JP7348861B2 - Information formation medium - Google Patents

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JP7348861B2
JP7348861B2 JP2020032948A JP2020032948A JP7348861B2 JP 7348861 B2 JP7348861 B2 JP 7348861B2 JP 2020032948 A JP2020032948 A JP 2020032948A JP 2020032948 A JP2020032948 A JP 2020032948A JP 7348861 B2 JP7348861 B2 JP 7348861B2
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直孝 渡邉
慎也 五十部
優 進藤
宏彰 高岡
隼一 杉本
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本発明は、書き換え可能な可変情報及び書き換え不能な固定情報を形成させる情報形成媒体に関する。 The present invention relates to an information forming medium that forms rewritable variable information and non-rewritable fixed information.

近年、カード類において、カード特有の情報とされる固定情報と、書き換えを対象とした情報を形成、消去を行う可変情報とが混在させたものが知られている。このようなカードは、固定情報と可変情報との形成領域を自在に設定可能な媒体が望まれる。 BACKGROUND ART In recent years, it has become known that cards have a mixture of fixed information, which is card-specific information, and variable information, which creates and erases information that is intended to be rewritten. It is desired that such a card be a medium in which the areas in which fixed information and variable information are formed can be freely set.

従来、媒体上に書き換え不能な固定情報と、書き換え可能な可変情報とを表示させたカード類が例えば特許文献１，２で知られている。特許文献１には、情報記録媒体において、可視情報記録面を不可逆性感熱記録層（非書換型情報記録部）と、サーマルヘッドの加熱による熱量に応じて記録、消去可能な可逆性感熱記録層（書換型情報記録部）とを、設定された記録領域で積層または面一状に併設させる構成のものが記載されている。 2. Description of the Related Art Conventionally, cards having non-rewritable fixed information and rewritable variable information displayed on a medium are known, for example, from Patent Documents 1 and 2. Patent Document 1 discloses that, in an information recording medium, a visible information recording surface includes an irreversible thermosensitive recording layer (non-rewritable information recording section) and a reversible thermosensitive recording layer that can record and erase information according to the amount of heat generated by heating a thermal head. (rewritable information recording section) are arranged in a stacked or flush manner in a set recording area.

また、特許文献２には、感熱記録媒体において、基板上の設定された領域に、サーマルヘッドによる所定の発色温度が印加されたときに所定の表示内容を表示するとともに、所定の消色温度が印加されたときにその所定の表示内容を消去する可逆性記録部が形成され、当該可逆性記録部で用いられる温度を越える所定の温度が印加されたときに所定の色に発色して固定される非可逆性記録部が当該可逆性記録部の周囲を含んで積層される構成のものが記載されている。 Further, Patent Document 2 discloses that in a thermal recording medium, when a predetermined coloring temperature is applied by a thermal head to a predetermined area on a substrate, a predetermined display content is displayed, and a predetermined decoloring temperature is applied to a predetermined area on a substrate. A reversible recording section is formed that erases a predetermined display content when an applied voltage is applied, and when a predetermined temperature exceeding the temperature used in the reversible recording section is applied, a predetermined color develops and is fixed. A configuration is described in which an irreversible recording section is stacked including the periphery of the reversible recording section.

特許第３２１２６５４号公報Patent No. 3212654 特開平０８－２４４３６０号公報Japanese Patent Application Publication No. 08-244360

しかしながら、上記特許文献１，２のような媒体は、サーマルヘッドによる熱印加では情報の印字速度が遅いという問題があると共に、書き換え可能な情報を形成させる領域が可逆性感熱記録層や可逆性記録部の配置位置で決定されることとなってレイアウトに応じた種々の媒体を必要として、情報形成の自由度が低いという問題がある。 However, media such as those disclosed in Patent Documents 1 and 2 have a problem in that information is printed at a slow speed when heat is applied by a thermal head, and the area where rewritable information is formed is formed on a reversible thermosensitive recording layer or a reversible recording layer. There is a problem in that the degree of freedom in information formation is low because the layout is determined by the arrangement position of the section, and various media are required depending on the layout.

