JP2007058087A5 - - Google Patents

Claims (17)

  A liquid developer comprising toner particles and an insulating liquid containing a docosahexaenoic acid component and a saturated fatty acid component.   When the content of the docosahexaenoic acid component in the insulating liquid is X [mol%] and the content of the saturated fatty acid component in the insulating liquid is Y [mol%], 0.5 ≦ X / Y ≦ 50 The liquid developer according to claim 1, having the relationship:   The liquid developer according to claim 1 or 2, wherein the insulating liquid is composed of glycerin and an ester of the docosahexaenoic acid component and the saturated fatty acid component.   The liquid developer according to claim 3, wherein the ester content in the insulating liquid is 90 wt% or more. The insulating liquid, the liquid developer according to any one of to the claims 1 to those containing antioxidant 4.   The liquid developer according to claim 5, wherein the content of the antioxidant is 0.01 to 15 parts by weight with respect to 100 parts by weight of the insulating liquid. The liquid developer according to claim 5 or 6 , wherein a thermal decomposition temperature of the antioxidant is 200 ° C or lower.   The liquid developer according to claim 5, wherein the antioxidant is ascorbic acid stearate. The insulating liquid, the liquid developer according to any one of to the claims 1 to those containing oxidation polymerization accelerator that promotes 8 oxidation polymerization reaction of the docosahexaenoic acid component. The liquid developer according to claim 9 , wherein the oxidative polymerization accelerator is a fatty acid metal salt. The liquid developer according to claim 9 or 10 , wherein the content of the oxidative polymerization accelerator is 0.01 to 15 parts by weight with respect to 100 parts by weight of the insulating liquid. The oxidation polymerization accelerator is a liquid developer according to any one of claims 9 to 11 contained in the insulation liquid with being encapsulated. The liquid developer according to claim 12 , wherein the encapsulation is performed by adsorbing the oxidative polymerization accelerator to a porous body and then coating the porous body with a polyether. The iodine value of the insulation liquid, the liquid developer according to any one of claims 1 to 13 is 50 to 200.   Heating at a temperature at which the oxidative polymerization accelerator and the docosahexaenoic acid component in the liquid developer having toner particles, an oxidative polymerization accelerator, and an insulating liquid containing a docosahexaenoic acid component and a saturated fatty acid component undergo an oxidative polymerization reaction A fixing method comprising fixing.   A liquid developer developing portion having toner particles, an oxidation polymerization accelerator, and an insulating liquid containing a docosahexaenoic acid component and a saturated fatty acid component;
  A transfer unit for transferring the image developed by the developing unit;
  A fixing device that heats and fixes the transfer material transferred by the transfer unit at a temperature at which the oxidative polymerization accelerator undergoes an oxidative polymerization reaction of the docosahexaenoic acid component;
An image forming apparatus comprising:   A liquid developer developing step having toner particles, an oxidation polymerization accelerator, and an insulating liquid containing a docosahexaenoic acid component and a saturated fatty acid component;
  A transfer step of transferring an image developed by the developing unit;
  A fixing step in which the transfer material transferred by the transfer portion is heated and fixed at a temperature at which the oxidative polymerization accelerator undergoes an oxidative polymerization reaction of the docosahexaenoic acid component;
An image forming method comprising: