Toner container and image forming apparatus with a mechanism to secure the toner container

• US 8,792,809 B2
• Filed: 03/02/2012
• Issued: 07/29/2014
• Est. Priority Date: 09/04/2009
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Hori, Eisuke, Suzuki, Yuji, Kimura, Hideki, Takami, Nobuo, Kimura, Noriyuki, Kenji, Kikuchi
• Primary Examiner(s): BRASE, SANDRA L
• Application Number:
  US13/411,134
• Publication Number:
  US 20120219330A1
• Time in Patent Office: 879 Days
• Field of Search: 399/258, 399/262
• US Class Current: 399/262
• CPC Class Codes: G03G 15/0868 Toner cartridges fulfilling a continuous function within the electrographic apparatus during the use of the supplied developer material, e.g. toner discharge on demand, storing residual toner, acting as an active closure for the developer replenishing opening
• CPC Class Codes: G03G 15/0872 the developer cartridges being generally horizontally mounted parallel to its longitudinal rotational axis
• CPC Class Codes: G03G 15/0886 by mechanical means, e.g. shutter, plug
• CPC Class Codes: G03G 15/0889 for agitation or stirring
• CPC Class Codes: G03G 2215/0692 using a slidable sealing member, e.g. shutter

Abstract

A toner container and system for mounting and/or securing the toner container includes a toner container having a toner dispensing hole, a shutter, and a protrusion. The shutter is movable relative to the toner dispensing hole, and is to selectively close the toner dispensing hole. The protrusion is connected to the shutter and movement of the protrusion causes the shutter to move relative to the toner dispensing hole to cover the toner dispensing hole. There is a receiver including a movable catch, the movable catch being in a first position when the toner container is initially inserted into the receiver, and the movable catch moving to a second position upon insertion of the toner container into the receiver. The movable catch interacts with the protrusion of the toner container when the toner container is being removed from the receiver.

Claims

1. A toner container for attachment to a body of an image forming apparatus that includes a first holding member, a second holding member, and a shutter closing mechanism such that a longitudinal direction of the toner container is kept horizontal, the toner container comprising:

a toner outlet for discharging toner;

a shutter unit that moves along an outer periphery of the toner container to open and close the toner outlet;

a shutter rail for guiding the shutter unit to move in the longitudinal direction for opening and closing the toner outlet; and

a projection that protrudes from the toner container in the longitudinal direction so as to protrude from an end portion of the shutter unit in a closing direction with the end portion located at a position where the toner outlet is closed, wherein

the shutter rail includes two surface members that are disposed, respectively, on one side and another side of the toner container, and extend in the longitudinal direction,

the projection includes surfaces that are respectively in the same planes as planes of the surface members of the shutter rail,

the toner outlet is opened and closed by moving the shutter unit on the shutter rail,

the surface members are to be sandwiched by the first holding member,

the shutter unit is switched between a held state in which the shutter unit is held by the second holding member and a released state in which holding of the shutter unit by the second holding member is released in accordance with rotation of the second holding member, and

the shutter unit is prevented by the shutter closing mechanism, which makes the second holding member incapable of rotating, from being open while the surface members are sandwiched by the first holding member.

2. The toner container according to claim 1, further comprising:

a first hole that is formed at an upper portion of the toner container when the toner container is attached to the body of the image forming apparatus and serves as a main reference for positioning the toner container in the body of the image forming apparatus by extending in the longitudinal direction from an end face, which is perpendicular to the longitudinal direction, of the toner container; and

a second hole that is formed at a lower portion of the toner container when the toner container is attached to the image forming apparatus and serves as a sub-reference for positioning the toner container in the body of the image forming apparatus by extending in the longitudinal direction from the end face, which is perpendicular to the longitudinal direction, of the toner container so as not to reach a position of the toner outlet, wherein

the surfaces on the same planes as the planes of the surface members of the shutter rail are disposed so as to sandwich the second hole near a lower end of the second hole.

3. The toner container according to claim 2, wherein

said projection comprises two projections disposed so as to protrude from both end portions of the bottom portion and sandwich the second hole near the lower end of the second hole.

4. The toner container according to claim 2, wherein

a tip of the projection in the longitudinal direction is located to protrude relative to the end face of the first hole in the longitudinal direction.

5. The toner container according to claim 1, further comprising:

a cylindrical container body that has an opening on one end thereof in the longitudinal direction and is configured such that toner contained therein is conveyed toward the opening; and

a cap unit into which the opening of the container body is inserted and that includes the toner outlet at a bottom portion thereof for discharging toner, which has been discharged from the opening of the container body, to an outside of the toner container in a vertically downward direction.

