Developing device and image forming apparatus
AssigneeKonica Minolta, Inc.
InventorMei Suzuki
Life of this patent
Estimating the term…
Abstract
Disclosed is a developing device, which may include: a casing that stores developer containing toner; and a screw arranged inside the casing, wherein the screw includes: a rotary shaft; and a screw blade that is spirally arranged around the rotary shaft and conveys the toner from an upstream side to a downstream side by rotation of the rotary shaft, the screw blade includes a discontinuous region, a paddle extending in a radial direction of the rotary shaft is provided along an axial direction of the rotary shaft on a surface of the rotary shaft located in the discontinuous region, and a recess and a protrusion are provided at an edge side in a radial direction of the paddle.
Claims14
A developing device, comprising:
- a casing that stores developer containing toner;
- a toner density detection sensor;
- and
- a screw arranged inside the casing, wherein the screw includes:
- a rotary shaft;
- and
- a screw blade that is spirally arranged around the rotary shaft and conveys the toner from an upstream side to a downstream side by rotation of the rotary shaft,
- wherein the screw blade includes a discontinuous region,
- wherein a paddle extending in a radial direction of the rotary shaft is provided along an axial direction of the rotary shaft on a surface of the rotary shaft located in the discontinuous region,
- wherein an amount of space extending in the axial direction between the paddle and the screw blade is based on a location of the toner density detection sensor in the axial direction, and
- wherein a recess and a protrusion are provided at an edge side in a radial direction of the paddle.
Dependencies are inferred from the claim text.