Abstract: A method and an apparatus capable of efficiently producing an epitaxial layer grown at one time on a multiplicity of substrates with uniform thickness and quality are disclosed, in which a sealable growth chamber filled in a solution used to achieve liquid-phase epitaxial growth and holding therein at least one row of thin plate-like substrate is turned about the horizontal axis. The growth chamber is tilted or overturned so that the solution in the growth chamber is stirred homogeneously and the effect of gravity on the solution is excluded. A solution chamber for holding therein the solution is connected with the growth chamber via a gate valve. After the liquid-phase epitaxial growth, the growth chamber is overturned and then the gate valve is opened so that the solution in the growth chamber returns to the solution chamber. Thus, reuse of the solution is possible.

Abstract: This invention relates to the treatment of substrates with fluidized material in repetitive patterns during application cycles. The treatment patterns made with this invention can be altered by changing machine operating parameters. The patterns of fluidized material are applied to substrates using intermittent charges of compressed air. The intermittent charges of compressed air pass through a venturi slot which creates a region of low pressure in the charges adjacent to a region where the fluidized material accumulates between application cycles. This region of low pressure helps to entrain the fluidized material in the charge of compressed air. After the fluidized material is entrained in the charge of compressed air, the charge deposits the fluidized material on the substrate.

Abstract: A method is disclosed for coating dowels with a substantially uniform coat of water soluble glue. A plurality of dowels and a preselected amount of liquid, water soluble glue are placed in a closed container. The container is rapidly shaken so that the container moves in a combination oscillating motion comprising an up and down movement and a back and forth movement that is substantially perpendicular to the up and down movement. Dowels coated with the liquid, water soluble glue are removed from the container and deposited on a drying surface. The dowels are dried by applying heat and a stream of air to the dowels. When the exposed surface of the coat of water soluble glue on the dowels has become essentially tack free but before the coat has dried completely, the dowels are rotated about their longitudinal axes so as to separate any dowels that are stuck together and to free any dowels stuck to the drying surface.

Abstract: An apparatus and method for spin coating a substrate with a liquid material which prevents the material from contacting the edge or backside of the substrate or forming an edge bead at the periphery of the substrate is disclosed. A spin chuck is equipped with a conformable elastomer which seals the edge of the substrate and forms a continuous surface with a planar surface of the substrate for the liquid material to flow off the substrate unimpeded during the spin coating process. As the elastomer is resilient, small variations in substrate size and shape are automatically compensated. None of the substrate area is lost to masking and/or removal processes as in the prior art, allowing the entire substrate area to be available for further processing.

Abstract: An semiconductor substrate processing apparatus of the type including a furnace tube associated with a fluid supply unit and a fluid discharge unit, wherein the furnace tube is rotatably supported by pairs of confronting rollers and rotated by a motor under the control of a controller in order to achieve various kinds of processing of semiconductor substrates within the furnace tube. With this rotatable furnace tube, the apparatus exhibits high radial temperature uniformity and is able to prevent deformation of the furnace tube.

Abstract: An apparatus and method is provided for liquid treating, particularly with coating materials such as paint, of an article, especially an article having a plurality of internal passages. The article is simultaneously rotated on an axis of rotation of the article and about a circular travel path into, back and forth in, and out of the liquid bath. The coated article is moved out of the bath, naturally drained under gravity, and then subjected first to low speed, then high speed rotation to clear the article of excess coating liquid and partially to dry the coating.

Abstract: A system is provided for tinting eyeglass lenses wherein the lenses are engaged in a frame which is both vertically reciprocated and simultaneously rotated about on an axis central to and orthogonal to the plane of the lens so that an annular gradient tint is produced darker at the outside edges of each lens and becoming progressively lighter toward the center, with the optical center of the lens either being completely clear or substantially lighter than the rest of the lens.

Abstract: Methods, compositions and apparatus are provided for coating a substrate with a strongly adherent hydroxyapatite coating, which allows for ingrowth of natural bone and strong bonding between the coating and the substrate. The procedure provides for coating under conditions which form sticky particles which bind to the substrate to form a crystalline hydroxyapatite coating. The coating has particular application for prostheses, where porous areas of the prostheses are completely coated with a thin sturdy coating of hydroxyapatite.The apparatus includes a coating trough in which the substrates are present and the reactive components added. The medium is recirculated in an outer circuit through a distribution tank solution preparation tank and coating trough. Means are provided for maintaining temperature and pH. The substrates are maintained in a line normal to the flow in the trough and can be rotated to ensure even coating.

