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TWI261550B - Thermal printer apparatus - Google Patents

Thermal printer apparatus Download PDF

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Publication number
TWI261550B
TWI261550B TW94112332A TW94112332A TWI261550B TW I261550 B TWI261550 B TW I261550B TW 94112332 A TW94112332 A TW 94112332A TW 94112332 A TW94112332 A TW 94112332A TW I261550 B TWI261550 B TW I261550B
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Taiwan
Prior art keywords
thermal head
paper
thermal
head
printing
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TW94112332A
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Chinese (zh)
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TW200604034A (en
Inventor
Yoshitaka Matsumura
Makoto Sawada
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Sanwa Newtec Co Ltd
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Publication of TW200604034A publication Critical patent/TW200604034A/en
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Publication of TWI261550B publication Critical patent/TWI261550B/en

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Abstract

A thermal printer apparatus includes a platen roller (26), a thermal head elevating cam (30), a rotation sensor (41), and a paper sensor (40). The cam (30) is positioned in parallel with the roller (26). The rotation sensor (41) is provided for detecting the cam (30) being lifted or lowered, to determine whether a thermal head (27) is in a lowered state or in a lifted state. The paper sensor (40) detects whether paper is being properly transported. The thermal printer apparatus also includes a control device. The control device operates to stop power supply to the thermal head (27) when the thermal head (27) is in the lifted state or when paper is not properly transported.

Description

1261550 九、發明說明: 【發明所屬之技術領域】 本發明為關於具有感熱頭(或稱熱感應頭(t h e r m a 1 h e a d ))之感熱式印字裝置,即所謂的感熱式列印裝置 (thermal printer)0 【先前技術】 感熱式列印裝置為在發熱元件之感熱頭使電流流動,再 對其加熱而在感熱紙上形成影像之列印裝置。1261550 IX. Description of the Invention: [Technical Field] The present invention relates to a thermal printing device having a thermal head (or a thermo 1 head), a so-called thermal printer. 0 [Prior Art] A thermal printing device is a printing device that causes a current to flow in a thermal head of a heating element and then heats it to form an image on the thermal paper.

感熱式列印裝置被提案有一種例如使用無色(1 e u c 〇)染 料和可逆顯色劑之發色性可逆感熱記錄材料(例如參照曰 本專利特開2 0 0 4 - 1 0 6 3 0 8號公報),而可連續實施印刷處理 和感熱紙上的影像消除處理之感熱式列印裝置(例如參照 日本專利特開2 0 0 2 - 3 3 1 6 9 7號公報)。 由於影像之形成為依存於感熱頭所發出的熱量,因此, 控制感熱頭的熱量非常重要。又,過度將紙張加熱時,則 紙張會有起火之可能。進一步,在導紙器堵塞或紙張堵塞 之狀態而加熱時也有同樣的危險。因此,自安全性之點而 言控制感熱頭的熱量非常重要。 【發明内容】 (發明所欲解決之問題) 在紙張上要列印影像時,當感熱頭未被壓到平壓滾子 (p 1 a t e n r ο 1 1 e r )之狀態而對感熱頭施力口力口熱電流時,由於 其在未放熱之狀態僅實施加熱,因此,感熱頭會有過熱而 損壞之虞。 5 312XP/發發明說明書(補件)/9^08/94112332A thermochromic printing device is proposed to have a color-developing reversible thermal recording material such as a colorless (1 euc 〇) dye and a reversible color developing agent (for example, refer to Japanese Patent Laid-Open No. 2 0 0 4 - 1 0 6 3 0 8 A thermal printing device capable of continuously performing a printing process and an image erasing process on a thermal paper (for example, refer to Japanese Patent Laid-Open Publication No. Hei 2 0 0 2 - 3 3 169 7). Since the formation of the image is dependent on the heat generated by the thermal head, it is important to control the heat of the thermal head. Also, when the paper is heated excessively, the paper may be ignited. Further, there is a similar risk when the paper guide is clogged or the paper is clogged. Therefore, it is very important to control the heat of the thermal head from the point of safety. SUMMARY OF THE INVENTION (Problems to be Solved by the Invention) When an image is to be printed on a sheet of paper, when the thermal head is not pressed to the flat pressure roller (p 1 atenr ο 1 1 er ), the heat head is applied to the heat head. When the thermal current is applied to the port, since it is only heated in a state where it is not exothermic, the thermal head may be overheated and damaged. 5 312XP / issued invention manual (supplement) / 9^08/94112332

