JPH0256665B2 - - Google Patents
Info
- Publication number
- JPH0256665B2 JPH0256665B2 JP58238752A JP23875283A JPH0256665B2 JP H0256665 B2 JPH0256665 B2 JP H0256665B2 JP 58238752 A JP58238752 A JP 58238752A JP 23875283 A JP23875283 A JP 23875283A JP H0256665 B2 JPH0256665 B2 JP H0256665B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- polyester
- electrophotographic
- less
- weight
- 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 - Lifetime
Links
- 238000002834 transmittance Methods 0.000 claims description 5
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 229920006243 acrylic copolymer Polymers 0.000 claims description 3
- 229920006267 polyester film Polymers 0.000 description 15
- 229920000728 polyester Polymers 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 8
- 239000002216 antistatic agent Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002959 polymer blend Polymers 0.000 description 2
- MMINFSMURORWKH-UHFFFAOYSA-N 3,6-dioxabicyclo[6.2.2]dodeca-1(10),8,11-triene-2,7-dione Chemical group O=C1OCCOC(=O)C2=CC=C1C=C2 MMINFSMURORWKH-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- G03G7/0006—Cover layers for image-receiving members; Strippable coversheets
- G03G7/002—Organic components thereof
- G03G7/0026—Organic components thereof being macromolecular
- G03G7/004—Organic components thereof being macromolecular obtained by reactions only involving carbon-to-carbon unsaturated bonds
Description
〔発明の技術分野〕
本発明は、優れた透明性と易トナー接着性を有
すると共に制電性に優れた電子写真用フイルムに
関するものである。
〔従来技術とその問題点〕
従来の電子写真用フイルムは、一般にポリエス
テルフイルムを単独、あるいはポリエステルフイ
ルムの上に樹脂を塗布したものが使用されてい
る。しかし、この従来の電子写真フイルムは、ト
ナーの接着性や制電性がよくないため字がにじみ
やすかつたり、塵埃が付着しやすい欠点がある。
また、電子写真複写機で使用する場合には供給ト
レイからの重送が起りやすく、電子写真フイルム
の要求特性を十分有するとはいえなかつた。
〔発明の目的〕
本発明の目的は、トナーの接着性が良好でかつ
字のにじみがなく、さらに塵埃の付着や乾式電子
写真複写機で使用する場合に供給トレイからの重
送現象を起すことがないようにした電子写真用フ
イルムを提供せんとすることにある。
〔発明の構成〕
上記目的を達成する本発明の電子写真用フイル
ムは、表面固有抵抗値が1015Ω／□以下で、かつ
光線透過率が70％以上、さらに好ましくは75％以
上であるプラスチツクフイルムの少なくとも片面
に、厚さ1μ未満、さらに好ましくは0.8μ以下のア
クリル共重合体を積層してなるものを特徴とする
ものである。
本発明で使用するプラスチツクフイルムとは、
周知のプラスチツクからなるフイルムで、具体的
には、ポリエステル、ポリイミド、ポリサルフオ
ン、ポリエーテルサルフオン、ポリフエニレンサ
ルフアイド、ポリエーテルエーテルケトン、ポリ
カーボネート等を主体としたフイルムである。こ
れらのフイルムの中でポリエステルフイルムがフ
イルムの特性と価格のバランスの上で好ましい。
以下、ポリエステルフイルムを代表例として説
明する。
ポリエステルフイルムは、ポリエチレンテレフ
タレートおよびエチレンテレフタレート単位を主
たる繰返し構成単位とする共重合ポリエステル、
ならびにかかるポリエステルが主成分であるよう
なポリマーブレンドよりなる群から選ばれたポリ
エステルからなるフイルムが好ましい。上記共重
合体ポリエステルとしては、ポリエステルの酸成
分の80モル％以上をテレフタル酸成分が占め、グ
リコール成分の80モル％以上をエチレングリコー
ル成分が占めるものが好ましい。また上記ポリマ
ーブレンドとしては、前記ポリエステルが70重量
％以上を占め、他の重合体が30重量％未満のもの
が好ましい。
本発明に用いるポリエステルは、必要に応じて
安定剤、酸化防止剤、滑剤、紫外線吸収剤、その
他添加剤等を含有してもよい。
ポリエステルフイルムの厚みは特に指定しない
が、好ましくは通常25μ〜500μ、より好ましくは
ハンドリング性や搬送性から50〜200μとするの
がよい。
表面固有抵抗値が1015Ω／□以下のポリエステ
ルフイルムを得るには、種々の公知の方法が適用
できる。例えばポリエステルフイルムに静電防止
剤を塗布する方法、ポリエステルフイルムの表面
に金属あるいは（および）金属化合物の薄層を形
成する方法、ポリエステル原料の重合時に静電防
止剤を添加する方法、フイルム製膜時にポリエス
テル原料と静電防止剤を混ぜる方法などが適宜用
いられる。これらのうち製膜工程で一挙にできる
方法が最も好ましく、そのときの原料としてアル
キルベンゼンスルホン酸ナトリウムとポリアルキ
レングリコールを使用し、これらから重縮合を行
なつて得られらるポリエステルが好適である。
上記のような方法により得られたポリエステル
フイルムの表面固有抵抗値を1015Ω／□以下にす
ることは、本発明の電子写真用フイルムにおいて
重要である。ポリエステルフイルムの表面固有抵
抗値が1015Ω／□を越えると、乾式電子写真複写
機に使用する場合、供給トレイからの重送の発生
やゴミの付着を起しやすくなり、電子写真用フイ
ルムとしては適さないものとなる。このような表
面固有抵抗値として、より好ましい範囲は108〜
1014Ω／□である。
また、上記ポリエステルフイルムの光線透過率
は70％以上、好ましくは75％以上が必要である。
70％未満になると透明性が悪くなり、透光画像の
形成や第２原図用として適さなくなる。
本発明の電子写真用フイルムにおいて、上記ポ
リエステルフイルムに積層させるアクリル共重合
体としては、30〜95モル％の
[Technical Field of the Invention] The present invention relates to an electrophotographic film that has excellent transparency, easy toner adhesion, and excellent antistatic properties. [Prior Art and its Problems] Conventional electrophotographic films generally use a polyester film alone or a polyester film coated with a resin. However, this conventional electrophotographic film has drawbacks such as poor toner adhesion and antistatic properties, such as smearing of characters and easy adhesion of dust.
