Abstract: An air filtration system for refrigerated compartments. In one embodiment, the refrigerated compartment of the invention includes a plurality of walls defining the refrigerated compartment, an air inlet passage and an air outlet passage extending through at least one of the walls, a plenum chamber positioned outside of said refrigerated compartment having an air inlet port and an air outlet port wherein the air inlet port and air outlet port are respectively fluidly coupled to the air inlet passage and said air outlet passage, a fan to produce airflow between the air inlet port and the air outlet port, and an air filter assembly disposed within the plenum. The air filtration system of the invention can be utilized in a refrigerated commercial transport vehicle.

Abstract: An air filtration device for intake of atmospheric air, removal of contaminants from the atmospheric air, expulsion of filtered air, includes a housing configured for application directly to an electrical outlet and provides air intake from the front surface of the housing and air expulsion from the side of the housing to utilize a wall surface to disperse the filtered air. An indicator is provided to communicate that a filter should be changed, and a filter orientation system is provided to allow proper orientation of the filter with respect to air flow.

Abstract: A blower apparatus for a vehicle for blowing air into a cabin. The blower apparatus including a case member, various units and airflow passages. The units include an air cleaning unit for cleaning the air, and a component-adding unit for adding air components such as ions to the air. The units have compatible external shapes and sizes for selective installation in almost the same positions in the airflow passages, thereby meeting user needs of changing the function of the blower apparatus simply by arranging the units to the desired positions.

Abstract: An air filter capable of visual indication of a clogged condition thereof includes a housing, a filter unit, a fan unit and a signaling device. The housing has an air inlet, an air outlet, and an air passage extending from the air inlet to the air outlet. The signaling device includes a flap disposed to span the air passage, a horizontal pivot pin connected securely to the flap and pivotable relative to the housing, and a pointer connected to one end of the pivot pin and rotatable with the pivot pin relative to the housing. A reduction in air flow through the air passage attributed to a clogged condition of the air filter causes the flap to pivot and move the pointer relative to the housing so as to indicate the clogged condition of the air filter.

Abstract: An air filtration device for intake of atmospheric air, removal of contaminants from the atmospheric air, expulsion of filtered air, includes a housing configured for application directly to an electrical outlet and provides air intake from the front surface of the housing and air expulsion from the side of the housing to utilize a wall surface to disperse the filtered air. An indicator is provided to communicate that a filter should be changed, and a filter orientation system is provided to allow proper orientation of the filter with respect to air flow.

Abstract: The invention relates to a filter ventilator that can be installed within an aperture in a wall, in particular the wall of a switch cabinet, circuit box, device housing or the like. The filter ventilator includes at least one ventilator motor (16, 50) with fan blades and a filter (14), which is positioned ahead of the ventilator motor (16) in the airstream. In accordance with the invention a build-in frame (10) with attachment means (24) and an insertion frame (12) are provided. The build-in frame (10) can be permanently fixed within the aperture. The insertion frame (12) is removably inserted into the build-in frame (10), the ventilator motor (16) is releasably connected to the insertion frame (12) and the filter (14) is removably set into the insertion frame (12). In addition, an exhaust filter is provided, which is constructed like the filter ventilator but includes no ventilator motor (16).

Abstract: A personal tabletop-type air cleaner is provided which is user-friendly and can improve smoke sucking efficiency in a simple configuration. The disclosed personal tabletop-type air cleaner has a front opening portion to suck air containing smoke of a cigarette, a blower to forcedly feed air having been sucked into the front opening portions in a centrifugal manner, a pair of right and left peripheral opening portions each being placed in a fringe portion on the right and the left at a front of the air cleaner and forming an air curtain by emitting air fed forcedly from the blower ahead of the front of the air cleaner, a dust collecting filter being placed between the front opening portion and the blower to remove cigarette odor, and a deodorizing filter being placed between the blower and each peripheral opening portion making up the pair of right and left peripheral opening portions to remove cigarette odor.

Abstract: An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the air outlet. A filter assembly is positioned within the housing between the air inlet and the fan. The filter assembly includes a frame and a filter element mounted to the frame. The device also includes a hanger and an elongate hanger support that removably extends within the hanger. Either the hanger or the elongate hanger support is coupled to the frame while the other is coupled to the housing. The hanger can include a channel or a pair of opposed legs configured to form a gap.

