Apparatus for electrostatic printing or coating and developer mi

Details Apparatus for electrostatic printing or coating and developer mi Apparatus for electrostatic printing or coating and developer mi

1974-02-22

1977-08-16

Stein, Mervin

Coating apparatus

With means to apply electrical and/or radiant energy to work...

Electrostatic and/or electromagnetic attraction or...

118627, 118658, 427 18, 427 25, B05B 508

Patent

active

040419010

ABSTRACT:
Electrostatic printing or coating apparatus including a main drum for transporting developer mix to an application or printing zone and having permanent magnet segments mounted within the drum for attracting developer mix to its exterior surface. An electric field is produced in the printing zone to provide movement of developer particles toward the article to be printed or coated and a field producing electrode is mounted within the drum adjacent the printing zone. A container conveyor extends past the printing zone to provide positioning of container portions to be coated, and a further drum having interior permanent magnet segment is positioned to remove developer mix from the main drum. The further drum may be rotated in the rotational direction opposite that of the main drum to reduce developer turbulence. Removal of the developer mix from the apparatus may be effected by a member pivotally mounted to open an aperture and having an edge engageable with a movable developer mix carrying member to provide diversion of the mix through the aperture.

REFERENCES:
patent: 2408143 (1946-09-01), Huebner
patent: 3180239 (1965-04-01), Shearer et al.
patent: 3202092 (1965-08-01), Childress
patent: 3306193 (1967-02-01), Rarey et al.
patent: 3330901 (1967-07-01), Adrenne et al.
patent: 3557751 (1971-01-01), Kushima
patent: 3713862 (1973-01-01), Winkless

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