版下の画線特性の解析　Ｉ　　手描き，清打ち，清刷りについて

DOI

書誌事項

タイトル別名
  • Analysis of image qualty for block copy. Part 1 Hand drawing, direct type impact and clean proof.
  • Hand drawing, Direct type impact and Clean proof
  • 手描き, 清打ち, 清刷りについて

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説明

There are three kinds of basic block copy; hand drawing, direct type impact and clean proof. To produce an accurate and clear image in film-making using any block copy, it is necessary to accurately grasp the state of gradation on the border of the image area and the non-image area. This study was intended to analyze this gradation condition using a microreflection density curve by an optical method. In the experment, roughness of paper that has much to do with the quality of the block copy image as well as the micro-reflection density of the image on each sheet of paper were measured. The micro-reflection density curve of three kinds of the block copies are shown in Fig. 3, Fig. 4 and Fig. 5. Each curve shows clearly the characteristic of the respective block copy. The results of the optical measurement of paper surface roughness are shown in Fig. 6. The angle made by an extension of the straight line which connects the density points 0.4 and 0.8 on the rising section of the micro-reflection density curve, and the ground line is taken as θ, and its tangent as γ, and this γ value is used to evaluate the property of the image. The results of measuremet are show in Table 2 to 15. These results indicate block copy properties.

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詳細情報 詳細情報について

  • CRID
    1390282679065670016
  • NII論文ID
    130004069072
  • DOI
    10.11413/nig1987.24.229
  • ISSN
    18824935
    09143319
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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