摘要:
The present invention relates to an electrostatic image-developing toner which contains binding resin, a coloring agent, and a releasing agent, as well as to a toner composition and to a method for producing the toner composition. The electrostatic image-developing toner is produced by: (1) a suspension polymerization process (S1) comprising: 1-1) a step of preparing an aqueous dispersion medium; 1-2) a step of dispersing and dissolving a polymerizable monomer mixture; 1-3) a droplet-preparing step of micronizing the liquid prepared in step 1-2) into the liquid prepared in the step 1-1) with high shearing force; and 1-4) a step of radically polymerizing the microparticle liquid droplet prepared in step 1-3); (2) a seeded polymerization process (S2) comprising: 2-1) a step of dissolving and dispersing the releasing agent; and 2-2) a step of the seeded polymerization of the liquid prepared in step 2-1); (3) a process in which particles produced in the suspension polymerization process (S1) and in the seeded polymerization process (S2) agglomerate; (4) a process of fusing the particles agglomerated in process (3) by means of heat; (5) a process of cleaning and drying the toner produced in the process (4); and (6) a process of adding an agent for providing the toner produced in the process (5) with electrostatic properties and flowability.
摘要:
본 발명은 중합 토너의 제조 방법에 관한 것으로, 특히 인산 칼슘을 포함하는 수계 분산매를 형성하는 단계; 중량 평균분자량 2,000 내지 200,000의 스티렌계 안료안정제, 전하조절제, 안료, 및 바인더 수지용 단량체를 포함하는 단량체 혼합물을 형성하는 단계; 상기 단량체 혼합물을 상기 수계 분산매에 액적 형태로 분산시키는 단계; 및 상기 액적 형태로 분산된 단량체 혼합물을 현탁 중합하는 단계를 포함하고, 상기 단량체 혼합물 100 중량부에 대하여 상기 인산칼슘을 2 내지 6 중량부로 사용하는 토너의 제조 방법 및 이로부터 제조된 중합 토너에 관한 것이다.
摘要:
A natural oil-based toner resin for producing toner in developing electrophotographic image comprising a copolymer of unsaturated polyester resins and vinyl monomers, wherein the polyester resins have a molecular weight of 500 to 30000 and obtained from polycondensation between a polycarboxylic acid, a natural oil or derivative thereof and a polyol. The toner resin in emulsion form is mixed with fine suspensions or emulsions of a colourant and a charge control agent; and a flocculating agent is incorporated therein to induce aggregation for forming particles of desired sizes, and subsequently the temperature is suitably raised to cause coalescence to produce raw toner particles of regular shape and smooth surface. The raw toner particles are washed and dried, and treated with suitable additives to produce the finished product of chemically produced toner.
摘要:
Dispersions and methods for forming dispersions that include a higher crystallinity polyolefin and at least one dispersing agent are disclosed. Various applications for use of the dispersions are also disclosed.
摘要:
A method for producing toner, and a toner composition, which includes polymer binder and a release agent composition that has relatively high viscosity and associated melting characteristics that improve filming resistance and/or fusing performance. The toner may be prepared by a chemical process wherein the toner particles may be grown in an aqueous solution to obtain a desired toner particle size.
摘要:
The present disclosure relates generally to chemically prepared toner (CPT) that employs a regulated cooling process subsequent to coalescence and fusing. The cooling process may influence the distribution of domain morphology of the components within a toner particle such as controlling release agent domain formation and accompanying migration to the toner particle surface.
摘要:
A process for the manufacture of a toner comprising toner particles which comprise at least resin and colorant, the process comprising the steps of: providing a mixed dispersion of at least primary resin particles and primary colorant particles stabilised by two or more surfactants in a liquid medium, the surfactants comprising at least a first ionic surfactant and a second ionic surfactant of the same polarity as the first ionic surfactant, wherein the first and second ionic surfactants have different linear chain lengths; and causing the primary particles to associate.
摘要:
The present disclosure relates to chemically processed toner, wherein fuser release agent (wax) may be dispersed in a fluid containing a dispersant. Introduced to the wax dispersion are one or more polymerizable monomers which may be polymerized to form a latex of polymer particles. The polymer particles may then serve as a binder for the formation of toner for use in an electrophotographic printer. The polymerizable monomers may utilize acrylic esters that include relatively long chain hydrocarbon type substitution.
摘要:
Provided are a method of preparing a toner using a micro-suspension particle, and a toner prepared using the method. The method of preparing the toner using the disclosed micro-suspension particle include preparing a mixture by mixing a resin having acidic groups, a master batch of coloring pigment, and at least one additive with an organic solvent, and then neutralizing the acid groups of the resin with a base; forming a micro-suspension by adding the prepared mixture to a dispersion medium; and forming a toner composition by removing the organic solvent from the prepared micro-suspension. Therefore, the method of preparing a toner using the disclosed micro-suspension particle and a toner prepared using the same can save manufacturing costs, and can improve charging ability and cleaning properties of the toner. Moreover, the toner can be used in electrophotographic image forming devices.