定角度後，介質Μ前緣抵達主動輪2奶與從動輪撕 的夾持間隙處時，此時扭簧253的抑制端267剛好與糾偏件⑸ 上的受抑部256相脫離，則糾偏件251在壓簧253的作用下繼續 隨主動輪246 —起轉動’續請參見圖7 ’如此一來糾偏件25丨上的 受抑部256對介質Μ前緣的阻力消失，此時，糾偏件25ι乃由糾 偏位置轉向釋放位置，則主動輪246、從動輪247將偏斜已被糾正 200924982 252帶動糾偏件则始轉動，當糾偏件⑸上的受抑部μ6被架 體241上的扭簧253抑制物抵頂時，而停止轉動，即使糾偏 部扮的自由端加正好處於傳送路徑如中，若是被傳送的介 質Μ產生偏斜而以其進給前緣一角先接觸到糾偏部255的呈平面 設計的檔® 2552。此時當行動仲介質Μ及轉動中的主動輪施對 糾偏件251的共同作用力不足以使糾偏件⑸克服扭簧253的彈 力而呈不轉動狀態，但介質Μ則仍在進給滾輪22〇的作用下繼續 進給作動，這樣介質Μ會逐漸形成—f曲部，請參見圖$，直到 當介質Μ前緣完全貼齊糾偏部况的槽面加後，即達成介質 Μ的偏斜被糾正’之後過程令’介質Μ對糾偏部况的推動力逐 漸增大，而主動輪246對糾偏件251的作用力也隨著壓簧扮的 逐漸變形而增大，當介質Μ和主動輪246對糾偏件251的共同作 12 200924982 的二質Μ傳送至掃描單元2〇〇，也可避免糾偏件⑸對介質 Μ造 成損傷。隨著糾偏細的轉動，當其受抑部256再次被扭簧扮 的抑制端267項住時，則開始對下一介質Μ的偏斜進行糾正功能。 Ο ❹ 凊參見圖8、9，是本案第二實施方式與第一實施方式不同之 =堇在於該糾偏件2δ3之結構，其他部分結翻同；第二實施例 ^糾偏件283設有三個受抑部卿、⑼、⑽、及分別與該三個 =相對應，三個糾偏物，、此當對-介質Μ偏斜 订、，、正時，觉抑部100頂住扭簧253抑制端267時，與該受抑 邛1〇〇相對應之糾偏部11〇 —端剛好處於傳送路徑如中，在完 ^該介f Μ偏斜的糾正後’受抑部⑼受頂住於扭簧253的抑 由端267與3亥相對應的糾偏部⑴自由端剛好處於傳送路徑M3 中’於是開始對下一介質Μ偏斜進行糾正。 需^朗岐’本㈣之竹騎纟怔機淋财應用於掃 二，而構中，用於印表機、自動_，影印機等機 ^述的人7用於單面進紙機構中，也朗於雙面進紙機構中。 紙張，槽等可承载圖像一 ^ M 凸塊狀，與扭簧253的一抑制端267接觸，當 然，該受抑部256 Α άτ a 1 * 為一凹槽設計，姆253的-抑制端267 也可:@轉動，並且 施加的扭力―一，，：本 13When the force is increased to be greater than the twist 253 on the frame body, the correcting member 251 starts to rotate, and the medium μ is always with the correcting portion 255 under the continuous action of the feed roller 22〇. For the splicing, please refer to FIG. S. When the correcting member 251 is rotated and fixed, the leading edge of the medium 抵达 reaches the clamping gap of the driving wheel 2 and the driven wheel. At this time, the restraining end 267 of the torsion spring 253 is just When the restraining portion 256 on the correcting member (5) is disengaged, the correcting member 251 continues to rotate with the driving wheel 246 under the action of the pressing spring 253. [Continued to refer to FIG. 7] Thus, the depressed portion on the correcting member 25丨The resistance of the leading edge of the 256 pairs of media disappears. At this time, the correcting member 25i is turned to the release position by the correcting position, and the driving wheel 246 and the driven wheel 247 are corrected. The correction gear is rotated. When the correcting member is rotated, the correcting member is rotated. (5) The upper restrained portion μ6 is stopped by the torsion spring 253 on the frame body 241, and the rotation is stopped, even if the free end of the correcting portion is just in the transport path, if the medium being transported is deflected And the corner of the feed leading edge first contacts the correcting portion 255 Profile planar design ® 2552. At this time, when the action medium medium and the rotating driving wheel are applied to the correcting member 251, the joint force is insufficient to cause the correcting member (5) to be in a non-rotating state against the elastic force of the torsion spring 253, but the medium is still in the feeding roller 22 Continue to feed under the action of 〇, so that the media 逐渐 will gradually form—f curved part, please refer to the figure $, until the groove of the medium Μ front edge is completely affixed to the correcting condition, then the deflection of the medium 达成 is achieved. After being corrected, the driving force of the medium Μ to the correcting condition is gradually increased, and the force of the driving wheel 246 on the correcting member 251 is also increased with the gradual deformation of the pressing spring, when the medium 主动 and the driving wheel 246 The transfer of the secondary enthalpy of the rectifying member 251 to the scanning unit 2 2009 12200924982 can also prevent the correcting member (5) from damaging the medium Μ. With the rectifying rotation, when the restraining portion 256 is again restrained by the restraining end 267 of the torsion spring, the correction function for the deflection of the next medium 开始 is started. Referring to Figures 8 and 9, the second embodiment of the present invention is different from the first embodiment in that the structure of the correcting member 2δ3 is the same, and the other portions