JP2781565B2 - Electrostatic recording film - Google Patents
Electrostatic recording filmInfo
- Publication number
- JP2781565B2 JP2781565B2 JP21756788A JP21756788A JP2781565B2 JP 2781565 B2 JP2781565 B2 JP 2781565B2 JP 21756788 A JP21756788 A JP 21756788A JP 21756788 A JP21756788 A JP 21756788A JP 2781565 B2 JP2781565 B2 JP 2781565B2
- Authority
- JP
- Japan
- Prior art keywords
- electrostatic recording
- recording film
- conductive layer
- conductive
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は静電記録フィルムに関し、特に“カブリ”の
ない良好な画像を得ることのできる静電記録フィルムに
関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic recording film, and more particularly to an electrostatic recording film capable of obtaining a good image without "fog".
［従来の技術及び発明が解決しようとする課題］ 静電記録フィルムは、絶縁性フィルム上に導電層、誘
電層の順に積層されており、誘電層面あるいは両面から
電圧パルスを印加して誘電層上に静電潜像を形成し、ト
ナーによって現像し可視像とするものである。[Problems to be Solved by the Related Art and the Invention] An electrostatic recording film is formed by laminating a conductive layer and a dielectric layer in this order on an insulating film. An electrostatic latent image is formed on the surface of the sheet, and is developed with a toner to form a visible image.
このような静電記録フィルムの導電層は、良好な画像
を得るためにその表面抵抗値が105〜109Ωにコントロー
ルされている。このため、導電層の導電材料として湿度
の影響を受けにくい電子伝導性微粉末が使用されてい
る。The surface resistance of the conductive layer of such an electrostatic recording film is controlled to 10 5 to 10 9 Ω in order to obtain a good image. For this reason, as the conductive material of the conductive layer, an electron conductive fine powder that is not easily affected by humidity is used.
ところで、このような静電記録フィルムにおいては、
導電層のアースが完全でない場合、“カブリ”が生じる
ことが問題となる。すなわち、静電記録紙においては、
基紙そのものを導電処理し低抵抗化し、裏面よりアース
することにより“カブリ”を解消することが可能である
が、絶縁性フィルムに導電層を積層した静電記録フィル
ムの場合、裏面よりアースすることができないため、フ
ィルム両端部の導電層を露出させたり、更には露出した
部分に導電性塗料を塗工してアースするようにしてい
る。By the way, in such an electrostatic recording film,
If the grounding of the conductive layer is not perfect, "fogging" is a problem. That is, in electrostatic recording paper,
It is possible to eliminate "fog" by treating the base paper itself with a conductive material to reduce the resistance and grounding it from the back surface. Therefore, the conductive layer at both ends of the film is exposed, or the exposed portion is coated with a conductive paint to be grounded.
しかしながら、こうした加工は生産性も悪く、使用す
る機種によっては有効な効果を発揮していないのが現状
である。However, such processing is poor in productivity, and at present, no effective effect is exhibited depending on the type of machine used.
この発明は、このような従来の問題点を解決し、この
“カブリ”を解消させ、良好な画像を得る静電記録フィ
ルムを提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve such a conventional problem and to provide an electrostatic recording film capable of eliminating this "fog" and obtaining a good image.
［課題を解決するための手段］ このような目的を達成する本発明の静電記録フィルム
は、絶縁性透明フィルムの片面若しくは両面に導電層を
設け、一方の導電層上に誘電層を積層した静電記録フィ
ルムにおいて、少なくとも誘電層に隣接する導電層が粒
子径１〜20μｍの粒子を含有するものである。[Means for Solving the Problems] The electrostatic recording film of the present invention that achieves such objects has a structure in which a conductive layer is provided on one or both surfaces of an insulating transparent film, and a dielectric layer is laminated on one conductive layer. In the electrostatic recording film, at least the conductive layer adjacent to the dielectric layer contains particles having a particle size of 1 to 20 μm.
