TWI650250B - Print media feeding mechanism having adjustable roller holders - Google Patents
Print media feeding mechanism having adjustable roller holders Download PDFInfo
- Publication number
- TWI650250B TWI650250B TW105139376A TW105139376A TWI650250B TW I650250 B TWI650250 B TW I650250B TW 105139376 A TW105139376 A TW 105139376A TW 105139376 A TW105139376 A TW 105139376A TW I650250 B TWI650250 B TW I650250B
- Authority
- TW
- Taiwan
- Prior art keywords
- shaft
- arm
- eccentric
- limiting
- feeding mechanism
- Prior art date
Links
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
本案提供一種具可調式滾輪支臂之列印媒介饋送機構，其包含驅動轉軸及按壓單元。按壓單元包括按壓轉軸、彈性組件、固定框架以及一對支臂。固定框架包括第一側壁及第二側壁。第一支臂包括第一轉軸樞接於第一側壁。第一支臂的一端連接至彈性組件，另一端樞接按壓轉軸。第二支臂包括偏心輪軸、偏心輪穿孔及限位軸。偏心輪軸之周緣與限位軸之周緣相互推抵。第二支臂的一端連接至彈性組件，另一端樞接按壓轉軸。當偏心輪軸轉動周緣而推抵限位軸之周緣時，第二支臂沿限位槽位移且以限位軸為軸心受彈性組件作用，將按壓轉軸推壓向驅動轉軸。The present invention provides a printing medium feeding mechanism with an adjustable roller arm that includes a driving shaft and a pressing unit. The pressing unit includes a pressing shaft, an elastic assembly, a fixing frame, and a pair of arms. The fixing frame includes a first side wall and a second side wall. The first arm includes a first rotating shaft pivotally connected to the first side wall. One end of the first arm is connected to the elastic component, and the other end is pivotally pressed against the rotating shaft. The second arm includes an eccentric axle, an eccentric bore, and a limit shaft. The circumference of the eccentric axle and the periphery of the limit shaft are mutually pushed against each other. One end of the second arm is connected to the elastic component, and the other end is pivotally pressed against the rotating shaft. When the eccentric shaft rotates around the circumference and pushes against the periphery of the limiting shaft, the second arm is displaced along the limiting slot and is biased by the elastic component with the limiting shaft as the axis, and pushes the pressing rotating shaft to the driving rotating shaft.
Description
本案係關於一種印表機之列印媒介饋送機構，尤指一種具可調式滾輪支臂之列印媒介饋送機構。 The present invention relates to a printing medium feeding mechanism of a printer, and more particularly to a printing medium feeding mechanism with an adjustable roller arm.
隨著科技的進步與發展，印表機的應用也愈來愈廣泛。傳統上，這類印表機主要藉由轉動一對進紙滾輪(paper feeding rollers)來饋送紙張。饋送的紙張夾置於一對分設於朝向列印頭進紙方向上方的按壓滾輪(pinch roller)及下方的驅動滾輪(driving roller)，透過可轉動的按壓滾輪以一預定按壓力(nip pressure)與驅動滾輪接觸，當驅動滾輪轉動時，即可將紙張饋送至印列噴頭。為確保紙張穩定的饋送，並避免發生歪斜現象，按壓滾輪與驅動滾輪必須保持平行並維持全線平穩的按壓力。然而，饋紙機構中之按壓滾輪與驅動滾輪卻常因不當組裝或操作而失去彼此間的平行度。尤其在寬幅印表機中，由於寬幅印表機之寬度較長，通常需將複數組按壓滾輪相對於一共同驅動滾輪而設置，於此情況下，按壓滾輪與驅動滾輪之間的平行度便常發生部份偏移狀況。一旦按壓滾輪與驅動滾輪之間存有任何平行度的誤差，除可能造成按壓滾輪與驅動滾輪過度磨損外，亦可能致使饋送紙張無法平順地饋送，甚至造成紙張歪斜或損害而無法列印。 With the advancement and development of technology, the application of printers has become more and more extensive. Traditionally, such printers primarily feed paper by rotating a pair of paper feeding rollers. The fed paper clip is placed between a pair of pinch rollers disposed above the paper feed direction of the print head and a driving roller below, and a predetermined pressing force is transmitted through the rotatable pressing roller (nip pressure) ) In contact with the drive roller, the paper can be fed to the print head when the drive roller is rotated. To ensure a stable feed of the paper and to avoid skewing, the push roller and the drive roller must be parallel and maintain a smooth pressing force across the line. However, the pressing roller and the driving roller in the paper feeding mechanism often lose parallelism with each other due to improper assembly or operation. Especially in wide-format printers, since the width of the wide-format printer is long, it is usually necessary to set the composite array pressing roller relative to a common driving roller. In this case, the parallel between the pressing roller and the driving roller Partial offsets often occur. Once there is any parallel error between the pressing roller and the driving roller, in addition to excessive wear of the pressing roller and the driving roller, the feeding paper may not be fed smoothly, or even the paper may be skewed or damaged and cannot be printed.
因此，如何發展一種具可調式滾輪支臂之列印媒介饋送機構來解決現有技術所面臨之問題，實為本領域極需面對之課題。 Therefore, how to develop a printing medium feeding mechanism with an adjustable roller arm to solve the problems faced by the prior art is a problem that needs to be faced in the field.
本案之目的在於提供一種具可調式滾輪支臂之列印媒介饋送機構，其係適用於一印表機，例如但不限於寬幅印表機，可精密及準確地實現按壓滾輪及驅動滾輪之間的平行度，且其成本低、易維護、製造簡單、可靠度高，有效改善按壓滾輪與驅動滾輪組裝後平行度不佳的問題，確保按壓滾輪與驅動滾輪完全線接觸，並達到平穩地饋送列印媒介的目的。 The purpose of the present invention is to provide a printing medium feeding mechanism with an adjustable roller arm, which is suitable for a printer, such as but not limited to a wide-format printer, which can accurately and accurately implement the pressing roller and the driving roller. The parallelism between the two, and its low cost, easy maintenance, simple manufacturing, high reliability, effectively improve the problem of poor parallelism between the pressing roller and the driving roller, ensuring that the pressing roller and the driving roller are in full line contact and achieve a smooth The purpose of feeding the print media.
