| 摘要 |
An apparatus for enhancing toner release from an image bearing member in an electrostatographic printing machine, including a resonator suitable for generating vibratory energy arranged in line contact with the back side of the image bearing member for uniformly applying vibratory energy to the image bearing member. The resonator includes a piezoelectric transducer and a waveguide assembly coupled to the transducer for directing high frequency vibratory energy to the image bearing member. A coupling cover is interposed between the waveguide assembly and the image bearing member with an adhesive layer situated between the coupling cover and the waveguide assembly for bonding the waveguide assembly to the coupling cover. In another embodiment, the resonator assembly includes a vacuum apparatus including a vacuum plenum defining an opening adjacent the image bearing member, the vacuum apparatus providing sufficient force at the vacuum plenum opening to draw the image bearing member toward the waveguide assembly and a coupling cover including a pair of resilient cap members, wherein each cap member is mounted on the vacuum plenum along the opening thereof so as to be interposed between the vacuum plenum and the image bearing member.
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