TW201919918A - Printing unit and thermal printer - Google Patents
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本發明，係關於印字單元以及熱列印機。The present invention relates to a printing unit and a thermal printer.
例如，於熱列印機具備有印字單元。印字單元，係使可動刀刃從待命位置移動至切斷位置，藉此以可動刀刃及固定刀刃將紙切斷。因使可動刀刃移動至切斷位置，可能導致可動刀刃與固定刀刃之間發生夾紙(亦即卡紙)，而使可動刀刃停止在乘載於固定刀刃的位置。在此情形，已知有為了解除夾紙，藉由對於操作桿進行操作，使可動刀刃與固定刀刃之間產生間隙的構成。藉由使可動刀刃與固定刀刃之間產生間隙，能夠消除夾紙的負荷。藉由消除夾紙的負荷，能夠使可動刀刃藉由彈簧的回復力回到起始位置(以下稱為待命位置)。 然而，就使可動刀刃與固定刀刃之間產生間隙的構成而言，在發生比間隙更大的夾紙的情形，難以完全消除夾紙的負荷。因此，即便藉由操作桿之1次操作在使固定刀刃與可動刀刃之間產生間隙，亦有可動刀刃無法回歸之虞。在此情形，有必要對於操作桿進行多次操作以解除夾紙，故可謂夾紙的解除性低。 另外，若無法解除夾紙，則無法解除可動刀刃停止在乘載於固定刀刃的位置的狀態。因此，無法開啟安裝有固定刀刃的列印機的罩體。亦即，無法使固定刀刃及可動刀刃露出至外部。因此，在發生比間隙更大的夾紙的情形，難以解除夾紙，由此觀點而言尚有改良之餘地。 因此，對於該種印字單元以及熱列印機，有能夠使夾紙輕易解除之需求。For example, a hot stamping machine is provided with a printing unit. The printing unit moves the movable blade from the standby position to the cutting position, thereby cutting the paper with the movable blade and the fixed blade. When the movable blade is moved to the cutting position, a paper jam (ie, a paper jam) may occur between the movable blade and the fixed blade, and the movable blade may be stopped at a position where it is carried by the fixed blade. In this case, it is known to form a gap between the movable blade and the fixed blade by operating the operation lever in order to release the paper jam. By creating a gap between the movable blade and the fixed blade, the load of the paper jam can be eliminated. By eliminating the load of the paper jam, the movable blade can be returned to the home position (hereinafter referred to as a standby position) by the restoring force of the spring. However, in the case where a gap is formed between the movable blade and the fixed blade, it is difficult to completely eliminate the load of the paper jam in the case where a paper jam larger than the gap occurs. Therefore, even if a gap is formed between the fixed blade and the movable blade by one operation of the operating lever, there is a possibility that the movable blade cannot return. In this case, it is necessary to perform a plurality of operations on the operating lever to release the paper jam, so that the release of the paper jam is low. Further, if the paper jam cannot be released, the state in which the movable blade is stopped at the position of the fixed blade cannot be released. Therefore, the cover of the printer to which the fixed blade is attached cannot be opened. That is, the fixed blade and the movable blade cannot be exposed to the outside. Therefore, in the case where a paper jam larger than the gap occurs, it is difficult to release the paper jam, and there is still room for improvement from the viewpoint. Therefore, for such a printing unit and a hot printing machine, there is a need for enabling the paper to be easily released.
本發明之一形態之印字單元，係具備：頭部單元，係具有對於記錄紙進行印字的熱感頭；載台單元，係具有搬運前述記錄紙的載台滾輪，以能夠分離的方式組裝於前述頭部單元；固定刀刃，係設置於前述頭部單元及前述載台單元之任一方；可動刀刃，係設置於前述頭部單元及前述載台單元之任另一方，對於前述固定刀刃進行滑移移動；驅動機構，係使前述可動刀刃在遠離前述固定刀刃的待命位置與乘載於前述固定刀刃的切斷位置之間滑移移動；解除鎖定操作桿，係解除前述載台單元對於前述頭部單元的鎖定；以及回歸機構，係在前述可動刀刃停止於前述切斷位置的狀態，與前述解除鎖定操作桿連動，在解除前述載台單元的鎖定之前使前述可動刀刃移動至前述待命位置。 另外，本發明之一形態之印字單元，係：前述回歸機構，係具備：回歸齒條，係形成於前述驅動機構的驅動齒條；以及回歸小齒輪，係嚙合於前述回歸齒條的齒條齒(rack tooth)，並能夠連動於前述解除鎖定操作桿。 另外，本發明之一形態之印字單元，係：前述回歸機構，係具備：第1齒輪及太陽齒輪，係於前述解除鎖定操作桿的旋轉中心在同軸上旋轉自如地被支承；行星齒輪，係以嚙合於前述太陽齒輪的方式旋轉自如地被支承，並且追隨前述解除鎖定操作桿的移動進行公轉；以及內齒輪，係嚙合於前述行星齒輪；前述第1齒輪，係形成為能夠嚙合於前述回歸小齒輪。 另外，本發明之一形態之印字單元，係：前述回歸齒條，係具有：齒條齒，係以在前述回歸齒條配置於前述切斷位置的狀態與前述回歸小齒輪嚙合，在前述回歸齒條配置於前述待命位置的狀態解除與前述回歸小齒輪的嚙合的方式，形成於前述可動刀刃的刀尖的相反側。 另外，本發明之一形態之印字單元，係：前述回歸小齒輪，係旋轉自如地設置在嚙合於前述驅動齒條的前述驅動機構的驅動小齒輪的支承軸。 另外，本發明之一形態之印字單元，係：前述回歸小齒輪，係去除了小齒輪齒當中的1齒。 另外，本發明之一形態之印字單元，係：前述第1齒輪，係具有：第1齒部，係能夠首先嚙合於前述回歸小齒輪，並且能夠退避至徑方向內側。 另外，本發明之一形態之印字單元，係：具有本發明之一形態之前述印字單元的熱列印機，係：在具有收容前述記錄紙的記錄紙收容部的列印機本體設置有前述可動刀刃，並且，在能夠轉動地連結於前述列印機本體並開閉前述記錄紙收容部的列印機罩設置有前述固定刀刃。A printing unit according to an aspect of the present invention includes: a head unit having a thermal head for printing on recording paper; and a stage unit having a stage roller for transporting the recording paper, and being detachably assembled The head unit; the fixed blade is disposed on one of the head unit and the stage unit; and the movable blade is disposed on the other of the head unit and the stage unit, and slides the fixed blade a moving mechanism that causes the movable blade to slide between a standby position away from the fixed blade and a cutting position that is loaded on the fixed blade; releasing the locking lever to release the carrier unit from the head The locking unit and the returning mechanism move the movable blade to the standby position before releasing the lock of the stage unit in a state in which the movable blade is stopped at the cutting position. Further, in the printing unit according to the aspect of the invention, the regression mechanism includes: a return rack, a drive rack formed on the drive mechanism; and a return pinion that meshes with the rack of the return rack A rack tooth and capable of interlocking with the aforementioned unlocking lever. Further, in the printing unit according to the first aspect of the present invention, the first gear and the sun gear are rotatably supported coaxially on a rotation center of the unlocking operation lever; Rotating and rotatably supporting the sun gear, and reorienting following the movement of the unlocking lever; and the internal gear meshing with the planetary gear; the first gear is formed to be engageable with the return gear. Further, in the printing unit according to the aspect of the invention, the returning rack has: a rack tooth that meshes with the return pinion in a state in which the return rack is disposed at the cutting position, and the return A state in which the rack is disposed at the standby position and the meshing with the return pinion is released is formed on the opposite side of the blade edge of the movable blade. Further, in the printing unit according to the aspect of the invention, the return pinion is rotatably provided on a support shaft of a drive pinion that meshes with the drive mechanism of the drive rack. Further, in the printing unit according to an aspect of the present invention, the return pinion includes one tooth among the pinion teeth. Further, in the printing unit according to the first aspect of the invention, the first gear includes a first tooth portion that can be meshed with the return pinion first and can be retracted to the inner side in the radial direction. Further, a printing unit according to one aspect of the invention is the hot printing machine having the printing unit according to the aspect of the invention, wherein the printer main body having the recording paper accommodating portion for accommodating the recording paper is provided with the aforementioned The movable blade is provided with the fixed blade in a printing machine cover that is rotatably coupled to the printer body and that opens and closes the recording paper storage portion.
以下，根據圖式對本發明之第1實施形態進行說明。 第1圖，係表示列印機罩3的閉位置之熱列印機1的立體圖。第2圖，係表示列印機罩3的開位置之熱列印機1的立體圖。如第1圖、第2圖所示，熱列印機1，係對於從捲筒紙R拉出的記錄紙P(感熱紙、紙)進行印刷，並將記錄紙P利用作為票券或收據等的列印機。熱列印機1，係具備：殼體(列印機本體)2、列印機罩3、設置於列印機罩3側的載台單元4、設置於殼體2側的頭部單元5。以載台單元4及頭部單元5構成印字單元8。 又，於實施形態中，在第1圖所示之列印機罩3的閉位置，將相對於紙面的左下側(列印機罩3側)作為前方(箭號FW方向)、右上側(殼體2側)作為後方(箭號BA方向)、上側作為上方、下側作為下方。另外，記錄紙P係朝向前方FW被排出。並且，將正交於前後方向L1及上下方向L2的方向作為左右方向L3。因此，在各圖中亦有各方向相反的情形。 殼體2，係藉由樹脂材料或金屬材料，或是適當組合該等，而形成於前方FW開口的方塊狀。殼體2，係藉由作為基本骨架的框架體，以及覆蓋框架體的外裝罩構成。於殼體2的內部，形成有收容了捲筒紙R的記錄紙收容部10，藉由開啟列印機罩3使記錄紙收容部10開放。記錄紙收容部10，係藉由前述之框架體的一部分構成且朝向前方FW開口的箱型，並在內側以使寬度方向一致於左右方向L3一致的狀態收容有捲筒紙R。 另外，於殼體2的開口邊緣的下部，配置有沿著左右方向L3延伸的第1轉動軸11。於第1轉動軸11，列印機罩3對於殼體2以能夠轉動的方式進行連結。列印機罩3，係能夠在閉塞殼體2的開口部的閉位置(第1圖的位置)與開放殼體2的開口部的開位置(第2圖的位置)之間以90度左右的角度範圍進行轉動。藉此，於殼體2的開口部(亦即記錄紙收容部10)藉由列印機罩3被開閉。在列印機罩3為開位置時記錄紙收容部10被開放，而例如能夠將捲筒紙R投入記錄紙收容部10內(即所謂投入(drop-in)式)。 另外，熱列印機1，係構成為：在列印機罩3的閉位置，於列印機罩3的前端部與殼體2之間，隔有些微的間隔。記錄紙P，係利用該間隙從殼體2的內部朝向前方FW被拉出。因此，該些微的間隙係發揮作為記錄紙P的排出口12的功能。又，殼體2及列印機罩3，在閉位置，係於組合載台單元4與頭部單元5的狀態被鎖定。並且，在殼體2之位於上部前側的角部當中，位於左右方向L3之一方側的角部，設置有用以解除載台單元4與頭部單元5的組合，在列印機罩3進行開操作之際所用的操作桿13。 第3圖，係從下方觀察印字單元8的立體圖。如第2圖、第3圖所示，頭部單元5係主要組裝有熱感頭(未圖示)及可動刀刃22的單元，並配置於殼體2內之上部前側。頭部單元5，係固定於從殼體2的上面朝向下方延伸設置的內部板上，並被保持在比記錄紙收容部10更靠前方FW。 頭部單元5，係具備頭部框架23、熱感頭、可動刀刃22、可動刀刃驅動機構(驅動機構)24、解除鎖定操作桿25、回歸機構26、解除鎖定機構27。頭部框架23，係例如為金屬製的框架。熱感頭，係具有沿著左右方向L3以線狀排列的複數個發熱元件。 載台單元4，係於列印機罩3的內面的上部，安裝於與補強構件31在前後方向L1重疊的位置，以能夠伴隨列印機罩3的開閉動作而從頭部單元5分離的方式被組合。具體而言，載台單元4，係具備載台滾輪33、固定刀刃34、載台框架35。載台滾輪33，係將記錄紙P朝向列印機罩3的外部搬運的滾輪。固定刀刃34，係設置於列印機罩3的內部，對於載台滾輪33配置在前方FW。載台框架35，係支承載台滾輪33及固定刀刃34的框架。如此，固定刀刃34係設置於列印機罩3。因此，沒有必要將驅動可動刀刃22的可動刀刃驅動機構24設置在列印機罩3。藉此，能夠使列印機罩3輕量化，並能夠確保開閉列印機罩3之際的良好操作性。 如第1圖、第2圖所示，依據熱列印機1的印字單元8，頭部單元5的熱感頭係形成為沿著左右方向L3(記錄紙P的寬度方向)延伸的板狀。熱感頭，係具有沿著左右方向L3以線狀排列的複數個發熱元件。藉由熱感頭於記錄紙P進行印刷。另外，熱感頭，係在列印機罩3的閉位置，配置為相對向於載台滾輪33，使記錄紙P能夠通過該熱感頭與載台滾輪33之間。 並且，於熱感頭與載台滾輪33之間，中介有將熱感頭朝向下方(載台滾輪33側)推彈的線圈彈簧。藉此，能夠藉由載台滾輪33將熱感頭確實地按壓於被送出的記錄紙P，而能夠藉由印字單元8良好地進行印刷。 第4圖，係表示使可動刀刃22滑移移動，而在固定刀刃34與可動刀刃22之間切斷記錄紙P的狀態的圖。如第3圖、第4圖所示，可動刀刃22係透過可動刀刃驅動機構24設置於殼體2(參照第2圖)。可動刀刃22，係於列印機罩3的閉位置(參照第1圖)，在組合頭部單元5與載台單元4的狀態，以與固定刀刃34在前後方向L1相對向的方式被配置。可動刀刃22，係形成為自根部22a至刀尖22b的長度從兩端朝向中央逐漸變短之V字形的板狀的刀刃。另外，可動刀刃22，係透過可動刀刃夾具29安裝於可動刀刃驅動機構24的驅動齒條46。可動刀刃22，係構成為能夠藉由可動刀刃驅動機構24的運作而對於頭部框架23在上下方向L2滑移移動。亦即，可動刀刃22，係以能夠對於固定刀刃34滑移移動的方式被支承。 第5圖，係第3圖的箭視圖。如第3圖、第5圖所示，可動刀刃驅動機構24，係使可動刀刃22移動至切斷位置P1及待命位置P2的機構。所謂切斷位置P1，係可動刀刃22乘載於固定刀刃34，而可動刀刃22與固定刀刃34一起將記錄紙P切斷的位置。所謂待命位置P2，係可動刀刃22自固定刀刃34遠離的位置。具體而言，可動刀刃驅動機構24，係具備驅動用馬達M1、第1～第4驅動齒41～44、驅動小齒輪45、驅動齒條46。 驅動用馬達M1，係能夠正逆旋轉的馬達。第1驅動齒41，係連結於驅動用馬達M1的驅動軸。第1驅動齒41，係透過第2～第4驅動齒42～44連結於驅動小齒輪45。驅動小齒輪45，係安裝於小齒輪支承軸(支承軸)48的同軸上。小齒輪支承軸48係與驅動小齒輪45一起一體旋轉。驅動小齒輪45，係在左右方向L3分別設置而成為一對。一對驅動小齒輪45，係嚙合於左右方向L3的驅動齒條46。