Abstract:
A tandem system of metering and donor rolls is used to apply two different adhesives to a fully adhesive backed multilayer sheet to produce variably distributed adhesives and properties. Each of the two adhesives is unique and is cured differently to create a layer of adhesive that has differing adhesive properties on the sheet. A clear adhesive is applied to a top portion of cards before they are cut from the sheet and has a higher tackiness than the adhesive applied to the rest of the cards on the sheet in order to reduce glue buildup on blades cutting the cards from the sheet.
Abstract:
A system for manufacturing a three-dimensional object facilitates the removal of support material from the object. The system includes a controller configured to move a platen to position the object at a position opposite a microwave radiator and then operate the microwave radiator to change the phase of the support material from solid to liquid. The controller either monitors the expiration of a predetermined time period or a temperature of the object to determine when the microwave radiator operation is terminated. The microwave radiation does not damage the object because the support material has a dielectric loss factor that is greater than the dielectric loss factor of the object.
Abstract:
A printer includes a printhead assembly and a dryer. A transport mechanism conveys the printed media in a downstream direction between the printhead assembly and a dryer and between the dryer and an output device. The transport mechanism includes an electric field-generating transport member. The transport member includes a continuous belt supported by rollers. The belt is driven to transport the printed media on an upper surface of the belt. The belt includes an electrically-insulating inner layer and an electrically-insulating outer layer. First and second sets of electrical conductors are positioned intermediate the inner and outer layers. Electrical conductors in the second set are grounded and alternate with electrical conductors in the first set, A charging unit selectively applies a voltage to only a subset of the electrical conductors in the first set at a time, to electrostatically attract the printed media to the upper surface of the belt.
Abstract:
An object surface treatment system facilitates the treatment of articles of manufacture before they are printed. The system includes a chamber having walls and a lid configured to close the chamber, a flexible member mounted to the lid of the chamber, a vacuum source operatively connected to an interior volume of the chamber, and a plurality of actuators. A controller is configured to operate the actuators and vacuum source to move the applicator to apply a chemical to the flexible member, move the lid to close the chamber, produce a vacuum within the chamber and move a portion of the surface of the flexible member into engagement with a surface of an object within the chamber, cease operation of the vacuum source to enable the flexible member to return to a position adjacent the lid, and remove the lid from the chamber for removal of the object from the chamber.
Abstract:
A universal object holder device for securing 3-D objects for printing on the objects includes one or more ball shaped conformable grippers filled with irregular-shaped granular material with the one or more ball shaped conformable grippers each possessing an integrated vacuum gripper extending through an outer surface thereof. The combination of ball and vacuum gripper enables the universal object holder device to pick up a wider range of objects including those whose diameter is larger than the diameter of each gripper ball.
Abstract:
A printhead maintenance module is configured as a replaceable unit. The module includes a frame, at least two rollers detachably mounted within the frame, at least two electric motors, a platen, an optical sensor, and a controller. Each electric motor is operatively connected to one of the rollers in a one-to-one correspondence. The controller is configured to operate one of the electric motors to rotate one of the rollers to move media from a position opposite a printhead where a test pattern is printed on the media to a position opposite the optical sensor, receive image data of the printed test pattern generated by the optical sensor, and identify inoperative ejectors with reference to the image data of the test pattern.
Abstract:
A method operates a three-dimensional object printer for production of cylindrical-shaped objects. The method uses with a controller to operate an actuator operatively connected to a cylindrical member to rotate the cylindrical member within at least two supports, operate at least two printheads supplied with different materials to form portions of layers on the rotating cylindrical member with the different materials supplied to the at least two printheads, and operate at least one other actuator operatively connected to the at least two printheads and a curing device to move each of the printheads and the curing device independently of one another in a bidirectional radial direction with reference to a center of the rotating cylindrical member. This operation enables the curing device to be positioned to modify the layers formed on the rotating cylindrical member while the cylindrical member is rotating within the at least two supports.
Abstract:
A system for manufacturing a three-dimensional object facilitates the removal of support material from the object. The system includes a controller configured to move a platen to position the object at a position opposite a microwave radiator and then operate the microwave radiator to change the phase of the support material from solid to liquid. The controller either monitors the expiration of a predetermined time period or a temperature of the object to determine when the microwave radiator operation is terminated. The microwave radiation does not damage the object because the support material has a dielectric loss factor that is greater than the dielectric loss factor of the object.
Abstract:
A method of forming a three-dimensional printed object having a printed surface image includes ejecting drops of a build material to form the three-dimensional printed object with a plurality of layers of build material and at least one layer of a transparent material. The method operates ejectors to form a printed image with a marking agent so the printed image can be viewed through the at least one transparent layer. A leveler is applied to a surface of the layer of transparent material but not to the printed image.
Abstract:
A mobile cart that moves through a three-dimensional object printing system includes a first member having a pair of surface that slide along a pair of tracks, a receiver mounted to the first member that moves the cart along the tracks, and a planar member that has a surface for forming a three-dimensional object, and that is connected to the first member. The planar member and the first member are configured to enable an ejector head positioned opposite the track to pass between the planar member and the first member as the cart moves along the track.