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AssigneeKonica Corporation
InventorsMeizo Shirose, Hiroshi Yamazaki, Hiroyuki Yamada, Asao matsushima, Tatsuya Nagase
Estimating the term…
An image forming method is disclosed. The method comprises the steps of forming a latent image on a latent image carrying member, developing the latent image by a developer containing a toner, transferring the toner image onto an intermediate transfer member, transferring the toner image transferred on the intermediate transfer member onto a image forming support, and fixing the toner image formed on the image forming support, wherein the toner contains a resin and a colorant, and the toner is constituted by toner particles having a variation coefficient of the shape coefficient of not more than 16% and a number variation coefficient of the particle size distribution of not more than 27%.
An image forming method comprising the steps of
An image forming method comprising the steps of
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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Electrographic processes using a charge pattern: fixing, e.g. by using heat
With toner particles: characterised by the dimensions of the particles
Characterised by the developing step, e.g. the properties of the colour developers: developing using a step for deposition of subtractive colorant…
Electrography
Term end not estimated
This invention relates to a toner for developing a static latent image and an image forming method.
An image forming method has been known in which a latent image formed on a latent image carrying member is developed by a toner, and the toner image is once transferred onto an intermediate transfer member and then transferred onto an image forming support and fixed. Such the method is different from a usual method in which the toner image formed on the latent image carrying member is directly transferred on the image forming support. In the former method, a toner having a stable charging ability is necessary since the toner image is subjected to plural times of transfer.
On a toner prepared by a usual crashing method, a problem is raised that the color reproducibility of the color image is degraded since the material dispersed in the toner is non-uniformly existed at the crashed surface of the toner particle, accordingly, the surface property of each of the toner particles is difficultly made uniform and the fluctuation of the transfer is tend to be occurred.
FIG. 1 is a drawing describing a reaction apparatus having a single step stirring propeller.
FIG. 2 is an oblique view of an example of reaction apparatus having a stirring propeller to be preferably used.
FIG. 3 is a cross section of the apparatus shown in FIG. 2.
It has been found by the inventors that the image formation can be stabilized by controlling the physical parameters of the toner particle to the later-mentioned specific values even in the image forming method including an intermediate transfer step using a toner having a high mold-releasing ability.
Toner for developing electrostatic latent image according to the invention is described.
It has been found by the inventors that the foregoing problems can be solved by the use of the toner having a variation coefficient of the shape coefficient of not more than 16% and a number variation coefficient of the particle diameter distribution of not more than 27%.