Original Publication Date: 1975-Dec-01
Included in the Prior Art Database: 2005-Mar-02
AbstractThis corona cleaner operates to clean both the corona wires and the internal surface of the corona shield, and does so without placing a bending force on the corona wires.
This corona cleaner operates to clean both the corona wires and the internal surface of the corona shield, and does so without placing a bending force on the corona wires.
Fig. 1 shows an end sectional view of the corona. Fig. 2 shows a partial side sectional view of the corona.
Two corona wires 10 and 11 are supported within metallic shield 12 by insulator end plates, not shown. Cleaning block 13 is formed of an insulating member 14 whose shape, best seen in Fig. 2, maximizes the leakage path length from the wires to the shield 12. Member 14 supports two cleaning pads 15 and 16 which imprison wires 10 and 11, respectively. Insulating rod 17 is operable to move cleaning block 13 back and forth along the length of the corona to clean the same.
Block 13 supports a resilient cleaning pad 18 which is compressed between shield 12 and the upper portion of block 13. This pad cleans the internal surface of the shield 12.
The side walls of the shield 12 include longitudinally extending grooves 19 and 20, Fig. 1, which cooperate with extending bosses 21 and 22 formed in the cleaning block 13. The force generated by compression of pad 18 causes these bosses to slide along the lower surface of grooves 19 and 20. Thus, grooves 19 and 20 prevent the application of a bending force to wires 10 and 11.