1261550 又,在堵塞之狀態下,維持感熱頭通電時,則由於感 頭僅在紙張的同一位置連續加熱,因此則會有溫度上升 問題點。 本發明為了解決上述課題而所完成,其提供一種可檢 出感熱頭的升降位置、紙張的搬送狀況而可實施感熱頭 加熱控制的感熱式列印裝置。 (解決問題之手段) 本發明其特徵為,具備有:在紙張上可印刷影像之感 頭;及, 和前述感熱頭對向之平壓滚子(platen roller);及 可將前述感熱頭對前述平壓滾子升降推壓及解除推壓 之感熱頭升降裝置;及, 可檢測出對前述感熱頭之前述平壓滾子的升降狀態之 感熱頭升降位置感測器;及, 對前述感熱頭可供給加熱電流而驅動前述感熱頭之感 熱頭驅動電路;及, 在前述感熱頭升降位置感測器檢測出前述感熱頭對前 述平壓滾子未被推壓之狀態時,可指示使前述感熱頭的 動停止之控制手段。 本發明之感熱頭被構成可藉感熱頭升降裝置而上升或 下降。藉感熱頭升降位置感測器其可檢測出感熱頭之升 狀態,在感熱頭對平壓滾子未被推壓時,即使是印字時 (timing)其也可禁止對感熱頭通電。 又,本發明為具備有··在紙張上可印刷影像之感熱頭 312XP/發發明說明書(補件)/94-08/94112332 献 之 測 之 孰 驅 降 機 61261550 In addition, in the state of clogging, when the thermal head is energized, the sensor is continuously heated only at the same position of the paper, so there is a problem of temperature rise. The present invention has been made to solve the above problems, and provides a thermal printing apparatus capable of detecting a heating position of a thermal head and a conveyance state of a paper, thereby enabling heating head heating control. (Means for Solving the Problem) The present invention is characterized in that: a sensor head capable of printing an image on paper; and a platen roller opposed to the thermal head; and the pair of thermal heads a thermal head lifting device for lifting and unloading the flat roller; and a thermal head lifting position sensor capable of detecting a lifting state of the flat roller of the thermal head; and a head capable of supplying a heating current to drive the thermal head driving circuit of the thermal head; and, when the thermal head lifting position sensor detects that the thermal head is not pressed by the flat roller, The control method of the dynamic stop of the thermal head. The thermal head of the present invention is constructed to be raised or lowered by a thermal head lifting device. The thermal head lifting position sensor can detect the rising state of the thermal head, and when the thermal head is not pressed against the flat roller, it can prohibit energization of the thermal head even if it is timing. Further, the present invention is a heat-driven head 312XP/inventive manual (supplement)/94-08/94112332 which is capable of printing an image on paper.

1261550 及’ 和前述感熱頭對向之平壓滾子;及5 對前述感熱頭可供給加熱電流而驅動前述感熱頭之 熱頭驅動電路;及, 可檢測出在前述感熱頭的位置是否有紙張之紙張感 器;及, 可檢測出前述平壓滚子是否在迴轉狀態之迴轉感測 其特徵為, 前述控制手段為:當前述紙張感測器檢測出在感熱 位置沒有紙張時,或迴轉感測器檢測出平壓滚子未迴 可指示前述感熱頭的驅動停止之控制手段。 本發明為藉紙張感測器可檢測出紙張是否在正確地 送,當紙張堵塞時,即使是印字時機也可對感熱頭遮 力之供給。 (發明效果) 根據本發明,在印字動作時,其時常以感熱頭升降 感測器監視感熱頭的升降狀態,在感熱頭未在下降點 置之狀態,或平壓滚子未在被推壓之狀態時,則藉對 頭停止電力供給,如此而可防止感熱頭過熱,而可迴 熱頭之損傷。 又,以紙張感測器可探測出紙張是否在搬送狀態, 張堵塞時,則藉對感熱頭停止電力供給,如此可防止 頭的溫度上升到容許溫度範圍(-3 0 ° C〜+ 7 0 ° C )以上 【實施方式】 312XP/發發明說明劃補件)/94-08/94112332 感 測 ΟΌ , 頭的 轉時 搬 斷電 位置 的位 感熱 避感 當紙 感熱 7 1261550 圖1表示本發明之實施形態的感熱式列印裝置1之外觀 圖。 在圖1中,在感熱式列印裝置1的背面上部設有供紙盤 2、在感熱式列印裝置1上面設有上蓋3,在感熱式列印裝 置1的上面右側設有操作面板(p a n e 1 ) 4,在感熱式列印裝 置1的前面設有排紙盤5。在上蓋3的内部收容有圖2所 示之機構部。1261550 and 'the above-mentioned thermal head opposite to the flat pressure roller; and 5 to the thermal head can supply a heating current to drive the thermal head driving circuit of the thermal head; and, can detect whether there is paper at the position of the thermal head And a paper sensor capable of detecting whether the flat pressure roller is in a swing state, wherein the control means is: when the paper sensor detects that there is no paper in the heat sensitive position, or the sense of rotation The detector detects that the flat pressure roller is not returned to indicate the control means for stopping the driving of the thermal head. According to the present invention, it is possible to detect whether or not the paper is correctly fed by the paper sensor, and when the paper is clogged, the supply of the thermal head can be blocked even at the timing of printing. (Effect of the Invention) According to the present invention, during the printing operation, the thermal head raising and lowering sensor is often used to monitor the raising and lowering state of the thermal head, and the thermal head is not placed at the lowering point, or the flat roller is not being pressed. In the state of the state, the power supply is stopped by the head, thereby preventing the thermal head from overheating and recovering the damage of the head. In addition, the paper sensor can detect whether the paper is in the transport state, and when the jam is blocked, the power supply is stopped by the thermal head, so that the temperature of the head can be prevented from rising to the allowable temperature range (-3 0 ° C~+ 7 0 ° C) Above [Embodiment] 312XP/Invention Description) /94-08/94112332 Sensing ΟΌ, the sense of heat in the position of the head when the power is turned off, the heat of the paper when the paper is sensitive 7 1261550 Figure 1 shows the invention An external view of the thermal printing device 1 of the embodiment. In FIG. 1, a paper feed tray 2 is disposed on the upper surface of the back surface of the thermal printing apparatus 1, and an upper cover 3 is disposed on the upper surface of the thermal printing apparatus 1, and an operation panel is provided on the upper right side of the thermal printing apparatus 1 ( Pane 1) 4, a paper discharge tray 5 is provided in front of the thermal printing device 1. The mechanism portion shown in Fig. 2 is housed inside the upper cover 3.

