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US 5,192,130 AGranted
Method for producing an emulsion and an apparatus therefor
AssigneeKonica Corporation
InventorsKiyoshi Endo, Masami Ishikura
Life of this patent
Estimating the term…
Abstract
A process of making emulsion for photographic material being prevented from coarse oil globules mixed-in which causes visible spots on the final products is disclosed. Before mixing and emulsifying oil phase and water phase in an emulsifying tank, said two phases are pre-mixed air-tightly in an in-line-mixer to minimize the above mentioned trouble.
Claims11
A process of making an emulsion for photographic material, comprising;
- preparing a water phase solution in a first tank,
- preparing an oil phase solution in a second tank,
- premixing the water phase solution and the oil phase solution with an in-line mixer,
- emulsifying said pre-mixed the water phase solution and the oil phase solution in an emulsification tank, said first tank being air-tightly connected to an inlet of the in-line mixer and the second tank being air-tightly connected to the inlet of the in-line mixer, and
- an outlet of the in-line mixer being connected to the emulsification tank.
2 more elements
An apparatus for making an emulsion for photographic material comprising:
- a first tank to prepare a water phase solution to be delivered by a first force-feed-system at a first predetermined flow rate,
- a second tank to prepare an oil phase solution to be delivered by a second force-feed-system at a second predetermined flow rate, and wherein the second predetermined flow rate divided by the first predetermined flow rate is not more than 1.20 and not less than 0.10,
- an in-line mixer to premix the water phase solution and the oil phase solution,
- an emulsification tank to emulsify said premixed water phase solution and oil phase solution,
- wherein the first tank is air-tightly connected to an inlet of the in-line mixer and the second tank is air-tightly connected to the inlet of the in-line mixer, and
- an outlet of the in-line mixer is connected to the emulsification tank to emulsify said premixed solutions.
3 more elements
An apparatus for making an emulsion for photographic material comprising:
- a first tank to prepare a water phase solution to be delivered by a first force-feed-system at a first predetermined flow rate,
- a second tank to prepare an oil phase solution to be delivered by a second force-feed-system at a second predetermined flow rate, and wherein the second predetermined flow rate divided by the first predetermined flow rate is not more than 1.0 and not less than 0.3,
- an in-line mixer to premix the water phase solution and the oil phase solution,
- an emulsification tank to emulsify said premixed water phase solution and oil phase solution,
- wherein the first tank is air-tightly connected to an inlet of the in-line mixer and the second tank is air-tightly connected to the inlet of the in-line mixer, and
- an outlet of the in-line mixer is connected to the emulsification tank to emulsify said premixed solutions.
3 more elements
Apparatus for making an emulsion for photographic material comprising:
- a first tank to prepare a water phase solution;
- a second tank to prepare an oil phase solution;
- an in-line mixer to premix the water phase solution and the oil phase solution;
- delivery means for regulating delivery of the water phase solution at a first predetermined flow rate and for regulating delivery of the oil phase solution at a second predetermined flow rate, wherein the second predetermined flow rate divided by the first predetermined flow rate is not more than 1.20 and not less than 0.10;
- and
- an emulsification tank to emulsify the premixed water phase solution and the oil phase solution, wherein the first tank is air-tightly connected to an inlet of the in-line mixer and the second tank is air-tightly connected to the inlet of the in-line mixer, and an outlet of the in-line mixer is connected to the emulsification tank to emulsify the premixed solutions.
3 more elements
Dependencies are inferred from the claim text.