Abstract: Carriers are disclosed for supporting a plurality of agricultural cores on a plurality of core supports for coating by a flexible film. The plurality of core supports may include a pedestal for supporting a respective agricultural core and a core periphery region having a plurality of bridge elements which couple the pedestal to the connecting structure between the plurality of core supports. The carriers may include a vacuum system that independently communicates a partial vacuum to an aperture in each respective pedestal and a plurality of apertures in the core periphery region of a respective core support between the bridge elements.

Abstract: A robotic lifting and orienting system for an overspray-free paint system includes: a base coupled to wheels; and an automated carrier coupled to the base. The automated carrier includes: a fixture assembly configured to hold an object to be painted; one or more manipulators configured to move the fixture assembly relative to a paint robot; a propulsion system connected to the wheels and configured to move the robotic lifting and orienting system; and a control module configured to control the one or more manipulators and the propulsion system to control positioning and orienting of the object relative to at least one of the paint robot and an overspray-free paint applicator of the paint robot.

Abstract: According to one embodiment, an imprint apparatus that presses a fine pattern of an original plate against a photo-curable resin dropped onto a substrate, and transfers the fine pattern to the photo-curable resin by applying light, includes a dropping unit that drops the photo-curable resin onto a shot region obtained by dividing the substrate into a plurality of sections, an original plate supporting unit that stamps the original plate on the photo-curable resin on the substrate, the original plate being supported the fine pattern towards the substrate side, and a substrate supporting unit that supports the substrate and moves the substrate such that a position of a predetermined shot region of the substrate is a dropping position of the dropping unit or a stamping position of the original plate, in which the dropping unit is controlled such that the photo-curable resin is sequentially dropped onto the plurality of shot regions of the substrate, and the original plate supporting unit is controlled such that

Abstract: The invention relates to a tool (1) for applying liquid agent such as, for example, an insulating foam, an adhesive, or paint to the mantle surface of a circular-cylindrical object (10), comprising a tool head (2) having an axially through hole (3) with a substantially circular cross-section. The tool head (2) comprises an inner flange (8), an outer flange (16), a distribution chamber (12) running around the inner flange (8) and that comprises at least one outlet (13; 23; 33) distributed around the through hole (3). An asymmetrical restriction is arranged at the outlet (13) so that the outlet is restricted where the pressure is as highest (14). The invention also relates to a method for applying an agent around a circular-cylindrical object (10) with the tool (1).

Abstract: A coating device for applying a coating agent to the surface of a workpiece. The coating device includes a frame with a workpiece receptacle, a coating agent source and a rotary unit which is rotatable in relation to the frame. The rotary unit has a pump and a plurality of spray units, with the pump on the suction side being connected to the coating agent source by a fluid-conducting rotary joint connection. The rotary unit has a pneumatic valve device, and the spray units have in each case one compressed air controlled valve for controlling the delivery of coating agent. The inlet side of the valve is connected to the compressed air source by a fluid-conducting rotary feedthrough, which simplifies the overall construction of the coating device by providing a pneumatic connection between the compressed air source and the rotary unit that is independent of the rotation angle.

Abstract: The invention relates to a device for, and method of, applying, drying and activating hot glue on the packaging machine itself. In the case of the basic option, the device works as follows: two assemblies (1) for applying and drying glue are positioned on the plates (3) of machine (M). Assemblies (1) are made up of consoles (11) mounted in a way that enables them to slide and move, their front end on the lever (32) and their rear end on the shaft (31) attached between two plates (3). The lever (32) is attached, by way of levers (33), between the plates (3). One device (12) for applying hot glue is attached to the consoles (11), just above the lever (32), while a number of fans (13) are fastened along the console (11), above the device (12), as well as on the opposite side. The heater (4) is horizontally attached to the carrier (42) and positioned in the opening (43) on the plate (41). The strip heater (7) is made up of an endless strip (71) and vertical heaters (72).

Abstract: A wall construction formed of solid wood members. The wall construction provides for a heating and cooling system that synergistically works with the inherent insulative properties of solid wood members. The wall construction comprises channels formed in the solid wood members to accommodate conduits for heating and cooling. The conduits are routed through multiple solid wood members of a wall and are positioned to efficiently heat and cool the interior of a building. Other grooves may be formed in the top side of the solid wood members to accommodate conduits for heating, cooling electrical service and communications carriers.

