Developing unit cleaning blade and image forming apparatus having the same
AssigneeSamsung Electronics Co., Ltd.
InventorYoung-chae Kim
Life of this patent
Estimating the term…
Abstract
A developing unit and an image forming apparatus are disclosed. The developing unit includes an image carrier on which an electrostatic latent image is formed, a developing member to supply a developer to the image carrier, and a first cleaning member having a first cleaning blade to remove a non-transferred developer on the image carrier. The first cleaning blade is configured to be reversible between a counter disposition, which is opposite to a rotation direction of the image carrier while the image carrier is in a printing operation, and a trailing disposition, which corresponds to the rotation direction.
Claims18
A developing unit, comprising:
- an image carrier on which an electrostatic latent image is formed;
- a developing member to supply a developer to the image carrier;
- a first cleaning blade to remove a non-transferred developer on the image carrier;
- and
- a second cleaning blade to remove the non-transferred developer on the image carrier,
- wherein the first cleaning blade is configured to be reversible between a counter disposition and a trailing disposition which are opposite to each other with respect to a reference surface of the image carrier,
- wherein the first cleaning blade is disposed in the trailing disposition during a printing operation, and the first cleaning blade is reversed from the trailing disposition to the counter disposition when the printing operation is finished, and
- wherein the second cleaning blade is disposed in the counter disposition.
A developing unit, comprising:
- an image carrier on which an electrostatic latent image is formed;
- a charging member to charge a surface of the image carrier with electricity;
- a developing member to supply a developer to the image carrier;
- a first cleaning blade to remove a non-transferred developer on the image carrier and a first bracket to support the first cleaning blade;
- a second cleaning blade to remove the non-transferred developer on the image carrier and a second bracket to support the second cleaning blade;
- and
- an electricity removing member to emit a light to the image carrier to remove ana potential on the surface of the image carrier,
- wherein the first bracket comprises a reflection material disposed at a side surface thereof to reflect at least a portion of the light emitted from the electricity removing member toward the surface of the image carrier,
- wherein the first cleaning blade is disposed in the trailing disposition during a printing operation, and the first cleaning blade is reversed from the trailing disposition to the counter disposition when the printing operation is finished, and
- wherein the second cleaning blade is disposed in the counter disposition.
An image forming apparatus having a developing unit, the developing unit comprising:
- an image carrier on which an electrostatic latent image is formed;
- a developing member to supply a developer to the image carrier;
- and
- a first cleaning blade to remove a non-transferred developer on the image carrier and a second cleaning member having a second cleaning blade to remove the non-transferred developer on the image carrier,
- wherein the first cleaning blade is configured to be reversible between a counter disposition, and a trailing disposition disposed opposite to the counter disposition with respect to a reference surface of the image carrier in a printing operation,
- wherein the first cleaning blade is disposed in the trailing disposition during a printing operation, and the first cleaning blade is reversed from the trailing disposition to the counter disposition when the printing operation is finished, and
- wherein the second cleaning blade is disposed in the counter disposition.
Dependencies are inferred from the claim text.