Toner and method of producing toner

A toner comprising a toner particle comprising a binder resin and C.I. Pigment Yellow 185, wherein

• the toner has a peak observed at a diffraction angle 2θ=4.00°±0.50° in an X-ray diffraction measurement using CuKα rays of a sample separated from the toner in procedure 1 described below:
• Procedure 1:
• add 160 g of sucrose to 100 mL of ion-exchanged water and dissolve the sucrose while heating in hot water to prepare a sucrose concentrate solution;
• put 31 g of the sucrose concentrated solution and 6 mL of a 10 mass % aqueous solution of a pH 7 neutral detergent for precision instrument cleaning comprising a nonionic surfactant, an anionic surfactant, and an organic builder in a centrifugation tube to prepare a mixture;
• add 2.0 g of the toner to this mixture, and loosen a lump of the toner with a spatula or a similar tool;
• next, shake the centrifugation tube by a shaker;
• after shaking, separate a precipitate from a dispersion comprising the toner by a centrifuge under conditions at a rotation speed of 3500 rpm for 30 minutes and a rotation radius of 3 cm;
• filtrate floating powder in a vacuum filtration apparatus and dry the powder at 40° C. for 1 hour or longer in a drier to obtain a dried powder;
• dissolve 1 g of the resulting powder in 20 mL of chloroform to form a solution, centrifuge the solution at a rotation speed of 15000 rpm and a rotation radius of 3 cm for 180 minutes, and discard supernatant;
• further add 20 mL of chloroform thereto, and repeat these operations twice to separate a precipitate;
• and filtrate a resulting precipitate in a vacuum filtration apparatus, and then dry a resulting solid in a drier at 40° C. for 5 hours or longer to prepare the sample.