JP6905222B2 - Visualization device - Google Patents

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JP6905222B2
JP6905222B2 JP2019133472A JP2019133472A JP6905222B2 JP 6905222 B2 JP6905222 B2 JP 6905222B2 JP 2019133472 A JP2019133472 A JP 2019133472A JP 2019133472 A JP2019133472 A JP 2019133472A JP 6905222 B2 JP6905222 B2 JP 6905222B2
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visualization device
invisible
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printing
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博繁 山本
博繁 山本
板谷 賢二
賢二 板谷
正浩 倉西
正浩 倉西
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Description

本発明は、不可視インクを用いて印刷された印刷面における不可視印刷部を可視化させるための可視化装置に関する。 The present invention relates to invisible printing portion in the printed print surface using invisible ink visible KaSo location for visible.

従来より、採点作業の時間短縮を目的として、通常の印刷で設問が印刷され、解答記載箇所が設けられるとともに、不可視インクを用いて正解が印刷された印刷シートが知られている(特許文献1)。かかる印刷シートは、採点時にハンディタイプの紫外線照射器を持って印刷シートに紫外線を照射して正解(不可視印刷部)を可視化し、この可視化された正解と見比べながら解答者の解答を採点するというものである。 Conventionally, for the purpose of shortening the scoring work time, a printing sheet in which a question is printed by normal printing, an answer description portion is provided, and a correct answer is printed using invisible ink has been known (Patent Document 1). ). At the time of scoring, such a print sheet has a handy type ultraviolet irradiator and irradiates the print sheet with ultraviolet rays to visualize the correct answer (invisible printing part), and grades the answer of the answerer while comparing with the visualized correct answer. It is a thing.

また、ハンディタイプであれば、片手が塞がって採点作業の作業効率が悪くなるため、特許文献1は、内部に紫外線を照射する光源を備え、印刷シートを置くことができる紫外線透過性透明板を上面に有する箱型の紫外線照射器も開示している。 Further, if it is a handy type, one hand is blocked and the work efficiency of the scoring work is deteriorated. Therefore, Patent Document 1 provides an ultraviolet-transmissive transparent plate provided with a light source that irradiates ultraviolet rays inside and on which a printing sheet can be placed. A box-shaped ultraviolet irradiator having an upper surface is also disclosed.

特開平11−119635号公報Japanese Unexamined Patent Publication No. 11-119635

しかしながら、箱型の紫外線照射器は、紫外線が採点者の目に直接的に入射する構造であるため、安全上好ましくない。近年は、LED光源の普及に伴い、光の安全性への関心が高まっており、光の照射による目や皮膚への影響を評価する方法として、IEC62471(JIS C7550)が規格化されているところであり、この種の製品において、十分に配慮すべき事項となってきている。 However, the box-type ultraviolet irradiator is not preferable in terms of safety because it has a structure in which ultraviolet rays are directly incident on the eyes of the grader. In recent years, with the spread of LED light sources, interest in light safety has increased, and IEC62471 (JIS C7550) has been standardized as a method for evaluating the effects of light irradiation on the eyes and skin. There is, and it has become a matter to be fully considered in this kind of product.

そこで、本発明は、かかる事情に鑑みてなされたもので、安全性に配慮した可視化装置を提供することを課題とする。 The present invention has been made in view of such circumstances, and an object thereof is to provide a visible KaSo location in consideration safety.

本発明に係る可視化装置は、
不可視インクを用いて印刷された印刷面における不可視印刷部を可視化させるための可視化装置であって、
不可視印刷部を可視化するための特定の波長の光を照射するヘッド部と、
ヘッド部を、印刷面に対して上方から光が照射されるように支持する支持部とを備える
可視化装置である。
The visualization device according to the present invention is
A visualization device for visualizing an invisible printed portion on a printed surface printed with invisible ink.
A head unit that irradiates light of a specific wavelength to visualize the invisible printing unit,
It is a visualization device including a support portion that supports the head portion so that light is emitted from above with respect to the printing surface.

ここで、本発明に係る可視化装置において、
光は、ピーク波長が375nm以上410nm以下の光である
Here, in the visualization device according to the present invention ,
The light has a peak wavelength of 375 nm or more and 410 nm or less .

また、本発明に係る可視化装置において、
印刷面における光の照射強度は、289μW/cm以上496μW/cm以下となるように設定される
Further, in the visualization device according to the present invention ,
The irradiation intensity of light on the printing surface is set to be 289 μW / cm 2 or more and 496 μW / cm 2 or less.

また、本発明に係る可視化装置の別の態様として、
ヘッド部は、側部が不透明でかつ下方が開放された筒状のセード部を備え、
セード部は、不可視印刷部全体又は不可視印刷部全体の多くの部分を同時に照射する広角の照射領域を画定する
との構成を採用することができる。
Further, as another aspect of the visualization device according to the present invention,
The head portion has a tubular shade portion with an opaque side portion and an open bottom.
The shade portion can adopt a configuration in which a wide-angle irradiation region that simultaneously irradiates the entire invisible printing portion or a large portion of the entire invisible printing portion is defined.

このように、本発明に係る可視化装置は、安全性に配慮したものであり、極めて有用である。 Thus, the visible KaSo location according to the present invention is obtained by considering the safety, it is extremely useful.

