Toner pack

Patent metadata

Field	Value
Publication number	US-12411428-B2
Application number	US-202318390087-A
Country	US
Kind code	B2
Filing date	Dec 20, 2023
Priority date	Dec 28, 2022
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A toner pack stores a toner that has first and second toner particles. The surface of the second toner particle has a portion formed by connecting a plurality of silicon-containing protrusions on its surface, with the content of the second toner particle within a specific range relative to the content of the first toner particle. The toner pack has a storage portion and a discharge member, where the discharge member has a receiving port, a discharge port, a fixing part to which the storage portion is fixed, and an inclined surface that causes the toner to move toward the discharge port. The inclined surface that is the closest to the storage portion is at an angle of 45 degrees or more and less than 90 degrees.

First claim

What is claimed is:

1. A toner pack storing a toner, comprising:
a bag-shaped storage portion that stores the toner and has an opening;
a discharge member that is aligned with the storage portion in a first direction and is configured to discharge the toner from the storage portion, the first direction being a direction in which the opening opens;
the discharge member having a receiving port configured to receive the toner stored in the storage portion through the opening, and a discharge port that opens in a direction intersecting the first direction and is configured to discharge the toner received from the receiving port to outside of the toner pack;
the toner pack has a shielding member that shields the discharge port;
the receiving port being provided on a further toward inner side than the opening in a second direction perpendicular to the first direction, and opening toward the first direction;
the discharge member having a fixing part to which the opening of the storage portion is fixed, a surface extending in a direction intersecting the first direction between an outer circumferential surface of the fixing part and the receiving port, and
at least one inclined surface configured to move the received toner toward the discharge port, where adjacent inclined surfaces have different inclination angles; and
the inclined surface that is closest to the storage portion in the first direction is at an angle of 45 degrees or more and less than 90 degrees with respect to the first direction, wherein
the toner comprises a first toner and a second toner,
the first toner comprises a first toner particle having silica fine particle externally added to a surface of the first toner particle,
the second toner comprises a second toner particle having a surface with a portion formed by connecting a plurality of protrusions comprising silicon,
a surface of the first toner particle having no portion formed by connecting a plurality of protrusions comprising silicon, and
a content of the second toner particle relative to the first toner particle in the toner pack being 0.10 to 20% by number.

2. The toner pack according to claim 1 , wherein the first toner comprises fluorine-comprising hydrotalcite particles externally added to the surface of the first toner particle.

3. The toner pack according to claim 2 , wherein a content of the fluorine-comprising hydrotalcite particles is 0.01 to 0.5 parts by mass based on 100 parts by mass of toner particles.

4. The toner pack according to claim 1 , wherein the first toner comprises needle-shaped titania particles externally added to the surface of the first toner particle.

5. The toner pack according to claim 4 , wherein a content of the needle-shaped titania particles is 0.01 to 0.5 parts by mass based on 100 parts by mass of toner particles.

6. The toner pack according to claim 1 , wherein the first toner has a shape factor SF-1 of 110 to 150.

7. The toner pack according to claim 1 , wherein the second toner has a shape factor SF-1 of 100 to 140.

8. The toner pack according to claim 1 , wherein the second toner particle comprises a styrene acrylic resin as a binder resin.

9. The toner pack according to claim 1 , wherein the discharge member has three inclined surfaces having different inclination angles.

Assignees

• Canon Kk

Inventors

• Tanaka Masatake
• Nozaki Dai
• Komuro Masaya

Classifications

• G03G2215/0682

  Bag-type non-rigid container · CPC title

• G03G15/0874 Primary

  non-rigid containers, e.g. foldable cartridges, bags · CPC title

• G03G9/09342

  Inorganic compounds · CPC title

• G03G9/08711

  with esters of acrylic or methacrylic acid · CPC title

• G03G9/0827

  characterised by their shape, e.g. degree of sphericity · CPC title