Title:
【発明の名称】媒体上に点状に照射するための方法及び装置
Document Type and Number:
Japanese Patent JPH08501640
Kind Code:
A
Abstract:
PCT No. PCT/DK93/00180 Sec. 371 Date Nov. 28, 1994 Sec. 102(e) Date Nov. 28, 1994 PCT Filed May 25, 1993 PCT Pub. No. WO93/24327 PCT Pub. Date Dec. 9, 1993A method and apparatus for the illumination of points on a medium by illuminating a plurality of perforations that are arranged parallel to the medium with light having a center wavelength lambda . The perforations have a cross-section so as to provide for each perforation a diverging bundle of rays formed by defracting the light. The medium is positioned from the perforations at substantially the transition of the diverging bundle of rays between the Fresnel region and the Fraunhofer region.
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Inventors:
Booth, niels
Application Number:
JP50009694A
Publication Date:
February 20, 1996
Filing Date:
May 25, 1993
Export Citation:
Assignee:
Prap Prepress A/S
International Classes:
B41J13/00; B43L13/00; B65H5/06; B65H5/22; B65H7/14; B65H23/24; G03B27/58; G03B41/00; G03F1/00; G03F7/20; H04N1/036; H04N1/08; (IPC1-7): G03B41/00; B43L13/00
Attorney, Agent or Firm:
Masao Okabe (9 others)