Photocopying – Including fiber optics
Patent
1986-11-28
1987-11-17
Salce, Patrick R.
Photocopying
Including fiber optics
355 14D, 366320, G03G 1500
Patent
active
047071079
ABSTRACT:
An electrographic development apparatus has a sump for receiving developer material including carrier particles and toner particles. A ribbon blender in the sump mixes the toner particles and carrier particles, circulates them within the sump and assists in transporting of the materials to a magnetic brush where the toner particles can be transferred to an electrostatic image on a photoconductor. The improved ribbon blender has an elongate helical ribbon positioned within the sump and extends along the sump with adjacent convolutions of the ribbon being spaced from each other. A plurality of buckets are secured to the ribbon between adjacent convolutions of the ribbon. The buckets on one convolution of the ribbon are spaced from the buckets on adjacent convolutions of the ribbon. The buckets can be open radially outwardly relative to the axis of rotation of the ribbon blender, and additional buckets can face radially inwardly to enhance mixing of developer material by picking up the material and transporting it axially and then dropping it near the blender's center line.
REFERENCES:
patent: 4131357 (1978-12-01), Forbes
patent: 4154372 (1979-05-01), Ricciardi
patent: 4610068 (1986-09-01), Schultz
patent: 4634286 (1987-01-01), Pike
Childress G. Herman
Eastman Kodak Company
Jones Judson H.
Salce Patrick R.
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