Abstract: A fume extraction and filter apparatus includes a housing including a base and a top portion connected to a top side of the base. The base includes an inlet in a side thereof, the inlet leading into the housing and being in flow communication with an outlet in the top portion. A motor is disposed in the housing. A blower assembly is disposed in the housing and drivable by the motor to draw air into the inlet and cause the air to exit through the outlet. A filter is disposed in the housing between the inlet and the outlet and is arranged to filter air drawn in the inlet before the air exits through the outlet.

Abstract: An air purifier has a housing, a motor, a fan, a filtering net, and a power plug. The motor and the fan are positioned in the housing. The filtering net is joined to the front of the housing. The power plug includes a rotatable member and a pair of conductive members; the conductive members have ring-shaped portions concentrically arranged in a chamber of the housing, and are electrically connected to the motor; the rotatable member is rotatably received in the chamber, and has a pair of copper strips, which stick out at outer ends for connection with a power socket, and which constantly touch a respective one of the concentric ring-shaped portions from inner ends in the rotation of the rotatable member for adjustment of the position of the air purifier.

Abstract: A filter unit for a motor vehicle which combines an intake air filter for an internal combustion engine and an interior ventilation air filter for a passenger compartment in a single unit. Filter housings for the respective filters may be joined to each other by a releasable connection, such as a combination of attachment hooks and screw fasteners, or they may be formed integrally with each other in one piece.

Abstract: A filter system for a free-standing air blowing fan having a support stand, motor driven fan blades and a cage about at least portions of the blades, is described. The filter system comprises a filter support hub defined by a solid circumferential wall. The filter support hub is secured about or forms part of the cage. The hub is also provided with filter retention attachments rearwardly thereof for removable securement of a flat annular disc-shaped air filter behind the fan blades and cage. The filter support hub has a projecting air shield front edge projecting forwardly of a central planar axis of the fan blades of the fan to prevent ingress air flow from a front opened end of the filter support hub when the fan is operating. All the ambient air is accordingly drawn from the back through the filter.

Abstract: A portable air cleaner designed to remove particles and unwanted gases from a room to provide for a healthier and cleaner environment. The portable air cleaner includes a high air volume circulating design and operates quietly and efficiently. The air exhaust of the air cleaner includes a plurality of arcuate vanes radiating outwardly from the interior of the air cleaner. The vanes are disposed in a non-symmetrical arrangement the air exhaust to reduce pressure drop and to minimize operation noise.

Abstract: A portable room air cleaner including a frame; at least one motor connected to the frame; at least two rotatable axial flow fans connected to the at least one motor; and a filter connected to the frame. The fans are rotated by the motor to additively build static air pressure in series for entry of the air into the filter.

Abstract: A portable, light-weight exhaust fan that can be easily and quickly carried to and set up in a localized area to safely, efficiently and substantially remove airborne materials thereby overcoming the above and other drawbacks of conventional exhaust fans. Exhaust fans in accordance with aspects of the present invention may be used to ventilate a localized area such as an enclosed room and may be placed in any aperture such as a window or doorway to remove airborne material from the air passing therethrough, and to exhaust filtered air directly or indirectly to the surrounding environment. The exhaust fan can be constructed such that air traveling along an exhaust path through the fan is prevented from contacting components of the fan that can be damaged by exposure to the airborne materials. This enables the exhaust fan to efficiently remove airborne materials from a localized area while preventing the same materials from adversely affecting the operation of the fan.

Abstract: An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the air outlet. A filter assembly is positioned within the housing between the air inlet and the fan. The filter assembly includes a frame and a filter element mounted to the frame. The device also includes a hanger and an elongate hanger support that removably extends within the hanger. Either the hanger or the elongate hanger support is coupled to the frame while the other is coupled to the housing. The hanger can include a channel or a pair of opposed legs configured to form a gap.

Abstract: An air treatment apparatus has a housing and a vent cover. The housing has a treatment element, at least one entrance and a fan secured in the hollow housing and facing the entrance. The vent cover is detachably and replaceably attached to the housing. At least one vent is selectively defined in one of the top face and the front face of the vent cover. With such an air treatment apparatus, the vent cover can be interchanged between a jet-flow one or a laminar-flow one.