図1は、本発明の一実施形態に係る可視化装置の左側面図である。FIG. 1 is a left side view of a visualization device according to an embodiment of the present invention. 図2は、可視化装置の正面図である。FIG. 2 is a front view of the visualization device. 図3は、可視化装置の外観斜視図である。FIG. 3 is an external perspective view of the visualization device. 図4(a)は、可視化装置のヘッド部の左側面図(右側面図も同様)であり、図4(b)は、ヘッド部の正面図である。FIG. 4A is a left side view of the head portion of the visualization device (the same applies to the right side view), and FIG. 4B is a front view of the head portion. 図5(a)は、ヘッド部の下面図であり、図5(b)は、ヘッド部の上面図である。FIG. 5A is a bottom view of the head portion, and FIG. 5B is a top view of the head portion. 図6(a)は、ヘッド部の一部断面を含む左側面図であり、図6(b)は、ヘッド部の一部断面を含む正面図である。FIG. 6A is a left side view including a partial cross section of the head portion, and FIG. 6B is a front view including a partial cross section of the head portion. 図7(a)は、不可視インクを用いて正解が印刷された問題用紙の表面を示す図であり、図7(b)は、問題用紙の裏面を示す図である。FIG. 7 (a) is a diagram showing the front surface of the question paper on which the correct answer is printed using invisible ink, and FIG. 7 (b) is a diagram showing the back surface of the question paper. 図8(a)は、問題用紙の表面の解答記載箇所に解答者が解答を書き込んだ状態を示す図であり、図8(b)は、問題用紙の裏面の解答記載箇所に解答者が解答を書き込んだ状態を示す図である。FIG. 8A is a diagram showing a state in which the answerer writes the answer in the answer description part on the front surface of the question sheet, and FIG. 8B is a diagram showing the answer by the answerer in the answer description part on the back surface of the question sheet. It is a figure which shows the state which wrote. 図9(a)は、問題用紙の表面に可視化装置の光を照射して問題用紙の表面に印刷された正解(不可視印刷部)を可視化した状態を示す図であり、図9(b)は、問題用紙の裏面に可視化装置の光を照射して問題用紙の裏面に印刷された正解(不可視印刷部)を可視化した状態を示す図である。FIG. 9A is a diagram showing a state in which the surface of the question paper is irradiated with the light of the visualization device to visualize the correct answer (invisible printing unit) printed on the surface of the question paper, and FIG. 9B is a diagram. It is a figure which shows the state which visualized the correct answer (invisible printing part) printed on the back surface of the question paper by irradiating the back surface of the question paper with the light of the visualization apparatus. 図10(a)は、問題用紙の表面に可視化装置の光を照射しても問題用紙の表面に印刷された正解(不可視印刷部)が可視化されない状態を示す図であり、図10(b)は、問題用紙の表面に可視化装置の光を照射することで問題用紙の裏面に印刷された正解(不可視印刷部)までが可視化されて問題用紙の表面から見えてしまう状態を示す図である。FIG. 10A is a diagram showing a state in which the correct answer (invisible printing portion) printed on the surface of the question paper is not visualized even if the surface of the question paper is irradiated with the light of the visualization device, and FIG. 10B is a diagram. Is a diagram showing a state in which the correct answer (invisible printing portion) printed on the back surface of the question paper is visualized and can be seen from the front surface of the question paper by irradiating the front surface of the question paper with the light of the visualization device. 図11(a)は、「可視化された不可視印刷部の見やすさ」に関する光の各波長の評価結果を示すグラフであり、図11(b)は、「不可視印刷部の裏写りの程度」に関する光の各波長の評価結果を示すグラフであり、図11(c)は、「採点作業の疲れ具合」に関する光の各波長の評価結果を示すグラフである。FIG. 11 (a) is a graph showing the evaluation results of each wavelength of light regarding “easiness of viewing the visualized invisible printing portion”, and FIG. 11 (b) relates to “degree of show-through of the invisible printing portion”. It is a graph which shows the evaluation result of each wavelength of light, and FIG. 11C is a graph which shows the evaluation result of each wavelength of light concerning "the degree of fatigue of a scoring work". 図12(a)は、「可視化された不可視印刷部の見やすさ」に関する光の各照射強度の評価結果を示すグラフであり、図12(b)は、「不可視印刷部の裏写りの程度」に関する光の各照射強度の評価結果を示すグラフであり、図12(c)は、「採点作業の疲れ具合」に関する光の各照射強度の評価結果を示すグラフである。FIG. 12 (a) is a graph showing the evaluation results of each irradiation intensity of light regarding "easiness to see the visualized invisible printed portion", and FIG. 12 (b) is "degree of show-through of the invisible printed portion". It is a graph which shows the evaluation result of each irradiation intensity of light with respect to, and FIG. 12C is a graph which shows the evaluation result of each irradiation intensity of light concerning "the degree of tiredness of a scoring work". 図13(a)は、光の各波長の総合評価結果を示すグラフであり、図13(b)は、光の各照射強度の総合評価結果を示すグラフである。FIG. 13A is a graph showing the comprehensive evaluation result of each wavelength of light, and FIG. 13B is a graph showing the comprehensive evaluation result of each irradiation intensity of light. 図14は、他実施形態に係る可視化装置の外観斜視図である。FIG. 14 is an external perspective view of the visualization device according to another embodiment. 図15(a)は、他実施形態に係る可視化装置のヘッド部の左側面図(右側面図も同様)であり、図15(b)は、ヘッド部の下面図である。FIG. 15A is a left side view of the head portion of the visualization device according to another embodiment (the same applies to the right side view), and FIG. 15B is a bottom view of the head portion. 図16(a)は、別の種類の問題用紙の表面に可視化装置の光を照射して問題用紙の表面に印刷された正解(不可視印刷部)を可視化した状態を示す図であり、図16(b)は、問題用紙の裏面に可視化装置の光を照射して問題用紙の裏面に印刷された正解(不可視印刷部)を可視化した状態を示す図である。FIG. 16A is a diagram showing a state in which the correct answer (invisible printing portion) printed on the surface of the question paper is visualized by irradiating the surface of another type of question paper with the light of the visualization device. FIG. (B) is a diagram showing a state in which the correct answer (invisible printing unit) printed on the back surface of the question paper is visualized by irradiating the back surface of the question paper with the light of the visualization device.

以下、本発明に係る可視化装置の一実施形態について、図1ないし図6を参酌して説明する。 Hereinafter, an embodiment of the visualization device according to the present invention will be described with reference to FIGS. 1 to 6.

図1ないし図3に示す如く、本実施形態に係る可視化装置1は、スタンド型(卓上型)の器具であり、ベース部2と、ベース部2に取り付けられ、可撓性を有するアーム部3と、LED光源45が配置され、アーム部3に支持されるヘッド部4とを備える。本実施形態においては、ベース部2及びアーム部3がヘッド部4の支持部に相当する。 As shown in FIGS. 1 to 3, the visualization device 1 according to the present embodiment is a stand type (desktop type) instrument, and is attached to the base portion 2 and the base portion 2 and has a flexible arm portion 3. And a head portion 4 in which the LED light source 45 is arranged and supported by the arm portion 3. In the present embodiment, the base portion 2 and the arm portion 3 correspond to the support portion of the head portion 4.

ベース部2は、机やテーブル等に載置される部分(台座部)で、その筐体内に電源回路(図示しない)を内蔵する。そして、ベース部2には、電源スイッチ20が設けられるとともに、先端に電源プラグ21を有する電源コード22が延伸している。電源コード22を介して電源の供給を受けた状態で電源スイッチ20をON操作すれば、LED光源45が発光するようになっている。 The base portion 2 is a portion (pedestal portion) that is placed on a desk, table, or the like, and has a power supply circuit (not shown) built in the housing. A power switch 20 is provided on the base portion 2, and a power cord 22 having a power plug 21 at the tip thereof is extended. If the power switch 20 is turned on while the power is supplied via the power cord 22, the LED light source 45 emits light.

