1273986 九、發明說明： 【發明所屬之技術領域】 • 本發明係有關於一種列印裝置，特別係有關於一種光 ‘ 致變色列印裝置。 【先前技術】 目前常用的印表機型態大致可分為喷墨印表機以及曹 射印表機兩種。*般而s 5習知贺墨印表機普遍存在列印 圖像精細程度不足的缺點，雖然採用極小墨滴方式列印可 1 以改善上述問題，但是列印速度則會受到很大影響。另一 方面，習知雷射印表機在列印速度和精度的表現上雖然較 喷墨印表機更佳，但是其具有結構複雜、體積龐大以及成 本較高之缺點，此外在設計和製造上亦較為困難。 【發明内容】 本發明提供一種光致變色列印裝置，用以列印於一記 錄媒體，包括一光致變色墨水、一喷墨機構以及一光源。 上述喷墨機構具有一喷孔，其中光致變色墨水係由喷墨機 > 構内部經過喷孔而喷射至前述記錄媒體上。上述光源發射 一光線至前述光致變色墨水，藉以改變上述光致變色墨水 的化學特性。 於一較佳實施例中，前述光線係照射於落在記錄媒體 上之光致變色墨水並使其顯色。 於一較佳實施例中，前述光線係照射於記錄媒體上一 部分之光致變色墨水，藉以在記錄媒體上形成一文字或圖 像。 0535-A21374TWF(N2)；F05043；TKLIN 5 1273986 於一較佳實施例中，前述光線係照射於噴墨機構中之 光致變色墨水，藉以改變上述光致變色墨水的化學特性， 再經由喷孔將前述光致變色墨水喷射至記錄媒體上。 於一較佳實施例中，前述光致變色列印裝置係藉由控 制光線之強度或者光線之輸出脈衝頻率，以控制前述光致 變色墨水之灰階深淺。 於一較佳實施例中，前述喷墨列印裝置更包括一圖像 固化裝置，用以對記錄媒體上之光致變色墨水進行固化， 使得光致變色墨水顯現並維持一特定顏色。 於一較佳實施例中，前述固化裝置係可透過紫外線、 紅外線、加熱或者化學覆蓋之方式作用於前述光致變色墨 水0 於一較佳實施例中，前述光線之方向大致垂直於喷孔 之方向。 於一較佳實施例中，前述光線之方向大致平行於喷孔 之方向。1273986 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a printing apparatus, and more particularly to a photochromic printing apparatus. [Prior Art] At present, the types of printers commonly used can be roughly classified into two types: ink jet printers and camcorder printers. *Generally, the smudged ink printer has a shortcoming in the lack of fineness of the printed image. Although printing with a very small ink droplet can be used to improve the above problem, the printing speed is greatly affected. On the other hand, conventional laser printers are better than inkjet printers in terms of printing speed and accuracy, but they have the disadvantages of complicated structure, large size and high cost. In addition, they are designed and manufactured. It is also more difficult. SUMMARY OF THE INVENTION The present invention provides a photochromic printing device for printing on a recording medium including a photochromic ink, an ink jet mechanism, and a light source. The above-described ink jet mechanism has an orifice in which a photochromic ink is ejected onto the recording medium through an orifice through an ink jet machine. The light source emits a light to the photochromic ink to change the chemical characteristics of the photochromic ink. In a preferred embodiment, the light is applied to the photochromic ink that has landed on the recording medium and developed. In a preferred embodiment, the light is applied to a portion of the photochromic ink on the recording medium to form a text or image on the recording medium. 0535-A21374TWF(N2); F05043; TKLIN 5 1273986 In a preferred embodiment, the light is irradiated to the photochromic ink in the ink jet mechanism, thereby changing the chemical characteristics of the photochromic ink, and then passing through the orifice The aforementioned photochromic ink is ejected onto a recording medium. In a preferred embodiment, the photochromic printing device controls the gray scale of the photochromic ink by controlling the intensity of the light or the output pulse frequency of the light. In a preferred embodiment, the ink jet printing device further includes an image curing device for curing the photochromic ink on the recording medium such that the photochromic ink appears and maintains a specific color. In a preferred embodiment, the curing device is capable of acting on the photochromic ink by means of ultraviolet light, infrared light, heating or chemical coating. In a preferred embodiment, the direction of the light is substantially perpendicular to the orifice. direction. In a preferred embodiment, the direction of the light is substantially parallel to the direction of the orifice.