Abstract: A substrate, bearing a coating having a thickness which varies in more than one direction across the surface of the substance, is prepared by a process wherein the substrate is immersed into a coating medium bath, then withdrawn in a predetermined direction and at a predetermined rate, and simultaneously pivoted at a predetermined angular velocity about an axis which is orthogonal to the direction of withdrawal.

Abstract: A large thin web having a coherent crystal morphology throughout its extent is made on a continuous basis by drawing a meniscus of the web material from a hot melt thereof onto a heated support surface which moves relative to the melt so that the liquid is distributed as a thin liquid film over that support surface. The moving support surface advances the film progressively past a chiller which establishes a chill zone at the surface of the film which cools the film material at an isothermal front or boundary therein to a temperature below the melting point of the material so that the material solidifies. Also, a crystal seeding bar is located at the chill zone which is brought into contact with the film just ahead of the front so that when the film solidifies in the chill zone it assumes the crystal morphology of the seeding bar.

Abstract: In a vehicle body processing apparatus, a process tank assembly comprises a plurality of process tanks each having a treatment liquid therein. A carrier supports the body in road position above the tanks. A rotating means rotates the carrier and the body between an upright position above the tanks and an inverted totally submerged position within the tank and then rotates back to the upright position for drainage into the tank. The carrier is separated from the body, cleaned, and returned overhead to the loading end of the apparatus. The liquid-processed body is transported in an inverted position through an oven.

Abstract: A method of intercalating large quantities of fibrous structures uses a rotatable reaction chamber containing a liquid phase intercalate. The intercalate liquid phase is controlled by appropriately heating, cooling or pressurizing the reaction. Rotation of the chamber containing the fiber sample enables total submergence of the fiber during intercalation. Intercalated graphite fibers having metal-like resistivities are achieved and are conceivably useful as electrical conductors.

Abstract: An apparatus for manufacturing atherectomy torque tubes includes a mechanism for rotating a tube liner about its longitudinal axis at a rotational velocity. A carriage is translatably positioned along the longitudinal axis. A mechanism for winding a wire about the tube liner is mounted on the carriage. A mechanism for coating the tube liner with an epoxy material is also mounted on the carriage. In a preferred embodiment, wire is wound onto the tube liner inside a reservoir of urethane epoxy bath which is moved along the tube liner. A laser sensor measures the coated tube to provide a signal representative of the final outside diameter of the tube and a computer uses this signal to control the angular velocity of the rotating tube liner and the linear velocity of the carriage which moves the wire winding and coating mechanism along the tube.

Abstract: An apparatus for glazing an article of earthenware or porcelain such as e.g. a plate or the like includes a capstan with a plurality of arms each supporting a workpiece holder for at least one glaze vessel which is rotatable about its axis and tiltable relative to the supporting arm. Before being fed to a glazing station, the article is accurately aligned and imprinted with a mark. A suction unit transfers the article from the centering station to the glaze vessel which is rotated and tilted so as to dip the article in a glaze mass. After surface drying the glaze on the article by initially holding it vertically and then horizontally, the article is transported to a transfer station for placement on a spongy belt which removes excess amount of glaze from the bottom area of the article. The glaze vessel, after being cleared by removing the plate, is refilled with fresh glaze mass in a charging station which is arranged prior to the glazing station.

Abstract: A method and apparatus for providing to an anti-rust treatment a peripheral portion a shell such as is associated with a brake booster and which comprises a pair of cylindrical members disposed in abutting relationship with each other and fastened together by a staking operation which occurs by applying a shearing action to the periphery of the abutting members at a plurality of locations. The substantially cylindrical shell is held at an angle with respect to the horizontal, and then driven for rotation. A vehicle containing an anti-rust paint is disposed below the rotating shell, and the shell is positioned so that its axis of rotation does not intersect the vessel. As the shell rotates, the shear-staked peripheral portion of the shell is successively brought into dipping relationship with the paint.

Abstract: A capsule-like medicament, method for producing such medicaments and apparatus. Such medicaments are achieved by individually dipping and drying first one end, and then the other end, of each caplet to provide a coating which is smoother and easier to swallow than an uncoated caplet. The production of these capsule-like medicaments is readily facilitated by simple and inexpensive modifications which can be made to existing empty gelatin capsule making equipment.

Abstract: The present invention is for an apparatus and method of batch type surface treatment on a car body. The car body is rolled in the bath about the horizontal and longitudinal axis of the car body.