感熱式列印裝置1所使用之感熱紙為,例如,以基材; 及,由無色染料和可逆顯色劑所成之可逆感熱層;及,保 護層;如此所構成。此處所使用之發色性可逆感熱記錄材 料為,例如,在專利文獻1所記載者。可逆感熱層的性質 為如下。亦即,如圖5,當感熱層被加熱成為熔融狀態後 (加熱到超過熔融點1 0 1 ),當急遽冷卻時則會走向路徑 1 0 3而成為發色狀態1 0 2。一方面,在加熱變成熔融狀態 後,如緩慢地冷卻時則前進到路徑1 〇 4而變成消色狀態 1 0 5。在發色狀態1 0 2時,即使保持於比熔融點1 0 1稍低的 溫度亦變成消色狀態。 圖2為感熱式列印裝置1之機構部的内部剖面圖。在圖 2中,於搖動部2 1的下側形成導紙件2 2,在上述搖動部 2 1和導紙件2 2間形成有紙張搬送路。沿著導紙件2 2自供 紙側朝排紙側,設有紙張上影像消除之處理部2 8、印字處 理部2 9。在前述消除處理部2 8和前述印字處理部2 9之 間,設有冷卻扇2 5。前述冷卻扇2 5為藉消除滾子2 3的溫 度而可冷卻蓄熱之紙張及導紙件2 2者。藉此,則可維持穩 312XP/發發明說明書(補件)/94-08/94112332 1261550 定的印刷濃度。 在印字處理部2 9,設有感熱頭升降用凸輪3 0、未圖示 之感熱頭升降用馬達、感熱頭升降位置感測器3 1。The thermal paper used in the thermal printing device 1 is, for example, a substrate; and a reversible thermal layer made of a leuco dye and a reversible color developing agent; and a protective layer; The color-developable reversible thermal recording material used herein is, for example, those described in Patent Document 1. The properties of the reversible thermosensitive layer are as follows. That is, as shown in Fig. 5, when the heat sensitive layer is heated to a molten state (heated to a temperature exceeding the melting point of 1 0 1 ), when it is cooled rapidly, it will travel to the path 1 0 3 to become a color developing state 1 0 2 . On the one hand, after the heating becomes molten, if it is slowly cooled, it proceeds to the path 1 〇 4 to become the achromatic state 1 0 5 . In the chromophoric state of 1 0 2, even if it is kept at a temperature slightly lower than the melting point 1 0 1 , it becomes a decolorized state. 2 is an internal cross-sectional view of the mechanism portion of the thermal printing device 1. In Fig. 2, a paper guide 2 2 is formed on the lower side of the rocking portion 21, and a paper conveyance path is formed between the rocking portion 21 and the paper guide 22. A process unit 28 for printing on the paper and a printing unit 29 are provided along the paper guide 2 2 from the paper supply side toward the paper discharge side. A cooling fan 25 is provided between the above-described erasing processing unit 28 and the above-described printing processing unit 29. The cooling fan 25 is configured to cool the heat-storing paper and the paper guide 22 by eliminating the temperature of the roller 23. By this, the printing density of the stable 312XP/inventive specification (supplement)/94-08/94112332 1261550 can be maintained. In the printing processing unit 2 9, a thermal head raising/lowering cam 30, a thermal head raising/lowering motor (not shown), and a thermal head lifting position sensor 31 are provided.