図4ないし図6に示す如く、ヘッド部4は、その筐体40内にLED光源45の点灯回路(図示しない)を内蔵する。ヘッド部4の筐体40は、上面視で略矩形状を有し、上筐体41と下筐体42とで構成される。下筐体42は、開口43を有し、開口43には、光拡散板44を介在させて、LED光源45が配置される。なお、LED光源45は、基板46に固定された状態で配置される。 As shown in FIGS. 4 to 6, the head portion 4 includes a lighting circuit (not shown) of the LED light source 45 in the housing 40 thereof. The housing 40 of the head portion 4 has a substantially rectangular shape when viewed from above, and is composed of an upper housing 41 and a lower housing 42. The lower housing 42 has an opening 43, and the LED light source 45 is arranged in the opening 43 with the light diffusing plate 44 interposed therebetween. The LED light source 45 is arranged in a state of being fixed to the substrate 46.

下筐体42は、開口43を囲うようにしてセード部47を備える。セード部47は、側部が不透明(略不透明の場合を含む)であって、下端が開放された筒状(本実施形態においては、角筒状)であり、机上におけるLED光源45の光の照射領域を画定する。セード部47は、下筐体42と一体に設けられ又は下筐体42と別体に設けられるが下筐体42に取り付けられる外枠48と、外枠48の内面全面に配置される反射板49とで構成される。ただし、外枠48の内面が相応の反射特性を有する場合は、反射板49は必ずしも必要ではない。 The lower housing 42 includes a shade portion 47 so as to surround the opening 43. The shade portion 47 has a tubular shape (in the present embodiment, a square tubular shape) having an opaque side portion (including a case where it is substantially opaque) and an open lower end, and the light of the LED light source 45 on the desk. Define the irradiation area. The shade portion 47 is provided integrally with the lower housing 42 or is provided separately from the lower housing 42, but is attached to the lower housing 42 and has an outer frame 48 and a reflector arranged on the entire inner surface of the outer frame 48. It is composed of 49. However, if the inner surface of the outer frame 48 has appropriate reflection characteristics, the reflector 49 is not always necessary.

LED光源45は、不可視インク(インビジブルインク、たとえば、紫外線照射によって蛍光発色する蛍光インク)を用いて印刷された印刷シートの印刷面における不可視印刷部を可視化させるために、紫外線LED(UV−LED)が用いられる。 The LED light source 45 is an ultraviolet LED (UV-LED) in order to visualize an invisible printed portion on a printing surface of a printing sheet printed using invisible ink (invisible ink, for example, fluorescent ink that develops fluorescent color by irradiation with ultraviolet rays). Is used.

本実施形態に係る可視化装置1は以上の構成からなり、次に、この可視化装置1を用いた採点システムについて、図7ないし図10を参酌して説明する。 The visualization device 1 according to the present embodiment has the above configuration. Next, a scoring system using the visualization device 1 will be described with reference to FIGS. 7 to 10.

本実施形態に係る採点システムは、概略を説明すると、解答記載箇所の近傍に不可視インクを用いて正解が印刷された解答用紙を用いて解答者に解答してもらい、採点時に解答用紙に可視化装置1の光を照射して正解(不可視印刷部)を可視化し、この可視化された正解と見比べながら解答者が解答記載箇所に記載した解答を採点するというものであり、採点者が解答者の解答を正確かつ効率的に採点することを可能とするシステムである。 To explain the outline of the scoring system according to the present embodiment, the answerer is asked to answer using an answer sheet on which the correct answer is printed using invisible ink in the vicinity of the answer description location, and a visualization device is displayed on the answer sheet at the time of scoring. The correct answer (invisible printing part) is visualized by irradiating the light of 1, and the answerer scores the answer described in the answer description part while comparing it with the visualized correct answer, and the grader scores the answer of the answerer. It is a system that enables accurate and efficient scoring.

図7は、通常の印刷で表面5a及び裏面5bのそれぞれに複数の設問(通常印刷部)50が印刷された問題用紙5である。この問題用紙5は、各設問50の右横に解答を書き込む解答用紙を兼ねている。本実施形態においては、問題用紙5の表面5a(図7(a))に5問の設問50が印刷され、裏面5b(図7(b))に6問の設問50が印刷されている。 FIG. 7 is a question paper 5 on which a plurality of questions (normal printing unit) 50 are printed on each of the front surface 5a and the back surface 5b by normal printing. This question sheet 5 also serves as an answer sheet for writing the answer on the right side of each question 50. In the present embodiment, the question 50 of 5 questions is printed on the front surface 5a (FIG. 7 (a)) of the question paper 5, and the question 50 of 6 questions is printed on the back surface 5b (FIG. 7 (b)).

また、当然に通常の照明環境下では見えないが、問題用紙5の解答記載箇所の近傍には、不可視インクを用いて正解が印刷されている。そのため、解答者は正解(不可視印刷部)を見ることはできない。解答者は、学校や学習塾等の教育機関における学習として、図8に示す如く、各設問50を解いて解答記載箇所に解答51を書き込む。 In addition, although it is not visible under normal lighting environment, the correct answer is printed using invisible ink in the vicinity of the answer description portion of the question paper 5. Therefore, the answerer cannot see the correct answer (invisible printing section). As shown in FIG. 8, the answerer solves each question 50 and writes the answer 51 in the answer description place as learning in an educational institution such as a school or a cram school.

採点者は、各解答者から集めた複数の問題用紙5を採点するのであるが、このとき、可視化装置1の電源スイッチ20をONにし、問題用紙5の不可視印刷部全体に上方から可視化装置1の光が照射されるよう、可視化装置1の配置やヘッド部4の向き、角度等の各調整要素を調整する。 The grader grades a plurality of question sheets 5 collected from each answerer. At this time, the power switch 20 of the visualization device 1 is turned on, and the entire invisible printing section of the question sheet 5 is visualized from above. Each adjustment element such as the arrangement of the visualization device 1 and the orientation and angle of the head portion 4 is adjusted so that the light of the above is emitted.

すると、図9に示す如く、可視化装置1の光の照射領域52内において、正解(不可視印刷部)53が可視化され、解答者が書き込んだ解答51に近接して正解53が表示される(本実施形態においては、緑色に発色)。そこで、採点者は、この可視化された正解53と見比べながら解答者の解答51を採点(答え合わせ)する。これを問題用紙5の表面5a(図9(a))及び裏面5b(図9(b))のそれぞれに対して行い、また、各問題用紙5に対して行う。 Then, as shown in FIG. 9, the correct answer (invisible printing unit) 53 is visualized in the light irradiation area 52 of the visualization device 1, and the correct answer 53 is displayed in close proximity to the answer 51 written by the answerer (book). In the embodiment, it develops a green color). Therefore, the grader scores (matches the answers) the answerer's answer 51 while comparing it with the visualized correct answer 53. This is done for each of the front surface 5a (FIG. 9 (a)) and the back surface 5b (FIG. 9 (b)) of the question paper 5, and also for each question paper 5.