本案之另一目的在提供一種具可調式滾輪支臂之列印媒介饋送機構。藉由雙支架連接按壓滾輪而調整按壓滾輪與驅動滾輪之間的平行度，能達到改善列印媒介饋送機構中按壓滾輪及驅動滾輪因組裝而累積公差的問題，確保按壓滾輪與驅動滾輪之間的平行精度，使按壓滾輪與驅動滾輪彼此間維持平穩地按壓力，增加饋送列印媒介時的穩定性。 Another object of the present invention is to provide a print medium feed mechanism having an adjustable roller arm. By adjusting the parallelism between the pressing roller and the driving roller by connecting the roller to the double bracket, the problem of accumulating tolerances of the pressing roller and the driving roller in the printing medium feeding mechanism due to assembly can be improved, and the pressing roller and the driving roller are ensured. The parallel precision allows the pressing roller and the driving roller to maintain a smooth pressing force with each other, increasing the stability when feeding the printing medium.
為達前述目的，本案提供一種具可調式滾輪支臂之列印媒介饋送機構，其包括驅動轉軸及至少一按壓單元。按壓單元相對於驅動轉軸，且與驅動轉軸相配合，以饋送一列印媒介。其中按壓單元包括按壓轉軸、彈性組件、固定框架、第一支臂及第二支臂。固定框架包括第一側壁及第二側壁。第一側壁與第二側壁係彼此相對，且第一側壁包括一第一軸孔，第二側壁包括一第二軸孔與一限位槽。第一支臂包括第一轉軸，樞接於固定框架之第一側壁之第一軸孔。第一支臂的一端連接至彈性組件，另一端與按壓轉軸樞接，且第一支臂以第一轉軸為軸心受彈性組件作動，將按壓轉軸推壓向驅動轉軸。第二支臂包括偏心輪軸、一偏心輪穿孔及一限位軸，偏心輪軸穿設於偏心輪穿孔，且偏心輪軸之周緣與限位 軸之周緣相互推抵。第二支臂之偏心輪軸樞接於固定框架之第二側壁之第二軸孔，限位軸穿設於固定樞架之第二側壁之限位槽，其中第二支臂的一端與連接至彈性組件，另一端與按壓轉軸樞接。當偏心輪軸轉動時，偏心輪軸之周緣推抵限位軸之周緣，使第二支臂沿限位槽位移，且第二支臂以限位軸為軸心受彈性組件作動，將按壓轉軸推壓向驅動轉軸。 To achieve the foregoing objective, the present invention provides a printing medium feed mechanism having an adjustable roller arm that includes a drive shaft and at least one pressing unit. The pressing unit is coupled to the driving shaft and cooperates with the driving shaft to feed a line of printing medium. The pressing unit includes a pressing shaft, an elastic component, a fixing frame, a first arm and a second arm. The fixing frame includes a first side wall and a second side wall. The first side wall and the second side wall are opposite to each other, and the first side wall includes a first shaft hole, and the second side wall includes a second shaft hole and a limiting groove. The first arm includes a first rotating shaft and is pivotally connected to the first shaft hole of the first side wall of the fixing frame. One end of the first arm is connected to the elastic component, and the other end is pivotally connected to the pressing shaft, and the first arm is actuated by the elastic component with the first rotating shaft as an axis, and pushes the pressing shaft to the driving shaft. The second arm comprises an eccentric axle, an eccentric wheel perforation and a limiting shaft, the eccentric axle is threaded through the eccentric perforation, and the periphery and the limit of the eccentric axle The circumference of the shaft is pushed against each other. The eccentric axle of the second arm is pivotally connected to the second shaft hole of the second side wall of the fixed frame, and the limiting shaft is disposed through the limiting slot of the second side wall of the fixed pivot frame, wherein one end of the second arm is connected to The elastic component has the other end pivotally connected to the pressing shaft. When the eccentric shaft rotates, the periphery of the eccentric shaft pushes against the periphery of the limiting shaft, so that the second arm is displaced along the limiting slot, and the second arm is actuated by the elastic component with the limiting shaft as the axis, and the pressing shaft is pushed Press the drive shaft.
1、1a、1b、1c、1d、1e‧‧‧饋送機構 1, 1a, 1b, 1c, 1d, 1e‧‧‧ feed mechanism
2‧‧‧驅動轉軸 2‧‧‧Drive shaft
21‧‧‧驅動滾輪 21‧‧‧ drive roller
3‧‧‧按壓轉軸 3‧‧‧Press the shaft
31‧‧‧按壓滾輪 31‧‧‧Press the wheel
4‧‧‧彈性組件 4‧‧‧Flexible components
5‧‧‧固定框架 5‧‧‧Fixed frame
51‧‧‧第一側壁 51‧‧‧First side wall
511‧‧‧第一軸孔 511‧‧‧First shaft hole
512‧‧‧第一軸孔 512‧‧‧first shaft hole
513‧‧‧第三軸孔 513‧‧‧ Third Axial Hole
52‧‧‧第二側壁 52‧‧‧second side wall
521‧‧‧第二軸孔 521‧‧‧Second shaft hole
522‧‧‧限位槽 522‧‧‧Limited slot
6‧‧‧第一支臂 6‧‧‧First arm
61‧‧‧第一轉軸 61‧‧‧First shaft
611‧‧‧圓盤頭部 611‧‧‧ disc head
612‧‧‧頸部 612‧‧‧ neck
613‧‧‧擋止部 613‧‧‧stops
62‧‧‧第一樞接孔 62‧‧‧First pivot hole
63‧‧‧第一輔助限位槽 63‧‧‧First auxiliary limit slot
64‧‧‧偏心輪軸 64‧‧‧eccentric axle
641‧‧‧調整偏心盤部 641‧‧‧Adjusting the eccentric disk
642‧‧‧軸部 642‧‧‧Axis
643‧‧‧端部 643‧‧‧End
65‧‧‧偏心輪穿孔 65‧‧‧Eccentric wheel perforation
66‧‧‧彈性夾件 66‧‧‧Elastic clips
7‧‧‧第二支臂 7‧‧‧second arm
71‧‧‧偏心輪軸 71‧‧‧eccentric axle
711‧‧‧調整偏心盤部 711‧‧‧Adjust the eccentric disk
712‧‧‧軸部 712‧‧‧Axis
713‧‧‧端部 713‧‧‧End
713a‧‧‧擋止部 713a‧‧‧stop
72‧‧‧偏心輪穿孔 72‧‧‧Eccentric wheel perforation
73‧‧‧限位軸 73‧‧‧Limited axis
731‧‧‧圓盤頭部 731‧‧‧ disc head
732‧‧‧頸部 732‧‧‧ neck
733‧‧‧擋止端 733‧‧‧stop end
733a‧‧‧擋止部 733a‧‧‧stops
734‧‧‧鎖固件 734‧‧‧Locker
74‧‧‧第二樞接孔 74‧‧‧Second pivot hole
75‧‧‧彈性夾件 75‧‧‧Elastic clips
77‧‧‧第二輔助限位槽 77‧‧‧Second auxiliary limit slot
8‧‧‧輔助連桿 8‧‧‧Auxiliary connecting rod
9‧‧‧按壓單元 9‧‧‧ Press unit
AA‧‧‧線段 AA‧‧ ‧ line segment
BB‧‧‧線段 BB‧‧ ‧ line segment
△X‧‧‧間距 △X‧‧‧ spacing
第1圖係揭示本案第一較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。 1 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a first preferred embodiment of the present invention.