更に好適には、導電層が、粒子径１〜20μｍの粒子、
電子伝導性微粉末及び高分子結着剤からなり、粒子径１
〜20μｍの粒子と、前記電子伝導性微粉末及び高分子結
着剤との重量比が0.05/100〜20/100であるものである。More preferably, the conductive layer has a particle diameter of 1 to 20 μm,
Consisting of electron conductive fine powder and polymer binder, particle size 1
The weight ratio of the particles having a diameter of about 20 μm to the electron conductive fine powder and the polymer binder is 0.05 / 100 to 20/100.
本発明における導電層は、粒子径１〜20μｍの微粒子
が“カブリ”解消に対して極めて有効である。In the conductive layer of the present invention, fine particles having a particle diameter of 1 to 20 μm are extremely effective in eliminating “fog”.
ここで、用いられる粒子は、導電性であっても絶縁性
であってもいずれでもよく、例えば、酸化ケイ素、酸化
チタン、酸化鉛、炭酸カルシウム、チタン酸バリウム等
の無機粒子、ポリエチレン樹脂、ポリスチレン樹脂等の
有機高分子粒子、あるいはこれらの表面に導電処理した
もの、TiC、TiN等のような導電性粒子等から適宜選択さ
れるが、粒子径が１〜20μｍの範囲であることが必要で
ある。粒子径がこれより小さいものはカブリ解消に対す
る効果が少なく、また、これより大きいものは線切れ等
を発生させ好ましくない。Here, the particles used may be either conductive or insulating, for example, silicon oxide, titanium oxide, lead oxide, calcium carbonate, inorganic particles such as barium titanate, polyethylene resin, polystyrene Organic polymer particles such as resin, or those subjected to conductive treatment on the surface thereof, are appropriately selected from conductive particles such as TiC, TiN, etc., and the particle diameter needs to be in the range of 1 to 20 μm. is there. If the particle diameter is smaller than this, the effect on fog removal is small, and if it is larger than this, line breakage or the like occurs, which is not preferable.
更に、導電層に加えられる電子伝導性微粉末として
は、金属酸化物又は金属酸化物に特定の不純物をドープ
したものなど公知のものを用いることができ、例えば、
酸化スズに酸化アンチモンをドープしたもの、酸化亜鉛
に酸化アンモニウムをドープしたもの、酸化インジウム
に酸化スズをドープしたもの等が挙げられるが、これら
に限定されない。電子伝導性微粉末は透明性を維持する
ために、可視光波長の1/2以下、通常0.1μｍ以下のもの
を使用する。Further, as the electron conductive fine powder to be added to the conductive layer, a known material such as a metal oxide or a metal oxide doped with a specific impurity can be used, for example,
Examples thereof include tin oxide doped with antimony oxide, zinc oxide doped with ammonium oxide, and indium oxide doped with tin oxide, but are not limited thereto. In order to maintain transparency, an electron conductive fine powder having a wavelength equal to or less than half the wavelength of visible light, usually 0.1 μm or less is used.
また、導電層に使用される高分子結着剤としては、通
常の静電記録フィルムの導電層に用いられる各種の樹脂
を使用することができる。例えば、ポリエステル、ポリ
塩化ビニル、ポリアクリル酸エステル、ポリメタクリル
酸エステル、ポリアミド等が挙げられる。As the polymer binder used for the conductive layer, various resins used for the conductive layer of a normal electrostatic recording film can be used. For example, polyester, polyvinyl chloride, polyacrylate, polymethacrylate, polyamide and the like can be mentioned.
電子伝導性微粉末と高分子結着剤との重量比は通常10
0:15〜80である。また、１〜20μｍの粒子と、電子伝導
性微粉末及び高分子結着剤との重量比は0.05/100〜20/1
00の範囲が好ましく、重量比がこれより小さいと得られ
る効果が少なく、大きいと画像濃度の低下等を生じる。The weight ratio between the electron conductive fine powder and the polymer binder is usually 10
0: 15-80. Further, the weight ratio of the particles of 1 to 20 μm to the electron conductive fine powder and the polymer binder is 0.05 / 100 to 20/1.
The range of 00 is preferable. If the weight ratio is smaller than this, the effect obtained is small, and if it is large, the image density is lowered.
