Keypad Graphics
All positive and reverse graphics are surface printedusing proprietary silicone inks that
are cross-link bonded to the keypad during the curing process. Screening can be done on
both sides of keypad when using clear silicone. Each graphic color represents an
additional step in the manufacturing process. Also, Pantone numbers are used for
specifyingcolors, but color chips can be matched.
Special attention must be given to keytop design when screening graphics on curved
surfaces. Generally, the larger the curvature radius is, the better. Also, single
curvature geometry is easier to print on than compound curves.
Digital Graphic Designs
Si Tech has the capability to accept graphic designs created with softwares like Adobe
Illustrator, Corel Draw, Micrograph, Autocad and using several file type formats
including:
- .cdr
- .eps
- .pdf
- .dwg
- .dxf
- .ai
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Recommended Graphic Paramenters.
Graphic Design
- Solid colors can be screened up to the edge of flat keytop.
- On curved keytops, solid colors can be screened up to 0.015" to the tangent point
of the outer radius.
- Distance from edge of the keypad to legend is 0.015".
- Distance of matte legends to key is dependent on key height.
- Minimum line weight for legends is 0.007".
- Minimum text height is 0.050".
- Color consistency is within 1 Delta for production run.
- Typical screening tolerances is 0.015".
Keytops Considerations for Graphic Screening
- Minimum radius allowable for printing over the edge is 0.375".
- On legend overun onto matte surface, a minimum transition radius of 0.010" is
required.
- Maximum curvature depth for concave keytops with a minimum radius of 0.375" is
0.060".
- Maximum curvature height for convex keytops with a minimum radius of 0.375" is
0.060.
Coatings
- Abrasion resistant: Si-Coat I / Si-Coat IV
- Chemical resistance: Si-Coat II
- Conductive: Si-Coat V
- Adhesive: Si-Prime
For detailed information about our coatings, please request our individual brochures with
all pertinent information including independent laboratory testing.
Additonal Information
If you required additional infromation our customer service and engineering department can
be reach via e-mail at: sales@sitech-corp.com,
eng@sitech-corp.com or by calling 757/887-8488
between 8:00am to 5:00pm EST.
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