一對驅動小齒輪45，係藉由小齒輪支承軸48連結。 驅動齒條46，係從待命位置P2側的端部(上端部)46a至切斷位置P1側的端部(下端部)46b形成有複數個驅動齒條齒47。亦即，驅動齒條46，係在驅動齒條46的整個區域形成有驅動齒條齒47。驅動齒條46，係沿著可動刀刃夾具29的左右方向L3安裝於兩端部，並沿著上下方向L2延伸。亦即，可動刀刃22係透過可動刀刃夾具29安裝於驅動齒條46。以下，為容易理解構成，針對驅動用馬達M1側的驅動小齒輪45及驅動齒條46進行詳細說明，並省略驅動用馬達M1的相反側之驅動小齒輪45及驅動齒條46的詳細說明。 驅動用馬達M1進行正轉，藉此驅動用馬達M1的旋轉經由第1～第4驅動齒41～44傳遞至驅動小齒輪45。驅動小齒輪45朝向箭號A方向旋轉，而驅動齒條46與回歸機構26的回歸齒條58(後述)一起朝向箭號B方向移動。驅動齒條46進行移動，藉此可動刀刃22與驅動齒條46一起朝向箭號B方向直線移動。亦即，可動刀刃22移動至切斷位置P1。 驅動用馬達M1進行逆轉，藉此驅動用馬達M1的旋轉經由第1～第4驅動齒41～44傳遞至驅動小齒輪45。驅動小齒輪45朝向箭號C方向旋轉，而驅動齒條46朝向箭號D方向移動。驅動齒條46進行移動，藉此可動刀刃22與驅動齒條46一起朝向箭號D方向直線移動。亦即，可動刀刃22移動至待命位置P2。 解除鎖定操作桿25，係透過操作桿支承軸51以能夠轉動的方式被支承於頭部框架23的側壁部23a，具體而言，解除鎖定操作桿25，能夠朝向後方按壓操作。解除鎖定操作桿25的前端部25a，係嵌合於操作桿13的連結體16(參照第2圖)的內側。連動於操作桿13(參照第2圖)的轉動動作，操作解除鎖定操作桿25。 亦即，藉由將操作桿13從鎖定位置轉動操作至釋放位置，解除鎖定操作桿25被朝向箭號E方向轉動操作。於解除鎖定操作桿25的基端部25b，形成有第1齒輪54及第2齒輪55。第1齒輪54，係構成回歸機構26的一部分的構件。第2齒輪55，係構成解除鎖定機構27的一部分的構件。 第6圖，係沿著第3圖的VI-VI線的剖面圖。如第3圖、第6圖所示，回歸機構26，係使可動刀刃22從切斷位置P1回歸到待命位置P2的機構。具體而言，回歸機構26，係具備第1齒輪54、回歸小齒輪57、回歸齒條58。第1齒輪54，係形成於解除鎖定操作桿25的基端部25b的上端。於第1齒輪54的前上側，配置有回歸小齒輪57。回歸小齒輪57，係以旋轉自如的方式被小齒輪支承軸48支承，並且相鄰於驅動小齒輪45而配置在同軸上。具體而言，回歸小齒輪57，係在左右方向L3之驅動小齒輪45之殼體2(參照第2圖)的中央側，沿著驅動小齒輪45的側面配置。另外，回歸小齒輪57，係形成為能夠嚙合於第1齒輪54。 回歸齒條58，係配置為位於回歸小齒輪57的前方且能夠嚙合於回歸小齒輪57。回歸齒條58，係在左右方向L3之驅動齒條46之殼體2(參照第2圖)的中央側，沿著驅動齒條46的側面一體形成。藉由將回歸齒條58一體形成於驅動齒條46，能夠不增加零件數便具備回歸齒條58。藉此，能夠使印字單元8(亦即，熱列印機1)的構成簡單化，並且能夠節約成本。 回歸齒條58，係與驅動齒條46同樣地形成，且與驅動齒條46在驅動齒條齒47的齒數上不同。亦即，驅動齒條46，係在驅動齒條46的整個區域形成有驅動齒條齒47。另一方面，回歸齒條58，係從可動刀刃22的刀尖22b的相反側的端部(上端部)58a至回歸齒條58的大致中央的部位58b形成有回歸齒條歯(齒條齒)59。亦即，回歸齒條58，僅在可動刀刃22的刀尖22b的相反側形成有回歸齒條齒59。回歸齒條齒59係齒形與驅動齒條46的驅動齒條齒47相同，且形成在與驅動齒條齒47相同的延長線上。 藉由使回歸齒條58的回歸齒條齒59僅形成於可動刀刃22的刀尖22b的相反側，在回歸齒條58被配置於待命位置P2的狀態，回歸小齒輪57對於回歸齒條58的回歸齒條齒59之嚙合會解除(參照第8圖)。另一方面，在回歸齒條58被配置於切斷位置P1的狀態，回歸齒條58的回歸齒條齒59會保持在與回歸小齒輪57嚙合的狀態。 依回歸機構26，藉由將解除鎖定操作桿25朝向箭號E方向轉動操作，第1齒輪54會嚙合於回歸小齒輪57。在該狀態，藉由繼續將解除鎖定操作桿25轉動操作，回歸小齒輪57會朝向箭號F方向旋轉。回歸小齒輪57進行旋轉，藉此回歸齒條58與驅動齒條46一起朝向箭號G方向移動。可動刀刃22與回歸齒條58一起朝向箭號G方向移動。如此，能夠連動於解除鎖定操作桿25朝向箭號E方向的轉動動作，使可動刀刃22朝向箭號G方向(亦即待命位置P2)移動。 在此，回歸小齒輪57，係去除了複數個小齒輪齒57a當中相鄰的小齒輪齒57a之間的1齒(小齒輪齒57a)。如此，藉由去除相鄰的小齒輪齒57a之間的1齒，能夠充分確保相鄰的小齒輪齒57a之間的間隔。因此，在使小齒輪齒57a嚙合於回歸齒條齒59之際，能夠抑制小齒輪齒57a的前端對接於回歸齒條齒59的前端之情事。藉此，能夠使小齒輪齒57a順暢地嚙合於回歸齒條齒59。又，作為其他例，例如亦可為未去除相鄰的小齒輪齒57a之間的1齒的形狀之回歸小齒輪57。 另外，回歸小齒輪57，係以旋轉自如的方式被小齒輪支承軸48支承。因此，在可動刀刃22位於待命位置P2的情形，即便操作解除鎖定操作桿25，解除鎖定操作桿25之操作桿操作所產生的動力亦不會被傳達至可動刀刃驅動機構24及可動刀刃22。藉此，在未發生例如夾紙(亦即卡紙)等錯誤的狀態下操作解除鎖定操作桿25的情形，能夠僅使載台單元4(參照第2圖)解除鎖定。 另外，於解除鎖定操作桿25的基端部25b，形成有解除鎖定機構27的第2齒輪55。解除鎖定機構27，係連動於解除鎖定操作桿25的轉動動作而解除列印機罩3(參照第1圖)的鎖定的機構。換言之，載台單元4對於頭部單元5的鎖定係藉由解除鎖定操作桿25被解除。具體而言，解除鎖定機構27，係具備第2齒輪55、解除板62。在頭部框架23的側壁部23a側，於第2齒輪55的後方，解除板62透過板支承軸66以旋轉自如的方式被支承。解除板62，係具備解除齒輪63、釋放凸輪64。 解除齒輪63，係形成為能夠嚙合於解除鎖定操作桿25的第2齒輪55。釋放凸輪64係與解除齒輪63一體形成，且係使頭部單元5與載台單元4(參照第2圖)的組合解除的凸輪。釋放凸輪64，係從解除板62的旋轉中心(亦即板支承軸66)朝向下方突出。 依解除鎖定機構27，藉由將解除鎖定操作桿25朝向箭號E方向轉動操作，第2齒輪55會嚙合於解除齒輪63。在該狀態，藉由繼續將解除鎖定操作桿25轉動操作，解除齒輪63會朝向箭號H方向旋轉。解除齒輪63進行旋轉，藉此釋放凸輪64會與解除齒輪63一起朝向箭號H方向擺動。釋放凸輪64進行擺動，藉此釋放凸輪64會卡合於載台單元4(參照第2圖)側的凸輪從動部71。釋放凸輪64卡合於凸輪從動部71，藉此將凸輪從動部71朝向使鎖定銷72從凹部73脫離的方向推出。鎖定銷72從凹部73脫離，藉此載台單元4與頭部單元5(參照第2圖)的組合被解除。 在此，於操作解除鎖定操作桿25以解除列印機罩3的鎖定之際，能夠使驅動小齒輪45保持在非旋轉狀態(停止狀態)。藉此，能夠在將可動刀刃22保持在待命位置P2的狀態，解除列印機罩3的鎖定。 接著，根據第7圖、第8圖，說明在熱列印機1的可動刀刃22與固定刀刃34之間發生夾紙81的情形藉由回歸機構26使可動刀刃22回歸至待命位置P2的例子。在此，使回歸機構26作動的解除鎖定操作桿25，係連動於操作桿13(參照第2圖)。然而，在第7圖、第8圖中，為了容易理解回歸機構26的動作，係自解除鎖定操作桿25的操作開始說明回歸機構26的動作。 第7圖，係說明在可動刀刃22與固定刀刃34之間發生夾紙(卡紙)81的動作的說明圖。如第7圖所示，使可動刀刃22滑移移動至切斷位置P1，而在固定刀刃34與可動刀刃22之間切斷記錄紙P。在該狀態，可能會在可動刀刃22與固定刀刃34之間發生夾紙81。因夾紙81的發生，可能導致可動刀刃22停止在乘載於固定刀刃34的位置。 在可動刀刃22停止的情形，係將解除鎖定操作桿25朝向箭號I方向轉動操作。第1齒輪54朝向回歸小齒輪57對於箭號J方向移動，而嚙合於回歸小齒輪57。在該狀態，藉由繼續將解除鎖定操作桿25轉動操作，以第1齒輪54使回歸小齒輪57朝向箭號K方向旋轉。回歸小齒輪57進行旋轉，藉此回歸齒條58會朝向箭號L方向移動。回歸齒條58進行移動，藉此可動刀刃22與回歸齒條58一起朝向箭號L方向移動。 第8圖，係說明使可動刀刃22回到待命位置P2的動作的說明圖。如第8圖所示，藉由回歸小齒輪57的旋轉，使可動刀刃22朝向箭號L方向移動而回歸到待命位置P2。如此，使回歸小齒輪57嚙合於回歸齒條58的回歸齒條齒59。另外，使解除鎖定操作桿25能夠連動於回歸小齒輪57。因此，藉由操作解除鎖定操作桿25，能夠以回歸小齒輪57確實地使回歸齒條58回歸到待命位置P2。在此，回歸齒條58係與驅動齒條46(參照第5圖)一體形成。於驅動齒條46安裝有可動刀刃22。藉此，藉由操作解除鎖定操作桿25，能夠以回歸小齒輪57及回歸齒條58確實地使可動刀刃22回歸到待命位置P2。 又，回歸齒條58，僅在可動刀刃22的刀尖22b的相反側形成有回歸齒條齒59。因此，在使可動刀刃22回歸到待命位置P2的狀態，回歸小齒輪57會從回歸齒條58的回歸齒條齒59卸除。亦即，回歸小齒輪57對於回歸齒條58的回歸齒條齒59的嚙合被解除。因此，在使可動刀刃22回歸到待命位置P2之後，將列印機罩3(參照第1圖)的鎖定解除之際，不需移動回歸齒條58便能夠操作解除鎖定操作桿25。藉此，能夠在將可動刀刃22保持在待命位置P2的狀態，解除列印機罩3的鎖定。 接著，根據第2圖、第9圖，說明以解除鎖定機構27解除熱列印機1的列印機罩3的鎖定的例子。在第9圖中，為了容易理解解除鎖定機構27的動作，係自解除鎖定操作桿25的操作開始說明回歸機構26的動作。第9圖，係說明使載台單元4及頭部單元5的鎖定解除的動作的說明圖。 如第9圖所示，在使可動刀刃22回歸到待命位置P2的狀態，將解除鎖定操作桿25繼續朝向箭號I方向轉動操作。藉由將解除鎖定操作桿25轉動操作，第2齒輪55會朝向箭號M方向移動而嚙合於解除齒輪63。在該狀態，藉由繼續將解除鎖定操作桿25轉動操作，解除齒輪63會朝向箭號N方向旋轉。解除齒輪63進行旋轉，藉此釋放凸輪64會與解除齒輪63一起朝向箭號N方向擺動。 釋放凸輪64進行擺動，藉此釋放凸輪64會卡合於載台單元4(參照第2圖)側的凸輪從動部71。釋放凸輪64卡合於凸輪從動部71，藉此將凸輪從動部71朝向使鎖定銷72從凹部73脫離的方向推出。鎖定銷72從凹部73脫離，藉此載台單元4與頭部單元5(參照第2圖)的組合狀態的鎖定被解除。 如第2圖所示，在組合載台單元4與頭部單元5的鎖定被解除的狀態，將列印機罩3以第1轉動軸11為軸來開啟。藉此，記錄紙收容部10被開放，而能夠去除夾紙81(參照第8圖)。 如第2圖、第7圖～第9圖所說明般，在將列印機罩3(具體而言，載台單元4)的鎖定解除之前，使解除鎖定操作桿25與回歸機構26連動。藉由以解除鎖定操作桿25操作回歸機構26，能夠以回歸機構26確實地使可動刀刃22回歸到待命位置P2。如此，使可動刀刃22確實地回歸到待命位置P2，藉此能夠獲得可輕易解除固定刀刃34與可動刀刃22之間所發生的夾紙81的熱列印機1。另外，使解除列印機罩3的鎖定的解除鎖定操作桿25連動於回歸機構26，藉此能夠將解除列印機罩3的鎖定的解除鎖定操作桿25兼用作為去除夾紙81的操作桿。藉此，能夠使印字單元8(亦即，熱列印機1)的構件數量不致增加，並能夠使構成簡單化。 在此，解除鎖定操作桿25的前端部25a，係嵌合於操作桿13的連結體16的內側。因此，連動於操作桿13的轉動動作，操作解除鎖定操作桿25。藉由將操作桿13從鎖定位置轉動操作至釋放位置，連動於操作桿13，解除鎖定操作桿25朝向後方轉動。因此，能夠使回歸機構26或解除鎖定機構27如第7圖～第9圖所說明般作動。藉此，藉由將操作桿13從鎖定位置轉動操作至釋放位置，能夠使回歸機構26或解除鎖定機構27作動而去除夾紙81。 接著，根據第10圖、第11圖說明第2實施形態之印字單元100。又，於第2實施形態之印字單元100中，對於與第1實施形態之印字單元8相同、類似的構件係附加相同的符號而省略詳細說明。 第10圖，係從下方觀察第2實施形態之印字單元100的立體圖。第11圖，係沿著第10圖的XI-XI線的剖面圖。如第10圖、第11圖所示，印字單元100，係以解除鎖定操作桿102取代第1實施形態的解除鎖定操作桿25，並以回歸機構103取代第1實施形態的回歸機構26。印字單元100的其他的構成，係與第1實施形態的印字單元8相同。 解除鎖定操作桿102，係在解除鎖定操作桿102的旋轉中心於同軸上支承有操作桿支承軸104。透過該操作桿支承軸104，第1齒輪105及太陽齒輪107在同軸上以旋轉自如的方式被支承。第1齒輪105及太陽齒輪107係一體形成。第1齒輪105及太陽齒輪107，係構成回歸機構103的一部分的構件。 回歸機構103，與第1實施形態的回歸機構26相同，係使可動刀刃22從切斷位置P1回歸到待命位置P2的機構。具體而言，回歸機構103，係具備第1齒輪105、回歸小齒輪57、回歸齒條58、加速機構106。 第1齒輪105，係透過解除鎖定操作桿102的操作桿支承軸104以旋轉自如的方式被支承。操作桿支承軸104，係在解除鎖定操作桿102的旋轉中心被支承於同軸上。第1齒輪105，係具備第1齒部112。第1齒部112，係於順時針方向的端部105a側，配置在第1齒輪105的圓弧上。換言之，第1齒部112，係於順時針方向形成第1齒輪105的最前端的齒部。亦即，第1齒輪105朝向逆時針方向(箭號O)旋轉，藉此第1齒輪105當中的第1齒部112會最先嚙合於回歸小齒輪57。在第1齒部112嚙合於回歸小齒輪57之後，第1齒輪105繼續朝向逆時針方向(箭號O)旋轉，藉此第1齒部112的後方的第1齒輪105會連續地嚙合於回歸小齒輪57。 在此，第1齒輪105的第1齒部112，係形成於臂部113的前端部113a。臂部113的基端部113b，係連結於第1齒輪105的基部105b。基部105b，係對於操作桿支承軸104形成為同軸上的圓弧狀。臂部113，係對於基部105b在徑方向外側隔著預定間隔形成為彎曲狀。臂部113，係形成為能夠以基端部113b作為支點朝向第1齒輪105的徑方向彈性變形。因此，藉由使臂部113朝向基部105b彈性變形，能夠使第1齒部112退避至第1齒輪105的徑方向內側。將第1齒部112形成為能夠退避至第1齒輪105的徑方向內側的理由係之後詳細說明。 第1齒輪105，係與加速機構106的太陽齒輪107一體形成。加速機構106，係具備太陽齒輪107、行星齒輪108、內齒輪(內齒齒輪)109。太陽齒輪107，係對於第1齒輪105設置在同軸上。太陽齒輪107，係一體形成於第1齒輪105的內面。以嚙合於太陽齒輪107的方式，配置行星齒輪108。行星齒輪108，係透過行星軸115以旋轉自如的方式被支承於解除鎖定操作桿102。行星軸115，係設置在偏離操作桿支承軸104的位置。因此，藉由使解除鎖定操作桿102以操作桿支承軸104作為軸進行旋轉，追隨於解除鎖定操作桿102的移動，行星軸115(亦即行星齒輪108)會以操作桿支承軸104作為中心進行公轉。 行星齒輪108係嚙合於內齒輪109。內齒輪109，係於罩彎曲部117的內周形成為圓弧狀。罩彎曲部117，係一體形成於覆蓋印字單元100的側部的側罩118。 依回歸機構103，藉由使解除鎖定操作桿102以操作桿支承軸104作為軸朝向操作方向進行旋轉，追隨於解除鎖定操作桿102的移動，行星軸115(亦即行星齒輪108)會以操作桿支承軸104作為中心進行公轉。行星齒輪108進行公轉，藉此行星齒輪108會一邊嚙合於內齒輪109一邊朝向順時針方向旋轉(自轉)。因此，太陽齒輪107會朝向逆時針方向旋轉。與太陽齒輪107一起，第1齒輪105會朝向逆時針方向旋轉。 以行星齒輪108使太陽齒輪107朝向逆時針方向旋轉，藉此第1齒輪105會與太陽齒輪107一體地朝向逆時針方向(箭號O)旋轉。因此，相對於解除鎖定操作桿102的行程量，能夠大幅確保第1齒輪105的旋轉量。如此，第1齒輪105，係對於解除鎖定操作桿102以能夠個別旋轉的方式被支承。並且，加速機構106的太陽齒輪107係一體形成於第1齒輪105，藉此能夠在將解除鎖定操作桿102的行程量抑制得較小的狀態大幅確保第1齒輪105的旋轉量。藉此，在使可動刀刃22回歸至待命位置P2之際，能夠確保解除鎖定操作桿102之良好的操作性。 接著，根據第12圖～第16圖，說明在印字單元100的可動刀刃22與固定刀刃34之間發生夾紙81的情形藉由回歸機構103使可動刀刃22回歸至待命位置P2的例子。在此，使回歸機構103作動的解除鎖定操作桿102，係連動於操作桿13(參照第2圖)。然而，在第12圖～第16圖中，為了容易理解回歸機構103的動作，係自解除鎖定操作桿102的操作開始說明回歸機構103的動作。 第12圖，係說明在可動刀刃22與固定刀刃34之間發生夾紙(卡紙)81的動作的說明圖。如第12圖所示，使可動刀刃22滑移移動至切斷位置P1，而在固定刀刃34與可動刀刃22之間切斷記錄紙P。在該狀態，可能會在可動刀刃22與固定刀刃34之間發生夾紙81。因夾紙81的發生，可能導致可動刀刃22停止在乘載於固定刀刃34的位置。 在可動刀刃22停止的情形，係將解除鎖定操作桿102朝向箭號P方向轉動操作。行星齒輪108以操作桿支承軸104作為中心朝向箭號Q方向公轉，並且以行星軸115作為中心朝向箭號R方向自轉。因此，太陽齒輪107會朝向箭號S方向旋轉。太陽齒輪107進行旋轉，藉此第1齒輪105會與太陽齒輪107一起朝向箭號S方向旋轉。 第13圖，係說明使第1齒輪105的第1齒部112嚙合於回歸小齒輪57的動作的說明圖。如第13圖所示，第1齒輪105朝向回歸小齒輪57對於箭號S方向移動，而嚙合於回歸小齒輪57。在第1齒輪105嚙合於回歸小齒輪57之際，第1齒輪105的第1齒部112首先嚙合於回歸小齒輪57。在此，回歸小齒輪57，係以旋轉自如的方式被小齒輪支承軸48支承。因此，在第1齒輪105的第1齒部112嚙合於回歸小齒輪57之際，回歸小齒輪57的小齒輪齒57a的刀尖57b，係配置在抵接於第1齒部112的刀尖112a的位置。 第14圖，係說明使第1齒輪105的第1齒部112越過回歸小齒輪57的刀尖57b的動作的說明圖。如第14圖所示，在回歸小齒輪57的刀尖57b抵接於第1齒部112的刀尖112a的情形，有第1齒輪105的旋轉被回歸小齒輪57阻止之虞。在此，係將第1齒輪105的第1齒部112形成於臂部113的前端部113a。因此，藉由使臂部113彈性變形，能夠使第1齒部112朝向第1齒輪105的徑方向內側退避至箭號T方向。在該狀態，第1齒輪105會朝向逆時針方向如箭號S般旋轉，而第1齒部112越過回歸小齒輪57的小齒輪齒57a的刀尖57b。 第15圖，越過回歸小齒輪57的小齒輪齒57a的刀尖57b之第1齒部112抵接於下個小齒輪齒57a的側面57c的動作的說明圖。如第15圖所示，在第1齒部112越過回歸小齒輪57的小齒輪齒57a的刀尖57b之後，第1齒部112藉由臂部113的回復力從退避位置回歸至原本的位置。回歸了的第1齒部112，係抵接於下個小齒輪齒57a的側面(齒面)57c。 所謂「下個小齒輪齒57a」，係指對於第1齒部112所越過的小齒輪齒57a，於第1齒部112的旋轉方向(亦即箭號S方向)相鄰的小齒輪齒57a。換言之，係在第1齒部112越過小齒輪齒57a之後，朝向箭號S方向旋轉的第1齒部112最先抵接的小齒輪齒57a。回歸了的第1齒部112，藉由抵接於下個小齒輪齒57a的側面57c，能夠以第1齒部112(亦即第1齒輪105)使回歸小齒輪57朝向箭號U方向旋轉。 第16圖，係說明使可動刀刃22回到待命位置P2的動作的說明圖。如第16圖所示，藉由繼續將解除鎖定操作桿102朝向箭號P方向轉動操作，以第1齒輪105使回歸小齒輪57繼續朝向箭號U方向旋轉。回歸小齒輪57進行旋轉，藉此與第1實施形態相同，回歸齒條58會朝向箭號Y方向移動。回歸齒條58進行移動，藉此可動刀刃22與回歸齒條58一起朝向箭號Y方向移動而回歸至待命位置P2。 在此，加速機構106的太陽齒輪107係一體形成於第1齒輪105。因此，能夠在將解除鎖定操作桿102的行程量抑制為較小的狀態，確保用以使可動刀刃22回歸至待命位置P2所必要的第1齒輪105的旋轉量。藉此，能夠確保解除鎖定操作桿102之良好的操作性。 又，回歸齒條58，僅在可動刀刃22的刀尖22b的相反側形成有回歸齒條齒59。藉此，在使可動刀刃22回歸到待命位置P2的狀態，回歸小齒輪57會從回歸齒條58的回歸齒條齒59卸除。亦即，與第1實施形態相同，回歸小齒輪57對於回歸齒條58的回歸齒條齒59的嚙合被解除。因此，在使可動刀刃22回歸到待命位置P2之後，將列印機罩3(參照第1圖)的鎖定解除之際，不需移動回歸齒條58便能夠操作解除鎖定操作桿102。藉此，能夠在將可動刀刃22保持在待命位置P2的狀態，解除列印機罩3的鎖定。 接著，根據第2圖、第17圖，說明以解除鎖定機構27解除熱列印機1的列印機罩3的鎖定的例子。在第17圖中，為了容易理解解除鎖定機構27的動作，係自解除鎖定操作桿102的操作開始說明回歸機構103的動作。第17圖，係說明使載台單元及頭部單元的鎖定解除的動作的說明圖。 如第17圖所示，在使可動刀刃22回歸到待命位置P2的狀態，將解除鎖定操作桿102繼續朝向箭號P方向轉動操作。藉由將解除鎖定操作桿102轉動操作，第2齒輪55會朝向箭號S方向移動而嚙合於解除齒輪63。在該狀態，藉由繼續將解除鎖定操作桿102朝向箭號P方向轉動操作，解除齒輪63會朝向箭號W方向旋轉。解除齒輪63進行旋轉，藉此釋放凸輪64會與解除齒輪63一起朝向箭號W方向擺動。 釋放凸輪64進行擺動，藉此釋放凸輪64會卡合於載台單元4(參照第2圖)側的凸輪從動部71。釋放凸輪64卡合於凸輪從動部71，藉此將凸輪從動部71朝向使鎖定銷72從凹部73脫離的方向推出。鎖定銷72從凹部73脫離，藉此載台單元4與頭部單元5(參照第2圖)的組合狀態的鎖定被解除。 如第2圖所示，在組合載台單元4與頭部單元5的鎖定被解除的狀態，將列印機罩3以第1轉動軸11為軸來開啟。藉此，記錄紙收容部10被開放，而能夠去除夾紙81(參照第16圖)。 