JPS6147224A - Method for transferring pattern to inner surface of resin molded part - Google Patents
Method for transferring pattern to inner surface of resin molded partInfo
- Publication number
- JPS6147224A JPS6147224A JP16800784A JP16800784A JPS6147224A JP S6147224 A JPS6147224 A JP S6147224A JP 16800784 A JP16800784 A JP 16800784A JP 16800784 A JP16800784 A JP 16800784A JP S6147224 A JPS6147224 A JP S6147224A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- female mold
- pattern
- resin
- transfer sheet
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14827—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using a transfer foil detachable from the insert
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、樹脂成型品の内面に、任意の模様全転写する
方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for completely transferring an arbitrary pattern onto the inner surface of a resin molded product.
〈従来の技術〉
樹脂成型品の内面に、退色、消失等の防止を図りつつ、
任意の模様全形成する方法として、特公昭４０−１２９
８８号公報に開示され九模様又は文字を印刷し７′ｃ！
ｌ膜を持つプラスチック成型品の製造方法がある。これ
は、模様や文字を印刷し交熱可塑性プラスチックの膜に
静電荷を与えて、金型空洞面の物置する部位に密接かつ
溶固に貼着固定し、溶融しｔプラスチック材料を注入し
て模様や文字をつけｔプラスチック成型品′ｔ″得る方
法である。<Conventional technology> While trying to prevent fading and loss of color on the inner surface of resin molded products,
As a method for forming the entire arbitrary pattern,
It is disclosed in Publication No. 88, and nine patterns or letters are printed and 7'c!
There is a method for manufacturing plastic molded products with l membrane. This is done by printing patterns and letters, giving an electrostatic charge to the thermoplastic plastic film, fixing it closely and solidly on the storage area of the mold cavity surface, melting it, and injecting the plastic material. This is a method of obtaining plastic molded products by adding patterns and letters.
〈発明が解決しようとする問題点〉
叙上の方法は、模様等が印刷された！ｌ！（以下、単に
模様膜という。）に静電荷を与えて、該模様Ｍ”ｅ金型
空洞面の所期位置に貼着固定するものである。成型対象
が、例えば容器である場合、その内面に模様を形成する
には、成型用金型の雄型の成型面にＩＩＵ記模様ｐａ金
貼着すればよいのであるが、貼着に先立ち毎回模様膜に
静電荷を与えなければならず作業が煩雑であり、また、
容器内面の略全」に亘って模様を付ける場合では、模様
膜を予め雄型成型部に保合するように成型しておかなけ
ればほとんど貼着困難になるという問題があった。<Problem to be solved by the invention> In the method described above, patterns etc. were printed! l! (hereinafter simply referred to as a pattern film), the pattern M"e is attached and fixed at a desired position on the cavity surface of the mold by applying an electrostatic charge to it. When the object to be molded is, for example, a container, its inner surface To form a pattern on the mold, it is sufficient to paste IIU pattern pa gold on the molding surface of the male mold, but each time before pasting, it is necessary to apply an electrostatic charge to the pattern film, making the work difficult. is complicated, and
When applying a pattern to substantially the entire inner surface of the container, there is a problem in that it is almost difficult to attach the pattern unless the pattern film is molded in advance so as to fit onto the male molded part.
本発明は、斯かる問題に鑑み、成型品の内面に消失し難
い模様を付けるに際し、模様付作業が簡単容易でかつそ
の内面の全域に亘って模様を付ける場合でも容易に行え
る樹脂成型品内面への模様付方法を提供することを目的
とする。In view of such problems, the present invention has been developed to provide a resin molded product inner surface that is simple and easy to apply a pattern to and can be easily applied even when the pattern is applied over the entire area of the inner surface of the molded product. The purpose is to provide a method for adding patterns to.
く問題点を解決する几めの手段〉 上記目的を達成するｔめに、次の手段ｔ″講じる。Elaborate means to solve problems In order to achieve the above objective, the following measures will be taken.