於一較佳實施例中，前述光源係為一單色或多色雷射 光源。 於一較佳實施例中，前述光源係為一發光二極體。 於一較佳實施例中，前述喷墨機構係為一壓電式或熱 氣泡式喷墨機構。. 本發明同時提供一種光致變色列印方法，用以列印於 一記錄媒體，包括：將一光致變色墨水喷至上述記錄媒體。 照射一光線至記錄媒體上之光致變色墨水，藉以改變該光 0535-A21374TWF(N2)；F05043；TKLIN 6 1273986 致變色墨水之化學特性。 於一較佳實施例中，前述光致變色列印方法更包括： 利用一圖像固化裝置對記錄媒體上之光致變色墨水進行固 化，使其顯現並維持一特定顏色。 本發明同時提供一種光致變色列印系統，用以列印於 一記錄媒體，包括一列印頭喷墨陣列、一光源陣列、一光 源陣列控制電路、一對焦光頭陣列、一光導以及一列印控 ......... - - ......... -........... ............... ……-.......... . ........... 制電路。上述列印頭喷墨陣列係用以將一光致變色墨水喷 射至前述記錄媒體。上述光源陣列控制電路則係用以控制 前述光源陣列。上述對焦光頭陣列連接光源陣列，用以將 光線對焦並照射至前述光致變色墨水，藉以改變該光致變 色墨水之化學特性。上述光導連接光源陣列以及對焦光頭 陣列。上述列印控制電路係用以控制列印頭噴墨陣列以及 對焦光頭陣列。 【實施方式】 第一實施例 首先請參閱第1圖，該圖係表示一光致變色列印裝置 之示意圖。於第1圖中所示之光致變色列印裝置可用以列 印文字或圖像於一記錄媒體Μ(例如一紙張），其主要包括 光致變色墨水D、一喷墨機構10以及一光源30。如第1 圖所示，上述喷墨機構10具有一喷孔20，位於嗔墨機構 10内之光致變色墨水D可經由噴孔20喷出並落於記錄媒 體Μ上（如光致變色墨水D’所示）。由於光致變色墨水D 在某特定頻率的光線照射下會導致其化學特性產生改變，In a preferred embodiment, the light source is a monochromatic or multi-color laser source. In a preferred embodiment, the light source is a light emitting diode. In a preferred embodiment, the ink jet mechanism is a piezoelectric or thermal bubble jet mechanism. The present invention also provides a photochromic printing method for printing on a recording medium, comprising: spraying a photochromic ink onto the recording medium. The photochromic ink is irradiated with a light to the photochromic ink on the recording medium to change the chemical properties of the color-changing ink of 0535-A21374TWF(N2); F05043; TKLIN 6 1273986. In a preferred embodiment, the photochromic printing method further comprises: curing the photochromic ink on the recording medium by an image curing device to visualize and maintain a specific color. The invention also provides a photochromic printing system for printing on a recording medium, comprising a printing head inkjet array, a light source array, a light source array control circuit, a focusing optical head array, a light guide and a column of printing control ......... - - ......... -...................................- .......... ................... Circuitry. The above print head ink jet array is for ejecting a photochromic ink to the aforementioned recording medium. The above light source array control circuit is used to control the aforementioned light source array. The focusing head array is connected to the light source array for focusing and illuminating the photochromic ink to change the chemical characteristics of the photochromic ink. The light guide is coupled to the array of light sources and the array of focusing heads. The above print control circuitry is used to control the printhead inkjet array and the focushead array. [Embodiment] First Embodiment Referring first to Figure 1, there is shown a schematic view of a photochromic printing apparatus. The photochromic printing device shown in FIG. 1 can be used to print characters or images on a recording medium (for example, a sheet of paper), which mainly includes a photochromic ink D, an inkjet mechanism 10, and a light source. 30. As shown in Fig. 1, the ink jet mechanism 10 has an orifice 20 through which the photochromic ink D located in the ink squeezing mechanism 10 can be ejected and dropped on the recording medium (e.g., photochromic ink). D')). Since the photochromic ink D causes a change in its chemical properties when it is irradiated with light of a specific frequency,