如第2圖、第12圖～第17圖所說明般，在將列印機罩3(具體而言，載台單元4)的鎖定解除之前，使解除鎖定操作桿102與回歸機構103連動。藉由以解除鎖定操作桿102操作回歸機構103，能夠以回歸機構103確實地使可動刀刃22回歸到待命位置P2。如此，使可動刀刃22確實地回歸到待命位置P2，藉此能夠獲得可輕易解除固定刀刃34與可動刀刃22之間所發生的夾紙81的熱列印機1。另外，使解除列印機罩3的鎖定的解除鎖定操作桿102連動於回歸機構103，藉此能夠將解除列印機罩3的鎖定的解除鎖定操作桿102兼用作為去除夾紙81的操作桿。藉此，能夠使印字單元8(亦即，熱列印機1)的構件數量不致增加，並能夠使構成簡單化。 在此，解除鎖定操作桿102的前端部102a，係嵌合於操作桿13的連結體16的內側。因此，連動於操作桿13的轉動動作，操作解除鎖定操作桿102。藉由將操作桿13從鎖定位置轉動操作至釋放位置，連動於操作桿13，解除鎖定操作桿102朝向後方轉動。因此，能夠使回歸機構103或解除鎖定機構27如第12圖～第17圖所說明般作動。藉此，藉由將操作桿13從鎖定位置轉動操作至釋放位置，能夠使回歸機構103或解除鎖定機構27作動而去除夾紙81。 又，本發明的技術範圍係不限於前述實施形態，可在不脫離本發明的主旨的範圍內施加各種變更。例如，於前述實施形態中，係針對將固定刀刃34設置於列印機罩3(具體而言，載台單元4)，將可動刀刃22設置於殼體2(具體而言，頭部單元5)的例子進行說明，然而不限於此。作為其他例子，例如亦可將固定刀刃34設置於殼體2，將可動刀刃22設置於列印機罩3。 另外，於前述第1實施形態及第2實施形態中，係針對將固定刀刃34保持在固定狀態，以解除鎖定操作桿25使可動刀刃22回歸至待命位置P2，藉此去除夾紙81的例子進行說明，然而不限於此。作為其他例子，例如亦可在以解除鎖定操作桿25使可動刀刃22回歸至待命位置P2之際，使固定刀刃34朝向遠離可動刀刃22的方向下降。此時，係構成為使固定刀刃34遠離可動刀刃22的動作亦能夠藉由解除鎖定操作桿25進行操作。 另外，於前述第1實施形態及第2實施形態中，係針對使解除鎖定操作桿25連動於操作桿13的轉動動作的例子進行說明，然而不限於此。作為其他例子，例如亦可構成為使解除鎖定操作桿25的前端部25a露出於殼體2的外側，而使用者從殼體2的外側直接操作解除鎖定操作桿25。 另外，於前述第1實施形態及第2實施形態中，係針對將回歸齒條58一體形成於驅動齒條46的例子進行說明，然而不限於此。作為其他例子，例如能夠個別具備與驅動齒條46為不同個體的回歸齒條58。此時，有必要將回歸齒條58安裝於可動刀刃22。 並且，於前述第1實施形態及第2實施形態中，係針對將回歸齒條58配置於驅動齒條46的內側的例子進行說明，然而不限於此。作為其他例子，例如能夠將回歸齒條58配置於驅動齒條46的外側。 另外，於前述第2實施形態中，係針對以太陽齒輪107、行星齒輪108及內齒輪109構成加速機構106的例子進行說明，然而不限於此。加速機構106亦可為其他構成。the following, The first embodiment of the present invention will be described with reference to the drawings. Figure 1, A perspective view of the thermal printer 1 showing the closed position of the print hood 3. Figure 2, A perspective view of the thermal printer 1 showing the open position of the hood 3 is printed. As shown in Figure 1, As shown in Figure 2, Hot printer 1, For the recording paper P pulled from the roll paper R (heat sensitive paper, Paper) for printing, The recording paper P is used as a printer for tickets or receipts. Hot printer 1, The system has: Housing (printer body) 2 Print the hood 3, a stage unit 4 disposed on the side of the printing machine cover 3, The head unit 5 is provided on the side of the casing 2. The printing unit 8 is constituted by the stage unit 4 and the head unit 5. Again, In an embodiment, In the closed position of the printing machine cover 3 shown in Fig. 1, The front left side (printing hood 3 side) with respect to the paper surface is referred to as the front (arrow FW direction), The upper right side (the side of the casing 2) is the rear (arrow direction BA), The upper side is above, The lower side acts as the bottom. In addition, The recording paper P is discharged toward the front FW. and, A direction orthogonal to the front-rear direction L1 and the vertical direction L2 is defined as the left-right direction L3. therefore, There are also opposite directions in each figure. Housing 2, By resin material or metal material, Or properly combine these, The square is formed in the front FW opening. Housing 2, By using a frame body as a basic skeleton, And an exterior cover covering the frame body. Inside the housing 2, A recording paper accommodating portion 10 in which the roll paper R is accommodated is formed, The recording paper accommodating portion 10 is opened by opening the printer cover 3. Recording paper accommodating portion 10, a box formed by a part of the aforementioned frame body and opening toward the front FW, On the inner side, the roll paper R is accommodated in a state in which the width direction coincides with the left-right direction L3. In addition, At the lower portion of the open edge of the housing 2, The first rotating shaft 11 extending in the left-right direction L3 is disposed. On the first rotating shaft 11, The print hood 3 is rotatably coupled to the casing 2. Print the hood 3, It is possible to rotate at an angle of about 90 degrees between a closed position (a position in the first drawing) that closes the opening of the casing 2 and an open position (a position in the second figure) of the opening of the open casing 2 . With this, The opening of the casing 2 (that is, the recording paper accommodating portion 10) is opened and closed by the printing machine cover 3. The recording paper accommodating portion 10 is opened when the printing hood 3 is in the open position, For example, the roll paper R can be put into the recording paper storage unit 10 (that is, a so-called drop-in type). In addition, Hot printer 1, The system is composed of: In the closed position of the print hood 3, Between the front end portion of the printing hood 3 and the casing 2, There are some slight intervals. Recording paper P, This gap is pulled out from the inside of the casing 2 toward the front FW. therefore, These slight gaps function as the discharge port 12 of the recording paper P. also, Housing 2 and printing machine cover 3, In the closed position, The state in which the stage unit 4 and the head unit 5 are combined is locked. and, In the corner of the front side of the housing 2, a corner located on one side of the left and right direction L3, The setting is useful to release the combination of the stage unit 4 and the head unit 5, The operating lever 13 used when the printing hood 3 is opened. Figure 3, A perspective view of the printing unit 8 is viewed from below. As shown in Figure 2, As shown in Figure 3, The head unit 5 is a unit in which a thermal head (not shown) and a movable blade 22 are mainly assembled. And disposed on the front side of the upper portion of the casing 2. Head unit 5, It is fixed to an inner panel extending downward from the upper surface of the casing 2, It is held in front of the recording paper storage unit 10 FW. Head unit 5, It has a head frame 23, Hot head, Movable blade 22, Movable blade drive mechanism (drive mechanism) 24, Unlocking the operating lever 25, Return to the institution 26, The locking mechanism 27 is released. Head frame 23, It is, for example, a metal frame. Hot head, There are a plurality of heat generating elements arranged in a line in the left-right direction L3. Stage unit 4, Attached to the upper part of the inner surface of the print hood 3, Mounted at a position overlapping the reinforcing member 31 in the front-rear direction L1, They are combined so as to be separated from the head unit 5 in accordance with the opening and closing operation of the printing hood 3 . in particular, Stage unit 4, It has a stage roller 33, Fixed blade 34, Stage frame 35. Stage roller 33, A roller that conveys the recording paper P toward the outside of the printing hood 3 is used. Fixed blade 34, The system is disposed inside the printing machine cover 3, The stage roller 33 is disposed on the front FW. Stage frame 35, The frame that supports the stage roller 33 and the fixed blade 34 is supported. in this way, The fixed blade 34 is disposed on the printing machine cover 3. therefore, It is not necessary to provide the movable blade drive mechanism 24 that drives the movable blade 22 to the printer cover 3. With this, The printing hood 3 can be made lighter, It is also possible to ensure good operability at the time of opening and closing the print hood 3. As shown in Figure 1, As shown in Figure 2, According to the printing unit 8 of the hot printer 1, The thermal head of the head unit 5 is formed in a plate shape extending in the left-right direction L3 (the width direction of the recording paper P). Hot head, There are a plurality of heat generating elements arranged in a line in the left-right direction L3. Printing is performed on the recording paper P by a thermal head. In addition, Hot head, Is in the closed position of the print hood 3, Configured to be relatively opposite to the stage roller 33, The recording paper P can be passed between the thermal head and the stage roller 33. And, Between the thermal head and the stage roller 33, The intermediate coil has a coil spring that pushes the thermal head downward (on the stage roller 33 side). With this, The thermal head can be reliably pressed against the fed recording paper P by the stage roller 33, On the other hand, printing can be performed favorably by the printing unit 8. Figure 4, Indicates that the movable blade 22 is moved and moved. The state in which the recording paper P is cut between the fixed blade 34 and the movable blade 22 is shown. As shown in Figure 3, As shown in Figure 4, The movable blade 22 is provided in the casing 2 via the movable blade drive mechanism 24 (see Fig. 2). Movable blade 22, Attached to the closed position of the print hood 3 (refer to Figure 1), In the state of combining the head unit 5 and the stage unit 4, It is disposed so as to face the fixed blade 34 in the front-rear direction L1. Movable blade 22, It is formed in a V-shaped plate-shaped blade whose length from the root portion 22a to the blade edge 22b is gradually shortened from both ends toward the center. In addition, Movable blade 22, The drive rack 46 is attached to the drive rack 46 of the movable blade drive mechanism 24 via the movable blade holder 29. Movable blade 22, The configuration is such that the head frame 23 can be slidably moved in the vertical direction L2 by the operation of the movable blade drive mechanism 24. that is, Movable blade 22, It is supported in such a manner as to be capable of sliding movement of the fixed blade 34. Figure 5, Figure 3 is an arrow view. As shown in Figure 3, Figure 5, Movable blade drive mechanism 24, A mechanism for moving the movable blade 22 to the cutting position P1 and the standby position P2. The cutting