Measurement and control of high frequency banding in a...

Details Measurement and control of high frequency banding in a... Measurement and control of high frequency banding in a...

2007-10-16

2007-10-16

Tran, Huan (Department: 2861)

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

C399S015000, C399S049000, C399S072000

Reexamination Certificate

active

10852243

ABSTRACT:
A method of measuring and controlling high frequency banding, the method includes creating a test pattern, sensing the test pattern with optical sensors, determining a beat frequency based on the sensed test pattern, and determining the frequency, phase and amplitude of high frequency banding based on the beat frequency. An exemplary embodiment of a feedback control method for controlling high frequency banding includes creating a test pattern, sensing the test pattern with optical sensors, measuring high frequency banding and adjusting the imaging parameters based on the measured high frequency banding in order to decrease the extent of high frequency banding. Moreover, an exemplary embodiment of a system for measuring high frequency banding includes an image marking device having a receiving member, optical sensors arranged on the receiving member, and a controller that is functionally coupled to the optical sensors and to the marking device.

REFERENCES:
patent: 7120369 (2006-10-01), Hamby et al.

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