Abstract: The present invention provides an automaton (1) for treating a surface for treatment, the automaton comprising treatment means (10), e.g. an arm, having a movable end (12) configured to treat a surface, and an interface configured to indicate to the automaton the surface that is to be treated. The interface includes a screen (21) configured to display a representation of at least a portion of the surroundings in which the surface for treatment is to be found, and the interface is configured to enable a person to select the surface for treatment on the representation displayed on the screen (21).

Abstract: A machine for removing substrate material from a part produced by a 3-D printer. The machine includes a housing having a working chamber defined therein. A spray header is disposed along at least a portion of the perimeter of the working chamber. A pump is configured and arranged to convey a fluid at varying pressures through the spray header. The fluid contacts the part and then flows to the bottom of the working chamber to a fluid outlet.

Abstract: Apparatus and methods for processing a glass sheet can include a coating chamber including a dispensing port to dispense a coating on a major surface of the glass sheet. In some embodiments, an apparatus can include a fog chamber including an enclosure, a fog generator to provide fog to the enclosure, and a passage in the enclosure from which fog can exit the enclosure to contact a major surface of the glass sheet. In some embodiments a method can include providing a glass sheet to a coating chamber, and dispensing a coating on a major surface of the glass sheet. In some embodiments, a method can include providing a glass sheet to a fog chamber, providing fog to an enclosure of the fog chamber, and contacting a major surface of the glass sheet with the fog by passing the fog from the enclosure through a passage in the enclosure.

Abstract: A system for cleaning an automobile having at least two colored cleaning streams includes a first mixing system for combining a first cleaning composition stream, a first concentrated color composition, and a first water stream to form a first diluted colored cleaning composition. A second mixing system combines a second cleaning composition stream, a second concentrated color composition, and a second water stream to form a second diluted colored cleaning composition. A first foaming system receives the first diluted colored cleaning composition. The first foam system delivers the first diluted colored cleaning composition to the vehicle. A second foaming system receives the second diluted colored cleaning composition. The second foam system delivers the second diluted colored cleaning composition to the vehicle.

Abstract: A method of applying a coating to at least a portion of a surface of a structure using reusable master path rules. The surface of the structure is identified to form surface data. A framework for the surface of the structure is generated using the surface data. The framework comprises a plurality of points. Reusable master path rules are created for a master path connecting the plurality of points. The master path is a continuous line representing a universal route for applying coatings to the surface. The coating is applied to the at least a portion of the surface of the structure using the reusable master path rules.

Abstract: A substrate processing system includes a film-forming device to form photosensitive film on substrate, an exposure device to expose the film on the substrate, a relay device to transfer the substrate between the film-forming and exposure devices, a warping data acquisition device to acquire measured warping data of the substrate, a communication device to perform data communication with the exposure device, and a control device including film-forming, relay, measuring, and communication control sub-devices. The film-forming sub-device controls the film-forming device to form the film on the substrate, the relay sub-device controls the relay device to transfer the substrate to the exposure device, the measuring sub-device controls the warping data acquisition device to acquire the data after the controlling by the film-forming sub-device prior to the controlling by the relay sub-device, and the communication sub-device controls the communication device to transmit the data to the exposure device.

Abstract: A system for generating a path to be followed by a robot used to perform a process on a workpiece has a computing device that has program code for operating the robot and obtaining information related to the workpiece and a vision system that scans the workpiece to obtain images thereof that are provided to the computing device. The computing device processes the images to obtain geometric information about the workpiece that the computing device uses in combination with process related reference parameters stored in the computing device to generate program code for a path to be followed by the robot to perform the process on the workpiece. The computing device also includes code configured to verify for quality the generated program code for the path to be followed by the robot to perform the process on the workpiece.

Abstract: A fiber cutting device is disclosed having a cutting head with one or more blades disposed across a surface of the cutting head and disposed to rotate about a cutting head axis. An anvil roller is disposed and driven to rotate about an anvil axis and has a surface in momentary contact with each the one or more blades of the cutting head. Fibers are delivered to the device across a feeder. A feed control toggle may be moved to a stop position, where a first end of the feed control toggle presses the plurality of fibers against the feeder to stop motion of the fibers and prevent cutting. Contact with the anvil roller to draw the fibers between the cutting head and the anvil may also be controlled by the feed control toggle. A flap for sliding contact between the fibers and the anvil may also be used.