第2圖係揭示第1圖之具可調式滾輪支臂之列印媒介饋送機構之結構分解圖。 Figure 2 is a structural exploded view showing the printing medium feed mechanism of the adjustable roller arm of Figure 1.
第3A圖及第3B圖係揭示第1圖之饋送機構之偏心輪軸與限位軸之配置關係示意圖。 3A and 3B are schematic views showing the arrangement relationship between the eccentric shaft and the limit shaft of the feeding mechanism of Fig. 1.
第4A圖係揭示本案列印媒介饋送機構之驅動轉軸與按壓轉軸於未達平行推抵狀態之示意圖。 Fig. 4A is a view showing the state in which the driving shaft of the printing medium feeding mechanism and the pressing rotating shaft are not pushed in parallel.
第4B圖係第4A圖中沿AA線段之截面圖。 Figure 4B is a cross-sectional view taken along line AA of Figure 4A.
第4C圖係揭示本案列印媒介饋送機構調整驅動轉軸與按壓轉軸達平行推抵狀態之示意圖。 Fig. 4C is a schematic view showing that the printing medium feeding mechanism adjusts the driving shaft and the pressing shaft to a parallel pushing state.
第4D圖係第4C圖中沿BB線段之截面圖。 Fig. 4D is a cross-sectional view taken along line BB in Fig. 4C.
第5圖係揭示本案第二較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。 Figure 5 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a second preferred embodiment of the present invention.
第6圖係揭示本案第三較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。 Figure 6 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a third preferred embodiment of the present invention.
第7圖係揭示第6圖之具可調式滾輪支臂之列印媒介饋送機構之結構分解圖。 Fig. 7 is a structural exploded view showing the printing medium feeding mechanism of the adjustable roller arm of Fig. 6.
第8圖係揭示本案第四較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。 Figure 8 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a fourth preferred embodiment of the present invention.
第9圖係揭示本案第五較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。 Figure 9 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a fifth preferred embodiment of the present invention.
第10圖係揭示本案具可調式滾輪支臂之列印媒介饋送機構應用於一寬幅印表機之結構示意圖。 Figure 10 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm applied to a wide-format printer.
體現本案特徵與優點的一些典型實施例將在後段的說明中詳細敘述。應理解的是本案能夠在不同的態樣上具有各種的變化，其皆不脫離本案的範圍，且其中的說明及圖式在本質上係當作說明之用，而非用於限制本案。 Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in the various aspects of the present invention, and the description and drawings are intended to be illustrative and not limiting.
第1圖係揭示本案第一較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。第2圖係揭示第1圖之具可調式滾輪支臂之列印媒介饋送機構之結構分解圖。如第1圖及第2圖所示，本案具可調式滾輪支臂之列印媒介饋送機構1(以下簡稱饋送機構)係組裝應用於一印表機上，尤以一寬幅印表機為佳。本案之饋送機構1由一驅動轉軸2及至少一按壓單元9所構成。按壓單元9則包括至少一按壓轉軸3、至少一彈性組件4、固定框架5、第一支臂6以及第二支臂7。於本實施例中，驅動轉軸2為驅動滾輪21，而按壓轉軸3包括至少一按壓滾輪31，當驅動滾輪21轉動而驅動至少一按壓滾輪31轉動時，按壓滾輪31與驅動滾輪21之間可夾送一列印媒介(未圖示)，例如但不限於紙張。固定框架5包括第一側壁51及第二側壁52。其中第一側壁51與第二側壁52係彼此相對，且第一側壁51包 括第一軸孔511，第二側壁52包括第二軸孔521與一限位槽522。第一側壁51之第一軸孔511與第二側壁52之限位槽522係彼此相對。第一支臂6包括第一轉軸61及第一樞接孔62。第一轉軸61係以樞接方式設置於第一支臂6的中段，且樞接於固定框架5之第一側壁51之第一軸孔511。第一轉軸61包括圓盤頭部611、頸部612以及擋止部613，其中頸部612穿設第一軸孔511，圓盤頭部611與擋止部613分別設置於頸部612的兩相對端，且鉗合第一支臂6與固定框架5的第一側壁51，藉此使第一支臂6與固定框架5的第一側壁51可以第一轉軸61為軸心而相對轉動。第一支臂6的一端連接至彈性組件4，第一支臂6的另一端設有第一樞接孔62，其中按壓轉軸3之一端透過第一樞接孔62而與第一支臂6樞接。當第一支臂6之一端受彈性組件4之彈性拉力作用而抬昇時，即以第一轉軸61為軸心，使第一支臂6之另一端帶動按壓轉軸3推壓向驅動轉軸2。另一方面，第二支臂7包括偏心輪軸71、偏心輪穿孔72以及限位軸73。偏心輪軸71及偏心輪穿孔72設置於第二支臂7的中段。限位軸73則以樞接方式設置於第二支臂7的中段，且鄰設於偏心輪軸71及偏心輪穿孔72。偏心輪軸71包括調整偏心盤部711、軸部712以及端部713，其中軸部712穿設偏心輪穿孔72及固定框架5之第二側壁52之第二軸孔521，於一實施例中，軸部712之部份外周緣更塗佈例如是但不限於耐落(NYLOK)塗層之防滑材料(未圖示)，使偏心輪軸71樞接於第二軸孔521而不鬆脫。另外，偏心輪軸71的調整偏心盤部711與端部713分別設置於軸部712的兩相對端，且鉗合第二支臂7與固定框架5的第二側壁52。第二支臂7之限位軸73與第一支臂6之第一轉軸61相似，限位軸73之結構同樣包括圓盤頭部731、頸部732以及擋止端733。於本實施例中，擋止端733更包括一擋止部733a。頸部732穿設固定框架5之的第二側壁52之限位槽522，圓盤頭部731與擋止端733分別設置於頸部732的兩相對端，且鉗合 第二支臂7與固定框架5的第二側壁52。此外，偏心輪軸71之調整偏心盤部711之周緣與限位軸73之圓盤頭部731之周緣係彼此相互推抵。於本實施例中，第二支臂7的一端連接至彈性組件4，第二支臂7的另一端設有該第二樞接孔74，其中按壓轉軸3之另一端透過第二樞接孔74而與第二支臂7樞接。第3A圖及第3B圖更揭示第1圖之饋送機構之偏心輪軸與限位軸之配置關係示意圖。第二支臂7上之偏心輪軸71藉由調整偏心盤部711相對偏心輪軸71之軸部712轉動，以及調整偏心盤部711之周緣推抵限位軸73之圓盤頭部731之周緣，可使偏心輪軸71之軸部712中心與限位軸73之頸部732中心產生不同間距。換言之，由於偏心輪軸71之調整偏心盤部711之周緣與限位軸73之圓盤頭部731之周緣恆相互推抵，因此當偏心輪軸71被調整而轉動時，偏心輪軸71之調整偏心盤部711之周緣推抵限位軸73之圓盤頭部731之周緣，而改變第二支臂7之力矩平衡狀態，使第二支臂7沿限位槽522位移，同時為達力矩平衡，第二支臂7之一端會以限位軸73為軸心受彈性組件4之彈性拉力而抬昇，使第二支臂7之另一端帶動按壓轉軸3推壓向驅動轉軸2。 1 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a first preferred embodiment of the present invention. Figure 2 is a structural exploded view showing the printing medium feed mechanism of the adjustable roller arm of Figure 1. As shown in Fig. 1 and Fig. 2, the printing medium feeding mechanism 1 (hereinafter referred to as the feeding mechanism) having the adjustable roller arm is assembled and applied to a printer, especially a wide-format printer. good. The feeding mechanism 1 of the present invention is composed of a driving shaft 2 and at least one pressing unit 9. The pressing unit 9 includes at least one pressing shaft 3, at least one elastic component 4, a fixing frame 5, a first arm 6, and a second arm 7. In this embodiment, the driving shaft 2 is a driving roller 21, and the pressing shaft 3 includes at least one pressing roller 31. When the driving roller 21 rotates to drive at least one pressing roller 31 to rotate, the pressing roller 31 and the driving roller 21 can be A print medium (not shown) is clipped, such as but not limited to paper. The fixing frame 5 includes a first side wall 51 and a second side wall 52. Wherein the first side wall 51 and the second side wall 52 are opposite to each