JPS6250814B2 - - Google Patents
Info
- Publication number
- JPS6250814B2 JPS6250814B2 JP6689983A JP6689983A JPS6250814B2 JP S6250814 B2 JPS6250814 B2 JP S6250814B2 JP 6689983 A JP6689983 A JP 6689983A JP 6689983 A JP6689983 A JP 6689983A JP S6250814 B2 JPS6250814 B2 JP S6250814B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- metal
- sheet
- layer
- aluminum
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 28
- 238000010030 laminating Methods 0.000 claims 1
- 239000000123 paper Substances 0.000 description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/006—Substrates for image-receiving members; Image-receiving members comprising only one layer
- G03G7/0066—Inorganic components thereof
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/0053—Intermediate layers for image-receiving members
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/0086—Back layers for image-receiving members; Strippable backsheets
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
オフイス複写機やフアクシミリの普及に伴い、
機密にすべき文書あるいは著作権が与えられた記
録の無断複写を防止するための実際的な手段を提
供することが強く望まれ、既にいくつかの方法が
提案されている。本発明者等も文書用シートに金
属を蒸着、塗工、含浸、貼り合わせ等して処理す
ると共に、文書シート中の金属を複写中文書の走
査露光プロセスに合わせて検出し、応答する手段
を設けた装置を提案している。
この発明は本発明者等が提案した前記の機密文
書複写装置において、一旦複写又は印刷等の手段
で作成された情報の複写を防止するために使用す
ることのできるシートの改良に関するものであ
る。
従来金属を含有するシートとしては、例えば放
電記録用のアルミ蒸着紙等が知られている。これ
は第１図に断面図を示したように基紙１ａの上に
カーボン層１ｂ、アルミ蒸着層（100〜600Å）１
ｃ及び白色導電層１ｄを設けてなるものである。
このような金属含有シートは電子写真複写機に通
紙してコピーを得ようとしても抵抗が低く電荷が
逃げ、転写を行うことができず、更に紙詰りが多
発して電子写真用転写シートとして使用は不可能
であり、従来この目的に適うシートは存在しなか
つた。また本発明者らは、すでに金属を含有する
電子写真転写シートの発明について特許出願して
いるが（特願昭57−14682号）、この発明は更にこ
れを改良することを目的とするものである。
すなわち、本発明は近接検出器で検出可能であ
り、かつ印刷用紙としてだけでなく、電子写真用
転写シートとしても充分な電子写真複写機通紙性
を有し、あらゆる手段で原稿を作成できるシート
を提供することを目的とする。
先に本発明者が出願した構成のシート（特願昭
57−146823号）を通常の方法により製造すると、
シートのこわさがCD（横方向）で150cm3／100を
超えるか、および／又はMD（縦方向）が270
cm3／100を超えるために、これを複写機に用いる
と複写機内部で紙詰まりを発生する場合があつ
た。
本発明は金属含有シートの紙詰まりの発生原因
がシートのこわさにあり、しかもこわさの程度の
レベルに限界点があるという発見に基づいてなさ
れたものである。すなわちこの限界点はJIS Ｐ−
8143で規定されるクラークこわさCDが150cm3／
100、および／またはMDが270cm3／100のところ
にあることを見い出した。
従つて本発明によれば、近接検出器により検出
可能な金属層の表裏両面に紙がサンドウイツチ状
に積層されて成る電子写真用金属含有シートにお
いて、該シートのJIS Ｐ−8143で規定されるクラ
ークこわさ（横方向）が150cm3／100以下および／
またはクラークこわさ（縦方向）が270cm3／100以
下であることを特徴とする金属含有シートにより
前記の目的を達成したものである。本発明シート
の構成は、例えば第２図に示すように、真中の金
属薄膜２ｂを挟むシート２ａ，２ｃの３層からな
るものである。また、クラークこわさを上記の規
定値以下とする方法としては、例えば金属層の厚
さを薄くすること、柔軟度の低い接着剤を使用す
ること、第２図の２ａおよび／又は２ｃのシート
として高灰分含有紙を使用すること、こわさの低
いプラスチツクフイルムを使用すること、金属層
として金属粉体を使用すること、金属層を蒸着す
ること等種々の方法がある。本発明で使用できる
近接検出器により検知できる金属としては、アル
ミニウム、鉄、銅、亜鉛、カドミウム、銀、ニツ
ケル等が挙げられるが、製造上からアルミニウム
又は鉄が最も好ましい。
近接検出器はうず電流損による高周波発振回路
の発振コイルのインピーダンス変化を利用してあ
らゆる金属を非接触状態で検出できるものであ
り、内部構造等については公知であるので詳細は
省略する。
次に実施例及び比較例を挙げて本発明の金属含
有シートを説明する。
実施例 １
LBKP（広葉樹晒クラフトパルプ）を水度
（C.S.F.）480mlになるよう叩解し、抄造後灰分が
25重量％になるように長網抄紙機にて坪量35ｇ／
m2の用紙を抄造した。この用紙の片方の面に接着
剤を塗布し、厚さ７μのアルミニウム薄層を貼付
し、アルミ薄層の上に更に接着剤を塗布して、上
記の坪量35ｇ／m2用紙を貼付して三層構造の金属
含有紙を得た。
実施例 ２
市販王子製紙上質紙OK上質紙52.3ｇ／m3の片
方の面に、厚さ５μのアルミニウム薄膜を約２mm
角に切つた切片を接着剤中に60重量％以上混合し
たものを塗布し、更にその上に同上のOK上質紙
52.3ｇ／m2用紙を貼付して金属含有紙を得た。
比較例 １
市販王子製紙上質紙OK上質紙52.3ｇ／m2の片
方の面に接着剤を塗布し、その上に厚さ20μの鉄
薄膜を貼付し、その上に接着剤を塗布し、更にそ
の上に上記OK上質紙52.3ｇ／m2を貼付して比較
用金属含有シートを得た。
比較例 ２
市販山陽国策パルプ上質紙銀環52.3ｇ／m2の片
方の面に、アルミニウム粉末（直径約0.1〜0.5
mm）を接着剤中に60重量％以上混合したものを塗
布し、更にその上に上記の銀環52.3ｇ／m2を貼付
して比較用金属含有シートを得た。
比較例 ３
LBKP（広葉樹晒クラフトパルプ）80重量％
NBKP（針葉樹晒クラフトパルプ）20重量％を混
合し、水度（C.S.F.）460mlになるよう叩解
し、タルク又はクレーを添加せずに長網抄紙機に
て坪量40ｇ／m2の用紙を抄造した。この用紙に実
施例１と同様にしてアルミニウムを貼付し、比較
用金属含有紙を得た。
実施例１および２及び比較例１〜３で得た金属
含有シートについて、クラークこわさの測定、近
接検出器による検出性及び３種の複写機による走
行性の測定を行つた結果を表１に示す。
【表】[Detailed Description of the Invention] With the spread of office copiers and facsimile machines,
It would be highly desirable to provide a practical means to prevent unauthorized copying of confidential documents or copyrighted records, and several methods have already been proposed. The present inventors have also developed a means for processing document sheets by vapor-depositing, coating, impregnating, pasting, etc. with metals, and detecting and responding to metals in document sheets in accordance with the scanning exposure process of documents being copied. We are proposing a device equipped with The present invention relates to an improvement of a sheet that can be used in the above-mentioned confidential document copying apparatus proposed by the present inventors to prevent copying of information once created by means such as copying or printing. 2. Description of the Related Art Conventionally, metal-containing sheets include, for example, aluminum vapor-deposited paper for discharge recording. As shown in the cross-sectional view in Figure 1, this consists of a base paper 1a, a carbon layer 1b, an aluminum evaporated layer (100 to 600 Å) 1