Abstract: A method for applying coating material to a moving substrate such as a glass mat web in shingle manufacturing includes conveying the web through a narrow channel and ejecting at least one coating material onto at least one surface of the web as it is conveyed through the channel. In a preferred embodiment, multiple coating materials may be applied to one surface of the web and multiple coating materials may be applied to the other surface of the web. The coating materials may be molten asphalt or other coating materials. The pressure of the coating material is controlled as a function of the line speed of the moving substrate to ensure consistently thick coatings at various speeds, including relatively high speeds, of the web. An apparatus in the form of a slot die is disclosed for carrying out the method of the invention.

Abstract: A system for cleaning an automobile having at least two colored cleaning streams includes a first mixing system for combining a first cleaning composition stream, a first concentrated color composition, and a first water stream to form a first diluted colored cleaning composition. A second mixing system combines a second cleaning composition stream, a second concentrated color composition, and a second water stream to form a second diluted colored cleaning composition. A first foaming system receives the first diluted colored cleaning composition. The first foam system delivers the first diluted colored cleaning composition to the vehicle. A second foaming system receives the second diluted colored cleaning composition. The second foam system delivers the second diluted colored cleaning composition to the vehicle.

Abstract: The invention disclosed herein describes a supervised autonomy system designed to precisely model, inspect and process the surfaces of complex three-dimensional objects. The current application context for this system is laser coating removal of aircraft, but this invention is suitable for use in a wide variety of applications that require close, precise positioning and maneuvering of an inspection or processing tool over the entire surface of a physical object. For example, this system, in addition to laser coating removal, could also apply new coatings, perform fine-grained or gross inspection tasks, deliver and/or use manufacturing process tools or instruments, and/or verify the results of other manufacturing processes such as but not limited to welding, riveting, or the placement of various surface markings or fixtures.

Abstract: Embodiments of the invention provide clip blow-off pulses of pressurized gas to clip dies using pressurized gas diverted from an onboard knife, gate and/or punch cylinder/valve during a reset or idle period of a clipping cycle and may be particularly suitable for rotating platform systems with circumferentially spaced apart respective clipper stations. Packaging systems include at least one clipper assembly with at least one pulse valve in communication with a pressurized gas (e.g., air) supply configured to generate a respective clip blow-off pulse of pressurized gas across a clip die.

Abstract: A coating comprises a resin solution including a solution of neoprene latex and liquid asphalt emulsion and an accelerator solution including an aqueous solution of zinc sulfate powder and water. A spray system for applying the coating includes a spray gun having first and second nozzles, a first pump fluidly connected between the first nozzle and a resin solution reservoir for delivering the resin solution to the first nozzle at a first fluid pressure, and a second pump fluidly connected between the second nozzle and an accelerator solution reservoir for delivering the accelerator solution to the second nozzle at a second fluid pressure different from the first pressure. The accelerator solution may be aerated by a source of compressed air prior to discharge from the second nozzle.

Abstract: A double-sided coated substrate transport device (1) is described. A die head for front face coating (3) and a die head for back face coating (4) coat a coating liquid onto a substrate 1. A drying oven (5) dries the coating liquid applied to the substrate (1), to form coating films on the front and back faces of the substrate (1). A first and second rotating body unit (20A, 20B) are respectively furnished independently at widthwise edge sections of the substrate (1). Each of the first and second rotating body units has a free roller (21) and a drive roller (22) constituting a pair of rotating bodies, and a rotating body swivel section (23). The free roller (21) and the drive roller (22) grip the widthwise edge sections of the substrate (1) from the front and back sides.

Abstract: The interior of a straight pipe is clad using a plurality of welding heads. The pipe is carried on support rollers including drive components for rotating the pipe about its axis while holding it fixed against axial movement. There are four welding heads with two carried on a cantilevered support arm of a respective one of a first and a second carriage mounted outside the pipe at opposite ends of the pipe and each movable in a direction longitudinally of the axis of the pipe. The heads are located on the arm at a common angular position at bottom dead center to weld vertically downwardly. The pipe support includes a pair of drive rollers arranged with their axes parallel to the axis of the pipe and adjustable in spacing to change the height of the pipe on the rollers relative to the welding heads.

Abstract: Inkjet print head dies are directly seated upon an exterior of a tubular member so as to face different directions.

