摘要:
A toner for developing an electrostatic image, comprises a binder resin and a colorant. Such binder resin contains a THF-insoluble matter in an amount of less than 10 wt. % based on the binder resin, and, in the molecular weight distribution measured by GPC (gel permeation chromatography) of a THF-soluble matter, has a weight average molecular weight/number average molecular weight (Mw/Mn) of .gtoreq.18, a molecular weight peak MA in the region of a molecular weight of from 3,000 to 20,000, a molecular weight peak MB in the region of a molecular weight of from 380,000 to 1,000,000, a molecular weight minimum Md in the region of a molecular weight of from 20,000 to 380,000, provided that MB/MA is in the range of from 30 to 150, and a molecular weight distribution curve area ratio SA:SB:Sd of 1:0.3 to 0.8:0.35 to 0.8.
摘要:
A toner for developing an electrostatic image, comprises a binder resin and a colorant. Such binder resin contains a THF-insoluble component in an amount of less than 10 wt. % based on the binder resin, and, in the molecular weight distribution measured by GPC (gel permeation chromatography) of a THF-soluble component, has a weight average molecular weight/number average molecular weight (Mw/Mn) of .gtoreq.18, a molecular weight peak MA in the region of a molecular weight of from 3,000 to 20,000, a molecular weight peak MB in the region of a molecular weight of from 380,000 to 1,000,000, a molecular weight minimum Md in the region of a molecular weight of from 20,000 to 380,000, provided that MB/MA is in the range of from 30 to 150, and a molecular weight distribution curve area ratio SA:SB:Sd of 1:0.3 to 0.8:0.35 to 0.8.
摘要翻译:用于显影静电图像的调色剂包括粘合剂树脂和着色剂。 这种粘合剂树脂含有少于10重量%的THF不溶性组分。 ,基于粘合剂树脂的%,通过THF可溶性组分的GPC(凝胶渗透色谱法)测定的分子量分布具有重均分子量/数均分子量(M(OVS)w / M )n)≥18,分子量为3,000〜20,000的分子量峰值MA,分子量为380,000〜1,000,000的分子量峰值MB,分子量最小值Md在 分子量为20,000〜380,000的区域,条件是MB / MA在30〜150的范围内,分子量分布曲线面积比SA:SB:Sd为1:0.3〜0.8:0.35〜0.8 。
摘要:
A heat fixable toner comprises a binder resin and a release agent. The binder resin comprises a polyester resin, and the release agent comprises a graft-modified polyolefin. A recording medium containing a toner image of said heat fixable toner is heat-fixed by contacting the recording medium with a heater element through a film interposed therebetween. After the heat-fixing step, the film is peeled from the fixed toner image while the film surface temperature is higher than the endothermic peak temperature of the toner.
摘要:
A method of heat-fixing a visible image of toner to a recording medium comprises applying a toner image onto the recording medium, whereinthe toner to form said toner image or the resin component of the toner has the properties such that the melt viscosity .eta.' measured by an overhead-type flow tester is from 10.sup.3 to 10.sup.6 poise at a temperature within the temperature range of from 120.degree. C. to 150.degree. C., and the absolute value of the inclination of a graph is not more than 0.50 ln (poise)/.degree.C. when the natural logarithms ln.eta. of the melt viscosities at 120.degree. C. and 150.degree. C. are plotted with respect to the temperatures; and heat-fixing the toner image retained on the recording medium to the recording medium by use of a heater element as stationarily supported and a pressure member that brings said recording medium into close contact with said heater element through a film interposed between them.
摘要:
A heat fixable toner comprises a binder resin and a release agent. The binder resin comprises a polyester resin, and the release agent comprises a graft-modified polyolefin.
摘要:
A toner for developing electrostatic images contains toner particles containing at least a binder resin and a colorant as well as a fine powder comprised of base particles on which crystalline low resistance tin oxide films are formed. The crystalline low resistance tin oxide contains less than 100 ppm of antimony, arsenic and phosphorus, and has an oxygen deficiency structure. The toner is excellent in strength and can consistently give high quality images under any environmental conditions.
摘要:
An image forming process is disclosed which uses a non-magnetic one-component type developer comprising a finder resin and a releasing agent having specific properties. The developer has such advantages as being excellent in low-temperature fixability as well as anti-offset property.
摘要:
A toner for developing electrostatic images is comprised of a binder resin and a wax. The binder resin contains as a primary component a polyester resin having a soft segment. The wax has, in its endothermic peaks at the time of temperature rise and exothermic peaks at the time of temperature drop in the DSC curve measured using a differential scanning calorimeter; (i) an endothermic onset temperature within the range of from 50° C. to 110° C.; (ii) at least one endothermic peak P1 within the range of from 70° C. to 130° C. at the time of temperature rise; and (iii) a maximum exothermic peak at the time of temperature drop, within the range of plus-minus 9° C. of the endothermic peak P1.
摘要:
A motor driving integrated circuit for controlling motor driving, comprising: a data signal input terminal; a data signal receiving circuit configured to receive a data signal inputted from the data signal input terminal; a control circuit configured to control the motor driving integrated circuit based on a first data received through the data signal receiving circuit; and a pulse generating circuit configured to generate a pulse signal for PWM (Pulse Width Modulation)—controlling a motor coil based on a second data signal received through the data signal receiving circuit, the pulse generating circuit including: a rectangular signal generating circuit configured to generate a plurality of rectangular signals different in pulse width; and a synthesizing circuit configured to synthesize the plurality of rectangular signals outputted from the rectangular signal generating circuit to generate the pulse signal with a duty ratio corresponding to the second data signal.
摘要:
An image forming apparatus provided with a photosensitive member, a charging device for charging the photosensitive member, a developing device for developing an electrostatic image formed on the photosensitive member by a developer, a cleaning blade for removing the developer residual on the photosensitive member, a rubbing member provided upstream of the cleaning blade in the direction of rotation of the photosensitive member for rubbing the photosensitive member to assist the cleaning blade in cleaning, and a controller for controlling the surface temperature of the photosensitive member, wherein the photosensitive member has the HU (universal hardness value) of 150 N/mm2 or greater and 220 N/mm2 or less, and the elastic deformation rate of 43% or greater and 65% or less.