2333results about "Transfer printing" patented technology

In a method of printing a transferable component, a stamp including an elastomeric post having three-dimensional relief features protruding from a surface thereof is pressed against a component on a donor substrate with a first pressure that is sufficient to mechanically deform the relief features and a region of the post between the relief features to contact the component over a first contact area. The stamp is retracted from the donor substrate such that the component is adhered to the stamp. The stamp including the component adhered thereto is pressed against a receiving substrate with a second pressure that is less than the first pressure to contact the component over a second contact area that is smaller than the first contact area. The stamp is then retracted from the receiving substrate to delaminate the component from the stamp and print the component onto the receiving substrate. Related apparatus and stamps are also discussed.

A transfer printing process that exploits the mismatch in mechanical or thermo-mechanical response at the interface of a printable micro- or nano-device and a transfer stamp to drive the release of the device from the stamp and its non-contact transfer to a receiving substrate are provided. The resulting facile, pick-and-place process is demonstrated with the assembling of 3-D microdevices and the printing of GAN light-emitting diodes onto silicon and glass substrates. High speed photography is used to provide experimental evidence of thermo-mechanically driven release.

In an aspect, a system and method for assembling a semiconductor device on a receiving surface of a destination substrate is disclosed. In another aspect, a system and method for assembling a semiconductor device on a destination substrate with topographic features is disclosed. In another aspect, a gravity-assisted separation system and method for printing semiconductor device is disclosed. In another aspect, various features of a transfer device for printing semiconductor devices are disclosed.

In a method of printing a transferable component, a stamp including an elastomeric post having three-dimensional relief features protruding from a surface thereof is pressed against a component on a donor substrate with a first pressure that is sufficient to mechanically deform the relief features and a region of the post between the relief features to contact the component over a first contact area. The stamp is retracted from the donor substrate such that the component is adhered to the stamp. The stamp including the component adhered thereto is pressed against a receiving substrate with a second pressure that is less than the first pressure to contact the component over a second contact area that is smaller than the first contact area. The stamp is then retracted from the receiving substrate to delaminate the component from the stamp and print the component onto the receiving substrate. Related apparatus and stamps are also discussed.

The present invention relates to a method for thermally printing a pre-selected dye image (45) onto a three dimensional object (16). The method involves placing an image carrier sheet (24) containing a pre-selected dye image (45) over the object (16). A flexible membrane (26) is lowered over the object (16) and the image carrier sheet (24). A vacuum is established under the membrane (26) causing the image carrier sheet (24) to conform to the shape of the object (16). The membrane (26) or image carrier sheet (24) carry flexible heating elements (36), which are heated, to thermally transfer the dye image (45) onto the object (16). The flexible heating elements (36) can be made by etching an electrical circuit in a metal foil (34) which is bonded to a film substrate (30).

An image is printed on a substrate by means of a computer driven printer using heat activated dyes, without activating the dyes during the process of printing onto the substrate. The dyes are subsequently activated by applying sufficient heat and pressure to the substrate to activate the dyes.

The present invention provides an apparatus and method for applying preselected dye images to three dimensional objects, having plastic outer surfaces, utilizing flexible carrier sheets bearing dyes in the mirror images of the preselected images, where the sheets are overlaid in registration with the objects and maintained in pressurized engagement therewith while the sheets and the objects are heated. The present invention includes a bed for receiving at least one three-dimensional object member thereon with a flexible dye bearing carrier sheet placed in registration on the object and a resiliently flexible membrane, which is positionable over the sheet on the member. A vacuum assembly of the apparatus is operable to evacuate the area between the membrane and the bed in order to draw the membrane into pressurized engagement with the flexible sheet on the member thereby drawing the flexible sheet around the various surfaces of the three dimensional object. Radiant heating elements are operable both to preheat the carrier sheet, improving its flexibility and to heat the membrane after the vacuum assembly has been actuated, whereby the dye on the sheet is applied to the surfaces of the object to produce the preselected image thereon.

A method of maintaining a rotational velocity of an imaging drum during engagement with a transfer roll in an image producing device including: forming a nip to transfer an image from the imaging drum to media when the imaging drum is in engagement with the transfer roll; maintaining a substantially constant imaging drum rotational velocity mode during engagement with the transfer roll; sensing a lead edge of portion of the media prior to entering the nip; augmenting torque assist to increase the torque of the transfer roll when the media is in the nip for a defined period; and resuming the substantially constant imaging drum rotational velocity mode while a second portion of the media is in the nip.

An image is printed on a substrate by means of a computer driven printer using heat activated dyes, without activating the dyes during the process of printing onto the substrate. The dyes are subsequently activated by applying sufficient heat and pressure to the substrate to activate the dyes.

An image is printed on a substrate by means of a computer driven printer using heat activated dyes, without activating the dyes during the process of printing onto the substrate. The dyes are susequently activated by applying sufficient heat and pressure to the substrate to activate the dyes.

A printing system configured to print an image onto a deformable cast polymer article comprising: (a) means for supporting a deformable cast polymer article in preparation for printing thereon, the means for supporting comprising a pressure platen, the deformable cast polymer comprising a finished surface to be printed on and a secondary surface; (b) an image transfer medium located contiguous with the finished surface, the image transfer medium configured to produce the image on the finished surface upon transfer of an ink image, comprising one or more inks, supported by the image transfer medium; (c) means for applying pressure to the deformable cast polymer article in the form of a deformable pressure applicator, such as a flexible membrane, the means for applying being flexible and configured to deform and conform to a surface of the deformable cast polymer article, and to cause an opposing surface of the deformable cast polymer article, under heat, to inelastically deform and conform to the pressure platen, the means for applying also being configured to cause the image transfer medium to conform to the finished surface such that substantially all of the ink image is caused to be in contact with the finished surface; and (d) means for heating at least a portion of the cast polymer to a pre-determined temperature for a pre-determined time sufficient to achieve the inelastic deformation of at least a portion of the cast polymer article, and to effectuate the transfer of the ink image to the finished surface.

An ink film construction comprising: (a) a printing substrate; and (b) at least one ink film, fixedly adhered to a top surface of the printing substrate, the ink film having an upper film surface distal to the top surface of the substrate, wherein a surface concentration of nitrogen at the upper film surface exceeds a bulk concentration of nitrogen within the film, the bulk concentration measured at a depth of at least 30 nanometers below the upper film surface, and wherein a ratio of the surface concentration to the bulk concentration is at least 1.1 to 1.

The present invention is a method of producing a printed a by printing heat activated ink solids in a non activated form onto a medium in a desired image by means of an ink jet printer. The invention is printed using ink or dye compositions comprising heat activated ink or dye solids. The ink compositions used to print the medium are solid at ambient temperature when used with phase change ink jet printers, and are emulsions when used with liquid ink jet printers such as free flow and bubble jet printers. The dye solids are printed in the desired design by means of a printer onto a substrate, which becomes the printed medium. The substrate may be paper, or it may be other material.

A stamp for micro-transfer printing includes a support having a support stiffness and a support coefficient of thermal expansion (CTE). A pedestal layer is formed on the support, the pedestal layer having a pedestal layer stiffness that is less than the support stiffness and a pedestal layer coefficient of thermal expansion (CTE) that is different from the support coefficient of thermal expansion (CTE). A stamp layer is formed on the pedestal layer, the stamp layer having a body and one or more protrusions extending from the body in a direction away from the pedestal layer. The stamp layer has a stamp layer stiffness that is less than the support stiffness and a stamp layer coefficient of thermal expansion that is different from the support coefficient of thermal expansion.