0535-Α21374TWF(N2)；F05043；TKLIN 1273986 因此可利用前述光源3G#n線L至記錄媒體]ν[上之0535-Α21374TWF(N2); F05043;TKLIN 1273986 Therefore, the aforementioned light source 3G#n line L can be used to record medium] ν[上之
光致—@ I 士 TV ^ ^ D ，進而變化光致變色墨水D，之透明度 (由透明變成不透明），藉以隱性地呈現相應的文字或圖像 於記錄媒體Μ上。 接著’可透過一圖像固化裝置（未圖示）以紫外線、紅外 線？熱或者化學覆蓋之方式，作用於前述光致變色墨水 D藉一使土錄媒體Μ上之光致變色墨水D，顯現一特定 顏色’同時可使得光致變色墨水D，之物理、化學特性在顯 色後保持穩^，且不會再因光、熱的影響而改變顏色。前 述喷墨機構10可為熱氣泡式或者壓電式喷墨頭，前述光源 30則可採用單色、多色雷射光源或者發光二極體，如此一 來可藉由控制光源3〇的強度或者輸出脈衝頰率，使得墨水 在顯色後呈現出不同之灰階變化。 接著請參閱第2Α圖，其中區域Α表示前述光致變色 墨水D’落在記錄媒體厘上所涵蓋之範圍，區域a，則表 示欲接受光線L照射而顯現顏色的特定部分。再請參閱第 2B圖’由於區域A’中之光致變色墨水D’主要係透過光 線L的照射進而顯現一特定顏色，因此列印精度係根據光 源30在記錄媒體上的照射精度來決定，故相較於傳統的喷 墨印表機可大幅提升列印品質。 特別地是，前述列印方式僅需在喷墨區域A完全涵蓋 欲顯色之區域A’即可，即便有多餘的墨水誤噴到其他區 域亦不會影響列印效果，因此不必設置高精度的喷墨機構 與控制系統，進而可有效地降低製造成本。 0535-A21374TWF(N2)；F05043；TKLIN 8 1273986 #詈妾ίτ參閱第3胃，根據第1圖所示之光致銳"丨印 二水之=; 著利用—光源日5己錄媒體（步驟S3〇i)，接 化學特性發生^ 體上之光致變色墨水並使其 後利用夂网 由透明變化爲不透明等(步驟 墨水顯用定固化裝置使記錄媒體上之光致變色 _，藉以在記^mt8：維持該顏色（步驟 、 呆體上形成一文字或圖像。 以產生=印方法亦可採用不同種類之光致變色墨水，藉 改變光2化。特別地是，在步驟3302中可透過 階深淺輪出脈衝頻率來控制墨水顯色後的灰 此外：二f: 方法不僅可提供一彩色列印功能’ 愛水姑後之灰階變化亦可由光源來加以控制，相較 於傳統的喷墨印表機具有更細緻的列印效果。 接著再請一併參閱第4A、4B圖，於本第4a、4b圖中 所示之光致變色列印裝置包括-噴墨機構10、-光源陣列 (未圖示）、一對焦光頭陣列300以及複數個光導G。如第 4B圖所示，上述對焦光頭陣列3〇〇具有複數個對焦光頭 300 ，且上述噴墨機構10具有複數個喷孔20，分別對應 於月ί述對焦光頭300’ ’其中各個光導G分別連接前述光 源陣列以及對焦光頭陣列300上之每一對焦光頭3〇〇，， 如此一來光源陣列所發出之光線可個別地經由光導〇傳輸 至每一對焦光頭300’ ，並可經過準直、聚焦後對應地照 射至每一喷孔20所噴出之光致變色墨水D，，進而使其在Photoinduced—@ I 士 TV ^ ^ D , which in turn changes the transparency of the photochromic ink D (from transparent to opaque), thereby implicitly presenting the corresponding text or image on the recording medium. Then, through an image curing device (not shown), ultraviolet rays and infrared rays are used. In the form of heat or chemical coating, the photochromic ink D is applied to the photochromic ink D on the soil recording medium to reveal a specific color 'at the same time, and the physical and chemical properties of the photochromic ink D are After the color is developed, it will remain stable and will not change color due to the influence of light or heat. The inkjet mechanism 10 may be a thermal bubble type or a piezoelectric inkjet head, and the light source 30 may be a monochromatic or multi-color laser light source or a light-emitting diode, so that the intensity of the light source 3〇 can be controlled. Or the pulse rate is output so that the ink exhibits different gray-scale changes after color development. Next, referring to Fig. 2, the area Α indicates that the aforementioned photochromic ink D' falls on the range covered by the recording medium, and the area a indicates a specific portion where the light L is irradiated to develop a color. Referring to FIG. 2B, the photochromic ink D' in the region A' is mainly irradiated with the light L to reveal a specific color. Therefore, the printing accuracy