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US 2026/0288036 A1Published application
Image forming apparatus
AssigneeKYOCERA Document Solutions Inc.
InventorsMinoru WADA, Kohei TERASAKI, Norio KUBO
Life of this patent
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Abstract
When a surface potential of an opposing member is Vop (V), a DC voltage is Vdv (V), a particle size of carrier is Dc (m), a thickness of a coat layer is Tc (m), a space between a first surface and a second surface is Dg (m), and a maximum electric field applied to the coat layer is Emax (V/m), which is expressed by the following equation (1), then the following inequality (2) is satisfied. Emax = ❘ "\[LeftBracketingBar]" Vop - Vdv ❘ "\[RightBracketingBar]" × Dc / ( Tc × 2 × Dg ) ( 1 ) Emax ≤ 4. × 1 0 7 ( 2 )
Claims5
An image forming apparatus comprising:
- a developer carrying member having a first surface, so as to carry a magnetic brush on the first surface, the magnetic brush containing toner and carrier in which carrier cores are coated with coat layers;
- and
- an opposing member having a second surface located to face the first surface, the opposing member being applied with a development voltage including a DC voltage, so as to carry the toner moved from the magnetic brush, on the second surface, wherein
- when a surface potential of the opposing member is Vop (V), the DC voltage is Vdv (V), a particle size of the carrier is Dc (m), a thickness of the coat layer is Tc (m), a space between the first surface and the second surface is Dg (m), and a maximum electric field applied to the coat layer is Emax (V/m), which is expressed by the following equation (1), then the following inequality (2) is satisfied.
- Emax
- =
- ❘
- "\[LeftBracketingBar]"
- Vop
- -
- Vdv
- ❘
- "\[RightBracketingBar]"
- ×
- Dc
- /
- (
- Tc
- ×
- 2
- ×
- Dg
- )
- (
- 1
- )
- Emax
- ≤
- 4.
- ×
- 1
-
- 0
- 7
- (
- 2
- )
34 more elements
Dependencies are inferred from the claim text.