other, and the first side wall 51 is wrapped The first shaft hole 511 includes a second shaft hole 521 and a limiting groove 522. The first shaft hole 511 of the first side wall 51 and the limiting groove 522 of the second side wall 52 are opposite to each other. The first arm 6 includes a first rotating shaft 61 and a first pivoting hole 62. The first rotating shaft 61 is pivotally disposed at a middle portion of the first arm 6 and pivotally connected to the first shaft hole 511 of the first side wall 51 of the fixing frame 5 . The first rotating shaft 61 includes a disk head portion 611, a neck portion 612, and a stopping portion 613. The neck portion 612 is disposed through the first shaft hole 511, and the disk head portion 611 and the stopping portion 613 are respectively disposed on the neck portion 612. The first end arm 6 and the first side wall 51 of the fixing frame 5 are clamped, and the first arm 6 and the first side wall 51 of the fixing frame 5 are relatively rotatable about the first rotating shaft 61 as an axis. One end of the first arm 6 is connected to the elastic component 4, and the other end of the first arm 6 is provided with a first pivot hole 62, wherein one end of the pressing shaft 3 passes through the first pivot hole 62 and the first arm 6 Pivot. When one end of the first arm 6 is lifted by the elastic pulling force of the elastic component 4, that is, with the first rotating shaft 61 as the axis, the other end of the first arm 6 drives the pressing rotating shaft 3 to push against the driving shaft 2 . On the other hand, the second arm 7 includes an eccentric axle 71, an eccentric bore 72, and a limit shaft 73. The eccentric axle 71 and the eccentric bore 72 are disposed in the middle of the second arm 7. The limiting shaft 73 is pivotally disposed in the middle of the second arm 7 and adjacent to the eccentric shaft 71 and the eccentric bore 72. The eccentric axle 71 includes an eccentric disk portion 711, a shaft portion 712, and an end portion 713. The shaft portion 712 extends through the eccentric wheel hole 72 and the second shaft hole 521 of the second side wall 52 of the fixed frame 5. In an embodiment, A portion of the outer periphery of the shaft portion 712 is coated with, for example, but not limited to, a NYLOK coated non-slip material (not shown) to pivot the eccentric shaft 71 to the second shaft hole 521 without loosening. In addition, the eccentric disk portion 711 and the end portion 713 of the eccentric shaft 71 are respectively disposed at opposite ends of the shaft portion 712, and the second arm 7 and the second side wall 52 of the fixed frame 5 are clamped. The limiting shaft 73 of the second arm 7 is similar to the first rotating shaft 61 of the first arm 6. The structure of the limiting shaft 73 also includes a disc head 731, a neck 732 and a stopping end 733. In this embodiment, the stopping end 733 further includes a stopping portion 733a. The neck portion 732 is disposed through the limiting slot 522 of the second side wall 52 of the fixing frame 5. The disc head portion 731 and the stopping end portion 733 are respectively disposed at opposite ends of the neck portion 732, and are clamped. The second arm 7 and the second side wall 52 of the fixed frame 5. Further, the peripheral edge of the eccentric disk portion 711 of the eccentric shaft 71 and the peripheral edge of the disk head portion 731 of the limit shaft 73 are mutually pushed against each other. In this embodiment, one end of the second arm 7 is connected to the elastic component 4, and the other end of the second arm 7 is provided with the second pivot hole 74, wherein the other end of the pressing shaft 3 passes through the second pivot hole. 74 is pivotally connected to the second arm 7. 3A and 3B further illustrate the arrangement relationship between the eccentric shaft and the limit shaft of the feeding mechanism of Fig. 1. The eccentric shaft 71 on the second arm 7 is rotated by adjusting the eccentric disk portion 711 with respect to the shaft portion 712 of the eccentric shaft 71, and the periphery of the eccentric disk portion 711 is pushed against the periphery of the disk head portion 731 of the limit shaft 73. The center of the shaft portion 712 of the eccentric shaft 71 can be made to have a different pitch from the center of the neck portion 732 of the limit shaft 73. In other words, since the circumference of the eccentric disk portion 711 of the eccentric shaft 71 and the circumference of the disk head portion 731 of the limiting shaft 73 are constantly pushed against each other, when the eccentric shaft 71 is adjusted to rotate, the eccentric disk of the eccentric shaft 71 is adjusted. The circumference of the portion 711 is pushed against the circumference of the disc head 731 of the limiting shaft 73, and the moment balance state of the second arm 7 is changed, so that the second arm 7 is displaced along the limiting slot 522, and at the same time, the torque is balanced. One end of the second arm 7 is lifted by the elastic tension of the elastic member 4 with the limiting shaft 73 as the axis, and the other end of the second arm 7 pushes the pressing shaft 3 to push the driving shaft 2.