is determined according to the illumination accuracy of the light source 30 on the recording medium. Therefore, compared to the traditional inkjet printer, the printing quality can be greatly improved. In particular, the printing method described above only needs to completely cover the area A' of the color to be developed in the ink-jet area A, and even if the excess ink is accidentally sprayed to other areas, the printing effect is not affected, so it is not necessary to set the high-precision. The ink jet mechanism and the control system can effectively reduce the manufacturing cost. 0535-A21374TWF(N2);F05043;TKLIN 8 1273986 #詈妾ίτ Refer to the 3rd stomach, according to the light shown in Figure 1 & 丨 丨 二 二 ; ======================================== Step S3〇i), the photochromic ink on the chemical property is generated and then changed from transparent to opaque by using the ruthenium mesh (step ink is used to fix the photochromism on the recording medium), thereby In the record ^mt8: maintain the color (step, the formation of a text or image on the body. To produce the = printing method can also use different kinds of photochromic ink, by changing the light. In particular, in step 3302 The ash can be controlled by the pulse frequency of the step depth and the depth of the ink. In addition, the second f: method can not only provide a color printing function. The gray scale change of the water can also be controlled by the light source, compared with the traditional The ink jet printer has a more detailed printing effect. Next, please refer to FIGS. 4A and 4B together, and the photochromic printing device shown in the fourth and fourth embodiments includes an inkjet mechanism 10, a light source array (not shown), a focusing head array 300 a plurality of light guides G. As shown in Fig. 4B, the focus head array 3 has a plurality of focus heads 300, and the ink jet mechanism 10 has a plurality of nozzle holes 20 corresponding to the focus head 300' Each of the light guides G is connected to each of the light source arrays and the focusing heads 3 of the focusing head array 300, so that the light emitted by the light source array can be individually transmitted to each of the focusing optical heads 300' via the light guides, and After being collimated and focused, the photochromic ink D ejected to each of the nozzle holes 20 is correspondingly irradiated, thereby
0535-A21374TWF(N2)；F05043；TKLIN 1273986 記錄媒體Μ上顯色並呈現一文字或圖像。需特別説明的 是，該光源陣列也可是單獨光源，此時僅需在光導G與該 單獨光源之間或者光導G與對焦光頭300’之間增設一光調 製器陣列（未圖示），便可達成相同之功效。 接著再請參閱第5圖，於第5圖中所示之光致變色列 印裝置主要包括一喷墨機構10、一光源陣列30’ 、一對焦 光頭陣列300以及一光導G，其中喷墨機構10内具有一喷 孔20。如圖所示，前述喷墨機構10、光源陣列30’ 、光 導G以及對焦光頭陣列3 0 0係透過半導體製造技術而為一 體成形，藉以組成一光學喷墨頭結構，其中光源陣列30’ 係集成於喷墨機構10。如第5圖所示，光源陣列30’係透 過光導G連接對焦光頭陣列300，上述對焦光頭陣列300 在經過準直與聚焦後可發出一光線L至記錄媒體Μ上光致 變色墨水D’並使其顯色。 第6圖為本發明之陣列式光致變色列印系統示意圖。 如圖所示，上述光致變色列印系統主要包括一列印控制電 路701、光源陣列控制電路702、光源陣列703、光導704、 對焦光頭陣列705以及一列印頭喷墨陣列706，其中列印 頭喷墨陣列706具有複數個喷孔(未圖示），且對焦光頭陣 列705具有複數個對焦光頭（未圖示），分別對應於前述喷 孔。如圖所示，前述列印控制電路701分別連接並控制光 源陣列控制電路702以及列印頭喷墨陣列706，其中光源 陣列控制電路702則連接並控制光源陣列703。 由於光源陣列703所發出之光線可經由光導704傳輸 0535-A21374TWF(N2)；F05043；TKLIN 10 1273986 至對焦光頭陣列705中之每一對焦光頭，因此透過前述列 印控制電路701可控制列印頭喷墨陣列706中每一喷孔的 喷墨動作，同時可控制光源陣列703以及每一對焦光頭發 出的光線強度和照射時間，其中前述列印頭喷墨陣列706 以及對焦光頭陣列705可組成一光學喷墨頭707，用以將 光致變色墨水顯色於一記錄媒體上，進而呈現一文字或圖 像。 