Patents by Inventor Adam Woolfe
Adam Woolfe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9216574Abstract: In an ink jet printer (2), where there is relative movement between a print carriage (4) and a print table (6) to print on to a substrate mounted on the table (6), the gradient of the print table at each position of the print carriage (4) is used to produce a compensated position of the print carriage (4), and printing data is sent to the print head according to the compensated position instead of the actual position. This delays or advances the release of ink, to compensate for the difference in the time taken for the ink to reach a substrate mounted on the print table (6) when the print gap between print heads and print table (6) is not constant.Type: GrantFiled: June 15, 2012Date of Patent: December 22, 2015Assignee: Inca Digital Printers LimitedInventors: Stephen George Tunnicliffe-Wilson, Adam Woolfe, Stephen Douglas, Nicholas John Campbell
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Patent number: 9193183Abstract: A multipass large format flat bed inkjet printer (1) for printing an image on a substrate is described. In examples described, the printer (1) has a print carriage (8) for supporting an array of printheads (18) adjacent the substrate (6) during printing; a bed (4) for supporting the substrate (6) during printing; and a movement mechanism (5) for providing relative movement of the print carriage (8) and the substrate (6) in a print direction during a print pass. The print carriage (8) is such that the width of the array of printheads (18) transverse to the print direction is at least substantially the full width of the image. in examples described, the printheads (18) provide an array of nozzles (22) which is substantially continuous across the array of printheads (18).Type: GrantFiled: October 10, 2014Date of Patent: November 24, 2015Assignee: Inca Digital Printers LimitedInventors: Adam Woolfe, Stephen George Tunnicliffe-Wilson, William Ronald Stuart Baxter
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Publication number: 20150022604Abstract: A multipass large format flat bed inkjet printer (1) for printing an image on a substrate is described. In examples described, the printer (1) has a print carriage (8) for supporting an array of printheads (18) adjacent the substrate (6) during printing; a bed (4) for supporting the substrate (6) during printing; and a movement mechanism (5) for providing relative movement of the print carriage (8) and the substrate (6) in a print direction during a print pass. The print carriage (8) is such that the width of the array of printheads (18) transverse to the print direction is at least substantially the full width of the image. in examples described, the printheads (18) provide an array of nozzles (22) which is substantially continuous across the array of printheads (18).Type: ApplicationFiled: October 10, 2014Publication date: January 22, 2015Inventors: Adam Woolfe, Stephen George Tunnicliffe-Wilson, William Ronald Stuart Baxter
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Publication number: 20140184682Abstract: In an ink jet printer (2), where there is relative movement between a print carriage (4) and a print table (6) to print on to a substrate mounted on the table (6), the gradient of the print table at each position of the print carriage (4) is used to produce a compensated position of the print carriage (4), and printing data is sent to the print head according to the compensated position instead of the actual position. This delays or advances the release of ink, to compensate for the difference in the time taken for the ink to reach a substrate mounted on the print table (6) when the print gap between print heads and print table (6) is not constant.Type: ApplicationFiled: June 15, 2012Publication date: July 3, 2014Applicant: INCA DIGITAL PRINTERS LIMITEDInventors: Stephen George Tunnicliffe-Wilson, Adam Woolfe, Stephen Douglas, Nicholas John Campbell
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Publication number: 20100289852Abstract: A multipass large format flat bed inkjet printer (1) for printing an image on a substrate is described. In examples described, the printer (1) has a print carriage (8) for supporting an array of printheads (18) adjacent the substrate (6) during printing; a bed (4) for supporting the substrate (6) during printing; and a movement mechanism (5) for providing relative movement of the print carriage (8) and the substrate (6) in a print direction during a print pass. The print carriage (8) is such that the width of the array of printheads (18) transverse to the print direction is at least substantially the full width of the image. In examples described, the printheads (18) provide an array of nozzles (22) which is substantially continuous across the array of printheads (18).Type: ApplicationFiled: April 23, 2008Publication date: November 18, 2010Applicant: INCA DIGITAL PRINTERS LIMITEDInventors: Adam Woolfe, Stephan George Tunnicliffe-Wilson, William Ronald Stuart Baxter
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Patent number: 6941006Abstract: A method for calibrating the scan amplitude of an electron beam lithography instrument by determining the position of a feature within the scan. The method is effective at the operating frequency of the scan and using a limited bandwidth video signal including the steps of determining the reference feature to be an edge over which the video signal rises abruptly from a background level to a white level. The method turns the beam on only over a short region of the scan and represents the degree of overlap between the beam on portion of the scan and the white part of the feature as the total video signal accumulated in that scan.Type: GrantFiled: March 4, 1999Date of Patent: September 6, 2005Assignee: DuPont Photomasks, Inc.Inventors: Michael J. Penberth, Graham S. Plows, Adam Woolfe
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Patent number: 6288406Abstract: The approach taken to provide variable writing speeds consists of the following: (1) Software in the Job Control subsystem that Identifies the minimum and maximum valid writing speeds, given the resist sensitivity, maximum beam current density, and requested write address size. if the variable writing speed option is enabled, Job Control selects the maximum valid speed. (2) Software in the Pattern Data Conversion subsystem that determines the number of stripes of pattern figure data to combine into each output bitmap for the selected writing speed. (3) Hardware in the Timing Logic Board to clock bitmap data to the serializer at the desired frequency.Type: GrantFiled: March 4, 1999Date of Patent: September 11, 2001Assignee: DuPont Photomasks, Inc.Inventors: Michael J. Penberth, Graham S. Plows, Adam Woolfe
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Patent number: 6278124Abstract: An electron beam blanking method and system for selectively interrupting the flow of electrons during an electron beam lithographic process minimizes electron beam movement during blanking as the electron beam reaches a target lithographic mask. A first deflection plate pair deflects electrons flowing in the electron beam in the direction of the target lithographic mask. The first deflection plate pair includes a first tapered gap that is formed so that electrons which enter the first tapered gap before the initialization of a blanking voltage experience progressively greater electric field as they pass through the plates for controlling the cumulative deflection as the electrons travel through the first deflection plate pair.Type: GrantFiled: March 3, 1999Date of Patent: August 21, 2001Assignee: DuPont Photomasks, IncInventors: Michael J. Penberth, Graham S. Plows, Adam Woolfe