Abstract: A toner for developing an electrostatic image, including a binder, a coloring agent and a charge controlling agent. When that portion of the toner which has a particle diameter of 5.04 &mgr;m or less accounts for 15-60% of the total number N of the toner, that portion of the toner which provides a number average particle diameter of 4.0 to 4.5 &mgr;m has such a content C1% by weight of the charge controlling agent that gives a ratio of C1/CT of 1.00 to 1.10, where CT is a total amount, in terms of % by weight, of the charge controlling agent in the toner. When that portion of the toner which has a particle diameter of 5.04 &mgr;m or less accounts for 15% or less of the total number N, that portion of the toner which provides a number average particle diameter of 4.2 to 4.8 &mgr;m has such a content C2% by weight of the charge controlling agent that gives a ratio of C2/CT of 1.02 to 1.15.

Abstract: A toner for developing an electrostatic image, including a binder, a coloring agent and a charge controlling agent. When that portion of the toner which has a particle diameter of 5.04 &mgr;m or less accounts for 15-60% of the total number N of the toner, that portion of the toner which provides a number average particle diameter of 4.0 to 4.5 &mgr;m has such a content C1% by weight of the charge controlling agent that gives a ratio of C1/CT of 1.00 to 1.10, where CT is a total amount, in terms of % by weight, of the charge controlling agent in the toner. When that portion of the toner which has a particle diameter of 5.04 &mgr;m or less accounts for 15% or less of the total number N, that portion of the toner which provides a number average particle diameter of 4.2 to 4.8 &mgr;m has such a content C2% by weight of the charge controlling agent that gives a ratio of C2/CT of 1.02 to 1.15.

Abstract: An electrophotographic toner including a colorant and a binder resin including at least a styrene resin, wherein the toner further includes one or more styrene oligomers in an amount not greater than 100 ppm. An electrophotographic image forming method is also disclosed in which an electrostatic latent image formed on an image bearing member is developed with the toner.

Abstract: A method of forming images on an image receiving material including a non-contact thermal fusing image fixing step employs a black toner made of black toner particles, a yellow toner made of yellow toner particles, a magenta toner made of magenta toner particles and a cyan toner made of cyan toner particles, the black toner particles having a greater volume mean diameter than the volume mean diameter of the toner particles of any of the yellow toner, the magenta toner and the cyan toner.

Abstract: A color toner comprises a binder resin, a coloring agent, a release agent and a charge controlling agent, wherein the release agent dispersed in the binder resin has an average particle diameter of from about 0.1 to about 2 &mgr;m and wherein a fixed color toner image, which is developed and fixed using the toner, has a Haze factor less than about 20% when the image has an image density of 1.5. The color toner produces images having good image qualities such as good color reproducibility.

Abstract: A toner including a colorant and a binder resin, wherein the ratio of a melt viscosity .eta.120 of the toner at 120.degree. C. to a melt viscosity .eta.100 of the toner at 100.degree. C. is greater than 0.06 and less than 0.15. An image forming method is provided which includes the steps of forming a toner image on a receiving material with the toner and heating the toner image to fix the toner image. Provided that the toner image has a gloss y when a heating temperature in the heating step is x, the gloss y preferably changes depending on the heating temperature x such that the relationship between the gloss y and the heating temperature x, y=f(x), is within the range between a line 1, f(x)=0.08x-6, and a line 2, f(x)=0.6x-50.

Abstract: An image forming method including the steps of providing a black toner, a yellow toner, a magenta toner and a cyan toner, wherein each toner includes a binder resin, a colorant and an external additive, wherein the external additive contains a silica, and wherein the content by weight of the external additive in the black toner is greater than any one of those in the yellow, magenta and cyan toner; developing an electrostatic latent image formed on an image bearing member with one of the toners to form a toner image; repeating the developing operation mentioned above using the other toners; transferring the toner images to a receiving material; and heating the toner images using a non-contact fixing device to fix the toner images.

Abstract: A color toner comprises a binder resin, a coloring agent, a release agent and a charge controlling agent, wherein the release agent dispersed in the binder resin has an average particle diameter of from about 0.1 to about 2 .mu.m and wherein a fixed color toner image, which is developed and fixed using the toner, has a Haze factor less than about 20% when the image has an image density of 1.5. The color toner produces images having good image qualities such as good color reproducibility.

Abstract: An ink composition contains a carrier medium and charged particles containing a coloring agent, which ink composition satisfies at least one condition of condition A or B: condition A that the specific charge quantity of the charged particles is in a range of 10 to 1,000 .mu.C/g with a positive or negative polarity; and condition B that the specific resistance of the ink composition is 10.sup.10 .OMEGA.cm or more; and ink-jet recording methods using the ink composition are proposed.

Abstract: A yellow toner for full-color electrophotography is made of yellow toner particles, each toner particle containing a binder resin and C.I. Pigment Yellow 62 and/or C.I. Pigment Yellow 168 as a yellow coloring agent. The above-mentioned yellow toner is used in combination with a carrier to prepare a two-component yellow developer.