Abstract: An air purifier has a rotatable power plug capable to be inserted directly into a common socket and to be turned around to suit to different directions and positions of various sockets to increase facility in use. Besides, the body of the air purifier is provided with a bulb inside and a bulb switch on an upper side to turn on or turn off the bulb, thus also serving as a lamp lighting at night.

Abstract: A flow system includes an air mover operable to cause the flow. A first stage, such as a coarse filter, is disposed upstream of the air mover and operates on the flow. A second stage, such as an adsorbent cell or muffler, is disposed downstream of the air mover and further operates on the flow. Other stages, such as a fine filter, may be disposed between the first and second stages.

Abstract: An air filtration device for intake of atmospheric air, removal of contaminants from the atmospheric air, expulsion of filtered air, includes a housing configured for application directly to an electrical outlet and provides air intake from the front surface of the housing and air expulsion from the side of the housing to utilize a wall surface to disperse the filtered air. An indicator is provided to communicate that a filter should be changed, and a filter orientation system is provided to allow proper orientation of the filter with respect to air flow.

Abstract: One or two filters in brackets are integrated with a square or circular fan. Filters and associated brackets are provided both in the front and in the rear of the fan in one embodiment. In another embodiment, a single filter in a bracket is provided at the rear of the fan. The filter(s) can be pre-pleated and pre-activated carbon filter(s). The fan housing can include a pocket for adding an odorizing and/or deodorizing agent. A plurality of stick-on right-angled brackets having the capacity of adjustable clearance to snugly hold the filters is another embodiment.

Abstract: A cleanbox that can prevent contamination from not only external sources but also from within the cleanbox from such sources as substrates and internal components of the cleanbox, includes a casing container (18) formed by a container main body (12) and a lid member (14) for hermetically sealing a top opening section of the container main body; a dividing wall (20) for forming circulation paths having an upstreaming path and a downstreaming paths within the casing container; a substrate holding section (24) disposed in the upstreaming path for holding broad surfaces of substrates (W) approximately parallel to the upstreaming path; an air filter (26) and a gas removal filter (28) disposed upstream in relation to the substrate holding section in the upstreaming path; and a motor-driven fan (30) housed in the casing container for producing air streams circulating in the circulating paths.

Abstract: A ceiling fan having a rotatable plate. A filtering media is disposed proximate the peripheral edge of plate and rotatable therewith. A number of curved fan blades are coupled with and extend from the plate, and are disposed annularly to define a central opening so that air is pulled toward the blades and through the filter media. In another embodiment, a ceiling fan has a circular plate with a number of fan blades attached to the plate and arranged in a ring shape. The circular plate has a number of spacers that are coupled with a lower ring. At least one section of filter media is located between the plate and the ring. Also, at least one door is coupled with the plate and is located at the peripheral edges of the plate and ring to cover at least a section of the filter media.

Abstract: An air filtration device for intake of atmospheric air, removal of contaminants from the atmospheric air, expulsion of filtered air, includes a housing configured for application directly to an electrical outlet and provides air intake from the front surface of the housing and air expulsion from the side of the housing to utilize a wall surface to disperse the filtered air. A filter change indicator is provided to communicate that a filter should be changed, and a filter orientation system is provided to allow proper orientation of the filter with respect to air flow.

Abstract: An air purifier including a housing supporting an air inlet, an air outlet and an air flow passage interconnecting the air inlet and the air outlet. The airflow passage is defined by a filtration chamber positioned upstream from a blower chamber and an ultraviolet light chamber. A blower assembly is supported within the blower chamber and includes a fan driven by a motor for forcing air through the air flow passage from the air inlet to the air outlet. A pre-filter and a main filter are removably supported within the air filtration chamber for entrapping particulates having a size of 0.3 microns and greater. An ultraviolet light source is positioned within the light chamber and is positioned proximate the air outlet. An outlet grille is supported proximate the air outlet and provides for the passage of air while substantially preventing the passage of ultraviolet light. The outlet grille includes a louver assembly including a plurality of blades defining a plurality of convoluted passages.