そこで、本発明は上記課題に鑑みなされたもので、情報形成を高速化し、書き換え不能な固定情報と書き換え可能な可変情報とのレイアウトを自在として情報形成の自由度を向上させる情報形成媒体を提供することを目的とする。 Therefore, the present invention has been made in view of the above problems, and provides an information forming medium that speeds up information formation and improves the degree of freedom of information formation by making the layout of non-rewritable fixed information and rewritable variable information freely possible. The purpose is to

上記課題を解決するために、請求項１の発明では、書き換え可能な可変情報を形成させると共に、書き換え不能な固定情報を形成させる情報形成媒体であって、基材と、前記基材の少なくとも一方面上に設けられる第１樹脂部材に光熱変換部材料が含有された層であり、レーザ光照射による前記固定情報を形成させるレーザ発色層と、前記レーザ発色層上に設けられる伝熱遮蔽層と、前記レーザ発色層の全面上に前記伝熱遮蔽層を介在させて設けられる、前記固定情報を視認させる透明性を有する第２樹脂部材に光熱変換部材料が含有された層であり、前記可変情報をレーザ光照射の印加熱量に応じて形成、消去させるレーザリライト層と、を有する構成とする。 In order to solve the above problem, the invention according to claim 1 provides an information forming medium that forms rewritable variable information and forms non-rewritable fixed information, the information forming medium comprising a base material and at least one of the base material. A layer in which a photothermal conversion material is contained in a first resin member provided on the surface, a laser coloring layer forming the fixed information by laser light irradiation, and a heat transfer shielding layer provided on the laser coloring layer. , the layer is a layer in which a photothermal conversion material is contained in a second resin member having transparency that allows the fixed information to be visually recognized, and is provided on the entire surface of the laser coloring layer with the heat transfer shielding layer interposed therebetween; The structure includes a laser rewrite layer that forms and erases information according to the applied heat amount of laser beam irradiation.

請求項２の発明では、書き換え可能な可変情報を形成させると共に、書き換え不能な固定情報を形成させる情報形成媒体であって、基材と、前記基材の少なくとも一方面上に設けられる第２樹脂部材に光熱変換部材料が含有された層であり、前記可変情報をレーザ光照射の印加熱量に応じて形成、消去させるレーザリライト層と、前記レーザリライト層上に設けられる伝熱遮蔽層と、前記レーザリライト層の全面上に前記伝熱遮蔽層を介在させて設けられる、前記可変情報を視認させる透明性を有する第１樹脂部材に光熱変換部材料が含有された層であり、レーザ光照射による前記固定情報を形成させるレーザ発色層と、を有する構成とする。 In the invention of claim 2, there is provided an information forming medium for forming rewritable variable information and non-rewritable fixed information, the information forming medium comprising a base material and a second resin provided on at least one surface of the base material. a laser rewrite layer that is a layer in which a member contains a photothermal conversion material and forms and erases the variable information according to the applied heat amount of laser light irradiation; a heat transfer shielding layer provided on the laser rewrite layer; The layer is a layer in which a photothermal conversion material is contained in a first resin member having transparency that allows the variable information to be visually recognized, and is provided on the entire surface of the laser rewriting layer with the heat transfer shielding layer interposed therebetween, and the layer includes a photothermal conversion material. and a laser coloring layer for forming the fixed information.

