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US 7,452,654 B2Granted
Toner production method and toner production apparatus
AssigneeKonica Minolta Business Technologies, Inc.
InventorsNaohiro Hirose, Ken Ohmura
Life of this patent
Estimating the term…
Abstract
A toner production method includes the step of: controlling a shape of toner particles in a shape controlling region to control the shape of toner particles in a water based medium, wherein the shape controlling region has a toner channel for the toner particles and a temperature controller capable of controlling at least two zones.
Claims11
A toner production method comprising the steps of:
- coalescing resinous particles from a water based medium of a resinous particle dispersion to form toner particles in a coalescing region of a toner channel, the coalescing region having at least two temperature coalescing zones, each of the temperature coalescing zones positioned serially along a flow direction of the toner channel in the coalescing region;
- shape-controlling of the toner particles in the water based medium in a shape-controlling region of the toner channel, the shape-controlling region downstream of the coalescing region in the toner channel, the shape-controlling region having at least two temperature shape-controlling zones, each of the temperature shape-controlling zones positioned serially along the flow direction of the toner channel in the shape-controlling region;
- and
- temperature-controlling each of the temperature coalescing zones and each of the temperature shape-controlling zones independently with a temperature controller.
1 more element
A toner production method comprising the steps of:
- polymerizing at least a polymerizable monomer and a colorant in a water medium by a polymerizing reaction in a polymerizing region of a toner channel to form resinous particles, the polymerizable monomer and the color fed continuously to the toner channel;
- shape-controlling of toner particles formed from the resinous particles in the water medium in a shape-controlling region of the toner channel, the shape-controlling region downstream of the polyrnerizing region in the toner channel, the shape-controlling region having at least two temperature shape-controlling zones, each of the temperature shape-controlling zones positioned serially along a flow direction of the toner channel in the shape-controlling region;
- and temperature-controlling each of the temperature shape-controlling zones independently with a temperature controller.
A toner production apparatus comprising:
- a shape controller which controls a shape of toner particles;
- a shape-controlling region provided on the shape controller to control the shape of toner particles in a water based medium;
- a toner channel for the toner particles which is provided in the shape-controlling region;
- and
- a temperature controller for independently controlling at least two temperature shape-controlling zones in the shape-controlling region each of the temperature shape-controlling zones positioned serially along the flow direction of the toner channel in the shape controlling region.
2 more elements
Dependencies are inferred from the claim text.