6. The toner container according to claim 5, wherein the cap unit further includes

a cylindrical cavity that is formed inside the cap unit so as to extend in the longitudinal direction;

and

a toner fall path that has a columnar shape with a constant flow passage area from a lower circumferential surface of the cavity to the toner outlet.

7. The toner container according to claim 5, wherein

the container body has a spiral-shaped projection on an inner circumferential surface thereof and is held so as to be rotatable relative to the cap unit.

8. An image forming apparatus comprising the toner container according to claim 1, wherein the toner container is installed in the body of the image forming apparatus.

9. A toner container for use with an image forming apparatus, the toner container comprising:

a bottom plane including a toner outlet for discharging toner;

a shutter to open and close the toner outlet;

a shutter rail to guide the shutter when the shutter moves when opening or closing the toner outlet;

at least one projection portion which protrudes outwardly from an end portion of the toner container in a longitudinal direction of the toner container; and

an opening having an axial direction parallel to the longitudinal direction, the opening for mating with a protrusion within the image forming apparatus, wherein

the shutter rail has a first plane that is parallel to the longitudinal direction,

the at least one projection portion includes planes, each of which is common to the first plane,

the opening is disposed between the planes of the at least one projection portion.

10. The toner container of claim 9, wherein:

the at least one projection portion includes exactly two projection portions, and the two projection portions each include the first plane.

11. The toner container set forth in claim 10, wherein:

receiving members are disposed in a substantially symmetric manner relative to an axis of the toner container.

12. The toner container of claim 9, further comprising:

another opening whose axial direction is parallel to the longitudinal direction, said another to mate with another protrusion within the image forming apparatus.

13. The toner container of claim 12, wherein:

the opening has a substantially ellipsoidal shape, and

said another opening has a substantially circular shape.

14. The toner container of claim 9, wherein:

the projection portion includes two projections at the bottom plane, and

the opening is disposed between the two projections.

15. A toner container for use with an image forming apparatus, the toner container comprising:

a bottom plane including a toner outlet for discharging toner;

a shutter to open and close the toner outlet;

a shutter rail to guide the shutter when the shutter moves when opening or closing the toner outlet;

at least one projection portion which protrudes outwardly from an end portion of the toner container in a longitudinal direction of the toner container; and

an opening having an axial direction parallel to the longitudinal direction, the opening for mating with a protrusion within the image forming apparatus, wherein

the shutter rail has a first plane that is parallel to the longitudinal direction,

the at least one projection portion includes a plane,

the shutter includes a contact portion for contacting with a holder of the image forming apparatus, the contact portion disposed at the side of the shutter, the contact portion including a raised wall near a tip of the toner container in an inserting direction,

the plane extends such that the plane exists beyond the raised wall in the inserting direction when the shutter closes the toner outlet.

16. The toner container according to claim 15, further comprising:

a first hole that is formed at an upper portion of the toner container when the toner container is attached to the body of the image forming apparatus and serves as a main reference for positioning the toner container in the body of the image forming apparatus by extending in the longitudinal direction from an end face, which is perpendicular to the longitudinal direction, of the toner container; and

a second hole that is formed at a lower portion of the toner container when the toner container is attached to the image forming apparatus and serves as a sub-reference for positioning the toner container in the body of the image forming apparatus by extending in the longitudinal direction from the end face, which is perpendicular to the longitudinal direction, of the toner container so as not to reach a position of the toner outlet.

17. The toner container according to claim 16, wherein

said projection portion comprises two projections disposed so as to protrude from both end portions of the bottom portion and sandwich the second hole near a lower end of the second hole.

18. The toner container according to claim 16, wherein

a tip of the projection portion in the longitudinal direction is located to protrude relative to the end face of the opening in the longitudinal direction.

19. The toner container according to claim 15, further comprising:

a cylindrical container body that has an opening on one end thereof in the longitudinal direction and is configured such that toner contained therein is conveyed toward the opening; and

a cap unit into which the opening of the container body is inserted and that includes the toner outlet at a bottom portion thereof for discharging toner, which has been discharged from the opening of the container body, to an outside of the toner container in a vertically downward direction.

20. The toner container according to claim 19, wherein the cap unit further includes

a cylindrical cavity that is formed inside the cap unit so as to extend in the longitudinal direction;

and

a toner fall path that has a columnar shape with a constant flow passage area from a lower circumferential surface of the cavity to the toner outlet.

21. The toner container according to claim 19, wherein

the container body has a spiral-shaped projection on an inner circumferential surface thereof and is held so as to be rotatable relative to the cap unit.

22. An image forming apparatus comprising the toner container according to claim 15, wherein the toner container is installed in the body of the image forming apparatus.

23. The toner container according to claim 15, wherein the toner container contains toner.