Method for monitoring copy quality

Details Method for monitoring copy quality Method for monitoring copy quality

1974-11-29

1976-07-13

Brammer, Jack P.

Gas separation: apparatus

Magnetic separating means

96 1R, 118 7, 118637, 355 3R, 356162, 356212, G03G 1314, B05B 502, G01B 1100

Patent

active

039691144

ABSTRACT:
A copy quality sensor for a reproduction machine of the type having a photoconductive member on which latent images of the original being copied are electrostatically formed and thereafter developed. The developed latent images are then transferred to copy sheets which may be then fused to provide a permanent image.
The aforesaid transfer of images from the photoconductive member to the copy sheets is effected by a transfer apparatus which includes a transfer roller. A portion of the photoconductive member and transfer roller are reserved for receipt of a test image, which is developed normally on the photoconductive member in addition to the image of the original. The developed test image is transferred directly to the surface of the transfer roller rather than to the copy sheet. A light source is arranged to impinge a beam against the transfer roller opposite the point on which the test image appears, and a photoelectric type pick-up is positioned to receive the beam reflected off of the transfer roller. The pick-up generates an output signal proportional to the intensity of the reflected light which in turn varies with the density of the test image developed on the transfer roller. The output of the pick-up is used to regulate addition of make-up toner to the developer in response to the density of the test image developed.

REFERENCES:
patent: 3094049 (1963-06-01), Snelling
patent: 3152012 (1964-10-01), Schaffert
patent: 3348521 (1967-10-01), Hawk
patent: 3348523 (1967-10-01), Davidson et al.
patent: 3698314 (1972-10-01), Grier
patent: 3832055 (1974-07-01), Hamaker
patent: 3837741 (1974-09-01), Spencer
patent: 3866572 (1975-02-01), Gundlach

Affiliated with

Also associated with

Rating

Method for monitoring copy quality does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for monitoring copy quality, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for monitoring copy quality will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1737310