Toner housing container and image forming apparatus

Patent metadata

Field	Value
Publication number	US-9348259-B2
Application number	US-201414278119-A
Country	US
Kind code	B2
Filing date	May 15, 2014
Priority date	May 21, 2013
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A toner housing container includes a container body housing a toner; a conveying portion conveying the toner from one end of the container body, in a longer direction of the container body, to its other end at which a container opening portion is provided; a pipe receiving port receiving a conveying pipe fixed to a toner conveying device; and an uplifting portion moving the toner toward a toner receiving port of conveying pipe. Such toner has a molecular weight distribution having a peak in a range of 10 3 to 10 4 , and has C/R of from 0.03 to 0.55 between peak height C attributed to crystalline polyester resin and R attributed to non-crystalline resin when measured by FT-IR after stored at 45° C. for 12 hours.

First claim

What is claimed is:

1. A toner housing container, comprising:
a container body mountable on a toner conveying device and housing a toner to be supplied into the toner conveying device;
a conveying portion provided in the container body and configured to convey the toner from one end of the container body in a longer direction thereof to an other end thereof at which a container opening portion is provided;
a pipe receiving port provided at the container opening portion and capable of receiving a conveying pipe fixed to the toner conveying device; and
an uplifting portion configured to uplift the toner conveyed by the conveying portion from a lower side of the container body to an upper side thereof and move the toner toward a toner receiving port of the conveying pipe,
wherein the toner comprises a crystalline polyester resin (A) and a non-crystalline resin (B),
wherein the toner has a molecular weight distribution having a main peak in a range of from 1,000 to 10,000 when measured by gel permeation chromatography (GPC) of a THF soluble content thereof,
wherein the toner has a peak height ratio (C/R) of from 0.03 to 0.55 between a peak height C of a characteristic spectrum attributed to the crystalline polyester resin (A) and a peak height R of a characteristic spectrum attributed to the non-crystalline resin (B), when the toner is measured with a Fourier transform infrared spectroscopic analyzer according to total reflection method after stored in a thermostatic bath of 45° C. for 12 hours,
wherein the container body comprises a protruding portion protruding into a container body interior side of the container opening portion toward the one end,
wherein the uplifting portion comprises an uplifting wall surface extending from an internal wall surface of the container body toward the protruding portion, the uplifting wall surface inclining towards the container opening portion, and a curving portion that is a denting portion denting from an internal portion of the container body towards an external portion of the container body in a radial direction of the container so as to conform to the protruding portion, and
wherein the protruding portion is provided such that when the toner housing container is mounted on the toner conveying device, the protruding portion is present between the curving portion and the toner receiving port of the conveying pipe being inserted.

2. The toner housing container according to claim 1 ,
wherein the protruding portion has a plate-shaped member having a flat side surface, and
wherein the flat side surface of the plate-shaped member is provided so as to be present between the curving portion and the toner receiving port of the conveying pipe being inserted.

3. The toner housing container according to claim 1 ,
wherein the toner housing container comprises two uplifting portions, and
wherein when the toner housing container is mounted on the toner conveying device, the protruding portion is present between the curving portions of respective ones of the two uplifting portions and the toner receiving port of the conveying pipe being inserted.

4. The toner housing container according to claim 1 ,
wherein the uplifting portion and the protruding portion are fixed to the container body or formed integrally with the container body, and
wherein the uplifting portion uplifts the toner from the lower side to the upper side by rotation of the container body.

5. The toner housing container according to claim 1 ,
wherein the toner housing container comprises a shutter member capable of moving between a closing position to close the container opening portion and an opening position to open the container opening portion,
wherein the shutter member moves from the closing position to the opening position by being pushed by the conveying pipe fixed to the toner conveying device, and
wherein the protruding portion is provided so as to extend along a region in which the shutter member moves.

6. An image forming apparatus, comprising:
an image forming apparatus body in which the toner housing container according to claim 1 is set demountably.

7. A toner housing container, comprising:
a container body mountable on a toner conveying device and housing a toner to be supplied into the toner conveying device;
a conveying portion provided in the container body and configured to convey the toner from one end of the container body in a longer direction thereof to an other end thereof at which a container opening portion is provided;
a pipe receiving port provided at the container opening portion and capable of receiving a conveying pipe fixed to the toner conveying device; and
an uplifting portion configured to uplift the toner conveyed by the conveying portion from a lower side of the container body to an upper side thereof and move the toner toward a toner receiving port of the conveying pipe,
wherein the toner comprises a crystalline polyester resin (A) and a non-crystalline resin (B),
wherein the toner has a molecular weight distribution having a main peak in a range of from 1,000 to 10,000 when measured by gel permeation chromatography (GPC) of a THF soluble content thereof,
wherein the toner has a peak height ratio (C/R) of from 0.03 to 0.55 between a peak height C of a characteristic spectrum attributed to the crystalline polyester resin (A) and a peak height R of a characteristic spectrum attributed to the non-crystalline resin (B), when the toner is measured with a Fourier-transform infrared spectroscopic analyzer according to total reflection method after stored in a thermostatic bath of 45° C. for 12 hours,
wherein the container body comprises a protruding portion protruding into a container body interior side of the container opening portion toward the one end,
wherein the uplifting portion comprises a rising portion rising from an internal wall surface of the container body toward the protruding portion, the rising portion inclining towards the container opening portion,
wherein the rising portion comprises a curving portion that is a denting portion denting from an internal portion of the container body towards an external portion of the container body in a radial-direction of the container so as to conform to the protruding portion, and
wherein the protruding portion is provided such that when the toner housing container is mounted on the toner conveying device, the protruding portion is present between the curving portion and the toner receiving port of the conveying pipe being inserted.

8. The toner housing container according to claim 7 ,
wherein the protruding portion has a plate-shaped member having a flat side surface, and
wherein the flat side surface of the plate-shaped member is provided so as to be present between the curving portion and the toner receiving port of the conveying pipe being inserted.

9. The toner housing container according to claim 7 ,
wherein the toner housing container comprises two uplifting portions, and
wherein when the toner housing container is mounted on the toner conveying device, the protruding portion is present between the curving portions of respective ones of the two uplifting portions and the toner receiving port of the conveying pipe being inserted.

10. The toner housing container according to claim 7 ,
wherein the uplifting portion and the protruding portion are fixed to the container body or formed integrally with the container body, and
wherein the uplifting portion uplifts the toner from the lower side to the upper side by rotation of the container body.

11. The toner housing container according to claim 7 ,
wherein the toner housing container comprises a shutter member capable of movi

Assignees

• Ricoh Co Ltd

Inventors

• Nagayama Masashi
• Nakajima Hisashi
• Sekiguchi Yoshitaka
• Yamada Saori
• Hanatani Shinya
• Takii Mariko
• Hosokawa Hiroshi
• Katoh Shunji
• Tamaki Shinji
• Ikeguchi Hiroshi
• Kikuchi Kenji
• Suzuki Michiharu

Classifications

• G03G15/0839 Primary

  Physics · mapped topic

• G03G9/08795

  characterised by their chemical properties, e.g. acidity, molecular weight, sensitivity to reactants · CPC title

• G03G9/08755

  Polyesters · CPC title

• G03G9/08797

  characterised by their physical properties, e.g. viscosity, solubility, melting temperature, softening temperature, glass transition temperature · CPC title

• G03G15/0877 Primary

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