TONER AND IMAGE FORMING METHOD
First Claim
1. A toner, comprising:
- toner particles each containing a binder resin and a wax; and
silica fine particles on surfaces of the toner particles, wherein;
the silica fine particles have a number-average particle diameter of primary particles of 60 nm or more and 300 nm or less;
a coverage rate of the surfaces of the toner particles with the silica fine particles is 15% or more and 95% or less; and
the toner has a uniaxial collapse stress at a maximum consolidation stress of 10.0 kPa, of 2.5 kPa or more and 3.5 kPa or less.
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Accused Products
Abstract
Provided is a toner that allows a transferred image to be stably output regardless of smoothness of a transfer material even under high-temperature and high-humidity environment or under low-temperature and low-humidity environment, that is excellent in cleanability for a transfer member even at the time of high-speed printing, and that causes less member contamination. The toner is a toner including toner particles each containing a binder resin and a wax, and silica fine particles on surfaces of the toner particles, wherein the silica fine particles have a number-average particle diameter of primary particles of 60 nm or more and 300 nm or less, a coverage rate of the surfaces of the toner particles with the silica fine particles is 15% or more and 95% or less, and the toner has a uniaxial collapse stress at a maximum consolidation stress of 10.0 kPa, of 2.5 kPa or more and 3.5 kPa or less.
38 Citations
11 Claims
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1. A toner, comprising:
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toner particles each containing a binder resin and a wax; and silica fine particles on surfaces of the toner particles, wherein; the silica fine particles have a number-average particle diameter of primary particles of 60 nm or more and 300 nm or less; a coverage rate of the surfaces of the toner particles with the silica fine particles is 15% or more and 95% or less; and the toner has a uniaxial collapse stress at a maximum consolidation stress of 10.0 kPa, of 2.5 kPa or more and 3.5 kPa or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An image forming method, comprising:
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charging a surface of a photosensitive member; forming an electrostatic latent image on the photosensitive member by light exposure; developing the electrostatic latent image by a toner to form a toner image; primarily transferring the toner image to an intermediate transfer member and then secondarily transferring the toner image on the intermediate transfer member to a transfer material; and removing a transfer residue toner remaining on the intermediate transfer member after the primary transferring, from the intermediate transfer member by a cleaning member, wherein; the toner comprises toner particles each containing a binder resin and a wax, and silica fine particles on surfaces of the toner particles; the silica fine particles have a number-average particle diameter of primary particles of 60 nm or more and 300 nm or less; a coverage rate of the surfaces of the toner particles with the silica fine particles is 15% or more and 95% or less; and the toner has a uniaxial collapse stress at a maximum consolidation stress of 10.0 kPa, of 2.5 kPa or more and 3.5 kPa or less.
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Specification
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- Resources
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Current AssigneeCanon Ayutthaya Limited (Canon Inc.)
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Original AssigneeCanon Ayutthaya Limited (Canon Inc.)
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InventorsKanno, Ichiro, Komatsu, Nozomu, Kobori, Takakuni, Hashimoto, Takeshi, Iwasaki, Yosuke, Fujikawa, Hiroyuki, Kaneko, Hideki
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Application NumberUS14/261,140Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current430/108.7CPC Class CodesG03G 9/0821 characterised by physical p...G03G 9/0825 characterised by their stru...G03G 9/09725 Silicon-oxides; Silicates
