X-ray or gamma ray systems or devices – Specific application – Xeroradiography
Patent
1993-02-22
1994-08-23
Church, Craig E.
X-ray or gamma ray systems or devices
Specific application
Xeroradiography
378 28, B41M 500
Patent
active
053414098
ABSTRACT:
The invention relates to a method of generating X-ray images by means of a photoconductor which is provided on a conductive substrate and whose surface potential can be read by means of probes, and also relates to a device suitable for carrying out the method. In order to avoid image artefacts which could be caused by deviating sensitivities of the probes or by frequency-dependent distortions, after the charging of the photoconductor the substrate potential is varied during a test phase. Test data is generated which correspond to the spatial or temporal variation of the potential on the surface of the photoconductor; from this test data there is formed correction data which is stored in order to correct the image data of a subsequent X-ray exposure.
REFERENCES:
patent: 4134018 (1979-01-01), Weinkauf et al.
patent: 4939759 (1990-07-01), Rupp et al.
patent: 5097493 (1992-03-01), Hillen et al.
patent: 5162850 (1992-11-01), Nakashima
"Proceedings of SPIE" vol. 626, 1986, pp. 176-184.
Conrads Norbert
Hillen Walter
Maack Hanns-Ingo
Rupp Stephan
Schafer Ingo
Church Craig E.
Slobod Jack D.
U.S. Philips Corporation
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