Method and apparatus for image quality diagnosis

Details Method and apparatus for image quality diagnosis Method and apparatus for image quality diagnosis

2011-01-11

2011-01-11

Moore, David K (Department: 2625)

Facsimile and static presentation processing

Facsimile

Facsimile measuring, testing, or calibrating

C358S474000

Reexamination Certificate

active

07869099

ABSTRACT:
For an automatic image diagnosis, toned images or residual toner existing on the photoconductive surface of a photoreceptor may be scanned with light energy provided by the raster scanning system. The light energy, which may be reflected from the photoreceptor surface, may be disturbed due to scattering/absorption in toned or damaged surface regions. The light energy may be directed to image sensors to obtain a spatial image map of the photoreceptor surface in conjunction with pixel clock information present for the raster scanning system. The evaluation may be made based on the spatial image map. Diagnostic and maintenance may then be applied to correct the defect and/or adjust a tone level for a latent image formed on the photoreceptor surface.

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