Abstract: A method and implementing apparatus for electroless plating an optical disk causes the disk to be positioned in a container with its main surface upturned and then rotated. As the disk rotates, liquid for treating or cleaning the disk is caused to fall on the upturned main surface from a position above the disk.

Abstract: An apparatus and method achieves the submersiontype processing of silicon wafers in a manufacturing process for the fabrication of semiconductor devices therefrom. The silicon wafer is uniformly flooded with the process fluid in a manner which prevents impingement thereof during chemical processing, such as wet etching, cleaning, photoresist developing and the like. Upon flooding the silicon wafer, a gas pocket is formed between a portion of the lower surface of the wafer and an adjacent portion of vacuum chuck to which the wafer is mounted. The resulting gas pocket prevents accumulation of processed fluid therein to facilitate spin drying of the wafer.

Abstract: A device for developing treatment of a semiconductor material which is provided with a cup-shaped basin having a liquid inlet passage in its center portion and an annular flat upper portion and a chuck positioned above the basin and having a lower end surface for supporting the semiconductor material to be developed, the basin being provided on its upper portion with a ring for temporarily storing the developing liquid supplied to the upper portion of the basin, the ring having a diameter larger than the size of the semiconductor material and the passage being provided with an automatically operable valve.

Abstract: A work processing system comprising: a plurality of work processing stations or tanks arranged in a predefined manner; superstructure means suspended above the process stations; a programmable controller situated remote from said processing stations for generating command signals; crane means suspended on and translatable relative to the superstructure and to the processing stations in response to said command signals; work carrier means carried by the crane means and adapted to be suspended and supported by a respective one of the processing stations; the work carrier unit comprising a work carrier member or platform adapted to support a workpiece and further including means for rotating the work carrier member or platform about a predetermined axis thereof in response to command signals.

Abstract: Solder coating of lead of IC packages is accomplished by passing IC packages on a pallet through a solder wave. The rectangular or square IC packages are positioned so that they are tilted relative to the horizontal and rotated so that a side or adjacent sides of the package enter and exit the solder wave at an angle that is not 90.degree. or 180.degree..

Abstract: An apparatus and method for automatically forming ceramic shell molds as part of an investment casting process. The apparatus includes structure defining a plurality of processing stations which together define a process line through which set ups are conveyed and coated with cermic material. The first station includes a pickup arm assembly operative to transfer a set up from a transfer cart to a slurry tank where it is released. A transfer arm forming part of a second station engages the set up rotates it within the slurry tank for a predetermined time, after which, the slurry transfer arm transfers it to a spin-off tank and releases it. A stucco transfer arm assembly forming part of a third station engages the set up and rotates it to spin-off excess slurry solution after which the stucco transfer arm transfers it to a stucco tank and releases it.

Abstract: There is disclosed an article treating apparatus particularly apparatus for pressure-impregnating or vacuum impregnating porous articles such as metal castings. A holder for the articles or a metal basket containing them is disposed in an autoclave and can be rotated about a horizontal axis. It has a horizontal through-passageway so that articles to be treated can be simultaneously loaded at one end of the passageway and unloaded at the other end of the passageway by an indexing mechanism. The indexing mechanism has a plurality of pusher arms which can be moved laterally into the path of the articles and then moved horizontally to push the articles along rails into and out of the passageway. The holder is stopped at a predetermined rotary position in which a longitudinal slot is opposite the pusher arms so that unloading and loading may be effected simultaneously with a single movement of the indexing mechanism, a pusher arm passing completely through the slot.

Abstract: Apparatus and procedure for applying a paint or like coating to an elongated strip article using a coating head having an open-sided slot to which coating material is supplied under pressure, and a support such as a roll around which the strip is advanced past the head for receiving from the slot a layer of paint metered between the head and the strip, wherein a load is continuously exerted on the head during operation for urging the head against the applied paint layer on the strip so as to maintain a uniform metering gap between the head and the coated strip surface. The load may be exerted by devices such as air cylinders acting on the head and capable of adjustment to vary the magnitude of the load for different coating operations.

Abstract: The present invention provides a semiconductor device manufacturing apparatus which, in processing wafers with processing liquid, prevents dust contamination of a wafer surface to be processed, enables fine control of processing liquid temperature, enables the wafer surface to be processed uniformly, permits use of only a small amount of processing liquid, and can be adapted for mixed solvents. The apparatus according to the present invention comprises a cup containing the processing liquid, vacuum chuck means holding the wafer by suction on the upper surface of the wafer, and means by which the wafer surface is brought into dynamic contact with the processing liquid.

