Apparatus and method for metering toner in laser printers

Details Apparatus and method for metering toner in laser printers Apparatus and method for metering toner in laser printers

1993-12-23

1995-06-06

Moses, R. L.

Photocopying

Contact printing

Light boxes

430122, 118657, 355251, G03G 1309

Patent

active

054227089

ABSTRACT:
A method for increasing the page yield and transfer rate of a supply of toner material in a toner cartridge wherein an elongate, toner-dispensing gap in the toner cartridge is narrowed to within a range of approximately 0.002 inches to 0.004 inches, to thereby reduce the rate that the toner material is released in the printing process. Further enhancement occurs when the electrostatic charge density on a surface of a developer cylinder in the cartridge is reduced to a lowest setting. A drum in the cartridge may be replaced with a high performance organic photoconductor drum, and toner in the cartridge may be replaced with a fine granule, high quality toner having a granule size within a range of approximately 10.0 to 10.5 micrometers to further improve efficiency of toner transfer. This toner cartridge is then placed in a compatible laser printer for operation.

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"Understanding Toner Cartridge Technology", Recharger, May 1992.

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