Homebrew PCBs

If you use f-theta lens in front  of rotating  mirror this solves the problem .


--- On Tue, 11/24/09, javaguy11111 <javaguy11111@...> wrote:

From: javaguy11111 <javaguy11111@...>
Subject: [Homebrew_PCBs] Re: Blue Laser LDI Dry Film Results
To: Homebrew_PCBs@yahoogroups.com
Date: Tuesday, November 24, 2009, 3:47 PM







 



  


    
      
      
      I would think using a mirror like that would cause  the sides of the exposed area to not be vertical.



--- In Homebrew_PCBs@ yahoogroups. com, "lmri2071" <lmri2071@.. .> wrote:

>

> This is wonderful !

> 

> I spent seven years to see something like that.

> 

> I think, that the next step would be use a polygonal mirror. Maybe, trying to modify a laser printer.

> 

> Lucho 

> 

> --- In Homebrew_PCBs@ yahoogroups. com, "Volkan" <v_sahin@> wrote:

> >

> > I did some tests on dry film that is exposed with blue laser. You can find the result files under http://tech. groups.yahoo. com/group/ Homebrew_ PCBs/files/ BlueLaser_ LDI_Volkan/ folder.

> > The minimum feature size that I achieved is 2.8/2.8  mil width and space. There is no problem to print 1.4/1.4 mil width and space but development of the dry film is a little bit problematic and it is not possible to do it with simple tray technique. The film that I'm using has a thickness of 1.5 mil, according to some google results the limit is 1.5*film thickness, so if it is true it seems my results are almost at the limit. 

> > 

> > Volkan

> >

>





    
     

    
    


 



  






      

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