摘要:
A closed loop feedback method that continuously adjusts the lateral and skew position of a sheet includes a first sensor that is used to measure lateral sheet edge position. A second sensor measures the lateral sheet edge position at a certain distance from the first sensor. Sheet skew values can thus be calculated. Lateral and skew controllers provide outputs to lateral and skew actuators, respectively, to adjust the sheet position. A different method of registering sheets laterally and in skew enables active sheet deskew without translating the sheet in the cross-process direction. A sensor carriage position is controlled to find the sheet edge after which deskew control can start. The average value of the carriage position can then be fed in a feedforward manner to move the image location to match the average paper position. This achieves good average lateral registration and active skew control at a reduced cost.
摘要:
A method of registering sheets laterally and in skew enables active sheet deskew without translating the sheet in the cross-process direction. A sensor carriage position is controlled to find the sheet edge after which deskew control can start. The average value of the carriage position can then be fed in a feedforward manner to move the image location to match the average paper position. This achieves good average lateral registration and active skew control at a reduced cost.
摘要:
A method of registering sheets laterally and in skew enables active sheet deskew without translating the sheet in the cross-process direction. A sensor carriage position is controlled to find the sheet edge after which deskew control can start. The average value of the carriage position can then be fed in a feedforward manner to move the image location to match the average paper position. This achieves good average lateral registration and active skew control at a reduced cost.
摘要:
A method and system feeds a sheet through a media path in a process direction. When the sheet is within a sheet registration carriage of the media path, the method and system align the sheet to a predetermined lateral position within the media path. The aligning process comprises unevenly activating nips within the sheet registration carriage and moving the sheet registration carriage in a lateral direction perpendicular to the process direction. If the lateral movement distance exceeds a predetermined distance, the method and system move the sheet registration carriage toward the starting position after the nips have released the sheet, but before the sheet has passed by the nips.
摘要:
An image-to-sheet closed loop registration system tracking the image drum position and/or velocity and coordinating movement of the sheet into the transfer nip based on such information.
摘要:
An integrated printing system is provided and includes at least two generally vertically aligned image marking engines and at least two generally horizontally aligned image marking engines. The printing system further includes at least one generally horizontal interface media transport for transporting media between and to the vertically aligned and the horizontally aligned image marking engines.
摘要:
Embodiments described herein are directed to characterizing a media curler for a printing. Test curls can be imposed on media having input curls with known input values using a media curler to be characterized. The media curler can impose the test curls based on curler settings of the media curler. Resulting output values from an interaction between the test curls and the input curls can be measured and the curler settings can be characterized based on the known input values and the resulting output values so that the media curler can be configured to respond to incoming media having a known input curl by applying curler setting to achieve a desired output curl.
摘要:
A compiling unit includes a collection tray and a variable-speed compiling system adapted to operate at at least two speeds to thereby receive a sheet of media at a higher speed and register the sheet of media within the collection tray at a lower speed. A control system is adapted to selectively operate the variable-speed compiling system at the at least two speeds. A printing system having a sheet media source, at least one marking engine, such a compiling unit and such a control system is included. A method of compiling sheet media is also included.
摘要:
A compiling unit includes a collection tray and a variable-speed compiling system adapted to operate at at least two speeds to thereby receive a sheet of media at a higher speed and register the sheet of media within the collection tray at a lower speed. A control system is adapted to selectively operate the variable-speed compiling system at the at least two speeds. A printing system having a sheet media source, at least one marking engine, such a compiling unit and such a control system is included. A method of compiling sheet media is also included.
摘要:
An ink image producing machine has (a) imaging devices, including at least one ink jet print head and an image receiving station for producing an ink image on a heated substrate; (b) a substrate handling assembly including holding devices for holding supplies of substrates, and transport feeding devices for transporting and feeding substrates in a substrate direction towards the image receiving station; (c) a first substrate heating assembly located upstream of the image receiving station for initially heating each substrate being fed and transported from the holding devices; and (d) a second substrate heating assembly located downstream of the first substrate heating assembly and upstream of said image receiving station, relative to the substrate feeding direction, for controllably re-heating each substrate, initially heated by the first substrate heating assembly, to a desired ink image receiving temperature.