Powder container and image forming apparatus

Patent metadata

Field	Value
Publication number	US-9482988-B2
Application number	US-201414286604-A
Country	US
Kind code	B2
Filing date	May 23, 2014
Priority date	Nov 25, 2011
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A powder conveying device includes: a conveying nozzle, provided with a powder receiving opening; an open/close member to open/close the powder receiving opening; a flange provided to the open/close member; a biasing member to bias the open/close member; and a container setting section to which a part of a powder container is to be fit. The powder container includes: a conveyor to convey the powder from a second end of the powder container to a first end; a container opening protruding from the first end; a nozzle receiving opening into which the conveying nozzle is to be inserted; and a butting portion provided in the container opening, to butt against the flange. When the powder container is attached to the powder conveying device, the container opening is fitted to the container setting section, and the flange and the biasing member are housed in an inner space of the container opening.

First claim

What is claimed is:

1. A powder container to be attached to a powder conveying device with a longitudinal direction of the powder container parallel to a horizontal direction, the powder conveying device including:
a nozzle, including a powder receiving opening to receive powder from the powder container, to convey the powder;
a cover to open and close the powder receiving opening;
a flange disposed around the nozzle; and
a biasing member to bias the cover to close the powder receiving opening,
the powder container comprising:
a conveyor, arranged inside the powder container, to convey the powder from a second end of the powder container to a first end along the longitudinal direction of the powder container;
a container opening protruding from the first end of the powder container; and
a nozzle receiving opening, at the container opening, into which the nozzle of the powder conveying device is to be inserted,

wherein:
an inner space of the container opening has a size to accommodate the flange, and
when the powder container is attached to the powder conveying device, the inner space of the container opening includes therein the flange.

2. The powder container according to claim 1 , wherein an outer surface of the container opening is a positioning section with respect to the powder conveying device.

3. The powder container according to claim 1 , further comprising:
a container body that is held by the powder conveying device so as to rotate relative to the nozzle about a longitudinal direction of the container body as a rotation axis when the powder is conveyed, wherein
a cylindrical outer surface of the container opening of the container body includes a rotary shaft section to be inserted in a rotary shaft receiving section of the powder conveying device.

4. The powder container according to claim 3 , wherein the cylindrical outer surface of the container opening of the container body is a positioning section with respect to the powder conveying device.

5. The powder container according to claim 3 , further comprising:
a nozzle receiver, arranged in the container opening, to guide the nozzle to the inside of the powder container by communicating with the nozzle receiving opening, wherein
the nozzle receiver includes a fixing portion, which has a screw on the outer circumference thereof, to attach the nozzle receiver to the container opening, wherein
a screwing direction of the screw is the same as a rotation direction of the container body in the powder conveying device.

6. The powder container according to claim 1 , further comprising:
a nozzle receiver, arranged in the container opening, to guide the nozzle to the inside of the powder container by communicating with the nozzle receiving opening, wherein
the nozzle receiver includes a fixing portion to attach the nozzle receiver to the container opening, and
an outer diameter of the fixing portion is greater than an inner diameter of the container opening,
a protrusion is provided on one of an outer surface of the fixing portion and an inner surface of the container opening while an engaged hole to be engaged with the protrusion is formed on the other one of the outer surface of the fixing portion and the inner surface of the container opening, and
the fixing portion is press fitted to the container opening at a position at which the protrusion and the engaged hole are engaged.

7. The powder container according to claim 3 , further comprising:
a nozzle receiver, arranged in the container opening, to guide the nozzle to the inside of the powder container by communicating with the nozzle receiving opening, wherein
the nozzle receiver includes a fixing portion to attach the nozzle receiver to the container opening,
an outer diameter of the fixing portion is smaller than an inner diameter of the container opening,
a protrusion is provided on one of an outer surface of the fixing portion and an inner surface of the container opening while an engaged hole to be engaged with the protrusion is formed on the other one of the outer surface of the fixing portion and the inner surface of the container opening,
a seal is disposed in a gap between the fixing portion and the container body, and
the nozzle receiver is fitted to the container opening so that the seal is sandwiched and compressed between the fixing portion and the container body at a position at which the protrusion and the engaged hole are engaged.

8. The powder container according to claim 3 , further comprising:
a nozzle receiver, arranged in the container opening, to guide the nozzle to the inside of the powder container by communicating with the nozzle receiving opening, wherein
the nozzle receiver includes a fixing portion to attach the nozzle receiver to the container opening,
the fixing portion includes a first portion and a second portion,
a first outer diameter of the first portion is smaller than an inner diameter of the container opening, corresponding to the rotary shaft section,
a second outer diameter of the second portion is greater than the inner diameter of the container opening, and
the fixing portion is press fitted to the container opening.

9. The powder container according to claim 8 , wherein
a press-fitted portion of the fixing portion is located so as to correspond to a position of a container gear transmitting a rotational force to the container body.

10. The powder container according to claim 8 , wherein
a press-fitted portion of the fixing portion is located so as to correspond to a position at which the container opening is thicker than the rotary shaft section.

11. The powder container according to claim 1 , wherein
the nozzle receiving opening is a through hole of an annular seal, and
an enclosed space is formed around the nozzle and between the annular seal and the nozzle receiver upon insertion of the nozzle.

12. The powder container according to claim 1 , wherein the powder container contains therein toner.

13. An image forming apparatus comprising:
an image forming unit that forms an image on an image carrier by using image-forming powder;
a powder conveyor that conveys the powder to the image forming unit; and
the powder container according to claim 1 , wherein
the powder container is configured to be detachably attached to the powder conveying device.

Assignees

• Hosokawa Hiroshi
• Kato Shunji
• Tamaki Shinji
• Ikeguchi Hiroshi
• Terazawa Seiji
• Yamabe Junji
• Mitsuishi Kaori
• Tomotaka Toshihide
• Watanabe Tsunehiro
• Kikuchi Kenji
• Ricoh Co Ltd

Inventors

• Hosokawa Hiroshi
• Kato Shunji
• Tamaki Shinji
• Ikeguchi Hiroshi
• Terazawa Seiji
• Yamabe Junji
• Mitsuishi Kaori
• Tomotaka Toshihide
• Watanabe Tsunehiro
• Kikuchi Kenji

Classifications

• G03G15/0877 Primary

  Arrangements for metering and dispensing developer from a developer cartridge into the development unit · CPC title

• G03G15/0886

  by mechanical means, e.g. shutter, plug · CPC title

• G03G15/0865 Primary

  Arrangements for supplying new developer · CPC title

• G03G15/0872 Primary

  the developer cartridges being generally horizontally mounted parallel to its longitudinal rotational axis · CPC title

• G03G2215/0697

  being an electronically readable memory · CPC title