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TREK-305R User Manual 14
B.1 Enviroment Specification
Condition: Tested after leaving the chemical on the surface for 3 minutes being wiped
off by cloth.
Judgment: Must be no effect in appearance.
B.2 Mechanical Characteristics
Figure 1 Testing rod 1 Figure 2 Testing rod 2
B.3 Mechanical Characteristics
Chemical Resistance
(top surface)
Toluene, Acetone, Methanol, Alcohol, Ethylacetate, Artificial sweat,
Petroleum ether
Operating Life Input (finger) 10,000,000 hits (Note 1)
Character Input (pen) 100,000 characters (Note 2)
Note! 1. Testing rod (Figure 1), Load 250 g, Cycle 2hit/sec;
2. Testing rod (Figure 2), load 250 g, Input size 10 x 10 mm, Input
character A to Z / minute.
These (finger and pen) are tested at same point of the panel surface,
and all point will become dis-functin after test.
Silicon Rubber
(Hardness: 60°)
Tip: R = 4.0
Polyacetal resin
Tip: R = 0.8
Pressing Force Max 100N (Note 3)
Activation Force 0.05N to 1.0N
Surface Hardness Over 3H (by JIS pencil hardness) (Note 4)
Note! 3. Testing with rubber rod. (Ø 16 mm, Hardness 60°), Time: 5 s, Center
of LCD surface. If you apply pressure over 100N, white spots and
dark spots will be occured.
4. Testing pressure is 750 g. If you use 3H hardness pencil with under
750 g pressure, the surface will not be damaged. But using a 4H
hard pencil, the surface may be damaged. Please use a 3H pencil
or under with under 750 g pressure.