Further, when used in an electrophotographic copying machine, double feeding from the supply tray tends to occur, and it cannot be said that the film has sufficient characteristics required for electrophotographic film. [Object of the Invention] The object of the present invention is to provide a toner with good adhesion and no smearing of characters, and to prevent dust from adhering to the toner and double feeding from the supply tray when used in a dry type electrophotographic copying machine. It is an object of the present invention to provide an electrophotographic film free from defects. [Structure of the Invention] The electrophotographic film of the present invention which achieves the above object is a plastic having a surface resistivity of 10 15 Ω/□ or less and a light transmittance of 70% or more, more preferably 75% or more. It is characterized by laminating an acrylic copolymer with a thickness of less than 1 μm, more preferably 0.8 μm or less, on at least one side of the film. The plastic film used in the present invention is
It is a film made of well-known plastic, specifically, a film mainly made of polyester, polyimide, polysulfon, polyether sulfon, polyphenylene sulfide, polyether ether ketone, polycarbonate, etc. Among these films, polyester film is preferred in view of the balance between film properties and price. Hereinafter, polyester film will be explained as a representative example. Polyester film is made of polyethylene terephthalate and copolyester whose main repeating constituent units are ethylene terephthalate units.
Also preferred is a film made of a polyester selected from the group consisting of polymer blends in which such a polyester is the main component. The above-mentioned copolymer polyester is preferably one in which the terephthalic acid component accounts for 80 mol% or more of the acid component of the polyester, and the ethylene glycol component accounts for 80 mol% or more of the glycol component. The polymer blend is preferably one in which the polyester accounts for 70% by weight or more and the other polymers account for less than 30% by weight. The polyester used in the present invention may contain stabilizers, antioxidants, lubricants, ultraviolet absorbers, other additives, etc. as necessary. Although the thickness of the polyester film is not particularly specified, it is preferably usually 25 to 500 microns, more preferably 50 to 200 microns from the viewpoint of handling and transportability. Various known methods can be applied to obtain a polyester film having a surface resistivity of 10 15 Ω/□ or less. For example, a method of applying an antistatic agent to a polyester film, a method of forming a thin layer of metal or (and) a metal compound on the surface of a polyester film, a method of adding an antistatic agent during polymerization of polyester raw materials, a method of forming a film. Sometimes, a method of mixing a polyester raw material and an antistatic agent is used as appropriate. Among these methods, the method that can be performed all at once in the film forming step is most preferred, and polyester obtained by polycondensing sodium alkylbenzenesulfonate and polyalkylene glycol as raw materials is preferred. It is important in the electrophotographic film of the present invention that the surface resistivity of the polyester film obtained by the above method be 10 15 Ω/□ or less. If the surface resistivity value of polyester film exceeds 10 15 Ω/□, when used in a dry type electrophotographic copying machine, double feeding from the supply tray will easily occur and dust will adhere, making it difficult to use as an electrophotographic film. becomes unsuitable. A more preferable range for such a surface resistivity value is 10 8 ~
10 14 Ω/□. Further, the light transmittance of the polyester film is required to be 70% or more, preferably 75% or more.
