WO2019149384A1 - Cadran pour pièce d'horlogerie et son procédé de fabrication - Google Patents
Cadran pour pièce d'horlogerie et son procédé de fabrication Download PDFInfo
- Publication number
- WO2019149384A1 WO2019149384A1 PCT/EP2018/055510 EP2018055510W WO2019149384A1 WO 2019149384 A1 WO2019149384 A1 WO 2019149384A1 EP 2018055510 W EP2018055510 W EP 2018055510W WO 2019149384 A1 WO2019149384 A1 WO 2019149384A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mother
- pearl
- sheet
- dial
- pattern
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/12—Selection of materials for dials or graduations markings
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
- G04B45/0015—Light-, colour-, line- or spot-effects caused by or on stationary parts
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
- G04D3/0043—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
- G04D3/0048—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for dials
Definitions
- the invention relates to a dial for a timepiece comprising a support and a mother-of-pearl sheet, the mother-of-pearl sheet having a front face and a rear face opposite said support and on which a pattern has been printed.
- the invention also relates to a method of manufacturing such a dial, as well as to a timepiece comprising such a dial.
- the pattern is formed by phosphorescent, fluorescent or luminescent light elements in order to form a visible image in the dark but invisible under normal illumination conditions.
- the light elements can be applied to the rear face of the mother-of-pearl or on the substrate or be deposited in blind cavities dug in the nacre or in the substrate.
- the recommended thickness for the mother-of-pearl leaf is 0.4 mm. This thickness is necessary to allow to dig the blind cavities.
- the mother-of-pearl sheet must be of sufficient thickness so that the layer of phosphorescent pigments does not appear transparently through the mother-of-pearl in the light of day, in a condition of normal illumination. This thickness of mother of pearl gives the dial a significant thickness so that it is not possible to make ultra-thin dials for the manufacture of ultra-thin watches. Summary of the invention
- the object of the present invention is to overcome the drawbacks mentioned above by proposing a mother-of-pearl dial and its manufacturing method making it possible to produce an ultra-thin dial and a timepiece, in particular an ultra-thin watch, comprising such a dial, without harming the characteristic appearance of mother-of-pearl.
- the invention relates to a dial for a timepiece comprising a support and a mother-of-pearl sheet, the mother-of-pearl sheet having a front face and a rear face facing said support and on which a pattern has been printed. .
- the mother-of-pearl sheet has a thickness of between 50 ⁇ m and 300 ⁇ m so that the pattern printed on the rear face of the mother-of-pearl sheet appears transparently through the mother-of-pearl under normal conditions of illumination.
- FIG. 1 is a top view of a dial according to the invention.
- FIG. 1 is a sectional view along the axis AA of Figure 1.
- the dial 1 for a timepiece comprises a support 2 and a nacre sheet 3.
- the support 2 is metallic. It is for example made in a brass sheet.
- the mother-of-pearl sheet has a front face 3a, corresponding to the side visible by the user, and a rear face 3b, positioned facing the support 2 and on which a pattern 4 has been printed.
- This metal ring 6 may have, for example, a thickness of the order of 700 ⁇ m to 900 ⁇ m. for example 800 ⁇ m.
- the mother-of-pearl sheet has a thickness of between 50 ⁇ m and 300 ⁇ m so that the pattern printed on the rear face of the mother-of-pearl appears transparently through the mother-of-pearl under normal conditions of illumination, especially in grazing light.
- the mother-of-pearl sheet has a thickness of between 50 ⁇ m and 250 ⁇ m, preferably between 100 ⁇ m and 200 ⁇ m, preferably between 120 ⁇ m and 180 ⁇ m, more preferably between 130 ⁇ m and 170 ⁇ m, and even more preferentially between 140 pm and 160 pm.
- the thickness of the mother-of-pearl sheet is about 150 ⁇ m.
- Such a thickness of the mother-of-pearl sheet is a compromise found by the applicant, on the one hand to preserve the transparency necessary for the pattern printed on the back side of the mother-of-pearl to appear transparently through the mother-of-pearl under normal conditions. illumination, and secondly to avoid breaking the mother-of-pearl sheet, especially when printing the pattern, because of too great fragility.
- the metal support 2 may for example have a thickness of the order of 200 pm to 250 pm, so that the dial has for example an ultra-thin total thickness of 350 pm to 400 pm.
- the printed pattern 4 can be any type of pattern.
- the printed pattern is constituted by a set of lines of different widths, to create the appearance of a structure.
- the pattern may represent the ribs and the structure of a leaf.
- the nacre used is natural mother-of-pearl.
- the nacre can be colored.
