Abstract: An ink jet printer having an ink delivery system that allows air to be absorbed by ink that is being delivered to an ink jet print cartridge that includes a thermal printhead, so that ink delivered to the printhead has an air saturation level of at least 30%. The dissolved air reduces damage to heater resistors of the thermal ink jet printhead that would otherwise be caused by the in rush of ink after an ink drop is fired.

Abstract: Ink-jet ink compositions are described comprising at least one organo-phosphonic acid or its sodium or potassium salt. The ink-jet ink compositions reduce puddling, scale formation, kogation and corrosion, and as such lead to improved print quality.

Abstract: An inkjet printer for printing on a print medium includes at least one print cartridge, a carriage shell adapted to hold the at least one print cartridge and traverse the print medium, and a carriage skirt extending from the carriage shell. The at least one print cartridge includes a printhead having a scan axis and a plurality of ink orifices formed in a front face thereof. The carriage shell traverses the print medium along the scan axis during printing and the carriage skirt extends from the carriage shell substantially parallel with the front face of the printhead in a direction of the scan axis.

Abstract: An ink jet printer having an ink delivery system that allows air to be absorbed by ink that is being delivered to an ink jet print cartridge that includes a thermal printhead, so that ink delivered to the printhead has an air saturation level of at least 30%. The dissolved air reduces damage to heater resistors of the thermal ink jet printhead that would otherwise be caused by the in rush of ink after an ink drop is fired.

Abstract: Ink-jet ink compositions are described comprising at least one organo-phosphonic acid or its sodium or potassium salt. The ink-jet ink compositions reduce puddling, scale formation, kogation and corrosion, and as such lead to improved print quality.

Abstract: A thermal inkjet printer is provided. The printer has a sensor that detects the operating temperature of its printhead. If the temperature of the printhead is below the printhead's normal operating temperature when the printer is going to start to print an image or document, the operating temperature of the printhead is set at a temperature higher than its normal temperature. This is to ensure that the drop-volume of the printer stays at an optimum level when the printer is beginning to start to print the image or document after a period of non-use. Shortly after the printer has started the printing task, the operating temperature of the printhead is reduced to its normal operating temperature.

Abstract: An inkjet printer for printing on a print medium includes a printhead having an ink orifice formed therein through which an ink drop is ejected into a print zone between the printhead and the print medium during printing, and an air movement system which directs a stream of gas through the print zone as the ink drop is ejected during printing. When ejected, the ink drop forms a head and a tail. As such, the stream of gas converges the tail of the ink drop and the head of the ink drop during printing so as to improve the shape of a dot formed by the ink drop on the print medium.

Abstract: A thermal inkjet printer is provided. The printer has a sensor that detects the operating temperature of its printhead. If the temperature of the printhead is below the printhead's normal operating temperature when the printer is going to start to print an image or document, the operating temperature of the printhead is set at a temperature higher than its normal temperature. This is to ensure that the drop-volume of the printer stays at an optimum level when the printer is beginning to start to print the image or document after a period of non-use. Shortly after the printer has started the printing task, the operating temperature of the printhead is reduced to its normal operating temperature.

Abstract: An inkjet printer for printing on a print medium includes at least one print cartridge, a carriage shell adapted to hold the at least one print cartridge and traverse the print medium, and a carriage skirt extending from the carriage shell. The at least one print cartridge includes a printhead having a scan axis and a plurality of ink orifices formed in a front face thereof. The carriage shell traverses the print medium along the scan axis during printing and the carriage skirt extends from the carriage shell substantially parallel with the front face of the printhead in a direction of the scan axis.

Abstract: An inkjet printer for printing on a print medium includes a printhead having an ink orifice formed therein through which an ink drop is ejected into a print zone between the printhead and the print medium during printing, and an air movement system which directs a stream of gas through the print zone as the ink drop is ejected during printing. When ejected, the ink drop forms a head and a tail. As such, the stream of gas converges the tail of the ink drop and the head of the ink drop during printing so as to improve the shape of a dot formed by the ink drop on the print medium.

Abstract: An ink delivery system that allows air to be absorbed by ink that is being delivered to an ink jet print cartridge that includes a thermal printhead, so that ink delivered to the printhead has an air saturation level of at least 30%. The dissolved air reduces damage to heater resistors of the thermal ink jet printhead that would otherwise be caused by the in rush of ink after an ink drop is fired.

Abstract: A thermal ink jet printhead that includes an adhesion interface between a silicon carbide layer of a thin film substrate and a polymer ink barrier layer in the vicinity of ink chambers formed in the polymer ink barrier layer, and an adhesion interface between a silicon carbide layer disposed on the ink barrier layer and an orifice plate. An intervening adhesion promoter can be located between the silicon carbide layer of the thin film substrate and the polymer ink barrier layer, and between the silicon carbide layer disposed on the ink barrier layer and the orifice plate.