Developing unit and image forming apparatus using the same
AssigneeSamsung Electronics Co., Ltd.
InventorsCheol-young Han, Hak-kyum Kim, Hae-seog Jo
Life of this patent
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Abstract
A developing unit to supply toner to a photosensitive medium of an image forming apparatus to form an image thereon, including a housing to hold a toner of a predetermined color, a developing roller which is coupled to the housing to be rotatable in a direction opposite to a moving direction of the photosensitive medium, to supply the photosensitive medium with the toner, and to form the image by potential difference, and a regulating blade including a coupling end part coupled to the housing and a free end part double bent with regard to the coupling end part to contact the developing roller at a tip part thereof.
Claims22
A developing unit usable in an image forming apparatus, the developing unit comprising:
- a housing to hold a toner;
- a developing roller disposed in the housing to supply the toner to a photosensitive body of the image forming apparatus;
- a supplying roller disposed in the housing to supply toner to the developing roller;
- and
- a double-bent regulating blade connected to the housing to regulate a toner layer formed on the developing roller, wherein the double-bent regulating blade includes a coupling part to couple with the housing, and a free end part to contact the developing roller, the free end part having a first bending part and a second bending part, the first part which is bending arcuately between the housing and the second bending part, and the second bending part which is bending arcuately between the first bending part and the developing roller.
An image forming apparatus, comprising:
- a photosensitive medium to form an electrostatic latent image by being charged and exposed to a light;
- at least one developing unit to supply a toner to the photosensitive medium;
- a transfer unit to transfer the image formed on the photosensitive unit onto a printing medium;
- and
- a fixing unit to fix the image transferred onto the printing medium,
- wherein the at least one developing unit comprises:
- a housing to hold a toner,
- a developing roller disposed in the housing to supply the toner to a photosensitive body of the image forming apparatus,
- a supplying roller disposed in the housing to supply toner to the developing roller, and
- a double-bent regulating blade connected to the housing to regulate a toner layer formed on the developing roller,
- wherein the double-bent regulating blade includes a coupling part to couple with the housing, and a free end part to contact the developing roller, the free end part having a first bending part and a second bending part, the first bending part which is bending arcuately between the housing and the second bending part, and the second bending part which is bending arcuately between the first bending part and the developing roller.
Dependencies are inferred from the claim text.