Image forming system having developer container, rotating member for rotating shutter, and restricting mechanism for rotating member

Patent metadata

Field	Value
Publication number	US-11526099-B2
Application number	US-202117558762-A
Country	US
Kind code	B2
Filing date	Dec 22, 2021
Priority date	Dec 28, 2020
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

An attached portion of an image forming apparatus includes a rotating member of which at least a part is exposed outside the image forming apparatus when the developer container is attached, and a rotation restricting mechanism that is movable between a restricting position to restrict rotation of the rotating member and an allowable position to allow rotation of the rotating member, and includes a restricting member that is at the restricting position when the developer container is not attached. The developer container is attached to the attached portion so that the discharging portion engaging portion and the shutter engaging portions are engaged with the frame engaged portions and the rotating member engaged portions respectively when the container shutter is in the close state, and the restricting member moves from the restricting position to the allowable position when the developer container is attached to the attached portion.

First claim

What is claimed is:

1. An image forming system comprising:
a developer container; and
an image forming apparatus including an attached portion to which the developer container is attached, wherein
the developer container further comprises:
a container portion that contains developer;
a discharging portion in which a container opening through which the developer contained in the container portion is discharged to an outside of the developer container is provided, and which includes a discharging portion engaging portion; and
a container shutter that is rotatable with respect to the discharging portion about a rotation axial line, between an open position in which the container shutter opens the container opening and a close position in which the container shutter closes the container opening, and that includes a shutter engaging portion;

the attached portion further comprises:
a frame in which a receiving port through which the frame receives the developer discharged from the container opening is provided, wherein the frame includes a frame engaged portion configured to engage with the discharging portion engaging portion so as to restrict a rotation of the discharging portion about the rotation axial line;
a rotating member which is rotatable about the rotation axial line with respect to the frame and of which at least a part is exposed outside the image forming apparatus in a case where the developer container is attached to the attached portion, wherein the rotating member is provided outside the container shutter in a radius direction of a virtual circle centering the rotation axial line when viewed in a direction of the rotation axial line in a case where the developer container is attached to the attached portion, and the rotating member includes a rotating member engaged portion that engages with the shutter engaging portion, and a restricted portion, and the rotating member is configured to rotate together with the container shutter by the rotating member engaged portion being engaged with the shutter engaging portion; and
a rotation restricting mechanism that includes a restricting member having a restricting portion and movable between a restricting position in which the restricting portion restricts a rotation of the rotating member by engaging with the restricted portion of the rotating member and an allowable position in which the restricting portion allows the rotating member to rotate, and a restricting member is in the restricting position in a case where the developer container is not attached to the attached portion; wherein

the developer container is attached to the attached portion in a state where the container shutter is at the close position so that the discharging portion engaging portion is engaged with the frame engaged portion and so that the shutter engaging portion is engaged with the rotating member engaged portion, wherein
the restricting member is configured to move from the restricting position to the allowable position by an attachment of the developer container to the attached portion.

2. The image forming system according to claim 1 , wherein
the container shutter includes a projecting portion that projects in a direction intersecting with the rotation axial line, from an outer surface extending in the direction of the rotation axial line, wherein
the rotation restricting mechanism further comprises:
a release member that includes a pressed portion, and a pressing portion to press the restricting member in a direction in which the restricting member moves from the restricting position to the allowable position; and
a biasing member that biases the restricting member in a direction in which the restricting member is moved from the allowable position to the restricting position, wherein

the release member is moved in the intersecting direction by the pressed portion being pressed by the projecting portion in a case where the developer container is attached to the attached portion, and moves the restricting member from the restricting position to the allowable position against the biasing force of the biasing member by pressing the restricting member via the pressing portion.

3. The image forming system according to claim 2 , wherein
the release member is provided in the rotating member, wherein
the restricting member is provided in the frame, wherein
in a case where the rotating member rotates together with the container shutter so that the container shutter is rotated from the close position to the open position, the restricting member and the release member are transitioned to a separated state in which the restricting member and the release member are separated from each other, wherein
the release member contacts with an outer surface of the rotating member in the separated state, so as to be maintained at the allowable position.

4. The image forming system according to claim 2 , wherein
the container shutter includes a recessed portion on an outer peripheral surface of the container shutter centering the rotation axial line, the recessed portion extending in the direction of the rotation axial line and is recessed inward from the outer peripheral surface in the radius direction of the virtual circle, wherein
the recessed portion includes a recessed portion bottom surface, and a first recessed portion side surface and a second recessed portion side surface, the first recessed portion side surface and the second recessed portion side surface being arranged across the recessed portion bottom surface in the circumferential direction of the outer peripheral surface, and connect the outer peripheral surface and the recessed portion bottom surface, wherein
the shutter engaging portion includes a first shutter engaging portion constituted of a part of the first recessed portion side surface, and a second shutter engaging portion constituted of a part of the second recessed portion side surface, wherein
the rotating member is provided with a hole having an inner peripheral surface centering the rotation axial line, and a protruded portion which extends from the inner peripheral surface toward the rotation axial line, wherein
the protruded portion includes a protruded portion front end surface, and a first protruded portion side surface and a second protruded portion side surface, the first protruded portion side surface and the second protruded portion are arranged across the protruded portion front end surface in the circumferential direction, wherein
the rotating member engaged portion includes a first rotating member engaged portion which is the first protruded portion side surface, and a second rotating member engaged portion which is the second protruded portion side surface, wherein
in a case where the developer container is attached to the attached portion, the first shutter engaging portion and the first rotating member engaged portion engage with each other in the circumferential direction, and the second shutter engaging portion and the second rotating member engaged portion engage with each other in the circumferential direction, wherein
the pressed portion of the restrict member is provided between the first rotating member engaged portion and the second rotating member engaged portion in the circumferential direction.

5. The image forming system according to claim 4 , wherein
the attached portion includes an apparatus shutter, the apparatus shutter is rotatable with respect to the frame about the rotation axial line, between the open position in which the apparatus shutter opens the receiving port and the close position in which the apparatus shutter closes the receiving port, and includes an open/close engaged portion, wherein
the container shutter includes an open/close engaging portion that engages with the open/close engaged portion so as to

Assignees

• Canon Kk

Inventors

• Nogami Kazuaki
• Kawanami Takeo
• Mitsumata Akinori
• Munetsugu Hiroyuki
• Ozaki Goshi

Classifications

• G03G2215/0673

  Generally vertically mounting of said toner cartridge parallel to its longitudinal rotational axis · CPC title

• G03G15/0894

  Reconditioning of the developer unit, i.e. reusing or recycling parts of the unit, e.g. resealing of the unit before refilling with toner · CPC title

• G03G21/1676

  for the developer unit · CPC title

• G03G15/0865

  Arrangements for supplying new developer · CPC title

• G03G2215/0692

  using a slidable sealing member, e.g. shutter · CPC title