Toner accommodating container

Patent metadata

Field	Value
Publication number	US-12510844-B2
Application number	US-202418812648-A
Country	US
Kind code	B2
Filing date	Aug 22, 2024
Priority date	Mar 2, 2022
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

There is used a toner accommodating container including: a bag-shaped accommodating portion having flexibility; and a toner accommodated in the accommodating portion, and including a silica particle. The toner has a value of Total Energy of 300 mJ or less in measurement of the Total Energy when a propeller type blade is caused to penetrate a surface of a powder layer of the toner manufacturing by applying a vertical load of 88 kPa in a measurement container in a powder flowability measurement device while the propeller type blade is being rotated at a peripheral speed of 100 mm/see of an outermost edge portion thereof.

First claim

What is claimed is:

1 . A toner accommodating container comprising:
a bag-shaped accommodating portion having flexibility; and a toner accommodated in the accommodating portion and including a silica particle, wherein the toner has a value of Total Energy of 300 mJ or less in measurement of the Total Energy when a propeller type blade is caused to penetrate a surface of a powder layer of the toner manufactured by applying a vertical load of 88 kPa in a measurement container in a powder flowability measurement device while the propeller type blade is being rotated at a peripheral speed of 100 mm/see of an outermost edge portion thereof.

2 . The toner accommodating container according to claim 1 , wherein
a content of the silica particle in the toner is at least 1.4 mass %.

3 . The toner accommodating container according to claim 2 , wherein
the content of the silica particle in the toner is at least 2.0 mass %.

4 . The toner accommodating container according to claim 2 , wherein
a coverage of a particle surface of the toner by the silica particle is at least 34% and not more than 80%.

5 . The toner accommodating container according to claim 4 , wherein
the coverage of the particle surface of the toner by the silica particle is at least 39% and not more than 75%.

6 . The toner accommodating container according to claim 1 , wherein
after the toner is shaken in the toner accommodating container at an amplitude of 80 mm and at 150 times/min for 5 minutes, a degree of agglomeration of the toner discharged is 40% or less.

7 . The toner accommodating container according to claim 1 , wherein
the toner includes hydrotalcite particles including fluorine.

8 . The toner accommodating container according to claim 7 , wherein
with line analysis in STEM-EDS mapping analysis, fluorine is present in an inside of the hydrotalcite particle included in the toner.

9 . The toner accommodating container according to claim 7 , wherein
the bag-shaped accommodating portion is formed of a resin sheet.

10 . The toner accommodating container according to claim 9 , wherein
the resin sheet is at least any of a polypropylene sheet, a polyethylene sheet, and a PET sheet.

11 . The toner accommodating container according to claim 9 , wherein
a thickness of the resin sheet is at least 25 μm and not more than 300 μm.

12 . The toner accommodating container according to claim 1 ,
wherein the toner includes a surfactant, and a P/N ratio that is a ratio of a positive component of the surfactant and a negative component of the surfactant is at least 0.1 and not more than 0.8.

13 . The toner accommodating container according to claim 12 , wherein
the P/N ratio of the toner is at least 0.2 and not more than 0.6.

Assignees

• Canon Kk

Inventors

• Tanaka Masatake
• Baba Daisuke

Classifications

• G03G2215/0682

  Bag-type non-rigid container · CPC title

• G03G21/1676

  for the developer unit · CPC title

• G03G9/09725

  Silicon-oxides; Silicates · CPC title

• G03G9/0821 Primary

  characterised by physical parameters (magnetic parameters G03G9/083) · CPC title

• G03G9/0802

  Preparation methods · CPC title