HELMHOLTZ RESONATOR TO ENHANCE THE EFFICIENCY OF AERODYNAMIC CLEANING
Original Publication Date: 1980-Jun-30
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
For aerodynamic cleaning of the residual toner from a photoreceptor surface 4, the usual approach is to employ a steady flow of air through the vacuum cleaning shoe 5. While intuitively it might be thought that an unsteady flow would probably be more desirable than a steady flow, it has been shown that cleaning with pseudo-steady vortices in the air stream produces better results. It is also known that cleaning patterns exhibit striation marks in the direction of air flow, indicating that secondary, high-f requency fluctuation in the air velocity superimposed upon the steady air velocity in the channel area 6 caused by a low-magnitude disturbance in the pressure drop could produce favorable effects on cleaning. However, due to the narrow size of the channel area 6 in conventional cleaning shoes, the majority of the low-magnitude, high-frequency disturbances are dampened out, minimizing the effects of any periodic time-varying pressure disturbances on cleaning.