position P1, The movable blade 22 is carried on the fixed blade 34, The movable blade 22 together with the fixed blade 34 positions the recording paper P to be cut. The so-called standby position P2, The movable blade 22 is away from the fixed blade 34. in particular, Movable blade drive mechanism 24, It is equipped with a drive motor M1. First to fourth driving teeth 41 to 44, Driving pinion 45, The rack 46 is driven. Drive motor M1, A motor that can rotate in the opposite direction. The first driving tooth 41, It is connected to the drive shaft of the drive motor M1. The first driving tooth 41, The drive pinion 45 is coupled to the second to fourth drive teeth 42 to 44. Drive pinion 45, It is mounted on the coaxial side of the pinion support shaft (support shaft) 48. The pinion support shaft 48 is integrally rotated with the drive pinion 45. Drive pinion 45, They are respectively set in the left-right direction L3 and become a pair. a pair of drive pinions 45, The drive rack 46 is engaged in the left-right direction L3. a pair of drive pinions 45, It is coupled by a pinion support shaft 48. Driving the rack 46, A plurality of driving rack teeth 47 are formed from an end portion (upper end portion) 46a on the standby position P2 side to an end portion (lower end portion) 46b on the cutting position P1 side. that is, Driving the rack 46, Drive rack teeth 47 are formed over the entire area of the drive rack 46. Driving the rack 46, It is attached to both ends along the left-right direction L3 of the movable blade holder 29. And extending along the up and down direction L2. that is, The movable blade 22 is attached to the drive rack 46 via the movable blade holder 29. the following, For easy understanding of the composition, The drive pinion 45 and the drive rack 46 on the drive motor M1 side will be described in detail. The detailed description of the drive pinion 45 and the drive rack 46 on the opposite side of the drive motor M1 will be omitted. The drive motor M1 performs forward rotation, The rotation of the drive motor M1 is transmitted to the drive pinion 45 via the first to fourth drive teeth 41 to 44. The drive pinion 45 rotates in the direction of the arrow A. The drive rack 46 moves in the direction of the arrow B together with the return rack 58 (described later) of the return mechanism 26. Driving the rack 46 to move, Thereby, the movable blade 22 moves linearly with the drive rack 46 in the direction of the arrow B. that is, The movable blade 22 is moved to the cutting position P1. The drive motor M1 is reversed, The rotation of the drive motor M1 is transmitted to the drive pinion 45 via the first to fourth drive teeth 41 to 44. The drive pinion 45 rotates in the direction of the arrow C. The drive rack 46 is moved in the direction of the arrow D. Driving the rack 46 to move, Thereby, the movable blade 22 moves linearly in the direction of the arrow D together with the drive rack 46. that is, The movable blade 22 is moved to the standby position P2. Unlocking the operating lever 25, The support rod support shaft 51 is rotatably supported by the side wall portion 23a of the head frame 23, in particular, Unlocking the operating lever 25, It is possible to press the operation toward the rear. The front end portion 25a of the operating lever 25 is unlocked, It is fitted to the inner side of the connecting body 16 (refer to FIG. 2) of the operation lever 13. Rotating the operation of the operating lever 13 (see Fig. 2), The operation unlocks the operating lever 25. That is, By rotating the operating lever 13 from the locked position to the release position, The unlocking operation lever 25 is rotated in the direction of the arrow E. To unlock the base end portion 25b of the operating lever 25, The first gear 54 and the second gear 55 are formed. The first gear 54, A member that forms part of the return mechanism 26. The second gear 55, A member that constitutes a part of the unlocking mechanism 27 is formed. Figure 6, A cross-sectional view taken along line VI-VI of Fig. 3. As shown in Figure 3, As shown in Figure 6, Return to institution 26, A mechanism for returning the movable blade 22 from the cutting position P1 to the standby position P2. in particular, Return to institution 26, The first gear 54 is provided, Return to pinion 57, Return to the rack 58. The first gear 54, It is formed at the upper end of the proximal end portion 25b of the unlocking operation lever 25. On the front upper side of the first gear 54, A return pinion 57 is provided. Return to pinion 57, Supported by the pinion support shaft 48 in a rotatable manner, And disposed adjacent to the drive pinion 45 and coaxial. in particular, Return to pinion 57, The center side of the casing 2 (see FIG. 2) of the drive pinion 45 in the left-right direction L3 is It is disposed along the side of the drive pinion 45. In addition, Return to pinion 57, It is formed so as to be engageable with the first gear 54. Return to the rack 58, It is configured to be located in front of the return pinion 57 and is engageable with the return pinion 57. Return to the rack 58, The center side of the casing 2 (see FIG. 2) of the drive rack 46 in the left-right direction L3 is It is integrally formed along the side surface of the drive rack 46. By integrally forming the return rack 58 on the drive rack 46, The return rack 58 can be provided without increasing the number of parts. With this, Able to enable the printing unit 8 (ie, The composition of the thermal printer 1) is simplified, And can save costs. Return to the rack 58, It is formed in the same manner as the driving rack 46. And the driving rack 46 is different in the number of teeth of the driving rack teeth 47. that is, Driving the rack 46, Drive rack teeth 47 are formed over the entire area of the drive rack 46. on the other hand, Return to the rack 58, A return rack 歯 (rack tooth) 59 is formed from an end portion (upper end portion) 58a on the opposite side of the blade edge 22b of the movable blade 22 to a substantially central portion 58b of the return rack 58. that is, Return to the rack 58, The return rack teeth 59 are formed only on the opposite side of the blade edge 22b of the movable blade 22. The return rack tooth 59 has the same tooth profile as the drive rack tooth 47 of the drive rack 46, And formed on the same extension line as the driving rack teeth 47. By causing the return rack teeth 59 of the return rack 58 to be formed only on the opposite side of the blade edge 22b of the movable blade 22, In a state where the return rack 58 is disposed at the standby position P2, The meshing of the return pinion 57 to the return rack tooth 59 of the return rack 58 is released (refer to Fig. 8). on the other hand, In a state where the return rack 58 is placed at the cutting position P1, The return rack teeth 59 of the return rack 58 are maintained in a state of meshing with the return pinion 57. According to the return agency 26, By rotating the unlocking operation lever 25 in the direction of the arrow E, The first gear 54 meshes with the return pinion 57. In this state, By continuing to rotate the unlocking lever 25, The return pinion 57 will rotate in the direction of the arrow F. The return pinion 57 rotates, Thereby, the return rack 58 moves together with the drive rack 46 in the direction of the arrow G. The movable blade 22 moves together with the return rack 58 in the direction of the arrow G. in this way, The interlocking operation of the unlocking operation lever 25 in the direction of the arrow E can be interlocked, The movable blade 22 is moved in the direction of the arrow G (that is, the standby position P2). here, Return to pinion 57, One tooth (pinion gear 57a) between the adjacent pinion teeth 57a among the plurality of pinion teeth 57a is removed. in this way, By removing 1 tooth between adjacent pinion teeth 57a, The interval between the adjacent pinion teeth 57a can be sufficiently ensured. therefore, When the pinion teeth 57a are engaged with the return rack teeth 59, It is possible to suppress the front end of the pinion tooth 57a from abutting on the front end of the return rack tooth 59. With this, The pinion teeth 57a can be smoothly engaged with the return rack teeth 59. also, As another example, For example, it may be a return pinion 57 that does not remove the shape of one tooth between adjacent pinion teeth 57a. In addition, Return to pinion 57, It is supported by the pinion support shaft 48 in a rotatable manner. therefore, In the case where the movable blade 22 is at the standby position P2, Even if the operation unlocks the operating lever 25, The power generated by the operation of the lever for unlocking the operating lever 25 is also not transmitted to the movable blade drive mechanism 24 and the movable blade 22. With this, The operation of unlocking the operating lever 25 is performed in a state where an error such as a paper jam (ie, a jam) occurs, It is possible to unlock only the stage unit 4 (see FIG. 2). In addition, To unlock the base end portion 25b of the operating lever 25, The second gear 55 of the unlocking mechanism 27 is formed. Unlocking mechanism 27, A mechanism for releasing the locking operation of the printing machine cover 3 (see FIG. 1) by interlocking the rotation operation of the lock operation lever 25. In other words, The locking of the head unit 4 to the head unit 5 is released by the unlocking operation lever 25. in particular, Unlocking