本発明によれば、基材の少なくとも一方面上に第１樹脂部材に光熱変換部材料が含有されてレーザ光照射による固定情報を形成させるレーザ発色層が設けられ、固定情報を視認させる透明性を有する第２樹脂部材に光熱変換部材料が含有されて可変情報をレーザ光照射の印加熱量に応じて形成、消去させるレーザリライト層が当該レーザ発色層の全面上に伝熱遮蔽層を介在させて設けられる構成とし、または、基材の少なくとも一方面上に第２樹脂部材に光熱変換部材料が含有されて可変情報をレーザ光照射の印加熱量に応じて形成、消去させるレーザリライト層が設けられ、可変情報を視認させる透明性を有する第１樹脂部材に光熱変換部材料が含有されてレーザ光照射による固定情報を形成させるレーザ発色層がレーザリライト層の全面上に伝熱遮蔽層を介在させて設けられる構成とすることにより、レーザ光照射による情報形成を高速化し、書き換え不能な固定情報と書き換え可能な可変情報とのレイアウトを自在として情報形成の自由度を向上させることができるものである。 According to the present invention, a laser coloring layer is provided on at least one surface of the base material in which the first resin member contains a photothermal conversion material and forms fixed information by laser beam irradiation, and the laser coloring layer has transparency that allows the fixed information to be visually recognized. A second resin member containing a photothermal conversion material and forming and erasing variable information according to the applied heat amount of laser light irradiation includes a laser rewriting layer with a heat transfer shielding layer interposed on the entire surface of the laser coloring layer. Alternatively, a laser rewrite layer is provided on at least one surface of the base material, in which the second resin member contains a photothermal conversion material and forms and erases variable information in accordance with the applied heat amount of laser beam irradiation. A first resin member having transparency that allows variable information to be seen contains a photothermal conversion material, and a laser coloring layer that forms fixed information by laser beam irradiation, with a heat transfer shielding layer interposed on the entire surface of the laser rewrite layer. By adopting a configuration in which the information is provided in parallel, information formation by laser beam irradiation can be speeded up, and the layout of non-rewritable fixed information and rewritable variable information can be freely arranged, increasing the degree of freedom in information formation. be.

本発明に係る情報形成媒体の第１実施形態の構成図である。FIG. 1 is a configuration diagram of a first embodiment of an information forming medium according to the present invention. 図１の情報形成媒体に対する固定情報及び可変情報の形成方法を示した説明図（１）である。FIG. 2 is an explanatory diagram (1) showing a method of forming fixed information and variable information on the information forming medium of FIG. 1; 図１の情報形成媒体に対する固定情報及び可変情報の形成方法を示した説明図（２）である。FIG. 2 is an explanatory diagram (2) showing a method of forming fixed information and variable information on the information forming medium of FIG. 1; 本発明に係る情報形成媒体の第２実施形態の構成図である。It is a block diagram of 2nd Embodiment of the information formation medium based on this invention.

以下、本発明の実施形態を図により説明する。
図１に、本発明に係る情報形成媒体の第１実施形態の構成図を示す。図１（Ａ）において、情報形成媒体１１は、基材１２上の所定位置（本実施形態では全面とする）にレーザ発色層１３が設けられ、当該レーザ発色層１３上に伝熱遮蔽層１４を介在させてレーザリライト層１５が設けられたものである。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a configuration diagram of a first embodiment of an information forming medium according to the present invention. In FIG. 1A, the information forming medium 11 includes a laser coloring layer 13 provided at a predetermined position (in this embodiment, the entire surface) on a base material 12, and a heat transfer shielding layer 14 on the laser coloring layer 13. A laser rewrite layer 15 is provided with a .

上記基材１２は、全体的に例えば白色の樹脂を主成分として例えば厚さ５６０μｍのものであり、例えばポリエチレンテレフタレート（ＰＥＴ）、ポリ塩化ビニル（ＰＶＣ）、ポリエチレンテレフタレートグリコール（ＰＥＴ－Ｇ）、ポリカーボネート（ＰＣ）などの公知の不透明な白色の樹脂が使用される。この実施形態では白色のＰＥＴ－Ｇを使用する。 The base material 12 is made of, for example, a white resin as a main component and has a thickness of, for example, 560 μm, and is made of, for example, polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyethylene terephthalate glycol (PET-G), or polycarbonate. A known opaque white resin such as (PC) is used. In this embodiment, white PET-G is used.

上記レーザ発色層１３は、例えば第１樹脂部材としてのポリカーボネート（ＰＣ）に、例えばレーザ光の照射で発色する光熱変換部材を含有させたものであり、例えば厚さ１００μｍで形成される。当該光熱変換部材しては、酸化インジウムスズ（ＩＴＯ）、酸化タングステン化合物、六ホウ化物が挙げられ、例えばセシウム酸化タングステンが用いられる。 The laser coloring layer 13 is made of, for example, polycarbonate (PC) as a first resin member containing, for example, a photothermal conversion member that develops color when irradiated with a laser beam, and is formed to have a thickness of, for example, 100 μm. Examples of the photothermal conversion member include indium tin oxide (ITO), tungsten oxide compounds, and hexaborides, and for example, cesium tungsten oxide is used.