When it is less than 70%, transparency deteriorates and it becomes unsuitable for forming transparent images or for second original drawings. In the electrophotographic film of the present invention, the acrylic copolymer to be laminated on the polyester film contains 30 to 95 mol%.
【式】および５〜70モル％の[Formula] and 5 to 70 mol%
【式】（但しＲは水素又はメチル
基、R1，R2は炭素数１〜４のアルキル基であり
R1≦R2を満足する）からなる、それぞれ１種以
上のアクリル系単量体80〜99.9モル％と、原子団
として、−COOH，−CONR4R5，−NR4R5，−OH，
[Formula] (where R is hydrogen or a methyl group, R 1 and R 2 are alkyl groups having 1 to 4 carbon atoms,
80 to 99.9 mol% of one or more acrylic monomers each satisfying R 1 ≦ R 2 and -COOH, -CONR 4 R 5 , -NR 4 R 5 , -OH as atomic groups. ，
以下、実施例に基づいて本発明の一実施態様を
説明する。
実施例1.比較例１〜２
ジメチルテレフタレート100重量％、エチレン
グリコール65重量％にエステル交換反応触媒を添
加した後、ドデシルベンゼンスルホン酸ナトリウ
ム１重量％と分子量4000のポリエチレングリコー
ルを１重量％添加し、重縮合を行なつて得られた
ポリエチレンテレフタレートを溶融押出して未延
伸フイルムを得た。
このフイルムを縦方向に延伸し、しかる後、そ
のフイルムの両面に固形分樹脂濃度が40％のメチ
ルメタアクリレート、エチルアクリレート、アク
リル酸共重合体（共重合組成、85：12：３モル
％）水性分散液7.5重量％、滑剤として炭酸カル
シウム0.2重量％、希釈剤として水を92.3重量％
のものを塗布して乾燥した後、直角方向に延伸
し、しかる後熱処理して、フイルム厚みが100μ
で塗膜厚みが0.4μ、表面固有抵抗値が３×1012
Ω／□、光線透過率が83％、熱収縮率0.7％の電
子写真用フイルムを得た。
このようにして得られた電子写真用フイルムを
ポリエステルフイルム単独のもの（比較例１）、
ポリエステルフイルム上に、エステル樹脂と帯電
防止剤を塗布したもの（比較例２）と比較すると
次の表の通りである。
乾式電子写真複写機はキヤノンPC−10（キヤノ
ン販売株式会社製）を使用した。
Hereinafter, one embodiment of the present invention will be described based on Examples. Example 1. Comparative Examples 1 to 2 After adding a transesterification reaction catalyst to 100% by weight of dimethyl terephthalate and 65% by weight of ethylene glycol, 1% by weight of sodium dodecylbenzenesulfonate and 1% by weight of polyethylene glycol having a molecular weight of 4000 were added. Polyethylene terephthalate obtained by polycondensation was melt-extruded to obtain an unstretched film. This film is stretched in the longitudinal direction, and then a methyl methacrylate, ethyl acrylate, and acrylic acid copolymer (copolymer composition, 85:12:3 mol %) with a solid resin concentration of 40% is coated on both sides of the film. 7.5% by weight of aqueous dispersion, 0.2% by weight of calcium carbonate as lubricant, 92.3% by weight of water as diluent
After coating and drying, the film is stretched at right angles and then heat-treated to obtain a film with a thickness of 100μ.
The coating thickness is 0.4μ and the surface resistivity is 3×10 12
An electrophotographic film having Ω/□, a light transmittance of 83%, and a heat shrinkage rate of 0.7% was obtained. The electrophotographic film thus obtained was a polyester film alone (Comparative Example 1),
The following table shows a comparison with a polyester film coated with an ester resin and an antistatic agent (Comparative Example 2). The dry type electrophotographic copying machine used was Canon PC-10 (manufactured by Canon Sales Co., Ltd.).
