Abstract: A coating process method in which a coating liquid is discharged onto the surface of a target substrate to be processed while rotating the target substrate so as to expand the coating liquid radially outward on the target substrate and, thus, to form a coated film comprises the step of detecting that the actual discharging of a coating liquid from a coating liquid discharging nozzle is started, and the step of controlling based on a signal of the detection at least one of the driving timing of a pump for allowing the coating liquid to be discharged from the coating liquid discharging nozzle, the operation timing of a valve mounted to a pipe for supplying the coating liquid into the coating liquid discharging nozzle, and the rotation starting or stopping timing of the target substrate.

Abstract: A printing device includes a main body and a plurality of nozzle units on a lower portion of the main body, a plurality of accommodation grooves within the main body and configured to contain a printing material, and a plurality of slits in each nozzle unit and each slit connected to an accommodation groove, so as to coat the printing material onto a printing object. Since the printing device includes a plurality of nozzle units that can individually control the amount of printing material flowing out of the printing device, the amount of printing material can be easily controlled and regulated. A method of using the printing device includes coating a printing roll with the printing material.

Abstract: A spray assembly for applying a fluid material to a surface includes a first spray bar and a second spray bar, each of which is mounted for movement along an axis. Each spray bar includes a plurality of nozzles, each of which is associated with a valve that can be opened or closed. Each nozzle is adapted to dispense a fluid material in a defined spray pattern onto the surface. The nozzles are spaced along the length of the spray bar to which they are attached and disposed above the surface so that the spray pattern from any nozzle on a spray bar does not overlap the spray pattern of a longitudinally adjacent nozzle. The assembly also includes a source of fluid material, and a fluid circuit through which fluid material may be supplied to each of the nozzles. Components of the assembly are also provided for intercepting at least a portion of the spray from a nozzle of the second spray bar to prevent the spray pattern from such nozzle from overlapping with the spray pattern from a nozzle of the first spray bar.

Abstract: A spray device for coating a surface of a human body with a spray liquid, the spray device including at least one nozzle and at least one liquid container, wherein the at least one liquid container is adapted to hold a volume of spray liquid substantially equal to an amount required to apply a single dosage of the spray liquid for coating a surface of a human body. The spray device further includes a liquid channel adapted to connect the at least one liquid container to the at least one nozzle, and a spray valve adapted to cause the spray liquid to flow from the at least one liquid container to the at least one nozzle using the liquid channel. The spray device still further includes a control device adapted to control the operation of the spray device; and a mounting device for mounting the spray device to a mounting surface.

Abstract: A robotic pen includes a computer numerically controlled machine having a multiaxis stage for mounting a workpiece, and a cooperating elevator which translates relative thereto. A pen tip is rotatably mounted to the elevator. And, a dispenser is joined in flow communication with the pen tip for ejecting a stream of material atop the workpiece as the workpiece moves relative thereto for maintaining a substantially constant gap between said pen tip and the workpiece during relative movement therebetween.

Abstract: A chemical vapor deposition (CVD) apparatus includes a process chamber where a deposition process is performed on a wafer. A gas supply assembly is mounted in the process chamber for supplying a process gas to the process chamber, and a vacuum pump is mounted in the process chamber for exhausting the process gas. A support is mounted in the process chamber for supporting the wafer, and a position control assembly raises and lowers the chuck. A controller controls the position control assembly to vary a distance between the wafer and the gas supply assembly during the deposition process. A CVD method for forming a deposition layer on a wafer includes supplying a process gas to a process chamber, dividing a process time into a plurality of process stages, varying a distance between the wafer and a gas supply assembly according to the process stages, and exhausting the process gas.

Abstract: An apparatus for processing a substrate has a liquid supply unit, a nozzle unit, a first valve and a second valve. The liquid supply unit has an output port and an input port, and a processing liquid is output from the output port. The nozzle unit has a first port and a second port, and the first port is connected to the output port of the liquid supply unit. The first valve is connected between the second port of the nozzle unit and the input port of the liquid supply unit. The second valve is connected between the second port of the nozzle unit and the output port of the liquid supply unit. Moreover, the switch states of the first and second valves are opposite in order to control whether the nozzle unit spreads the processing liquid on the substrate.