mechanism 27, The second gear 55 is provided. The board 62 is released. On the side wall portion 23a side of the head frame 23, Behind the second gear 55, The canceling plate 62 is rotatably supported by the plate support shaft 66. Release the board 62, Is equipped with a release gear 63, The cam 64 is released. Release the gear 63, The second gear 55 that can be engaged with the unlocking operation lever 25 is formed. The release cam 64 is integrally formed with the release gear 63. Further, a cam that releases the combination of the head unit 5 and the stage unit 4 (see FIG. 2) is used. Release the cam 64, It protrudes downward from the center of rotation of the canceling plate 62 (that is, the plate supporting shaft 66). According to the unlocking mechanism 27, By rotating the unlocking operation lever 25 in the direction of the arrow E, The second gear 55 meshes with the cancel gear 63. In this state, By continuing to rotate the unlocking lever 25, The cancel gear 63 rotates in the direction of the arrow H. The gear 63 is released to rotate, Thereby, the release cam 64 swings together with the cancel gear 63 in the direction of the arrow H. Release the cam 64 to swing, Thereby, the release cam 64 is engaged with the cam follower 71 on the stage unit 4 (see FIG. 2) side. The release cam 64 is engaged with the cam follower 71, Thereby, the cam follower 71 is pushed out in a direction in which the lock pin 72 is disengaged from the recess 73. The locking pin 72 is disengaged from the recess 73, Thereby, the combination of the stage unit 4 and the head unit 5 (refer to FIG. 2) is released. here, When the operation of the lock lever 25 is released to release the lock of the printer cover 3, The drive pinion 45 can be maintained in a non-rotating state (stop state). With this, It is possible to maintain the movable blade 22 in the standby position P2, The lock of the printing hood 3 is released. Then, According to Figure 7, Figure 8, An example in which the paper jam 81 occurs between the movable blade 22 of the hot printer 1 and the fixed blade 34 is described by the return mechanism 26 returning the movable blade 22 to the standby position P2. here, The unlocking lever 25 that causes the return mechanism 26 to operate, It is linked to the operating lever 13 (refer to Fig. 2). however, In Figure 7, In Figure 8, In order to easily understand the action of the return mechanism 26, The operation of the return mechanism 26 will be described starting from the operation of the unlocking operation lever 25. Figure 7, An explanatory view of the operation of the paper jam (jam) 81 between the movable blade 22 and the fixed blade 34 will be described. As shown in Figure 7, Moving the movable blade 22 to the cutting position P1, On the other hand, the recording paper P is cut between the fixed blade 34 and the movable blade 22. In this state, A paper jam 81 may occur between the movable blade 22 and the fixed blade 34. Due to the occurrence of the paper jam 81, It may cause the movable blade 22 to stop at the position of the fixed blade 34. In the case where the movable blade 22 is stopped, The unlocking operation lever 25 is rotated in the direction of the arrow I. The first gear 54 moves toward the return pinion 57 in the direction of the arrow J, It is engaged with the return pinion 57. In this state, By continuing to rotate the unlocking lever 25, The return pinion 57 is rotated in the direction of the arrow K by the first gear 54. The return pinion 57 rotates, Thereby, the return rack 58 moves in the direction of the arrow L. Returning to the rack 58 to move, Thereby, the movable blade 22 moves together with the return rack 58 in the direction of the arrow L. Figure 8, An explanatory diagram of an operation of returning the movable blade 22 to the standby position P2 will be described. As shown in Figure 8, By returning the rotation of the pinion 57, The movable blade 22 is moved in the direction of the arrow L to return to the standby position P2. in this way, The return pinion 57 is engaged with the return rack teeth 59 of the return rack 58. In addition, The unlocking operation lever 25 can be interlocked with the return pinion 57. therefore, By operating the unlocking lever 25, The return rack 58 can be reliably returned to the standby position P2 by the return pinion 57. here, The return rack 58 is integrally formed with the drive rack 46 (see Fig. 5). A movable blade 22 is attached to the drive rack 46. With this, By operating the unlocking lever 25, The movable blade 22 can be reliably returned to the standby position P2 by the return pinion 57 and the return rack 58. Again, Return to the rack 58, The return rack teeth 59 are formed only on the opposite side of the blade edge 22b of the movable blade 22. therefore, In a state where the movable blade 22 is returned to the standby position P2, The return pinion 57 is removed from the return rack teeth 59 of the return rack 58. that is, The meshing of the return pinion 57 with respect to the return rack teeth 59 of the return rack 58 is released. therefore, After returning the movable blade 22 to the standby position P2, When the lock of the printing hood 3 (refer to Fig. 1) is released, The unlocking lever 25 can be operated without moving the return rack 58. With this, It is possible to maintain the movable blade 22 in the standby position P2, The lock of the printing hood 3 is released. Then, According to Figure 2, Figure 9, An example in which the unlocking mechanism 27 releases the lock of the printer cover 3 of the thermal printer 1 will be described. In Figure 9, In order to easily understand the action of the unlocking mechanism 27, The operation of the return mechanism 26 will be described starting from the operation of the unlocking operation lever 25. Figure 9, An explanatory view of an operation for releasing the lock of the stage unit 4 and the head unit 5 will be described. As shown in Figure 9, In a state where the movable blade 22 is returned to the standby position P2, The unlocking operation lever 25 is continuously rotated in the direction of the arrow I. By rotating the unlocking lever 25, The second gear 55 moves in the direction of the arrow M and meshes with the cancel gear 63. In this state, By continuing to rotate the unlocking lever 25, The cancel gear 63 rotates in the direction of the arrow N. The gear 63 is released to rotate, Thereby, the release cam 64 swings together with the cancel gear 63 in the direction of the arrow N. Release the cam 64 to swing, Thereby, the release cam 64 is engaged with the cam follower 71 on the stage unit 4 (see FIG. 2) side. The release cam 64 is engaged with the cam follower 71, Thereby, the cam follower 71 is pushed out in a direction in which the lock pin 72 is disengaged from the recess 73. The locking pin 72 is disengaged from the recess 73, Thereby, the lock of the combined state of the stage unit 4 and the head unit 5 (refer to FIG. 2) is released. As shown in Figure 2, In a state where the locking of the combination stage unit 4 and the head unit 5 is released, The printing hood 3 is opened with the first rotating shaft 11 as an axis. With this, The recording paper accommodating portion 10 is opened, The paper jam 81 can be removed (refer to Fig. 8). As shown in Figure 2, As illustrated in Figures 7 to 9, In the printing hood 3 (specifically, Before the locking of the stage unit 4) is released, The unlocking operation lever 25 is interlocked with the return mechanism 26. By operating the return mechanism 26 with the unlocking lever 25, The movable blade 22 can be reliably returned to the standby position P2 by the return mechanism 26. in this way, The movable blade 22 is reliably returned to the standby position P2, Thereby, the hot stamping machine 1 which can easily release the paper jam 81 which occurs between the fixed blade 34 and the movable blade 22 can be obtained. In addition, The unlocking operation lever 25 that releases the lock of the printer cover 3 is linked to the return mechanism 26, Thereby, the unlocking operation lever 25 which releases the lock of the printing machine cover 3 can also be used as an operation lever which removes the paper jam 81. With this, Able to enable the printing unit 8 (ie, The number of components of the hot printer 1) does not increase, And can make the composition simple. here, The front end portion 25a of the operating lever 25 is unlocked, It is fitted to the inner side of the connecting body 16 of the operating lever 13. therefore, Rotating the rotation of the operating lever 13, The operation unlocks the operating lever 25. By rotating the operating lever 13 from the locked position to the release position, Linked to the operating lever 13, The unlocking operation lever 25 is rotated rearward. therefore, The return mechanism 26 or the unlocking mechanism 27 can be actuated as described in Figs. 7 to 9 . With this, By rotating the operating lever 13 from the locked position to the release position, The return mechanism 26 or the unlocking mechanism 27 can be actuated to remove the paper jam 81. Then, According to Figure 10, Fig. 11 is a view showing the printing unit 100 of the second embodiment. also, In the printing unit 100 of the second embodiment, The same as the printing unit 8 of the first embodiment, The same components are denoted by the same reference numerals and the detailed description is omitted. Figure 10, A perspective view