Abstract: A portable machine and process is described for covering all sides of an elongated object with a liquid without the use of brushes. The machine is particularly useful with manufactured building products such as a fence picket, trim, molding, or any other type of board. The machine generally has four stations, an entry station that drives the object down a track, a liquid application station where the object is covered by liquid that is poured over the object, a blower station where the fluid is spread evenly over the object and excess fluid is blown off, and an exit station that continues to pull the object down the track and directs the object as the object leaves the exit station. Finally, the object may enter a releasably attached drop track.

Abstract: It is provided a double side coating device which can maintain a thickness of a coated film in constant. The double side coating device has a back up roller supporting a web material, a first coating head that is placed opposite to the back up roller and that applies a coating material onto a first surface of the web material, a suction roller that is provided with a plurality of supporting portions which projects annularly so as to contact with a uncoated portion of the first surface of the web material and on circumference of which suction holes are opened to suck atmosphere, and a second coating head that is placed opposite to the suction roller and that coats second surface of the web material with a coating material.

Abstract: The examples described herein provide methods and equipment for an anti-oxidation spraying on a steel billet. In some examples, when the billet at the temperature of 400° C.-1000° C. enters the predetermined spraying region, a plurality of anti-oxidation spraying devices are used to perform an anti-oxidation spray on the billet in two or more directions, thereby forming directly an anti-oxidation coating on the steel billet at 400° C.-1000° C. By using the example method and equipment described herein, on-line spraying of anti-oxidation coating on the steel billet can be performed under high-temperature condition, thereby reducing an oxidation burning loss rate of the steel billet.

Abstract: The wet treatment of wafer-shaped articles is improved by utilizing a droplet generator designed to produce a spray of monodisperse droplets. The droplet generator is mounted above a spin chuck, and is moved across a major surface of the wafer-shaped article in a linear or arcuate path. The droplet generator includes a transducer acoustically coupled to its body such that sonic energy reaches a region of the body surrounding the discharge orifices. Each orifice has a width w of at least 1 ?m and at most 200 ?m and a height h such that a ratio of h to w is not greater than 1.

Abstract: A coating device including a coating mechanism which includes nozzles for ejecting a liquid material onto front and rear surfaces of the substrate while rotating a substrate in an upright state, and a nozzle managing mechanism which manages the state of the nozzles, in which the nozzle managing mechanism includes a soaking portion which dips the front end of the nozzle in a soak solution, and a discharging portion which discharges at least the soak solution, and a nozzle managing method.

Abstract: A deflecting air ring includes a plurality of deflecting air nozzles for discharging a deflecting air jet onto a spray jet of a vaporizer in order to shape the spray jet. The deflecting air nozzles are configured such that the deflecting air jet is substantially laminar within a first region, while the deflecting air nozzles also generate turbulence in a second region situated downstream of the first region of the deflecting air jet.

Abstract: An electroless plating system includes a plating solution, and controlling reducing agents in the plating solution for deposition over outlier features smaller than about five hundred nanometers and isolated by about one thousand nanometers.

Abstract: A sheet restrainer is used to restrain movement of continuously traveling glass sheet and includes arms on either side of the glass sheet. A driving device coupled to the arms moves the arms from a retracted position in which the arms are withdrawn from the glass sheet to an engaged position in which the arms are near the glass sheet and in alignment with each other. Rollers are connected to the arms and contact the glass sheet in the engaged position. A damping device applies an adjustable damping force to at least one of the arms dampening movement of the arm in the engaged position thereby restraining movement of the sheet. In a method of operation, the damping devices restrain angular and/or lateral movement of the sheet by transmitting movement of the sheet against the rollers into a resistive damping force of the damping devices.

Abstract: A coating apparatus includes a first coating device, a number of second coating devices and a number of substrate holders. Each of the substrate holders is rotatable relative to the first coating device and the second coating devices such that one of two opposite holding surfaces of the substrate holder alternately faces the first coating device and the second coating devices.

Abstract: A deflecting air ring is disclosed having a plurality of deflecting air nozzles for discharging a deflecting air jet onto a spray jet of a vaporizer in order to shape the spray jet. The deflecting air nozzles are configured such that the deflecting air jet is substantially laminar within a close region, while the deflecting air nozzles also generate turbulence in a remote region situated downstream of the close region of the deflecting air jet.

