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[DPRG] Ink Jet Resist Application for PC Board Production

Subject: [DPRG] Ink Jet Resist Application for PC Board Production
From: Quinones, Jose jquinones at ti.com
Date: Tue Jan 26 11:10:14 CST 2010

I think the way these lasers work, is there is some optical element whose "light resistance" (if there is such a thing) is modulated like as if with a video signal. Hence, the laser output is not necessarily what reaches the medium, being lasered.

The reason why I say this, is because you can generate quasi 3D surfaces by applying gradients of color in the artwork, which the laser then interprets as scalable power settings.

This is of course the impression I got as I was shopping for the laser and it does not mean that I am correct.

It is also how the lasers that I worked with during Star Wars times (A long time ago and in a far far away place...) operated to trim capacitors and resistors during a pager manufacturing process. Yes, I told you Star Wars times!

Best regards,

Texas Instruments - Applications Engineer
13560 North Central Expressway
Dallas TX, 75243
Office: 1-214-567-7275
Mobile: 1-214-240-3179
From: dprglist-bounces at dprg.org [mailto:dprglist-bounces at dprg.org] On Behalf Of DeltaGraph at aol.com
Sent: Tuesday, January 26, 2010 10:56 AM
To: dprglist at dprg.org
Subject: Re: [DPRG] Ink Jet Resist Application for PC Board Production

Hey Rick,

Nice idea. Only, I want the convenience of making PCBs at home.
My laser built on XY table is too slow to raster scan compared to your Versalaser (ouch pang of Jealousy).

Maybe would not be too far out of the question for me to make a fast axis for it using mirror/lens on coarse ball screw OR doing galvo mirror scan.

Do you know if your Versalaser uses any post laser tube beam modulation controls?
That is, to turn beam on/off, is anything beyond tube current modulation being done?

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