Patent
Laser marking of ceramic materials, glazes, glass ceramics and glasses
Fritz Dr. Herren,Manfred Hofmann +1 more
TLDR
In this article, a method of laser marking ceramic materials, glazes, glass ceramics and glasses that contain at least one radiation-sensitive additive, utilizing a laser beam as radiation energy source which is either applied to, or focused on, the surface of the material to be marked in accordance with the form of the graphic symbols to be reproduced, such that a change in color is induced at the irradiated areas, wherein the wavelength of said laser beam used as energy source is in the near UV and/or visible range, and the radiation sensitive additive is an inorganicAbstract:
A method of laser marking ceramic materials, glazes, glass ceramics and glasses that contain at least one radiation-sensitive additive, utilizing a laser beam as radiation energy source which is either applied to, or focused on, the surface of the material to be marked in accordance with the form of the graphic symbols to be reproduced, such that a change in color is induced at the irradiated areas, wherein the wavelength of said laser beam used as energy source is in the near UV and/or visible range and/or infra-red range, and the radiation-sensitive additive is an inorganic pigment.read more
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Patent
Method of controlled laser imaging of zirconia alloy ceramic lithographic member to provide localized melting in exposed areas
TL;DR: In this paper, a printing surface of the zirconia alloy ceramic is imagewise exposed to electromagnetic radiation such as from a laser under controlled conditions to provide localized "melting" of the exposed areas.
Patent
Laser beam machining method
Fumitsugu Fukuyo,Kenshi Fukumitsu,Naoki Uchiyama,Toshimitsu Wakuda,Kazuhiro Atsumi,Kenichi Muramatsu +5 more
TL;DR: In this paper, the authors presented a laser beam machining method characterized by comprising the steps of mounting a protective tape (25) on the surface (3) of a wafer (1a), radiating laser light (L) by using the back (21) as a laser light incidence plane with an optical converging point (P) positioned in a substrate (15), forming a melt processing region (13) for melt processing by multiphoton absorption.
Patent
Laser processing method and laser processing apparatus
TL;DR: In this article, the authors present a method for cutting a work without producing a fusing and a cracking out of a predetermined cutting line on the surface of the work, where a pulse laser beam is radiated on the predetermined cut line, and a modified area is formed inside the work along the determined cut line by moving the condensed point along the predetermined cutoff point, whereby the work can be cut with a rather small force by starting from the modified area.
Patent
Laser processing method
TL;DR: In this article, a laser processing method which can highly accurately cut objects to be processed having various laminate structures is provided, where the object is cut along the starting point region for cutting, the object 1 can be cut with a high accuracy.
Patent
Sub-surface marking
TL;DR: In this article, a method and apparatus for providing a body of material (14) with sub-surface mark in the form of an area of increased opacity to electromagnetic radiation is described.
References
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Patent
Laser markable molding compound, method of use and device therefrom
TL;DR: In this article, an improved laser markable material useful for encapsulation of electronic devices is obtained by adding TiO2 or TiO 2 +CrO 3 to common plastic encapsulants formed from a mixture of a resin+filler+carbon black+mold release agent.
Patent
Colored, dichroic, birefringent glass articles produced by optical alteration of additively-colored glasses containing silver and silver halides
Roger J. Araujo,Nicholas F. Borrelli,Jan Boguslaw Dr Chodak,George Bigelow Hares,Gerald Steward Dr Meiling,Iii Thomas Philip Dr Seward +5 more
TL;DR: In this paper, the absorptive and refractive properties of additively colored glasses containing an absorptive metallic silver phase and a separated silver halide phase are altered by irradiating the colored glasses with visible light.
Patent
Process for laser marking of pigmented systems
TL;DR: In this paper, the laser marking of high-molecular-weight organic material in the form of objects, sheets and films is performed using masks or by means of a guided beam under computer control, in which case, however, a pulsed or pulse-modified laser is used.
Patent
Laser marking of ceramic materials, glazes, ceramic glasses and glasses
TL;DR: In this article, a method for laser marking of at least one radiation-sensitive additive-containing ceramic materials, glazes, glass ceramics and glasses that contain a radiation sensitive additive, at least, wherein a laser is used as the energy rays, and the energy radiation corresponding to the shape of the applied character on the surface of the material to be labeled directed, optionally in focus, thereby forming at the irradiated areas discoloration.