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Patent Searching and Data


Title:
IMAGE INFORMATION READING METHOD AND DEVICE
Document Type and Number:
Japanese Patent JP2001350229
Kind Code:
A
Abstract:

To lessen the dark current noise of a detector of an image information reader for reading image information by scanning a stimulable phosphor sheet with exciting light and detecting the stimulable luminous body emitted from the sheet with an image detector.

This device is provided with a dark current correcting circuit 90 which suppresses the non-image components included in data D4 formed by digitalizing a signal S2 outputted from the detector 223 while beam light L3 scans the inside of an image forming region by using, as data for correction, the signal values Da and Db of a front edge segment A and rear edge segment B outside the image recording region on the sheet 211 obtained by detecting the signal S2 outputted from the detector 223 when the light beam L3 scans the segments exclusive of the image recording region.


Inventors:
YASUDA HIROAKI
Application Number:
JP2001000071337
Publication Date:
December 21, 2001
Filing Date:
March 14, 2001
Export Citation:
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Assignee:
FUJI PHOTO FILM CO LTD
International Classes:
G03B42/02; G06T1/00; H04N1/04; (IPC1-7): G03B42/02; G06T1/00; H04N1/04
Attorney, Agent or Firm:
Seiji Yanagida (1 person outside)