Abstract: An electroless plating bath tank with air sparging and bath heating attachments is provided with a workpiece rack on which multiple horizontal spindles bearing workpieces are rotated about their own axes while also being rotated eccentrically about a horizontal axis, so as to expose the workpiece more uniformly to the action of the bath.

Abstract: A frame 50 having box section frame members 42 is connected by spider inserts 36 and 52 at the four corners of the frame which are linked through chains 34 to four frame handling devices 14 which include a pneumatic cylinder 16 operated to lower the frame to the horizontal 50B position in the tank with the cylinders 16 then being operated to tilt the frame in the tank about three different axes (FIGS. 5-7) to insure a complete coating of all the members of the frame and the purging of air from all entrapping cavities and/or corners of the frame.

Abstract: A method of coating a container (1) including a structure defining an aperture comprises the steps of supporting the container (1) by the said structure, causing the container (1) to rotate about an axis thereof, causing the rotating container (1) to translate across the surface of a liquid coating composition (7) a portion of the container being immersed in the composition, and causing the composition to solidify upon the surface of the container. The method is particularly applicable to coating plastics bottles.

Abstract: An apparatus for coating steel objects with an alloy of zinc and aluminium. The steel objects are preheated in a furnace to within 400.degree.-950.degree. C. within a protective reducing gas, and then introduced into a zinc bath containing about 5% aluminium in a cage. After a predetermined time, the cage is raised out of the bath into a centrifuging chamber having an oxygen-free atmosphere therein.

Abstract: The apparatus is capable of being immersed in a liquid bath and supports at least two dowels or rods on which are mounted apertured discs in spaced apart relationship. Each rod has a gear fixed near one end and has a plurality of axially spaced circumferential grooves in each of which respective apertured discs are disposed. A pair of spaced wheels are provided to rotate in unison about a fixed axle. Each wheel has a plurality of radially disposed slots into which respective rods are disposed so that each dowel is capable of rotating about its own axis. The axle supports a fixed sun gear disposed near one wheel and each rod has at one end a planet gear that meshes with the sun gear whenever the respective rod is nested within a respective pair of slots on the wheels. Means are provided to rotate said pair of wheels about said axle. To prevent the rods from falling out of their respective slots as the wheels rotate, a C-shaped keeper device is disposed around each wheel and in a fixed position.

Abstract: Methods of and apparatus for coating the glass envelope and predetermined portions of the end caps of a fluorescent lamp with a coating of polymeric material including securing the end caps against displacement, subsequently, preheating the glass envelope and the predetermined portion of the end caps to a first predetermined temperature above the melting point of the polymeric material for a predetermined amount of time; subsequently, masking the electrical connecting pins and all of the end caps except the predetermined portion thereof; subsequently, exposing the glass envelope and the predetermined portion of the end caps to a fluidized bed of powder of the polymeric material for a predetermined amount of time to apply a coating of the powder to the glass envelope and to the predetermined portion of the end caps; subsequently, reheating the glass envelope and the predetermined portion of the end caps to a predetermined temperature above the melting point of the polymeric material and for a predetermined amo

Abstract: Spindled photographic film discs are coated with an ultraviolet light curable protective coating apparatus which receives a developer spindle carrying a plurality of film discs at a receiving station. Carry-in arms transfer the spindle into a coating station through a door and deposit the spindle at a location where the lower films on the stacked discs are partially submerged in a pool of coating liquid. A drive gear engages a spur gear on the spindle and slowly rotates the spindle for applying the coating evenly to the discs. Carry-over arms engage the spindle and carry it about the circumference of the drive gear, first lifting the spindle above the coating material and then causing the spindle to be spun at a relatively high rate for removing excess material from the discs. The carry-over arms thereafter transport the spindle through a second door and into an ultraviolet curing region while maintaining the rotation of the discs during curing.

Abstract: An apparatus for producing pile articles having complicated and high color tone and structure, such as artificial furs, writing brushes, brushes, etc. comprises a rotating body to which a pile article is fixed and which is rotated together with the pile article whereby centrifugal force is applied to the piles, a rotary container wherein at least one treating liquid for the above described piles is retained and at least one inner interface of the treating liquid is formed owing to the centrifugal force caused by the rotation to contact the piles with the treating liquid, and a feeding portion from which the treating liquid is fed into the rotary container and a discharging portion from which the treating liquid is discharged.