このように、本実施形態に係る採点システムによれば、採点者が正解を覚えておくとか、別紙の正解表と見比べながら採点作業を行うといった煩雑さが解消され、採点作業が非常に楽になる。これは、設問数が多いとか、解答者が多いために問題用紙5の採点枚数が多くなるほど顕著な効果となる。また、解答者の解答51と正解53が近接して常に採点者の同じ視界に入るため、採点ミスを防止することができる。したがって、本実施形態に係る採点システムによれば、採点者が解答者の解答を正確かつ効率的に採点することができる。 In this way, according to the scoring system according to the present embodiment, the complexity of having the grader remember the correct answer or performing the scoring work while comparing it with the correct answer table on the attached sheet is eliminated, and the scoring work becomes very easy. .. This becomes more remarkable as the number of scoring sheets on the question sheet 5 increases because the number of questions is large or the number of answerers is large. Further, since the answerer 51 and the correct answer 53 are close to each other and always in the same field of view of the grader, it is possible to prevent a scoring error. Therefore, according to the scoring system according to the present embodiment, the grader can accurately and efficiently score the answer of the answerer.

しかし、光による人体への影響を排除するために、光の波長はできるだけ長く、光の照射強度はできるだけ低くすべきである。ただし、可視化装置1の光の波長が適切でないとか、光の照射強度が弱いと、可視化装置1の光を照射しても問題用紙5に印刷された正解(不可視印刷部)53が見えづらく、極端な場合は、図10(a)に示す如く、可視化されない事態が生じ得る。逆に、可視化装置1の光の波長が適切でないとか、光の照射強度が強いと、極端な場合は、図10(b)に示す如く、可視化装置1の光を照射することで問題用紙5の反対面に印刷された正解(不可視印刷部)54までが可視化されて問題用紙の表面から見えてしまう事態(いわゆる裏写り)が生じ得る。裏写りが生じると、問題用紙5が見にくくなり、最悪の場合は、反対面側の正解(不可視印刷部)54が解答者が書き込んだ解答51や正面側の正解(不可視印刷部)53と重なって、読めなくなり、採点ミスが生じやすくなる。 However, in order to eliminate the influence of light on the human body, the wavelength of light should be as long as possible and the irradiation intensity of light should be as low as possible. However, if the wavelength of the light of the visualization device 1 is not appropriate or the irradiation intensity of the light is weak, it is difficult to see the correct answer (invisible printing section) 53 printed on the question paper 5 even if the light of the visualization device 1 is irradiated. In extreme cases, as shown in FIG. 10A, a situation that is not visualized may occur. On the contrary, if the wavelength of the light of the visualization device 1 is not appropriate or the irradiation intensity of the light is strong, in an extreme case, as shown in FIG. 10B, the problem paper 5 is obtained by irradiating the light of the visualization device 1. A situation (so-called show-through) may occur in which the correct answer (invisible printing section) 54 printed on the opposite side of the paper is visualized and can be seen from the surface of the question paper. When show-through occurs, the question paper 5 becomes difficult to see, and in the worst case, the correct answer (invisible printing section) 54 on the opposite side overlaps with the answer 51 written by the answerer and the correct answer (invisible printing section) 53 on the front side. As a result, it becomes unreadable and scoring mistakes are likely to occur.

そこで、本発明者は、これらの観点から、光の波長及び光の照射強度をどのように設定すればよいかについて検証を行った。 Therefore, the present inventor has verified how to set the wavelength of light and the irradiation intensity of light from these viewpoints.

<光の波長の検証>
光の波長については、できるだけ長くすべきということで、ブルーライトの使用を検討した。そこで、ブルーライトの波長領域を中心として以下の11種類のピーク波長のものを用意し、4名の各被験者が各波長の光を以下の照射条件で問題用紙に照射して採点作業を行い、各評価項目について評価した。
<Verification of wavelength of light>
As for the wavelength of light, we considered using blue light because it should be as long as possible. Therefore, the following 11 types of peak wavelengths are prepared centering on the wavelength region of blue light, and each of the four subjects irradiates the question paper with light of each wavelength under the following irradiation conditions to perform scoring work. Each evaluation item was evaluated.

<波長>
No.1:365nm(日亜化学工業株式会社製365nmのLED)
No.2:370nm(日亜化学工業株式会社製365nmのLED+バンドパスフィルタ370±2nm)
No.3:375nm(日亜化学工業株式会社製375nmのLED)
No.4:380nm(日亜化学工業株式会社製375nmのLED+バンドパスフィルタ380±2nm)
No.5:385nm(日亜化学工業株式会社製385nmのLED)
No.6:390nm(日亜化学工業株式会社製395nmのLED+バンドパスフィルタ390±2nm)
No.7:395nm(日亜化学工業株式会社製395nmのLED)
No.8:400nm(日亜化学工業株式会社製395nmのLED+バンドパスフィルタ400±2nm)
No.9:405nm(日亜化学工業株式会社製405nmのLED)
No.10:410nm(日亜化学工業株式会社製405nmのLED+バンドパスフィルタ410±2nm)
No.11:415nm(日亜化学工業株式会社製405nmのLED+バンドパスフィルタ415±2nm)
<Wavelength>
No.1: 365nm (365nm LED manufactured by Nichia Corporation)
No.2: 370nm (365nm LED + bandpass filter manufactured by Nichia Corporation 370 ± 2nm)
No.3: 375nm (375nm LED manufactured by Nichia Corporation)
No.4: 380nm (375nm LED + bandpass filter manufactured by Nichia Corporation 380 ± 2nm)
No.5: 385nm (385nm LED manufactured by Nichia Corporation)
No.6: 390nm (395nm LED + bandpass filter manufactured by Nichia Corporation 390 ± 2nm)
No.7: 395nm (395nm LED manufactured by Nichia Corporation)
No.8: 400nm (395nm LED + bandpass filter 400 ± 2nm manufactured by Nichia Corporation)
No.9: 405nm (405nm LED manufactured by Nichia Corporation)
No.10: 410nm (405nm LED + bandpass filter 410 ± 2nm manufactured by Nichia Corporation)
No.11: 415nm (405nm LED + bandpass filter 415 ± 2nm manufactured by Nichia Corporation)

<照射条件>
照明環境:室内照度800ルクス
照射面(問題用紙5の表面)からヘッド部4(LED光源45)までの高さ:250mm
照射領域:250mm×250mm
照射強度:413μW/cm2(照射領域の中心部のピーク強度(均斉度は±10%程度))
<Irradiation conditions>
Lighting environment: Indoor illuminance 800 lux Height from irradiation surface (surface of problem paper 5) to head 4 (LED light source 45): 250 mm
Irradiation area: 250 mm x 250 mm
Irradiation intensity: 413 μW / cm 2 (Peak intensity at the center of the irradiation area (uniformity is about ± 10%))

<評価項目>
見やすさ:可視化された不可視印刷部の見やすさをいい、各被験者が10段階評価する。
裏写り:不可視印刷部の裏写りの程度をいい、各被験者が10段階評価する。
疲れ:採点作業の疲れ具合をいい、各被験者が1時間継続して採点作業を行った後の疲れ具合を10段階評価する。
<Evaluation items>
Ease of visibility: The visibility of the visualized invisible printing part, which is evaluated by each subject on a 10-point scale.
Show-through: The degree of show-through in the invisible printing area, which is evaluated by each subject on a 10-point scale.
Fatigue: The degree of fatigue of the scoring work, and the degree of fatigue after each subject continuously performs the scoring work for 1 hour is evaluated on a 10-point scale.