- the method of manufacturing such a dial comprises the steps of: a) providing a support 2, preferably metal, for example brass
- a mother-of-pearl sheet 3 having a thickness of between 50 ⁇ m and 300 ⁇ m, preferably between 50 ⁇ m and 250 ⁇ m, preferably between 100 ⁇ m and 200 ⁇ m, and preferably between 120 ⁇ m and 180 ⁇ m; more preferably between 130 pm and 170 pm, and even more preferably between 140 pm and 160 pm
- step c) print a pattern 4 on the rear face 3b of the mother-of-pearl sheet d) assemble the printed mother-of-pearl sheet 3 obtained in step c) on the support 2.
- the method also comprises a step for assembling the metal ring 6 on the peripheral edge of the nacre sheet 3.
- the support 2, the nacre sheet 3 and the ring 6 are cut and prepared to have the desired shape and dimensions of the dial, as well as the thicknesses according to the invention.
- the holes 2 are also made in the support 2 and the mother-of-pearl sheet 3 for the passage of the axis of the switch.
- a pattern 4 is printed on the rear face 3b of the mother-of-pearl sheet by means of an ink deposited according to a method chosen from the group comprising screen-printing, photolithography, and jet printing. 'ink. Screen printing is particularly preferred.
- the thickness of the deposited ink layer is between 10 ⁇ m and 40 ⁇ m, preferably between 20 ⁇ m and 30 ⁇ m.
- the ink used is standard.
- the printing method is implemented to print a pattern consisting of a set of lines of different widths to create the appearance of a structure.
- the method of the invention may comprise a step e) of tinting the mother-of-pearl before the step c) of printing the pattern.
- the front face 3a of the mother-of-pearl sheet can be polished to obtain a front face of appearance smooth.
- the mother-of-pearl sheet 3 is then protected by a sapphire crystal (not shown). Indexes or other decorative elements may be placed on the sapphire crystal or on the mother-of-pearl sheet 3.
- the present invention also relates to a timepiece comprising a dial as described above.
- the invention makes it possible to obtain an ultra thin, mother-of-pearl frame decorated with a motif, while preserving the iridescent nature of the mother-of-pearl and the smooth appearance of the mother-of-pearl on the front face. Through transparency through the mother of pearl, the pattern appears more discreet, thinner and more elegant.
- the invention also makes it possible to obtain a timepiece, and in particular an ultra-thin watch, because of the use of an ultra-thin dial.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Printing Methods (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020207021963A KR20200104386A (ko) | 2018-02-05 | 2018-03-06 | 타임피스용 다이얼 및 이를 제조하는 방법 |
| US16/963,055 US12007718B2 (en) | 2018-02-05 | 2018-03-06 | Dial for a timepiece and method for manufacturing the same |
| KR1020217004321A KR20210020169A (ko) | 2018-02-05 | 2018-03-06 | 타임피스용 다이얼 및 이를 제조하는 방법 |
| CN201880086852.3A CN111615671A (zh) | 2018-02-05 | 2018-03-06 | 用于钟表的表盘及其制造方法 |
| JP2020539720A JP6997328B2 (ja) | 2018-02-05 | 2018-03-06 | 時計のダイアルおよびこれを製造するための方法 |
| CN202510194281.7A CN119902423A (zh) | 2018-02-05 | 2018-03-06 | 用于钟表的表盘及其制造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18155191.2A EP3521945B1 (fr) | 2018-02-05 | 2018-02-05 | Cadran pour pièce d'horlogerie et son procédé de fabrication |
| EP18155191.2 | 2018-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019149384A1 true WO2019149384A1 (fr) | 2019-08-08 |
Family
ID=61163614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2018/055510 Ceased WO2019149384A1 (fr) | 2018-02-05 | 2018-03-06 | Cadran pour pièce d'horlogerie et son procédé de fabrication |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12007718B2 (fr) |
| EP (1) | EP3521945B1 (fr) |
