JPS6410045B2 - - Google Patents
Info
- Publication number
- JPS6410045B2 JPS6410045B2 JP56005916A JP591681A JPS6410045B2 JP S6410045 B2 JPS6410045 B2 JP S6410045B2 JP 56005916 A JP56005916 A JP 56005916A JP 591681 A JP591681 A JP 591681A JP S6410045 B2 JPS6410045 B2 JP S6410045B2
- Authority
- JP
- Japan
- Prior art keywords
- symbols
- soft contact
- characters
- silk screen
- lens
- 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
- 238000004043 dyeing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 239000000975 dye Substances 0.000 description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 1
- IDCBOTIENDVCBQ-UHFFFAOYSA-N TEPP Chemical compound CCOP(=O)(OCC)OP(=O)(OCC)OCC IDCBOTIENDVCBQ-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000006103 coloring component Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
- NXYNTHCSPIVNNX-SAIUNTKASA-N leucoester Natural products CCCCCCCCCCCCCCCC(=CCOC(=O)CCC[C@H](C)CCC[C@H](C)CCC(C)C)C NXYNTHCSPIVNNX-SAIUNTKASA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000007447 staining method Methods 0.000 description 1
- 239000012192 staining solution Substances 0.000 description 1
- 239000000984 vat dye Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
- G02B1/043—Contact lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00038—Production of contact lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00865—Applying coatings; tinting; colouring
- B29D11/00894—Applying coatings; tinting; colouring colouring or tinting
- B29D11/00903—Applying coatings; tinting; colouring colouring or tinting on the surface
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/021—Lenses; Lens systems ; Methods of designing lenses with pattern for identification or with cosmetic or therapeutic effects
Description
本発明は、ソフトコンタクトレンズに文字・記
号等を染着する方法に関する。
ソフトコンタクトレンズに文字、記号等を付与
することは、次のような要件のために有効な手段
とされている。すなわち、(1)水分を吸収して柔か
くなつた場合の表裏の判別のため、(2)左右のレン
ズを区分するため、(3)レンズの規格を明示し、区
分、整理を容易にするためである。
しかし、ソフトコンタクトレンズは水分を吸収
する性質があり、ハードコンタクトレンズのよう
に刻印することは不可能であり、細かい文字、記
号を付与するのは非常に困難であつた。
従来技術として知られる方法として、２−ヒド
ロキシエチルメタクリレートなどの親水性単量体
とともに、ジアゾ成分と発色反応を生起するよう
なカプラー材を共重合させることによつてあらか
じめコンタクトレンズ材料へ含有させておき、レ
ンズを成形した後、ジアゾ水溶液に浸漬、カツプ
リング反応を生起して、発色させ所要のマークを
付与する方法があるが、この方法は、(1)所要のマ
ーク部位以外にも着色成分を与えなければならな
いので、長期間の使用によるレンズの変色を惹起
する。(2)長期間の使用によりマークの色が薄くな
る等の欠点を有している。
本発明は、従来技術の前記欠点を解消して、(1)
所要のマーク部位にのみ着色成分を作用させる。
(2)長期間安定した着色像を与える。(3)操作が簡単
であり、同時に大量の処理を行なうことができる
ソフトコンタクトレンズに文字記号等を染着する
方法を提供するものである。
本発明は、露光板と所要の文字、記号等の型を
設けたシルクスクリーンとの間に膨潤状態のソフ
トコンタクトレンズを、該所要の文字、記号等の
型がソフトコンタクトレンズに接するように重ね
て配置した後、染色液を少なくとも当該型に施
し、次いでシルクスクリーン上より紫外線照射を
行なうことにより染色液を固着化することを特徴
とするソフトコンタクトレンズに文字、記号等を
染着する方法から構成される。
すなわち、第１図に示すように、露光板１上に
膨潤状態のソフトコンタクトレンズ２を配置し、
その上に所要の文字、記号等の型３を設けたシル
クスクリーン４を重ねて配置する。
この際、ソフトコンタクトレンズ２に文字、記
号等を付与する位置に、シルクスクリーン４に設
けた型３が合致するように位置合わせをして重ね
て配置する。
なお、ソフトコンタクトレンズ２は図示するよ