感熱頭升降用凸輪3 0為被平行安裝在平壓滾子2 6的排 紙側。前述感熱頭升降用凸輪3 0具有較短直徑部、較長直 徑部,此感熱頭升降用凸輪3 0藉未圖示之感熱頭升降用馬 達的迴轉而可使感熱頭2 7升降。亦即,較短直徑部抵接在 感熱頭支架(holder)時,感熱頭27會下降而成為按壓在紙 張上之狀態,當較長直徑部抵接在感熱頭支架時,感熱頭 2 7則變成上升之狀態。 感熱頭升降位置感測器3 1為被配置在前述感熱頭升降 用凸輪3 0的周圍2個位置。前述感熱頭升降位置感測器 31為光感測器(photosensor),被安裝在感熱頭升降用凸 輪3 0而未圖示的檢測用圓盤之輪轂則可遮斷進入感熱頭 升降位置感測器3 1的光,而檢測出感熱頭2 7之升降位置。 前述感熱頭升降用馬達為在平壓滾子2 6的供紙側被設 成和前述平壓滾子2 6平行。藉此感熱頭升降用馬達之迴 轉,感熱頭升降用凸輪3 0則可迴轉。 在感熱式列印裝置1中,例如,當連續實施紙張上之影 像消除、印刷處理時,首先,選擇圖1之操作面板4的操 作。選擇操作面板4之操作時,控制部3 3 (參照圖3 )則 發送資料。依照該發送之資料,前述控制部3 3則判斷是否 開始印刷。 當控制部3 3判斷開始印刷時,則自控制部3 3對驅動電 9 312XP/發發明說明書(補件)/94-08/94]12332 1261550The thermal head lifting cams 30 are mounted in parallel on the paper discharge side of the flat roller 26. The thermal head raising/lowering cam 30 has a short diameter portion and a long diameter portion, and the thermal head raising/lowering cam 30 can be moved up and down by the rotation of the thermal head raising and lowering motor (not shown). That is, when the shorter diameter portion abuts against the thermal head holder, the thermal head 27 is lowered to be pressed against the paper, and when the longer diameter portion abuts against the thermal head holder, the thermal head 27 is It becomes a rising state. The thermal head lifting position sensor 31 is disposed at two positions around the above-described thermal head lifting cam 30. The thermal head lifting position sensor 31 is a photosensor, and is attached to the thermal head lifting cam 30, and the hub of the detecting disc (not shown) can be blocked from entering the thermal head lifting position sensing. The light of the device 3 1 detects the lifting position of the thermal head 27. The thermal head raising/lowering motor is disposed in parallel with the flat pressing roller 26 on the paper feed side of the flat roller 26. Thereby, the motor for lifting and lowering the head is rotated, and the cam for lifting the head 350 can be rotated. In the thermal printing apparatus 1, for example, when image removal and printing processing on paper are continuously performed, first, the operation of the operation panel 4 of Fig. 1 is selected. When the operation of the operation panel 4 is selected, the control unit 3 3 (see Fig. 3) transmits the material. Based on the transmitted information, the control unit 33 determines whether or not to start printing. When the control unit 33 determines to start printing, the self-control unit 3 3 drives the drive 9 312XP/invents the specification (supplement)/94-08/94] 12332 1261550