| JP (1) | JP6997328B2 (fr) |
| KR (2) | KR20210020169A (fr) |
| CN (2) | CN111615671A (fr) |
| WO (1) | WO2019149384A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2025009127A (ja) | 2023-07-07 | 2025-01-20 | セイコーエプソン株式会社 | 時計用文字板および時計 |
| CH721286A1 (fr) * | 2023-11-13 | 2025-05-30 | Arnold & Son Mft La Joux Perret S A | Procédé de préparation d'une pièce en ambre et pièce d'horlogerie comportant cette pièce. |
| JP2025122306A (ja) | 2024-02-08 | 2025-08-21 | セイコーエプソン株式会社 | 時計用部品、時計および時計用部品の製造方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH697210A5 (fr) | 2003-04-01 | 2008-06-25 | Artecad Sa | Cadran. |
| CH708838A2 (fr) * | 2013-11-15 | 2015-05-15 | Swatch Group Res & Dev Ltd | Cadran translucide ou semi-transparent pour afficheur caché. |
| EP3195755A1 (fr) * | 2016-01-22 | 2017-07-26 | Century Time Gems Ltd | Pièce d'horlogerie pourvue d'un élément d habillage décoratif en nacre |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03186789A (ja) * | 1989-12-15 | 1991-08-14 | Kawaguchiko Seimitsu Kk | 時計用文字板及びその製造方法 |
| JP2000087028A (ja) * | 1998-09-14 | 2000-03-28 | Akira Azuma | 蓄光体の製造方法 |
| JP2003194966A (ja) | 2001-12-27 | 2003-07-09 | Kawaguchiko Seimitsu Co Ltd | 時計用文字板及びその製造方法 |
| EP1672436B1 (fr) * | 2004-12-20 | 2008-03-19 | Rolex S.A. | Cadran pour pièce d'horlogerie et procédés de fabrication de ce cadran |
| JP5177729B2 (ja) * | 2005-03-30 | 2013-04-10 | シチズンホールディングス株式会社 | 計器類用表示板および計器類用表示板の製造方法 |
| US20080123473A1 (en) * | 2005-08-10 | 2008-05-29 | Seiko Epson Corporation | Electronic component and electronic device |
| JP2007047030A (ja) * | 2005-08-10 | 2007-02-22 | Seiko Epson Corp | 計時装置及び計時装置用文字板 |
| JP4920381B2 (ja) | 2006-11-22 | 2012-04-18 | シチズンホールディングス株式会社 | 時計用表示板 |
| JP2009236640A (ja) | 2008-03-26 | 2009-10-15 | Seiko Epson Corp | 時計用文字板の製造方法、時計用文字板および時計 |
| CN202183016U (zh) * | 2011-01-24 | 2012-04-04 | 铭泰工业有限公司 | 夜光表面体 |
| EP2796946A1 (fr) * | 2013-04-24 | 2014-10-29 | ETA SA Manufacture Horlogère Suisse | Pièce d'horlogerie comprenant un dispositif numérique d'affichage d'informations |
| EP2874024A1 (fr) * | 2013-11-15 | 2015-05-20 | The Swatch Group Research and Development Ltd. | Cadran nacre pour afficheur cache |
| JP6249798B2 (ja) | 2014-01-31 | 2017-12-20 | シチズン時計株式会社 | 太陽電池付き時計の文字板及び太陽電池付き時計 |
| CN206791844U (zh) * | 2016-03-16 | 2017-12-26 | 斯沃奇集团研究和开发有限公司 | 首饰或钟表的零件 |
-
2018
- 2018-02-05 EP EP18155191.2A patent/EP3521945B1/fr active Active
- 2018-03-06 KR KR1020217004321A patent/KR20210020169A/ko not_active Ceased
- 2018-03-06 WO PCT/EP2018/055510 patent/WO2019149384A1/fr not_active Ceased
- 2018-03-06 JP JP2020539720A patent/JP6997328B2/ja active Active
- 2018-03-06 US US16/963,055 patent/US12007718B2/en active Active
- 2018-03-06 KR KR1020207021963A patent/KR20200104386A/ko not_active Ceased
- 2018-03-06 CN CN201880086852.3A patent/CN111615671A/zh active Pending
- 2018-03-06 CN CN202510194281.7A patent/CN119902423A/zh active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH697210A5 (fr) | 2003-04-01 | 2008-06-25 | Artecad Sa | Cadran. |
| CH708838A2 (fr) * | 2013-11-15 | 2015-05-15 | Swatch Group Res & Dev Ltd | Cadran translucide ou semi-transparent pour afficheur caché. |
| EP3195755A1 (fr) * | 2016-01-22 | 2017-07-26 | Century Time Gems Ltd | Pièce d'horlogerie pourvue d'un élément d habillage décoratif en nacre |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119902423A (zh) | 2025-04-29 |
| KR20210020169A (ko) | 2021-02-23 |
| JP2021510820A (ja) | 2021-04-30 |
| EP3521945A1 (fr) | 2019-08-07 |
| US12007718B2 (en) | 2024-06-11 |
| US20200348625A1 (en) | 2020-11-05 |
| JP6997328B2 (ja) | 2022-01-17 |
| CN111615671A (zh) | 2020-09-01 |
| KR20200104386A (ko) | 2020-09-03 |
| EP3521945B1 (fr) | 2021-04-07 |
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