of the printing unit 100 of the second embodiment is observed from below. Figure 11, A cross-sectional view taken along line XI-XI of Fig. 10. As shown in Figure 10, As shown in Figure 11, Printing unit 100, The unlocking operation lever 102 is replaced with the unlocking operation lever 102 of the first embodiment. The regression mechanism 33 of the first embodiment is replaced by a regression mechanism 103. Other components of the printing unit 100, It is the same as the printing unit 8 of the first embodiment. Unlocking the operating lever 102, The operation lever support shaft 104 is coaxially supported at the rotation center of the unlocking operation lever 102. Supporting the shaft 104 through the operating lever, The first gear 105 and the sun gear 107 are rotatably supported coaxially. The first gear 105 and the sun gear 107 are integrally formed. The first gear 105 and the sun gear 107, A member constituting a part of the return mechanism 103. Return to institution 103, The same as the regression mechanism 26 of the first embodiment, A mechanism for returning the movable blade 22 from the cutting position P1 to the standby position P2. in particular, Return to institution 103, The first gear 105 is provided, Return to pinion 57, Return to the rack 58, Acceleration mechanism 106. The first gear 105, The lever support shaft 104 of the unlocking operation lever 102 is rotatably supported. The operating lever supports the shaft 104, The rotation center of the unlocking operation lever 102 is supported coaxially. The first gear 105, The first tooth portion 112 is provided. The first tooth portion 112, Attached to the side of the end 105a in the clockwise direction, It is disposed on the arc of the first gear 105. In other words, The first tooth portion 112, The tooth portion at the foremost end of the first gear 105 is formed in the clockwise direction. that is, The first gear 105 rotates counterclockwise (arrow No. O). Thereby, the first tooth portion 112 among the first gears 105 is first meshed with the return pinion 57. After the first tooth portion 112 is engaged with the return pinion 57, The first gear 105 continues to rotate in the counterclockwise direction (arrow No. O). Thereby, the first gear 105 at the rear of the first tooth portion 112 is continuously meshed with the return pinion 57. here, The first tooth portion 112 of the first gear 105, It is formed in the front end part 113a of the arm part 113. The base end portion 113b of the arm portion 113, It is connected to the base portion 105b of the first gear 105. Base 105b, The lever support shaft 104 is formed in an arc shape coaxially. Arm 113, The base portion 105b is formed in a curved shape at a predetermined interval in the radial direction outer side. Arm 113, It is formed so that it can be elastically deformed toward the radial direction of the first gear 105 with the base end portion 113b as a fulcrum. therefore, By elastically deforming the arm portion 113 toward the base portion 105b, The first tooth portion 112 can be retracted to the inner side in the radial direction of the first gear 105. The reason why the first tooth portion 112 can be retracted to the inner side in the radial direction of the first gear 105 will be described in detail later. The first gear 105, It is formed integrally with the sun gear 107 of the acceleration mechanism 106. Acceleration mechanism 106, It has a sun gear 107, Planetary gear 108, Internal gear (internal gear) 109. Sun gear 107, The first gear 105 is disposed coaxially. Sun gear 107, It is integrally formed on the inner surface of the first gear 105. In a manner of meshing with the sun gear 107, The planet gears 108 are configured. Planetary gear 108, The lock lever 102 is rotatably supported by the planetary shaft 115. Planetary shaft 115, It is disposed at a position deviating from the lever support shaft 104. therefore, By rotating the unlocking operation lever 102 with the operation lever support shaft 104 as an axis, Following the movement of the unlocking lever 102, The planetary shaft 115 (i.e., the planetary gear 108) revolves around the lever support shaft 104 as a center. The planet gears 108 are meshed with the internal gear 109. Internal gear 109, The inner circumference of the cover curved portion 117 is formed in an arc shape. Cover bend 117, The side cover 118 is integrally formed on the side covering the printing unit 100. According to the return agency 103, By rotating the unlocking operation lever 102 with the operation lever support shaft 104 as an axis toward the operation direction, Following the movement of the unlocking lever 102, The planetary shaft 115 (i.e., the planetary gear 108) revolves around the lever support shaft 104 as a center. The planetary gear 108 revolves, Thereby, the planetary gear 108 rotates clockwise (rotation) while meshing with the internal gear 109. therefore, The sun gear 107 will rotate in a counterclockwise direction. Together with the sun gear 107, The first gear 105 rotates in the counterclockwise direction. The sun gear 107 is rotated counterclockwise by the planetary gear 108. Thereby, the first gear 105 rotates integrally with the sun gear 107 in the counterclockwise direction (arrow No. O). therefore, Relative to the amount of stroke of the unlocking lever 102, The amount of rotation of the first gear 105 can be largely ensured. in this way, The first gear 105, The unlocking operation lever 102 is supported so as to be rotatable in an individual manner. and, The sun gear 107 of the acceleration mechanism 106 is integrally formed on the first gear 105, Thereby, the amount of rotation of the first gear 105 can be largely ensured in a state where the stroke amount of the unlocking operation lever 102 is suppressed to be small. With this, When the movable blade 22 is returned to the standby position P2, It is possible to ensure good operability of the unlocking operation lever 102. Then, According to Figures 12 to 16, An example in which the paper jam 81 occurs between the movable blade 22 of the printing unit 100 and the fixed blade 34 is described by the return mechanism 103 returning the movable blade 22 to the standby position P2. here, The unlocking operation lever 102 that causes the return mechanism 103 to operate, It is linked to the operating lever 13 (refer to Fig. 2). however, In Figures 12 to 16, In order to easily understand the action of the return mechanism 103, The operation of the return mechanism 103 will be described starting from the operation of the unlocking operation lever 102. Figure 12, An explanatory view of the operation of the paper jam (jam) 81 between the movable blade 22 and the fixed blade 34 will be described. As shown in Figure 12, Moving the movable blade 22 to the cutting position P1, On the other hand, the recording paper P is cut between the fixed blade 34 and the movable blade 22. In this state, A paper jam 81 may occur between the movable blade 22 and the fixed blade 34. Due to the occurrence of the paper jam 81, It may cause the movable blade 22 to stop at the position of the fixed blade 34. In the case where the movable blade 22 is stopped, The unlocking operation lever 102 is rotated in the direction of the arrow P. The planetary gear 108 revolves toward the arrow Q direction with the operating lever support shaft 104 as a center. Further, the planetary shaft 115 is used as a center to rotate in the direction of the arrow R. therefore, The sun gear 107 rotates in the direction of the arrow S. The sun gear 107 rotates, Thereby, the first gear 105 rotates together with the sun gear 107 in the direction of the arrow S. Figure 13, The explanatory view of the operation of engaging the first tooth portion 112 of the first gear 105 with the return pinion 57 will be described. As shown in Figure 13, The first gear 105 moves toward the return pinion 57 in the direction of the arrow S. It is engaged with the return pinion 57. When the first gear 105 meshes with the return pinion 57, The first tooth portion 112 of the first gear 105 first meshes with the return pinion 57. here, Return to pinion 57, It is supported by the pinion support shaft 48 in a rotatable manner. therefore, When the first tooth portion 112 of the first gear 105 meshes with the return pinion 57, Returning to the cutting edge 57b of the pinion gear 57a of the pinion 57, It is disposed at a position that abuts against the blade edge 112a of the first tooth portion 112. Figure 14, An explanatory view of an operation of causing the first tooth portion 112 of the first gear 105 to pass over the blade edge 57b of the return pinion 57 will be described. As shown in Figure 14, When the blade edge 57b of the return pinion 57 abuts against the blade edge 112a of the first tooth portion 112, The rotation of the first gear 105 is blocked by the return pinion 57. here, The first tooth portion 112 of the first gear 105 is formed at the front end portion 113a of the arm portion 113. therefore, By elastically deforming the arm portion 113, The first tooth portion 112 can be retracted toward the inner side in the radial direction of the first gear 105 in the direction of the arrow T. In this state, The first gear 105 rotates counterclockwise like an arrow S. The first tooth portion 112 passes over the blade edge 57b of the pinion gear 57a of the return pinion 57. Figure 15, An operation diagram in which the first tooth portion 112 of the blade edge 57b of the