すなわち、伸びの優れた高弾性高分子で形成された剥離
ｙ −）の上に任意の模様が形成゛された転写シートを
その模様面が樹脂成型用金型の雌型の合せ面側となるよ
うに雌型の合せ面上に配し、該転写シートｔＨ型の合せ
面上にて固定すると共に樹脂成型用金型の雄ｍを雌型側
に移動させ、雄型成ＩＪ１部表面に転写シートを当接さ
せ、更に雄型を移動させつつ雄ｆｆ１ｌ或ｇ４ｍｏ略全
面に転写シートを拡張添着させて型締めし、その後雌型
より溶融樹脂を成型キャビティに注入し、得られ几樹脂
成益品の同面の剥離シート全除去して前記成型品の同面
に模様全転写するのである。In other words, a transfer sheet on which a desired pattern is formed on a peelable material (y-) made of a highly elastic polymer with excellent elongation is placed so that the pattern surface is on the mating surface side of the female die of the resin mold. The transfer sheet t is placed on the mating surface of the female mold as shown in FIG. The sheets are brought into contact with each other, and while the male mold is moved, the transfer sheet is spread over the entire surface of the male ff1l or g4mo, and the mold is clamped.Then, molten resin is injected into the molding cavity from the female mold, and the resulting resin is obtained. The entire release sheet on the same side of the product is removed and the entire pattern is transferred to the same side of the molded product.
く作 用〉
叙上の手段によれば、転写シートの剥離シートを伸びの
優れた高弾性高分子で形成したから、転写シー）１その
模様面が雌型の合せ面側となるようにして雌型合せ面上
に配し、該転写シート金雌型の合せ面上にて固定すると
共にｍｍ’を雌型側へ後動すれば、雄型の成型部に当接
した転写シートは、雄型の雌型への移動に伴い拡張し、
型締めするときには雄型の成型部の略全面に添着する。According to the method described above, since the release sheet of the transfer sheet is formed of a highly elastic polymer with excellent elongation, the pattern surface of the transfer sheet (1) is placed on the mating surface side of the female mold. By placing the transfer sheet on the mating surface of the female mold and fixing it on the mating surface of the female mold and moving mm' backward toward the female mold, the transfer sheet that has come into contact with the molding part of the male mold will be Expands as the type moves to the female type,
When clamping the mold, it is attached to almost the entire surface of the molded part of the male mold.
斯かる状態にて雄型と雌型とを型締めし、成型キャビテ
ィに雌型側より溶融樹脂を注入すれば、内表面の全面に
転写シートが破着し九樹脂成型品が極めて容易に得られ
る。而して、成型品の最内面の剥離シートラ除去すれば
、内面に模様が転写され几樹脂成里品が得られる。If the male and female molds are clamped together in this state and molten resin is injected into the molding cavity from the female mold side, the transfer sheet will be ruptured on the entire inner surface and a nine-resin molded product can be obtained very easily. It will be done. By removing the release sheet on the innermost surface of the molded product, the pattern is transferred to the inner surface and a solid resin product is obtained.
＜５Ｊ！施例〉 次に本発明の夾施例を図面を参照して説明する。<5J! Example> Next, embodiments of the present invention will be described with reference to the drawings.
第５図は、本発明を適用して得られた金魚等の模様〔２
］が内面に転写された樹脂戊型容ｌ？！！（１）を示す
。Figure 5 shows the pattern of goldfish etc. [2] obtained by applying the present invention.
] is transferred to the inner surface of the resin shell. ! ! (1) is shown.
前記模様（２１は、第１因に示した成ｍ装置【３１によ
り、容易に容器内面に転写される。゛
該成型装置（３］は、樹脂成型用金型の雌型（５）が取
り付けられ九固定側取付板（４）と、該固定側取付板（
４）の周縁に立設され九複数本のコラム（６）と、該コ
ラム（６）に摺動自在で、前記雌型（５）と対向して雄
型（８）が設けられ、かつａｍめシリンダのシリンダロ
ッド（９）が連結された可動側取付板（７）と、該可動
側取付板（７）と前記固定側取付板（４）との間に配置
され、コラム（６］に摺動自在とされ元押え枠αｑとか
ら溝底されている。前記押え枠αＯと可動側取付板（７
）との間には、弾発状に弾性部材０がコラム（６）に遊
挿されて介装されており、押え枠（ＩＱは、可動側取付
板（７）との所定間隔から離反するのを防止するための
係止部材口により可動側取付板（７）に連結されている
。The pattern (21) is easily transferred to the inner surface of the container by the molding device [31] shown in the first factor. 9 fixed side mounting plate (4) and the fixed side mounting plate (
4), a plurality of nine columns (6) erected on the periphery of the am It is arranged between a movable side mounting plate (7) to which the cylinder rod (9) of the female cylinder is connected, and the movable side mounting plate (7) and the fixed side mounting plate (4). It is slidable and has a groove bottom from the original presser frame αq.The presser frame αO and the movable side mounting plate (7
), an elastic member 0 is loosely inserted into the column (6) in a resilient manner, and the presser frame (IQ) is separated from a predetermined distance from the movable mounting plate (7). The movable side mounting plate (7) is connected to the movable side mounting plate (7) by a locking member opening for preventing the above.
