Toner and method for producing the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYasuhito Yuasa, Noriaki Hirota, Masahisa Maeda
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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYasuhito Yuasa, Noriaki Hirota, Masahisa Maeda
Estimating the term…
The present invention provides a toner comprising a binding resin, a colorant, and an ester based wax having an iodine value of not more than 25 and a saponification value of 30 to 300 (for example, at least one selected from the group consisting of meadowfoam oil and derivatives thereof and jojoba oil and derivatives thereof) and a method for producing the same. The present invention also provides a toner comprising silica fine powder containing a component having a polydimethyl siloxane skeleton extracted by an organic solvent at a content of not more than 2.5 wt %, and a method for producing the same. This stabilizes the chargeability and flowability of the toner during long period use, and eliminates the filming on a photoconductive member or a transfer medium, Moreover, toner that provides good fixability, anti-offset properties, waste toner recycle properties, and transfer efficiency can be obtained with good reproducibility.
A toner comprising silica fine powder, wherein a content of a component having a polydimethyl siloxane skeleton in the silica fine powder that is extracted by an organic solvent is not more than 2.5 wt %.
A toner comprising silica fine powder, wherein a content of a component having a polydimethyl siloxane skeleton in the toner that is extracted by an organic solvent is not more than 0.09 wt %.
A method for producing a toner comprising silica fine powder,
Dependencies are inferred from the claim text.