JP2006106198A5 - - Google Patents

Claims (21)

Including toner particles containing a vinyl polymer obtained by polymerizing a vinyl monomer using an organic peroxide having a molecular weight of 174 to 240 represented by the following structural formula, and an inorganic fine powder Non-magnetic toner,
A nonmagnetic toner having a total toluene-converted organic volatile component amount of 300 ppm or less based on the toner mass in an organic volatile component analysis at 150 ° C., and a melt index of 4 to 30 measured at 135 ° C.

  The nonmagnetic toner according to claim 1, wherein the organic peroxide has a 10-hour half-life temperature of 50C to 60C. The nonmagnetic toner according to claim 1 or 2, wherein the organic peroxide has a molecular weight of 174 or more and 220 or less. The nonmagnetic toner according to claim 1, wherein the organic peroxide has a molecular weight of 174 or more and 200 or less.   The nonmagnetic toner according to any one of claims 1 to 4, wherein the total amount of the organic volatile components is 250 ppm or less. The colorant is C.I. I. Pigment blue 15, C.I. I. Pigment blue 15: 1, C.I. I. Pigment blue 15: 2, C.I. I. Pigment blue 15: 3, C.I. I. Pigment blue 15: 4, C.I. I. Pigment blue 60, C.I. I. Pigment blue 66, C.I. I. Pigment Red 2, C.I. I. Pigment Red 3, C.I. I. Pigment Red 5, C.I. I. Pigment Red 6, C.I. I. Pigment red 7, C.I. I. Pigment violet 19, C.I. I. Pigment red 23, C.I. I. Pigment red 122, C.I. I. Pigment red 144, C.I. I. Pigment red 146, C.I. I. Pigment red 150, C.I. I. Pigment red 166, C.I. I. Pigment red 177, C.I. I. Pigment red 184, C.I. I. Pigment red 185, C.I. I. Pigment red 202, C.I. I. Pigment red 206, C.I. I. Pigment red 220, C.I. I. Pigment red 221, C.I. I. Pigment red 254, C.I. I. Pigment yellow 12, C.I. I. Pigment yellow 13, C.I. I. Pigment yellow 14, C.I. I. Pigment yellow 15, C.I. I. Pigment yellow 17, C.I. I. Pigment yellow 62, C.I. I. Pigment yellow 74, C.I. I. Pigment yellow 83, C.I. I. Pigment yellow 93, C.I. I. Pigment yellow 94, C.I. I. Pigment yellow 95, C.I. I. Pigment yellow 97, C.I. I. Pigment yellow 109, C.I. I. Pigment yellow 110, C.I. I. Pigment yellow 111, C.I. I. Pigment yellow 120, C.I. I. Pigment yellow 127, C.I. I. Pigment yellow 128, C.I. I. Pigment yellow 129, C.I. I. Pigment yellow 147, C.I. I. Pigment yellow 151, C.I. I. Pigment yellow 154, C.I. I. Pigment yellow 168, C.I. I. Pigment yellow 174, C.I. I. Pigment yellow 175, C.I. I. Pigment yellow 176, C.I. I. Pigment yellow 180, C.I. I. Pigment yellow 181, C.I. I. Pigment yellow 191, and C.I. I. Characterized in that it is selected from the group consisting of CI Pigment Yellow 194, non-magnetic toner according to any one of claims 1-5. Wherein an average circularity of 0.970 or more, a non-magnetic toner according to any one of claims 1-6. The nonmagnetic toner according to any one of claims 1 to 7 , further comprising a resin having a sulfur atom. Wherein the glass transition temperature (Tg) of 30 to 80 ° C., the non-magnetic toner according to an item to any one of claims 1-8. The nonmagnetic toner according to any one of claims 1 to 9 , further comprising 2 to 20% by mass of a release agent with respect to the vinyl polymer. The average primary particle diameter of the inorganic fine powder is a 4～80Nm, and the content of the inorganic fine powder with respect to 100 parts by weight toner particles 0.1-4. Characterized in that it is a 0 parts by weight, the non-magnetic toner according to any one of claims 1-10. Wherein the inorganic fine powder, characterized in that the hydrophobized with silicone oil, a non-magnetic toner according to any one of claims 1 to 11. Wherein the inorganic fine powder, characterized in that the hydrophobized with a silane compound and a silicone oil, a non-magnetic toner according to any one of claims 1 to 12. A method for producing a non-magnetic toner comprising a step of polymerizing a monomer composition containing a vinyl monomer and a colorant using an organic peroxide to produce toner particles,
The polymerization initiator has 1) a structure represented by the following formula, 2) a molecular weight of 174 or more and 240 or less, and 3) a 10-hour half-life temperature of 50 ° C. to 60 ° C.,
A method for producing a non-magnetic toner in which the total amount of organic volatile components in terms of toluene based on the toner mass is 300 ppm or less and the melt index measured at 135 ° C. is 4 to 30 in the analysis of organic volatile components at 150 ° C. .

The method for producing a non-magnetic toner according to claim 14 , wherein the toner particles are produced in an aqueous medium. The polymerization is characterized in that it is a suspension polymerization method for producing a non-magnetic toner according to claim 14 or 15. The method for producing a nonmagnetic toner according to any one of claims 14 to 16 , wherein the molecular weight of the organic peroxide is 174 or more and 220 or less. The method for producing a nonmagnetic toner according to any one of claims 14 to 17 , wherein the molecular weight of the organic peroxide is 174 or more and 200 or less. The method for producing a nonmagnetic toner according to any one of claims 14 to 18 , wherein the total amount of the organic volatile components is 250 ppm or less. The method for producing a nonmagnetic toner according to any one of claims 14 to 19 , wherein a polymerization temperature in the polymerization is in a range of 60 to 90 ° C. The method for producing a nonmagnetic toner according to any one of claims 14 to 20 , wherein the monomer-based composition further contains a resin having a sulfur atom.