# US 2013/0152810 A1 · Anti-marking Jackets Comprised of Fluoropolymer and Methods of Using in Offset Printing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0152810 A1 - Document ID: US20130152810A1 - Status: Published application - Kind: A1 - Application number: 13/769,543 - Filed: 2013-02-18 - Published: 2013-06-20 - Earliest claimed: 2008-12-24 - Assignees: Printing Research, Inc. - Inventors: Howard W. DeMoore; Joey V. Le - Web page: https://patentgrep.com/patent/US20130152810A1 ## CPC - B23P 6/00: Restoring or reconditioning objects (straightening or restoring form of sheet metal, metal rods, metal tubes, metal profiles, or specific articles made therefrom B21D1/00, B21D3/00; repairing defective or damaged objects by casting techniques B22D19/10) - B41F 22/00: Means preventing smudging of machine parts or printed articles (B41F23/00 takes precedence) - B41F 35/00: Cleaning arrangements or devices {(in manifolding apparatus or the like B41L41/00)} - Y10T 29/49723: including reconditioning of part - B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q) - B41F: PRINTING MACHINES OR PRESSES (manifolding devices or office printing machines B41L) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract In a printing press having a transfer cylinder for transferring a freshly printed substrate, an anti-marking device is provided. The anti-marking device comprises a flexible jacket comprised of fluoropolymer to engage the freshly printed substrate as it is transferred over the transfer cylinder, the anti-marking device removably attached with free play to the transfer cylinder. In an embodiment, a base cover is installed on the transfer cylinder between the anti-marking device and the transfer cylinder. ## Claims ### Claim 1 A method of maintaining a printing press having a transfer cylinder, comprising: removing a flexible jacket from the transfer cylinder, wherein the flexible jacket is comprised of fluoropolymer; immersing the flexible jacket in a solvent to clean; attaching the flexible jacket to the transfer cylinder by a first edge of the flexible jacket; adjusting the free play of the flexible jacket; and attaching the flexible jacket to the transfer cylinder by a second edge of the flexible jacket. ### Claim 2 (depends on 1) The method of claim 1, wherein the fluoropolymer is at least one of polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), and perfluoroalkoxy (PFA). ### Claim 3 (depends on 1) The method of claim 1, wherein the fluoropolymer is polytetrafluoroethylene (PTFE). ### Claim 4 (depends on 1) The method of claim 1, further including: rinsing the flexible jacket after immersing; and drying the flexible jacket in a clothes dryer. ### Claim 5 (depends on 1) The method of claim 1, wherein the flexible jacket is woven from threads comprising fluoropolymer. ### Claim 6 (depends on 1) The method of claim 1, wherein the flexible jacket is woven from threads consisting essentially of polytetrafluoroethylene (PTFE). ### Claim 7 (depends on 1) The method of claim 1, wherein the flexible jacket is woven from threads comprised of about 99 percent polytetrafluoroethylene (PTFE) and about 1 percent polyester and carbon. ### Claim 8 A method of operating a printing press having a transfer cylinder, comprising: printing a substrate; supporting the substrate during at least a portion of the transfer of the substrate through the printing press with a flexible jacket attached to the transfer cylinder with an effective amount of free play, the flexible jacket comprised of fluoropolymer; and exposing the substrate to an artificial radiation source comprising at least one of an ultraviolet lamp and an infrared lamp. ### Claim 9 (depends on 8) The method of claim 8, wherein the fluoropolymer comprises at least one of polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), and perfluoroalkoxy (PFA). ### Claim 10 (depends on 8) The method of claim 8, wherein the fluoropolymer is polytetrafluoroethylene (PTFE). ### Claim 11 (depends on 8) The method of claim 8, wherein the flexible jacket is removably attached to the transfer cylinder. ### Claim 12 (depends on 8) The method of claim 8, wherein the radiation incident upon the flexible jacket is sufficient to raise the surface temperature of the flexible jacket to a temperature in the range from about 90 degrees Fahrenheit to about 125 degrees Fahrenheit, wherein the flexible jacket is able to withstand temperatures up to about 400 degrees Fahrenheit. ### Claim 13 (depends on 8) The method of claim 8, wherein the artificial radiation source is located less than about four feet from the flexible jacket and more than about two inches from the flexible jacket. ### Claim 14 (depends on 8) The method of claim 8, wherein the flexible jacket is woven at least partly from threads manufactured using fluoropolymer. ### Claim 15 (depends on 8) The method of claim 8, wherein the flexible jacket is woven at least partly from threads comprised of at least about 98 percent polytetrafluoro ethylene (PTFE). ### Claim 16 (depends on 8) The method of claim 8, wherein the artificial radiation source indirectly exposes the substrate. ### Claim 17 (depends on 8) The method of claim 8, wherein the artificial radiation source directly exposes the substrate. ### Claim 18 (depends on 8) The method of claim 8, wherein the artificial radiation source exposes the substrate to the artificial radiation sporadically. ### Claim 19 (depends on 8) The method of claim 8, wherein the artificial radiation source exposes the substrate to the artificial radiation substantially continuously during operation of the printing press. ### Claim 20 A method of operating a printing press having a transfer cylinder, comprising: printing a first substrate; supporting the first substrate during at least a portion of the transfer of the first substrate through the printing press with an anti-marking device comprising a flexible jacket comprised of fluoropolymer to engage the freshly printed substrate as it is transferred over the transfer cylinder and a base cover attached to the flexible jacket at two edges to promote an effective amount of free play of the flexible jacket when the anti-marking device is installed over the transfer cylinder; inserting a non-porous material between the flexible jacket and the base cover from an unattached edge of the anti-marking device; while the anti-marking device remains installed over the transfer cylinder, cleaning the flexible jacket with one of a cleaning agent and a pressroom solvent; after cleaning the flexible jacket, printing a second substrate; and supporting the second substrate during at least a portion of the transfer of the second substrate through the printing press with the anti-marking device.