EP0847068A1 - Verfahren zur Herstellung einer farbigen Tastenabdeckung für Gummischalter mit Ziffernbeleuchtung - Google Patents

Verfahren zur Herstellung einer farbigen Tastenabdeckung für Gummischalter mit Ziffernbeleuchtung Download PDF

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Publication number
EP0847068A1
EP0847068A1 EP97309838A EP97309838A EP0847068A1 EP 0847068 A1 EP0847068 A1 EP 0847068A1 EP 97309838 A EP97309838 A EP 97309838A EP 97309838 A EP97309838 A EP 97309838A EP 0847068 A1 EP0847068 A1 EP 0847068A1
Authority
EP
European Patent Office
Prior art keywords
layer
color
colored
keypad
surface layer
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.)
Granted
Application number
EP97309838A
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English (en)
French (fr)
Other versions
EP0847068B1 (de
Inventor
Katori R & D Ctr. of Polymatech. Co. Ltd. Masaya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polymatech Co Ltd
Original Assignee
Polymatech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Polymatech Co Ltd filed Critical Polymatech Co Ltd
Publication of EP0847068A1 publication Critical patent/EP0847068A1/de
Application granted granted Critical
Publication of EP0847068B1 publication Critical patent/EP0847068B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H01H9/182—Illumination of the symbols or distinguishing marks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H01H2009/187—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks having symbols engraved or printed by laser

Definitions

  • the present invention relates to a manufacturing method of color keypad for a contact of character illumination rubber switch in a mobile communication system and electrical equipments for car loading.
  • the manufacturing method of the keypad for a contact of character illumination rubber switch made by rubber which illuminates only either characters or figures is already well known through the Japan Patent Publication No. HEISEI 5-32850.
  • laser beam is irradiated so that the laser beam energy is absorbed into a colored surface layer in the shapes of characters and burns off it.
  • the available keypads manufactured by irradiating laser beam currently have only dark colors such as black or gray or the like as the colored surface layer. It is possible to emit the laser beam on the colored surface layer of any colors of which are not black or gray and to burns off it, on the contrary, the incomplete removal thereof is readily caused within the colored surface layer because the colored surface layer do not completely absorb the laser beam.
  • the present invention relates to a manufacturing method of a keypad for a contact of character illumination rubber switch composed of a surface enriched in color design variation, comprising the steps of forming a black or gray intermediate layer 3 over a surface section of a color keypad member 1 for a contact of character illumination switch of the mobile communication system, electric equipments or the like, forming a colored surface layer thereon with any colors, and applying laser beam from the upside thereof for burning up and removing the intermediate layer and the colored surface layer.
  • FIG 1 is a cross section view of a keypad according to the present invention.
  • FIG 2 is a cross section view of a conventional keypad
  • a body of keypad 1 is formed with transparent or semi-transparent elastic material.
  • elastic material includes natural rubber (polyisoprene rubber), butadiene rubber, styrene butadiene rubber, chloroprene rubber, nitryl rubber, butyl rubber, ethylene propylene rubber, acrylic rubber, silicone rubber, fluoric rubber, urethane rubber, other synthetic rubber, or styrene base, olefin base, ester base, urethane base thermoplastic elastomer.
  • a colored translucent layer 2 is formed by painting or printing with polyester base, silicone base or various liquid rubber (urethane base, diene base, polybutene base).
  • polyester base silicone base or various liquid rubber (urethane base, diene base, polybutene base).
  • various liquid rubber urethane base, diene base, polybutene base.
  • reciprocation, air, rotary or other well-known methods are employed, while for printing, screen, offset, PAD or other well-known methods are employed.
  • a transparent or semi-transparent silicone rubber is molded by a metal die of keypad shape and a colored translucent layer 2 is coated using silicone ink white (made by Toshiba Silicone Ltd.) in order to form a colored translucent layer base. At that time, 20 parts by weight of hardener is added to 100 parts by weight of silicone ink.
  • silicone ink black (made by Toshiba Silicone Ltd.) is formed thereon in the shape of key top by silk screen printing.
  • the key top printing may also be applied with gray silicone ink mixing conveniently white ink and blackink (made by Toshiba Silicone Ltd.) as the intermediate layer 3.
  • the intermediate layer 3 and the colored surface layer 4 at the same time are removed by a laser marker (made by Fuji Electric Ltd.).
  • a laser marker made by Fuji Electric Ltd.
  • the colored surface layer and the intermediate layer can be removed in the same shape of the given character and/or symbol as the keypad for conventional black, gray or other character illuminating rubber switch contacts.
  • the thickness of the colored surface layer 4 is set within the range of 50 ⁇ m or less depending on the laser output energy conditions of the laser machine, however, preferably 20 to 30 ⁇ m is appropriate. At 15 ⁇ m or less, in some cases, the color of the intermediate layer 3 becomes visible through the colored surface layer and the color is not distinct in respect of the outside appearance. At 50 ⁇ m or more, the energy efficiency of the intermediate layer is deteriorated, the increase of the processing time and the removal of some colored surface layer become easy to occur.
  • any colors other than black can be selected for the colored surface layer having the widest area in respect of the outside appearance, permitting to enrich the variation of key top color design.
  • products presenting desired qualities, and strongly demanded especially by women and young people can be manufactured without suffering deterioration of any characters or figures such as discoloration due to the fading of the colored transparent or translucent layer.