路3 8 (參照圖3 )發送信號。在前述驅動電路3 8發送信號 時,前述驅動電路3 8則使馬達3 7驅動(參照圖3 ),藉由 供紙滾子2 0 (參照圖2 ),裝在供紙盤2的紙張則自供紙側 對排紙側搬送,亦即對消除滾子2 3側搬送,紙張開始搬送 時,紙張感測器4 0則檢測出是否在正確地搬送紙張。紙張 被正確地搬送時,控制部3 3則對加熱處理部3 6(參照圖3 ) 發送信號。前述加熱處理部3 6對消除滾子2 3加熱再使消 除滚子2 3驅動。同時控制部3 3對驅動電路3 8發送信號, 並依照所發送之信號使平壓滾子24驅動。 當消除滚子2 3消除紙張上的影像時,紙張則被搬送至 感熱頭2 7的位置。此時,藉紙張感測器4 0檢測出紙張是 否正在確實地搬送。當紙張在正確地被搬送時,則迴轉感 測器4 1 (參照圖3 )檢測出升降凸輪3 0的位置,再檢測出 感熱頭2 7之升降狀態。當檢測出感熱頭2 7被推壓在平壓 滾子2 6時,控制部3 3則對感熱頭驅動電路3 5 (參照圖3 ) 發送信號。在前述感熱頭驅動電路3 5被發送信號時,前述 感熱頭驅動電路35則使感熱頭加熱。 此時,内藏在感熱頭2 7之未圖示的溫度感測器則讀取 並監視感熱頭2 7近傍的溫度上升。其容許溫度範圍為-3 0 °C〜+ 7 0 °C,在接近上限7 0 °C例如超過6 8 °C時,印刷處理的 印刷終止時,則使對下一張紙張的讀取動作暫時成停止狀 態,並繼續監視溫度。當溫度下降到可再開始印字之例如 6 5 °C時則自動的再開始印字動作。 在印刷中,以設在未圖示之紙張搬送路的紙張感測器4 0 10 312XP/發發明說明書(補件)/94-08/94112332 1261550 來探測紙張的終端,當判斷殘餘的印字量不能容納入紙張 終端時,則藉限制殘餘的印字量,而防止印字狀態的紙張 終端通過感熱頭2 7。 當對紙張的印刷終了時,則在排紙盤5 (參照圖1 )上積 載紙張。 圖3為上述感熱式列印裝置1之方塊圖。Path 3 8 (refer to Figure 3) sends a signal. When the drive circuit 38 transmits a signal, the drive circuit 38 drives the motor 37 (see FIG. 3), and the paper loaded on the paper feed tray 2 is fed by the paper feed roller 20 (see FIG. 2). When the paper feed side is conveyed to the paper discharge side, that is, when the roller 2 3 side is conveyed, and the paper starts to be conveyed, the paper sensor 40 detects whether or not the paper is correctly conveyed. When the paper is correctly conveyed, the control unit 33 transmits a signal to the heat processing unit 36 (see Fig. 3). The heat treatment unit 36 heats the eliminating roller 23 and drives the eliminating roller 23 to drive. At the same time, the control unit 33 sends a signal to the drive circuit 38, and drives the flat roller 24 in accordance with the transmitted signal. When the roller 2 3 is removed to eliminate the image on the paper, the paper is transported to the position of the thermal head 27 . At this time, it is detected by the paper sensor 40 whether the paper is being conveyed reliably. When the paper is correctly conveyed, the rotation sensor 4 1 (see Fig. 3) detects the position of the elevation cam 30, and detects the elevation state of the thermal head 27. When it is detected that the thermal head 27 is pressed against the flat roller 26, the control unit 3 3 transmits a signal to the thermal head drive circuit 35 (see Fig. 3). When the thermal head drive circuit 35 is transmitting a signal, the thermal head drive circuit 35 heats the thermal head. At this time, the temperature sensor (not shown) built in the thermal head 27 reads and monitors the temperature rise of the thermal head 27 near the temperature. The allowable temperature range is -3 0 °C to + 70 °C, and when the printing process is terminated at the end of the upper limit of 70 °C, for example, over 68 °C, the next sheet of paper is read. Temporarily enters a stop state and continues to monitor the temperature. When the temperature drops to, for example, 6 5 °C, the printing can be resumed automatically. In the printing, the paper sensor terminal 4 0 10 312XP/inventive manual (supplement)/94-08/94112332 1261550 provided in a paper conveyance path (not shown) is used to detect the end of the paper, and the remaining printing amount is judged. When it is not possible to accommodate the paper terminal, the paper terminal that prevents the printing state is passed through the thermal head 27 by limiting the amount of remaining printing. When the printing of the paper is finished, the paper is accumulated on the paper discharge tray 5 (refer to Fig. 1). 3 is a block diagram of the above thermal printing device 1.

感熱式列印裝置1為在感熱頭2 7實施既定的通電而藉 使感熱頭加熱而可對紙張實施印刷之感熱式列印裝置1。 感熱式列印裝置1依照主電腦(主機)4 3的影像資料而印 刷。 感熱式列印裝置1為具有:控制部3 3、控制器 (control ler)I/F34 '操作部32、感熱頭27、感熱頭驅動 電路3 5、紙張感測器4 0、迴轉感測器41、消除滾子2 3、 平壓滾子2 4、加熱處理部3 6、馬達3 7、驅動電路3 8、升 降裝置39 。 要印刷之影像資料或印刷等的指示為被供給至由ROM或 R A Μ、C P U等必要之周邊電路所構成的控制部3 3。 控制器I / F 3 4可變換由主電腦(主機)4 3對控制部3 3發 送的信號,或由控制部3 3對主電腦(主機)4 3發送的信號。 當使用者選擇操作時,操作部3 2則對控制部3 3發送信號。 由此,感熱頭2 7可對紙張實施點單位的印刷。 感熱頭驅動電路3 5為藉由控制部3 3的指不而生成以點 單位使感熱頭2 7加熱之驅動信號。 紙張感測器4 0可監視紙張是否在正確地被搬送。紙張 11 312ΧΡ/發發明說明書(補件)/94-08/94112332 1261550 未被正確地搬送時,控制部3 3則會對感熱頭2 7遮斷驅動 電壓,而停止對感熱頭27之電力供給。 迴轉感測器4 1可監視感熱頭2 7之升降狀態。迴轉感測 器4 1並可檢測出被安裝於和平壓滾子2 6平行位置的感熱 頭升降用凸輪3 0之位置,在感熱頭2 7未完全下降時,控 制部3 3則會對感熱頭2 7遮斷驅動電壓,而對感熱頭2 7 停止電力之供給。 消除滚子2 3則可實施紙張上的影像之加熱消除。The thermal printing device 1 is a thermal printing device 1 that can perform printing on a sheet of paper by heating the thermal head with a predetermined energization of the thermal head 27. The thermal printing device 1 is printed in accordance with the image data of the host computer (host) 43. The thermal print device 1 includes a control unit 33, a controller I/F 34' operation unit 32, a thermal head 27, a thermal head drive circuit 35, a paper sensor 40, and a rotary sensor. 41. The roller 2 3, the flat roller 2 4, the heat treatment unit 36, the motor 37, the drive circuit 38, and the lifting device 39 are eliminated. The instruction for the image data to be printed, the printing, or the like is supplied to the control unit 33 composed of a peripheral circuit necessary for the ROM, R A Μ, C P U or the like. The controller I / F 3 4 can convert a signal transmitted from the host computer (host) 43 to the control unit 3 3 or a signal transmitted from the control unit 33 to the host computer (host) 43. When the user selects an operation, the operation unit 32 transmits a signal to the control unit 33. Thereby, the thermal head 27 can perform dot unit printing on the paper. The thermal head driving circuit 35 generates a driving signal for heating the thermal head 27 in units of dots by the finger of the control unit 33. The paper sensor 40 can monitor whether the paper is being transported correctly. When the paper 11 312 ΧΡ/发 invention manual (supplement)/94-08/94112332 1261550 is not correctly conveyed, the control unit 3 3 blocks the driving voltage of the thermal head 27 and stops the supply of electric power to the thermal head 27. . The swing sensor 4 1 can monitor the lift state of the thermal head 27. The rotation sensor 4 1 can detect the position of the thermal head lifting cam 30 which is mounted in the parallel position of the flat roller 2 6 , and the control unit 3 3 will be sensitive to heat when the thermal head 27 is not completely lowered. The head 2 7 blocks the driving voltage and stops the supply of power to the thermal head 2 7 . Eliminating the roller 2 3 eliminates the heating of the image on the paper.

