Abstract: The invention relates to a device for printing sheets of printing substrate (02), having a first printing nip (12) which is formed between a first cylinder (19; 19*) that acts as a transport cylinder (19; 19*) and a second cylinder (18), and in which the printing substrate sheets (02) can be printed on one or on both sides with one or more collected print image segments, and having a second printing nip (11) lying downstream in the printing substrate path, which printing nip is disposed at a level lying below the first printing nip (12) and is formed between a third cylinder (17) that acts as a transport cylinder (17) and a fourth cylinder (16), and in which the printing substrate sheets (02) can be printed on one or on both sides with one or more collected print image segments, wherein the printing substrate sheets (02) can be conveyed via at least one rotating transport means (33; 38; 39) along a transport path from the cylinder (19; 19*) that acts as a transport cylinder (19; 19*) of the first printing nip

Abstract: An image forming apparatus includes a belt, a first process unit, a second process unit, and a controller configured to form a toner image based on a first pattern on a first photoconductive body of the first process unit. In addition, the controller is configured to transfer the toner image onto the belt, form an electrostatic latent image based on a second pattern on a second photoconductive body of the second process unit such that the electrostatic latent image formed on the second photoconductive body positionally coincides with the toner image transferred onto the belt in a contact position where the second photoconductive body contacts the belt, and convey the electrostatic latent image formed on the second photoconductive body to the contact position without developing the electrostatic latent image with toner.

Abstract: An apparatus for activating a chemistry disposed upon a target structure includes a handle; a structure contacting element rotatably attached to the handle and adapted to roll without slipping upon a target structure; and a radiant energy source having an emissive outlet at least partially within the structure contacting element wherein said contacting element is at least partly transparent or translucent to said radiant energy.

Abstract: A flexible and continuous substrates-conveying sheet has a plurality of to be processed substrates disposed on or in it. A nondestructive transferring unit includes a plurality of first transferring rolls and a plurality of second transferring rolls. The first transferring rolls make contact with a first surface of the substrates-conveying sheet where that surface can have electrostatically-induced charge formed thereon. Each of the first transferring rolls includes a first central portion charged with a positive electric charge and a first outer portion surrounding the first central portion. The second transferring rolls make contact with the first surface of the substrates-conveying sheet. The second transferring rolls are disposed alternately with the first transferring rolls. Each of the second transferring rolls includes a second central portion charged with a negative electric charge and a second outer portion surrounding the second central portion.

Abstract: An aliphatic polyester film is obtained by melt-extruding an aliphatic polyester as a film, controlling the entrained air stream between a casting drum and the film while inhibiting the variations of the film edge portion landing points on the casting drum, and subsequently bringing the film into contact with the casting drum over the entire width of the film.

Abstract: A flexible and continuous substrates-conveying sheet has a plurality of to be processed substrates disposed on or in it. A nondestructive transferring unit includes a plurality of first transferring rolls and a plurality of second transferring rolls. The first transferring rolls make contact with a first surface of the substrates-conveying sheet where that surface can have electrostatically-induced charge formed thereon. Each of the first transferring rolls includes a first central portion charged with a positive electric charge and a first outer portion surrounding the first central portion. The second transferring rolls make contact with the first surface of the substrates-conveying sheet. The second transferring rolls are disposed alternately with the first transferring rolls. Each of the second transferring rolls includes a second central portion charged with a negative electric charge and a second outer portion surrounding the second central portion.

Abstract: A transport system for transporting magnetic tape includes at least one roller for guiding the magnetic tape having at least one electrode and a controller being configured to apply a voltage to the at least one electrode so as to produce a force of attraction between the magnetic tape and the at least one electrode.

Abstract: A transport system for transporting magnetic tape includes at least one roller for guiding the magnetic tape having at least one electrode and a controller being configured to apply a voltage to the at least one electrode so as to produce a force of attraction between the magnetic tape and the at least one electrode.

Abstract: A system for flexing a web is disclosed. The web passes over two co-rotating members, such as rollers or belts, which are separated by a small adjustable gap. The web travels around the first rotating member, is peeled off in the vicinity of the gap, bent back on itself in a small radius and reattached on the second co-rotating member. The location of the small radius is fixed with a closed loop control system sensing the radius location and controlling the relative velocity of the two members. Strain in the web is adjusted with the size of the small radius, which is controlled by the adjustable gap and radius location.

