Device for aiding in measuring pigmented marking particle level in a magnetic brush development apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5005516
SERIAL NO

07444257

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An improved magnetic brush development apparatus for applying developer material to a latent electrostatic image wherein measurement of toner level is facilitated. The apparatus includes a housing defining a sump portion adapted to contain a supply of developer material, and a magnetic brush located substantially within the housing in spaced relation to the sump portion for applying developer material to the latent image. A feed mechanism located within the housing between the sump portion and the magnetic brush transports developer material from the sump to the magnetic brush, and a mechanism located in the sump portion agitates developer material and transports developer material to the feed mechanism. Developer material in the sump portion is replenished by a device which includes a reservoir for replenishment material adjacent to the sump portion, a flow communication path between the reservoir and the sump portion, and a device for selectively controlling flow of replenishment material through the path. Measuring the level of replenishment material in the reservoir is facilitated by a material monitor located in the bottom of the reservoir immediately upstream of the flow communication path, the surface of the monitor being periodically swept to assure accurate measurement of replenishment material level.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EASTMAN KODAK COMPANYROCHESTER, NY5178

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Speer, Larry W Hilton, NY 3 19

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EASTMAN KODAK COMPANY (1)
* 4671207 Magnetic brush development apparatus 25 1985
 
Minolta Camera Kabushiki Kaisha (1)
* 4809034 Developing device 21 1987
 
FUJITSU LIMITED (1)
* 4739365 Developing unit for an electro-photographic apparatus 9 1987
 
Mita Industrial Co., Ltd. (1)
* 4468111 Developing device for use on an electrostatic copying apparatus 15 1982
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 2005/0158,366 Method and apparatus for producing uniform small portions of fine powders and articles thereof 1 2005
* 2009/0232,886 ORAL DOSAGE COMBINATION PHARMACEUTICAL PACKAGING 12 2009
* 2010/0037,818 METHOD AND APPARATUS FOR PRODUCING UNIFORM SMALL PORTIONS OF FINE POWDERS AND ARTICLES THEREOF 0 2009
 
FUJI XEROX CO., LTD. (2)
* 8953989 Developing device and image forming apparatus 0 2012
* 2013/0315,635 DEVELOPING DEVICE AND IMAGE FORMING APPARATUS 2 2012
 
MICRODOSE THERAPEUTX, INC. (15)
* 5699649 Metering and packaging device for dry powders 37 1996
* 5960609 Metering and packaging method and device for pharmaceuticals and drugs 30 1998
6923979 Method for depositing particles onto a substrate using an alternating electric field 27 1999
6428809 Metering and packaging of controlled release medication 16 1999
6702683 Metering and packaging of controlled release medication 9 2002
7404968 Metering and packaging of controlled release medication 75 2004
* 2007/0087,048 Oral dosage combination pharmaceutical packaging 24 2006
7632533 Method and apparatus for producing uniform small portions of fine powders and articles thereof 6 2007
* 2009/0087,483 ORAL DOSAGE COMBINATION PHARMACEUTICAL PACKAGING 59 2007
8439033 Inhalation device 3 2008
* 2009/0090,361 INHALATION DEVICE 1 2008
8991390 Inhalation device and method 0 2011
* 2011/0162,642 INHALATION DEVICE AND METHOD 2 2011
9132246 Inhalation device 0 2013
9539400 Inhalation device 0 2015
 
RICOH COMPANY, LTD. (2)
* 5202732 Developing device for image forming equipment 23 1992
* 5784669 Toner replenishing device for an image forming apparatus 32 1996
* Cited By Examiner