Claims
- 1. A charging apparatus for applying a uniform electrostatic charge to a charge retentive surface, said apparatus comprising:a housing; an array of pin electrodes supported by said housing and positioned adjacent said surface in a non-contact relationship; said pin array comprises austenitic stainless steel and a power supply operatively coupled to said pin electrodes for supplying a predetermined current to each of said pin electrode, wherein said predetermined current is about 5 μA/pin and which co-acts with a protruding distance of the pins from the housing so as to optimize the charge uniformity and to minimize the ozone generated within said charging apparatus.
- 2. A charging apparatus according to claim 1, wherein each of said pin in said array protrudes a distance from the housing of 2.5 mm plus or minus 0.1 mm.
- 3. A charging apparatus according to claim 1, further comprising a generally U shaped shield connected to said housing and at least partially surrounding said array of pin electrodes.
- 4. A charging apparatus according to claim 1, further comprising a grid positioned across distal ends of said shield, said grid defining an effective charge length and an effective grid width.
Parent Case Info
Cross reference is made to the following applications filed U.S. Pat. No. 5,845,179, and U.S. App. No. 09/427,058 entitled “PIN CHARGE COROTRON FOR MINIMUM OZONE PRODUCTION” filed herewith which are hereby incorporated by reference.
US Referenced Citations (6)