Abstract: An inkjet recording apparatus for providing a high-quality image wherein a recording medium is thoroughly sucked by a conveyance belt and is accurately conveyed, thereby saving much time and effort. A conveyance belt 7 for supporting and conveying a recording medium 4 is provided, and an electrostatic generator 10 is installed to generate electrostatic force for sucking the recording medium 4 and to supply electrostatic force to the conveyance belt 7, wherein the conveyance belt 7 is designed in such a way that at least the recording medium contact surface is adhesive.

Abstract: Apparatus for forming a paper or board web made from fibers in which the web is treated with calcium hydroxide and then with carbon dioxide gas so as to form calcium carbonate.

Abstract: Method and assembly for forming a paper or board web and a product made using the method. According to the method, the web (11) is made from fibers and then the web (11) is treated with pigment particles. The web is treated with microscopic pigment particles whose average size is so small as to permit the particles to adhere to each other by van der Waals forces. The particles are transferred to the web and adhered thereto advantageously using an ion-blast technique.

Abstract: An apparatus for applying a banderole around one or a plurality of products creating an electrostatic attraction between the band material being supplied and the conveyor unit. The conveyor unit is connected to earth potential, and electrodes are positioned in the vicinity of the trajectory to be followed by the band material.

Abstract: Method and apparatus for guiding a web of paper or board or, alternatively, an edge strip sheared therefrom, in a paper machine or finishing equipment, the method being particularly suited for threading the web tail or edge strip through the machine in conjunction with a production shutdown or after a web break. According to the invention, the web (6) or its tail sheared from the web so as to form an edge strip is supported electrically by means of taking surfaces or electrodes (3, 5) disposed on opposite sides of the web (6) to different potentials. Particularly advantageously, the web (6) or the edge strip can be adhered to a roll (16), a belt (7) or a wire by taking said support element to a lower potential and disposing a higher-potential electrode (5) or a number of electrodes to the opposite side of the web.

Abstract: The invention provides a continuous medium printing apparatus which can exert a transporting force to act upon a continuous medium without additional provision of a new tractor mechanism or some other transport mechanism. In the continuous medium printing apparatus, upon automatic loading of a continuous medium, a control section controls a charging operation of a charging section so that a leading end portion of the continuous medium may be electrostatically attracted to an image forming drum. The image forming drum to which the continuous medium is attracted is rotated in a printing transporting direction to exert a transporting force to act upon the continuous medium to transport the continuous medium in the printing transporting direction. The present invention is applicable to an apparatus which prints on a continuous medium such as continuous recording paper (continuous paper), for example, by electrophotography.

Abstract: A method and apparatus for applying a uniform electrostatic force to a web moving between a pair of electrodes to create an electron wind that urges the web toward one of the electrodes controls the current forming the electron wind to maintain the current and the wind force substantially constant even though impedance may vary. The method may be used to provide a hard nip, to adjust tension, to spread and/or to smooth a coating, to remove curl, and to cure a coating.

Abstract: A method and apparatus for applying a uniform electrostatic force to a web moving between a pair of electrodes to create an electron wind that urges the web toward one of the electrodes controls the current forming the electron wind to maintain the current and the wind force substantially constant even though impedance may vary. The method may be used to provide a hard nip, to adjust tension, to spread and/or to smooth a coating, to remove curl, and to cure a coating.

Abstract: A method and apparatus for applying a uniform electrostatic force to a web moving between a pair of electrodes to create an electron wind that urges the web toward one of the electrodes controls the current forming the electron wind to maintain the current and the wind force substantially constant even though impedance may vary. The method may be used to provide a hard nip, to adjust tension, to spread and/or to smooth a coating, to remove curl, and to cure a coating.