「見やすさ」の結果を図11(a)、「裏写り」の結果を図11(b)、「疲れ」の結果を図11(c)に示す。そして、これらの総合評価(各評価値を合計したもの)を図13(a)に示す。 The result of "easiness to see" is shown in FIG. 11 (a), the result of "show-through" is shown in FIG. 11 (b), and the result of "tiredness" is shown in FIG. 11 (c). Then, these comprehensive evaluations (the sum of each evaluation value) are shown in FIG. 13 (a).

<光の照射強度の検証>
光の照射強度(照射領域の中心部のピーク強度(均斉度は±10%程度))については、できるだけ低くとの条件の下、以下の11種類のもの(LEDに流す電流値を変えて調整)を用意した。光の波長の検証と同様、4名の各被験者が各照射強度の光を以下の照射条件で問題用紙に照射して採点作業を行い、各評価項目について評価した。
<Verification of light irradiation intensity>
Regarding the light irradiation intensity (peak intensity at the center of the irradiation area (uniformity is about ± 10%)), the following 11 types (adjusted by changing the current value flowing through the LED) under the condition that it is as low as possible. ) Was prepared. Similar to the verification of the wavelength of light, each of the four subjects irradiated the question paper with light of each irradiation intensity under the following irradiation conditions to perform scoring work, and evaluated each evaluation item.

<照射強度>
No.1:289μW/cm2(電流値70%)(日亜化学工業株式会社製395nmのLED)
No.2:310μW/cm2(電流値75%)(同上)
No.3:330μW/cm2(電流値80%)(同上)
No.4:351μW/cm2(電流値85%)(同上)
No.5:372μW/cm2(電流値90%)(同上)
No.6:413μW/cm2(電流値100%)(同上)
No.7:454μW/cm2(電流値110%)(同上)
No.8:475μW/cm2(電流値115%)(同上)
No.9:496μW/cm2(電流値120%)(同上)
No.10:516μW/cm2(電流値125%)(同上)
No.11:537μW/cm2(電流値130%)(同上)
なお、これらの数値は、照射面(問題用紙5の表面)における照射領域の中心部をUV強度計を用いて測定し、相違ないことを確認している。
<Radiation intensity>
No.1: 289 μW / cm 2 (current value 70%) (395 nm LED manufactured by Nichia Corporation)
No.2: 310 μW / cm 2 (current value 75%) (same as above)
No.3: 330 μW / cm 2 (current value 80%) (same as above)
No.4: 351 μW / cm 2 (current value 85%) (same as above)
No.5: 372 μW / cm 2 (current value 90%) (same as above)
No.6: 413 μW / cm 2 (current value 100%) (same as above)
No.7: 454 μW / cm 2 (current value 110%) (same as above)
No.8: 475 μW / cm 2 (current value 115%) (same as above)
No.9: 496 μW / cm 2 (current value 120%) (same as above)
No.10: 516 μW / cm 2 (current value 125%) (same as above)
No.11: 537 μW / cm 2 (current value 130%) (same as above)
It should be noted that these numerical values are confirmed to be the same by measuring the central portion of the irradiation region on the irradiation surface (the surface of the problem paper 5) using a UV intensity meter.

<照射条件>
照明環境:室内照度800ルクス
照射面(問題用紙5の表面)からヘッド部4(LED光源45)までの高さ:250mm
照射領域:250mm×250mm
<Irradiation conditions>
Lighting environment: Indoor illuminance 800 lux Height from irradiation surface (surface of problem paper 5) to head 4 (LED light source 45): 250 mm
Irradiation area: 250 mm x 250 mm

<評価項目>
見やすさ:可視化された不可視印刷部の見やすさをいい、各被験者が10段階評価する。
裏写り:不可視印刷部の裏写りの程度をいい、各被験者が10段階評価する。
疲れ:採点作業の疲れ具合をいい、各被験者が1時間継続して採点作業を行った後の疲れ具合を10段階評価する。
<Evaluation items>
Ease of visibility: The visibility of the visualized invisible printing part, which is evaluated by each subject on a 10-point scale.
Show-through: The degree of show-through in the invisible printing area, which is evaluated by each subject on a 10-point scale.
Fatigue: The degree of fatigue of the scoring work, and the degree of fatigue after each subject continuously performs the scoring work for 1 hour is evaluated on a 10-point scale.

「見やすさ」の結果を図12(a)、「裏写り」の結果を図12(b)、「疲れ」の結果を図12(c)に示す。そして、これらの総合評価(各評価値を合計したもの)を図13(b)に示す。 The result of "easiness to see" is shown in FIG. 12 (a), the result of "show-through" is shown in FIG. 12 (b), and the result of "tiredness" is shown in FIG. 12 (c). Then, these comprehensive evaluations (the sum of each evaluation value) are shown in FIG. 13 (b).

<考察>
図13(a)に示す結果から、光のピーク波長は、375nm以上が好ましく、380nm以上がより好ましく、390nm以上がさらに好ましく、また、410nm以下が好ましく、405nm以下がより好ましく、400nm以下がさらに好ましいことがわかった。また、図13(b)に示す結果から、光の照射強度は、289μW/cm以上が好ましく、330μW/cm以上がより好ましく、351μW/cm以上がさらに好ましく、また、496μW/cm以下が好ましく、475μW/cm以下がより好ましく、454μW/cm以下がさらに好ましいことがわかった。
<Discussion>
From the results shown in FIG. 13A, the peak wavelength of light is preferably 375 nm or more, more preferably 380 nm or more, further preferably 390 nm or more, preferably 410 nm or less, more preferably 405 nm or less, and further preferably 400 nm or less. It turned out to be preferable. Further, from the results shown in FIG. 13 (b), the irradiation intensity of light is preferably 289μW / cm 2 or more, more preferably 330μW / cm 2 or more, more preferably 351μW / cm 2 or more, also, 496μW / cm 2 It was found that the following is preferable, 475 μW / cm 2 or less is more preferable, and 454 μW / cm 2 or less is further preferable.