該装置（３）ヲ用いて、模様の容器内面への転写方法を
以下に説明する。A method of transferring a pattern onto the inner surface of a container using the device (3) will be described below.
先ず、転写するための所期の模様が形成され比転写シー
トについて詳述する。First, the specific transfer sheet on which the desired pattern for transfer is formed will be described in detail.
転写シート０は、第２図の如く、剥離シートσ４の上面
にＭｆｆｉ剤暦−を介して樹脂層αｅを設け、その上に
模様１１７）を形成し、更に模様ａ７）ヲ含んだ樹脂層
σｅの全面に接着剤層（２）を形成したものである。As shown in FIG. 2, the transfer sheet 0 has a resin layer αe provided on the upper surface of the release sheet σ4 via an Mffi agent, a pattern 117) formed thereon, and a resin layer σe containing the pattern a7). An adhesive layer (2) is formed on the entire surface.
前記樹脂層αＧは、転写後の模様の摩滅、消失の防止を
図るための保護膜として作用するものであり、場合によ
っては省略することができる。The resin layer αG acts as a protective film to prevent the pattern from being worn away or disappearing after transfer, and may be omitted in some cases.
この場合、剥離シー） （１４１の材質は、伸びの侵れ
た高弾性高分子を用い、例えば、サーモヲヌチックや熱
可塑性ウレタンゴム等の熱可塑性エラストマーを挙げる
ことができる。In this case, the material for the release sheet 141 is a highly elastic polymer with reduced elongation, such as thermoplastic elastomers such as thermo-onutic and thermoplastic urethane rubber.
前記樹脂ＭσＧの材質としては、アμキト樹脂、フェノ
−ｙ樹脂、ビニル系樹脂、エポキシ系樹脂、アクリｚｓ
ｚ系樹脂等を例示できる。Materials for the resin MσG include acrylic resin, pheno-y resin, vinyl resin, epoxy resin, and acrylic resin.
Examples include z-based resins.
樹脂層μｓの上面に形成される模様ａりは、通常のプラ
スチック用インキ、塗判ヲ用いて、印刷、描画、塗装等
により形成される。転写シート上での模様な、後述する
ように、雄型（８）による該転写シートの拡張による変
形を考ばして決定することが肝要である。もつとも、多
少輪郭が流れてもよいような模様、例えば、木目や石材
模様では、図柄の変形をそれほど考慮しなくてもよく好
適である。The pattern a formed on the upper surface of the resin layer μs is formed by printing, drawing, painting, etc. using ordinary plastic ink and coating. It is important to determine the pattern on the transfer sheet by considering the deformation caused by the expansion of the transfer sheet by the male die (8), as will be described later. However, in the case of a pattern in which the outline may flow somewhat, such as a wood grain pattern or a stone pattern, it is preferable that the deformation of the pattern does not need to be considered so much.
前記ｉ２ｉ＋看剤ＮＪａ８１は、アクリル系樹脂、ビニ
ル系樹脂、ポリアミド系樹脂、フェノ−）ｖ糸回脂等金
例示でき、模様を転写する成型容器の樹脂材質と溶着性
の良好なものｔ適宜選択する。The i2i+ agent NJa81 may be selected from metals such as acrylic resin, vinyl resin, polyamide resin, phenol resin, etc., and which has good weldability with the resin material of the molded container to which the pattern is to be transferred. do.
以上説明した転写ジートロは、雌型（５３の合せ面上に
、その模様面側（接着剤層側）全下側として装置し、そ
の後雄型（８）全型締めすべく可動側取付板（７）を固
定側（雌型側）へ移動する。The transfer Zitro described above is installed on the mating surface of the female mold (53) with the pattern side (adhesive layer side) completely under the male mold (8), and then the movable side mounting plate ( 7) Move to the fixed side (female mold side).