c and a white conductive layer 1d.
Even if you try to make a copy by passing such a metal-containing sheet through an electrophotographic copying machine, the resistance is low and the charge escapes, making it impossible to transfer, and the paper jams occur frequently, making it difficult to use as an electrophotographic transfer sheet. This is impossible, and hitherto there has been no sheet suitable for this purpose. Furthermore, the present inventors have already filed a patent application for the invention of an electrophotographic transfer sheet containing metal (Japanese Patent Application No. 14682/1982), but this invention aims to further improve this. be. That is, the present invention provides a sheet that can be detected by a proximity detector, has sufficient passability for an electrophotographic copying machine not only as printing paper, but also as a transfer sheet for electrophotography, and that allows originals to be created by any means. The purpose is to provide A sheet of the configuration previously applied by the present inventor (patent application
57-146823) by a normal method,
The stiffness of the sheet exceeds 150 cm 3 /100 in CD (horizontal direction) and/or 270 in MD (longitudinal direction)
cm 3 /100, so when this was used in a copying machine, paper jams sometimes occurred inside the copying machine. The present invention was made based on the discovery that the cause of paper jams in metal-containing sheets is the stiffness of the sheet, and that there is a limit to the level of stiffness. In other words, this breaking point is JIS P-
Clark stiffness CD specified by 8143 is 150cm 3 /
100 and/or MD at 270 cm 3 /100. Therefore, according to the present invention, in a metal-containing sheet for electrophotography in which paper is laminated in a sandwich shape on both the front and back surfaces of a metal layer that can be detected by a proximity detector, the sheet has a metal-containing sheet that can be detected by a proximity detector. Stiffness (lateral direction) is 150 cm 3 /100 or less and /
Alternatively, the above object is achieved by a metal-containing sheet characterized by a Clark stiffness (longitudinal direction) of 270 cm 3 /100 or less. The structure of the sheet of the present invention is, for example, as shown in FIG. 2, consisting of three layers of sheets 2a and 2c sandwiching a metal thin film 2b in the middle. In addition, methods for keeping Clark stiffness below the specified value above include, for example, reducing the thickness of the metal layer, using an adhesive with low flexibility, and using sheets 2a and/or 2c in Figure 2. There are various methods, such as using high ash content paper, using a plastic film with low stiffness, using metal powder as the metal layer, and vapor depositing the metal layer. Examples of metals that can be detected by the proximity detector that can be used in the present invention include aluminum, iron, copper, zinc, cadmium, silver, and nickel, but aluminum or iron is most preferred from the viewpoint of manufacturing. The proximity detector is capable of detecting any metal in a non-contact state by utilizing changes in the impedance of the oscillation coil of the high frequency oscillation circuit due to eddy current loss, and since its internal structure is well known, details will be omitted. Next, the metal-containing sheet of the present invention will be explained with reference to Examples and Comparative Examples. Example 1 LBKP (hardwood bleached kraft pulp) was beaten to a water content (CSF) of 480ml, and the ash content was reduced after papermaking.