うに膨潤状態のため柔らかく平面状となる。
次に、第２図に示すように、少なくとも所要の
文字、記号等の型３に染色液６を施した後、シル
クスクリーン４の上方より露光器５にて紫外線照
射を行なうことにより、染色液６を固着化する。
そして、ソフトコンタクトレンズ２を取り出す
と、第３図に示すように、ソフトコンタクトレン
ズ２の表面に所要の文字、記号等が染色されてい
る。
なお、第３図におけるソフトコンタクトレンズ
表面の「71」なる数字は本発明における文字、記
号等の一例の染着態様を示すものであり、染着さ
れる文字、記号に特に限定はなく、所要の文字、
記号等であればよい。
ソフトコンタクトレンズは、あらかじめ、0.9
％生理食塩水中に浸漬し、飽和膨潤状態としたも
のを使用するのがよい。
シルクスクリーンは、所要の文字・記号等に対
応した型を設けてあるナイロン、テトロン等の材
料で製作したものがよく、処理可能なレンズの数
に対応して、レンズに接する部分に該当文字・記
号等の型を設けることにより、一度に大量の染着
を可能としている。
使用する染色液は、紫外線照射によりレンズ
（成分）と強固に染着する染料から調製されれば
よく、特に可溶性バツト染料よりなる染色液は好
適である。
染色液を施こすには、シルクスクリーンの上か
ら塗布する方法が最も利用しやすく、塗布は、染
色液が均一にレンズ表面に到達すればよく、通常
の塗布手段が用いられる。
紫外線照射はシルクスクリーンの上方から露光
器にて短時間照射すればよく、例えば紫外線ラン
プ（350〜380nｍ）を使用する。
本発明の方法は、その操作手段が簡便、容易で
あり、製品の安全性、耐久性も優れたものが得ら
れる。
実施例
C.I.Vat BLack Ｉのロイコエステルの４％水
溶液を調製して染色液とした。
エチレングリコールモノメタクリレート99.5重
量％、エチレングリコールジメタクリレート0.5
重量％を重合させてなる素材よりコンタクトレン
ズを成形する。
これを0.9％生理食塩水中にて90分間煮沸し、
飽和膨潤状態とした。
次に前記飽和膨潤させたレンズを所要の文字、
記号等に対応した型を設けたシルクスクリーン
（ナイロン製）を用意し、型に合致させるように
はりつけてから、露光板に配置した。
なお、露光板上に前記飽和膨潤させたレンズを
配置した後、所要の文字、記号等に対応した型を
設けたシルクスクリーンをレンズに接するように
重ねて配置してもよい。
前記調製した染色液をシルクスクリーンの上か
らハンドスプレーによつて塗布した。
次に0.8W紫外線ランプ355nｍにてシルクスク
リーンの上方位置から５分間照射を行つた。
その結果あらかじめ意図した文字・記号等が鮮
明な青色でレンズ上に染着されていることを確認
できた。
安全性および耐久性の確認
安全性に関しては、実施例にもとづいて作成さ
れたソフトコンタクトレンズ並びに同一材料より
なるソフトコンタクトレンズで未処理のものを90
分間煮沸処理を施こした後、厚生省の定める溶出
物試験を実施した結果、両者ともすべての基準に
合格し、文字・記号等の染着付与による溶出物お
よび両者間に有為の差異は認められなかつた。
耐久性に関しては、同上のソフトコンタクトレ
ンズについて、下記のとおりの項目について、耐
久性試験を実施した結果、特に問題は認められな
かつた。
The present invention relates to a method for dyeing characters, symbols, etc. onto soft contact lenses. Adding characters, symbols, etc. to soft contact lenses is considered an effective means to meet the following requirements. In other words, (1) to distinguish between front and back when they absorb moisture and become soft, (2) to distinguish between left and right lenses, and (3) to clearly indicate lens specifications to facilitate classification and organization. It is. However, soft contact lenses have the property of absorbing moisture and cannot be engraved like hard contact lenses, and it is extremely difficult to add fine letters and symbols to them. As a method known in the prior art, a coupler material that causes a color-forming reaction with a diazo component is copolymerized with a hydrophilic monomer such as 2-hydroxyethyl methacrylate, so that it is incorporated into contact lens materials in advance. After molding the lens, it is immersed in a diazo aqueous solution to cause a coupling reaction to develop color and provide the desired mark. Since it has to be given, it causes discoloration of the lens due to long-term use. (2) It has drawbacks such as the color of the mark becoming lighter after long-term use. The present invention solves the above-mentioned drawbacks of the prior art, and (1)
The coloring component is applied only to the required mark area.
