1.
    发明专利
    未知

    公开(公告)号:FR2391501A1

    公开(公告)日:1978-12-15

    申请号:FR7811800

    申请日:1978-04-14

    Applicant: IBM

    Abstract: HOLOGRAPHIC OPAQUE DOCUMENT SCANNER An opaque document scanner in which a moving hologram generates a locus of points from a stationary light beam on an opaque document and the same hologram or a similar one mounted for conjoint movement collects light energy reflected from the document at each point and focuses this energy onto a stationary detector to provide electrical signals corresponding to the information scanned on the document.

    HOLOGRAPHIC OPAQUE DOCUMENT SCANNER

    公开(公告)号:CA1099964A

    公开(公告)日:1981-04-28

    申请号:CA298326

    申请日:1978-03-02

    Applicant: IBM

    Abstract: HOLOGRAPHIC OPAQUE DOCUMENT SCANNER An opaque document scanner in which a moving hologram generates a locus of points from a stationary light beam on an opaque document and the same hologram or a similar one mounted for conjoint movement collects light energy reflected from the document at each point and focuses this energy onto a stationary detector to provide electrical signals corresponding to the information scanned on the document.

    VISUAL IMAGE RECORDING DEVICE
    3.
    发明专利

    公开(公告)号:CA1059229A

    公开(公告)日:1979-07-24

    申请号:CA253541

    申请日:1976-05-27

    Applicant: IBM

    Abstract: A direct view display device comprises a pair of conductive electrodes in spaced relationship and a recording medium having the properties of being both photo-ionizable and capable of electro-chemically producing colored species occupies the space between the electrodes. The display device is exposed to an optical pattern of radiation to which the recording material is sensitive to produce a latent image, and a potential is applied between the electrodes to produce a very dense image corresponding to the optical pattern. The image can be erased by reversing the potential between the electrodes so that the expose and enhance process can be repeated.

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