JPS61173980A - Printing on metal shaft surface of writing instrument and the like - Google Patents

Abstract

PURPOSE:To eliminate a difference of the level of a silk printing boundary by applying silk printing to selected points of metal shaft material surface with epoxy ink enhance external appearance, and perform required plating to a portion except where printing is applied and finally a top coat all over the surface, thereby eliminating the generation of inferior products. CONSTITUTION:Color silk printing is applied with epoxy ink to part of the metal shaft material 1 surface and primary nickel or copper plating is applied to a portion except a silk printing layer 5. Further cold plating is applied to the surface of the primary plated layer 2 and finally a top coat is formed on the surface of the silk printed layer 5 and the secondary gold-plated layer 3. Thus a level difference caused by the thickness of ink on the surface of the metal shaft 1 is eliminated and subsequently, any causes for stripping, etc. by the catching of nail. At the same time, the quality of external appearance is improved. Also an overcoat is no longer required, resulting in decreased manhour and cost saving. Dust settlement is almost eliminated. In this way, the occurrence rate of rejects is reduced.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は筆記具等の金属軸表面へ模様等を印刷する方法
に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of printing a pattern or the like on the surface of a metal shaft of a writing instrument or the like.

（従来の技術） 従来の筆記具等の金属軸表面への一般的な印刷方法は、
第２図艦＝示す如く、まず黄銅や鉄等の金属軸素材（１
）の表面にニッケルめっき又は銅ニッケルめっき等の一
次めっきを施した後、更に金めつき等の二次めっきを施
し、その表面墨；オーバーコートを施した後所要箇所に
シルク印刷を施し、最後に全体にトップコートを施すも
のである。図中（２）が−次めっき層、（３）が二次め
っき層、（４）がオーバーコート層、（５）がシルク印
刷層、（６）がトップコート層を夫々示す。このように
めっきの後でオーバーコートを施すのはシルク印刷イン
キがめつき液に浸されるｉこれを防止するためであるが
、この為二度コートを行なうことになってゴミが付着し
易く不良品の発牛車が高くなる欠点があった。又、模様
等をシルク印刷する場合は第２図に示すようにインキの
厚みのため境界部に段差（７）が生じ美観を損ねるばか
りか爪等にひっかかりが生じて剥離等を引き起す原因と
もなっていた。(Prior art) The general method of printing on the surface of a metal shaft of a conventional writing instrument is as follows:
Figure 2: As shown, metal shaft materials such as brass and iron (1
) After applying primary plating such as nickel plating or copper nickel plating, secondary plating such as gold plating is applied to the surface. A top coat is applied to the entire surface. In the figure, (2) shows the secondary plating layer, (3) the secondary plating layer, (4) the overcoat layer, (5) the silk printing layer, and (6) the top coat layer. The reason for applying an overcoat after plating is to prevent the silk printing ink from being immersed in the plating solution, but this requires two coats, which can easily attract dust and cause problems. The drawback was that high-quality bullock carts were expensive. In addition, when silk printing patterns, etc., as shown in Figure 2, the thickness of the ink creates a step (7) at the border, which not only impairs the aesthetic appearance, but also causes it to catch on nails and cause peeling. was.

（発明が解決しようとする問題点） 本発明はシルク印刷境界部の段差が解消して外観品質が
向上し、又従来の方法に比べて工程が減少し、更に不良
品の発生率も低下する新規な印刷方法の提供を目的とす
る。(Problems to be Solved by the Invention) The present invention eliminates the level difference at the border of silk printing, improves the appearance quality, reduces the number of steps compared to conventional methods, and further reduces the incidence of defective products. The purpose is to provide a new printing method.

（問題点を解決するための手段） 本発明は上記目的を達成するために、金属軸素材面の所
要箇所にエポキシ系インキによりシルク印刷を施し、そ
の後当該印刷箇所を除いた部分に所要なめっきを施し、
最後に全体にトップコートを施すことを特徴とする筆記
具等の金属軸表面への印刷方法を提供するものである。(Means for Solving the Problems) In order to achieve the above object, the present invention applies silk printing to required locations on the surface of a metal shaft material using epoxy ink, and then applies required plating to the areas other than the printed locations. give,
The present invention provides a method of printing on the surface of a metal shaft of a writing instrument or the like, which is characterized by applying a top coat to the entire surface.