pinion gear 57a of the return pinion 57 abuts against the side surface 57c of the next pinion tooth 57a. As shown in Figure 15, After the first tooth portion 112 passes over the blade edge 57b of the pinion gear 57a of the return pinion 57, The first tooth portion 112 is returned from the retracted position to the original position by the restoring force of the arm portion 113. Returning the first tooth portion 112, It abuts against the side surface (tooth surface) 57c of the next pinion tooth 57a. The so-called "next pinion tooth 57a", Means the pinion tooth 57a that has passed over the first tooth portion 112, The pinion teeth 57a adjacent to each other in the rotation direction of the first tooth portion 112 (that is, the arrow S direction). In other words, After the first tooth portion 112 passes over the pinion teeth 57a, The first tooth portion 112 that rotates in the direction of the arrow S first contacts the pinion tooth 57a. Returning the first tooth portion 112, By abutting against the side 57c of the next pinion tooth 57a, The return pinion 57 can be rotated in the direction of the arrow U by the first tooth portion 112 (that is, the first gear 105). Figure 16, An explanatory diagram of an operation of returning the movable blade 22 to the standby position P2 will be described. As shown in Figure 16, By continuing to rotate the unlocking lever 102 in the direction of the arrow P, The return pinion 57 is continuously rotated in the direction of the arrow U by the first gear 105. The return pinion 57 rotates, This is the same as in the first embodiment. The return rack 58 moves in the direction of the arrow Y. Returning to the rack 58 to move, Thereby, the movable blade 22 moves together with the return rack 58 in the direction of the arrow Y to return to the standby position P2. here, The sun gear 107 of the acceleration mechanism 106 is integrally formed in the first gear 105. therefore, It is possible to suppress the stroke amount of the unlocking operation lever 102 to a small state, The amount of rotation of the first gear 105 necessary to return the movable blade 22 to the standby position P2 is ensured. With this, It is possible to ensure good operability of the unlocking operation lever 102. Again, Return to the rack 58, The return rack teeth 59 are formed only on the opposite side of the blade edge 22b of the movable blade 22. With this, In a state where the movable blade 22 is returned to the standby position P2, The return pinion 57 is removed from the return rack teeth 59 of the return rack 58. that is, Similar to the first embodiment, The meshing of the return pinion 57 with respect to the return rack teeth 59 of the return rack 58 is released. therefore, After returning the movable blade 22 to the standby position P2, When the lock of the printing hood 3 (refer to Fig. 1) is released, The unlocking lever 102 can be operated without moving the return rack 58. With this, It is possible to maintain the movable blade 22 in the standby position P2, The lock of the printing hood 3 is released. Then, According to Figure 2, Figure 17, An example in which the unlocking mechanism 27 releases the lock of the printer cover 3 of the thermal printer 1 will be described. In Figure 17, In order to easily understand the action of the unlocking mechanism 27, The operation of the return mechanism 103 will be described starting from the operation of the unlocking operation lever 102. Figure 17, An explanatory view of an operation for releasing the lock of the stage unit and the head unit will be described. As shown in Figure 17, In a state where the movable blade 22 is returned to the standby position P2, The unlocking operation lever 102 continues to rotate in the direction of the arrow P. By rotating the unlocking lever 102, The second gear 55 moves in the direction of the arrow S and meshes with the cancel gear 63. In this state, By continuing to rotate the unlocking lever 102 in the direction of the arrow P, The cancel gear 63 rotates in the direction of the arrow W. The gear 63 is released to rotate, Thereby, the release cam 64 is swung in the direction of the arrow W together with the release gear 63. Release the cam 64 to swing, Thereby, the release cam 64 is engaged with the cam follower 71 on the stage unit 4 (see FIG. 2) side. The release cam 64 is engaged with the cam follower 71, Thereby, the cam follower 71 is pushed out in a direction in which the lock pin 72 is disengaged from the recess 73. The locking pin 72 is disengaged from the recess 73, Thereby, the lock of the combined state of the stage unit 4 and the head unit 5 (refer to FIG. 2) is released. As shown in Figure 2, In a state where the locking of the combination stage unit 4 and the head unit 5 is released, The printing hood 3 is opened with the first rotating shaft 11 as an axis. With this, The recording paper accommodating portion 10 is opened, The paper jam 81 can be removed (refer to Fig. 16). As shown in Figure 2, As illustrated in Figures 12 to 17, In the printing hood 3 (specifically, Before the locking of the stage unit 4) is released, The unlocking operation lever 102 is interlocked with the return mechanism 103. By operating the return mechanism 103 with the unlocking lever 102, The movable blade 22 can be surely returned to the standby position P2 by the return mechanism 103. in this way, The movable blade 22 is reliably returned to the standby position P2, Thereby, the hot stamping machine 1 which can easily release the paper jam 81 which occurs between the fixed blade 34 and the movable blade 22 can be obtained. In addition, The unlocking operation lever 102 that releases the lock of the printer cover 3 is linked to the return mechanism 103, Thereby, the unlocking operation lever 102 that releases the lock of the printer cover 3 can also be used as the operation lever for removing the paper jam 81. With this, Able to enable the printing unit 8 (ie, The number of components of the hot printer 1) does not increase, And can make the composition simple. here, The front end portion 102a of the operating lever 102 is unlocked, It is fitted to the inner side of the connecting body 16 of the operating lever 13. therefore, Rotating the rotation of the operating lever 13, The operation unlocks the operating lever 102. By rotating the operating lever 13 from the locked position to the release position, Linked to the operating lever 13, The unlocking operation lever 102 is rotated rearward. therefore, The return mechanism 103 or the unlocking mechanism 27 can be operated as described in Figs. 12 to 17 . With this, By rotating the operating lever 13 from the locked position to the release position, The return mechanism 103 or the unlocking mechanism 27 can be actuated to remove the paper jam 81. Again, The technical scope of the present invention is not limited to the foregoing embodiment, Various changes can be made without departing from the spirit and scope of the invention. E.g, In the foregoing embodiment, For setting the fixed blade 34 to the printing machine cover 3 (specifically, Stage unit 4), The movable blade 22 is disposed in the casing 2 (specifically, An example of the head unit 5) will be described. It is not limited to this. As another example, For example, the fixed blade 34 may be disposed in the housing 2, The movable blade 22 is placed on the printing machine cover 3. In addition, In the first embodiment and the second embodiment, For keeping the fixed blade 34 in a fixed state, Releasing the operating lever 25 to return the movable blade 22 to the standby position P2, An example in which the paper 81 is removed is explained. It is not limited to this. As another example, For example, when the movable blade 22 is returned to the standby position P2 by the unlocking operation lever 25, The fixed blade 34 is lowered in a direction away from the movable blade 22. at this time, The movement of the fixed blade 34 away from the movable blade 22 can also be operated by releasing the locking lever 25. In addition, In the first embodiment and the second embodiment, An example of the rotation operation of interlocking the unlocking operation lever 25 with the operation lever 13 will be described. It is not limited to this. As another example, For example, the front end portion 25a of the unlocking operation lever 25 may be exposed to the outside of the casing 2, for example. The user directly operates the unlocking operation lever 25 from the outside of the casing 2. In addition, In the first embodiment and the second embodiment, An example in which the return rack 58 is integrally formed on the driving rack 46 will be described. It is not limited to this. As another example, For example, a return rack 58 that is different from the drive rack 46 can be provided individually. at this time, It is necessary to mount the return rack 58 to the movable blade 22. And, In the first embodiment and the second embodiment, An example in which the return rack 58 is disposed inside the drive rack 46 will be described. It is not limited to this. As another example, For example, the return rack 58 can be disposed outside the drive rack 46. In addition, In the second embodiment described above, For the sun gear 107, An example in which the planetary gear 108 and the internal gear 109 constitute the acceleration mechanism 106 will be described. It is not limited to this. The acceleration mechanism 106 can also have other configurations.