are the same; the second embodiment is provided with three correcting members 283. Inhibitors, (9), (10), and respectively correspond to the three =, three correctives, when the pair of media Μ skewed,,, timing, the suppression part 100 withstand the torsion spring 253 suppression end At 267 hours, the correcting portion 11 corresponding to the suppressed 邛1〇〇 is just in the transmission path, and after the correction of the deviation of the ff Μ, the depressed portion (9) is supported by the torsion spring. The free end of the correcting portion (1) corresponding to the inhibiting end 267 and 3H of 253 is just in the transport path M3', so that the correction of the next medium skew is started. It is necessary to use the bamboo riding machine of the present (four) to apply to the sweeping machine. In the structure, the person 7 for the printer, automatic _, photocopying machine, etc. is used in the single-sided paper feeding mechanism. It is also in the double-sided feed mechanism. The paper, the groove or the like can carry an image of a bump, and is in contact with a restraining end 267 of the torsion spring 253. Of course, the depressed portion 256 Α aτ a 1 * is a groove design, and the 253-suppressed end 267 can also be: @旋转, and the applied torque - one,:: Ben 13
Mf 200924982 具有實質相同的效果 山當然，所述扭簧也可以為彈片，其一端固定於架體上 ^可與_上之受抑部她合，_⑽糾轉性構件； ’所述凸起之數目可以根據需要而設定之，例如··所述糾偏部 ^、相應的受抑部可呀為-剩_ 編“ 四對等。職是，類似於以上這樣的 變換L構設計均落在本㈣的賴範圍之内。 【圖式簡單說明】 第1圖係制本發明介質偏斜糾正機構第-實施方式之掃描 器進紙機構結構示意圖。 田 第圖係第實施方式介質偏斜糾正機構之結構示意圖。 第3圖係第2圖所示糾偏件之結構示意圖。Mf 200924982 has substantially the same effect. Of course, the torsion spring can also be a spring piece, one end of which is fixed on the frame body ^ can be combined with the suppressed part of the _, (10) correcting member; The number can be set as needed, for example, the rectification part ^, the corresponding repressed part can be a _ _ _ "four pairs of equal. The job is, similar to the above transformation L structure design is in this (4) Within the scope of the drawing. [Simplified description of the drawings] Fig. 1 is a schematic view showing the structure of the scanner feeding mechanism of the medium deflection correcting mechanism of the present invention. The map is a medium deflection correcting mechanism of the first embodiment. Schematic diagram of the structure. Fig. 3 is a schematic structural view of the correcting member shown in Fig. 2.
第4〜第7圖係第2圖所示糾正機構各動作狀態側視示意圖。 第8圖係第二實施方式動作狀態侧視示意圖。 第9圖係第8圖所示糾偏件之結構示意圖。 第1〇圖㈣景技_絲置之截面圖。 第11圖係第1G圖中A1部分之放大立體圖。 【主要元件符號說明】 15 糾偏元件 16 13 滾輪 18 24 扭簧 24b 連接件 驅動軸 扭簧的一端 200924982Fig. 4 to Fig. 7 are side views showing the respective operational states of the correcting mechanism shown in Fig. 2. Fig. 8 is a side elevational view showing the operation state of the second embodiment. Figure 9 is a schematic view showing the structure of the correcting member shown in Figure 8. Figure 1 (4) Scenery _ Wire section of the wire. Fig. 11 is an enlarged perspective view of the portion A1 in Fig. 1G. [Main component symbol description] 15 Correction component 16 13 Roller 18 24 Torsion spring 24b Connector Drive shaft One end of torsion spring 200924982
S、Μ 介質 20a 糾正面 200 掃描單元 210 進紙匣 220 進給滚輪 230 取紙滚輪 240 介質偏斜糾正機構250 出紙滾輪 260 出紙匣 243 傳送路徑框架 241 架體 251 > 283糾偏件 245 驅動軸 246 主動輪 247 從動輪 252 壓縮彈簧 253 扭簧 261 > 262、263 凸起 267 抑制端 256、 100、101、102 受抑部 255、 110 > 111 ' 112 糾偏部266 固定端 264 凸柱 257 連接端面 258 自由端面 2551 ί 自由端 2552 擋面S, 介质 Media 20a Correction surface 200 Scanning unit 210 Paper feed tray 220 Feed roller 230 Pickup roller 240 Media skew correction mechanism 250 Paper exit roller 260 Paper exit 243 Transfer path frame 241 Frame 251 > 283 Correction 245 Drive shaft 246 drive wheel 247 driven wheel 252 compression spring 253 torsion spring 261 > 262, 263 protrusion 267 suppression end 256, 100, 101, 102 affirmation portion 255, 110 > 111 ' 112 correction portion 266 fixed end 264 convex Column 257 connecting end face 258 free end face 2551 ί free end 2552 stop
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