Abstract: An apparatus for introducing a testing material into an optical disc production includes a vessel for holding a test material and a regulator for pressurizing the vessel, wherein the vessel and regulator are connectable to a disc production for using the test material in lieu of bonding material in the disc production.

Abstract: A spray device for coating a surface of a human body with a spray liquid, the spray device including at least one nozzle and at least one liquid container, wherein the at least one liquid container adapted to hold a volume of spray liquid substantially equal to an amount required to apply a single dosage of the spray liquid for coating a surface of a human body. The spray device further includes a liquid channel adapted to connect the at least one liquid container to the at least one nozzle, and a spray valve adapted to cause the spray liquid to flow from the at least one liquid container to the at least one nozzle using the liquid channel, the at least one nozzle producing a spray jet of the spray liquid. The spray device still further includes a control device adapted to control the operation of the spray device, and a sweeping device for sweeping the spray jet from the at least one nozzle to coat at least a portion of the human body.

Abstract: An apparatus for applying powder coating material onto large objects such as automotive, truck or other vehicle bodies includes a powder spray booth defining a controlled area within which to apply powder coating material onto the vehicle bodies, a powder kitchen located at a remote position from the powder spray booth, and, a number of feed hoppers located proximate the booth which receive powder coating material from the powder kitchen and supply it to automatically or manually manipulated powder spray guns associated with the booth. Oversprayed powder coating material is removed from the booth interior by a powder collection and recovery system which transmits the oversprayed powder back to the powder kitchen for recirculation to the powder spray guns.

Abstract: An apparatus for applying powder coating material onto large objects such as automotive, truck or other vehicle bodies includes a powder spray booth defining a controlled area within which to apply powder coating material onto the vehicle bodies, a powder kitchen located at a remote position from the powder spray booth, and, a number of feed hoppers located proximate the booth which receive powder coating material from the powder kitchen and supply it to automatically or manually manipulated powder spray guns associated with the booth. Oversprayed powder coating material is removed from the booth interior by a powder collection and recovery system which transmits the oversprayed powder back to the powder kitchen for recirculation to the powder spray guns.

Abstract: The intermittent coating apparatus which includes a nozzle 1 which applies a paint 6 to a base material, a feeding side two-way valve 10 which repeats feeding of the paint 6 to the nozzle 1 and stop of the feeding, a return side two-way valve which 11 repeats discharge of the paint 6 to a return side and stop of the discharge, a paint flow path 12, means to feed the paint 6 into the flow path 12, and paint returning means 5 which repeats suction and return of the paint 6 out of and into the nozzle 1, and is characterized in that switching of the feeding side two-way valve 10 is carried out earlier than that of the return side two-way valve 11 within a range not shorter than 5 msec and not longer than 100 msec at least at a coating start time.

Abstract: A pair of hoses connects directly from the feed pumps to the extruder without utilizing a PCV (pressure compensating valve). Each feed unit has automatic air pressure relief through a solenoid valve on top of the feed unit so that the unit does not stall at full static line pressure. When the dispense valve at the extruder is shut off, air pressure to the air motor is dumped. A pair of electric eyes is utilized—the first signals the pump (by providing pressurized air) to provide pressure while the second actually opens the extruder when the article to be coated comes into position. The first valve is located only a short distance ahead of the second valve so that the line pressure does not have a chance to exceed the dynamic pressure before the extruder opens.

Abstract: A chemical pump includes a pressure chamber, a partition member for dividing the pressure chamber into a cleaning pressure chamber and a discharging pressure chamber, a filter part disposed on the primary side of the discharging pressure chamber, and a single drive mechanism. A pair of openings with respective check valves mounted therein are provided in each of the cleaning and discharging pressure chambers, and are positioned so as to cause a resist solution to flow only in the +Z direction. The drive mechanism moves the partition member in the ?X direction to cause the resist solution to be sucked into the cleaning pressure chamber and to cause the resist solution to be discharged from the discharging pressure chamber.