1‧‧‧熱列印機1‧‧‧Hot printing machine
2‧‧‧殼體(列印機本體)2‧‧‧Shell (printer body)
3‧‧‧列印機罩3‧‧‧Printing hood
4‧‧‧載台單元4‧‧‧ stage unit
5‧‧‧頭部單元5‧‧‧ head unit
8‧‧‧印字單元8‧‧‧Printing unit
10‧‧‧記錄紙收容部10‧‧‧record paper storage department
11‧‧‧第1轉動軸11‧‧‧1st axis of rotation
12‧‧‧排出口12‧‧‧Export
13‧‧‧操作桿13‧‧‧Operator
16‧‧‧連結體16‧‧‧Connected body
22‧‧‧可動刀刃22‧‧‧ movable blade
22a‧‧‧根部22a‧‧‧ Root
22b‧‧‧刀尖22b‧‧‧Tool tip
23‧‧‧頭部框架23‧‧‧ head frame
23a‧‧‧側壁部23a‧‧‧ Sidewall
24‧‧‧可動刀刃驅動機構(驅動機構)24‧‧‧ movable blade drive mechanism (drive mechanism)
25‧‧‧解除鎖定操作桿25‧‧‧Unlocking lever
25a‧‧‧前端部25a‧‧‧ front end
25b‧‧‧基端部25b‧‧‧ base end
26‧‧‧回歸機構26‧‧‧Return institutions
27‧‧‧解除鎖定機構27‧‧‧Unlocking mechanism
29‧‧‧刀刃夾具29‧‧‧blade fixture
31‧‧‧補強構件31‧‧‧Reinforcing components
33‧‧‧載台滾輪33‧‧‧Trolley wheel
34‧‧‧固定刀刃34‧‧‧Fixed blade
35‧‧‧載台框架35‧‧‧stage frame
41‧‧‧第1驅動齒41‧‧‧1st drive tooth
42‧‧‧第2驅動齒42‧‧‧2nd drive tooth
43‧‧‧第3驅動齒43‧‧‧3rd drive tooth
44‧‧‧第4驅動齒44‧‧‧4th drive tooth
45‧‧‧驅動小齒輪45‧‧‧ drive pinion
46‧‧‧驅動齒條46‧‧‧ drive rack
46a‧‧‧端部(上端部)46a‧‧‧End (upper end)
46b‧‧‧端部(下端部)46b‧‧‧End (lower end)
47‧‧‧驅動齒條齒47‧‧‧Drive rack teeth
48‧‧‧小齒輪支承軸48‧‧‧Spindle support shaft
51‧‧‧操作桿支承軸51‧‧‧Operation rod support shaft
54‧‧‧第1齒輪54‧‧‧1st gear
55‧‧‧第2齒輪55‧‧‧2nd gear
57‧‧‧回歸小齒輪57‧‧‧Return to pinion
57a‧‧‧小齒輪齒57a‧‧‧Spindle teeth
57b‧‧‧刀尖57b‧‧‧Tool tip
57c‧‧‧側面57c‧‧‧ side
58‧‧‧回歸齒條58‧‧‧Return to rack
58a‧‧‧端部(上端部)58a‧‧‧End (upper end)
58b‧‧‧回歸齒條58的大致中央的部位58b‧‧‧Return to the approximate center of the rack 58
59‧‧‧回歸齒條歯(齒條齒)59‧‧‧Return to rack 歯 (rack teeth)
62‧‧‧解除板62‧‧‧ release board
63‧‧‧解除齒輪63‧‧‧Remove the gear
64‧‧‧釋放凸輪64‧‧‧ release cam
66‧‧‧板支承軸66‧‧‧Board support shaft
71‧‧‧凸輪從動部71‧‧‧Cam follower
72‧‧‧鎖定銷72‧‧‧Lock pin
73‧‧‧凹部73‧‧‧ recess
81‧‧‧夾紙(卡紙)81‧‧‧Clip paper (jam)
100‧‧‧印字單元100‧‧‧Printing unit
102‧‧‧解除鎖定操作桿102‧‧‧Unlocking lever
102‧‧‧前端部102‧‧‧ front end
103‧‧‧回歸機構103‧‧‧Return institutions
104‧‧‧操作桿支承軸104‧‧‧Operation rod support shaft
105‧‧‧第1齒輪105‧‧‧1st gear
105a‧‧‧端部105a‧‧‧End
105b‧‧‧基部105b‧‧‧ base
106‧‧‧加速機構106‧‧‧Accelerating agencies
107‧‧‧太陽齒輪107‧‧‧Sun gear
108‧‧‧行星齒輪108‧‧‧ planetary gear
109‧‧‧內齒輪109‧‧‧Internal gear
112‧‧‧第1齒部112‧‧‧1st tooth
112a‧‧‧刀尖112a‧‧‧Tool tip
113‧‧‧臂部113‧‧‧arms
113a‧‧‧前端部113a‧‧‧ front end
113b‧‧‧基端部113b‧‧‧ base end
115‧‧‧行星軸115‧‧‧ planet shaft
117‧‧‧罩彎曲部117‧‧‧ Cover bend
118‧‧‧側罩118‧‧‧ side cover
L1‧‧‧前後方向L1‧‧‧ direction
L2‧‧‧上下方向L2‧‧‧Up and down direction
L3‧‧‧左右方向L3‧‧‧ direction
M1‧‧‧驅動用馬達M1‧‧‧Drive motor
P‧‧‧記錄紙P‧‧‧record paper
P1‧‧‧切斷位置P1‧‧‧ cut position
P2‧‧‧待命位置P2‧‧‧ Standby position
R‧‧‧捲筒紙R‧‧‧ Web
第1圖，係表示將本發明的第1實施形態之熱列印機的列印機罩關閉至閉位置的狀態的立體圖。 第2圖，係表示將本發明的第1實施形態之熱列印機的列印機罩開啟至開位置的狀態的立體圖。 第3圖，係表示從下方觀察本發明的第1實施形態之熱列印機的印字單元的立體圖。 第4圖，係表示在本發明的第1實施形態之印字單元的可動刀刃與固定刀刃之間切斷記錄紙的狀態的立體圖。 第5圖，係從表示本發明的第1實施形態之印字單元的第3圖的V箭視方向觀察的側視圖。 第6圖，係沿著表示本發明的第1實施形態之印字單元的第3圖的VI-VI線的剖面圖。 第7圖，係說明在本發明的第1實施形態之印字單元的可動刀刃與固定刀刃之間發生夾紙的動作的說明圖。 第8圖，係說明使本發明的第1實施形態之印字單元的可動刀刃回到待命位置的動作的說明圖。 第9圖，係說明使本發明的第1實施形態之熱列印機的載台單元及頭部單元的鎖定解除的動作的說明圖。 第10圖，係表示從下方觀察本發明的第2實施形態之熱列印機的印字單元的立體圖。 第11圖，係沿著表示本發明的第2實施形態之印字單元的第10圖的XI-XI線的剖面圖。 第12圖，係說明在本發明的第2實施形態之印字單元的可動刀刃與固定刀刃之間發生夾紙的動作的說明圖。 第13圖，係說明使本發明的第2實施形態之第1齒輪的第1齒部嚙合於回歸小齒輪的動作的說明圖。 第14圖，係說明使本發明的第2實施形態之第1齒輪的第1齒部越過回歸小齒輪的刀尖的動作的說明圖。 第15圖，係說明使本發明的第2實施形態之越過回歸小齒輪的小齒輪齒的刀尖之第1齒部抵接於下個小齒輪齒的側面的動作的說明圖。 第16圖，係說明使本發明的第2實施形態之印字單元的可動刀刃回到待命位置的動作的說明圖。 第17圖，係說明使本發明的第2實施形態之熱列印機的載台單元及頭部單元的鎖定解除的動作的說明圖。Fig. 1 is a perspective view showing a state in which the printer cover of the thermal printer according to the first embodiment of the present invention is closed to a closed position. Fig. 2 is a perspective view showing a state in which the printer cover of the thermal printer of the first embodiment of the present invention is opened to the open position. Fig. 3 is a perspective view showing the printing unit of the thermal printer according to the first embodiment of the present invention as seen from below. Fig. 4 is a perspective view showing a state in which the recording paper is cut between the movable blade and the fixed blade of the printing unit according to the first embodiment of the present invention. Fig. 5 is a side view showing the direction of the arrow V in the third view of the printing unit according to the first embodiment of the present invention. Fig. 6 is a cross-sectional view taken along line VI-VI of Fig. 3 showing a printing unit according to the first embodiment of the present invention. Fig. 7 is an explanatory view showing an operation of causing paper jam between the movable blade and the fixed blade of the printing unit according to the first embodiment of the present invention. Fig. 8 is an explanatory view for explaining an operation of returning the movable blade of the printing unit according to the first embodiment of the present invention to the standby position. FIG. 9 is an explanatory view showing an operation of releasing the lock of the stage unit and the head unit of the thermal printer according to the first embodiment of the present invention. Fig. 10 is a perspective view showing the printing unit of the thermal printer of the second embodiment of the present invention as seen from below. Fig. 11 is a cross-sectional view taken along line XI-XI of Fig. 10 showing a printing unit according to a second embodiment of the present invention. Fig. 12 is an explanatory view showing an operation of causing paper jam between the movable blade and the fixed blade of the printing unit according to the second embodiment of the present invention. FIG. 13 is an explanatory view for explaining an operation of engaging the first tooth portion of the first gear of the second embodiment of the present invention with the return pinion. FIG. 14 is an explanatory view showing an operation of passing the first tooth portion of the first gear of the second embodiment of the present invention over the cutting edge of the return pinion. Fig. 15 is an explanatory view showing an operation of abutting the first tooth portion of the blade edge of the pinion tooth of the return pinion in the second embodiment of the present invention against the side surface of the next pinion tooth. Fig. 16 is an explanatory view for explaining an operation of returning the movable blade of the printing unit according to the second embodiment of the present invention to the standby position. FIG. 17 is an explanatory view showing an operation of releasing the lock of the stage unit and the head unit of the thermal printer according to the second embodiment of the present invention.
Claims (10)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-147873 | 2017-07-31 | ||
| JP2017147873 | 2017-07-31 | ||
| JP2017-189157 | 2017-09-28 | ||
| JP2017189157A JP6966279B2 (en) | 2017-07-31 | 2017-09-28 | Printing unit and thermal printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201919918A true TW201919918A (en) | 2019-06-01 |
| TWI763890B TWI763890B (en) | 2022-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW107125459A TWI763890B (en) | 2017-07-31 | 2018-07-24 | Printing unit and thermal printer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6966279B2 (en) |
| CN (1) | CN208946888U (en) |
| TW (1) | TWI763890B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102585600B1 (en) * | 2017-07-31 | 2023-10-06 | 세이코 인스트루 가부시키가이샤 | Printing unit and thermal printer |
| JP7189052B2 (en) * | 2018-12-28 | 2022-12-13 | セイコーインスツル株式会社 | Printing unit and thermal printer |
| JP7515333B2 (en) | 2019-12-02 | 2024-07-12 | セイコーインスツル株式会社 | Printing unit and thermal printer |
| CN111907222A (en) * | 2020-08-17 | 2020-11-10 | 沃博思（厦门）电子科技有限公司 | Printer with cutter |
| CN113263840B (en) * | 2021-04-28 | 2024-07-23 | 宁波精芯科技有限公司 | Thermal printer core |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06231321A (en) * | 1993-01-29 | 1994-08-19 | Orient Watch Co Ltd | Ticket issuing device |
| US5717836A (en) * | 1995-03-09 | 1998-02-10 | Matsushita Electric Industrial Co., Ltd. | Printing apparatus having a retractable curl removal member and reversible roller |
| JP3730153B2 (en) * | 2001-10-18 | 2005-12-21 | セイコーインスツル株式会社 | Printer cutter device |
| JP4174489B2 (en) * | 2005-04-13 | 2008-10-29 | Ｎｅｃインフロンティア株式会社 | Cutter device and printer provided with cutter device |
| BRPI0600439B1 (en) * | 2006-03-06 | 2019-01-22 | Bematech S A | thermal printer and its drive method |
| JP5378900B2 (en) * | 2009-07-29 | 2013-12-25 | セイコーインスツル株式会社 | Cutter mechanism and printer with cutter |
| JP5977619B2 (en) * | 2012-08-23 | 2016-08-24 | 富士通コンポーネント株式会社 | Printer device |
| JP6297862B2 (en) * | 2014-02-28 | 2018-03-20 | 富士通コンポーネント株式会社 | Printer device |
| TWI508870B (en) * | 2014-05-26 | 2015-11-21 | Hiti Digital Inc | Printing device with duplex printing function |
| CN204172502U (en) * | 2014-08-08 | 2015-02-25 | 宁波精芯科技有限公司 | Automatic paper-cutting thermal printer cassette |
| JP6507892B2 (en) * | 2014-08-25 | 2019-05-08 | セイコーエプソン株式会社 | Cutter drive mechanism, cutter and printer |
| CN206049045U (en) * | 2016-08-31 | 2017-03-29 | 重庆品胜科技有限公司 | A kind of cassette mechanism structure |
| CN106864042B (en) * | 2017-02-14 | 2018-01-12 | 厦门容大合众电子科技有限公司 | A compatible three kinds of printing papers and dismounting flying print movement easy to maintenance |
-
2017
- 2017-09-28 JP JP2017189157A patent/JP6966279B2/en active Active
-
2018
- 2018-07-24 TW TW107125459A patent/TWI763890B/en active
- 2018-07-27 CN CN201821210435.9U patent/CN208946888U/en not_active Withdrawn - After Issue
Also Published As
| Publication number | Publication date |
|---|---|
| JP6966279B2 (en) | 2021-11-10 |
| JP2019025888A (en) | 2019-02-21 |
| CN208946888U (en) | 2019-06-07 |
| TWI763890B (en) | 2022-05-11 |
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