Abstract: An optical tape cartridge is disclosed that is suitable for playing by an optical tape player. The tape player provides the cartridge with a voltage supply capable of supplying the optical tape with a relatively high voltage. The tape cartridge includes a sealed cartridge housing and first and second tape reels that are disposed within and freely rotatable in either direction within the housing. The reels act as tape supply and tape take up reels. Also included in the cartridge is an optical tape that has a first surface on an optically recordable side. The tape is wound on and couples the two reels with a tape segment. The tape segment is positioned with the optically recordable side facing outwardly from each of the reels. The tape includes a conductive layer that extends substantially the length of the optical tape. The conductive layer is grounded at least one end. The housing includes a sealed window positioned on a housing surface that is located across a portion of the tape segment.

Abstract: There is disclosed an apparatus and method for bonding a sheet material to an elongated base material, in which the sheet material is transferred by a transferring device towards the base material, and the sheet material is bonded by a bonding device to the base material. A static electricity generating device is attached to the bonding device for generating static electricity on the sheet material to cause the sheet material to adhere to the bonding device, so that the sheet material is prevented from falling from the bonding device prior to the bonding step. Furthermore, an apparatus and method for manufacturing a flexible flat cable, applying the above bonding apparatus and method is also disclosed. In this apparatus and method, a pair of insulating tape sheets are transferred towards electric conductors.

Abstract: A calender for material webs of paper or the like comprises at least one pressing gap. At least one temperature controlled tempering roller is disposed adjacent to the gap. A charging device is disposed adjacent to the gap. The charging device electrostatically charges the material web before the material web contacts the tempering roller.

Abstract: There is disclosed an apparatus and method for bonding a sheet material to an elongated base material, in which the sheet material is transferred by a transferring device towards the base material, and the sheet material is bonded by a bonding device to the base material. A static electricity generating device is attached to the bonding device for generating static electricity on the sheet material to cause the sheet material to adhere to the bonding device, so that the sheet material is prevented from falling from the bonding device prior to the bonding step. Furthermore, an apparatus and method for manufacturing a flexible flat cable, applying the above bonding apparatus and method is also disclosed. In this apparatus and method, a pair of insulating tape sheets are transferred towards electric conductors.

Abstract: A device for increasing heat transmission to the cooling cylinders in rotary-offset machines in order to cool a web of printed and dried stock. One or more charging electrodes are positioned where the web comes into contact with the cooling cylinders.

Abstract: An electrophotographic printer is provided with: a photosensitive drum; a feeding device which feeds a continuous recording sheet; a transfer device which transfers a toner image formed on the photosensitive surface of the drum onto the sheet; a cleaning device which removes residual developer from the photosensitive surface; and a photographic fixing device which fixes the toner image to the sheet. The feeding device includes an endless belt which is located on the downstream side of the drum with reference to the sheet-feeding direction and which travels in one direction. The feeding device also includes a charger which electrically charges the endless belt, so as to allow the sheet to be electrostatically attracted on the endless belt.

Abstract: An image forming apparatus includes a movable image carrying member, a latent imager for forming a latent image on the image carrying member, a developer for developing the latent image by a toner, a transferrer for transferring a toner image on the image carrying member formed by the developer to an image supporting member at a transfer position, a carrier for carrying the image supporting member and for conveying the image supporting member to the transfer position in order to perform the transfer, and an adsorption device for causing the image supporting member to be electrostatically adsorbed onto the carrier by supplying the image supporting member with electric charges, a detector for detecting a kind of an image supporting member to be adsorbed, and a controller for controlling an electric-charge supply amount by the adsorption device according to the kind of image supporting member detected by the detector.

Abstract: In an apparatus for conveying dielectric sheets used in copying machines, etc., sheets are held by electrostatic adhesion on the surface of a conveyor when such surface is electrically charged and thus conveyed by the conveyor, wherein a dielectric layer consisting of a dielectric material and electrode parts consisting of a conductive material, which are electrically connected to portions of the dielectric layer and grounded, are provided adjacent to each other on an adhesion surface of the conveyor.