Abstract: A device for applying a coating medium onto a substrate, includes at least one spray valve that has a nozzle opening that can be adjusted with regard to its effective outlet area using a closing mechanism, whereby the substrate can be moved past the spray valve, which can be supplied with the coating medium under pressure via a supply line, whereby the positioning device is assigned a regulator that has at least one target value input for the instantaneously required outflow rate of the coating medium from the spray valve and at least one actual value input for the mass flow rate through a supply section arranged in front of the nozzle opening, and from the deviation between these values, the regulator forms an adjustment signal that moves the positioning device in the direction to offset the deviation.

Abstract: Systems and methods are disclosed for an automatic and continuous supply of coating material to a coating applicator in optical fiber fabrication. The present invention switches from one coating reservoir to another by way of a transitional period in which both coating reservoirs are supplying coating material to the coating applicator. For example, while an in-use reservoir is supplying the coating material to the coating applicator, a standby reservoir is being filled, settled to off gas air bubbles and then slowly pressurized. A sized orifice is used to slowly bleed off pressure from the in-use reservoir at a rate that does not allow the pressure in the in-use reservoir from falling out of a desired pressure range.

Abstract: In drying a coating liquid such as a resist applied to a substrate under reduced pressure, a coating film in a peripheral portion tends to lose good shape regardless of duration of a drying period, and it is difficult to set an appropriate exhaust flow rate. After the substrate is loaded in an airtight container, a pressure is reduced from atmospheric pressure to a pressure slightly higher than the vapor pressure of a solvent, for example. Then, the solvent actively evaporates from the coating liquid. Here, evacuation is performed initially based on a first flow rate set value Q1, and thereafter, it is performed based on a second flow rate set value larger than Q1. Rounding of the surface in the peripheral portion is corrected by evacuation based on Q1, and more active evaporation of a solvent component is attained by switching to Q2.

Abstract: A spraycoating device includes at least one coating liquid spray gun (2) which contains a measuring valve device (40) opening or closing a compressed gas measuring valve flow path (42) depending on the positions of a liquid feed valve (4). The measurement of the compressed gas flow allows automatically determining whether the liquid feed valve (4) is situated in a fully close or a fully open position or in an arbitrary intermediate position thereto.

Abstract: An apparatus for applying powder coating material onto large objects such as automotive, truck or other vehicle bodies includes a powder spray booth defining a controlled area within which to apply powder coating material onto the vehicle bodies, a powder kitchen located at a remote position from the powder spray booth, and, a number of feed hoppers located proximate the booth which receive powder coating material from the powder kitchen and supply it to automatically or manually manipulated powder spray guns associated with the booth. Oversprayed powder coating material is removed from the booth interior by a powder collection and recovery system which transmits the oversprayed powder back to the powder kitchen for recirculation to the powder spray guns.

Abstract: A device for moistening an envelope flap includes a mechanism which defines an envelope feed path and a plate disposed adjacent the envelope feed path. The plate passes between the envelope body and the envelope flap. A plurality of orifices formed in the plate discharge moistening fluid received from a reservoir onto the envelope flap. The moistening device also includes a valve mechanism to selectively supply each of the orifices with moistening fluid from the reservoir. A flap sensing mechanism is disposed adjacent the envelope feed path for sensing an edge portion of the envelope flap and operatively connected to the valve mechanism to supply signals to the valve mechanism to selectively actuate the valve mechanism to selectively supply moistening fluid to the orifices in response to the sensing of the edge portion of the envelope flap.

Abstract: A photoresist supply apparatus is provided. The photoresist supply apparatus includes a lower photoresist sensor and an upper photoresist sensor respectively installed near the bottom and the top of a trap tank to detect a photoresist in the trap tank. A drain line is connected to an upper side of the trap tank to release air. A photoresist-blocking valve is installed at the drain line, the photoresist-blocking valve structured to be opened to release air or closed to prevent photoresist loss according to signals detected by the lower photoresist sensor and the upper photoresist sensor. While the photoresist is supplied into the trap tank, the photoresist-blocking valve is opened to release air. After the photoresist supply into the trap tank is completed, the photoresist-blocking valve is closed to prevent the loss of a large amount of the photoresist through the drain line.