(2) Gives a colored image that is stable for a long period of time. (3) To provide a method for dyeing characters and symbols on soft contact lenses, which is easy to operate and allows a large amount of processing to be carried out at the same time. In the present invention, a swollen soft contact lens is placed between an exposure plate and a silk screen provided with molds of required characters, symbols, etc., so that the molds of the required characters, symbols, etc. are in contact with the soft contact lens. A method for dyeing letters, symbols, etc. on soft contact lenses, which is characterized by applying a dyeing solution to at least the mold after placing the mold, and then fixing the dyeing solution by irradiating the silk screen with ultraviolet rays. configured. That is, as shown in FIG. 1, a swollen soft contact lens 2 is placed on an exposure plate 1,
A silk screen 4 provided with a pattern 3 of required characters, symbols, etc. is placed thereon. At this time, the soft contact lenses 2 are aligned so that the mold 3 provided on the silk screen 4 matches the position where characters, symbols, etc. are to be added, and the soft contact lenses 2 are placed in an overlapping manner. Note that, as shown in the figure, the soft contact lens 2 is in a swollen state, so it becomes soft and flat. Next, as shown in FIG. 2, after applying the dyeing liquid 6 to the mold 3 of at least the required characters, symbols, etc., the dyeing liquid 6 is irradiated with ultraviolet light from above the silk screen 4 using the exposure device 5. Fix 6.
When the soft contact lens 2 is taken out, as shown in FIG. 3, the surface of the soft contact lens 2 is dyed with desired characters, symbols, etc. In addition, the number "71" on the surface of the soft contact lens in FIG. 3 indicates an example of the dyeing mode of characters, symbols, etc. in the present invention, and there is no particular limitation on the characters and symbols to be dyed. characters,
Any symbol etc. is fine. Soft contact lenses are pre-prepared with 0.9
% physiological saline to bring it into a saturated swollen state. Silk screens are best made of materials such as nylon or Tetron, which have molds that correspond to the required characters and symbols, and the corresponding characters and symbols are printed on the part that touches the lenses, depending on the number of lenses that can be processed. By providing molds such as symbols, it is possible to dye a large amount at once. The dyeing liquid to be used may be prepared from a dye that firmly adheres to the lens (component) by ultraviolet irradiation, and a dyeing liquid comprising a soluble vat dye is particularly suitable. The most convenient method for applying the dyeing solution is to apply it from above the silk screen, and it is sufficient that the dyeing solution reaches the lens surface uniformly, and a normal coating method can be used. The ultraviolet rays may be irradiated from above the silk screen for a short time using an exposure device, for example, using an ultraviolet lamp (350 to 380 nm). The method of the present invention is simple and easy to operate, and provides products with excellent safety and durability. Example A 4% aqueous solution of leucoester of CIVat BLack I was prepared and used as a staining solution. Ethylene glycol monomethacrylate 99.5% by weight, ethylene glycol dimethacrylate 0.5%
A contact lens is molded from a material made by polymerizing % by weight. Boil this in 0.9% physiological saline for 90 minutes,
It was brought into a saturated swollen state. Next, the saturated swollen lens is shaped into the desired character,
A silk screen (made of nylon) with a mold corresponding to the symbol, etc. was prepared, and after gluing it to match the mold, it was placed on an exposure plate. Incidentally, after placing the saturated swollen lens on the exposure plate, a silk screen provided with a mold corresponding to desired characters, symbols, etc. may be placed overlappingly in contact with the lens. The dye solution prepared above was applied onto the silk screen by hand spraying. Next, irradiation was performed for 5 minutes from above the silk screen using a 0.8W ultraviolet lamp at 355 nm. As a result, we were able to confirm that the intended characters and symbols were dyed onto the lens in a clear blue color. Confirmation of safety and durability Regarding safety, soft contact lenses made based on the examples and untreated soft contact lenses made of the same material were tested at 90%.