本発明の導電層には、その他必要に応じて可塑剤、酸
化防止剤、安定剤等を適宜添加することができる。To the conductive layer of the present invention, a plasticizer, an antioxidant, a stabilizer, and the like can be appropriately added as needed.
導電層は、電子伝導性微粉末と１〜20μｍの粒子とを
適当な溶媒と共に高分子結着剤中に分散させたものを絶
縁性透明フィルムの片面又は両面にロール、ブレード、
バー等の通常の塗工手段で塗工し形成する。導電層の塗
工量は、通常0.5〜2g/m2程度であるがこれに限定される
ものではない。The conductive layer is a roll of an electrically conductive fine powder and particles of 1 to 20 μm dispersed in a polymer binder together with a suitable solvent on one or both sides of an insulating transparent film, a blade,
It is formed by coating with ordinary coating means such as a bar. The coating amount of the conductive layer is usually about 0.5 to 2 g / m 2 , but is not limited thereto.
本発明の誘電層は、高分子結着剤と顔料からなり、高
分子結着剤としては通常の静電記録フィルムの誘電層に
用いられる各種の樹脂を使用することができる。例え
ば、ポリ塩化ビニル、ポリスチレン、ポリアクリル酸エ
ステル、ポリメタクリル酸エステル、ポリビニルアセタ
ール、ポリビニルブチラール、ポリエステル等が挙げら
れる。The dielectric layer of the present invention is composed of a polymer binder and a pigment. As the polymer binder, various resins used for a dielectric layer of an ordinary electrostatic recording film can be used. Examples include polyvinyl chloride, polystyrene, polyacrylate, polymethacrylate, polyvinyl acetal, polyvinyl butyral, and polyester.
顔料としては、炭酸カルシウム、二酸化チタン、シリ
カ等公知のものが用いられる。誘電層は導電層と同様塗
工によって形成することができ、誘電層の厚さは通常４
〜６μｍである。Known pigments such as calcium carbonate, titanium dioxide and silica are used as the pigment. The dielectric layer can be formed by coating in the same manner as the conductive layer.
６6 μm.
本発明の絶縁性透明フィルムとしては、ポリエステル
フィルム、ポリエチレンフィルム、ポリプロピレンフィ
ルム、ポリカーボネートフィルム、ポリイミドフィルム
等が挙げられる。Examples of the insulating transparent film of the present invention include a polyester film, a polyethylene film, a polypropylene film, a polycarbonate film, and a polyimide film.
［実施例］ 以下、本発明の好ましい実施例を説明する。EXAMPLES Hereinafter, preferred examples of the present invention will be described.
［実施例１］ ・ポリエステル樹脂 2.5 重量部 ・導電性酸化錫 7.5 重量部 ・シリカ（粒子径４μｍ） 0.001重量部 （サイロイド978:富士デヴィソン社製） ・メチルエチルケトン 45 重量部 ・トルオール 45 重量部 をボールミルで分散し、ポリエチレンテレフタレートフ
ィルム上に乾燥重量で1.5g/m2になるようにワイヤバー
にて塗工し、６×106Ωの導電層を形成した。Example 1 2.5 parts by weight of polyester resin 7.5 parts by weight of conductive tin oxide 0.001 part by weight of silica (particle diameter 4 μm) (Syloid 978: manufactured by Fuji Devison) 45 parts by weight of methyl ethyl ketone 45 parts by weight of toluene And coated with a wire bar on a polyethylene terephthalate film so as to have a dry weight of 1.5 g / m 2 to form a 6 × 10 6 Ω conductive layer.
・ポリビニルブチラール 15重量部 ・炭酸カルシウム 15重量部 ・イソプロピルアルコール 35重量部 ・トルオール 35重量部 をボールミルで分散した誘電層塗液を導電層上にワイヤ
バーにて乾燥重量で1.5g/m2になるように塗工し、静電
記録フィルムを得た。・ 15 parts by weight of polyvinyl butyral ・ 15 parts by weight of calcium carbonate ・ 35 parts by weight of isopropyl alcohol ・ 35 parts by weight of toluene dispersed in a dielectric layer coating liquid with a ball mill dispersed on a conductive layer to a dry weight of 1.5 g / m 2 with a wire bar To obtain an electrostatic recording film.