なお、裏写りについていえば、裏写りが全く生じないのが好ましいが、表面の視認性が阻害されず(裏写りが表面の視認性に実質的な影響を与えず)、このため、採点作業に支障が生じないのであれば、多少の裏写りは許容できる。図11(b)、図12(b)において、評価が「10」に到達していないのはこのことを表している。また、請求項5の「防止ないし抑制」との記載はこのことを意図する趣旨である。 Regarding show-through, it is preferable that show-through does not occur at all, but the visibility of the surface is not impaired (the show-through does not substantially affect the visibility of the surface), and therefore the scoring work is performed. Some show-through is acceptable as long as it does not cause any problems. In FIGS. 11 (b) and 12 (b), the fact that the evaluation has not reached "10" indicates this. In addition, the description of "prevention or suppression" in claim 5 is intended to this effect.

以上から、本実施形態に係る可視化装置1及び採点システムにおいて、光は、ピーク波長が375nm以上410nm以下の範囲内となるように設定し、印刷面における光の照射強度は、照射領域の中心部のピーク強度が289μW/cm以上496μW/cm以下の範囲内となるように設定することとした。これにより、安全性への配慮はもちろんのこと、可視化された正解(不可視印刷部)は見やすく、裏写りもないため、採点作業の作業効率がよく、また、採点者が長時間の採点作業でも疲れにくいという効果を得ることができた。 From the above, in the visualization device 1 and the scoring system according to the present embodiment, the light is set so that the peak wavelength is within the range of 375 nm or more and 410 nm or less, and the irradiation intensity of the light on the printing surface is the central portion of the irradiation region. It was decided to set the peak intensity of 289 μW / cm 2 or more and 496 μW / cm 2 or less. As a result, not only safety is taken into consideration, but the visualized correct answer (invisible printing part) is easy to see and there is no show-through, so the work efficiency of the scoring work is good, and the grader can perform the scoring work for a long time. I was able to obtain the effect of not getting tired easily.

また、本実施形態に係る可視化装置1及び採点システムによれば、光の照射領域を画定する手段として、側部が不透明(略不透明の場合を含む)でかつ下方が開放されたセード部47が設けられる。そして、ヘッド部4は、人の目の高さ位置よりも低い高さ位置に配置される。このため、下方からセード部47内を覗かない限りは、LED光源45はセード部47に囲われて見えない。すなわち、本実施形態に係る可視化装置1及び採点システムによれば、印刷面に対して上方から光が照射され、かつ、視線が向く先の方向に光が照射されるため、光が人の目に直接的に入射することはない。これにより、採点者あるいは採点者のそばに立つ解答者がLED光源45を不測に直視してしまうのを防止することができる。 Further, according to the visualization device 1 and the scoring system according to the present embodiment, as a means for defining the light irradiation region, a shade portion 47 whose side portion is opaque (including the case where it is substantially opaque) and whose lower portion is open is provided. Provided. Then, the head portion 4 is arranged at a height position lower than the height position of the human eye. Therefore, the LED light source 45 is surrounded by the shade portion 47 and cannot be seen unless the inside of the shade portion 47 is viewed from below. That is, according to the visualization device 1 and the scoring system according to the present embodiment, the printed surface is irradiated with light from above and the light is irradiated in the direction in which the line of sight is directed, so that the light is the human eye. It does not directly incident on. This makes it possible to prevent the grader or the answerer standing near the grader from unexpectedly looking directly at the LED light source 45.

また、本実施形態に係る可視化装置1及び採点システムにおいて、光の照射領域は、250±50mm角、すなわち縦横それぞれ200mm以上、300mm以下の範囲内の広角な矩形状に設定される。これにより、不可視印刷部全体を同時に照射することができるため、途中に問題用紙の位置をずらす必要はなく、問題用紙の一面を一回的に採点することができる。 Further, in the visualization device 1 and the scoring system according to the present embodiment, the light irradiation region is set to a wide-angle rectangular shape within a range of 250 ± 50 mm square, that is, 200 mm or more and 300 mm or less in the vertical and horizontal directions, respectively. As a result, the entire invisible printing portion can be illuminated at the same time, so that it is not necessary to shift the position of the question paper in the middle, and one side of the question paper can be scored once.

また、本実施形態に係る可視化装置1及び採点システムによれば、光源のヘッド部4は、支持部(ベース部2及びアーム部3)によって支持される。このため、採点者は、ヘッド部4を支持するために手が取られることはない。これにより、採点作業の効率化及び時間短縮を図ることができる。 Further, according to the visualization device 1 and the scoring system according to the present embodiment, the head portion 4 of the light source is supported by the support portion (base portion 2 and arm portion 3). Therefore, the grader does not take a hand to support the head portion 4. As a result, the efficiency of the scoring work and the time can be shortened.

また、本実施形態に係る可視化装置1及び採点システムによれば、ヘッド部4は、可撓性を有するアーム部3によって、印刷面との間隔を変更可能である。これにより、印刷面における光の照射強度及び照射領域を好適な状態に調整することができる。 Further, according to the visualization device 1 and the scoring system according to the present embodiment, the distance between the head portion 4 and the printing surface can be changed by the flexible arm portion 3. Thereby, the light irradiation intensity and the irradiation region on the printed surface can be adjusted to a suitable state.

なお、本発明に係る可視化装置及び可視化方法並びに印刷シートは、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変更が可能である。 The visualization device, visualization method, and printing sheet according to the present invention are not limited to the above embodiments, and various modifications can be made without departing from the gist of the present invention.

たとえば、上記実施形態においては、光の波長及び印刷面における光の照射強度(の少なくともいずれか)を所望の値に設定ないし調整することで、裏写りを防止することができる。また、必要に応じて、不可視インクの厚み(不可視印刷部の印刷層の厚み)や印刷シートの紙質(厚さ、密度)を適宜のものに設定ないし調整することによっても、裏写りを防止することができる。その上で、可視化装置1に調光機能を搭載し、光の照射強度の大小を調整することができるようにすれば、さらに裏写りの防止効果を高めることができる。また、この調光機能を使うことにより、各採点者は、見えやすい、裏写りしない、疲れにくいという各観点で、自分に合った照射強度を設定することができる。なお、この調光機能は、室内形状、室内構造、照明装置の配置箇所、照明装置の光量及び光質、時間的や季節的や室内への採光構造の相違に基づく室内に入射する太陽光の光量などを因子とする照明環境の相違ないし変化に対応できるという点でも、搭載するのが望ましい機能である。 For example, in the above embodiment, show-through can be prevented by setting or adjusting the wavelength of light and the irradiation intensity of light on the printing surface (at least one of them) to desired values. In addition, show-through can be prevented by appropriately setting or adjusting the thickness of the invisible ink (thickness of the printing layer of the invisible printing portion) and the paper quality (thickness, density) of the printing sheet, if necessary. be able to. On top of that, if the visualization device 1 is equipped with a dimming function so that the magnitude of the light irradiation intensity can be adjusted, the effect of preventing show-through can be further enhanced. In addition, by using this dimming function, each grader can set the irradiation intensity that suits him / her from the viewpoints of easy visibility, no show-through, and less fatigue. This dimming function is based on the shape of the room, the structure of the room, the location of the lighting device, the amount and quality of the light of the lighting device, the time and season, and the difference in the lighting structure of the room. It is also a desirable function to be installed in that it can respond to differences or changes in the lighting environment due to factors such as the amount of light.