After boiling for a minute, we conducted an eluate test specified by the Ministry of Health and Welfare, and as a result, both passed all standards, and there were no eluates due to dyeing of letters, symbols, etc., and no significant differences between the two. I couldn't help it. Regarding durability, durability tests were conducted on the following items for the same soft contact lenses, and no particular problems were found.
【表】【table】
第１図および第２図は染色方法の説明図であ
り、ａはｂ図におけるＡ−A′による断面図、ｂ
は一部透視図を含む斜視図を示す。第３図は文
字、記号等を染色したソフトコンタクトレンズで
ある。図中の符号は以下の通りである。
１：露光板、２：ソフトコンタクトレンズ、
３：所要の文字、記号等の型、４：シルクスクリ
ーン、５：露光器、６：染色液。
Figures 1 and 2 are explanatory diagrams of the staining method, where a is a cross-sectional view taken along A-A' in figure b, and b
shows a perspective view including a partially transparent view. Figure 3 shows a soft contact lens with dyed letters, symbols, etc. The symbols in the figure are as follows. 1: Exposure plate, 2: Soft contact lens,
3: Mold of required characters, symbols, etc., 4: Silk screen, 5: Exposure device, 6: Staining liquid.
Claims (1)
ルクスクリーンとの間に膨潤状態のソフトコンタ
クトレンズを、該所要の文字、記号等の型がソフ
トコンタクトレンズに接するように重ねて配置し
た後、染色液を少なくとも当該型に施し、次いで
シルクスクリーン上より紫外線照射を行なうこと
により染色液を固着化することを特徴とするソフ
トコンタクトレンズに文字、記号等を染着する方
法。1. A swollen soft contact lens was placed between the exposure plate and a silk screen with molds of the required characters, symbols, etc. placed so that the molds of the required characters, symbols, etc. were in contact with the soft contact lens. A method for dyeing letters, symbols, etc. on soft contact lenses, characterized in that a dyeing solution is applied to at least the mold, and then the dyeing solution is fixed by irradiating the silk screen with ultraviolet rays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56005916A JPS57120912A (en) | 1981-01-20 | 1981-01-20 | Method for dyeing character, symbol or the like on soft contact lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56005916A JPS57120912A (en) | 1981-01-20 | 1981-01-20 | Method for dyeing character, symbol or the like on soft contact lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57120912A JPS57120912A (en) | 1982-07-28 |
| JPS6410045B2 true JPS6410045B2 (en) | 1989-02-21 |
Family
ID=11624213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56005916A Granted JPS57120912A (en) | 1981-01-20 | 1981-01-20 | Method for dyeing character, symbol or the like on soft contact lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57120912A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4582402A (en) * | 1984-04-16 | 1986-04-15 | Schering Corporation | Color-imparting contact lenses |
| JPH0125932Y2 (en) * | 1985-05-29 | 1989-08-03 | ||
| JPS63264719A (en) * | 1986-12-08 | 1988-11-01 | Toyo Contact Lens Co Ltd | Method for dyeing soft contact lens |
| DK0498835T3 (en) | 1989-11-01 | 1995-06-12 | Schering Corp | Colored contact lens with very natural appearance |
-
1981
- 1981-01-20 JP JP56005916A patent/JPS57120912A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57120912A (en) | 1982-07-28 |
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