上記レーザリライト層１５は、例えばポリエチレンテレフタレート（ＰＥＴ）上に、第２樹脂部材としてのバインダ樹脂（例えば、ポリウレタン樹脂）に染料（ロイコ染料）、顕色剤、光熱変換部材（例えば７％添加）を含有させたリライト層を形成させたものであり、例えば後述の伝熱遮蔽層１４を含めた厚さ４１μｍで形成される。当該光熱変換部材としては、上記同様のＩＴＯ、酸化タングステン化合物、六ホウ化物が挙げられ、上記同様にセシウム酸化タングステンが用いられる。すなわち、レーザ発色層１３とは異なり、上記バインダ樹脂に光熱変換部材を含有させることでレーザ光照射の印加熱量に応じて形成、消去させる機能を備えさせることができるものである。 The laser rewrite layer 15 is made of, for example, polyethylene terephthalate (PET), a binder resin (for example, polyurethane resin) as a second resin member, a dye (leuco dye), a color developer, and a photothermal conversion member (for example, 7% added). The rewrite layer is formed to have a thickness of, for example, 41 μm including the heat transfer shielding layer 14 described later. Examples of the light-to-heat conversion member include ITO, tungsten oxide compounds, and hexaborides similar to those described above, and cesium tungsten oxide is used similarly to the above. That is, unlike the laser coloring layer 13, by incorporating a photothermal conversion member into the binder resin, the layer can be formed and erased in accordance with the amount of heat applied by laser beam irradiation.

上記伝熱遮蔽層１４は、レーザリライト層１５の積層時に溶剤に対する耐薬品性の高い例えば透明なＰＥＴが使用されるもので、レーザ発色層１３に対するレーザ光照射による情報形成時にレーザリライト層１５への熱の伝わりによる意図せぬマーキングを低減させる役割をなすものである。なお、当該伝熱遮蔽層１４は、レーザ発色層１３とレーザリライト層１５とが直接に接触させないためのもので、その材質や厚み等は適宜設定されるものである。 The heat transfer shielding layer 14 is made of transparent PET, for example, which has high chemical resistance to solvents when the laser rewrite layer 15 is laminated. This serves to reduce unintended markings caused by heat transfer. Note that the heat transfer shielding layer 14 is provided to prevent the laser coloring layer 13 and the laser rewriting layer 15 from coming into direct contact, and its material, thickness, etc. are appropriately set.

上記情報形成媒体１１のレーザ発色層１３及びレーザリライト層１５に対してレーザ光を照射することで、図１（Ｂ）、（Ｃ）に示すように、レーザ発色層１３に固定情報２１を形成させ、レーザリライト層１５に書き換え対象の情報としての可変情報２２を形成させることで情報表示カード１１Ａとなる（詳細は図２、図３で説明する）。 By irradiating laser light onto the laser coloring layer 13 and laser rewrite layer 15 of the information forming medium 11, fixed information 21 is formed on the laser coloring layer 13, as shown in FIGS. 1(B) and (C). By causing the laser rewrite layer 15 to form variable information 22 as information to be rewritten, the information display card 11A is obtained (details will be explained with reference to FIGS. 2 and 3).

そこで、図２及び図３に、図１の情報形成媒体に対する固定情報及び可変情報の形成方法を示した説明図を示す。まず、図２（Ａ）に示すように、情報形成媒体１１上の所望の位置に印加熱量Ｒ１（例えば２００℃以上）の情報形成レーザ光３１Ａをレーザ発色層１３に焦点を合致させてスキャニングさせることで固定情報２１を形成させる。 Therefore, FIGS. 2 and 3 are explanatory diagrams showing a method of forming fixed information and variable information on the information forming medium of FIG. 1. First, as shown in FIG. 2(A), an information forming laser beam 31A having an applied heat amount R1 (for example, 200° C. or more) is scanned at a desired position on the information forming medium 11 by focusing on the laser coloring layer 13. This forms the fixed information 21.