上述したように本発明の電子写真用フイルム
は、表面固有抵抗値が1015Ω／□以下で、かつ光
線透過率が70％以上であるプラスチツクフイルム
の少なくとも片面に、厚さ1μ未満のアクリル共
重合体を積層する構成としたので、次のような優
れた効果を得ることができる。
(イ) 乾式電子写真複写機で複写したとき、トナー
の密着性が良好で、字のにじみが発生しない。
(ロ) 制電性に優れるため、静電気による塵埃の付
着現象がない。
(ハ) 乾式電子写真複写機で使用する場合、供給ト
レイからの重送現象を起すことがない。
(ニ) 透明性が良好であり、透光画像の形成や再複
製に適している。
(ホ) 基材フイルムが静電防止性を有するため製品
の表面固有抵抗値が安定していると共に、持続
性に優れている。
As described above, the electrophotographic film of the present invention has a plastic film having a surface resistivity of 10 15 Ω/□ or less and a light transmittance of 70% or more, and an acrylic film having a thickness of less than 1 μm on at least one side of the plastic film. Since the structure is such that the polymers are laminated, the following excellent effects can be obtained. (b) When copied using a dry electrophotographic copying machine, the adhesion of the toner is good and the characters do not bleed. (b) Since it has excellent antistatic properties, there is no phenomenon of dust adhesion caused by static electricity. (c) When used in a dry type electrophotographic copying machine, double feeding from the supply tray does not occur. (d) It has good transparency and is suitable for forming and reproducing transparent images. (e) Since the base film has antistatic properties, the product has a stable surface resistivity value and is excellent in durability.
Claims (1)
線透過率が70％以上であるプラスチツクフイルム
の少なくとも片面に、厚さ1μ未満のアクリル共
重合体を積層してなる電子写真用フイルム。1. An electrophotographic film comprising an acrylic copolymer having a thickness of less than 1 μm laminated on at least one side of a plastic film having a surface resistivity of 10 15 Ω/□ or less and a light transmittance of 70% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23875283A JPS60130749A (en) | 1983-12-20 | 1983-12-20 | Film for electrophotography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23875283A JPS60130749A (en) | 1983-12-20 | 1983-12-20 | Film for electrophotography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60130749A JPS60130749A (en) | 1985-07-12 |
| JPH0256665B2 true JPH0256665B2 (en) | 1990-11-30 |
Family
ID=17034730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23875283A Granted JPS60130749A (en) | 1983-12-20 | 1983-12-20 | Film for electrophotography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60130749A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9011028B2 (en) | 2009-03-31 | 2015-04-21 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9132682B2 (en) | 2009-03-31 | 2015-09-15 | Brother Kogyo Kabushiki Kaisha | Tape unit and tape cassette |
| US9352600B2 (en) | 2009-12-16 | 2016-05-31 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9409425B2 (en) | 2009-03-31 | 2016-08-09 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9427988B2 (en) | 2009-03-31 | 2016-08-30 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9493016B2 (en) | 2008-12-25 | 2016-11-15 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9573401B2 (en) | 2009-06-30 | 2017-02-21 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5134734A (en) * | 1974-09-19 | 1976-03-24 | Suwa Seikosha Kk | |
| JPS6052981A (en) * | 1983-09-02 | 1985-03-26 | Dainippon Printing Co Ltd | Transparent slip sheet material for cassette tape |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6424299A (en) * | 1987-07-21 | 1989-01-26 | H A N Kk | Display device utilizing pulse light source |
-
1983
- 1983-12-20 JP JP23875283A patent/JPS60130749A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5134734A (en) * | 1974-09-19 | 1976-03-24 | Suwa Seikosha Kk | |
| JPS6052981A (en) * | 1983-09-02 | 1985-03-26 | Dainippon Printing Co Ltd | Transparent slip sheet material for cassette tape |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9493016B2 (en) | 2008-12-25 | 2016-11-15 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9011028B2 (en) | 2009-03-31 | 2015-04-21 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9132682B2 (en) | 2009-03-31 | 2015-09-15 | Brother Kogyo Kabushiki Kaisha | Tape unit and tape cassette |
| US9346296B2 (en) | 2009-03-31 | 2016-05-24 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9409425B2 (en) | 2009-03-31 | 2016-08-09 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9427988B2 (en) | 2009-03-31 | 2016-08-30 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9573401B2 (en) | 2009-06-30 | 2017-02-21 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| US9352600B2 (en) | 2009-12-16 | 2016-05-31 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60130749A (en) | 1985-07-12 |
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