Method and apparatus for registering a sheet

Details Method and apparatus for registering a sheet Method and apparatus for registering a sheet

1991-07-05

1992-06-23

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

250548, G03G 1500

Patent

active

051247607

ABSTRACT:
A method and apparatus for registering a sheet member with an indicia on the surface of a moving member which comprises means for driving a sheet member substantially tangentially of the moving member and between the moving member and a linear image sensor which is disposed adjacent the surface of the moving member. The linear image sensor senses the leading edge of the sheet member and, as the moving member is driven, the linear image sensor senses the passage of the indicia on the surface thereof as the member travels therepast. The distance between the indicia and the leading edge of the sheet member is sensed and an error signal is generated representative of the distance. The sheet member driving means is regulated so as to reduce the error signal and the sheet is attached to the moving member when the error signal is reduced to a predetermined value.

REFERENCES:
patent: 3888579 (1975-06-01), Rodek et al.
patent: 4310236 (1982-01-01), Connin
patent: 4416534 (1983-11-01), Kluger
patent: 4519700 (1985-05-01), Barker et al.

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