摘要:
Internally-heated external rollers transfer heat rapidly to a fuser roller in an electrostatographic printer. Stored media process set points, input image content and input media type data are used to regulate the heat transfer rate by varying the nip width between the heated external rollers and the fuser roller. The rate of heat transfer and the rate of heat transfer adjustment are sufficiently rapid that many different media weights and types may be mixed in a print run without restrictions on media run lengths, without collation requirements per run, and without productivity losses due to slowing of feed rate for heavier receivers.
摘要:
Internally-heated external rollers transfer heat rapidly to a fuser roller in an electrostatographic printer. Stored media process set points, input image content and input media type data are used to regulate the heat transfer rate by varying the nip width between the heated external rollers and the fuser roller. The rate of heat transfer and the rate of heat transfer adjustment are sufficiently rapid that many different media weights and types may be mixed in a print run without restrictions on media run lengths, without collation requirements per run, and without productivity losses due to slowing of feed rate for heavier receivers.
摘要:
A printing system includes one or more printing system components positioned opposite a moving print media. A wick assembly can be attached to a printing system component to wick condensation away from a surface of the printing system component that is opposite the moving print media. A heating element can be in contact with one or both of the wick assembly and a printing system component. A protective layer can be attached to the surface of a printing system component that is opposite the moving print media to prevent condensation from forming on the component. A vacuum assembly can be positioned opposite the moving print media to produce suction over the print media that pushes humid air or some condensation into the vacuum assembly.
摘要:
A printing system includes a printing system component and a wick assembly affixed to the printing system component. The wick assembly includes at least one textile pad for collecting condensation that forms on a surface of the printing system component. A hydrophilic coating can be disposed over the surface of the printing system component.
摘要:
A printing system includes a printing system component and a wick assembly affixed to the printing system component. The wick assembly includes at least one textile pad for collecting condensation that forms on a surface of the printing system component. A heater for heating the wick assembly can be disposed within, adjacent to, or in contact with the wick assembly.
摘要:
A digital printing system for printing on a continuous web of print media includes a printhead configured to selectively moisten at least a portion of the web of print media as the web of print media is guided through the printing system. A roller, positioned downstream from the printhead, contacts the print media and causes the print media to wrap around a portion of the roller as the print media moves past the roller. The roller, having an axis of rotation, includes a pattern of recesses and ridges positioned along the axis of rotation of the roller. A second section of the roller is located between a first section of the roller and a third section of the roller as viewed along the axis of rotation. The roller includes a profile as viewed along the axis of rotation in which the diameter of the ridges located in the first section of the roller and the diameter of ridges located in the third section of the roller are greater than the diameter of the ridges located in the second section of the roller.
摘要:
A method of moving a continuous web of print media includes providing a roller having an axis of rotation. The roller includes a pattern of recesses and ridges positioned along the axis of rotation of the roller. A second section of the roller is located between a first section of the roller and a third section of the roller as viewed along the axis of rotation. The roller includes a profile as viewed along the axis of rotation in which the diameter of the ridges located in the first section of the roller and the diameter of ridges located in the third section of the roller are greater than the diameter of the ridges located in the second section of the roller. A web of print media is caused to contact and wrap around a portion of the roller as the web of print media moves past the roller.
摘要:
A method of printing includes providing a printhead and providing a roller positioned downstream from the printhead. The printhead is used to selectively moisten at least a portion of the web of print media as the web of print media is guided through the printing system. The print media is caused to contact and wrap around a portion of the roller as the print media moves past the roller. The roller, having an axis of rotation, includes a pattern of recesses and ridges positioned along the axis of rotation of the roller. A second section of the roller is located between a first section of the roller and a third section of the roller as viewed along the axis of rotation. The roller includes a profile as viewed along the axis of rotation in which the diameter of the ridges located in the first section of the roller and the diameter of ridges located in the third section of the roller are greater than the diameter of the ridges located in the second section of the roller.
摘要:
A digital printing system for printing on a continuous web of print media includes a printhead configured to selectively moisten at least a portion of the web of print media as the web of print media is guided through the printing system. A roller, positioned downstream from the printhead, contacts the print media and causes the print media to wrap around a portion of the roller as the print media moves past the roller. The roller, having an axis of rotation, includes a pattern of recesses and ridges positioned along the axis of rotation of the roller. A second section of the roller is located between a first section of the roller and a third section of the roller as viewed along the axis of rotation. The roller includes a profile as viewed along the axis of rotation in which the diameter of the ridges located in the first section of the roller and the diameter of ridges located in the third section of the roller are greater than the diameter of the ridges located in the second section of the roller.
摘要:
Often times the glossing process results in an image artifact consisting of locally lighter image a fixed distance from the lead edge as a print is glossed. This artifact is most visible in areas of medium but consistent image. The present invention provides methods for reducing this artifact.