Gloss Meter - OpTest

Gloss is one of the important factors for printing paper: the reflection at 75 degrees is widespread for general uses, except for papers of high gloss. The principle of this machine is as follows: Gloss amount of normal reflections is measured by irradiating light beams to the specimen at 75 degrees.The ratio of this amount to that of normal reflection from the reference black glass surface is determined and the obtained ratio is given as gloss degree. The machine, according to JIS P-8142.Z-8741, is designed to measure the gloss degree of mirror surfaces at an angled of 75 degrees, with the following steps: light is irradiated to the specimen, and the light receiver receives a reflection light. Converts it to electric signals and amplifies to display the gloss degree on a digital meter.This machine is provided with an option of a vacuum specimen-fixing system to hold the specimen flat: this improves measurement precision and ease of handling. An optional printer also is provided to print out measurement data.