Abstract: A paper sheet transporting method comprises a step of superposing a paper sheet on a reinforcing sheet and a step of affording an electrostatic attractive force between the sheets due to electrostatic charges given thereto. The reinforcing sheet is made of a substance selected from plastics that are of a highly insulating nature and retain the electrostatic charge for a long period of time so as to have a remaining attractive force. A step of gripping the thus electrostatically charged sheets between a pair of transporting rollers is carried out so as to transport the sheets in a tangential direction of the rollers while the sheets are still sticking to each other. The paper sheet is transported by the reinforcing sheet to a work station therefor without producing any deformation or torsion, and the paper sheet is removed from the reinforcing sheet after being processed at the work station.

Abstract: A conveyor surface composed of a single belt, a plurality of belts or of other structures such as a plurality of panels or other moving surface, or a fixed surface over which sheets of non-conductive material as paper or textiles can be caused to travel or can slide. The surface is composed of two sets of areas, intermingled in one of several ways, the two sets of areas being of material of opposite electrostatic properties (spaced apart on the triboelectric scale) so that when a sheet is conveyed the two sets of areas develop opposite electrostatic reaction to the sheet to give an overall zero or near-zero electrostatic resultant force on the sheet or other item being conveyed.

Abstract: A method of winding a continuously moving web, such as a flexible polymer film, by forming leading web edges and contacting them in sequence with a number of cores for adhesion thereon so as to start winding consecutive web portions onto the cores; when a web portion of a predetermined length has been wound onto a given core, the web is cut to form both the trailing edge of the wound web portion as well as the leading edge of the next web portion; instead of using a conventional sticky material, such as an adhesive tape, for adhesion of each leading edge of the web on the corresponding core for initiating winding thereof an electrostatic potential difference is provided between the core surface and the leading edge so that the latter will be caused to electrostatically adhere to the core surface.

Abstract: A linear accelerator system for linearly advancing an electrically conductive, elongate workpiece, such as tubing, along its longitudinal axis toward a cutoff station or the like includes a helically configured electrical coils concentrically disposed around the workpiece for inducing an electromagnetic field which imposes an axial force on the workpiece. An adjustable stop assembly engages one end of the workpiece to allow selection of the length to be cut. A switch operated by the stop assembly produces a first control signal for controlling a relay which deenergizes the coil; the relay reenergizes the coil in response to a second control signal produced by another switch which senses the completion of the cutoff operation. Sleeves removably mounted on the coil to accommodate workpieces having various diameters. In lieu of the stop assembly, a length encoder may be optionally employed in combination with the accelerator or a separate retarding device to control feed length.

Abstract: An electrostatic field equal to or greater than a predetermined magnitude is established between the ends of a multiplicity of conductive bristles and a stationary conductive reference surface spaced from the end of the bristles for the puspose of rapidly arresting and/or preventing movement of insulative material having a portion thereof located in the electrostatic field established between the bristle ends and the reference surface and subsequently releasing the material by applying a voltage of opposite polarity to neutralize the force of the electrostatic field, arresting movement of the material.

Abstract: An electrostatic clutch operable by the Johnsen-Rahbek effect, which may be used to operate, e.g., a print hammer device, is described, said clutch comprising a rotatable drum and a band engagable therewith, wherein the engagable surface of the drum is a semiconductive surface prepared by sputtering or vapor depositing a layer of substantially pure silicon carbide onto a conductive substrate.

Abstract: In superposing a copy web and a photosensitive member one over another and transferring a toner image of the copy web by transfer printing from the photosensitive member carrying a toner image of an original formed by following the steps of charging the photosensitive member, exposing the photosensitive member to an optical image of the original to form an electrostatic latent image thereon and developing the electrostatic latent image, one of the copy web and the photosensitive member is driven and the other is driven by the frictional force and electrostatic attractive force, so that relative movement of the photosensitive member and the copy web can be avoided while they are in contact with one another.

Abstract: A method of causing a vinyl resin blanket to adhere to a silicone belt during removal of a printing transfer sheet by applying a corona discharge to the belt.

Abstract: A method of and a device for applying an enlacing tape around an object, in hich the tape is taken along its path around the object to be enlaced by an endless conveyor belt by its being held urged against said belt and at the same time is fed by a tape feeding device at the speed of the belt during the full period of its movement around the object.