第4A圖至第4D圖更進一步揭示本案具可調式滾輪支臂之列印媒介饋送機構之作動示意圖。其中第4A圖係揭示本案列印媒介饋送機構之驅動轉軸與按壓轉軸於未達平行推抵狀態之示意圖。第4B圖係第4A圖中沿AA線段之截面圖。第4C圖係揭示本案列印媒介饋送機構調整驅動轉軸與按壓轉軸達平行推抵狀態之示意圖。第4D圖係第4C圖中沿BB線段之截面圖。首先，如第4A圖及第4B圖所示，當驅動轉軸2發生偏移時，按壓轉軸3上之按壓滾輪31無法完全與驅動滾輪21達平行推抵，部份按壓滾輪31更與驅動滾輪21間存有△X的間距。於此狀態下，饋送機構1無法平順饋送列印媒介，且易使列印媒介發生歪斜或受損。此時，本案之饋送機構1藉由轉動調整偏心輪軸71，即可使按壓轉軸3上之按壓滾 輪31與驅動滾輪21趨於平行。由於偏心輪軸71之調整偏心盤部711之周緣與限位軸73之圓盤頭部731之周緣恆相互推抵，所以當偏心輪軸71被調整轉動時，偏心輪軸71之調整偏心盤部711之周緣推抵限位軸73之圓盤頭部731之周緣，使第二支臂7沿限位槽522而相對於固定框架5移動並趨離彈性組件4，增加彈性組件4對第二支臂7一端之力矩。此時，第二支臂7會以限位軸73為軸心且因應彈性組件4增加之力矩，將樞接於第二支臂7的按壓轉軸3向下推壓向驅動轉軸2。一旦按壓轉軸3上之按壓滾輪31向下位移△X後，即與驅動轉軸2之驅動滾輪21接觸並形成平行推抵，即如第4C圖與第4D圖所示。因此，本案饋送機構1透過前述調整與作動，即能達到改善饋送機構1中按壓滾輪31及驅動滾輪21因組裝或長期使用而累積公差的問題，確保按壓滾輪31與驅動滾輪21之間的平行精度，使按壓滾輪31與驅動滾輪21彼此間維持平穩地按壓力，增加饋送列印媒介時的穩定性。 4A to 4D further illustrate the operation of the printing medium feeding mechanism of the present invention with an adjustable roller arm. 4A is a schematic view showing the driving shaft and the pressing shaft of the printing medium feeding mechanism in the case of not reaching the parallel pushing state. Figure 4B is a cross-sectional view taken along line AA of Figure 4A. Fig. 4C is a schematic view showing that the printing medium feeding mechanism adjusts the driving shaft and the pressing shaft to a parallel pushing state. Fig. 4D is a cross-sectional view taken along line BB in Fig. 4C. First, as shown in FIGS. 4A and 4B, when the driving shaft 2 is displaced, the pressing roller 31 on the pressing shaft 3 cannot be completely pushed in parallel with the driving roller 21, and the partial pressing roller 31 is further driven to the driving roller. 21 spaces have a spacing of △X. In this state, the feeding mechanism 1 cannot smoothly feed the printing medium, and the printing medium is liable to be skewed or damaged. At this time, the feeding mechanism 1 of the present case can press the eccentric shaft 71 to rotate the pressing roller 3 The wheel 31 and the drive roller 21 tend to be parallel. Since the circumference of the eccentric disk portion 711 of the eccentric shaft 71 and the periphery of the disk head portion 731 of the limiting shaft 73 are constantly pushed against each other, when the eccentric shaft 71 is adjusted to rotate, the eccentric disk portion 71 is adjusted by the eccentric disk portion 711. The periphery pushes against the periphery of the disc head 731 of the limiting shaft 73, so that the second arm 7 moves along the limiting groove 522 relative to the fixed frame 5 and away from the elastic component 4, and the elastic component 4 is added to the second arm. 7 moment of the moment. At this time, the second arm 7 pivots the pressing shaft 3 pivotally connected to the second arm 7 to the driving shaft 2 with the limiting shaft 73 as the axis and corresponding to the increased torque of the elastic assembly 4. Once the pressing roller 31 on the rotating shaft 3 is pressed downward by ΔX, it is brought into contact with the driving roller 21 of the driving shaft 2 to form a parallel pushing, as shown in Figs. 4C and 4D. Therefore, the feeding mechanism 1 of the present invention can achieve the problem of improving the tolerance of the pressing roller 31 and the driving roller 21 in the feeding mechanism 1 due to assembly or long-term use, and ensuring the parallel between the pressing roller 31 and the driving roller 21. The precision is such that the pressing roller 31 and the driving roller 21 maintain a smooth pressing force with each other to increase the stability when feeding the printing medium.
