Loading patent…
AssigneeTektronix, Inc.
InventorsMeade M. Neal, Clark W. Crawford, Barry D. Reeves, James D. Rise
Estimating the term…
A phase-change ink transfer printing process and apparatus (10) applies a thin layer of a liquid forming an intermediate transfer surface (12) to a heated receiving surface, such as a drum (14). Then an ink-jet printhead (11) deposits a molten ink image (26) onto the heated drum where it cools to the drum temperature and solidifies. After the image is deposited, a print medium (21) is heated by a preheater (27) to a predetermined temperature and fed into a nip (22) formed between the heated drum and an elastomeric transfer roller (23) that is biased toward the drum to form a nip pressure that is about twice the yield strength of the ink image. As the drum turns, the heated print medium is pulled through the nip to transfer and fuse the ink image to the print medium. When in the nip, heat from the drum and print medium combine to heat the ink in accordance with a process window (90), making the ink sufficiently soft and tacky to adhere to the print medium but not to the drum. When the print medium leaves the nip, stripper fingers (24) peel it from the drum and direct it into a media exit path.
A method of transferring and fusing an image to a print medium in image, transfer printing from intermediate transfer surface to a final receiving substrate utilizing a process window defined by an interrelated set of parameters relating to transfer pressure, preheater temperature, intermediate transfer surface temperature, ink, and transfer speed, comprising:
An image transfer printing apparatus, comprising:
Dependencies are inferred from the claim text.