Abstract: Immediately after a cold substrate G is placed on a substrate table 3, a large electric power P1 is supplied to a heating element 32 embedded in the substrate table for a time period T1 so that temperature of the substrate table overshoots a target temperature, and thereafter zero or very small electric power P2 is supplied to the heating element for a time period T2 so that the temperature of the substrate table 3 is lowered to the target temperature while temperature of the substrate continues to rise up to the target temperature. When both the temperature of the substrate table and of the substrate reaches approximately to the target temperature after the time period T2 has elapsed, control of the electric power is entrusted to a PID controller.

Abstract: An apparatus for coating sheet metal strip substrate with lubricant type laminate includes top and bottom roller coaters for pinching the metal therebetween to apply laminate. The roller coaters are movable between engaged and disengaged positions. Pneumatic cylinders for actuating the top and bottom roller coaters are operatively connected such that the top and bottom roller coaters can “float” or move vertically while at the same time pinching the metal strip therebetween. The roller coaters comprise roller coater carriages that carry applicator rolls between support rolls without the need to journal ends of the applicator roll. A spring biased applicator head applies laminate directly to one or more sections of the applicator roll.

Abstract: A photoresist supply apparatus and a method of supplying photoresist using the same are provided. The photoresist supply apparatus includes a flow length measurer for measuring the flow length of photoresist remaining at the tip of a nozzle unit; a measured data processor for converting data measured by the flow length measurer into an electrical signal; and a valve controller for finely controlling the flow length of photoresist by controlling the amount of air flowing into an automatic on/off valve in response to the electrical signal fed back from the measured data processor. Accordingly, by measuring the flow length of photoresist at the tip of nozzle unit in real time and feeding back the measured flow length, a faulty process due to an irregular flow length of photoresist can be prevented, and a fixed amount of photoresist can be ejected.

Abstract: A substrate is horizontally held by a substrate holding portion freely movable in the Y-direction, and a nozzle portion is provided above and opposing the substrate, and movable in X-direction corresponding to the coating liquid feeding region of the substrate. A discharge opening is formed at a lower end of the nozzle portion, and a channel connecting the discharge opening with a coating liquid feed tube coupled to an upper end of the nozzle portion is formed within the discharge opening. At the midstream of the channel, a liquid pool portion larger in diameter than the discharge opening is formed, the inside of which is provided with a filtering member formed by porous bodies blocking the channel. The filtering member forms a pressure loss portion, which absorbs pulsation occurring at the coating liquid feed tube before it reaches the discharge opening.

Abstract: A machine for automatically applying lane dressing travels up and down the lane to apply dressing according to a certain predetermined and preselected pattern. A single dispensing head travels back and forth across the lane as the machine moves linearly along the lane so that dressing is transferred to a buffer brush that engages the lane surface and applies the dressing thereto. The oil pattern is determined by actuation and deactuation of the dispensing head as it traverses the lane, such control of the head being provided by a special pattern control device in the nature of a cylindrical pattern tube that extends alongside the path of travel of the dispensing head. A sensor on the dispensing head detects pattern structure on the control device to responsively actuate and deactuate the head. In a preferred form, such structure takes the form of a series of metallic strips extending parallel to the path of travel of the dispensing head and spaced circumferentially around the periphery of the pattern tube.

Abstract: A device for applying a coating medium onto a substrate, includes at least one spray valve that has a nozzle opening that can be adjusted with regard to its effective outlet area using a closing mechanism, whereby the substrate can be moved past the spray valve, which can be supplied with the coating medium under pressure via a supply line, whereby the positioning device is assigned a regulator that has at least one target value input for the instantaneously required outflow rate of the coating medium from the spray valve and at least one actual value input for the mass flow rate through a supply section arranged in front of the nozzle opening, and from the deviation between these values, the regulator forms an adjustment signal that moves the positioning device in the direction to offset the deviation.

Abstract: An apparatus and a method for applying a fluid, which enable an application amount of the fluid to be stabilized even at the start of fluid discharge and at the end of the fluid discharge. The apparatus includes an application head and a control unit, whereby operational control is carried out so that a discharge member is rotated and moved in a discharge direction along an axial direction of the discharge member when the fluid is to be discharged, while the rotation of the discharge member is stopped and the discharge member is moved in a direction opposite to the discharge direction when the discharge is to be stopped. The application amount of the fluid to be applied can be stabilized even at the start of fluid discharge and at the end of the fluid discharge.

