Abstract: A printing system includes one or more lineheads that jet ink onto a first side of a print media. At least one roller supports a second side of the print media as the print media is transported through the printing system. A roller deformation adjustment mechanism abuts at least one roller and is configured to apply a force to the roller to deform the roller. The deformation of the roller compensates for web skew by changing the relative timing of ink flight times from the linehead to the first side of the print media. The linehead can be disposed on a movable support. The printing system can also include one or more linehead skew adjustment mechanisms configured to move the movable support to adjust a skew of the linehead.

Abstract: A printing system includes one or more lineheads that jet ink onto a first side of a print media. At least one roller supports a second side of the print media as the print media is transported through the printing system. A roller deformation adjustment mechanism abuts at least one roller and is configured to apply a force to the roller to deform the roller. The deformation of the roller compensates for web skew by changing the relative timing of ink flight times from the linehead to the first side of the print media. The linehead can be disposed on a movable support. The printing system can also include one or more linehead skew adjustment mechanisms configured to move the movable support to adjust a skew of the linehead.

Abstract: A printing system includes one or more lineheads that jet ink onto a first side of a print media. At least one roller supports a second side of the print media as the print media is transported through the printing system. A roller deformation adjustment mechanism abuts at least one roller and is configured to apply a force to the roller to deform the roller. The deformation of the roller compensates for web skew by changing the relative timing of ink flight times from the linehead to the first side of the print media. The linehead can be disposed on a movable support. The printing system can also include one or more linehead skew adjustment mechanisms configured to move the movable support to adjust a skew of the linehead.

Abstract: A printing system can include a movable support and a linehead disposed on the movable support. The linehead is positioned opposite a print media and jets ink onto a surface of the print media. One or more linehead skew adjustment mechanisms are configured to move the movable support to adjust a skew of the linehead. The printing system can include an imaging system that captures images of the surface of the print media and a processing device that analyzes the images to determine if the print media is skewed and to determine one or more linehead skew adjustment values when the print media is skewed.

Abstract: A printing system includes a linehead that jets ink onto a surface of the print media, an imaging system that captures images of the surface of the print media, and one or more linehead skew adjustment mechanisms adapted to adjust the skew of the linehead. A method for correcting for skew in a print media in the printing system includes capturing images of one or more test marks printed or formed on the print media and analyzing the images to determine whether the print media is skewed with respect to a transport direction of the print media. If the print media is skewed, one or more linehead skew adjustment values is determined to adjust a skew of the linehead. The skew of the linehead is adjusted based on the one or more linehead skew adjustment values.

Abstract: An inkjet printer having an array of nozzles from which ink drops are emitted further includes a mechanism adapted to detect fluid levels in an ink supply tank to the inkjet printer while the printer is in idle mode, and shut down the printer when ink usage exceeds a predetermined volume.

Abstract: The present invention relates to ink output in ink jet printing systems. A refractometer is used to control the concentration of inks used in continuous ink jet printers. A concentration detector measures the total amount of light reflected from a surface. Changes in the ink cause a definite change in sensor output. As the refractive index is changed, shifting the critical angle for internal reflection, more or less light is reflected to the sensor. The index of refraction can be determined from the sensor once corrections are made to account for temperature dependencies of the sensor and light source and baseline measurement of reflected light amplitude. These dependencies are carried out in the refractometer.

Abstract: The method for shutting down an ink jet printhead and an ink jet printing station, wherein the method includes maintaining a constant positive pressure at the drop generator by closing the cross flush valve or ensuring that the cross flush valve is closed, thereby closing off the fluid return line to create a constant positive pressure through the drop generator and the orifice into the fluid line. The shutdown continues by stopping the flow of fluid from the fluid supply line and circulating cleaning fluid through at least one filter, into the drop generator, out through the orifice structure, into the fluid line, and into a reservoir. The shutdown ends by flowing pressurized air, which is preferably clean of particulates, through the filter, drop generator, orifice structure, and fluid line to displace substantially all the cleaning fluid from the filter, drop generator, and orifice structure.