Developing device and method for locating a toner restricting member at a developing device
AssigneeKabushiki Kaisha Toshiba
InventorsHiroshi Hashizume, Takashi Ishikawa
Life of this patent
Estimating the term…
Abstract
A developing device includes a movable toner carrier having a surface which receives a toner, and a toner restricting member arranged parallel to the toner carrier. The toner restricting member comprises a retaining rod made of a rigid material and an elastic contact unit provided on the outer periphery of the retaining rod, extending in an axial direction along the retaining rod and having at least one contact area set in contact with the surface of the toner carrier.
Claims25
A developing device for depositing a toner comprising:
- a casing;
- a toner carrier rotatably mounted within the casing and having a surface for receiving a tone;
- and
- a tone restricting member nonrotatably mounted within the casing parallel to and urged into contact with the toner carrier, the tone restricting member including a ridge retaining rod and an elastic contact unit secured to an outer surface of the retaining rod, the contact unit extending axially along the retaining rod and having a single contact area with a distal end extending from the retaining rod for contacting the surface of the toner carrier, the contact area extending from the retaining rod to a height smaller than a diameter of the retaining rod;
- whereby, upon rotation of the toner carrier, a thin layer of toner is deposited on the toner carrier after passing between the contact unit and the toner carrier.
A developing device for depositing a toner comprising:
- a casing;
- a toner carrier rotatably mounted in the casing and having a surface for receiving a toner;
- and
- a toner restricting member nonrotatably mounted in the casing in one of a plurality of predetermined positions, in each position the toner restricting member being parallel to and urged into contact with the toner carrier, the toner restricting member including a rigid retaining rod and an elastic contact unit secured to an outer surface of the retaining rod, the contact unit extending axially along the retaining rod and having a plurality of contact areas arranged circumferentially around the retaining rod and extending from the retaining rod for contacting the surface of the toner carrier, one corresponding contact area contacting the toner carrier when the toner restricting member is in a given predetermined position, each contact area extending from the retaining rod to a height smaller than a diameter of the retaining rod;
- whereby, upon rotation of the toner carrier, a thin layer of toner is deposited on the toner carrier after passing between the contact unit and the toner carrier.
A method for locating a toner restricting member on a developing device, comprising the steps of:
- preparing a toner restricting member including a rigid retaining rod and an elastic contact unit, the contact unit being secured to an outer surface of the retaining rod and having at least one contact area extending from the retaining rod to a height smaller than a diameter of the retaining rod;
- and
- setting the toner restricting member parallel with a toner carrier and setting the contact area in contact with the outer surface of the toner carrier.
A method for mounting a toner restricting member in a developing device, comprising the steps of:
- rotatably mounting a toner carrier within a casing of a developing device;
- nonrotatably mounting a toner restricting member within the casing in one of a plurality of predetermined positions, in each position the toner restricting member being parallel to and urged into contact with the toner carrier, the toner restricting member including a contact unit having a plurality of contact areas for contacting the toner carrier, one corresponding contact area contacting the toner carrier when the toner restricting member is in a given predetermined position.
Dependencies are inferred from the claim text.