Introduction to some points of attention in key design Introduction to some points of attention in key design 1. Translucent color: TPU technology is very advantageous in the processing of translucent color, as shown in the following figure: [pic] The priority of selecting the translucent method is also ranked in the above order! 2. Advantages of the translucent method: Because TPU can be printed in a relatively complex manner, the light can be emitted from the font under the multiple refractions of the white ink, making the keyboard brightness uniform and soft. Please see the comparison below: [pic][pic]3. Gap: Due to the material properties (the main reason is that the tensile deformation rate of TPU is almost 0 and can be ignored), TPU is more conducive to making compact buttons than RUBBER, and the quality is more stable; Note: The minimum gap cannot be less than 0.2, 4. Points to note about the steps: 1. The steps have a shading effect (the relative position of Base printing - steps - panel); [pic]2. For symmetrical PK, attention should be paid to fool-proof design, especially OK key, such as: [pic] 3. The thickness of the step should generally be ≥0.35mm; 5. Special effect process: 1. Electroforming: It can have a good bright matte boundary effect (it must be understood that the matte surface is not electroformed, but sun-dried) and can make negative characters with sharp R angles on the buttons. Note: Only water plating can be used; some domestic factories are also trying laser engraving, but the technology is not mature yet, and only some Japanese manufacturers can produce it; the mold opening cycle is long and the price is high; 2. Vacuum plating: This type of electroplating can only show a bright surface effect, but not a matte effect; the coating is thin and not wear-resistant; it can be laser engraved, but the quality is difficult to control; it is easy to affect the R angle; 3. Mirror back printing: The process of printing mirror ink on the back of PK can make the front of PK have a mirror effect, but the disadvantage is: the mirror effect is greatly affected by PK shrinkage, printing technology, ink quality, screen mesh, etc. Even without the above influence, it is not as good as the sputtering effect, and it is not light-transmitting; 6. Metal Dome: It is recommended to use a three-layer Metal Dome with exhaust grooves, with convex points inside the dome. [pic][pic] 7. Gao Jian must prevent black exposure: ……
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