Dear Dr. John,
             The Linotronic 330 printer gives a better resolution, of
about 12 microns. However if u draw circles then there are problems as it
makes a circle with pixels hence the border is a closely packed right
angles.
             There is also SciTek printer which has given me successful
results upto 5 microns, which als I suspect is due to problems with my
aligner used to transfer the pattern on HRP plates. It should actually
give me a better resolution.

             This printer is a common feature of quite a few printers in
Bombay ( India ) who do High-end 4 color offset printing and positive
making jobs. The principle of this machine is classified, but I suspect it
works on thermal ( IR ) exposure principal - excuse me if I am  wrong.

Regards
Amit Shiwalkar






On Thu, 4 Feb 1999, John R Lodmell wrote:

>       I have recently used a commercial printer to make a mask on printer's
> film.  He used a Linotronic printer with 2540 dpi.  The mask gave us about 25
> micron resolution, which I understand is pretty typical.
>       I would really like about 10 micron resolution, but our
> photolithography system does not have reduction capability (only 1:1).  Does
> anyone know how to get closer to 10 microns?  Try to find higher dpi
> capabilities?  Commercially available reduction to make a new mask from the
> existing mask?
>       Any suggestions would be appreciated.
>
> John Lodmell
> John.Lodmell@aero.org
>
>

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Amit Shiwalkar                         Dept. Of Bio-Medical Engineering.
3,Vasant,                              IIT Bombay.
Carter Road,                           Powai, Bombay-400076
Khar,
Bombay(Mumbai)-400052
INDIA.


                     Email: amits@cc.iitb.ernet.in

" Reality Is a Figment of IMAGINATION "
                                ----------- Amit Shiwalkar

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