Toner particle for liquid development and method for manufacturing the same, liquid developer, liquid developer cartridge, process cartridge, and image-forming apparatus
View Patent ↗A toner particle for liquid development is provided, the toner particle having a plurality of projections and a coat above at least a part of a surface of the toner particle, the toner particle further containing a crystal that forms at least one of the plurality of projections.
1. A toner particle for liquid development, comprising:
a plurality of projections;
a coat above at least a part of a surface of the toner particle; and
a crystal contained inside the toner particle that forms at least one of the plurality of projections.
2. The toner particle for liquid development according to claim 1 , wherein the coat is a self-assembled film or a resin.
3. The method for manufacturing the toner particle for liquid development according to claim 2 , wherein the external stimulation is temperature change.
4. The method for manufacturing the toner particle for liquid development according to claim 2 , wherein a micro-reactor is used in at least one of the manufacturing of the dispersion and the forming of the crystal.
5. The toner particle for liquid development according to claim 1 , wherein about 20% to 100% of a surface area of the toner particle is coated with the coat.
6. The toner particle for liquid development according to claim 1 , wherein the coat is solid at an ordinary temperature of 25° C.
7. The toner particle for liquid development according to claim 1 , wherein the crystal is solid at an ordinary temperature of 25° C.
8. The toner particle for liquid development according to claim 1 , wherein the crystal is monocrystal.
9. The toner particle for liquid development according to claim 1 , wherein a maximum length of a crystal which has the longest maximum length out of the crystal contained inside the toner particle is about 20% to 100% longer than a particle diameter of the toner particle.
10. The toner particle for liquid development according to claim 1 , wherein an aspect ratio of a crystal which has the longest maximum length out of the crystal contained inside the toner particle is from about 5 to about 200.
11. The toner particle for liquid development according to claim 1 , wherein the crystal is a material having a function as a coloring agent.
12. A method for manufacturing the toner particle for liquid development according to claim 1 , the method comprising:
manufacturing a dispersion in which particles are dispersed in a dispersion medium, each of the particles formed by a coat containing a material for crystal; and
forming the crystal inside of each of the particles by applying external stimulation, the formed crystal having a maximum length longer than a particle diameter of each of the particles.
13. A liquid developer, comprising:
the toner particle for liquid development according to claim 1 .
14. A liquid developer cartridge, comprising:
the liquid developer according to claim 13 .
15. A process cartridge, comprising:
the liquid developer according to claim 13 .
16. An image-forming apparatus, comprising:
an image holding member;
a latent image-forming unit that forms a latent image on a surface of the image holding member;
a developing unit that forms a toner image by developing the latent image with the liquid developer according to claim 13 ;
a transfer unit that transfers the toner image to a transfer-receiving material from the image holding member; and
a fixing unit that fixes the toner image on the transfer-receiving material.
17. The toner particle for liquid development according to claim 1 , wherein a part of the crystal that is contained inside the toner particle protrudes from a surface of the coat.
18. The toner particle for liquid development according to claim 1 , wherein a maximum length of a crystal which has the longest maximum length out of the crystal contained inside the toner particle is 50% or more longer than a particle diameter of the toner particle.