JP2006349894A5

JP2006349894A5 -

Info

Publication number: JP2006349894A5
Application number: JP2005174682A
Authority: JP
Filing date: 2005-06-15
Publication date: 2008-07-17

Claims

In a toner containing toner particles containing at least a binder resin and a colorant,
(1) The storage elastic modulus (G′120) at a temperature of 120 ° C. of the toner is 2000 to 5000 Pa,
(2) The loss tangent (G ″ / G ′ = tan δ), which is the ratio between the storage elastic modulus (G ′) and the loss elastic modulus (G ″) of the toner, is in the range of −50 ° C. to 10 ° C. It has a maximum value (tan δP1) of 01 to 0.5,
( 3 ) The toner contains 1 to 25% by mass of the polymer (A) having a glass transition temperature (Tg) in the temperature range of −50 ° C. to 10 ° C. with respect to the total binder resin component ,
(4) A toner wherein the toner particles are toner particles produced by agglomerating fine particles of the polymer (A), binder resin fine particles, wax fine particles and a colorant .

The toner according to claim 1, wherein the toner has a maximum value (tan δP1) that is 0.02 to 0.2 in a temperature range of −40 ° C. to −5 ° C. 2.

2. The toner according to claim 1, wherein the toner has a maximum value (tan δP1) of 0.03 to 0.1 in a temperature range of −35 ° C. to −10 ° C. 3.

Toner, storage modulus of 250 to 500Pa in temperature 180 ° C. has a (G'180), the ratio (G'120 / G'180) 1 through claim, characterized in that a 5 to 25 4. The toner according to any one of 3.

The toner has a storage elastic modulus (G′120) of 2700 to 4500 Pa at a temperature of 120 ° C., a storage elastic modulus (G′180) of 270 to 450 Pa at a temperature of 180 ° C., and the ratio (G′120 The toner according to claim 1, wherein / G′180) is 8 to 23. 5.

The toner has a storage elastic modulus (G′120) of 3000 to 4000 Pa at a temperature of 120 ° C., a storage elastic modulus (G′180) of 300 to 400 Pa at a temperature of 180 ° C., and a ratio (G′120 The toner according to claim 1, wherein / G′180) is 10 to 20. 5.

The toner contains 3 to 20% by mass of a polymer (A) having a glass transition temperature (Tg) in a temperature range of -40 ° C to 10 ° C with respect to all binder resin components. The toner according to any one of 6.

2. The toner according to claim 1, wherein the toner contains 5 to 15% by mass of the polymer (A) having a glass transition temperature (Tg) in the temperature range of −35 ° C. to −10 ° C. with respect to the total binder resin component. The toner according to any one of Items 6 to 6.

An agglomeration step in which the toner according to any one of claims 1 to 8 forms agglomerated particles of the polymer (A) in a dispersion containing at least fine particles of the polymer (A); Manufactured through a process including at least an adhesion step of adhering at least one resin particle of vinyl polymer fine particles, polyester fine particles or hybrid resin fine particles having a vinyl polymer unit and a polyester unit in polymer molecules to the surface of the aggregated particles And a method for producing a toner.

(I) forming a first electrostatic charge image on the image carrier, developing the electrostatic charge image with a first toner selected from the group consisting of cyan toner, magenta toner, yellow toner and black toner; A toner image is formed on the image carrier, and the first toner image is transferred through or without the intermediate transfer member;
(Ii) forming a second electrostatic charge image on the image carrier, developing the electrostatic charge image with a second toner selected from the group consisting of cyan toner, magenta toner, yellow toner and black toner; A toner image is formed on the image carrier, and the second toner image is transferred with or without the intermediate transfer member;
(Iii) forming a third electrostatic charge image on the image carrier, developing the electrostatic charge image with a third toner selected from the group consisting of cyan toner, magenta toner, yellow toner, and black toner; Forming a toner image on the image carrier,
(Iv) forming a fourth electrostatic charge image on the image carrier, developing the electrostatic charge image with a fourth toner selected from the group consisting of cyan toner, magenta toner, yellow toner and black toner; Forming a toner image on the image carrier,
(V) a full-color image formability method for forming a full-color image on a transfer material by heat-fixing a cyan toner image, a magenta toner image, a yellow toner image and a black toner image on the transfer material;
The full-color image forming method, wherein the toner is the toner according to claim 1.

It is used in an image forming apparatus for forming an image by transferring toner to an electrostatic latent image formed on a photoreceptor and visualizing it to form a toner image, and transferring the toner image to a transfer material.
A photosensitive member; a charging unit that charges the photosensitive member; a latent image forming unit that forms an electrostatic latent image on the photosensitive member; a transfer unit that transfers the toner image onto a recording material; And at least one means selected from cleaning means for removing toner remaining on the photoconductor after the image is transferred, and developing the electrostatic latent image formed on the photoconductor with toner. Supported integrally with the developing means for forming an image,
The image forming apparatus according to claim 1, wherein the toner is the toner according to claim 1.

12. The image forming apparatus according to claim 11, wherein the photosensitive member is an electrophotographic photosensitive member having an organic photosensitive layer, and has a curable surface layer.

The image forming apparatus according to claim 11, wherein the photosensitive member is an amorphous silicon drum.