[labnetwork] Photo lithography mask using transparency film

[Chito Kendrick]

When our filmstar system was down I did made some mylar masks with an 
inkjet HP printer I got from Walmart and that would get to 100-150 um 
feature size lines, but there is a lot of splatter of ink as well it 
would need multiple passes to get a fully opaque area. I think it could 
do 1200 dpi. You use to be able to control the level of black on some 
printers, but this one did not allow it - it would mean you could do 
just a single pass. The transparency film was whatever Walmart had at 
that time, nothing special - it did have some features/texture already 
on it from the manufacturing process.

I believe a laser jet is worse for doing this type of thing as it will 
have alot of pin holes.

There are alot of vendors that can make you a mylar mask and depending 
on feature size they can be as cheap as $25 for a letter size area - I 
have masks with features down to 10 um, but after that you would need a 
chrome mask. We have a filmstar photoplotter that can do down to 25 um 
(~4000 dpi) and you can get a newer version that meant to do 5 um. This 
requires a darkroom and photosensitive coated mylar films as our one 
uses a red laser.

If you want a vendor for making a mylar mask send me an email.

Chito Kendrick



On 8/7/2018 4:36 PM, Seong Jin Jang wrote:
> Dear all,
>
> I am trying to make the photo lithography mask using transparency film.
> If you tried that before, can you share your experience?
>
> For example,
> Maximum resolution you reach
> Printer model and specification you use
> Film specification you use
> Vendors who can make the mask
> And, more!
>
> I appreciate your help.
>
> From Seong
>
>
> -- 
> Seong Jin Jang
> Nanofabrication Teaching Laboratory
> Facility Specialist
> 302-831-3900
> 310 DuPont Hall
> University of Delaware
>
>
>
> _______________________________________________
> labnetwork mailing list
> labnetwork at mtl.mit.edu
> https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork

-- 
Chito Kendrick Ph.D.

Chito Kendrick Website <https://sites.google.com/site/chitokendrickphd/>
MTU Microfabrication Website <http://www.mtu.edu/microfabrication/>

Managing Director of the Microfabrication Facility
Research Assistant Professor
Electrical and Computer Engineering
Michigan Technological University
Room 436 M&M Building
1400 Townsend Dr.
Houghton, Michigan 49931-1295

814-308-4255
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