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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.<br>
<p>I believe a laser jet is worse for doing this type of thing as it
will have alot of pin holes. <br>
</p>
<p>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.</p>
<p>If you want a vendor for making a mylar mask send me an email.<br>
</p>
<p>Chito Kendrick<br>
</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 8/7/2018 4:36 PM, Seong Jin Jang
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAD6e5hoXgqcU=bUzjbabq2Z3Jfd9_y=Npi-u-t43qgHw5PJuLw@mail.gmail.com">
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<div dir="ltr">Dear all,
<div><br>
</div>
<div>I am trying to make the photo lithography mask using
transparency film.</div>
<div>If you tried that before, can you share your experience?</div>
<div><br>
</div>
<div>For example,</div>
<div>Maximum resolution you reach</div>
<div>Printer model and specification you use</div>
<div>Film specification you use</div>
<div>Vendors who can make the mask</div>
<div>And, more!</div>
<div><br>
</div>
<div>I appreciate your help.</div>
<div><br>
</div>
<div>From Seong</div>
<div><br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>Seong Jin Jang</div>
<div>Nanofabrication Teaching Laboratory </div>
<div>Facility Specialist<br>
</div>
<div><span
style="text-align:left;color:rgb(34,34,34);text-transform:none;line-height:normal;text-indent:0px;letter-spacing:normal;font-family:arial,sans-serif;font-size:13.33px;font-variant:normal;word-spacing:0px;white-space:normal;font-stretch:normal;float:none;background-color:transparent;display:inline"><span
style="float:none;background-color:transparent;color:rgb(34,34,34);font:400
13.33px
arial,sans-serif;letter-spacing:normal;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;display:inline">302-831-3900</span></span></div>
<div><span
style="float:none;background-color:transparent;color:rgb(34,34,34);font:400
13.33px
arial,sans-serif;letter-spacing:normal;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;display:inline">310
DuPont Hall</span></div>
<div><span
style="float:none;background-color:transparent;color:rgb(34,34,34);font:400
13.33px
arial,sans-serif;letter-spacing:normal;text-align:left;text-decoration:none;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;display:inline">University
of Delaware</span></div>
<div><font size="2"><br>
</font></div>
</div>
</div>
</div>
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</div>
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</blockquote>
<br>
<div class="moz-signature">-- <br>
Chito Kendrick Ph.D. <br>
<br>
<a href="https://sites.google.com/site/chitokendrickphd/">Chito
Kendrick Website</a><br>
<a href="http://www.mtu.edu/microfabrication/">MTU
Microfabrication Website</a><br>
<br>
Managing Director of the Microfabrication Facility<br>
Research Assistant Professor<br>
Electrical and Computer Engineering<br>
Michigan Technological University<br>
Room 436 M&M Building<br>
1400 Townsend Dr.<br>
Houghton, Michigan 49931-1295<br>
<br>
814-308-4255<br>
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