Dual laser coating apparatus and process

Details Dual laser coating apparatus and process Dual laser coating apparatus and process

2005-01-31

2010-02-16

Tadesse, Yewebdar T (Department: 1792)

Coating apparatus

Control means responsive to a randomly occurring sensed...

Temperature responsive

C118S641000, C118S642000, C118S308000

Reexamination Certificate

active

07661387

ABSTRACT:
An apparatus for applying and fusing a powder coating to substrates of various composition uses two lasers to accurately heat the coating to the optimum temperature. A second laser has less power and heats a smaller area than the first laser. Temperature control is enhanced by the ability to superheterodyne two lasers at separate frequencies. This allows for better absorption of certain materials being fused by the laser. Another common problem associated with laser processing occurs as the polymer heats up. During the heating process the spectral lines are Doppler broadened and slightly shifted. This can affect the absorption of a laser of a fixed wavelength. With the present invention, the optimum laser frequency can be turned to a more optimum frequency for absorption still with sufficient power for fast efficient thermal processing.

REFERENCES:
patent: 3907656 (1975-09-01), De Souza et al.
patent: 5306447 (1994-04-01), Marcus et al.
patent: 5405660 (1995-04-01), Psiuk et al.
patent: 5409537 (1995-04-01), Poullos et al.
patent: 5660746 (1997-08-01), Witanachchi et al.
patent: 5993554 (1999-11-01), Keicher et al.
patent: 6013336 (2000-01-01), Baumgart et al.
patent: 6802812 (2004-10-01), Walker et al.
patent: 2002/0034594 (2002-03-01), Shiveley
patent: 2003/0209196 (2003-11-01), Edwards et al.
patent: 2004/0043156 (2004-03-01), Emch
patent: 2005/0087522 (2005-04-01), Sun et al.
patent: WO 91/05885 (1991-05-01), None
patent: WO 94/22596 (1994-10-01), None

Affiliated with

Also associated with

Rating

Dual laser coating apparatus and process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual laser coating apparatus and process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual laser coating apparatus and process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4204729