加熱處理部3 6可藉由控制部3 3的指示而實施消除滾子 2 3之加熱。 馬達3 7為被設在導紙件2 2上而藉此運送紙張。 驅動電路3 8可藉由控制部3 3所發出之指示而驅動馬達 37 ° 升降裝置3 9可使感熱頭2 7升降。 例如,使用者選擇操作部3 2的印刷操作時,則自操作 部3 2發送資料至控制部3 3。依照該資料前述控制部3 3則 判斷是否開始印刷。 當控制部3 3判斷印刷開始時,則自控制部3 3對驅動電 路3 8發送信號。驅動電路3 8收到信號時,驅動電路3 8 則驅動馬達3 7。馬達3 7驅動時,供紙滾子2 0則從供紙侧 對排紙側搬送被裝在供紙盤2的紙張,亦即對消除滚子2 3 側搬送。 其次,紙張感測器4 0檢測出是否正確地搬送紙張。紙 張被正確地搬送時,迴轉感測器4 1則檢測出升降裝置3 9 12 3 ] 2XP/發發明說明書(補件)/94-08/94112332 1261550The heat treatment unit 36 can perform the heating of the elimination roller 23 by the instruction of the control unit 33. The motor 37 is placed on the paper guide 22 to transport the paper. The drive circuit 38 can drive the motor 37 by the instruction from the control unit 33. The lift device 39 can raise and lower the thermal head 27. For example, when the user selects the printing operation of the operation unit 32, the data is transmitted from the operation unit 32 to the control unit 33. According to the data, the control unit 3 3 determines whether or not printing is started. When the control unit 33 determines that the printing is started, the control unit 33 transmits a signal to the drive circuit 38. When the drive circuit 38 receives the signal, the drive circuit 38 drives the motor 37. When the motor 3 7 is driven, the paper feed roller 20 conveys the paper loaded on the paper feed tray 2 from the paper feed side to the paper discharge side, that is, the paper is conveyed toward the elimination roller 2 3 side. Next, the paper sensor 40 detects whether or not the paper is correctly conveyed. When the paper is correctly conveyed, the swing sensor 4 1 detects the lifting device 3 9 12 3 3 2 2/Inventive Manual (supplement) / 94-08/94112332 1261550

