| 摘要 |
PURPOSE:To ensure stable production of a photographic emulsion without adversely affecting its characteristics by using metallic Zr or its alloy for a part in contact with a reactant soln. in the device for preparing the emulsion. CONSTITUTION:At least a part of each member for constituting a reaction vessel in contact with a reactant soln. in made of metallic Zr or its alloy. This invention includes that all the members of the reaction device are made of Zr or its alloy, and also that a part of the members is made of them like the case in which the inner walls in contact with the reaction vessel are lined with them. It is recommended not to use stainless steel, such as SUS 304, for the part in contact with the reactant soln., thus permitting durability of the preparation device to be enhanced without adversely affecting photographic emulsion characteristics, and stable production of silver halide emulsion to be ensured. |