Abstract: A tire dressing system includes an imaging device that captures an image of a vehicle tire or portion thereof and at least one application device that applies tire dressing to the tire based on the captured image. The system determines one or more tire parameters based on the captured image. The tire dressing system configures the at least one application device based on the tire parameter(s) such that the application device substantially restricts application of tire dressing to within the boundaries of the tire sidewalls. By determining the tire parameters, the tire dressing system may apply the tire dressing to the tire sidewalls while reducing or minimizing application of tire dressing to the body or rims of the vehicle.

Abstract: An apparatus for extrusion forming a sheet product having an extruder assembly with a sheet die through which a flowable material is delivered and a roll stand assembly made up of a roll stack sub-assembly and a sheet take-off sub-assembly. The roll stack assembly has first and second rolls between which a nip location is defined at which flowable material from the sheet die is delivered. The sheet take-off sub-assembly produces an advancing force upon a first sheet component made up of at least the first sheet layer. The roll stand assembly further has a coating system for applying a coating component to a surface on at least one sheet component advancing through the apparatus. The roll stand assembly is constructed to be reconfigured thereby to change a path traveled by the at least one sheet component and facilitate selective application of the coating component.

Abstract: The invention relates to a machining head with integrated powder supply for deposition welding using laser radiation. A machining head in accordance with the invention can in particular be used for deposition welding at a high deposition rate. In the machining head in accordance with the invention, the laser radiation is directed to supplied powder and to a material surface with a focal spot. The powder supply takes place symmetrically to the axial feed direction with a plurality of channels arranged oppositely. The channels are aligned at an obliquely inclined angle so that powder discharged from them is supplied into the focal spot of the laser radiation from two mutually oppositely disposed sides over the total width of the focal spot with respect to the axial feed direction.

Abstract: A method and apparatus for cleaning, drying, coating, baking etching and deposition of surfaces on glass substrate as it transitions thru and between small gaps between hydro-static porous media bearings. Due to the non-contact nature of the device extremely high pressures can be induced upon the work piece through various fluids without damage to the substrate, allowing the system to utilize the viscous nature of fluids to accomplish the desired cleaning, drying, coating, etching or baking. The process also allows for simultaneous and immediately sequential ordering of processes.

Abstract: A system for purging a plural component coating application system including: a first pressure regulator for receiving an inert gas, providing the gas at a first pressure; a first valve; a first operator connected to the first valve capable of being controlled by a logic controller; a first check valve; a mixing manifold; a second pressure regulator for receiving an inert gas, providing the gas at a second pressure that is less than the first pressure; a second valve; a second operator connected to the second valve capable of being controlled by a logic controller; a second check valve; a static mixer in fluid communication with the mixing manifold; an outlet from the static mixer for receiving a connection to at least two spraying members; and where the second regulator is capable of providing the second pressure at a pressure that is less than one-fifth of the first pressure.

Abstract: A method for determining of spraying parameters for controlling a painting appliance which sprays and is moved over an area to be painted, in particular a robot with a painting application. A known spraying map is produced, using known spraying parameters and paint amount, for a predetermined movement speed of the painting appliance, and a paint amount is matched to a new movement speed in comparison to the predetermined movement speed. Furthermore, new spraying parameters are calculated for the adapted paint amount, while maintaining a spraying map which is similar to the known spraying map.

Abstract: Photovoltaic elements can be formed by in-motion processing of a silicon ribbon. In some embodiments, only a single surface of a silicon ribbon is processed in-motion. In other embodiments both surfaces of a silicon ribbon is processed in-motion. In-motion processing can include, but is not limited to, formation of patterned or uniform doped regions within or along the silicon ribbon as well as the formation of patterned or uniform dielectric layers and/or electrically conductive elements on the silicon ribbon. After performing in-motion processing, additional processing steps can be performed after the ribbon is cut into portions. Furthermore, post-cut processing can include, but is not limited to, the formation of solar cells, photovoltaic modules, and solar panels.

Abstract: An application and infusion system for applying a resin to one or more fiber tows and for infusing the fiber tows with the resin, wherein each of the fiber tows is moving at a respective fiber speed. The application and infusion system includes a deposition and infusion system comprising one or more nozzles configured to deposit the resin on a respective one of the fiber tows. The system further includes a controller configured to control a flow rate of the resin through each of the nozzles relative to the fiber speed of the respective ones of the fiber tows. Other aspects of the application and infusion system are also provided.

Abstract: A printer includes a driving station. The driving station includes a pair of pinch rollers between which print media can be fed. A printing station is configured to print upon the fed print media. An adhesive application station is configured to apply adhesive to the printed print media. A tray assembly includes a tray in which the printed print media can collect in a stack, and a vibrator configured to vibrate the tray.

