# US 9,753,409 B2 · Toner case and image forming apparatus

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- Number: US 9,753,409 B2
- Document ID: US9753409B2
- Status: Granted
- Kind: B2
- Application number: 15/173,166
- Filed: 2016-06-03
- Published: 2016-12-15
- Granted: 2017-09-05
- Earliest claimed: 2015-06-11
- Assignees: KYOCERA Document Solutions Inc.
- Applicants: KYOCERA Document Solutions Inc.
- Inventors: Takeshi Iketani
- Web page: https://patentgrep.com/patent/US9753409B2

## CPC

- G03G 15/0896: {Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894}
- G03G 15/0865: {Arrangements for supplying new developer}
- G03G 15/0875: {cartridges having a box like shape}
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

A toner case includes a case main body, an attachment member, and a sealing member. The case main body is configured to contain a toner. The attachment member is configured to partition an inside space of the case main body so as to adjust toner capacity. The sealing member is arranged between the case main body and the attachment member. The case main body includes a first engagement part. The attachment member includes a second engagement part configured to engage with the first engagement part via the sealing member.

## Claims

### Claim 1

A toner case comprising:
a case main body configured to contain a toner;
an attachment member configured to partition an inside space of the case main body so as to adjust toner capacity; and
a sealing member arranged between the case main body and the attachment member,
wherein the case main body includes a first engagement part, and
the attachment member includes a second engagement part configured to engage with the first engagement part via the sealing member,
wherein the first engagement part is a protruded part protruded from an inner circumferential face of the case main body, and
the second engagement part is a recess part arranged on an outer circumferential face of the attachment member, and
the sealing member is configured to cover the recess part along the outer circumferential face of the attachment member and is deformed into a shape along a gap between the protruded part and the recess part.

### Claim 2 (depends on 1)

The toner case according to claim 1, wherein the first engagement part and the second engagement part extend along a direction crossing to a longitudinal direction of the case main body.

### Claim 3 (depends on 1)

An image forming apparatus comprising the toner case according to claim 1.

### Claim 4

A toner case comprising:
a case main body configured to contain a toner;
an attachment member configured to partition an inside space of the case main body so as to adjust toner capacity; and
a sealing member arranged between the case main body and the attachment member,
wherein the case main body includes a first engagement part, and
the attachment member includes a second engagement part configured to engage with the first engagement part via the sealing member,
wherein the case main body has an opening at its upper face, and
the first engagement part is formed at a lower part of an inner circumferential face of the case main body, and the second engagement part is formed at a lower part of an outer circumferential face of the attachment member.

### Claim 5 (depends on 4)

The toner case according to claim 4, further comprising a lid member configured to close the opening of the case main body,
wherein the sealing member is arranged between inner circumferential faces of the case main body and the lid member and the outer circumferential face of the attachment member so that the sealing member is compressed.

### Claim 6 (depends on 4)

An image forming apparatus comprising the toner case according to claim 4.

### Claim 7

A toner case comprising:
a case main body configured to contain a toner;
an attachment member configured to partition an inside space of the case main body so as to adjust toner capacity; and
a sealing member arranged between the case main body and the attachment member,
wherein the case main body includes a first engagement part, and
the attachment member includes a second engagement part configured to engage with the first engagement part via the sealing member,
wherein the case main body includes an outer plate having a toner filling port, and
the attachment member includes:
a partition plate configured to partition the inside space of the case main body into a filled space filled with the toner and a restrained space restrained from a filling of the toner; and
a duct arranged between the outer plate and the partition plate, housed in the restrained space, and configured to communicate the toner filling port and the filled space while the toner is filled into the filled space, and
the sealing member is arranged along an outer circumferential face of the partition plate.

### Claim 8 (depends on 7)

The toner case according to claim 7, further comprising a rotating member housed in the filled space,
wherein the partition plate includes a bearing part configured to rotatably support one end part of the rotating member.

### Claim 9 (depends on 7)

The toner case according to claim 7,
wherein the sealing member is wound around the outer circumferential face of the partition plate, and
both end parts of the sealing member in a longitudinal direction are overlapped with each other in a longitudinal direction of the case main body.

### Claim 10 (depends on 7)

An image forming apparatus comprising the toner case according to claim 7.