Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1977-01-03
1978-10-10
Hix, L. T.
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
354324, 137 93, 118646, G03D 1300
Patent
active
041199898
ABSTRACT:
A system for controlling the concentration of developer solution, which includes a toner concentrate and a carrier, to be substantially equal to a predetermined concentration. The system, which is used in conjunction with a photocopying apparatus, comprises a source of light directed through the solution and a photosensor, on which the light source is focused, that generates an output signal proportional to the amount of light reaching it. A reference signal generator produces a reference signal substantially equal to the photosensor output signal that corresponds to the predetermined solution concentration. A comparator receives both the photosensor output and the reference signals and produces an error signal proportional to the difference between the two. The error signal is used to modulate the amount of time during which a servo mechanism is operated to add toner concentrate to the solution and thereby control solution concentration.
REFERENCES:
patent: 3388652 (1968-06-01), Parrent
patent: 3494328 (1970-02-01), Maloney
patent: 3561344 (1971-02-01), Frutiger et al.
patent: 3712203 (1973-01-01), Kishi et al.
patent: 3791744 (1974-02-01), Erny et al.
patent: 4021832 (1977-05-01), Krehbiel et al.
patent: 4023193 (1977-05-01), Schroter et al.
Carvalko Joseph R.
Tolmie, Jr. Robert J.
Hix L. T,.
Mathews Alan
Pitney-Bowes Inc.
Scribner Albert W.
Soltow, Jr. William D.
LandOfFree
System for controlling concentration of developer solution does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for controlling concentration of developer solution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for controlling concentration of developer solution will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1769450