JP2016011971A5

JP2016011971A5 -

Info

Publication number: JP2016011971A5
Application number: JP2014132076A
Authority: JP
Filing date: 2014-06-27
Publication date: 2017-08-10
Anticipated expiration: 2034-06-27

Claims

A toner having toner particles having a surface layer containing an organosilicon polymer and a charge control agent;
The organosilicon polymer has the following formula (T3R)

(R in the formula is a hydrocarbon group having 1 to 6 carbon atoms.)
Having a unit represented by
In measurement using ESCA (Electron Spectroscopy for Chemical Analysis) of the surface of the toner particles, the carbon element concentration dC surface of the toner particles, an oxygen element concentration dO, silicon element concentration dSi for the total concentration of the silicon element concentration dSi (dC + dO + dSi) 0.50 atomic% or more,
A toner, wherein the charge control agent is a polymer A having a structure a represented by the formula (a1).

(Wherein R ¹ represents a hydroxyl group, a carboxyl group, an alkyl group having 1 to 18 carbon atoms, or an alkoxyl group having 1 to 18 carbon atoms, and R ² represents a hydrogen atom, a hydroxyl group, or a carbon number. Represents an alkyl group having 1 to 18 carbon atoms, or an alkoxyl group having 1 to 18 carbon atoms, g represents an integer of 1 to 3, h represents an integer of 0 to 3, and h is 2 or 3. In this case, R ¹ can be independently selected, and ** is a binding site in the polymer A.)

In the measurement of ²⁹ Si-NMR of the THF-insoluble matter of the toner particles, the ratio RS (T3R) of the peak area of the structure of the formula (T3R) to the total peak area of the organosilicon polymer is
RS (T3R) ≧ 0.20 (1)
The toner according to claim 1, wherein:

In the ²⁹ Si-NMR measurement of the THF-insoluble matter of the toner particles, the peak area of the structure (SX3) in which the number of siloxy groups bonded to silicon is 3.0 with respect to the total peak area of the organosilicon polymer. The relationship between the ratio S (SX3) and the ratio of the peak area S (SX2) of the (SX2) structure in which the number of O _1/2 bonded to silicon is 2.0 is S (SX3) / S (SX2) ≧ 1 .00 (2)
The toner according to claim 1, wherein the toner satisfies the following condition.

The average thickness D of the surface layer containing the organosilicon polymer, measured by observing the cross section of the toner particles using a transmission electron microscope (TEM), is 2.5 nm or more and 150.0 nm or less. The toner according to claim 1.

The organosilicon polymer has the following formula (Z)

(R1 in the formula is a hydrocarbon group having 1 to 6 carbon atoms, and R2, R3 and R4 are each independently a halogen atom, a hydroxyl group or an alkoxy group.)
The toner according to claim 1, wherein the toner is a polymer of a compound having a structure represented by:

The toner according to claim 5, wherein R 1 in the formula (Z) is a methyl group, an ethyl group, a propyl group, or an aryl group.

7. The toner according to claim 5, wherein R 2, R 3, and R 4 in the formula (Z) are each independently an alkoxy group.

The toner according to claim 1, wherein the structure a is a partial structure represented by the formula (a2) and is contained in the polymer A.

(In the formula, R ³ represents a hydroxyl group, a carboxyl group, an alkyl group having 1 to 18 carbon atoms, or an alkoxyl group having 1 to 18 carbon atoms,
R ⁴ represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 18 carbon atoms, or an alkoxyl group having 1 to 18 carbon atoms,
R ⁵ represents a hydrogen atom or a methyl group,
i represents an integer of 1 to 3, j represents an integer of 0 to 3, and when j is 2 or 3, R ³ can be independently selected. )

The toner according to claim 1, wherein the content of the structure a in the polymer A is 10 μmol / g or more and 1500 μmol / g or less.