Abstract: The present invention relates to air filtering devices for removing malodor and ethylene from the air. Such devices are useful for example for storing and preserving fluid in closed compartments such as refrigerators. The air filtering device of the present invention is characterized in that a first filtering member is capable of removing malodors from the air and a second filtering members capable of removing ethylene from the air.

Abstract: A smoke exhauster includes a housing having a front opening and a rear orifice, for receiving two filter devices respectively. One or more fan devices are disposed in the housing for generating air to flow through filter devices, and a device may be used for selectively guiding the air to flow through either of the filter devices and includes one or more stop panels secured to the housing for blocking the air passages to the filter devices or includes a cover engaged onto the orifice of the housing for blocking the orifice of the housing.

Abstract: A dustproof structure for a communication device is disclosed, in which the whole area of the air filter can be effectively used, the dust collecting efficiency can be improved at low cost, and an increase in the pressure loss can be prevented. The air filter comprises a first air filter section and a second air filter section, wherein the first air filter section is provided at an area closer to the fan, within which the air flow is concentrated, and the second air filter section is provided at another area farther from the fan, and the first air filter section has a dust collecting efficiency higher than that of the second air filter section, while the second air filter section has a pressure loss lower than that of the first air filter section.

Abstract: A dustproof structure for a communication device is disclosed, in which the whole area of the air filter can be effectively used, the dust collecting efficiency can be improved at low cost, and an increase in the pressure loss can be prevented. The air filter comprises a first air filter section and a second air filter section, wherein the first air filter section is provided at an area closer to the fan, within which the air flow is concentrated, and the second air filter section is provided at another area farther from the fan, and the first air filter section has a dust collecting efficiency higher than that of the second air filter section, while the second air filter section has a pressure loss lower than that of the first air filter section.

Abstract: An adapter for coupling an air duct having an air duct mating end to a fan-driven vent unit having an air intake opening. The air duct may be a circular cross sectional air duct, for example, and the vent unit may comprise a HEPA or other filter. The adapter has a first mating section compatible with the air duct mating end (e.g., circular) for coupling the adapter to the air duct mating end, and a second mating section for coupling the adapter to the air intake opening of the fan-driven vent unit. Side walls of the adapter, between or part of the first and second mating sections, have supply-relief holes for providing a supply of air to the air intake opening when the air duct provides no air supply (e.g., when it is closed off by a damper system).

Abstract: Dehumidifier housing including a lower housing having a barrier part fitted vertically between a compressor and a water tank inside of a cabinet, a drain part formed in a horizontal direction above the barrier part for collecting condensate dehumidified at a heat exchanger and draining the water tank, and sidewalls formed at both sides of the barrier part and the drain part in a front and rear direction and supported on an inside of the cabinet, an upper housing having an orifice part with an air flow hole in a central portion, and a rim part around the orifice part in front and rear direction and supported on an inside of the cabinet, and coupling means for coupling the lower housing and the upper housing, thereby enhancing rigidity and dehumidifying effect.

Abstract: An air treatment appliance having an external body with a movable portion and a main portion. An air inlet and an air outlet in the external body permit airflow through the device. A fan inside the body is operable to draw in air through the air inlet and to expel it through the air outlet, and the air may be passed through a filter mechanism in the device. An access mechanism permits convenient access to the filter mechanism and other components in the external body. The device is at least partially disabled when the movable portion is moved relative to the main portion.

Abstract: The present invention provides an air filtration device attachable to a motor. The device comprises a housing comprising an upper part and a lower part, wherein the upper and lower parts are parallel and spaced apart from each other and define a cavity therebetween, and wherein the lower part has a centrally positioned opening therein; an impeller positioned coaxially with the axis of the housing between the upper and lower parts thereof and attached to the motor; and a filter positioned between the upper and lower parts and positioned around a perimeter of the housing.

Abstract: An air filtration device for intake of atmospheric air, removal of contaminants from the atmospheric air, expulsion of filtered air, includes a housing configured for application directly to an electrical outlet and provides air intake from the front surface of the housing and air expulsion from the side of the housing to utilize a wall surface to disperse the filtered air. An indicator is provided to communicate that a filter should be changed, and a filter orientation system is provided to allow proper orientation of the filter with respect to air flow.

