摘要:
An image forming method includes the steps of:(1) forming a first unfixed image of color toner on one side of a transfer material, wherein the color toner has a weight average particle size of 3 to 7 .mu.m and includes color toner particles having a particle size of 4 .mu.m or less in a range of 10 to 70 by number, color toner particles having a particle size of 5.04 .mu.m or less in a range of 40% by number or more, color toner particles having a particle size of 8 .mu.m or more in a range of 2 to 20% by volume, and color toner particles having a particle size of 10.08 .mu.m or more in a range of 6% by volume or less; (2) heating and melting the color toner of the first unfixed image by heating, pressing and fixing means which includes a rotation body for fixing having an elastic layer to fix the first unfixed image to the one side of the transfer material; (3) forming a second unfixed image of color toner on the other side of the transfer material, wherein the color toner has a weight average particle size of 3 to 7 .mu.m and includes color toner particles having a particle size of 4 .mu.m or less in a range of 10 to 70% by number, color toner particles having a particle size of 5.04 .mu.m or less in a range of 40% by number or more, color toner particles having a particle size of 8 .mu.m or more in a range of 2 to 20% by volume, and color toner particles having a particle size of 10.08 .mu.m or more in a range of 6% by volume or less; and (4) heating and melting a color toner of the second fixed image by the heating, pressing and fixing means to fix the second unfixed image to the other side of the transfer material, whereby color images are formed on both sides of the transfer material.
摘要:
The toner for developing an electrostatic image, excellent in any environmental conditions, comprises the colorant-containing resin particles and at least one kind of fine titanium oxide powder which has been made hydrophobic by treating in an aqueous medium; the fine titanium oxide powder has an average particle diameter of from 0.001 .mu.m to 0.2 .mu.m and a hydrophobicity of from 20% to 80%.
摘要:
A magnetic toner includes: magnetic toner particles each comprising at least a binder resin and magnetic toner, and inorganic fine powder. The magnetic toner has an average circularity of at least 0.970, and a magnetization of 10-50 Am2/kg at a magnetic field of 79.6 kA/m. The magnetic powder comprises at least magnetic iron oxide. The magnetic toner particles retain carbon in an amount of A and iron in an amount of B at surfaces thereof as measured by X-ray photoelectron spectroscopy, satisfying: B/A
摘要翻译:磁性调色剂包括:各自至少包含粘合剂树脂和磁性调色剂的磁性调色剂颗粒和无机细粉末。 磁性调色剂在79.6kA / m的磁场下的平均圆形度为至少0.970,磁化强度为10-50Am 2 / kg。 磁粉至少包含磁性氧化铁。 磁性调色剂颗粒通过X射线光电子能谱法测定其表面的B量的A和铁的碳,满足:B / A <0.001。 粘合剂树脂包括由至少包含苯乙烯单体的单体的聚合形成的树脂。 磁性调色剂的残留苯乙烯单体含量小于300ppm,并且包含满足以下关系的至少50%的调色剂颗粒:D / C <= 0.02,其中C表示磁性的体积平均粒径 调色剂,D表示磁性调色剂颗粒的表面与磁性调色剂颗粒中所含的磁性粉末颗粒之间的最小距离。 由于上述特征,即使在无清洁器模式的图像形成系统中,磁性调色剂也能表现出良好的电摄影性能,包括极佳的带电性和少量的转印残留调色剂。
摘要:
A carrier for electrophotography and a two component type developer using the carrier. The carrier is composed of magnetic particles of a magnetic ferrite component represented by Formula: (Fe2O3)X(MnO)Y(A)Z. An image forming method is also disclosed which uses the two component type developer.
摘要:
Magnetic particles for charging means disposed in contact with an electrophotographic photosensitive member for charging the electrophotographic photosensitive member based on a voltage applied thereto are provided as particles of a ferrite component represented by the following formula (1): (Fe2O3)X(A)Y(B)Z (1), wherein A denotes at least one metal oxide component selected from the group consisting of Li2O, MnO and MgO, B denotes at least one metal oxide component different from A; X, Y and Z denote numbers representing mol ratios and satisfying the following conditions: 0.2
摘要:
A carrier for electrophotography and a two component type developer using the carrier. The carrier is composed of magnetic particles of a magnetic ferrite component represented by Formula: (Fe2O3)X(MnO)Y(A)Z. An image forming method is also disclosed which uses the two component type developer.
摘要:
A carrier for electrophotography is constituted by magnetic carrier core particles and a resin coating layer coating the magnetic carrier core particles. The carrier core particles contain a magnetic ferrite component represented by the following formula (I): (Fe.sub.2 O.sub.3).sub.x (A).sub.y (B).sub.z (I), wherein A denotes a member selected from the group consisting of MgO, AgO and mixtures thereof; B denotes a member selected from the group consisting of Li.sub.2 O, MnO, CaO, SrO, Al.sub.2 O.sub.3, SiO.sub.2 and mixtures thereof; and x, y and z are numbers representing weight ratios and satisfying the relation of: 0.2.ltoreq.x.ltoreq.0.95, 0.005.ltoreq.y.ltoreq.0.3, 0
摘要翻译:用于电子照相的载体由磁性载体芯颗粒和涂覆磁性载体芯颗粒的树脂涂层构成。 载体芯颗粒包含由下式(I)表示的磁性铁氧体组分:( Fe 2 O 3)x(A)y(B)z(I),其中A表示选自MgO,AgO和混合物 的; B表示选自Li2O,MnO,CaO,SrO,Al2O3,SiO2及其混合物的成员; 并且x,y和z是表示重量比的数字,并且满足以下关系:0.2≤x≤0.95,0.003≤y≤0.3,0≤z≤0.795,x + y + z = 1。 如此形成的涂覆载体颗粒在连续成像中表现出优异的性能。
摘要:
A push type switch which enables an operator to obtain an upscale impression when he operates the push type switch. A switch body 3 is rigidly fixed to a printed wiring board 5. A casing 7 having a plurality of guide grooves 71h is fixed to the printed wiring board 5. A plurality of rails 91a provided on a knob 9 capable of transmitting a pushing force to the switch body 3 are slidably inserted into the guide grooves 71h such that the knob 9 can slide on the casing 7. A grease is applied to the guide grooves 71h and the rails 91a. The viscosity of the grease is set to be within a range of 1000 to 2750 Pa.
摘要:
The objects of the present invention are to provide a toner excellent in transferability, little remaining on the photosensitive member and causing no defective image in roll-aided transfer (or at least such a phenomenon is well-controlled), and also to provide an image forming method using the same toner. The above objects are achieved when the toner contains a binder resin and colorant, inorganic fine particles, and a hydrotalcite compound shown by the formula: M1y12+M2y22+ . . . Mjyj2+L1x13+L2x23+ . . . Lkxk3+(OH)2.(X/n)An−.mH2O (1) wherein 0
摘要:
The present invention provides a toner, particularly color toner, for developing an electrostatic image, which comprises toner particles containing a mixture of a binder resin, a coloring agend and compounds (I) and (II).