另一方面，於本實施例中，為維持偏心輪軸71之調整偏心盤部711之周緣與限位軸73之圓盤頭部731之周緣彼此相互推抵，偏心輪軸71與限位軸73之間更包括一彈性夾件75，連接並設置於偏心輪軸71之端部713與限位軸73之擋止端733，以組配使偏心輪軸71之調整偏心盤部711之周緣與限位軸73之圓盤頭部731之周緣維持推抵。第5圖係揭示本案第二較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。於本實施例中，饋送機構1a係與第1圖及第2圖所示之饋送機構1相似，且相同的元件標號代表相同之元件、結構與功能，於此不再贅述。不同於第1圖及第2圖所示之饋送機構1，於本實施例中，偏心輪軸71之端部713更設有擋止部713a。第二支臂7之限位軸73更包括鎖固件734，設置於限位軸73之擋止端733，以組配於偏心輪軸71之調整偏心盤部711之周緣調整推抵限位軸73之圓盤頭部731之周緣時可釋放限位軸73，使第二支臂7可沿限位 槽522而相對於固定框架5移動，且於偏心輪軸71完成調整時，將限位軸73鎖固於固定框架5之限位槽522。 On the other hand, in the present embodiment, in order to maintain the periphery of the eccentric disk portion 711 of the eccentric shaft 71 and the periphery of the disk head portion 731 of the limiting shaft 73, the eccentric shaft 71 and the limiting shaft 73 are pushed against each other. Further, a resilient clip member 75 is further disposed and disposed on the end portion 713 of the eccentric shaft 71 and the stopping end 733 of the limiting shaft 73 to assemble the periphery and the limiting shaft of the eccentric disk portion 711 of the eccentric shaft 71. The circumference of the disc head 731 of 73 is maintained. Figure 5 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a second preferred embodiment of the present invention. In the present embodiment, the feeding mechanism 1a is similar to the feeding mechanism 1 shown in FIGS. 1 and 2, and the same reference numerals are given to the same elements, structures, and functions, and will not be described again. Unlike the feeding mechanism 1 shown in Figs. 1 and 2, in the present embodiment, the end portion 713 of the eccentric shaft 71 is further provided with a stopper portion 713a. The limiting shaft 73 of the second arm 7 further includes a locking member 734 disposed on the stopping end 733 of the limiting shaft 73 to adjust the pushing limit of the limiting shaft 73 to the periphery of the adjusting eccentric disk portion 711 of the eccentric shaft 71. When the periphery of the disc head 731 is at the periphery, the limiting shaft 73 can be released, so that the second arm 7 can be along the limit The slot 522 is moved relative to the fixed frame 5, and when the eccentric axle 71 is adjusted, the limiting shaft 73 is locked to the limiting slot 522 of the fixed frame 5.
請再參閱第1圖、第2圖及第5圖，於一些實施例中，饋送機構1及1a之第一支臂6與第二支臂7分別包括第一輔助限位槽63及第二輔助限位槽77，第一輔助限位槽63及第二輔助限位槽77係彼此相對，且饋送機構1及1a更包括一輔助連桿8，透過第一輔助限位槽63及第二輔助限位槽77而樞接於第一支臂6與第二支臂7之間。透過輔助連桿8之設置，饋紙機構1及1a中固定框架5、第一支臂6與第二支臂7間之作動可更為穩固。 Referring to FIG. 1 , FIG. 2 and FIG. 5 again, in some embodiments, the first arm 6 and the second arm 7 of the feeding mechanisms 1 and 1a respectively include a first auxiliary limiting slot 63 and a second. The auxiliary limiting slot 77, the first auxiliary limiting slot 63 and the second auxiliary limiting slot 77 are opposite to each other, and the feeding mechanisms 1 and 1a further comprise an auxiliary connecting rod 8 through the first auxiliary limiting slot 63 and the second The auxiliary limiting slot 77 is pivotally connected between the first arm 6 and the second arm 7 . Through the arrangement of the auxiliary link 8, the movement between the fixed frame 5, the first arm 6 and the second arm 7 in the paper feeding mechanisms 1 and 1a can be more stable.
第6圖係揭示本案第三較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。第7圖係揭示第6圖之具可調式滾輪支臂之列印媒介饋送機構之結構分解圖。於本實施例中，饋送機構1b係與第1圖及第2圖所示之饋送機構1相似，且相同的元件標號代表相同之元件、結構與功能，於此不再贅述。不同於第1圖及第2圖所示之饋送機構1，於本實施例之饋送機構1b中，固定框架5之第一側壁51之第一軸孔512為另一限位槽，相對於第二側壁52之限位槽522。此外，第一側壁51更包括一相對於第二側壁52之第二軸孔521之第三軸孔513。第一支臂6更包括偏心輪軸64以及偏心輪穿孔65。偏心輪軸64與第一轉軸61之間更包括彈性夾件66，連接並設置於偏心輪軸64之端部643與第一轉軸61之擋止部613，以組配使偏心輪軸64之調整偏心盤部641之周緣與第一轉軸61之圓盤頭部611之周緣恆推抵。第一支臂6之第一偏心輪軸64及偏心輪穿孔65與第二支臂7之偏心輪軸71及偏心輪穿孔72相同。換言之，第一支臂6與第二支臂7之各組件於固定框架5之兩側呈鏡像對稱。因此，當按壓滾輪31與驅動滾輪21於第一支臂6端具有間隙差距而無法完全平行推抵時，藉由轉動調整第一支臂6上之偏心輪軸64之 調整偏心盤部641之周緣推抵第一轉軸61之圓盤頭部611之周緣，使第一支臂6沿呈限位槽結構之第一軸孔512而相對於固定框架5移動並趨離彈性組件4，增加彈性組件4對第一支臂6一端之力矩。此時，第一支臂6會以第一轉軸61為軸心且因應彈性組件4增加之力矩，將樞接於第一支臂6的按壓轉軸3向下推壓向驅動轉軸2，使按壓滾輪31與驅動轉軸2之驅動滾輪21接觸並形成平行推抵。透過第一支臂6與第二支臂7之調整機構，使饋送機構1b可更為精密及準確地實現按壓滾輪及驅動滾輪之間的平行度。且鏡像對稱的結構，有利於降低生產成本，且具有易維護、製造簡單及可靠度高等優點。藉此，本案之饋送機構1b更可有效改善按壓滾輪與驅動滾輪組裝後平行度不佳的問題，確保按壓滾輪與驅動滾輪完全線接觸，並達到平穩地饋送列印媒介的目的。 Figure 6 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a third preferred embodiment of the present invention. Fig. 7 is a structural exploded view showing the printing medium feeding mechanism of the adjustable roller arm of Fig. 6. In the present embodiment, the feeding mechanism 1b is similar to the feeding mechanism 1 shown in FIGS. 1 and 2, and the same component numbers denote the same elements, structures, and functions, and will not be described again. Different from the feeding mechanism 1 shown in FIG. 1 and FIG. 2, in the feeding mechanism 1b of the embodiment, the first shaft hole 512 of the first side wall 51 of the fixing frame 5 is another limiting slot, relative to the first The limiting groove 522 of the two side walls 52. In addition, the first sidewall 51 further includes a third shaft hole 513 opposite to the second shaft hole 521 of the second sidewall 52. The first arm 6 further includes an eccentric axle 64 and an eccentric bore 65. The eccentric axle 64 and the first rotating shaft 61 further comprise an elastic clamping member 66 connected to the end portion 643 of the eccentric shaft 64 and the stopping portion 613 of the first rotating shaft 61 for assembling the eccentric disk of the eccentric shaft 64. The periphery of the portion 641 is constantly pushed against the periphery of the disk head portion 611 of the first rotating shaft 61. The