BLACK SUB-ANODIZED MARKING USING PICOSECOND BURSTS

A method includes generating a plurality of pulse bursts with a predetermined quantity of intra-burst pulses in each pulse burst and a temporal spacing between the intra-burst pulses, and with a pulse burst frequency, and scanning the pulse bursts across an anodized target at a scan rate so that the...

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Bibliographic Details
Main Authors Dittli Adam, Gross Ken
Format Patent
LanguageEnglish
Published 06.07.2017
Subjects
BASIC ELECTRIC ELEMENTS
CLADDING OR PLATING BY SOLDERING OR WELDING
COLOUR PRINTING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
DEVICES USING STIMULATED EMISSION
ELECTRICITY
LINING MACHINES
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
SOLDERING OR UNSOLDERING
STAMPS
TRANSPORTING
TYPEWRITERS
WELDING
WORKING BY LASER BEAM
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Summary:A method includes generating a plurality of pulse bursts with a predetermined quantity of intra-burst pulses in each pulse burst and a temporal spacing between the intra-burst pulses, and with a pulse burst frequency, and scanning the pulse bursts across an anodized target at a scan rate so that the pulse bursts overlap at the anodized target by an amount that is above an overlap damage threshold and the intra-burst pulses provide a peak power and peak fluence that are below an ablation threshold of the anodized target so as to produce a laser mark on the anodized target with an L value of less than or equal to 30 and without a damage to an anodized layer of the anodized target.
Bibliography:Application Number: US201715396738