続いて、図２（Ｂ）に示すように、情報形成媒体１１上の固定情報２１を形成させた領域以外の所望の位置に印加熱量Ｒ２（例えば１７０℃～１８０℃）の情報形成レーザ光３１Ｂをレーザリライト層１５に焦点を合致させてスキャニングさせることで、図２（Ｃ）に示すように、可変情報２２を形成させることで情報表示カード１１Ａとなる。なお、レーザリライト層１５への情報形成時の情報形成レーザ光３１Ｂの照射は、当該レーザリライト層１５の発泡を防止する意味でパルス状に照射することが望ましい。 Subsequently, as shown in FIG. 2(B), an information forming laser beam 31B with an applied heat amount R2 (for example, 170° C. to 180° C.) is applied to a desired position on the information forming medium 11 other than the area where the fixed information 21 is formed. By scanning with the focus on the laser rewrite layer 15, variable information 22 is formed as shown in FIG. 2(C), thereby forming an information display card 11A. Note that the information forming laser beam 31B is preferably irradiated in a pulsed manner when forming information on the laser rewrite layer 15 in order to prevent the laser rewrite layer 15 from bubbling.

上記情報表示カード１１Ａの可変情報２２を書き換える場合、図３（Ａ）に示すように、可変情報２２の所望の位置（一部または全部であり、ここでは一部とする）に印加熱量Ｒ３（例えば１２０℃～１５０℃）の情報消去レーザ光３１Ｃをレーザリライト層１５に焦点を合致させてスキャニングさせることで、図３（Ｂ）に示すように、可変情報２２に対する一部または全部を消去させる。上述のように、レーザ発色層１３の情報形成時の印加熱量Ｒ１と、レーザリライト層１５への情報形成時の印加熱量Ｒ２と、レーザリライト層１５への情報消去時の印加熱量Ｒ３との関係は、Ｒ１＞Ｒ２＞Ｒ３となる。 When rewriting the variable information 22 of the information display card 11A, as shown in FIG. 3(A), the amount of heat applied R3 ( For example, by scanning the information erasing laser beam 31C at a temperature of 120° C. to 150° C. while focusing on the laser rewrite layer 15, part or all of the variable information 22 is erased, as shown in FIG. 3(B). . As described above, the relationship between the amount of heat R1 applied when forming information on the laser color forming layer 13, the amount R2 of heat applied when forming information on the laser rewrite layer 15, and the amount R3 of heat applied when erasing information on the laser rewrite layer 15. is R1>R2>R3.

続いて、図３（Ｃ）に示すように、レーザリライト層１５の上記情報消去した位置に印加熱量Ｒ２の情報形成レーザ光３１Ｂをレーザリライト層１５に焦点を合致させてスキャニングさせることで、図３（Ｄ）に示すように、書き換えた可変情報２２を形成させた情報表示カード１１Ａとするものである。 Subsequently, as shown in FIG. 3(C), by scanning the information forming laser beam 31B with an applied heat amount R2 at the position where the information has been erased on the laser rewrite layer 15, the laser rewrite layer 15 is focused. As shown in FIG. 3(D), the information display card 11A has rewritten variable information 22 formed thereon.

このように、レーザ光照射による情報形成を高速化し、上記書き換え不能な固定情報２１と書き換え可能な可変情報２２とを重ならない位置に自在に形成させればよく、固定情報２１と可変情報２２とのレイアウトを自在として情報形成の自由度を向上させることができるものである。 In this way, it is only necessary to speed up the information formation by laser beam irradiation and freely form the non-rewritable fixed information 21 and the rewritable variable information 22 at positions that do not overlap. The layout can be changed freely and the degree of freedom in information formation can be improved.

次に、図４に、本発明に係る情報形成媒体の第２実施形態の構成図を示す。図４（Ａ）において、情報形成媒体１１は、基材１２上にレーザリライト層１５を設け、当該レーザリライト層１５上に伝熱遮蔽層１４を介在させてレーザ発色層１３を設けた構成のものである。 Next, FIG. 4 shows a configuration diagram of a second embodiment of the information forming medium according to the present invention. In FIG. 4A, the information forming medium 11 has a structure in which a laser rewrite layer 15 is provided on a base material 12, and a laser coloring layer 13 is provided on the laser rewrite layer 15 with a heat transfer shielding layer 14 interposed therebetween. It is something.