Abstract: The invention relates to a portable air sterilization and filtration apparatus for removing contaminants from the ambient atmosphere, having a housing with an inlet opening and an outlet opening, filter media and ultraviolet light source, and a motorized fan for maintaining a flow of air through the housing from the inlet opening to the outlet opening. The invention also includes easy access to the filter medium and to the ultraviolet light sources for periodic replacement or cleaning, and integrates a safety lock feature whereby the removal of the filter or the removal of an ultraviolet light source would open the power circuit to the ultraviolet light source, preventing accidental irradiation of the user. The ultraviolet light sources also activate an indicator light viewable by the user when the ultraviolet light sources are energized.

Abstract: An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the air outlet. A filter assembly is positioned within the housing between the air inlet and the fan. The filter assembly includes a frame and a filter element mounted to the frame. The device has a removable coupler having first and second hangers. A first elongate hanger support is coupled to the housing and removably extends within the first hanger and a second elongate hanger support is coupled to the frame and removably extends within the second hanger.

Abstract: A device case is constructed to include a front frame, a face panel, a metal wire gauze filter mounted in an air input port in the face panel, an air output port disposed at a back side, an induced-draft fan mounted in a front frame behind the face panel and adapted to draw outside air through the air input port and the air output port, an ultraviolet lamp installed in the front frame above the induced-draft fan, and a layer of titanium dioxide photocatalyst coated on the face panel, said frame, the wire gauze filter, and an inside wall of the computer case within the radiation of ultraviolet light from the ultraviolet lamp.

Abstract: An air filtration device for intake of atmospheric air, removal of contaminants from the atmospheric air, expulsion of filtered air, includes a housing configured for application directly to an electrical outlet and provides air intake from the front surface of the housing and air expulsion from the side of the housing to utilize a wall surface to disperse the filtered air. An indicator is provided to communicate that a filter should be changed, and a filter orientation system is provided to allow proper orientation of the filter with respect to air flow.

Abstract: An air treatment appliance having an external body at least partially constructed of a translucent material. An air inlet and an air outlet in the external body permit airflow through the device. A fan inside the body is operable to draw in air through the air inlet and to expel it through the air outlet and the air may be passed through a filter mechanism in the device. At least some components of the interior of the air treatment appliance having a condition capable of visibly changing during an operation of the appliance, such as the filter mechanism and the fan, are visible from the exterior through the translucent material of the external body such that the condition is visible from the exterior of the external body through the translucent material. The translucent material may be clear, colored, or a predetermined combination of colors.

Abstract: A portable, light-weight exhaust fan that can be easily and quickly carried to and set up in a localized area to safely, efficiently and substantially remove airborne materials thereby overcoming the above and other drawbacks of conventional exhaust fans. Exhaust fans in accordance with aspects of the present invention may be used to ventilate a localized area such as an enclosed room and may be placed in any aperture such as a window or doorway to remove substantially all airborne material from the air passing therethrough, and to exhaust filtered air directly or indirectly to the surrounding environment. An exhaust fan constructed such that air traveling along an exhaust path through the fan is prevented from contacting components of the fan that can be damaged by exposure to the airborne materials. This enables the exhaust fan to efficiently remove airborne materials from a localized area while preventing the same materials from adversely affecting the operation of the fan.

Abstract: An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the air outlet. A filter assembly is positioned within the housing between the air inlet and the fan. The filter assembly includes a frame and a filter element mounted to the frame. The device also includes a hanger and an elongate hanger support that removably extends within the hanger. Either the hanger or the elongate hanger support is coupled to the frame while the other is coupled to the housing. The hanger can include a channel or a pair of opposed legs configured to form a gap.

Abstract: In an air conditioner, filter deformation strings are disposed on an outer surface side of a bent portion of a filter, so that the bent portion of the filter is crushed when a predetermined tension is applied to the strings. When the strings are drawn, the bent portion of the filter is deformed to a plate like, and the filter can be readily removed from a casing through a filter-removable port of the casing. On the other hand, when the filter is attached into the casing, the deformed plate-like filter is inserted into the casing from the filter-removable port while drawing the strings, and thereafter, the strings are loosened so that the shape of the filter returns to an original shape.