可動側取付板（７］の移動に伴い、該取付板（７）と弾
性部甘口及び係上部材口によって連結された押え枠Ｃｌ
Ｃｌも固定側へ移動し、雌ｍ（５］の合せ面に数置され
−ｆｃ転写シート０と当接する。As the movable mounting plate (7) moves, the holding frame Cl connected to the mounting plate (7) by the elastic part sweet mouth and the engaging member mouth
Cl also moves to the fixed side and is placed several times on the mating surface of the female m (5) and comes into contact with the -fc transfer sheet 0.
更に、可動側取付板（７）全移動させると、押え栓αＧ
は弾性部材Ｕの弾性によって押圧力を漸次増大させつつ
転写シー）Ｃ１３’ｋｆｉ型合せコ上にて押圧固定する
。最終的には、可動側取付板（７）に取り付けられ几雄
型（８）は、押え枠αａに開設され次挿通口α９七通り
、雌型（５］と所定位置関係を保って型締めされる。Furthermore, when the movable side mounting plate (7) is fully moved, the presser plug αG
is pressed and fixed on the transfer sheet (C13'kfi type mating plate) while gradually increasing the pressing force by the elasticity of the elastic member U. Finally, the male die (8) is attached to the movable mounting plate (7), and the male die (8) is opened in the presser frame αa, and the next insertion opening α9 is opened in seven ways, and the female die (5) is clamped while maintaining a predetermined positional relationship. be done.
このとき、雌型（５）の合せ面に開設された成型凹部圓
のｉａ Ｏｃ７！１１上の転写シート０は、先ず雄型（
８］の成型凸部の先端に幽接し、更に雄ｍ（８）の移動
に伴い、前記成型凸部■の略全面に拡張、添着する。At this time, the transfer sheet 0 on the ia Oc7!
8], and as the male m (8) moves, it expands and attaches to substantially the entire surface of the molded convex part (2).
而して、雌型（５）に開設された樹脂注入口のより溶融
樹脂を、雌型成型凹部■と雄型成型凸部■とによって形
成された成型キャビティ（至）内に注入すれば、成型工
程と転写シートの成型容器内面への溶着工程とが同時に
達成され、転写シートが内面に溶着一体化され几成型容
器が得られる。Then, if the molten resin is injected from the resin injection port opened in the female mold (5) into the mold cavity (to) formed by the female mold mold concave part ■ and the male mold mold convex part ■, The molding process and the welding process of the transfer sheet to the inner surface of the molded container are accomplished simultaneously, and the transfer sheet is integrally welded to the inner surface of the molded container, resulting in a compactly molded container.
前記溶融樹脂としては、ｒｙ、型容器の要求される特性
に応じて、ビニル系樹脂、ポリエチレン、ポリプロピレ
ン、スチレン系樹脂、ポリアミド、フェノ−／Ｉ／樹脂
等の合成樹脂の内から適宜選択される。The molten resin is appropriately selected from synthetic resins such as vinyl resins, polyethylene, polypropylene, styrene resins, polyamides, and phenol/I/resins, depending on the required characteristics of the mold container. .
その後、可動側取付板（７）全後退させ、ｒｔ、型容器
を取り出した後、容器内面の剥離シート全除去丁れば、
内面に所望の模様が転写された樹脂底型容器が得られる
。尚、成型容器を形成する樹脂として、透明のもの全使
用すれば、容器中に各血液体金満したとき、容器外面か
ら模様金兄れば、屈折によＶ模様が様々に変化して見え
興趣をそそる。After that, move the movable mounting plate (7) completely backwards, take out the molded container, and remove all the release sheets on the inside of the container.
A resin-bottomed container with a desired pattern transferred onto the inner surface is obtained. In addition, if all transparent resins are used to form the molded container, when the container is filled with blood from each body, the V pattern will change in various ways due to refraction, which will be interesting if you look at the pattern from the outside of the container. arouse
〈発明の効果〉
以上説明しｔ通り、本発明は、転写シートの剥離シート
に伸びの優れた高弾性窩分子で形成したから、転写シー
トラ樹脂成型用金型の雌型合せ面に模様面を雌型合せ面
側として配し、合せ面上にて固定するだけで、雄型の移
動によって、雄型の底型部のＦ＠全全面極めて容易に添
着せしめることができる。而して、型締め後、成型キャ
ビティ内へ溶融樹脂全注入すれば、樹脂成型工程と転写
シートの成型容器内面への溶着工程とが同時に達成され
、転写シートが内面に溶着一体化された成型品が極めて
容易に得られる。<Effects of the Invention> As explained above, in the present invention, since the release sheet of the transfer sheet is formed of highly elastic follicular molecules with excellent elongation, a pattern surface can be formed on the female mold mating surface of the mold for molding the transfer sheet. By simply placing it on the mating surface side of the female mold and fixing it on the mating surface, the entire surface of the bottom mold part of the male mold can be attached extremely easily by moving the male mold. After the mold is closed, if the entire molten resin is injected into the molding cavity, the resin molding process and the process of welding the transfer sheet to the inner surface of the molding container can be accomplished simultaneously, resulting in a molded product in which the transfer sheet is welded and integrated to the inner surface of the molding container. products are extremely easy to obtain.
