Incremental printing of symbolic information – Light or beam marking apparatus or processes
Patent
1994-03-09
1996-08-13
Tran, Huan H.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
347171, 347221, B41J 2435
Patent
active
055461174
ABSTRACT:
A magnetic recording layer is formed on one surface of a card-shaped base plate. A printing layer, for printing visible information such as "matters to be attended", is formed on the magnetic recording layer. A laser recording layer is formed on the other surface of the base plate. A visible image, which can be color-developed by radiation of a laser beam, can be recorded on the laser recording layer. The surface of the recording layer is coated with a transparent protection film, and a predetermined pattern is printed on the protection film. The laser recording layer includes a photothermic conversion material and a thermosensitive recording material. The photothermic conversion material has a major absorption wavelength corresponding to a major wavelength of the laser beam. A visible image can be recorded on the card by means of a laser beam without damaging a predetermined pattern on the protection film. Falsification of the visible image by means of a thermal pen can easily been discovered by checking a defect on the predetermined pattern. Therefore, falsification can be prevented.
Itoh Shin-ichi
Ohno Tadayoshi
Yamaguchi Takashi
Kabushiki Kaisha Toshiba
Tran Huan H.
LandOfFree
Portable storage medium and apparatus for processing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Portable storage medium and apparatus for processing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable storage medium and apparatus for processing the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1052062