Abstract: A photoresist ashing system includes two processing chambers configured for alternate operation in processing substrates. The system includes a single pump that performs both pump-down and process pumping of both of the chambers. In operation, one of the chambers is pumped down and processed while the other chamber is vented, unloaded and re-loaded.

Abstract: A method is disclosed for providing a steady transition state for an integral pneumatic dispensing system that is related to a robot. The method dispenses a single material using a pneumatic dispensing system having a single output including first and second shotmeters having first and second meters, first and second encoders and first and second pressure transducers. The method includes the step of loading the first shotmeter with the material. Once loaded, a pressure is applied to the material. The material is then dispensed out of the first shotmeter by forcing the material through the single output. Once the material in the first shotmeter is dispensed to a predetermined volume, the method begins to transition the flow of material from the first shotmeter to the second shotmeter. The transition includes the control of the volume being dispensed and the pressure applied to the material.

Abstract: The present invention is a method and apparatus for ejecting a very small amount of liquid at high speed and precisely independent of the viscosity of the liquid. This apparatus and method begins by applying pressure to the liquid prior to starting ejection of the liquid and/or holding a pressure near an ejection orifice after the end of liquid ejection at a predetermined specific value so that an ejection rate of the liquid through the ejection orifice is kept constant. This apparatus and method is able to control the liquid temperature and able to refill the liquid without entrapment of bubbles occurring.

Abstract: The intermittent coating apparatus which includes a nozzle 1 which applies a paint 6 to a base material, a feeding side two-way valve 10 which repeats feeding of the paint 6 to the nozzle 1 and stop of the feeding, a return side two-way valve which 11 repeats discharge of the paint 6 to a return side and stop of the discharge, a paint flow path 12, means to feed the paint 6 into the flow path 12, and paint returning means 5 which repeats suction and return of the paint 6 out of and into the nozzle 1, and is characterized in that switching of the feeding side two-way valve 10 is carried out earlier than that of the return side two-way valve 11 within a range not shorter than 5 msec and not longer than 100 msec at least at a coating start time.

Abstract: A device for the application of solid particulate material to a target surface includes one or more containers for storing the solid particulate material and one or more transfer devices for transferring the solid particulate material from the containers to the target surface. Each container includes one or more gates positioned substantially at the container's outlet. Mechanisms are provided for controlling the extent to which each individual gate opens, while the device is in use; and for controlling the rate at which the transfer devices transfer the solid particulate material from the containers while the device for the application of solid particulate material to a target surface is in use.

Abstract: An apparatus for controlling a speed of a motor of a metering pump providing pressurized fluid at a dispensing gun. The dispensing gun is opened and closed to dispense fluid onto a substrate being carried by a conveyor past the dispensing gun. The apparatus has a pressure control producing first motor speed signals as a function of changing speeds of the conveyor and changing fluid pressures in the dispensing gun when the dispensing gun is open. A flow control produces second motor speed signals as a function of the changing speeds of the conveyor. During changes in conveyor velocity, a motor speed control provides the first motor speed signal to the pump motor which operates the motor at speeds causing the pump to provide fluid to the dispensing gun at pressures changing at a rate tracking a rate of change of the speed of the conveyor.

Abstract: A multiple orifice applicator system for dispensing a plurality of rows of fluid material onto a work piece is disclosed. A source of fluid material is in fluid communication with the multiple orifice applicator. The multiple orifice applicator is mounted to a robotic arm, which positions the multiple orifice applicator relative to the work piece to enable the multiple orifice applicator to dispense fluid material onto the work piece. Fluid material is caused to flow from the source of fluid material into the multiple orifice applicator. The fluid material enters the multiple orifice applicator through an inlet port and is dispersed and spread out in a dispersing chamber. The fluid material is dispensed onto the work piece through a plurality of outlet orifices in the multiple orifice applicator.

Abstract: This invention relates generally to systems for depositing a material onto a surface, and more particularly, to control systems for metering the amount of material being dispensed. The present invention provides an active compensation metering system that automatically compensates for material changes due to changes in material pressure, material temperature, and material viscosity.