Abstract: An apparatus and method for applying an adhesive to the edge of the can by inserting the can into the adhesive to its top surface and rotating the can 360.degree. or more, then past the edge of a doctor roll to remove excess adhesive in a selected region and then advancing the cans through an induction heater in a continuous motion until the can reaches a discharge station where it is released.

Abstract: The surface treatment is carried out by employing an apparatus comprising a vessel and a holed container rotatably equipped in said vessel.Materials to be treated are filled into said holed container of said apparatus then treating liquids and/or washing liquids are charged in order into said holed container according to the treatment process and said holed container is driven to rotate thus treating liquids and/or washing liquids contact whole surface of said materials and the treatment is carried out. After the treatment, treating liquids and/or washing liquids are effectively removed from the surface of said materials by the centrifugal force accompanying with the rotation of said holed container.

Abstract: Apparatus comprising a vertically movable arm member pivoted at one end about a vertical axis and a chucking head mounted at the other distal end thereof, for engagement with and holding an apertured article, said chucking head being arranged to rotate the chucked article and whereby apertured articles being successively fed to a loading position are subjected to a revolving movement and an upward movement while being transferred to an unloading position via a working position where they are subjected to a desired treatment.

Abstract: A method of impregnating a porous article with impregnant to seal the pores thereof, which comprises placing the article in a vessel, evacuating the vessel to withdraw air from the pores, releasing the vacuum with the pores beneath the surface of a liquid impregnant in the vessel, removing excess impregnant from the vessel, washing excess impregnant from the surface of the article by supplying washing fluid to the vessel, removing the fluid from the vessel, heating the article while still within the vessel to effect curing of the impregnant within the pores, and removing the impregnated article from the vessel.

Abstract: An automatic coating system for making set-up by coating a wax pattern with a refractory material, for use in a lost wax process. The system has a set-up pickup device adapted to pickup the set-ups by one from a set-up pool, a slurry dipping device for dipping the set-up in the slurry of the refractory coating material, a sanding device adapted to deposit sand to the coated set-up and a set-up taking-out device for taking the set-up out of the system. These devices are disposed on a common circle. The system further has aset-up transportation device located at the center of the circle. The transportation device has a plurality of beams extended radially outwardly to positions of the devices on the circle and supported by a shaft which is rotatable and movable up and down. Each beam has an arm which is adapted to hold the set-up. The beams of the transportation device are cyclically moved up and down and rotated back and forth to transport the set-ups from one to the next devices disposed on the circle.

Abstract: The surface treatment is carried out by employing an apparatus comprising a vessel and a holed container rotatably equipped in said vessel.Materials to be treated are filled into said holed container of said apparatus then treating liquids and/or washing liquids are charged in order into said holed container according to the treatment process and said holed container is driven to rotate thus treating liquids and/or washing liquids contact whole surface of said materials and the treatment is carried out. After the treatment, treating liquids and/or washing liquids are effectively removed from the surface of said materials by the centrifugal force accompanying with the rotation of said holed container.

Abstract: An automatic electroplating machine has a plurality of plating barrels supported by cantilever arms on an elevator-conveyor for intermittent movement along a continuous, generally horizontal path to and through a plurality of work stations. Groups of barrels are lowered into and lifted out of a series of treating tanks located at work stations and along a rectilinear portion of the conveyor path. When the barrels are in lowered positions pinions on some of the barrels are engaged with reciprocally movable rack assemblies which oscillate the barrels in unison about horizontal axes and within the associated treating tanks.

Abstract: This invention relates to a surface coating device of bamboos including the stays having anti-corrosion, insect-prevention property and produced by said device characterizing that a nozzle having an opening permitting to freely pass natural materials such as bamboos or tree branches whose outside diameter is irregular is inserted in the resin chamber set up adjacent to the cylinder pushing out melted synthetic resin such as vinyl chloride and by passing said natural materials or the materials whose surface has been evenly coated beforehand by chemicals having adhesiveness like tar as well as anti-corrosion, insect-prevention property at a constant speed slowly rotating from backward of said nozzle, said melted resin successively fed in to said chamber adhesively coats the surface of said materials in a state of film.

