Image registration system
AssigneeXerox Corporation
InventorShyshung S. Hwang
Life of this patent
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Abstract
An electrophotographic printing machine utilizes an improved image registration system that forms and senses image registration indicia to control a subsequent transfer of a visible image. A first transfer station transfers registration indicia, previously formed on a first photoconductive member and transferred therefrom, onto a receiving member. A sensor monitors the registration indicia on the receiving member and generates a control signal indicative thereof. A second transfer station, responsive to the control signal, transfers a visible image, previously formed on a second photoconductive member and transferred therefrom, to the receiving member.
Claims30
An apparatus for providing image registration, comprising:
- a receiving member;
- a first photoreceptor;
- first means for forming a first visible image and image registration indicia on said first photoreceptor;
- first means for transferring the first visible image and the visible image registration indicia from said first photoreceptor to the receiving member;
- a second photoreceptor;
- second means for forming a second visible image on said second photoreceptor;
- means for sensing the visible image registration indicia on said receiving member and generating a control signal indicative thereof;
- and
- second means, responsive to the signal from said sensing means, for transferring the second visible image from said second photoreceptor to said receiving member.
An electrophotographic printing system of the type in which image registration is provided for a visible image formed on a photoreceptor and transferred to a receiving member, wherein the improvement comprises:
- a first photoreceptor;
- first means for forming a first visible image and image registration indicia on said first photoreceptor;
- first means for transferring the first visible image and the visible image registration indicia from said first photoreceptor to the receiving member;
- a second photoreceptor;
- second means for forming a second visible image on said second photoreceptor;
- means for sensing the visible image registration indicia on said receiving member and generating a control signal indicative thereof;
- and
- second means, responsive to the signal from said sensing means, for transferring the second visible image from said second photoreceptor to said receiving member.
Dependencies are inferred from the claim text.