| 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
|
* .wmf
|
* .eps
|
* .p65
|
* .pdf
|
* .pct
|
* .dwg
|
* .dsf
|
* .dxf
|
* .plt |
| * .ai |
|
|
Recommended
Graphic Paramenters
Graphic
Design
1. Solid colors can
be screened up to the edge of flat keytop.
2. On curved keytops, solid colors can be screened up to 0.015"
to the tangent point of the outer radius.
3. Distance from edge of the keypad to legend is 0.015".
4. Distance of matte legends to key is dependent on key height.
5. Minimum line weight for legends is 0.007".
6. Minimum text height is 0.050".
7. Color consistency is within 1 Delta for production run.
* Typical screening tolerances is 0.015".
Keytops
Considerations for Graphic Screening
8. Minimum radius
allowable for printing over the edge is 0.375".
9. On legend overun onto matte surface, a minimum transition radius
of 0.010" is required.
10. Maximum curvature depth for concave keytops with a minimum
radius of 0.375" is 0.060".
11. Maximum curvature height for convex keytops with a minimum
radius of 0.375" is 0.060.
Coatings
12. Abrasion resistant:
Si-Coat I / Si-Coat IV
13. Chemical resistance: Si-Coat II
14. Conductive: Si-Coat V
15. 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. |