Abstract: Apparatus for sputtering printing or similar type cylinders by means of r.f. sputtering in which a cylindrical metal substrate is mounted on a mandrel which is installed in a sputtering chamber. The apparatus includes targets arranged around the cylindrical substrate, the substrate comprising the anode or being mounted on the anode. The sputtering operation is arranged to apply a highly uniform coating of a photoconductive material on the substrate and the structure is arranged so that the finished cylinder can be removed from the sputtering chamber along with the mandrel and replaced by another metal cylindrical substrate on another mandrel. In this way a printing cylinder comprising a seamless thin-walled metal sleeve having a coating of photoconductive material is easily produced economically and rapidly, said coating having uniform thickness and properties throughout.

Abstract: An apparatus for edulcorating a wire coil with an edulcoration fluid is provided which has a movable cart with an upright support and a plurality of horizontal, rotatable flanged shafts for supporting and rotating the wire coil, these shafts being mounted on the upright. A hollow pipe with outlets is positioned beneath the rotatable shafts on the upright to provide edulcoration fluid against the inside of a coil on the shafts, and a plurality of hollow pipes with outlets, also connected to the upright, are positioned above the rotatable shafts for providing edulcoration fluid against the outside of the coil on the shafts. The flanges on each of the shafts are at an angle to the axis of the respective shaft and are positioned in a special spaced relationship with regard to the flanges on the adjacent rotatable shaft.

Abstract: A workpiece such as an electronic component, comprising a body and leads that project in one direction from the body, has its body coated by immersing it in a fluidized bed while the workpiece is vibrated. Immersion depth is such that the uppermost surface of the body is at or just slightly below the top surface of the fluidized bed. Vibration of the workpiece during immersion ensures a uniform thickness coating all over the body and prevents "pants legs" on the leads.

Abstract: Method and apparatus for providing a completely encircling coating of an organic polymeric material on a localized region of a glass container. At a coating station, a glass container is rotated through at least 360 degrees. During the rotation, a material application head furnishes fluid organic polymeric material to the surface of the localized region of the glass container which is to be coated. Stop members hold the application head a fixed distance from the localized region and determine the perimeters of the encircling coating and a doctoring edge of the application head helps form a uniform layer or coating of the organic polymeric material completely encircling the localized region.

Abstract: An apparatus for forming an electrically insulating semi-cured or cured in situ polymer containing material over a surface of an electrode can of an electrical device. The apparatus includes an applicator forming a film of curable polymer containing material over the can and means semi-curing or curing in situ the film to form an electrically insulating semi-cured or cured polymer containing material over the surface of the electrode can. The film is formed by contacting a surface of the electrode can with curable polymer containing material dispensed from the applicator and moving the surface of the electrode can contacted with the material over the applicator to distribute the curable polymer containing material over the surface of the electrode can as a film.

Abstract: A preheated workpiece having a surface with substantially arcuate curvature is supported by rotatable supporting means which has limited contact with said surface. Heat fusible plastic material in finely divided solid form is propelled against all parts of the surface of the workpiece, to be melted by its heat and fuse into an overall coating. During such coating, and thereafter until the material solidifies to substantial hardness, the supporting means is rotated, imparting rotation to the workpiece by its rolling contact therewith, and is cooled to maintain its temperature below the melting point of the material.

Abstract: To eliminate the manual handling of individual articles associated with loading and unloading conventional treating apparatus, a plurality of articles are simultaneously treated in the carriers which are used for batch handling prior to and subsequent to the treating operation. In a disclosed embodiment, wafer-shaped articles are held in mutually spaced substantially parallel relationship in a plurality of slots in a first carrier having an open face through which the wafers can be inserted and removed. The open face of the first carrier is abutted to the open face of an empty second carrier having at least a corresponding plurality of slots, such that the slots of the first carrier are aligned with the slots of the second carrier. The abutted carriers, with the wafers contained therein, are submersed in a treating medium and rotated about an axis running through the abutted faces of the carriers.

Abstract: In a method and apparatus for applying light sensitive materials to semiconductor slices, a plurality of semiconductor slices are supported in a spaced apart array extending along an axis. The slices are supported on knife edges positioned at circumferentially spaced points about the axis and each extending angularly both with respect to the axis and with respect to the radii of the slices so that the slices are supported by means of point contact with their edge portions. In one embodiment the knife edge comprise combs mounted in a cylindrical support fixture formed from an open material and including hingedly interconnected half cylinders. In another embodiment the knife edges are supported in a cup-shaped support fixture formed from an open material and adapted to receive semiconductor slices of varying sizes and particularly broken semiconductor slices.Light sensitive material is simultaneously applied to all of the semiconductor slices in the support fixture.