摘要:
A stylus comprising: an elongate chassis molding; a nib at one end of the chassis molding; and, an elongate cover molding for close-fitting engagement with the chassis molding; such that, the cover molding is user replaceable.
摘要:
A method of authenticating an object, the method including: sensing coded data provided on or in a surface associated with the object; determining, from the sensed coded data: an identity of the object; a plurality of signature fragments, the signature being a digital signature of at least part of the identity; determining, using the plurality of signature fragments, a determined signature; generating, using the determined signature and a key, a generated identity; comparing the identity to the generated identity; and, authenticating the object using the results of the comparison.
摘要:
A printer arrangement comprises a printing unit (1) receivable in a conveyance (132). A wireless data communications port is incorporated in the unit for enabling data to be printed to be transmitted to the printing unit in a wireless manner.
摘要:
A capping mechanism is disclosed for a pagewidth printhead assembly (50) having a pagewidth printhead (51) and a plurality of nozzles located along the printhead (51) for delivering ink onto print media as it is transported past the printhead. The capping mechanism comprises- i) a capping member (83) formed from a flexible sheet-like material and having a width corresponding substantially to the length of the printhead (51), and ii) means (84, 85) arranged to position the capping member (83) in nozzle capping engagement with the printhead (51). The capping mechanism (83) discloses in relation to a printhead assembly having two pagewidth printheads, and further disclosures are made in respect of an inkjet printer incorporating the capping mechanism and a method of capping a pagewidth printhead.
摘要:
There is disclosed an ink jet printhead which comprises a plurality of nozzles (3) and one or more heater elements (10) corresponding to each nozzle (3). Each heater element is configured to heat a bubble forming liquid in the printhead to a temperature above its boiling point to form a gas bubble (12) therein. The generation of the bubble causes the ejection of a drop of an ejectable liquid (such as ink) through the respective corresponding nozzle, to effect printing. The printhead has a plurality of nozzle chambers (7) each corresponding to a respective nozzle, with a plurality of the heater elements being disposed within each chamber. The heater elements within each chamber are formed on different respective layers to one another.
摘要:
An ink ejection type printhead having a plurality of ink ejection devices around a central axis, the ink ejection devices arranged in a series of groups generally extending along non parallel lines (1370-1381). The lines may be curved. The illustrated form of the printhead is suitable for use in a pen, or cartridge for a pen, as an alternative to a conventional nib or point of a pen or pencil.
摘要:
A printhead chip for an inkjet printhead includes a plurality of nozzle arrangements on a substrate (12). Each nozzle arrangement (10) includes nozzle chamber walls (18) and a roof (20) that define a nozzle chamber (22) with the roof defining an ink ejection port (30) in fluid communication with the nozzle chamber. An ink-ejecting member or paddle (54) is positioned in the nozzle chamber and displaceable towards and away from the ink ejection port so that a resultant fluctuation in ink pressure within the nozzle chamber results in an ejection of ink from the ink ejection port (30). At least one work transmitting structure of a lever mechanism (38) is displaceable with respect to the substrate results in displacement of the ink-ejecting member. A thermal bend actuator (62) is capable of displacing the structure upon receipt of an electrical drive signal (14). An air chamber (80) defined by walls (90) and a covering formation (78) are positioned over the actuator to protect the component from ingress of microscopic detritus such as paper dust.
摘要:
This invention concerns a printer driver for a high performance color printer, such as a printer using a page-width drop-on-demand inkjet printhead. In another aspect it concerns a method of printing. The printer driver manages a two layer page buffer into which image objects are composited during page construction. The first layer contains contone data while the second layer contains bi-level data. The bi-level data is composited over the contone data by the printer. The printer driver operates such that where there is contone data composited with the contone layer that obscures bi-level data, the obscured bi-level data is removed from the bi-level layer and either discarded, or in the case where there is some interaction between the image represented by the obscuring contone data and the image represented by the obscured bi-level data, then the bi-level data is composited with the contone data before the obscuring contone data is composited with the contone layer.
摘要:
A printhead chip for an inkjet printhead includes a plurality of nozzle arrangements (100) positioned on a substrate (32). Each nozzle arrangement includes a chamber structure defining a nozzle chamber (106) that receives ink. An ink ejecting member (140) positioned in the nozzle chamber is displaceable in the nozzle chamber to eject ink from the nozzle chamber. Each nozzle actuator (148) is positioned on the substrate, the actuator having a working portion (156) displaceable with respect to the substrate when the actuator receives a driving signal. A sealing structure (130) is positioned on the substrate between the actuator and the ink-ejecting member inhibiting ink flow between the ink ejecting member and the actuator. A motion transmitting structure (122) pivotally bridges the sealing structure and interconnects the working portion (156) of the actuator and the ink-ejecting member (140) to transmit displacement of the working portion relative to the substrate to the ink ejecting member. Slotted openings (174) form a pair of opposed flexural connectors (178) between the outer structure (170) and the motion transmitting structures (122) allowing torsional deformation accommodating pivotal movement during operation of the nozzle arrangement.
摘要:
Machine-readable coded data disposed on or in a substrate in accordance with a layout, the layout having at least order n rotational symmetry, where n is at least two, the layout encoding an orientation codeword comprising a sequence of an integer multiple m of of n symbols, where m is one or more, each encoded symbol being distributed at n locations about a center of rotational symmetry of the layout such that decoding the symbols at each of the n orientations of the layout produces n representations of the orientation codeword, each representation comprising a different cyclic shift of the orientation codeword and being indicative of the degree of rotation of the layout, and wherein the orientation codeword is fault tolerant.