Abstract: A lane maintenance machine having wicks that absorb dressing from a reservoir and transfer it to the applicator of the machine has a gravity-fed dressing supply system that maintains the dressing at a substantially constant level within the wick reservoir. A small pilot chamber upstream from the reservoir and in open communication therewith at the same elevation as the reservoir has its fluid level directly controlled by a float sensor to in turn indirectly control the level within the wick reservoir. The float sensor within the pilot chamber provides a signal to a controller when the level within the pilot chamber drops below a predetermined point so that a control valve between the pilot chamber and the main supply tank opens to allow a makeup volume of dressing to flow by gravity from the main tank into the pilot chamber.

Abstract: A pressure transducer for the production of a controlled under or overpressure comprises a valve to which compressed air can be applied, a motor for adjusting the position of the valve block, a sensor for measuring the pressure to be controlled and an electronic controller. The valve comprises a valve block working together with a valve seat. The rotational movement of the shaft of the motor is converted into a longitudinal movement of the valve block by means of a coupling. Between the shaft of the motor and the valve block, a spring is inserted which applies a mechanical load to the motor so that the motor does not reach the set speed given by the controller but turns slower. The load on the motor is dependent on the position of the valve block. For the controller, this is equivalent to a linearization of the characteristic curve of the regulated system.

Abstract: With a device for applying a coating agent onto a cyclically moved substrate, a uniform coating thickness may be achieved, although the rate of advance is not constant. At least one spray valve is provided which is permanently supplied with coating agent and the nozzle opening of which being adjustable with regard to the size of its effective discharge area in case of change of the rate of advance of the substrate according to the dependency, for a constant layer thickness of the coating agent, on the discharge rate of the coating agent out of the spray valve on the rate of advance of the substrate.

Abstract: A liquid output portion is arranged above and moves relative to a semiconductor substrate with determined film formation and non-film-formation regions. The liquid output portion continuously outputs a liquid in a constant amount to the substrate. Below the liquid output portion is a liquid shut-out-portion. A liquid controlled to spread in a constant amount is continuously output from the liquid output nozzle to the substrate. While the nozzle and the substrate relatively move, the liquid is supplied to a first region, and the liquid is supplied to a second region in such a way that the liquid supplied and spread in the second region is in contact with the liquid supplied and spread in the first region. Where projections and depressions are formed on the surface of the substrate, an amount of the liquid supplied varies depending upon the ratio between the projections and depressions.

Abstract: The present invention provides a method and apparatus for dispensing onto a substrate. In one embodiment, the apparatus includes an injector having an injecting outlet and an air inlet, a fixture for receiving a substrate in communication with the injecting outlet and the air inlet and having a gasket forming a seal around the injecting outlet and air inlet, and a sheet of substantially taut film disposed between the injector and a substrate placed in the receptacle of the fixture such that, when the injector is in a position for dispensing encapsulant to a process area on the substrate, at least the injectng tip and the inlet tip of the injector project through the substantially taut film to the process area.

Abstract: The coating material is supplied to a coating die provided with a manifold chamber, a draw-in chamber provided with a diaphragm, a supply passage and a discharge opening. The coating material is stored temporarily in the manifold chamber, is supplied through the supply passage to the discharge opening, and is discharged through the discharge opening onto the surface of the base sheet. The discharge of the coating material through the discharge opening is interrupted by deforming the diaphragm so as to form a draw-in chamber. The ball nut is driven by the servomotor so as to move the ball screw axially away from the supply passage to deform the flexible diaphragm so that the coating material is drawn into the draw-in chamber to interrupt discharging the coating material through the discharge opening. Thus, the coating material is applied intermittently to the substrate.

Abstract: An apparatus and a method for applying a substance to a web is provided. The apparatus includes a substance and a valve for dispensing a known amount of substance from the valve. A substance supply is in communication with the valve for supplying the substance to the valve. A fluid pressure source is present and is in communication with the valve. The fluid pressure source delivers fluid pressure to the valve to actuate the valve in order to dispense a known amount of the substance from the valve. Also, the valve dispenses the substance at a rate in response to the speed of the web so that a substantially uniform amount of the substance is applied to the web.