之感熱頭升降用凸輪3 0的位置。檢測出感熱頭升降用凸輪 3 0之位置的結果,當感熱頭2 7被平壓滾子2 6推壓時,控 制部3 3則對感熱頭驅動電路3 5發送信號。當對感熱頭驅 動電路3 5發送信號時,則在容許溫度範圍内使感熱頭2 7 加熱。感熱頭2 7在容許範圍内被加熱時,感熱頭2 7在紙 張上可實施印刷。此時,在接近容許範圍(-3 0 °C〜+ 7 0 °C ) 的上限7 0 °C例如超過6 8 °C之時點,印刷處理中的紙張的印 刷終了時,則使下次之紙張的讀取動作成為暫時停止之狀 態,而繼續監視溫度,當溫度下降到可再開始印字之例如 6 5 °C時,則自動地再開始印字動作。 另一方面,感熱頭2 7未被平壓滾子2 6推壓時,控制部 3 3則對感熱頭2 7遮斷電力之供給。 當紙張的印刷終了時,在排紙盤5上則積載紙張。 其次使用圖4說明感熱式列印裝置1之詳細動作。圖4 為感熱式列印裝置1之實施形態的流程圖。 首先,控制部3 3接收並輸入自主電腦(主機)4 3所發 送的作業(j 〇 b )資料(S 1 )。此時,接收到消除資料或消除 印刷資料時,則使消除滾子2 3上升到可消除之溫度 (1 2 0〜2 0 0 °C )。其次,控制部3 3依照輸入資料而判斷是否 紙張在開始印刷(S 2 )。其未開始時則返回起點。 另一方面,開始印刷時,則供紙滾子2 0將紙張搬送至 感熱頭2 7的位置(S 3 )。紙張到達感熱頭2 7時,則檢測出 紙張是否在搬送(S 4 )。當檢測出之資料被輸入至控制部 3 3時,控制部3 3依照輸入資料,假如紙張未被正確地搬 13 312XP/發發明說明書(補件)/94-08/94112332 1261550 送時,則對感熱頭2 7停止電力供給(S 5 )。其次,實施錯 誤停止(S 6 ),使搖動部2 1開口而取出紙張(S 7 )並返回 起點。 紙張被正確搬送時,則檢測出感熱頭升降用凸輪的位 置,並檢測出感熱頭2 7是否在下降點位置(S 8 )。檢測資 料被輸入至控制部3 3。其次,控制部3 3依照輸入資料,The position of the cam 30 for the thermal head lifting. As a result of detecting the position of the thermal head raising cam 30, when the thermal head 27 is pressed by the flat roller 26, the control unit 3 sends a signal to the thermal head driving circuit 35. When the signal is applied to the thermal head driving circuit 35, the thermal head 27 is heated within the allowable temperature range. When the thermal head 2 7 is heated within the allowable range, the thermal head 27 can perform printing on the paper. At this time, when the upper limit of the allowable range (-3 0 °C to + 70 °C) is 70 °C, for example, more than 68 °C, when the printing of the paper in the printing process is finished, the next time The reading operation of the paper is temporarily stopped, and the temperature is continuously monitored. When the temperature is lowered to, for example, 65 ° C, where printing can be resumed, the printing operation is automatically resumed. On the other hand, when the thermal head 27 is not pressed by the flat roller 26, the control unit 3 blocks the supply of electric power to the thermal head 27. When the printing of the paper is finished, the paper is stowed on the paper discharge tray 5. Next, the detailed operation of the thermal printing apparatus 1 will be described using FIG. 4 is a flow chart showing an embodiment of the thermal printing device 1. First, the control unit 3 3 receives and inputs the job (j 〇 b ) data (S 1 ) transmitted from the host computer (host) 43. At this time, when the canceled data is received or the printed data is erased, the elimination roller 2 3 is raised to a temperature that can be eliminated (1 2 0 to 2 0 0 ° C). Next, the control unit 3 3 determines whether or not the paper is starting printing in accordance with the input data (S 2 ). When it does not start, it returns to the starting point. On the other hand, when printing is started, the paper feed roller 20 transports the paper to the position of the thermal head 27 (S 3 ). When the paper reaches the thermal head 2 7 , it is detected whether or not the paper is being conveyed (S 4 ). When the detected data is input to the control unit 33, the control unit 3 3, in accordance with the input data, if the paper is not correctly transported, the paper is sent by the 312XP/inventive manual (supplement)/94-08/94112332 1261550. The power supply to the thermal head 2 7 is stopped (S 5 ). Next, an error stop is performed (S 6 ), the rocking portion 21 is opened, and the paper (S 7 ) is taken out and returned to the starting point. When the paper is correctly conveyed, the position of the thermal head raising cam is detected, and it is detected whether or not the thermal head 27 is at the falling point position (S 8 ). The detection data is input to the control unit 33. Next, the control unit 3 3 follows the input data.

當感熱頭2 7在下降點時,則在紙張上實施印刷(S 9 )。 當印刷處理終了時,紙張被排出至排紙盤5 ( S 1 0 )。 在印刷處理中,時常監視紙張是否在搬送,或感熱頭2 7 是否在下降點,當紙張未被正確地搬送時,或感熱頭2 7 不在下降點時,則對感熱頭2 7停止電力供給,而將紙張排 出至排紙盤5。 【圖式簡單說明】 圖1表示本發明之實施形態的感熱式列印裝置之外觀 圖。 圖2表示感熱式列印裝置之内部的剖面圖。 圖3表示感熱式列印裝置之全體構成的方塊圖。 圖4表示感熱式列印裝置之印刷許可的判斷順序之流程 圖。 圖5表示在上述感熱式列印裝置可使用之紙張的可逆感 熱層之發色濃度和溫度的關係圖。 【主要元件符號說明】 1 感熱式列印裝置 2 供紙盤 14 312XP/發發明說明書(補件)/94-08/94112332 1261550 3 上蓋 4 操作面板 5 排紙盤 2 0 供紙滾子 2 1 搖動部 2 2 導紙件 2 3 消除滾子 2 4 平壓滚子When the thermal head 27 is at the falling point, printing is performed on the sheet (S9). When the printing process is finished, the paper is discharged to the discharge tray 5 (S 1 0). In the printing process, it is often monitored whether the paper is being conveyed, or whether the thermal head 2 7 is at the falling point, when the paper is not correctly conveyed, or when the thermal head 27 is not at the falling point, the power supply to the thermal head 27 is stopped. And the paper is discharged to the discharge tray 5. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the appearance of a thermal printing device according to an embodiment of the present invention. Figure 2 is a cross-sectional view showing the inside of the thermal printing device. Fig. 3 is a block diagram showing the overall configuration of the thermal printing device. Fig. 4 is a flow chart showing the judgment sequence of the printing permission of the thermal printing device. Fig. 5 is a graph showing the relationship between the color development density and the temperature of the reversible heat-sensitive layer of the paper which can be used in the above-described thermal printing apparatus. [Main component symbol description] 1 Thermal printing device 2 Paper feed tray 14 312XP/Inventive manual (supplement)/94-08/94112332 1261550 3 Upper cover 4 Operation panel 5 Paper discharge tray 2 0 Paper feed roller 2 1 Shake 2 2 paper guide 2 3 elimination roller 2 4 flat roller