第7圖表示一單光源式光致變色列印系統，其中光源 803係為一單獨光源，光線可經由光導/分束器804傳輸至 一光調製器陣列802,接著再傳輸至對焦光頭陣列805。另 一方面，列印控制電路801係同時連接並控制前述光調製 器陣列802以及一列印頭喷墨陣列806，如此一來可藉由 列印控制電路801控制列印頭喷墨陣列806中每一喷孔的 喷墨動作以及對焦光頭陣列805中每一對焦光頭之光線強 度與照射時間，其中前述列印頭喷墨陣列806以及對焦光 頭陣列805可組成一光學噴墨頭807，用以將光致變色墨 水顯色於一記錄媒體上，進而呈現一文字或圖像。 第二實施例 本實施例與第一實施例的主要區別在於，本實施例係 先透過光源照射以使光致變色墨水化學特性發生改變，繼 而再藉喷墨機構喷射該已改變化摩特性之光致變色墨水至 記錄媒體。以下描述中，僅詳述本實施例不同於第一實施 例之處，相同處則不再贅述。 第8圖為本實施例之光致變色列印裝置示意圖。如圖 0535-A21374TWF(N2)；F05043；TKLIN 11 1273986 所示，光致變色墨水D在喷射至記錄媒體Μ之前即受到光 源30所發出之光線L照射而先行改變其化學特性，然後再 將其經由喷墨機構10之喷孔20喷出至記錄媒體Μ上（如 光致變色墨水D’所示）。如第8圖所示，前述光源30係 由喷墨機構10之一侧發射光線L至喷孔20内之光致變色 墨水D，其中光線L之方向大致垂直於喷孔20，然而光線 L之方向亦可做其他變更，並不以此為限。 同樣地，爲了確保記錄媒體Μ上之光致變色墨水D’ 可保持穩定而不再產生變化，另可透過一圖像固化裝置（未 圖示）以紫外線、紅外線、加熱或者化學覆蓋之方式作用於 前述光致變色墨水D’，藉以使其顯現並維持一特定顏色。 接著再請參閱第9Α圖，於第9Α圖中之光源30係由 喷墨機構10之一侧邊發射一光線L，上述光線L依序經由 光導G傳輸並穿過喷墨機構10上之一視窗W，進而照射 於喷孔20中之光致變色墨水D，其中光線L之方向大致垂 直於前述喷孔20，於本實施例中，該視窗W係為透明視 窗。由於光致變色墨水D在經過光線L照射後可顯現一特 定之顏色，因此可經由喷孔20喷出至一記錄媒體Μ上進 而形成一文字或圖案。 再請參閱第9Β圖，於第9Β圖中之光源30係採取由 上往下的方式發射一光線L，並依序經過光導G以及喷墨 機構10上之一視窗W進而照射至喷孔20中之光致變色墨 水D，藉以使其顯現一特定之顏色。其中，前述光線L之 方向係大致平行於光致變色墨水D由喷孔20射出之方 0535-A21374TWF(N2)；F05043；TKLIN 12 1273986 向。需特別説明的是，除了如第9A、9B圖所示之結構外， 前述噴墨機構10、喷孔20、光源30以及視窗W亦可透過 其他不同的方式相互結合，進而組成一光學喷墨頭結構。 此外，如第9A、9B圖所示之光源30係集成於喷墨機構10, 其可為單光源或者光源陣列。 於實際應用中，採取預先照射光線至光致變色墨水後 再喷射至記錄媒體之原理者，其列印裝置結構除了可採取 第9A、9B圖所示之光源集成式結構外，亦可採用光源分 離式結構，亦即光源與喷墨機構並非結合為一體，其中上 述光源可採用單光源或者光源陣列。 接著請參閱第10圖，其係本實施例之光致變色列印方 法示意圖。如圖所示，首先係供一光致變色墨水（步驟 S501)，接著利用一光源照射光致變色墨水使其化學特性 發生改變，比如由透明變化爲不透明等（步驟S502)，然後 將光致變色墨水喷至一記錄媒體（步驟S503)，最後再利用 一圖像固化裝置使記錄媒體上之光致顯現一特定顏色並固 化之，亦即維持該特定顏色（步驟S504)，藉以在記錄媒體 上形成一文字或圖像。 綜上所述，本發明提供一種光致變色列印裝置，藉由 發射一光線使光致變色墨水顯現一特定之顏色，進而可在 一記錄媒體上形成文字或圖像。由於列印精度係取決予光 線之照射精度，因此相較於傳統的喷墨印表機可大幅提升 其列印品質。 0535-A21374TWF(N2)；F05043；TKLIN 13 1273986 【圖式簡單說明】 第1圖係表示本發明之第一實施例中之光致變色列印 裝置示意圖； 第2A圖係表示光致變色墨水落在記錄媒體上之一區 域A之不意圖， 第2B圖係表示區域A’之光致變色墨水受到光線照射 後之不意圖， 第3圖係表示本發明第一實施例中之光致變色列印方 法之不意圖， 第4A、4B圖係表示第一實施例中之光源陣列式光致 變色列印裝置示意圖； 第5圖係表示第一實施例中之光源集成式光致變色列 印裝置示意圖； 第6圖係表示第一實施例中之陣列式光致變色列印系 統不意圖； 第7圖係表示第一實施例中之單光源式光致變色列印 系統示意圖； 第8圖係表示本發明之第二實施例中之光致變色列印 裝置示意圖； 第9A圖係表示本發明之第二實施例中之光源集成式 光致變色列印裝置示意圖； 第9B圖係表示第二實施例中另一光源集成式光致變 色列印裝置示意圖；以及 第10圖係表示第二實施例中之光致變色列印方法示 0535-A21374TWF(N2);F05043;TKLIN 14 1273986 意圖。 、 【主要元件符號說明】 10〜喷墨機構 20〜喷孔 30〜光源 30’〜光源陣列 300〜對焦光頭陣列 φ 300’〜對焦光頭 G〜光導 701〜列印控制電路 702〜光源陣列控制電路 703〜光源陣列 704〜光導 705〜對焦光頭陣列 706〜列印頭喷墨陣列 φ 7〇7〜光學喷墨頭 801〜列印控制電路 802〜光調製器陣列 803〜光源 804〜光導/分束 805〜對焦光頭陣列 806〜列印頭喷墨陣列 807〜光學喷墨頭 0535-A21374TWF(N2);F05043;TKLIN 15 1273986 A、A ’〜區域 D、D’〜光致變色墨水 L〜光線 M〜記錄媒體 W〜視窗0535-A21374TWF(N2); F05043; TKLIN 1273986 The recording medium is colored and presents a text or image. It should be noted that the light source array may also be a separate light source. In this case, only a light modulator array (not shown) needs to be added between the light guide G and the separate light source or between the light guide G and the focusing head 300 ′. The same effect can be achieved. Referring to FIG. 5 again, the photochromic printing device shown in FIG. 5 mainly includes an inkjet mechanism 10, a light source array 30', a focusing head array 300, and a light guide G, wherein the inkjet mechanism There is a spray hole 20 in the interior 10. As shown, the inkjet mechanism 10, the light source array 