US PATENT SUBCLASS 399 / 170
.~.~ Corona

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


399 /   HD   ELECTROPHOTOGRAPHY

130  DF  IMAGE FORMATION {30}
168  DF  .~ Charging {3}
170.~.~ Corona {3}
171  DF  .~.~.~> Having grid
172  DF  .~.~.~> Having case
173  DF  .~.~.~> Needle type

DEFINITION

Classification: 399/170

Corona:

(under subclass 168) Subject matter wherein a high voltage is applied to a conductor (e.g., wire) which causes a current to flow to the member to be charged by ionization of the air or gas surrounding the conductor.

(1) Note. This condition is not sufficient to cause sparking.

(2) Note. This subject matter may include an arrangement to supply new corona wire.

SEE OR SEARCH CLASS

250, Radiant Energy,

324, 325 for corona irradiation and charging of moving objects.

361, Electricity: Electrical Systems and Devices,

225+, for electrical charging of objects and materials, particularly subclass 235 for having a specific power supply.