Apparatus for developing latent electrostatic images

Details Apparatus for developing latent electrostatic images Apparatus for developing latent electrostatic images

1974-11-21

1977-07-05

Stein, Mervin

Coating apparatus

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

Electrostatic and/or electromagnetic attraction or...

118DIG5, 118648, 427 21, 118654, G03G 1508

Patent

active

040332926

ABSTRACT:
Powder cloud development apparatus for developing latent electrostatic images on an insulating member, such as a photoconductive layer, wherein a cloud of charged developer particles is introduced into the development chamber through a first port in the chamber wall and air is introduced through a second port in the chamber wall opposite said first port. A baffle is positioned above the ports and below the surface of the insulator, the baffle extending between the opposed walls. A development electrode comprising a series of parallel wires, electrically biased in the development area, is connected at each end to a continuous loop drive mechanism, the upper plane of the grid wire being closely spaced from the insulator surface. The wire to wire spacing with respect to wire diameter is sufficiently large to allow the passage of toner therethrough. The portion of the grid which is not in the image area adjacent the insulator surface is movably directed in a manner whereby there is no interference with development. A stationary cleaning system, located without the development area, cleans the grid wires as the grid wires are directed therethrough. The drive mechanism may be connected to a variable speed device to allow optimization of the electrode speed. The advantages of the aforementioned system include non-imaging of the grid wires since movement is in one direction and the grid effect is continually maintained since the grid wires are cleaned throughout the development cycle.

REFERENCES:
patent: B323666 (1975-01-01), Jeromin
patent: 2914221 (1959-11-01), Rosenthal
patent: 3169886 (1965-02-01), Simm
patent: 3640246 (1972-02-01), Jeromin et al.
patent: 3646910 (1972-03-01), Cade et al.
patent: 3842801 (1974-10-01), Larson et al.
patent: 3861354 (1975-01-01), Muntz et al.
patent: 3949703 (1976-04-01), Smith et al.

Affiliated with

Also associated with

Rating

Apparatus for developing latent electrostatic images does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for developing latent electrostatic images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for developing latent electrostatic images will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-571129