35g basis weight on a Fourdrinier paper machine to make 25% by weight
Paper of m2 was made. Apply adhesive to one side of this paper, paste a thin aluminum layer with a thickness of 7μ, apply adhesive on top of the aluminum thin layer, and paste the above paper with a basis weight of 35g/ m2. A metal-containing paper with a three-layer structure was obtained. Example 2 Approximately 2 mm of aluminum thin film with a thickness of 5 μ is applied to one side of commercially available Oji Paper fine-quality paper OK high-quality paper 52.3 g/m 3
Apply a mixture of at least 60% by weight of adhesive to the corner cut pieces, and then apply the same OK high-quality paper on top.
A metal-containing paper was obtained by pasting 52.3 g/m 2 paper. Comparative Example 1 Adhesive was applied to one side of commercially available Oji Paper high-quality paper OK high-quality paper 52.3g/ m2 , a thin iron film with a thickness of 20μ was pasted on it, adhesive was applied on top of it, and A metal-containing sheet for comparison was obtained by pasting 52.3 g/m 2 of the above-mentioned OK high-quality paper thereon. Comparative Example 2 Aluminum powder (diameter approximately 0.1 to 0.5
A metal-containing sheet for comparison was obtained by coating a mixture of 60% by weight or more of (mm) in an adhesive, and then attaching the above silver ring (52.3 g/m 2 ) thereon. Comparative example 3 LBKP (bleached hardwood kraft pulp) 80% by weight
Mix 20% by weight of NBKP (softwood bleached kraft pulp), beat to a water content (CSF) of 460ml, and make paper with a basis weight of 40g/ m2 using a Fourdrinier paper machine without adding talc or clay. did. Aluminum was attached to this paper in the same manner as in Example 1 to obtain metal-containing paper for comparison. The metal-containing sheets obtained in Examples 1 and 2 and Comparative Examples 1 to 3 were measured for Clark stiffness, detectability using a proximity detector, and runnability using three types of copying machines. The results are shown in Table 1. . 【table】
第１図はアルミ蒸着紙の断面図、第２図は本発
明の金属含有シート例の断面図である。
図中符号：１ａ……基紙、１ｂ……カーボン
層、１ｃ……アルミ蒸着層、１ｄ……白色導電
層、２ａ，２ｃ……転写媒体、２ｂ……金属含有
層。
FIG. 1 is a sectional view of an aluminum vapor-deposited paper, and FIG. 2 is a sectional view of an example of a metal-containing sheet of the present invention. Symbols in the figure: 1a... Base paper, 1b... Carbon layer, 1c... Aluminum vapor deposited layer, 1d... White conductive layer, 2a, 2c... Transfer medium, 2b... Metal-containing layer.
Claims (1)
面に紙がサンドウイツチ状に積層されて成る電子
写真用金属含有シートにおいて、該シートのJIS
Ｐ−8143で規定されるクラークこわさ（横方向）
が150cm3／100以下および／またはクラークこわさ
（縦方向）が270cm3／100以下であることを特徴と
する金属含有シート。1. In metal-containing sheets for electrophotography, which are made by laminating paper in a sandwich-like manner on both the front and back sides of a metal layer that can be detected by a proximity detector, the JIS
Clark stiffness (lateral direction) specified by P-8143
150 cm 3 /100 or less and/or Clark stiffness (longitudinal direction) of 270 cm 3 /100 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6689983A JPS59193466A (en) | 1983-04-18 | 1983-04-18 | Metal containing sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6689983A JPS59193466A (en) | 1983-04-18 | 1983-04-18 | Metal containing sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59193466A JPS59193466A (en) | 1984-11-02 |
| JPS6250814B2 true JPS6250814B2 (en) | 1987-10-27 |
Family
ID=13329237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6689983A Granted JPS59193466A (en) | 1983-04-18 | 1983-04-18 | Metal containing sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59193466A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH031711U (en) * | 1989-05-31 | 1991-01-09 |
-
1983
- 1983-04-18 JP JP6689983A patent/JPS59193466A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH031711U (en) * | 1989-05-31 | 1991-01-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59193466A (en) | 1984-11-02 |
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