摘要:
Apparatus for drying a web comprises a pair of spaced parallel plates defining a channel there between of predetermined thickness and length for receiving the web. The plates are provided with juxtaposed elongated openings respectively for injecting drying air into the channel on opposite sides of the web. Air under pressure is supplied to the openings to establish a high velocity laminar flow of air from the openings in opposite directions along the surface of the web. Air is evacuated from the channel on opposite sides of the web at a predetermined distance from said openings to maintain the heat transfer rate in the air higher than the heat transfer rate in the web.
摘要:
Apparatus for drying webs of light sensitive material comprises means defining a channel for receiving a web, a plurality of elongated spaced injection slits for applying drying fluid to opposite sides of the web, and a plurality of elongated spaced evacuation slits for evacuating drying fluid from opposite sides of the web. The injection and evacuation slits are substantially parallel and angularly oriented relative to the longitudinal axis of the web.
摘要:
A processor for processing photosensitive material having a first processing tank containing a first processing fluid containing at least one component of a first concentration and a second processing tank containing processing fluid having the same component to that of the first processing fluid, however, the concentration of the component being different than the first concentration. A weir is provided for causing fluid to flow from the first tank to the second tank resulting from the hydrostatic pressure of the first fluid in the first tank. The weir has a configuration such that concentration difference between processing fluid in said tanks does not change significantly over a predetermined period of time.
摘要:
Apparatus for treating a web with treatment fluid comprises a two part housing defining a recess for receiving the web and a fluid distribution system for supplying treatment fluid to the recess. The fluid distribution system comprises a series of passages connected in a whiffletree configuration for dividing and subdividing the treatment fluid to supply treatment fluid to the recess at a plurality of locations across the recess to uniformly treat the web with the treatment fluid. In another embodiment the processor comprises a pair of plates defining a recess for receiving a web. The plates have at least one pair of elongated liquid injection openings extending transversely of the recess on opposite sides of the web respectively in juxtaposed relationship for injecting liquid into the recess. The plates further include at least one pair of elongated evacuation openings extending transversely of the recess on opposite sides of the web respectively in juxtaposed relationship for evacuating liquid from the recess. A whiffletree liquid distribution system is associated with each of the openings to supply liquid to the injection openings and to evacuate liquid from the evacuation openings.
摘要:
A combination is provided of a reaction vessel and apparatus for processing it. Preferably, the latter features a temperature control device comprising two surfaces to contact a reaction vessel sandwiched between them, a heater element being disposed on one side of one of the surfaces, a cavity being provided at the heater element, and pressure means for delivering cooling gas to the cavity and the heater element and for removing the air after it has cooled the heater element. Most preferably, there is further included means for providing relative movement between the control device and a reaction vessel so sandwiched between the two surfaces.
摘要:
An improved thru-wall structure useful for apparatus for processing photosensitive material for separating adjacent chambers filled with processing fluids. The wall structure having first and second wall portions and a pair of sidewall portions which define a passage opening. A pair of parallel contacting rollers are placed into the opening. The rollers have a compliant sublayer which elastically deforms in an radial direction and a outer layer made from a material having a low coefficient of friction to allow the rollers to be easily rotatably driven and providing a fluid seal between the rollers. The rollers are placed within the sidewalls by engaging the roller ends into an opening provided in each sidewall which is slightly smaller than the diameter of the combined rollers so as to provide a tight liquid seal at the roller end-sidewall interface.
摘要:
An apparatus for transferring a test liquid between chambers of a chemical reaction pack. The apparatus includes a series of actuation modules arranged in adjacent relationship to each other to define chemical reaction pack receiving stations therebetween. Each actuation module includes pressure applicators for applying external pressure to the chambers of the reaction pack and temperature control elements for heating and cooling the test liquid within the chemical reaction pack.
摘要:
A processor for light sensitive material includes a processing device which is immersed in processing liquid in a processing chamber and defines a processing channel through which a web is transported by transport rollers for contact with a treatment liquid. Liquid is injected into the channel at one or more injection sites and evacuated from the channel at one or more evacuation sites. A pump which is totally immersed in the liquid circulates liquid from within the chamber to the evacuation sites and through the processing channel to the evacuation sites.In one embodiment of the pump comprises an elongated cylindrical element having a plurality of peripheral blades and positioned in close proximity to manifold elements which define high pressure zones adjacent the injection sites. In another embodiment the pump comprises an elongated gear pump.The processor may include a plurality of such chambers and a plurality of such processing devices and pumps. Transport rollers between adjacent chambers serve to transport the web from chamber to chamber through the processor. Each set of transport rollers and the drive gears therefore is supported in a removable module. Similarly each processing device and the associated pump and drive gears for the pump are supported in a removable module. Indexing surfaces define the operative positions of the modules. Central drive shafts having a plurality of gears drive the gear drives of the modules when the modules are in their operative positions.
摘要:
An apparatus for transporting exposed radiation sensitive film strips (102) through process liquids (38) for development includes an essentially vertical, porous serpentine wall (18) formed in oppositely opening loops (32, 34), alternate ones of which partially surround hollow porous partial cylinders (42), thus defining a sinuous path along which a transport web (70) is driven while carrying film strips which are supported treated by process liquids flowing through the porous wall and partial cylinders.
摘要:
An improved test device, useful in conducting reactions, which comprises (a) a well lconfigured to confine temporarily a liquid patient sample admixed with at least one reagent, such as an immunoreagent, to conduct such a reaction, (b) a filter at the bottom of the well with pores effective to pass free, unreacted reagent but not reacted or complexed reagent, and (c) an absorbent material underneath the filter effective to draw off liquid in the well after the reaction. The device further includes (d) a non-absorbent pad underneath the filter, adjacent to the absorbent material, and (e) means for moving the filter and the absorbent material relative to each other, and the filter and the pad relative to each other, between two positions, one in which the filter contacts the non-absorbent pad and the other in which the filter contacts the absorbent material.