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公开(公告)号：US5298389A
公开(公告)日：1994-03-29
申请号：US952936
申请日：1992-09-29
CPC分类号： G03C1/005
摘要： The present invention is a method to add dry gelatin to a photographic emulsion in either a liquid or a solid form. The dry gelatin is added by entraining the dry gelatin in air to form a gaseous mixture of dry gelatin in air and directing this mixture into the solid or liquid photographic emulsion. An air eductor is used to deliver the dry gelatin. When adding dry gelatin to a solution, the rate is determined by the solution viscosity and volume. When adding the dry gelatin to a solid emulsion, the dry gelatin rate is not as critical but uniform addition is still needed to interdisperse the dry gel with the emulsion pellets.
摘要翻译： 本发明是将干明胶添加到液体或固体形式的照相乳剂中的方法。 通过将空气中干燥的明胶夹带在空气中形成干燥明胶的气体混合物并将该混合物引入固体或液体照相乳剂中来加入干明胶。 使用空气喷射器输送干明胶。 当向溶液中加入干明胶时，速率由溶液的粘度和体积决定。 当将干明胶加入到固体乳液中时，干明胶速率不是至关重要的，但仍然需要均匀的添加以使干凝胶与乳液颗粒分散。
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公开(公告)号：US5277691A
公开(公告)日：1994-01-11
申请号：US972947
申请日：1992-11-06
CPC分类号： B04B11/082 , B01D19/0052 , B04B11/02 , B04B15/08 , Y10S494/90
摘要： A process for degassing a continuously flowing liquid stream is executed using an apparatus that comprises an air-tight housing, in which is mounted for rotation a centrifuge bowl of circular cross-section and having an inner surface for spreading centrifugally impelled liquid to be degassed and an annular peripheral trough for retaining centrifugally impelled degassed liquid. The liquid stream is fed into the bowl and the degassed liquid is withdrawn through a tube extending from an exit line outside the housing to an open end of elongate cross-section which is positioned within the trough of the bowl and is immersible in the degassed liquid. The pressure of the exiting degassed liquid is measured, the pressure measurement being used to regulate the flow of liquid into the bowl so as to maintain a substantially constant level of the liquid therein. Gas is withdrawn to maintain a sub-atmospheric pressure within the apparatus housing, and the flow of the degassed liquid stream is regulated so that the liquid level in the bowl remains substantially constant.
摘要翻译： 使用包括气密壳体的装置执行用于对连续流动的液体流进行脱气的方法，所述装置安装成用于旋转圆形横截面的离心碗，并具有用于扩散待离心的被驱除的待排气的液体的内表面， 用于保持离心推进的脱气液体的环形外围槽。 液体流被送入碗中，并且脱气的液体通过从壳体外部的出口线延伸到细长横截面的开口端的管子，该开口端定位在碗的槽内并且浸没在脱气液体 。 测量排出的脱气液体的压力，使用压力测量来调节液体进入碗中的流动，以保持其中液体基本上恒定的水平。 取出气体以在装置壳体内保持低于大气压的压力，并且调节脱气的液体流的流动，使得碗中的液面保持基本恒定。
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公开(公告)号：US5190515A
公开(公告)日：1993-03-02
申请号：US820449
申请日：1992-01-13
CPC分类号： B04B11/082 , B01D19/0052 , B04B11/02 , B04B15/08 , Y10S494/90
摘要： An apparatus for degassing a continuously flowing liquid stream comprising an air-tight housing, in which is mounted for rotation a centrifuge bowl of circular cross-section and having an inner surface for spreading centrifugally impelled liquid to be degassed and an annular peripheral trough for retaining centrifugally impelled degassed liquid. The liquid stream is fed into the bowl and the degassed liquid is withdrawn through a tube extending from an exit line outside the housing to an open end of elongate cross-section which is positioned within the trough of the bowl and is immersible in the degassed liquid. The apparatus further provides for measuring the pressure of the exiting degassed liquid, the pressure measurement being used to regulate the flow of liquid into the bowl so as to maintain a substantially constant level of liquid therein. The apparatus also provides for the withdrawal of gas to maintain a sub-atmospheric pressure within the apparatus housing, and for the regulation of the flow of the degassed liquid stream.
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公开(公告)号：US5269836A
公开(公告)日：1993-12-14
申请号：US937636
申请日：1992-08-28
CPC分类号： B01D19/0031 , B01D19/0078
摘要： The present invention describes a passive membrane degasser device in which solid chunks of photographic materials (15) are pumped past a hydrophobic membrane (10). Air from in between the chunks is forced through the membrane by pump pressure including a screw auger (11) and a vacuum (12) on the outer side of the membrane. The solid chunks of photographic material (15) are then transferred to a liquefier where conventional ultrasonic deaeration is performed. This device causes no sensitometric problems and permits using a continuous liquefaction system without the use of a centrifugal vacuum degasser.
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5.发明授权
公开(公告)号：US5191910A
公开(公告)日：1993-03-09
申请号：US613422
申请日：1990-11-14
IPC分类号： G03C1/025
CPC分类号： G03C1/025 , G03C2200/09 , G03C2200/60 , Y10T137/0324 , Y10T137/6606 , Y10T137/86083
摘要： A method and apparatus for continuously liquefying a gelled photographic material for coating on a substrate is disclosed. The material is advanced throughout the liquefaction apparatus and on to the substrate coating system as a substantially undisrupted mass. The technique is particularly useful for liquefying small amounts of material at a time, because system hold-up volume and waste is minimized.
摘要翻译： 公开了一种用于连续液化用于涂覆在基底上的胶凝照相材料的方法和装置。 该材料在整个液化装置中并且以基本上未破坏的质量进入基底涂层系统。 该技术对于一次液化少量材料特别有用，因为系统保持体积和废物被最小化。
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