上記レーザリライト層１５、伝熱遮蔽層１４及びレーザ発色層１３は、上述の第１実施形態と略同様であるが、少なくともレーザ発色層１３は可変情報２２を視認させる透明性を有することを必要とする。 The laser rewriting layer 15, heat transfer shielding layer 14, and laser coloring layer 13 are substantially the same as those in the first embodiment, but at least the laser coloring layer 13 needs to have transparency that allows the variable information 22 to be seen. shall be.

そして、工程順を問わないが、図４（Ｂ）に示すように、情報形成媒体１１上の所望の位置に印加熱量Ｒ２の情報形成レーザ光３１Ｂをレーザリライト層１５に焦点を合致させてスキャニングさせることで可変情報２２を形成させる。 Then, although the order of steps does not matter, as shown in FIG. 4(B), the information forming laser beam 31B of the applied heat amount R2 is scanned at a desired position on the information forming medium 11 by focusing it on the laser rewrite layer 15. By doing so, variable information 22 is formed.

また、当該可変情報２２を形成させた領域以外の所望の位置に印加熱量Ｒ１の情報形成レーザ光３１Ａをレーザ発色層１３に焦点を合致させてスキャニングさせることで固定情報２１を形成させて情報表示カード１１Ａとするもので、この時、伝熱遮蔽層１４によりレーザリライト層１５への影響を低減させることができる。なお、レーザリライト層１５に対する可変情報２２の消去、再度の形成の手法は図３と同様である。 Further, fixed information 21 is formed by scanning the information forming laser beam 31A with the applied heat amount R1 at a desired position other than the area where the variable information 22 is formed, with the focus on the laser coloring layer 13. In this case, the effect on the laser rewrite layer 15 can be reduced by the heat transfer shielding layer 14. Note that the method of erasing the variable information 22 on the laser rewrite layer 15 and forming it again is the same as that shown in FIG.

このように、レーザリライト層１５とレーザ発色層１３との並びを第１実施形態の場合と逆とする構成とすることによっても、上記同様にレーザ光照射による情報形成を高速化し、書き換え不能な固定情報２１と書き換え可能な可変情報２２とを重ならない位置に自在に形成させればよく、固定情報２１と可変情報２２とのレイアウトを自在として情報形成の自由度を向上させることができるものである。 In this way, by configuring the arrangement of the laser rewriting layer 15 and the laser coloring layer 13 in the opposite manner to that in the first embodiment, information formation by laser beam irradiation can be speeded up in the same way as described above, and information that cannot be rewritten can be created. The fixed information 21 and the rewritable variable information 22 can be freely formed in positions that do not overlap, and the layout of the fixed information 21 and the variable information 22 can be freely arranged to improve the degree of freedom in information formation. be.

ところで、上記第１実施形態及び第２実施形態では、レーザ発色層１３、伝熱遮蔽層１４及びレーザリライト層１５を、基板１２の一方面上に設けた場合を示したが、基板１２の他方面上に併せて設けることとしてもよい。 Incidentally, in the first embodiment and the second embodiment described above, the laser coloring layer 13, the heat transfer shielding layer 14, and the laser rewriting layer 15 are provided on one side of the substrate 12, but other surfaces of the substrate 12 are provided. It may also be provided along the same direction.

本発明の情報形成媒体は、固定情報と書き換え可能な可変情報とが混在するカード等の製造、使用、販売等の産業に利用可能である。 The information forming medium of the present invention can be used in industries such as the manufacture, use, and sale of cards and the like in which fixed information and rewritable variable information coexist.

１１ 情報形成媒体
１１Ａ 情報表示カード
１２ 基材
１３ レーザ発色層
１４ 伝熱遮蔽層
１５ レーザリライト層
２１ 固定情報
２２ 可変情報
３１Ａ，３１Ｂ 情報形成レーザ光
３１Ｃ 情報消去レーザ光 11 Information forming medium 11A Information display card 12 Base material 13 Laser coloring layer 14 Heat transfer shielding layer 15 Laser rewriting layer 21 Fixed information 22 Variable information 31A, 31B Information forming laser beam 31C Information erasing laser beam

Claims (2)