Landscapes

  • Push-Button Switches (AREA)
  • Manufacture Of Switches (AREA)
  • Laser Beam Processing (AREA)
EP97309838A 1996-12-06 1997-12-05 Verfahren zur Herstellung einer farbigen Tastenabdeckung für Gummischalter mit Ziffernbeleuchtung Expired - Lifetime EP0847068B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP34042796 1996-12-06
JP340427/96 1996-12-06
JP8340427A JPH10172378A (ja) 1996-12-06 1996-12-06 文字照光式ゴム製接点用カラーキーパッドの製造方法

Publications (2)

Publication Number Publication Date
EP0847068A1 true EP0847068A1 (de) 1998-06-10
EP0847068B1 EP0847068B1 (de) 2000-07-19

Family

ID=18336862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97309838A Expired - Lifetime EP0847068B1 (de) 1996-12-06 1997-12-05 Verfahren zur Herstellung einer farbigen Tastenabdeckung für Gummischalter mit Ziffernbeleuchtung

Country Status (4)

Country Link
EP (1) EP0847068B1 (de)
JP (1) JPH10172378A (de)
KR (1) KR100456746B1 (de)
DE (1) DE69702585T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003074259A2 (de) * 2002-03-04 2003-09-12 Silcos Gmbh Betätigungs- und/oder anzeigeelement sowie verfahren zu dessen herstellung
KR100951721B1 (ko) 2008-03-03 2010-04-09 주식회사 엘티에스 휴대 단말기용 키 패드의 폰트 가공 장치 및 가공 방법

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10116633A1 (de) * 2001-04-04 2002-10-10 Valeo Schalter & Sensoren Gmbh Taste oder Blende, insbesondere Taste oder Blende für einen Schalter, sowie Verfahren zur Herstellung
KR20020080687A (ko) * 2001-04-17 2002-10-26 김영호 셀룰라폰용 키패드의 제조 방법
DE10339842B4 (de) * 2003-08-29 2008-02-14 Angell-Demmel Europe Gmbh Verfahren zur Herstellung von Tasten, Zier- und Instrumentenblenden mit Feinsymbolik und eine nach dem Verfahren hergestellte Bedientaste
KR101034137B1 (ko) 2004-09-20 2011-05-13 엘지전자 주식회사 휴대용 단말기의 키패드 제작방법
DE102008026719A1 (de) * 2008-06-04 2009-12-10 Silcos Gmbh Verfahren zur Aufbringung einer Beschichtung auf ein Substrat und Teile aus diesem Substrat
JP2011141957A (ja) * 2010-01-05 2011-07-21 Seiko Epson Corp 透光型表示体の製造方法
JP5479297B2 (ja) * 2010-10-08 2014-04-23 信越ポリマー株式会社 押釦スイッチ用部材、キーパネル、電子機器および押釦スイッチ用部材の製造方法
KR101351814B1 (ko) * 2011-12-23 2014-01-15 김수균 디자인 요소를 갖는 배선기구 및 그 제조방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3509519A1 (de) * 1985-03-16 1986-09-18 Richard Heinze Kunststoff-Spritzgießwerke GmbH & Co, 4900 Herford Tastenkoerper sowie verfahren und vorrichtung zu seiner herstellung
GB2246099A (en) * 1990-07-18 1992-01-22 Silitek Corp Marking indicia on keytops
DE4324625A1 (de) * 1992-02-14 1995-01-26 Shinetsu Polymer Co Verfahren zur Herstellung einer Tastenabdeckung für beleuchtete Druckknopfschalter
US5510782A (en) * 1992-08-03 1996-04-23 Itt Corporation Back lit keypad

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3509519A1 (de) * 1985-03-16 1986-09-18 Richard Heinze Kunststoff-Spritzgießwerke GmbH & Co, 4900 Herford Tastenkoerper sowie verfahren und vorrichtung zu seiner herstellung
GB2246099A (en) * 1990-07-18 1992-01-22 Silitek Corp Marking indicia on keytops
DE4324625A1 (de) * 1992-02-14 1995-01-26 Shinetsu Polymer Co Verfahren zur Herstellung einer Tastenabdeckung für beleuchtete Druckknopfschalter
US5510782A (en) * 1992-08-03 1996-04-23 Itt Corporation Back lit keypad

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003074259A2 (de) * 2002-03-04 2003-09-12 Silcos Gmbh Betätigungs- und/oder anzeigeelement sowie verfahren zu dessen herstellung
WO2003074259A3 (de) * 2002-03-04 2009-04-16 Silcos Gmbh Betätigungs- und/oder anzeigeelement sowie verfahren zu dessen herstellung
KR100951721B1 (ko) 2008-03-03 2010-04-09 주식회사 엘티에스 휴대 단말기용 키 패드의 폰트 가공 장치 및 가공 방법

Also Published As

Publication number Publication date
KR19980063561A (ko) 1998-10-07
DE69702585T2 (de) 2001-03-08
EP0847068B1 (de) 2000-07-19
DE69702585D1 (de) 2000-08-24
JPH10172378A (ja) 1998-06-26
KR100456746B1 (ko) 2005-02-02

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