Abstract: A dustproof structure for a communication device is disclosed, in which the whole area of the air filter can be effectively used, the dust collecting efficiency can be improved at low cost, and an increase in the pressure loss can be prevented. The air filter comprises a first air filter section and a second air filter section, wherein the first air filter section is provided at an area closer to the fan, within which the air flow is concentrated, and the second air filter section is provided at another area farther from the fan, and the first air filter section has a dust collecting efficiency higher than that of the second air filter section, while the second air filter section has a pressure loss lower than that of the first air filter section.

Abstract: An air treatment appliance for treating surrounding air, comprising a body. A spider-mount mounted to the body has a motor mounted thereto in cantilever fashion. A fan attached to the motor may be a radial fan, and is operable to draw in surrounding air and cause it to flow through the appliance. A grommet between the motor and the spider-mount dampens vibrations from the motor. A filtering mechanism in the path of the airflow helps filter out undesirable material from the surrounding air. A radial airflow guide downstream from the fan efficiently guides the airflow to be expelled in a predetermined direction. The motor is at least partially accommodated by the spider-mount and the fan. The apparatus results in reduced noise and vibration during operation of the appliance.

Abstract: An air treatment device is adapted to be mounted on and directly supported by an electrical socket. A treatment medium, such as a replaceable electrostatic filter or a replaceable absorber/adsorber, is located at the front of the device. A fan draws air through the medium and particles with a particle size above 0.1 &mgr;m are removed.

Abstract: An air treatment appliance having an external body with a movable portion and a main portion. An air inlet and an air outlet in the external body permit airflow through the device. A fan inside the body is operable to draw in air through the air inlet and to expel it through the air outlet, and the air may be passed through a filter mechanism in the device. An access mechanism permits convenient access to the filter mechanism and other components in the external body. The device is at least partially disabled when the movable portion is moved relative to the main portion.

Abstract: An air filtering device including a circular plate, plurality of fan blades fixedly attached to the circular plate, the fan blades extending downwardly from the lower surface of the circular plate; a filter frame having an air permeable cylindrical inner wall, having an upper wall, having a lower wall, and having an air permeable cylindrical outer wall, the air permeable cylindrical inner wall, the air permeable cylindrical outer wall, the upper wall and the lower wall defining a cylindrical filtering media containing space; air filtering media extending annularly around the air permeable cylindrical inner wall within the cylindrical filtering media containing space; and, filter frame attaching means attaching the filter frame so that it extends annularly around the outer edges of the fan blades.

Abstract: An air treatment appliance having an external body at least partially constructed of a translucent material. An air inlet and an air outlet in the external body permit airflow through the device. A fan inside the body is operable to draw in air through the air inlet and to expel it through the air outlet and the air may be passed through a filter mechanism in the device. At least some components of the interior of the air treatment appliance having a condition capable of visibly changing during an operation of the appliance, such as the filter mechanism and the fan, are visible from the exterior through the translucent material of the external body such that the condition is visible from the exterior of the external body through the translucent material. The translucent material may be clear, colored, or a predetermined combination of colors.

Abstract: An air filtering device removably attaches to the back or inlet side of the wire guard of a conventional portable desktop electric fan or the like, for filtering foreign matter from the ambient air in a room in which the fan is operating. The filter device comprises a filter element and solid shroud, with the shroud capturing the filter element between the back of the fan guard and the inner surface of the shroud. The filter element has a generally toroidal, tire-like shape, with the open inner annulus area providing access to the inner volume of the filter. The shroud is shaped similarly to the filter, but has only a single wall configured to fit about the back or inlet side of the fan guard. The shroud has an outer rim including attachments for securing the shroud to the outer periphery of the fan guard, and an inner annulus having a lip extending therefrom for securing one annulus of the filter thereto.

Abstract: A filtration system, includes a filtration unit and processor. The filtration unit operates to filter ablative particles generated by thermal imaging of media and transmits a signal corresponding to a parameter, such as a pressure or pressure differential, representing a current state of the operation of the filtration unit, such as the state of the filters, during the filtering of the ablative particles. The processor receives the transmitted signals and generates, responsive to the receipt of the transmitted signal, a signal representing operator information associated with the current state operation, such as a warning or instructions for correcting a deficiency, and/or a signal to stop the imaging of the media.