Distinctness of Image (DIO) is a value indicates the surface quality of the paint film, which is closely related to the smoothness and gloss of the paint film. Poor DIO means bad decoration performance. DIO can be felt by vision or measured by instrument.
Common Cause
Coarse substrate, rough sanding paper or not fine enough sanding.
Paint applied runs vertically, lack of gloss, fails in fineness and opacity.
Bad spray booth condition lead to particles existing on the top and lack of gloss.
Bad atomization causes serious orange peel.
Insufficient thickness makes lack of saturation.
Repair
Compound and polish after the topcoat is completely dry or refinish with another good quality product.
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