標準號：BS EN ISO 8254-1-2009
中文標準名稱：紙和紙板.鏡面光澤度的測定.用TAPPI方法,會聚光束75°角測定光澤度
英文標準名稱：Paper and board - Measurement of specular gloss - 75 degree gloss with a converging beam, TAPPI method
標準類型：Y30
發(fā)布日期：2009/4/30 12:00:00
實施日期：2009/4/30 12:00:00
中國標準分類號：Y30
國際標準分類號：85.060
引用標準：ISO 186;ISO 187
適用范圍：This part of ISO 8254 specifies a method for measuring the specular gloss of paper at an angle of 75° to thenormal to the paper surface. Although its chief application is to coated papers, it may also be used for glossyuncoated papers such as supercalendered papers.NOTE 1 This method does not provide an assessment of image-reflecting quality and should not be used for castcoated,lacquered, highly varnished or waxed papers or for high-gloss ink films. For these purposes, measurements atother angles, for example 20°, are preferred, although the present method has been shown to be suitable for glossmeasurements of most other ink films on paper or paperboard. Differences in the colour and the diffuse reflectances ofthese ink films have a negligible effect on gloss measured according to this part of ISO 8254. For example, measurementson white and black surfaces which are otherwise identical give a value for the white surface that is less than one gloss unithigher than the value for the black surface.NOTE 2 The methods specified in ISO 2813, Paints and varnishes — Determination of specular gloss of non-metallicpaint films at 20°, 60° and 85°, may be applicable to certain grades of paper.