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Development of Electrostatic Images

IP.com Disclosure Number: IPCOM000096973D
Original Publication Date: 1962-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Schaffert, RM: AUTHOR

Abstract

The device develops electrostatic images on surface 12 of imagebearing member 10, where impression member 43, coated with electroscopic particles 41, is impressed against surface 12.

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Development of Electrostatic Images

The device develops electrostatic images on surface 12 of imagebearing member 10, where impression member 43, coated with electroscopic particles 41, is impressed against surface 12.

Electroscopic particles 37 are fed from hopper 33 by metering device 34 onto rotatable roll 45 and then onto a second roll 43. The particles 41 on the surface of roll 43 are impressed against the surface 12 of drum 10 having electrostatic images 9 on it. The developing images 18 are transferred to print medium 19 where they are fixed in a fixing station 23 by application of heat. Potential, applied from source 56 through conductors 55 and 57 to drums 43 and 10, controls the rate and quantity of particles transferred from roller 43 to surface 12 of drum 10.

Electrostatic images are formed on surface 12 by corona discharge device 13, which applies an electrostatic charge uniformly over surface 12, and a photo image projector 15 and 16. This selectively dissipates the electrostatic charge in the portions of surface 12 which are exposed to light. Particles 18 which remain on the surface of drum 10 are cleaned by brush 26 at cleaning station 25.

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