first eccentric axle 64 and the eccentric bore 65 of the first arm 6 are identical to the eccentric axle 71 and the eccentric bore 72 of the second arm 7. In other words, the components of the first arm 6 and the second arm 7 are mirror-symmetrical on both sides of the fixed frame 5. Therefore, when the pressing roller 31 and the driving roller 21 have a gap gap at the end of the first arm 6 and cannot be pushed completely in parallel, the eccentric shaft 64 on the first arm 6 is adjusted by rotation. The circumference of the eccentric disk portion 641 is pushed against the periphery of the disk head portion 611 of the first rotating shaft 61, so that the first arm 6 moves relative to the fixed frame 5 along the first axial hole 512 of the limiting groove structure and moves away from the fixed frame 5 The elastic component 4 increases the moment of the elastic component 4 to one end of the first arm 6. At this time, the first arm 6 pivots the pressing shaft 3 pivotally connected to the first arm 6 to the driving shaft 2 with the first rotating shaft 61 as the axis and corresponding to the increased torque of the elastic assembly 4, so as to press The roller 31 is in contact with the drive roller 21 of the drive shaft 2 and forms a parallel push. Through the adjustment mechanism of the first arm 6 and the second arm 7, the feeding mechanism 1b can more accurately and accurately achieve the parallelism between the pressing roller and the driving roller. The mirror-symmetric structure is beneficial to reduce production costs, and has the advantages of easy maintenance, simple manufacturing, and high reliability. Thereby, the feeding mechanism 1b of the present invention can effectively improve the problem of poor parallelism between the pressing roller and the driving roller, ensure that the pressing roller is in full line contact with the driving roller, and achieve the purpose of smoothly feeding the printing medium.
第8圖係揭示本案第四較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。於本實施例中，饋送機構1c係與第6圖及第7圖所示之饋送機構1相似，且相同的元件標號代表相同之元件、結構與功能，於此不再贅述。不同於第6圖及第7圖所示之饋送機構1b，於本實施例之饋送機構1c中，更省略前述實施例中之輔助連桿8。應強調的是，該輔助連桿8非限制本案特徵之條件。本案並不以此為限，且不再贅述。另一方面，前述實施例中，彈性組件4均係由一組彈簧構成，提供第一支臂6與第二支臂7一端之拉彈。當然，本案彈性組件4可為之實施態樣並不受於此。第9圖係揭示本案第五較佳實施例之具可調式滾輪支臂之列印媒介饋送機構之結構示意圖。於本實施例中，饋送機構1d之彈性組件4則以一扭簧構成。惟彈性組件4之構成亦非限制本案特徵之條件。本案並不以此為限，且不再贅述。 Figure 8 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a fourth preferred embodiment of the present invention. In the present embodiment, the feeding mechanism 1c is similar to the feeding mechanism 1 shown in FIGS. 6 and 7, and the same component numbers denote the same elements, structures and functions, and will not be described again. Unlike the feeding mechanism 1b shown in Figs. 6 and 7, in the feeding mechanism 1c of the present embodiment, the auxiliary link 8 in the foregoing embodiment is further omitted. It should be emphasized that the auxiliary link 8 does not limit the conditions of the features of the present invention. This case is not limited to this, and will not be repeated. On the other hand, in the foregoing embodiment, the elastic members 4 are each composed of a set of springs, and the first arm 6 and the second arm 7 are pulled at one end. Of course, the elastic component 4 of the present invention can be implemented without being affected by this. Figure 9 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm according to a fifth preferred embodiment of the present invention. In the present embodiment, the elastic member 4 of the feeding mechanism 1d is constituted by a torsion spring. However, the composition of the elastic component 4 is not a condition limiting the features of the present invention. This case is not limited to this, and will not be repeated.
據此，前述實施例中，具可調式滾輪支臂之列印媒介饋送機構1均係組裝應用於一印表機上，尤以一寬幅印表機為佳。第10圖係揭示本案具可調式滾輪支臂之列印媒介饋送機構應用於一寬幅印表機之結構示意圖。如圖所示，於一寬幅印表機之列印媒介饋送機構1e中，該列印媒介饋送機構1e包括單一驅動轉軸2以及複數個按壓單元9，其中該複數個按壓單元9係相間隔地設置，且分別對應於該驅動轉軸2，其中按壓單元9之各元件、結構及功能係與前述實施例相似，於此不再贅述。於本實施例中，每個按壓單元9之按壓滾輪31均可各自分別獨立地調整與驅動滾輪21的平行度。藉此，更利於寬幅印表機之列印媒介饋送機構1e針對寬幅列印媒介調整最佳的平行度。於一些實施例，寬幅印表機之列印媒介饋送機構1e中，複數個按壓單元9可為相同之按壓單元9，或不同之按壓單元9，且可依實際應用需求而變化。 Accordingly, in the foregoing embodiment, the printing medium feeding mechanism 1 having the adjustable roller arms is assembled and applied to a printer, especially a wide-format printer. Figure 10 is a schematic view showing the structure of a printing medium feeding mechanism with an adjustable roller arm applied to a wide-format printer. As shown, in the printing medium feeding mechanism 1e of a wide-format printer, the printing medium feeding mechanism 1e includes a single driving shaft 2 and a plurality of pressing units 9, wherein the plurality of pressing units 9 are spaced apart The components are arranged to be corresponding to the driving shaft 2, wherein the components, structures and functions of the pressing unit 9 are similar to the previous embodiments, and details are not described herein. In the present embodiment, the pressing rollers 31 of each pressing unit 9 can each independently adjust the parallelism with the driving roller 21. Thereby, the printing medium feeding mechanism 1e, which is more advantageous for the wide-format printer, adjusts the optimum parallelism for the wide-format printing medium. In some embodiments, in the printing medium feeding mechanism 1e of the wide-format printer, the plurality of pressing units 9 may be the same pressing unit 9, or different pressing units 9, and may be changed according to actual application requirements.
