Patent ID: 9348259
Filing Date: 2016-05-24
CPC Classification: G03G

Claim Text:
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.