2 5 冷卻扇 26 平壓滚子 2 7 感熱頭 28 消除處理部 2 9 印字處理部 30 感熱頭升降用凸輪 3 1 感熱頭升降位置感測器2 5 Cooling fan 26 Flat roller 2 7 Thermal head 28 Elimination processing unit 2 9 Printing processing unit 30 Thermal head lifting cam 3 1 Thermal head lifting position sensor

3 3 控制部3 3 Control Department

34 控制器I / F 3 5 感熱頭驅動電路 36 加熱處理部 3 7 馬達 3 8 驅動電路 3 9 升降裝置 4 0 紙張感測器 312XP/發發明說明書(補件)/94-08/94112332 15 1261550 4 1 迴轉感測器 4 3 主電腦(主機) 10 1 熔融點 10 2 發色狀態 1 0 3、1 0 4 路徑 10 5 消色狀態34 Controller I / F 3 5 Thermal head drive circuit 36 Heat treatment unit 3 7 Motor 3 8 Drive circuit 3 9 Lifting device 4 0 Paper sensor 312XP / Invention manual (supplement) /94-08/94112332 15 1261550 4 1 Rotary sensor 4 3 Main computer (main unit) 10 1 Melting point 10 2 Color status 1 0 3, 1 0 4 Path 10 5 Decolorization

312XP/發發明說明書(補件)/94-08/94112332312XP / issued invention manual (supplement) /94-08/94112332

Claims (1)

1261550 十、申請專利範圍: 1 . 一種感熱式列印裝置,其特徵為,其具有: 在紙張上可印刷影像之感熱頭(t h e r m a 1 h e a d );及, 和前述感熱頭相對向之平壓滾子;及, 可將前述感熱頭對前述平壓滾子作升降按壓及解除按 壓之感熱頭升降裝置;及, 可檢測出前述感熱頭對前述平壓滾子的升降狀態之感 熱頭升降位置感測器;及,1261550 X. Patent application scope: 1. A thermal printing device, characterized in that it has: a thermocouple head (therma 1 head) capable of printing an image on paper; and, a flat pressure roller opposite to the aforementioned thermal head And a thermal head lifting device capable of lifting and releasing the heat-sensitive head to the flat-rolling roller; and detecting a lifting position of the thermal head of the thermal head to raise and lower the flat roller Detector; and, 可對前述感熱頭供給加熱電流而驅動前述感熱頭之感 熱頭驅動電路;及, 當前述感熱頭升降位置感測器檢測出前述感熱頭對前 述平壓滾子未被按壓之狀態時,則指示前述感熱頭驅動停 止之控制手段。 2 . —種感熱式列印裝置,其特徵為,其具備有: 在紙張上可印刷影像之感熱頭;及 和前述感熱頭相對向之平壓滾子;及, 可對前述感熱頭供給加熱電流而驅動前述感熱頭之感 熱頭驅動電路;及 可檢測出在前述感熱頭的位置是否有紙張之紙張感測 器;及, 可檢測出前述平壓滚子是否在迴轉之迴轉感測器, 前述控制手段具有當前述紙張感測器檢測出在感熱頭 的位置沒有紙張時,或迴轉感測器檢測出平壓滚子未在迴 轉時則指示停止前述感熱頭驅動之控制手段。 17 312XP/發發明說明書(補件)/94-08/94112332a thermal head driving circuit capable of supplying a heating current to the thermal head to drive the thermal head; and, when the thermal head lifting position sensor detects that the thermal head is not pressed by the flat roller, indicating The control means for stopping the heating head drive. 2 . A thermal printing device, comprising: a thermal head capable of printing an image on a paper; and a flat pressing roller opposite to the thermal head; and heating the thermal head a thermal head driving circuit for driving the thermal head; and a paper sensor capable of detecting whether there is paper at the position of the thermal head; and a rotation sensor capable of detecting whether the flat roller is rotating The control means has a control means for instructing to stop the driving of the thermal head when the paper sensor detects that there is no paper at the position of the thermal head, or when the rotary sensor detects that the flat pressure roller is not rotating. 17 312XP / issued invention manual (supplement) /94-08/94112332
TW94112332A 2004-05-18 2005-04-19 Thermal printer apparatus TWI261550B (en)

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