30', the light guide G, and the focusing head array 300 are integrally formed by semiconductor manufacturing techniques to form an optical inkjet head structure in which the light source array 30' is Integrated in the inkjet mechanism 10. As shown in FIG. 5, the light source array 30' is connected to the focusing head array 300 through the light guide G. After the collimating and focusing, the focusing head array 300 emits a light L to the recording medium and the photochromic ink D'. Make it color. Figure 6 is a schematic view of an array type photochromic printing system of the present invention. As shown, the photochromic printing system mainly includes a print control circuit 701, a light source array control circuit 702, a light source array 703, a light guide 704, a focus head array 705, and a print head ink jet array 706, wherein the print head The inkjet array 706 has a plurality of orifices (not shown), and the focusing array 705 has a plurality of focusing heads (not shown) corresponding to the aforementioned orifices. As shown, the print control circuit 701 is coupled to and controls the light source array control circuit 702 and the printhead ink jet array 706, respectively, wherein the light source array control circuit 702 connects and controls the light source array 703. Since the light emitted by the light source array 703 can transmit the 0535-A21374TWF (N2); F05043; TKLIN 10 1273986 to each of the focusing head arrays 705 via the light guide 704, the print head can be controlled by the aforementioned print control circuit 701. The inkjet action of each of the inkjet arrays 706 can simultaneously control the light source array 703 and the intensity of the light and the illumination time of each of the focuslights, wherein the printhead inkjet array 706 and the focushead array 705 can be combined into one. The optical inkjet head 707 is configured to develop a photochromic ink on a recording medium to present a character or an image. Figure 7 shows a single light source photochromic printing system in which light source 803 is a separate light source that can be transmitted via light guide/beam splitter 804 to a light modulator array 802 and then to focushead array 805. . On the other hand, the print control circuit 801 simultaneously connects and controls the aforementioned light modulator array 802 and a column of inkjet arrays 806, so that each of the printhead inkjet arrays 806 can be controlled by the print control circuit 801. The ink jetting action of an orifice and the light intensity and irradiation time of each focusing head in the focusing array 805, wherein the printhead inkjet array 806 and the focusing head array 805 can form an optical inkjet head 807 for The photochromic ink is developed on a recording medium to present a text or image. Second Embodiment The main difference between the present embodiment and the first embodiment is that the first embodiment is first irradiated with a light source to change the chemical characteristics of the photochromic ink, and then the inkjet mechanism is used to eject the changed chemical characteristics. Photochromic ink to the recording medium. In the following description, only the embodiment is