摘要:
Provided is a toner not undergoing the effect of change of temperature and humidity, with high charging stability and having good fixing property and releasability. This is an electrophotographic toner containing at least a binder resin, a colorant, a charge controller and a wax in which the binder resin comprises a polyester resin having an aromatic alcohol ingredient, the charge controller comprises an organic bentonite and the wax comprises a non-polar paraffin wax.
摘要:
Provided is a toner not undergoing the effect of change of temperature and humidity, with high charging stability and having good fixing property and releasability. This is an electrophotographic toner containing at least a binder resin, a colorant, a charge controller and a wax in which the binder resin comprises a polyester resin having an aromatic alcohol ingredient, the charge controller comprises an organic bentonite and the wax comprises a non-polar paraffin wax.
摘要:
An image forming apparatus for forming images with a toner and includes an image forming section, a paper feeding section and an image reading section, in which the non-magnetic toner is as follows: the particle size D10V and the particle size D90V of the toner satisfy the following formula (1), the particle size D50V is from 5 to 8 μm, and the content of the toner particles having a particle size of at most 5 μm is from 15 to 35% by number: 0.415≦(D10V−D90V)/D10V≦0.475 (1) wherein D10V, D50V and D90V each are a particle size where a cumulative volume from the large particle size side in the cumulative volume distribution of the toner particles reaches 10%, 50% and 90%, respectively.
摘要:
An image forming apparatus for forming images with a toner and includes an image forming section, a paper feeding section and an image reading section, in which the non-magnetic toner is as follows: the particle size D10V and the particle size D90V of the toner satisfy the following formula (1), the particle size D50V is from 5 to 8 μm, and the content of the toner particles having a particle size of at most 5 μm is from 15 to 35% by number: 0.415≦(D10V−D90V)/D10V≦0.475 (1) wherein D10V, D50V and D90V each are a particle size where a cumulative volume from the large particle size side in the cumulative volume distribution of the toner particles reaches 10%, 50% and 90%, respectively.
摘要:
In a toner at least containing a binder resin and a colorant, a value obtained by dividing a particle size D50p by a particle size D84p is 1.43 or more and 1.64 or less, wherein D50p and D84p respectively represent particle sizes at 50% and 84% of cumulative number counted from a large-size side in a cumulative number distribution. Further, in the toner, an average degree of circularity of toner particles having a volume average particle size of 1 μm or more and 4 μm or less is 0.940 or more and 0.960 or less. Further, in the toner, a content of toner particles having an average degree of circularity of 0.850 or less is 10% by number or less among the toner particles having a volume average particle size of 1 μm or more and 4 μm or less.
摘要:
A toner includes toner particles containing at least binder resin and colorant. The toner particles contain a large-sized toner particle group of particles and a small-sized toner particle group of particles having a volume average particle size smaller than that of the large-sized toner particle group. In the toner, a volume average particle size D50v is 4 μm to 8 μm at 50% in accumulated volume counted from a large particle-side in accumulated volume distribution of entire toner particles; a content of toner particles contained in a toner particle group having a volume average particle size of 7 μm or more is 24% to 47% by volume based on the entire toner particles; and a content of toner particles contained in a toner particle group having a number average particle size of 5 μm or less is 10% to 50% by number or less based on the entire toner particles.
摘要:
in a toner at least containing a binder resin and a colorant, a value obtained by dividing a particle size D50p by a particle size D84p is 1.43 or more and 1.64 or less, wherein D50p and D84p respectively represent particle sizes at 50% and 84% of cumulative number counted from a large-size side in a cumulative number distribution. Further, in the toner, an average degree of circularity of toner particles having a volume average particle size of 1 μm or more and 4 μm or less is 0.940 or more and 0.960 or less. Further, in the toner, a content of toner particles having an average degree of circularity of 0.850 or less is 10% by number or less among the toner particles having a volume average particle size of 1 μm or more and 4 μm or less.
摘要:
There is provided a toner which exhibits a quick rise of charging and excellent cleaning property and which can form high-quality images having high definition and high density. A toner envelope degree of the toner falls in a range of from 2.0 to 3.0, which degree is obtained by calculation of [(L1−L2)/L2]×100 wherein L1 represents a circumference length of a projection image of toner particles containing binder resin and a colorant, and L2 represents a length of envelope of the projection image of the toner particles.
摘要翻译:提供了一种调色剂,其显示出充电的快速上升和优异的清洁性能,并且可以形成具有高清晰度和高密度的高质量图像。 调色剂的调色剂包封度在2.0〜3.0的范围内,该程度通过计算[(L 1-L 2)/ L 2]×100获得,其中L 1表示调色剂的投影图像的周长 含有粘合剂树脂和着色剂的颗粒,L 2表示调色剂颗粒的投影图像的包络长度。
摘要:
A target specified range of a toner density is correctly set so that a toner density is consistently appropriately controlled.If a specified range within which a measured toner density TD (%) should fall is set based on an expression (2) below using a volume average diameter Dcav_vol (μm) of a magnetic carrier and a volume average diameter Dtav_vol (μm) of a toner, the target specified range can be correctly set, thereby making it possible to consistently appropriately control the toner density. TD≦{γt·Vt/Nt/(γc·Vc)}×100 (2)
摘要:
A pair of opposite end portions of a buckling exothermic body as an exothermic resistor are fixed onto a substrate via insulating members. The buckling exothermic body heats with resistance thereof by applying a voltage from a power source to the buckling exothermic body via a switch. As inner temperature of the exothermic resistor reaches a predetermined temperature or higher required for the exothermic resistor to buckle, and a compressive force exceeds a buckling load, the exothermic resistor buckles and distorts towards thermosensible paper from a non-shifted state in which there is virtually no thermal stress. As the buckled and distorted exothermic resistor comes into contact with the thermosensible paper, recording, such as printing, is performed only at the contact portion. This reduces thermal mutual interference between neighboring buckling exothermic bodies. As a result, recording of high resolution and high print quality is performed. Moreover, since, unlike the prior art, there is no need to provide an abrasion protection layer, production costs can be cut down and a smaller and lighter head can be made.