Abstract: An apparatus for transporting a recording medium, such as transparent electrophotographic film, which has a conductive layer, from a supply to a take-up roll. The apparatus includes a drive roller that has a conductive ring. The conductive layer of the film is maintained at a desired potential, generally ground, and a different potential is applied to the conductive ring of the drive roller. When the film contacts the periphery of the drive roller, an electrostatic attractive force is developed between the conductive ring of the drive roller and the conductive layer of the film, thereby allowing the drive roller to transport the film without slip.

Abstract: Webs such as thermoplastics films are spliced together by electrostatic charges while moving at equal speeds. Particularly useful in the production of thermoplastics such as polyethylene terephthalate films and in a preferred embodiment facilitates the threading of the film after a malfunction, e.g., splitting in the stenter. The production web is fed to a dump while splicing and rethreading is effected by feeding a leader web through a subsequent stage of the apparatus, e.g., to a wind-up device. The leader web is fed into the wind-up at the same speed as the production web passing to dump and the webs are spliced together by electrostatic charges. The web passing to dump and the feed of the leader web are severed in that order.

Abstract: This specification discloses an improvement in a mechanism for transferring the image on an image-bearing member onto a continuous transfer medium by bringing said transfer medium into contact with the image on the image-bearing member. The mechanism of the prior art has been provided with tractors disposed upstream and beyond the image transfer section for conveying the continuous transfer medium. However, the drive timing between these two tractors have been extremely difficult to provide and the drive control mechanism has been very complex. In addition, a control system for the starting of image transfer has been required and these control systems have been very cumbersome. The invention simplifies the image transfer mechanism by using a conveyor capable of conveying the transfer medium by slidably holding the same, and ensures stable conveyance of the transfer medium.

Abstract: AC electrostatic-pinning for the casting and quenching of polymeric film, especially polyethylene terephthalate film.

Abstract: In an electrostatographic copying system wherein a toner image is transferred from an original image support surface to a copy surface by an electrically biased transfer member generating a transfer field, the transfer field is tailored by providing a photoconductive layer in the transfer area, which layer is illuminated, to render it conductive, in the nip and post-nip areas, but not in the pre-nip area. Belt transfer systems are disclosed utilizing this arrangement. Also disclosed is a copy sheet tacking station having a charging device and a source of illuminaton which are simultaneously activated to tack a copy sheet to the belt.

Abstract: Method for charging and forwarding a group of filaments to a web formation zone wherein an attenuator forwards the group of filaments along a path into impingement with a target electrode positioned downstream from the attenuator and in the filament path, a charging electrode being positioned to cooperate with the target electrode to form a filament-charging electric field at the location where the filament group impinges and is being spread by the target electrode. The filaments are advanced in such a manner that the filaments are in a bundle configuration prior to contact with the target electrode and are free to spread from the bundle configuration to a fan configuration as they pass through and are charged by the electric field.

Abstract: A roller having an outer textured cylindrical surface applies, by means of a constant current, a non-uniform charge pattern over the surface of a sheet of material such as, for example, sheets of paper or plastic as used in xerographic transparencies and/or over the surface of a conveying structure, such as a conveying belt, which moves the sheet material to, through, and/or beyond a xerographic transfer zone. The charge applied over the sheet material is of a polarity opposite to that of the charge applied to the conveying structure so that an electrostatic tacking force holds the sheet material on or adheres the sheet material to the conveying structure. Preferably the charge is applied over the surfaces of the sheet material and conveying structure which face each other.

Abstract: An electrostatographic copying system in which an image is formed on an imaging surface and transferred at a transfer station to a copy sheet, where the copy sheet is electrostatically transported through the toner transfer station on a belt. As the sheet is loaded onto the belt, skewed spaced fingers hold it against the belt while a corona charge is applied through the fingers to tack the sheet to the belt.

Abstract: An electrostatic copying machine comprises a photosensitive screen having a number of fine openings therein, means for forming on the screen a primary electrostatic latent image corresponsing to an original image, an electrostatic attracting device for electrostatically attracting a recording material and moving said recording material in facing relationship with the surface of the screen on which the latent image is formed, a device for supplying the recording material to the electrostatic attracting device, and means for forming a secondary electrostatic latent image on the recording material conveyed by the attracting device.