different from the first embodiment, and the same portions will not be described again. Figure 8 is a schematic view of the photochromic printing device of the present embodiment. As shown in Fig. 0535-A21374TWF(N2); F05043; TKLIN 11 1273986, the photochromic ink D is irradiated with the light L emitted from the light source 30 before being ejected onto the recording medium, and its chemical characteristics are changed first, and then The ejection orifice 20 of the ink jet mechanism 10 is ejected onto the recording medium cartridge (as shown by the photochromic ink D'). As shown in FIG. 8, the light source 30 emits light L from one side of the ink jet mechanism 10 to the photochromic ink D in the spray hole 20, wherein the direction of the light L is substantially perpendicular to the spray hole 20, but the light L Other changes can be made to the direction, not limited to this. Similarly, in order to ensure that the photochromic ink D' on the recording medium is stable and no longer changes, it can be applied by ultraviolet light, infrared light, heating or chemical coating through an image curing device (not shown). In the foregoing photochromic ink D', it is made to appear and maintain a specific color. Referring to FIG. 9 again, the light source 30 in FIG. 9 emits a light L from one side of the ink jet mechanism 10, and the light L is sequentially transmitted through the light guide G and passes through one of the inkjet mechanisms 10. The window W is further irradiated to the photochromic ink D in the nozzle hole 20, wherein the direction of the light beam L is substantially perpendicular to the nozzle hole 20. In the embodiment, the window W is a transparent window. Since the photochromic ink D can be developed to a specific color after being irradiated with the light L, it can be ejected through a nozzle hole 20 onto a recording medium to form a character or pattern. Referring to FIG. 9 again, the light source 30 in FIG. 9 emits a light L from top to bottom, and sequentially passes through the light guide G and a window W on the inkjet mechanism 10 to illuminate the nozzle hole 20. The photochromic ink D is used to make it appear a specific color. Wherein, the direction of the light ray L is substantially parallel to the direction in which the photochromic ink D is emitted from the injection hole 20, 0535-A21374TWF (N2); F05043; TKLIN 12 1273986. It should be particularly noted that, in addition to the structures shown in FIGS. 9A and 9B, the ink jet mechanism 10, the injection holes 20, the light source 30, and the window W may be combined with each other in other different manners to form an optical inkjet. Head structure. Further, the light source 30 as shown in Figs. 9A and 9B is integrated in the ink jet mechanism 10, which may be a single light source or an array of light sources. In practical applications, the principle of pre-illuminating the light to the photochromic ink and then ejecting it to the recording medium, in addition to the light source integrated structure shown in Figures 9A and 9B, the light source may also be used. The separate structure, that is, the light source and the ink jet mechanism are not integrated, wherein the light source may be a