Abstract: A system for controlled dispensing of a material onto an elongated window component. A nozzle dispenses the material into contact with a surface of the elongated window component at a delivery site located along a path of travel of the elongated window component. A conveyer moves the elongated window component along the path of travel relative to the nozzle at a controlled speed. A metering pump delivers controlled amounts of the material to the nozzle. A pressurized bulk supply delivers the material to an inlet to the metering pump. A controller regulates the speed of the metering pump to control the flow rate of the material dispensed by the nozzle.

Abstract: A pizza sauce dispenser simultaneously dispenses and spreads a precisely controlled amount of sauce onto a pizza dough base without manually handling the sauce or the dough during operation. The dispenser includes a selectively rotatable disc and an arm that selectively extends over the disc. At lease one nozzle is supported by the arm and selectively dispenses the sauce onto the dough. A control mechanism controls: (1) a selected rate and direction of disc rotation; (2) a selected pivot rate and direction of the arm; and/or (3) a selected rate of dispensing sauce through the nozzle. In use, with pizza dough placed on the disc, the disc is rotated and the arm pivoted over the dough so that the nozzle traverses a path from the outside edge of the dough to the center of the dough or vice versa. Sauce thus is deposited in a spiral or other desirable pattern.

Abstract: A powder coating system comprising at least one throttle unit (10) which is adjusted by an electric motor, preferably a stepping motor (6) through a bellows connector (12).

Abstract: The application of (for example, elongated strip-shaped) spots of adhesive paste to successive objects (such as paper or cardboard blanks which are to be converted into soft or hinged-lid packs for arrays of cigarettes) which are advanced stepwise below the nozzle or nozzles of one or more pasters at an adhesive-applying station is regulated by a control unit which receives signals denoting the speed of the conveyor for the objects and the position of the object at the adhesive-applying station. The control unit regulates the operation of the valve for each nozzle of the paster by taking into consideration the inertia of electrical and mechanical constituents of the paster. This ensures the application of spots having an optimum shape and an optimum position relative to the respective objects and containing predetermined quantities of adhesive.

Abstract: An electrostatic paint atomizer connected to a discharge station at high voltage is supplied, via an isolating conveying line, with individual divided-off quantities of paint enclosed between two pigs from a loading station at the other end of the conveying line. The paint is conveyed by a transport device supplying a thrust medium (compressed air or insulating liquid) to discharge the paint in the discharge station. A reverse transport device operating with compressed air transports the pigs back to the loading station. The length (L) of the conveying line between the loading and the discharge stations and the length (l) of a divided-off quantity of paint, are dimensioned to provide a sufficiently long isolating path (L-l) to avoid a voltage flashover. A continuous supply of paint is achieved with two parallel conveying lines, through which quantities of paint are metered with an offset from each other.

Abstract: A chambered doctor blade apparatus provides an automatic system for cleanup and replacement of coating substance, as well as operating a hydraulic head loading system that includes hydrostatic compensation, and integrates the head loading mechanism into the automated cleaning, flushing and replacement cycle. A programmable logic controller (PLC) is connected to a touch screen display that presents an interactive graphical user interface for control purposes. The PLC is programmed to carry out sequentially the required steps for cleaning, refilling, and running the chambered doctor blade assembly, and to alternate water-based and non-water-based coatings without necessitating removal of the doctor blade head from the transfer roller. Each coating run begins with a purge step in which a new coating material is pumped through the system to waste to remove any residual material from the previous coating run.

Abstract: The object of the present invention is to provide an apparatus and a method for applying a viscous fluid whereby a constant application diameter is achieved through a simple operation without a Tact loss while a surface of a member to be applied can be less damaged. An adhesive application member (2111) having a screw portion (2122) inserted therein is rotated by a rotating device (230), so that a nozzle stopper (2114) of the adhesive application member is prevented from interfering with a wiring pattern on a face of a circuit board. Moreover, the screw portion is rotated synchronously as well when the adhesive application member is rotated, thereby preventing the adhesive from being discharged out from the nozzle in consequence to the rotation of the adhesive application member. An application diameter can hence be uniformed.