Laser marker and method of laser marking
US4818835A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1988 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Feb 26, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/007
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A laser marker comprises a liquid crystal device for displaying pattern information representative of a character to be printed on an object to be worked, a pulse laser oscillator, a liquid crystal device power switch connected to the liquid crystal device, a laser switch connected to the pulse laser oscillator, and timer circuits operative to retard the operation of the laser switch with respect to that of the liquid crystal device power switch, whereby after the character to be printed is displayed properly on the liquid crystal device, a pulse laser beam is irradiated on the liquid crystal device so as to sharply print the character on the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.