第１図は成型装置の概略を示す部分断面正面図、第２図
は転写シートの心ａを示す断面図、第６図は本発明実施
例に係る樹脂底型容器の斜め上方より見た斜視図。
（１）・・・樹脂底型容器、（２）σり・・・模様、（
３）・・・成型装置、（４ト・・固定側取付板、（５）
・・・雌型、（６）・・・コラム、（７）・・・可動側
取付板、（８］・・・雄型、αＯ・・・押え枠、口・・
・転写シート、α４・・・剥離シート、■・・・底型凸
部。Fig. 1 is a partially sectional front view showing the outline of the molding device, Fig. 2 is a sectional view showing the core a of the transfer sheet, and Fig. 6 is a perspective view of the resin-bottomed container according to the embodiment of the present invention as seen diagonally from above. figure. (1) Resin bottom type container, (2) σri... pattern, (
3)...Molding device, (4)...Fixed side mounting plate, (5)
...Female type, (6)...Column, (7)...Movable side mounting plate, (8)...Male type, αO...Press frame, mouth...
- Transfer sheet, α4... Release sheet, ■... Bottom mold convex part.
Claims (1)
の上に任意の模様が形成された転写シートをその模様面
が樹脂成型用金型の雌型の合せ面側となるように雌型の
合せ面上に配し、該転写シートを雌型の合せ面上にて固
定すると共に樹脂成型用金型の雄型を雌型側に移動させ
、雄型成型部表面に転写シートを当接させ、更に雄型を
移動させつつ雄型成型部の略全面に転写シートを拡張添
着させて型締めし、その後雌型より溶融樹脂を成型キヤ
ビテイに注入し、得られた樹脂成型品の内面の剥離シー
トを除去して前記成型品の内面に模様を転写することを
特徴とする樹脂成型品の内面への模様転写方法。1. Place a transfer sheet on which a desired pattern is formed on a release sheet made of a highly elastic polymer with excellent elongation, so that the pattern side is on the mating side of the female mold of the resin mold. The transfer sheet is placed on the mating surface of the mold, and the transfer sheet is fixed on the mating surface of the female mold, and the male mold of the resin molding mold is moved to the female mold side, and the transfer sheet is applied to the surface of the male molding part. Then, while moving the male die, the transfer sheet is expanded and attached to almost the entire surface of the male molding part, and the mold is clamped. Then, molten resin is injected into the mold cavity from the female mold, and the inner surface of the resulting resin molded product is A method for transferring a pattern to the inner surface of a resin molded product, comprising removing a release sheet and transferring the pattern to the inner surface of the molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16800784A JPS6147224A (en) | 1984-08-11 | 1984-08-11 | Method for transferring pattern to inner surface of resin molded part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16800784A JPS6147224A (en) | 1984-08-11 | 1984-08-11 | Method for transferring pattern to inner surface of resin molded part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6147224A true JPS6147224A (en) | 1986-03-07 |
Family
ID=15860072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16800784A Pending JPS6147224A (en) | 1984-08-11 | 1984-08-11 | Method for transferring pattern to inner surface of resin molded part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6147224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01124864A (en) * | 1987-11-10 | 1989-05-17 | Fuji Xerox Co Ltd | Production of electrophotographic sensitive body |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131043A (en) * | 1983-01-31 | 1983-08-04 | Sharp Corp | Mold structure for injection molding |
-
1984
- 1984-08-11 JP JP16800784A patent/JPS6147224A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131043A (en) * | 1983-01-31 | 1983-08-04 | Sharp Corp | Mold structure for injection molding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01124864A (en) * | 1987-11-10 | 1989-05-17 | Fuji Xerox Co Ltd | Production of electrophotographic sensitive body |
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