Method and apparatus for sensing magnetic signal strength of xer

Details Method and apparatus for sensing magnetic signal strength of xer Method and apparatus for sensing magnetic signal strength of xer

1991-02-22

1994-08-23

Donovan, Lincoln

Photocopying

Contact printing

Light boxes

118712, 355246, 360128, G03G 2100

Patent

active

053411935

ABSTRACT:
A printing machine in which magnetically permeable marking particles develop a latent image recorded on a photoconductive member. A read head is positioned on the opposite of the photoconductive member to detect magnetic field intensity effects produced by the leading edge and the trailing edge of the marking particles on the characters recorded. The detected signals are used to control the magnetic quality of the developed image.

REFERENCES:
patent: 4097910 (1978-06-01), Lafevers et al.
patent: 4545066 (1985-10-01), Gascuel et al.
patent: 4563086 (1986-01-01), Knapp et al.
patent: 4924263 (1990-05-01), Bares

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