また、上記実施形態においては、可視化装置1は、セード部47(庇カバー)を備え、LED光源45を直視できないようになっているが、可視化装置が倒れた場合は、不測に直視してしまうおそれがある。これを防止するために、可視化装置1に、傾斜センサや、ベース部2が載置面から離れたことを検知する裏面センサを設け、可視化装置が傾いたり、倒れると、LED光源45の点灯がOFFになる機能を設けるのが好ましい。 Further, in the above embodiment, the visualization device 1 is provided with a shade portion 47 (eaves cover) so that the LED light source 45 cannot be directly viewed, but if the visualization device collapses, the visualization device 1 unexpectedly looks directly at the LED light source 45. There is a risk. In order to prevent this, the visualization device 1 is provided with a tilt sensor and a back surface sensor that detects that the base portion 2 is separated from the mounting surface, and when the visualization device is tilted or tilted, the LED light source 45 is turned on. It is preferable to provide a function to turn it off.

また、上記実施形態においては、可視化装置1のセード部47は、角筒状であり、これにより、照射領域は、矩形状に設定される。しかし、照射領域の形状は、矩形状に限定されるものではなく、たとえば円形状であってもよい。この場合は、セード部47は、図14及び図15に示す如く、円筒状のものとすればよい。 Further, in the above embodiment, the shade portion 47 of the visualization device 1 has a square tubular shape, whereby the irradiation area is set to a rectangular shape. However, the shape of the irradiation region is not limited to a rectangular shape, and may be, for example, a circular shape. In this case, the shade portion 47 may be cylindrical as shown in FIGS. 14 and 15.

また、上記実施形態においては、可視化装置1は、ベース部2を机やテーブル等に載置するスタンド式である。しかし、ベース部2の代わりに、マグネット部、クランプ部又はクリップ部を用いるようにしてもよい。要するに、ヘッド部4を所要位置に支持する支持部の構造は特に限定されるものではなく、公知の各種の構造を採用することができる。この点、アーム部3も上記実施形態に限定されるものではなく、二以上のバーが関節接続されたアーム等、公知の各種の構造を採用することができる。あるいは、ベース部等とヘッド部とをたとえば自在継手で接続することで、アーム部を無くすこともできる。 Further, in the above embodiment, the visualization device 1 is a stand type in which the base portion 2 is placed on a desk, a table, or the like. However, instead of the base portion 2, a magnet portion, a clamp portion or a clip portion may be used. In short, the structure of the support portion that supports the head portion 4 at the required position is not particularly limited, and various known structures can be adopted. In this respect, the arm portion 3 is not limited to the above embodiment, and various known structures such as an arm in which two or more bars are jointly connected can be adopted. Alternatively, the arm portion can be eliminated by connecting the base portion or the like and the head portion with, for example, a universal joint.

また、上記実施形態においては、印刷シートとして、問題用紙が解答用紙を兼用するものが用いられる。しかし、問題用紙と解答用紙が別々になっているものであってもよい。 Further, in the above embodiment, as the printing sheet, a question sheet that also serves as an answer sheet is used. However, the question sheet and the answer sheet may be separate.

また、上記実施形態においては、解答用紙において、解答記載箇所ないし解答欄の近傍に正解(不可視印刷部)が印刷される。しかし、これに限定されるものではない。解答者の解答と正解(不可視印刷部)とを一回的に確認することができて採点作業を円滑に行うことができるのであれば、両者はある程度離間した位置に設けられるようにしてもよい。また、この観点からいえば、解答用紙に正解(不可視印刷部)が印刷されることは必須ではない。たとえば、解答用紙とは別に正解(不可視印刷部)が印刷された印刷シートを用意し、両者を並べて採点作業を行うようにしてもよい。 Further, in the above embodiment, the correct answer (invisible printing unit) is printed on the answer sheet in the vicinity of the answer description location or the answer column. However, it is not limited to this. If the answerer's answer and the correct answer (invisible printing section) can be confirmed once and the scoring work can be performed smoothly, the two may be provided at positions separated to some extent. .. From this point of view, it is not essential that the correct answer (invisible printing section) is printed on the answer sheet. For example, a print sheet on which the correct answer (invisible printing unit) is printed may be prepared separately from the answer sheet, and both may be arranged side by side for scoring work.

しかし、英語や国語等の科目において、正解が文章であるとか、正解が文章の一部であるとか、正解が語を並び替えて文章にするものであるとか、正解が英単語や英熟語のスペリングの正確さを重視するものであるといったように、情報量が多い場合や、解答と正解の詳細な対比が要求される場合は、正解(不可視印刷部)が解答の近傍にあることが重要である。たとえば、図16に示す例がそうである。設問6)と設問9)の解答51は誤っているが、仮に正解(不可視印刷部)53が離れた箇所にあるとすると、その間違いが看過されるおそれがある。また、そもそもとして、正解(不可視印刷部)を解答から離間した位置に設けようにもその場所が確保できない紙面上の制約もあり得る。このように、正解(不可視印刷部)を解答の近傍に設けることにより、採点作業の正確性及び迅速性を担保することができる。他方、正解を解答の近傍に設けると、上述のとおり、裏写りによる見にくさ、ひいては採点ミスを誘発するおそれがある。しかし、光の波長及び印刷面における光の照射強度(の少なくともいずれか)を上述の所望の値に設定ないし調整することで、その問題も解消することができる。 However, in subjects such as English and Japanese, the correct answer is a sentence, the correct answer is a part of the sentence, the correct answer is to rearrange the words into sentences, and the correct answer is English words or English idioms. When there is a large amount of information, such as when spelling accuracy is important, or when a detailed comparison between the answer and the correct answer is required, it is important that the correct answer (invisible printing section) is near the answer. Is. For example, the example shown in FIG. Answers 51 of questions 6) and 9) are incorrect, but if the correct answer (invisible printing section) 53 is located at a distance, the error may be overlooked. Further, in the first place, even if the correct answer (invisible printing unit) is provided at a position away from the answer, there may be a limitation on the paper that the place cannot be secured. By providing the correct answer (invisible printing unit) in the vicinity of the answer in this way, the accuracy and speed of the scoring work can be ensured. On the other hand, if the correct answer is provided near the answer, as described above, it may be difficult to see due to show-through, which may lead to scoring mistakes. However, the problem can be solved by setting or adjusting the wavelength of light and the irradiation intensity of light on the printing surface (at least one of them) to the above-mentioned desired values.

