パルプの白色度について

飯田 幾太郎

doi:10.2524/jtappij.20.4_207

書誌事項

タイトル別名

Whiteness, Brightness and Yellowness of Pulp Sheet

説明

This paper presents brief discussion on the relationship between Hunter Whiteness, Brightness and yellowness of pulp sheet. Hunter Whiteness (W) is defined as follow, W= [1- {(30√α²+β²) ²+ (1-G/2) ²} ^1/2] ×100 α;2.5 (A-G) /10G β; (G-B) /10G Brightness (B) is a numerical value of the reflection of pulp sheet to light in the blue portion of the spectrum, specifically to a wave length of 457 millimicrons. Yellowness (Y) is given as fellow, Y= (A-B) /G×100 Whiteness, Brightness and Yellowness of the about 150 samples; commercial, aged, and deteriorated pulps, were calculated from the measurements of Hunter Reflectmeter, respectively. It was confirmed that (W) and (B) were closely connected with each other. However, in the limited Brightness range the reliability of this relation was doubtful. It was found that Yellowness had a high intensive connection with Whiteness and was useful as a aviable measure to determine the pulp sheet colouring.

収録刊行物

紙パ技協誌

紙パ技協誌 20 (4), 207-210, 1966

紙パルプ技術協会

キーワード

詳細情報詳細情報について

CRID: 1390001206514701568

NII論文ID: 130003451815

DOI: 10.2524/jtappij.20.4_207

ISSN: 18811000; 0022815X

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CiNii Articles

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