Electrophotography – Image formation – Development
Reexamination Certificate
2007-07-19
2010-06-08
Gray, David M (Department: 2852)
Electrophotography
Image formation
Development
C399S030000, C399S059000, C399S062000
Reexamination Certificate
active
07734229
ABSTRACT:
A pixel count section calculates a coverage rate corresponding to toner consumption. A control coefficient value setting section determines, based on the coverage rate, a stop threshold value representing reference concentration for toner replenishment and replenishment extension time. A magnetic permeability sensor measures permeability representing toner concentration in a housing portion. A toner concentration control section starts toner replenishment when an output value from the magnetic permeability sensor varies from a value less than a start threshold value to the start threshold value or above, and stops toner replenishment after lapse of replenishment extension time from the time at which an output value varied from a value greater than the stop threshold value to the stop threshold value.
REFERENCES:
patent: 5122834 (1992-06-01), Okamoto et al.
patent: 5581326 (1996-12-01), Ogata et al.
patent: 6404997 (2002-06-01), Grace
patent: 2006/0127108 (2006-06-01), Okuyama et al.
patent: 2006/0127109 (2006-06-01), Itoyama
patent: 1786844 (2006-06-01), None
patent: 1790182 (2006-06-01), None
patent: 04-304486 (1992-10-01), None
patent: 05-088554 (1993-04-01), None
patent: 08-110699 (1996-04-01), None
patent: 08202137 (1996-08-01), None
patent: 2002-333774 (2002-11-01), None
patent: 2005-092151 (2005-04-01), None
patent: 2005-099142 (2005-04-01), None
patent: 2006-308941 (2005-04-01), None
patent: 2005-292237 (2005-10-01), None
patent: 2006-091211 (2006-04-01), None
Machine Translation of JP 2006-308941 A, Apr. 2005, Japan.
Kitagawa Takashi
Taka Kyosuke
Tanaka Tatsuya
Conlin David G.
Edwards Angell Palmer & & Dodge LLP
Fekete Barnabas T
Gray David M
Sharp Kabushiki Kaisha
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