Electrophotography – Diagnostics – Consumable
Reexamination Certificate
2007-09-13
2009-02-10
Tran, Hoan H (Department: 2852)
Electrophotography
Diagnostics
Consumable
C399S049000
Reexamination Certificate
active
07489882
ABSTRACT:
Based on a video signal, a toner dot counter and an off dot counter detect a size of a toner dot portion to carry an adherent toner thereto and a size of an off dot portion not to carry an adherent toner, respectively. Reference is made to a look-up table based on the detection results, so as to retrieve a coefficient Kv corresponding to a combination of the sizes of the toner dot portion and the off dot portion. A count value Cdot given by the toner dot counter is multiplied by the coefficient Kv, while the resultant product is integrated by an accumulator. An integration value for an image of one page is multiplied by a coefficient K0equivalent to a toner adhesion percentage of solid image. Thus is determined a toner consumption TC on the page image.
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Inaba Isao
Kin Hidenori
Okamura Takehiko
Shimura Hidetsugu
Yokote Shinsuke
Hogan & Hartson LLP
Seiko Epson Corporation
Tran Hoan H
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