This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation and storage of inkjet printing lamp box films. This standard applies to inkjet printing lightbox films made by coating an image-receiving layer on a polyester base. This standard does not apply to UV pigment inks.
HG/T 4398-2012 Referenced Document
GB/T 11500 Photography.Density measurement.Part 2:Geometric conditions for transmission density