（作　用） 本発明ではシルク印刷にエポキシ系インキを使用するこ
とＣ：よりめっき液に対する耐久性が増大しよってオー
バーコートを施してめっき層とシルク印刷用インキとを
分断する必要がなくなりシルク印刷層とめつき層とを隣
接して配置することができよってシルク印刷層をめっき
層と同一面内に没入させることが可能となりインキの厚
みによる段差が解消される。又、めっき層に対するオー
バーコートが不要となりトップコート−回だけで済むの
で工程が減少すると共にゴミ等が付着しにくくなり不良
品の発生率が低下する。(Function) In the present invention, epoxy-based ink is used for silk printing. C: The durability against plating solution is increased, so there is no need to apply an overcoat to separate the plating layer and silk printing ink, and silk printing Since the layer and the plating layer can be arranged adjacent to each other, it is possible to immerse the silk-printed layer in the same plane as the plating layer, and the difference in level caused by the thickness of the ink can be eliminated. Further, since overcoating of the plating layer is not required and only a top coat is required, the number of steps is reduced, and dust and the like are less likely to adhere, thereby reducing the incidence of defective products.

（実施例） 第１図は本発明の方法を実施した筆記具の金属軸の一部
断面を示したものであり、金属軸素材（１）の表面の一
部にエポキシ系インキにより有色のシルク印刷を施し、
このシルク印刷層（５）を除いた部分にニッケルめっき
又は銅ニッケルめっきの一次めっきを施し、更にこの一
次めっき層（２）の表面に金めつきを施し、最後にシル
ク印刷ｒｍ　（５１及び金めつきの二次めっき層（３）
の表面（ニドツブコートを施し完成したものである。図
中（６）がトップコート層を示す。(Example) Fig. 1 shows a partial cross section of a metal shaft of a writing instrument in which the method of the present invention was implemented, and a part of the surface of the metal shaft material (1) is colored silk-screened with epoxy ink. give,
Primary plating of nickel plating or copper-nickel plating is applied to the part excluding this silk printing layer (5), and then gold plating is applied to the surface of this primary plating layer (2), and finally silk printing rm (51 and gold Secondary plating layer (3)
The surface (completed by applying Nidobu coating). (6) in the figure shows the top coat layer.

（発明の効果） 本発明は上述した構成及び作用を有するものであって、
金属軸表面のインキの厚みによる段差が解消されて爪等
の引掛かりによる剥離等の原因が消失すると共に外観品
質が向上する効果があり、又従来の工程に比べてオーバ
ーコートが不要となるため工程数が減少してコストを低
下できるのは勿論のことゴミ等が付着しにくくなって不
良品の発生率を低下させることができる効果がある。(Effect of the invention) The present invention has the above-mentioned configuration and operation,
This has the effect of eliminating the difference in thickness due to the thickness of the ink on the surface of the metal shaft, eliminating the cause of peeling due to catching on nails, etc., and improving the appearance quality, as well as eliminating the need for an overcoat compared to conventional processes. Not only can the number of steps be reduced and costs can be reduced, but also dust and the like are less likely to adhere, thereby reducing the incidence of defective products.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の実施例による金属軸の一部断面図、又
第２図は従来の方法を実施した金属軸の一部断面図であ
る。FIG. 1 is a partial sectional view of a metal shaft according to an embodiment of the present invention, and FIG. 2 is a partial sectional view of a metal shaft subjected to a conventional method.

Claims (1)

【特許請求の範囲】[Claims] 金属軸素材面の所要箇所にエポキシ系インキによりシル
ク印刷を施し、その後当該印刷箇所を除いた部分に所要
なめつきを施し、最後に全体にトップコートを施すこと
を特徴とする筆記具等の金属軸表面への印刷方法。A metal shaft for a writing instrument, etc., characterized in that silk printing is applied to the required parts of the material surface of the metal shaft with epoxy ink, then the required plating is applied to the parts other than the printed parts, and finally a top coat is applied to the entire surface. How to print on the surface.