Recorders – Record receiver deforming
Patent
1985-02-08
1986-09-09
Goldberg, E. A.
Recorders
Record receiver deforming
346140R, G01D 1518
Patent
active
046112162
ABSTRACT:
A charge detecting electrode unit is disclosed which is coupled to a platen shaft of an ink jet printer so as to be rotatable relative thereto for detecting a deflected position of charged ink particles. It includes a housing having an internal space in which a charge detecting electrode is centrally located. The housing is formed with an opening which receives flying ink particles, in its front surface. An electrically conductive layer is formed on and continuously extends across the internal wall surfaces and the external surface of the housing around the opening, and an electrically conductive and water absorbing sheet is attached to the outer periphery of the housing and is in contact with the conductive layer located around the opening which is connected to a grounding wire. The housing also includes a compartment which houses a water absorbing pad and which is open to the exterior of the housing. The water absorbing sheet extends into the compartment, and the pad housed within the compartment is in contact with the sheet. The compartment is normally closed by a closure. An isolating plate is disposed in the opening to divide it into an upper and a lower area, thus preventing an ink which has found its way into the lower area from being dispersed into the upper area.
REFERENCES:
patent: 3596275 (1971-07-01), Sweet
patent: 4430658 (1984-02-01), Fukazawa et al.
patent: 4434428 (1984-02-01), Hokine et al.
Araki Shigeyuki
Ishikawa Chuji
Goldberg E. A.
Preston Gerald E.
Ricoh & Company, Ltd.
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