single light source or an array of light sources. Next, please refer to Fig. 10, which is a schematic diagram of the photochromic printing method of the present embodiment. As shown in the figure, a photochromic ink is first supplied (step S501), and then the photochromic ink is irradiated with a light source to change its chemical characteristics, such as changing from transparent to opaque (step S502), and then photo-induced. The color changing ink is sprayed onto a recording medium (step S503), and finally an image curing device is used to cause the light on the recording medium to develop a specific color and solidify, that is, to maintain the specific color (step S504), thereby recording the medium. Form a text or image on it. In summary, the present invention provides a photochromic printing device which can form a text or image on a recording medium by emitting a light to cause the photochromic ink to develop a specific color. Since the printing accuracy is dependent on the accuracy of the illumination of the light, the printing quality can be greatly improved compared to the conventional inkjet printer. 0535-A21374TWF(N2); F05043; TKLIN 13 1273986 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a photochromic printing device in a first embodiment of the present invention; FIG. 2A is a photochromic ink falling. In the case where one area A on the recording medium is not intended, FIG. 2B shows the intention that the photochromic ink of the area A' is irradiated with light, and FIG. 3 shows the photochromic column in the first embodiment of the present invention. 4A, 4B is a schematic diagram showing a light source array type photochromic printing apparatus in the first embodiment; and FIG. 5 is a light source integrated type photochromic printing apparatus in the first embodiment. Figure 6 is a schematic view showing an array type photochromic printing system in the first embodiment; Figure 7 is a schematic view showing a single-source photochromic printing system in the first embodiment; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 9A is a schematic view showing a light source integrated photochromic printing device in a second embodiment of the present invention; FIG. 9B is a second embodiment; In the embodiment A schematic diagram of another light source integrated photochromic printing device; and Fig. 10 shows a photochromic printing method in the second embodiment, 0535-A21374TWF(N2); F05043; TKLIN 14 1273986. [Main component symbol description] 10 to inkjet mechanism 20 to orifice 30 to light source 30' to light source array 300 to focusing head array φ 300' to focusing head G to light guide 701 to printing control circuit 702 to light source array control circuit 703~light source array 704~light guide 705~focusing head array 706~printing head inkjet array φ7〇7~optical inkjet head 801~printing control circuit 802~light modulator array 803~light source 804~lightguide/beam splitting 805~focusing head array 806~printing head inkjet array 807~optical inkjet head 0535-A21374TWF(N2); F05043;TKLIN 15 1273986 A, A '~region D, D'~photochromic ink L~light M ~ Recording Media W ~ Window
0535-A21374TWF(N2)；F05043；TKLIN 160535-A21374TWF(N2); F05043;TKLIN 16