綜上所述，本案提供一種具可調式滾輪支臂之列印媒介饋送機構，其係適用於一寬幅印表機，可精密及準確地實現按壓滾輪及驅動滾輪之間的平行度，且其成本低、易維護、製造簡單、可靠度高，有效改善按壓滾輪與驅動滾輪組裝後平行度不佳的問題，確保按壓滾輪與驅動滾輪完全線接觸，並達到平穩地饋送列印媒介的目的。藉由雙支架連接按壓滾輪而調整按壓滾輪與驅動滾輪之間的平行度，能達到改善列印媒介饋送機構中按壓滾輪及驅動滾輪因組裝而累積公差的問題，確保按壓滾輪與驅動滾輪之間的平行精度，使按壓滾輪與驅動滾輪彼此間維持平穩地按壓力，增加饋送列印媒介時的穩定性。 In summary, the present invention provides a printing medium feeding mechanism with an adjustable roller arm, which is suitable for a wide-format printer, and can accurately and accurately achieve the parallelism between the pressing roller and the driving roller, and The utility model has the advantages of low cost, easy maintenance, simple manufacture and high reliability, and effectively improves the problem of poor parallelism between the pressing roller and the driving roller, ensures complete contact between the pressing roller and the driving roller, and achieves the purpose of smoothly feeding the printing medium. . By adjusting the parallelism between the pressing roller and the driving roller by connecting the roller to the double bracket, the problem of accumulating tolerances of the pressing roller and the driving roller in the printing medium feeding mechanism due to assembly can be improved, and the pressing roller and the driving roller are ensured. The parallel precision allows the pressing roller and the driving roller to maintain a smooth pressing force with each other, increasing the stability when feeding the printing medium.
本案得由熟習此技術之人士任施匠思而為諸般修飾，然皆不脫如附申請專利範圍所欲保護者。 This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105139376A TWI650250B (en) | 2016-11-30 | 2016-11-30 | Print media feeding mechanism having adjustable roller holders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105139376A TWI650250B (en) | 2016-11-30 | 2016-11-30 | Print media feeding mechanism having adjustable roller holders |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201821293A TW201821293A (en) | 2018-06-16 |
| TWI650250B true TWI650250B (en) | 2019-02-11 |
Family
ID=63258373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW105139376A TWI650250B (en) | 2016-11-30 | 2016-11-30 | Print media feeding mechanism having adjustable roller holders |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI650250B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111196514B (en) * | 2018-11-16 | 2021-12-14 | 东友科技股份有限公司 | Roller structure |
| TWI726257B (en) * | 2018-11-16 | 2021-05-01 | 東友科技股份有限公司 | Roller structure |
| CN112976837B (en) * | 2019-12-13 | 2022-05-31 | 东友科技股份有限公司 | Detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1717362A (en) * | 2002-11-29 | 2006-01-04 | 索尼株式会社 | Printer |
| JP2010076263A (en) * | 2008-09-26 | 2010-04-08 | Mitsubishi Electric Corp | Positioning mechanism for platen roller and printer equipped therewith |
| US8430401B1 (en) * | 2012-01-06 | 2013-04-30 | Primax Electronics, Ltd. | Paper deskew device for automatic document feeder |
| TWI476140B (en) * | 2011-03-16 | 2015-03-11 | Lite On Electronics Guangzhou | Feeding unit for normal paper document and thicker media and medium processing apparatus having the same |
-
2016
- 2016-11-30 TW TW105139376A patent/TWI650250B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1717362A (en) * | 2002-11-29 | 2006-01-04 | 索尼株式会社 | Printer |
| JP2010076263A (en) * | 2008-09-26 | 2010-04-08 | Mitsubishi Electric Corp | Positioning mechanism for platen roller and printer equipped therewith |
| TWI476140B (en) * | 2011-03-16 | 2015-03-11 | Lite On Electronics Guangzhou | Feeding unit for normal paper document and thicker media and medium processing apparatus having the same |
| US8430401B1 (en) * | 2012-01-06 | 2013-04-30 | Primax Electronics, Ltd. | Paper deskew device for automatic document feeder |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201821293A (en) | 2018-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI650250B (en) | Print media feeding mechanism having adjustable roller holders | |
| US8079589B2 (en) | Sheet conveying apparatus and image forming apparatus | |
| KR860002152Y1 (en) | Thermal head supporter | |
| TWI451980B (en) | Pressure adjusting mechanism for adjusting pressure of a thermal print head and thermal sublimation printer therewith | |
| JPH0872360A (en) | Thermal printer | |
| TWI622500B (en) | Print media feeding mechanism capable of adjusting pressing force | |
| JPH05229710A (en) | Web-supporting roller | |
| US6398434B1 (en) | Shaft assembly for applying an adjustable load to a thermal print head | |
| CN108116061B (en) | The print media feed mechanism of adjustable idler wheel pressing force | |
| JP2008290459A (en) | Transfer cylinder for sending sheet in a printing machine | |
| US5651488A (en) | Pressure-roller arrangement for a stacking device of a printer or copier | |
| JP4666602B2 (en) | Thermal transfer printer and torque limiter | |
| JP2007197209A (en) | Band-shaped continuous body supply device | |
| JP4111819B2 (en) | Printer | |
| CN108116062B (en) | Print media feed mechanism with adjustable contact roller support arm | |
| JP5640408B2 (en) | Paper transport device and image forming apparatus of image forming apparatus | |
| TWI496695B (en) | Adjustable sheet-separating structure | |
| JP6251245B2 (en) | Ink apparatus having adjustment of roller by bending plate and adjustment method | |
| JP4628859B2 (en) | Thermal head positioning mechanism and thermal printer | |
| US8436879B2 (en) | Thermal head mechanism, printing device using the same, and method of supporting thermal head | |
| JPS6090788A (en) | Paper-feeding mechanism for printer | |
| JPH055013Y2 (en) | ||
| JPH0639981Y2 (en) | Serial thermal printer | |
| JP5139780B2 (en) | Sheet roll holding mechanism, printing apparatus, and core tube | |
| JP6865595B2 (en) | Support structure of guide shaft member and thermal transfer printing device provided with this |