書き換え可能な可変情報を形成させると共に、書き換え不能な固定情報を形成させる情報形成媒体であって、
基材と、
前記基材の少なくとも一方面上に設けられる第１樹脂部材に光熱変換部材料が含有された層であり、レーザ光照射による前記固定情報を形成させるレーザ発色層と、
前記レーザ発色層上に設けられる伝熱遮蔽層と、
前記レーザ発色層の全面上に前記伝熱遮蔽層を介在させて設けられる、前記固定情報を視認させる透明性を有する第２樹脂部材に光熱変換部材料が含有された層であり、前記可変情報をレーザ光照射の印加熱量に応じて形成、消去させるレーザリライト層と、
を有することを特徴とする情報形成媒体。 An information forming medium that forms rewritable variable information and non-rewritable fixed information,
base material and
a laser coloring layer, which is a layer in which a photothermal conversion material is contained in a first resin member provided on at least one surface of the base material, and forms the fixed information by laser light irradiation;
a heat transfer shielding layer provided on the laser coloring layer;
The layer is a layer in which a photothermal conversion material is contained in a second resin member having transparency that allows the fixed information to be visually recognized, and is provided on the entire surface of the laser coloring layer with the heat transfer shielding layer interposed therebetween. a laser rewrite layer that is formed and erased according to the applied heat amount of laser light irradiation;
An information forming medium characterized by having. 書き換え可能な可変情報を形成させると共に、書き換え不能な固定情報を形成させる情報形成媒体であって、
基材と、
前記基材の少なくとも一方面上に設けられる第２樹脂部材に光熱変換部材料が含有された層であり、前記可変情報をレーザ光照射の印加熱量に応じて形成、消去させるレーザリライト層と、
前記レーザリライト層上に設けられる伝熱遮蔽層と、
前記レーザリライト層の全面上に前記伝熱遮蔽層を介在させて設けられる、前記可変情報を視認させる透明性を有する第１樹脂部材に光熱変換部材料が含有された層であり、レーザ光照射による前記固定情報を形成させるレーザ発色層と、
を有することを特徴とする情報形成媒体。 An information forming medium that forms rewritable variable information and non-rewritable fixed information,
base material and
a laser rewrite layer, which is a layer in which a second resin member provided on at least one surface of the base material contains a photothermal conversion material, and forms and erases the variable information according to the amount of applied heat of laser light irradiation;
a heat transfer shielding layer provided on the laser rewrite layer;
The layer is a layer in which a photothermal conversion material is contained in a first resin member having transparency that allows the variable information to be visually recognized, and is provided on the entire surface of the laser rewriting layer with the heat transfer shielding layer interposed therebetween, and the layer includes a photothermal conversion material. a laser coloring layer for forming the fixed information by;
An information forming medium characterized by having.
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Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2001232942A (en) 2000-02-24 2001-08-28 Dainippon Printing Co Ltd Data recording medium and recording method therefor
JP2002127600A (en) 2000-10-20 2002-05-08 Dainippon Printing Co Ltd Composite heat sensitive recording layer, heat sensitive recording medium, heat sensitive recording layer transfer sheet, label for adhering heat sensitive recording layer, and method for recording
JP2003154691A (en) 2001-11-21 2003-05-27 Dainippon Printing Co Ltd Method for recording on indication recording medium
JP2003300385A (en) 2002-04-11 2003-10-21 Dainippon Printing Co Ltd Laser thermal recording medium and recording method
JP7314899B2 (en) 2020-10-14 2023-07-26 トヨタ自動車株式会社 Vibration control device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001232942A (en) 2000-02-24 2001-08-28 Dainippon Printing Co Ltd Data recording medium and recording method therefor
JP2002127600A (en) 2000-10-20 2002-05-08 Dainippon Printing Co Ltd Composite heat sensitive recording layer, heat sensitive recording medium, heat sensitive recording layer transfer sheet, label for adhering heat sensitive recording layer, and method for recording
JP2003154691A (en) 2001-11-21 2003-05-27 Dainippon Printing Co Ltd Method for recording on indication recording medium
JP2003300385A (en) 2002-04-11 2003-10-21 Dainippon Printing Co Ltd Laser thermal recording medium and recording method
JP7314899B2 (en) 2020-10-14 2023-07-26 トヨタ自動車株式会社 Vibration control device

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