Abstract: A robotic spray system is provided for accurately spraying mold release onto any size or shaped green tire. The system analyzes individual green tires using an integrated vision system. The system controls the robotic spray position, the fan, fluid, atomizing air, and tire rotation speed for optimal spray coverage on both the inside and outside of green tires. The system includes a conveyor, an overhead mounted camera located over an infeed station, and a second camera located perpendicular to the green tire's tread and several feet away from the center of the tire. Pictures of the green tire in the station are used to estimate the center and radius of the tire and locate the angle of the bar code with respect to the center of the tire. Reference points are provided from the camera images and robot positions are calculated to control the spraying.

Abstract: A fluid dispenser for use in the processing of substrates. The dispenser has a dome shaped body with a convex upper surface and has a number of conduits designed to supply fluid to the surface of a substrate at predetermined points.

Abstract: This invention generally relates to a spray apparatus and a method useful in the repair of coating adhered to can ends used in the food and beverage packaging industries. The spray apparatus has one or more elongated shafts rotatably coupled to a frame. One or more bearing members are rotatably coupled to the shafts. One or more plates are rotatably coupled to the bearing members. One or more spray guns are coupled to the plates. The spray guns of the spray apparatus are structured to apply fluid to the can end with a solid stream emitted from the spray guns in a circular pattern. A method for the repair of coating adhered on a can end is provided as well.

Abstract: A thin film deposition apparatus to form a fine pattern on a large substrate. The thin film deposition apparatus includes a deposition source, a first nozzle that is disposed at a side of the deposition source and includes a plurality of first slits, a second nozzle that is disposed opposite to the deposition source and includes a plurality of second slits, and a second nozzle reinforcement unit that is disposed on the second nozzle and crosses the second nozzle.

Abstract: A dispensing apparatus includes a frame, a support coupled to the frame to receive electronic substrates, a first dispensing unit to dispense viscous material, a second dispensing unit to dispense viscous material, and a gantry coupled to the frame. The gantry includes a first Z drive mechanism to support the first dispensing unit and lower the first dispensing unit toward a first electronic substrate pattern when performing a dispense operation, and a second Z drive mechanism to support the second dispensing unit and lower the second dispensing unit toward a second electronic substrate pattern when performing a dispense operation. The second Z drive mechanism may be adjusted relative to the first Z drive mechanism a predetermined distance. A controller controls a dispense operation of the first dispensing unit on the first electronic substrate pattern and a dispense operation of the second dispensing unit on the second electronic substrate pattern.

Abstract: A coating comprises a resin solution including a solution of neoprene latex and liquid asphalt emulsion and an accelerator solution including an aqueous solution of zinc sulfate powder and water. A spray system for applying the coating includes a spray gun having first and second nozzles, a first pump fluidly connected between the first nozzle and a resin solution reservoir for delivering the resin solution to the first nozzle at a first fluid pressure, and a second pump fluidly connected between the second nozzle and an accelerator solution reservoir for delivering the accelerator solution to the second nozzle at a second fluid pressure different from the first pressure. The accelerator solution may be aerated by a source of compressed air prior to discharge from the second nozzle.

Abstract: Two sprayer units are arranged along a conveyer. A coating surface of a panel conveyed by the conveyer is divided into four coating areas. Then, the sprayer units reciprocate parallel to the conveying direction and coat the individual coating areas. At this time, at the boundaries of the coating areas, the positions of the turning paths for reciprocation of the sprayer units are shifted from the front side to the rear side in the conveying direction and step-like coating trajectories are formed. As a result, the size of the area coated by each of the sprayer units can be expanded.

Abstract: An edge bead removal device for a spin coater apparatus and methods of edge bead removal that overcome the deficiencies of conventional edge bead removal techniques. The edge bead removal device includes a coater cup and a head situated within the coater cup proximate to a peripheral edge of a substrate. The head is movable in a radial direction relative to an azimuthal axis of a rotatable substrate support inside the coater cup. The position of the head relative to a rim of the peripheral edge is mapped using an optical sensor. When the substrate support rotates the substrate and the head is used to dispense edge bead removal chemical, the radial position of the head is adjusted, as guided by the map, relative to the azimuthal axis to maintain a constant gap between the head and the substrate's peripheral rim.