［実施例２〜６］ 導電層塗液中のサイロイド978の添加量を変えた他は
実施例１と同様にして静電記録フィルムを得た。[Examples 2 to 6] An electrostatic recording film was obtained in the same manner as in Example 1 except that the amount of thyroid 978 in the conductive layer coating liquid was changed.
［比較例］ 導電層塗液中にサイロイド978を用いず、他は実施例
１と同様にして静電記録フィルムを得た。[Comparative Example] An electrostatic recording film was obtained in the same manner as in Example 1 except that no syloid 978 was used in the conductive layer coating liquid.
実施例１〜６及び比較例の静電記録フィルムについ
て、各記録画像のカブリ、ゴースト、異常ドット及び線
切れの発生状況及び画像濃度を比較した。結果を表１に
示す。With respect to the electrostatic recording films of Examples 1 to 6 and Comparative Example, the occurrence states of fog, ghosts, abnormal dots, and broken lines and image densities of the recorded images were compared. Table 1 shows the results.
表１からも明らかなように実施例２〜５においては全
くカブリがなく、良好な画像が得られた。なお、実施例
１〜６及び比較例全て低湿（20％）から高湿（80％）の
範囲内でも安定した画像が得られた。 As is clear from Table 1, in Examples 2 to 5, there was no fog at all, and good images were obtained. In all of Examples 1 to 6 and Comparative Example, stable images were obtained even in the range of low humidity (20%) to high humidity (80%).
［発明の効果］ 上記実施例からも明らかなように本発明の静電記録フ
ィルムは、電子伝導性微粉末及び高分子結着剤を含む導
電層に特定の粒子を添加することにより、“カブリ”を
防止し、良好な画像を得ることができた。[Effects of the Invention] As is clear from the above examples, the electrostatic recording film of the present invention can be obtained by adding specific particles to a conductive layer containing an electron conductive fine powder and a polymer binder, thereby reducing the fog. Was prevented, and a good image was obtained.
Claims (3)
導電層を設け、一方の導電層上に誘電層を積層した静電
記録フィルムにおいて、少なくとも前記誘電層に隣接す
る前記導電層が粒子径１〜20μｍの粒子を含有すること
を特徴とする静電記録フィルム。1. An electrostatic recording film in which a conductive layer is provided on one or both surfaces of an insulating transparent film and a dielectric layer is laminated on one of the conductive layers, wherein at least the conductive layer adjacent to the dielectric layer has a particle size of 1 An electrostatic recording film containing particles of up to 20 μm.
末及び高分子結着剤からなることを特徴とする請求項１
記載の静電記録フィルム。2. The method according to claim 1, wherein said conductive layer comprises said particles, electron conductive fine powder and a polymer binder.
The electrostatic recording film according to the above.
記高分子結着剤との重量比が0.05/100〜20/100であるこ
とを特徴とする請求項２記載の静電記録フィルム。3. The electrostatic recording film according to claim 2, wherein the weight ratio of the particles to the electron-conductive fine powder and the polymer binder is 0.05 / 100 to 20/100. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21756788A JP2781565B2 (en) | 1988-08-31 | 1988-08-31 | Electrostatic recording film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21756788A JP2781565B2 (en) | 1988-08-31 | 1988-08-31 | Electrostatic recording film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0264647A JPH0264647A (en) | 1990-03-05 |
| JP2781565B2 true JP2781565B2 (en) | 1998-07-30 |
Family
ID=16706290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21756788A Expired - Fee Related JP2781565B2 (en) | 1988-08-31 | 1988-08-31 | Electrostatic recording film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2781565B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04134352A (en) * | 1990-05-16 | 1992-05-08 | Tomoegawa Paper Co Ltd | Conductive substrate and recording body using same |
| WO2004088430A1 (en) * | 1991-10-16 | 2004-10-14 | ＠ | Electrostatic information recording medium |
-
1988
- 1988-08-31 JP JP21756788A patent/JP2781565B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0264647A (en) | 1990-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |