Patent application number | Description | Published |
20150029247 | METHOD OF GENERATING PRINT DATA FOR INKJET PRINTHEAD - A method of generating print data for an inkjet printhead having a plurality of ink planes. The method includes the steps of: receiving image data for a print job in a printer controller; retrieving keep-wet pattern data for each ink plane of the printhead, the retrieved keep-wet pattern data being determined using one or more input parameters; generating first print data for each ink plane in the printer controller based on the received image data; merging the first print data with the keep-wet pattern data to provide second print data for each ink plane; and sending the second print data from the printer controller to the printhead, thereby causing the printhead to print an image together with a keep-wet pattern. The keep-wet pattern is defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead. | 01-29-2015 |
20150029248 | METHOD OF INKJET PRINTING AND MAINTAINING NOZZLE HYDRATION - A method of printing from a fixed inkjet printhead having a plurality of ink planes. The method includes the steps of: feeding a print medium past the printhead in a media feed direction, the media feed direction defining relative upstream and downstream sides of the printhead; printing an image onto the print medium, the image being defined by image data; | 01-29-2015 |
20150029264 | MULTI-COLOR PRINTER WITH INK PLUMBING FOR OPTIMIZED NOZZLE HYDRATION - A multi-color printer has an array of monochrome fixed inkjet printheads aligned in a media feed direction. The printer includes: a first printhead positioned furthest upstream relative to the media feed direction; a second printhead positioned furthest downstream relative to the media feed direction; and a third printhead positioned between the first and second printheads. Each printhead is supplied with a respective ink from a multi-color ink set, the first printhead being supplied with a lowest luminance ink of the ink set and the third printhead being supplied with a highest luminance ink of the ink set. | 01-29-2015 |
20150202865 | METHOD OF INKJET PRINTING AND MAINTAINING NOZZLE HYDRATION - A method of printing from a fixed inkjet printhead having a plurality of ink planes. The method includes the steps of: feeding a print medium past the printhead in a media feed direction, the media feed direction defining relative upstream and downstream sides of the printhead; printing an image onto the print medium, the image being defined by image data; and printing a keep-wet pattern onto the print medium from each ink plane of the printhead, the keep-wet pattern being defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead. A first keep-wet pattern from a first ink plane is printed at a higher frequency than a second keep-wet pattern from a second ink plane, the first ink plane being furthest upstream in the printhead. | 07-23-2015 |
20150251421 | INKJET NOZZLE DEVICE HAVING DUAL CHAMBER INLETS AND TWOFOLD SYMMETRY - An inkjet nozzle device includes: a nozzle chamber having a floor, a roof and perimeter sidewalls extending between the floor and the roof, wherein a nozzle aperture is defined in the roof; a heating element for generating gas bubbles in the nozzle chamber so as to eject ink through the nozzle aperture, wherein a centroid of the heating element is aligned with a centroid of the nozzle aperture; and a pair of chamber inlets defined in the floor of the nozzle chamber, the chamber inlets being symmetrically disposed about the centroid of the heating element. The inkjet nozzle device has a pair of orthogonal symmetry planes passing through the centroid of the nozzle aperture. | 09-10-2015 |
20150360465 | METHOD OF GENERATING PRINT DATA FOR INKJET PRINTHEAD - A method of generating print data for an inkjet printhead having a plurality of ink planes. The method includes the steps of: receiving image data for a print job in a printer controller; retrieving keep-wet pattern data for each ink plane of the printhead, the retrieved keep-wet pattern data being determined using one or more input parameters; generating first print data for each ink plane in the printer controller based on the received image data; merging the first print data with the keep-wet pattern data to provide second print data for each ink plane; and sending the second print data from the printer controller to the printhead, thereby causing the printhead to print an image together with a keep-wet pattern. The keep-wet pattern is defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead. | 12-17-2015 |
20150367629 | METHOD OF INKJET PRINTING AND MAINTAINING NOZZLE HYDRATION - A method of printing from a fixed inkjet printhead having a plurality of ink planes. The method includes the steps of: feeding a print medium past the printhead in a media feed direction, the media feed direction defining relative upstream and downstream sides of the printhead; printing an image onto the print medium, the image being defined by image data; | 12-24-2015 |
Patent application number | Description | Published |
20140022312 | Inkjet nozzle assembly with elliptical nozzle aperture and offset beam heater element - An inkjet nozzle assembly includes: a nozzle chamber having a planar roof spaced apart from a floor, the roof having a nozzle aperture defined therein; and a heater element disposed in the nozzle chamber, the heater element being configured as a planar beam extending longitudinally and parallel with a plane of the roof. The nozzle aperture is elliptical having a centroid, a major axis and a minor axis, the major axis of the nozzle aperture is parallel with a longitudinal axis of the beam, the centroid of the nozzle aperture is offset from a longitudinal centroid of the planar beam, and the minor axis of the nozzle aperture overlaps with a whole width of the beam. | 01-23-2014 |
20140028754 | METHOD OF OPERATING INKJET PRINTHEAD IN PRINTING AND MAINTENANCE MODES - A method of operating an inkjet printhead having a plurality of ink chambers, each ink chamber including a heater element for generating a bubble and causing ejection of ink droplets from a nozzle defined in the ink chamber. The method includes the steps of: operating the printhead in a normal printing mode whereby relatively shorter drive pulses are delivered to the heater elements to eject ink droplets used in normal printing; and operating the printhead in a maintenance mode whereby relatively longer drive pulses are delivered to the heater elements. The relatively longer drive pulses generate high impulse bubbles for recovering nozzles affected by decap. | 01-30-2014 |
20150035904 | INKJET NOZZLE DEVICE HAVING HIGH DEGREE OF SYMMETRY - An inkjet nozzle device includes a main chamber having a floor, a roof and a perimeter wall extending between the floor and the roof. The main chamber includes: a firing chamber having a nozzle aperture defined in the roof and an actuator for ejection of ink through the nozzle aperture; an antechamber for supplying ink to the firing chamber, the antechamber having a main chamber inlet defined in the floor; and a baffle structure partitioning the main chamber to define the firing chamber and the antechamber, the baffle structure extending between the floor and the roof. The firing chamber and the antechamber have a common plane of symmetry. | 02-05-2015 |
20150035907 | INKJET NOZZLE DEVICE WITH SYMMETRICALLY CONSTRAINED BUBBLE FORMATION - An inkjet nozzle device for symmetrically constrained bubble formation includes: a firing chamber having and an end wall, opposite sidewalls and a nozzle aperture defined in a roof thereof; a baffle plate positioned between the sidewalls of the firing chamber, such that a pair of firing chamber entrances are defined between side edges of the baffle plate and the sidewalls; and an elongate heating element bonded to a floor of the firing chamber, the heater element extending longitudinally between the baffle plate and the end wall. The baffle plate is wider than the heater element. Further, a centroid of the heater element coincides with a midpoint between the baffle plate and the end wall. | 02-05-2015 |
20150070442 | INKJET NOZZLE DEVICE CONFIGURED FOR VENTING GAS BUBBLES - An inkjet nozzle device configured for venting a gas bubble during droplet ejection. The inkjet nozzle device includes: a firing chamber for containing ink, the firing chamber having a floor and a roof defining an elongate nozzle aperture having a perimeter; and an elongate heater element bonded to the floor of the firing chamber, the heater element and nozzle aperture having aligned longitudinal axes. The device is configured to satisfy the relationships A =swept volume/area of heater element=8 to 14 microns; and B=firing chamber volume/swept volume=2 to 6. The swept volume is defined as the volume of a shape defined by a projection from the perimeter of the nozzle aperture to the floor of the firing chamber, and includes a volume contained within the nozzle aperture. | 03-12-2015 |
20150197091 | INKJET NOZZLE DEVICE HAVING CHAMBER GEOMETRY CONFIGURED FOR CONSTRAINED SYMMETRIC BUBBLE EXPANSION - An inkjet nozzle device is configured for constrained symmetric bubble expansion. The inkjet nozzle device includes a firing chamber having a nozzle aperture and a heater element. The heater element extends between an end wall of the firing chamber and a baffle plate facing the end wall. The baffle plate is wider than the heater element and a centroid of the heater element coincides with a midpoint between the baffle plate and the end wall. | 07-16-2015 |
Patent application number | Description | Published |
20140202462 | MEDICAL TUBES AND METHODS OF MANUFACTURE - The disclosure relates to medical tubes and methods of manufacturing medical tubes. The tube may be a composite structure made of two or more distinct components that are spirally wound to form an elongate tube. For example, one of the components may be a spirally wound elongate hollow body, and the other component may be an elongate structural component also spirally wound between turns of the spirally wound hollow body The tube need not be made from distinct components, however. For instance, an elongate hollow body formed (e.g., extruded) from a single material may be spirally wound to form an elongate tube. The elongate hollow body itself may in transverse cross-section have a thin wall portion and a relatively thicker or more rigid reinforcement portion. The tubes can be incorporated into a variety of medical circuits or may be employed for other medical uses. | 07-24-2014 |
20150027204 | RESPIRATORY GAS HUMIDIFICATION SYSTEM - A humidification system comprises a first sensor and a second sensor. The first and second sensors are adapted to sense flow characteristics within the system. The first and second sensors are isolated from the flow by barriers formed by respective first and second sealing members. The sealing members extend through apertures formed in the system and have a portion that contacts the sensing elements of the respective first and second sensors. A cartridge can hold the sensors and provide repeatable penetration depths into a flow passage of the system. A medical tube has a composite structure made of two or more distinct components that are spirally wound to form an elongate tube. One component can be a spirally wound elongate hollow body; the other component can be an elongate structural component spirally wound between turns of the spirally wound hollow body. | 01-29-2015 |
20150306333 | MEDICAL TUBES AND METHODS OF MANUFACTURE - The disclosure relates to medical tubes and methods of manufacturing medical tubes. The tube may be a composite structure made of two or more distinct components that are spirally wound to form an elongate tube. For example, one of the components may be a spirally wound elongate hollow body, and the other component may be an elongate structural component also spirally wound between turns of the spirally wound hollow body The tube need not be made from distinct components, however. For instance, an elongate hollow body formed (e.g., extruded) from a single material may be spirally wound to form an elongate tube. The elongate hollow body itself may in transverse cross-section have a thin wall portion and a relatively thicker or more rigid reinforcement portion. The tubes can be incorporated into a variety of medical circuits or may be employed for other medical uses. | 10-29-2015 |
Patent application number | Description | Published |
20110264922 | DIGITAL VIDEO GUARD - This invention relates to the veracity of information that is displayed to a user of a computer and can also relate to the veracity of information provided to a computer by human input devices such as pointing devices and keyboards. A digital video guard device is a peripheral that is retrofitted to commodity computer device. The digital video guard device provides trust in specific information presented on a digital display. The digital video guard device resides in-line with a digital display and enables secure end-to-end interactions between a user and a displayed (usually remote) application. In-band signalling within the digital video stream is used to carry encrypted information from a remote source, over untrusted network infrastructure through the digital video guard device to a user for viewing. The creation of encrypted digital video content can be achieved by either local or remote applications, and is effected by manipulating what is to be rendered on a computer's display, i.e. encrypting data that will at some time form part of a digital display stream and be output from an information device to a digital display. The digital video guard device can decrypt and verify the integrity of the digital video content as it is sent to a digital display. The integrity of the displayed information is indicated by a trusted LED on the digital video guard device hardware. Part or the entire video signal may be designated as trusted, depending on what data within the video signal has been encrypted, signed, or otherwise labelled as being trustworthy. | 10-27-2011 |
20140101782 | DIGITAL VIDEO GUARD - This invention relates to the veracity of information displayed to a user of a computer, and information provided to a computer by human input devices such as mice and keyboards. A digital video guard (DVG) device is a peripheral that is retrofitted to commodity computer devices. The DVG resides in-line with a digital display and enables secure end-to-end interactions between a user and a displayed (usually remote) application. In-band signalling within the digital video stream is used to carry encrypted information from a local or remote source, over untrusted network infrastructure through the digital video guard device to a user. The DVG decrypts and verifies the integrity of the digital video. The integrity of the displayed information is indicated by a trusted LED on the DVG hardware. Portions of the video signal may be designated as trusted, if the received data has been encrypted, signed, or labelled as trustworthy. | 04-10-2014 |
Patent application number | Description | Published |
20110100359 | METHOD AND SYSTEM FOR FRACTIONATION OF LIGNOCELLULOSIC BIOMASS - Methods and systems for fractionating lignocellulosic biomass including hemicellulose, cellulose and lignin, including exploding the biomass cells to devolatilize the biomass, hydrolyzing the hemicellulose to produce a liquid component including hemicellulosic sugars and a solid component including less than 10% hemicellulose, separating the liquid and solid components, vaporizing the cellulose in the solid component, and condensing the cellulosic sugar vapors. The methods and systems may vaporize the cellulose in a continuous steam reactor at a temperature of about 400-550° C. and a pressure of about 1-3 bara. Electromagnetic and/or electroaccoustic treatment such as ultrasound and/or microwave treatment may be applied to the biomass immediately before or during cellulose hydrolysis. | 05-05-2011 |
20140123973 | METHOD AND SYSTEM FOR FRACTIONATION OF LIGNOCELLULOSIC BIOMASS - Methods and systems for fractionating lignocellulosic biomass including hemicellulose, cellulose and lignin, including exploding the biomass cells to devolatilize the biomass, hydrolyzing the hemicellulose to produce a liquid component including hemicellulosic sugars and a solid component including less than 10% hemicellulose, separating the liquid and solid components, vaporizing the cellulose in the solid component, and condensing the cellulosic sugar vapors. The methods and systems may vaporize the cellulose in a continuous steam reactor at a temperature of about 400-550° C. and a pressure of about 1-3 bara. Electromagnetic and/or electroaccoustic treatment such as ultrasound and/or microwave treatment may be applied to the biomass immediately before or during cellulose hydrolysis. | 05-08-2014 |
20160068920 | METHOD AND SYSTEM FOR FRACTIONATION OF LIGNOCELLULOSIC BIOMASS - Methods and systems for fractionating lignocellulosic biomass including hemicellulose, cellulose and lignin, including exploding the biomass cells to devolatilize the biomass, hydrolyzing the hemicellulose to produce a liquid component including hemicellulosic sugars and a solid component including less than 10% hemicellulose, separating the liquid and solid components, vaporizing the cellulose in the solid component, and condensing the cellulosic sugar vapors. The methods and systems may vaporize the cellulose in a continuous steam reactor at a temperature of about 400-550° C. and a pressure of about 1-3 bara. Electromagnetic and/or electroaccoustic treatment such as ultrasound and/or microwave treatment may be applied to the biomass immediately before or during cellulose hydrolysis. | 03-10-2016 |