また、上記実施形態においては、不可視印刷部全体(全ての正解(不可視印刷部))を同時に照射可能な照射領域が設定されることで、問題用紙の一面を一回的に採点することを可能にする。しかし、これに限定されるものではない。採点途中に問題用紙の位置をずらす必要があるとしても、それが1〜2回程度で済むのであれば、採点スピードはさほど変わらないので、その程度において照射領域は多少小さく設定されても構わない。 Further, in the above embodiment, by setting an irradiation area capable of simultaneously irradiating the entire invisible printing section (all correct answers (invisible printing section)), it is possible to score one side of the question paper once. To. However, it is not limited to this. Even if it is necessary to shift the position of the question paper during scoring, if it is only necessary to do it once or twice, the scoring speed will not change so much, so the irradiation area may be set slightly smaller to that extent. ..

また、上記実施形態においては、印刷シートは、表面及び裏面の両面に印刷部(通常印刷部及び不可視印刷部)が印刷されるものである。しかし、印刷シートは、片面にのみ印刷されるものであってもよい。当然、この場合は、裏写りの問題は全く生じない。 Further, in the above embodiment, the printing sheet is printed with printing parts (normal printing part and invisible printing part) on both the front surface and the back surface. However, the print sheet may be printed on only one side. Of course, in this case, the show-through problem does not occur at all.

また、本発明に係る可視化装置及び可視化方法は、教育活動の一環としての採点システムでの使用に限定されるものではない。すなわち、本発明に係る可視化装置及び可視化方法は、不可視インクを用いて印刷されたあらゆる種類の印刷シートに適用可能である。そして、印刷シートは、紙媒体に限定されるものではない。たとえば、紙、合成紙、プラスチックシート、金属シート又はこれらの適宜の積層体からなる印刷シートであってもよい。さらには、本発明に係る可視化装置は、印刷シートへの使用に限定されるものではない。すなわち、本発明に係る可視化装置は、印刷シート以外に、所定の形状の立方体の表面に印刷された印刷物等、あらゆる形態の印刷物に適用可能である。 Further, the visualization device and the visualization method according to the present invention are not limited to the use in the scoring system as a part of educational activities. That is, the visualization device and visualization method according to the present invention can be applied to all kinds of printing sheets printed using invisible ink. The print sheet is not limited to the paper medium. For example, it may be a printing sheet composed of paper, synthetic paper, a plastic sheet, a metal sheet, or an appropriate laminate thereof. Furthermore, the visualization device according to the present invention is not limited to use on a printing sheet. That is, the visualization device according to the present invention can be applied to any form of printed matter such as a printed matter printed on the surface of a cube having a predetermined shape, in addition to the printed sheet.

1…可視化装置、2…ベース部、20…電源スイッチ、21…電源プラグ、22…電源コード、3…アーム部、4…ヘッド部、40…筐体、41…上筐体、42…下筐体、43…開口、44…光拡散板、45…LED光源、46…基板、47…セード部、48…外枠、49…反射板、5…問題用紙(印刷シート)、5a…表面、5b…裏面、50…設問(通常印刷部)、51…解答者が書き込んだ解答、52…照射領域、53…正解(不可視印刷部)、54…裏写りした正解(不可視印刷部) 1 ... Visualization device, 2 ... Base part, 20 ... Power switch, 21 ... Power plug, 22 ... Power cord, 3 ... Arm part, 4 ... Head part, 40 ... Housing, 41 ... Upper housing, 42 ... Lower housing Body, 43 ... opening, 44 ... light diffuser, 45 ... LED light source, 46 ... substrate, 47 ... shade part, 48 ... outer frame, 49 ... reflector, 5 ... problem paper (printing sheet), 5a ... surface, 5b ... back side, 50 ... question (normal printing section), 51 ... answer written by the answerer, 52 ... irradiation area, 53 ... correct answer (invisible printing section), 54 ... show-through correct answer (invisible printing section)

Claims (4)

不可視インクを用いて印刷された印刷面における不可視印刷部を可視化させるための可視化装置であって、
不可視印刷部を可視化するための特定の波長の光を照射するヘッド部と、
ヘッド部を、印刷面に対して上方から光が照射されるように支持する支持部とを備え
光は、ピーク波長が375nm以上410nm以下の光である
可視化装置。
A visualization device for visualizing an invisible printed portion on a printed surface printed with invisible ink.
A head unit that irradiates light of a specific wavelength to visualize the invisible printing unit,
A support portion that supports the head portion so that light is irradiated from above with respect to the printing surface is provided .
The light is a visualization device having a peak wavelength of 375 nm or more and 410 nm or less.
印刷面における光の照射強度は、289μW/cm以上496μW/cm以下となるように設定される
請求項1に記載の可視化装置。
Irradiation intensity of light in the printing surface, the visualization device according to claim 1, which is set to be 289μW / cm 2 or more 496μW / cm 2 or less.
不可視インクを用いて印刷された印刷面における不可視印刷部を可視化させるための可視化装置であって、A visualization device for visualizing an invisible printed portion on a printed surface printed with invisible ink.
不可視印刷部を可視化するための特定の波長の光を照射するヘッド部と、A head unit that irradiates light of a specific wavelength to visualize the invisible printing unit,
ヘッド部を、印刷面に対して上方から光が照射されるように支持する支持部とを備え、A support portion that supports the head portion so that light is irradiated from above with respect to the printing surface is provided.
印刷面における光の照射強度は、289μW/cmThe irradiation intensity of light on the printing surface is 289 μW / cm. 2 以上496μW/cmAbove 496 μW / cm 2 以下となるように設定されるSet to be as follows
可視化装置。Visualization device.
ヘッド部は、側部が不透明でかつ下方が開放された筒状のセード部を備え、
セード部は、不可視印刷部全体又は不可視印刷部全体の多くの部分を同時に照射する広角の照射領域を画定する
請求項1ないし請求項3のいずれか1項に記載の可視化装置。
The head portion has a tubular shade portion with an opaque side portion and an open bottom.
The visualization device according to any one of claims 1 to 3, wherein the shade unit defines a wide-angle irradiation area that simultaneously irradiates the entire invisible printing unit or many parts of the entire invisible printing unit.
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