METHOD FOR MANUFACTURING GLASS PLATE, METHOD FOR CHAMFERING GLASS PLATE, AND METHOD FOR MANUFACTURING MAGNETIC DISK
The following summary describes a Laos Patent titled “METHOD FOR MANUFACTURING GLASS PLATE, METHOD FOR CHAMFERING GLASS PLATE, AND METHOD FOR MANUFACTURING MAGNETIC DISK”, filed by HOYA CORPORATION on 2019-12-02; current status: Registered. Identifiers include application No. P/782; DIP id LAP782; protection kind Patent - PCT National Phase. Key dates: publication 2023-10-20; grant 2023-10-17; expiry reference 2039-12-02. Classification: B23K 26/354、C03B 29/02、C03C 19/00、G11B 5/73、G11B 5/84. Inventor(s)/designer(s): Shuhei AZUMA. Abstract hint: With a method for manufacturing a glass plate in which shape processing is performed on an edge surface of a glass plate having a disk shap…. Unique application identifiers, holders and classification text are surfaced here to reduce near-duplicate IP landing pages; always verify against the competent office.
P/782
Mark
Key facts
- Type
- Patent
- App. no.
P/782- Status
- Registered
- Applicant
- HOYA CORPORATION
- Agent
- Tilleke & Gibbins Lao Co., Ltd.
- Filing date
- 2019-12-02
- Reg. no.
P/782- Publication
- 2023-10-20
- Registration / grant
- 2023-10-17
- Expiry
- 2039-12-02
- Nice / IPC classes
- B23K 26/354 · C03B 29/02 · C03C 19/00 · G11B 5/73 · G11B 5/84
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination
-
Substantive examination
-
Published
-
Granted
Related records
Linked from the LaoBiz.com company databaseSimilar Patent
Abstract
With a method for manufacturing a glass plate in which shape processing is performed on an edge surface of a glass plate having a disk shape, the disk-shaped glass plate has a main surface and an edge surface that is perpendicular to the main surface. The method includes a step of processing the edge surface into a target shape by irradiating the edge surface with a laser beam while moving the laser beam relative to the edge surface in a circumferential direction of the glass plate having the disk shape. A cross sectional intensity distribution of the laser beam with which the edge surface is irradiated is a single mode, and W1 > Th holds true and Pd x Th is in a range of 0.8 to 3.5 [W/mm] when a width of luminous flux of the laser beam in a thickness direction of the glass plate at an irradiation position of the edge surface is W1 [mm], a thickness of the glass plate is Th [mm], and a power density of the laser beam is Pd.
With a method for manufacturing a glass plate in which shape processing is performed on an edge surface of a glass plate having a disk shape, the disk-shaped glass plate has a main surface and an edge surface that is perpendicular to the main surface. The method includes a step of processing the edge surface into a target shape by irradiating the edge surface with a laser beam while moving the laser beam relative to the edge surface in a circumferential direction of the glass plate having the disk shape. A cross sectional intensity distribution of the laser beam with which the edge surface is irradiated is a single mode, and W1 > Th holds true and Pd x Th is in a range of 0.8 to 3.5 [W/mm] when a width of luminous flux of the laser beam in a thickness direction of the glass plate at an irradiation position of the edge surface is W1 [mm], a thickness of the glass plate is Th [mm], and a power density of the laser beam is Pd.
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