Electrophotography – Control of electrophotography process – Of plural processes
Patent
1996-03-08
1998-07-07
Royer, William J.
Electrophotography
Control of electrophotography process
Of plural processes
347116, 399301, G03G 1500
Patent
active
057782806
ABSTRACT:
An image forming apparatus including a plurality of latent image forming units for forming latent images on a plurality of image carriers, a plurality of developing devices for forming developed images by developing the latent images formed by the latent image forming units, and an image conveyer belt for conveying the developed images formed by the developing devices. The image forming apparatus further contains a registration sensor for detecting the developed images conveyed on the image conveyer belt, and the registration sensor has a light source, a first optical fiber element for guiding the light from the light source and illuminating the image conveyer belt to obtain the reflected light, a second optical fiber element for guiding the reflected light in a specified direction, and a light receiving element for converting the reflected light guided by the second optical fiber element into an electric signal. The image forming apparatus has a computing device for a computing misregistration correcting amount to correct the misregistration of each of the developed images conveyed by the image conveyer belt based on the detecting result of the registration sensor and executes the correction of the misregistration based on the computed result of the computing device.
REFERENCES:
patent: 4912491 (1990-03-01), Hoshino et al.
patent: 4916547 (1990-04-01), Katsumata et al.
patent: 5418556 (1995-05-01), Andrews
patent: 5452073 (1995-09-01), Kataoka
patent: 5523823 (1996-06-01), Ashikaga
patent: 5587771 (1996-12-01), Mori et al.
Ide Naoaki
Komiya Kenichi
Tanimoto Koji
Kabushiki Kaisha Toshiba
Royer William J.
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