摘要:
Two electronic components can be accurately aligned with each other such that a mark-recognition apparatus captures mutually corresponding alignment marking-means of the two components in the same fields of view thereof and measures the positions of the two components. A first electronic component having two alignment holes perforated at predetermined positions thereof so as to be spaced away from each other by a predetermined interval is held with a receiving table, and also a second electronic component having two alignment marks formed at predetermined positions thereon so as to have an interval therebetween in agreement with that between the two alignment holes is held with a position-adjusting mechanism. Thus, in a state in which the alignment marks of the second electronic component are introduced in the corresponding alignment holes of the first electronic component, the mark-recognition apparatus captures the alignment marks and the alignment holes in the same fields of view thereof and measures the positions of the two components, and the position-adjusting mechanism adjusts the position of the second electronic component such that the alignment marks of the second electronic component lie at predetermined positions in the alignment holes of the first electronic component.
摘要:
A printhead assembly for an A4 pagewidth drop on demand printer includes a number of printhead modules situated along a metal channel. The metal channel is typically of a special alloy called “Invar 36”. Preferably the channel is nickel plated to help match it to the coefficient of thermal expansion of silicon, being the major component of each individual printhead module. The channel captures the printhead modules in a precise alignment relative to each other and the similar coefficient of thermal expansion of the “Invar” channel to the silicon chips allows similar relative movement during temperature changes.
摘要:
A modular pagewidth printhead includes a chassis. A reservoir structure is mounted on the chassis and defines a number of longitudinally extending ink reservoirs. A plurality of printhead modules is mounted on the chassis so that the chassis is interposed between the printhead modules and the reservoir structure. The printhead modules each include an ink distribution assembly and an elongate printhead integrated circuit mounted on the ink distribution assembly. The ink distribution assembly extends partially through the chassis to engage the reservoir structure. Adjustment mechanisms are arranged on the chassis to engage respective printhead modules to adjust a lateral position of the respective printhead modules to facilitate alignment of the printhead integrated circuits.
摘要:
The present invention relates to a printhead assembly. The printhead assembly includes a metal body defining a channel and a silicon core located within the channel. One or more printhead modules mounted to the silicon core are also provided. In one embodiment, each printhead module may include an integrated circuit and at least one fiducial for aligning the printhead.
摘要:
A modular printhead for a digital printer wherein the modules (2) may be mechanically aligned using specifically designed frame (3) supporting the modules (2). The frame (3) having a plurality of mounting sites (19) for mounting respective printhead modules (2) to the frame (3); wherein, at least one of the mounting sites (19) having mechanical adjustment mechanism (15, 16, 17 and 18) for reducing input movements to effect minute adjustments of the position of the printhead module (2) with respect to the frame (3).
摘要:
A liquid discharge apparatus has liquid chambers and nozzles that discharge droplets of liquids contained in the liquid chambers through liquid channels. The liquid discharge apparatus includes a substrate provided with partitions on one face thereof, the liquid chambers and the liquid channels being defined between the partitions. The liquid discharge apparatus further includes a nozzle sheet provided with adhesion-improving layers at least at positions corresponding to the top faces of the partitions and the nozzles for discharging liquid, the nozzle sheet and the top faces of the respective partitions being bonded to each other with the adhesion-improving layers. The liquid discharge apparatus also includes driving elements provided on the face of the substrate at positions corresponding to the liquid chambers, for changing the pressure of the liquid chambers. The liquid discharge apparatus is used as a printer head for ink jet printing.
摘要:
A printhead assembly for an ink jet printer has an elongate support structure (1) with alternating segments of different materials (3, 4). The segments are bonded end to end. The materials may have different coefficients of thermal expansion. The support member materials (3, 4) are selected and structurally configured so that the effective coefficient of thermal expansion of the support member as a whole substantially matches that of a printhead substrate material.
摘要:
A printhead assembly for an ink jet printer that has an elongate support structure (1) that attaches to the printer and is adapted to accept a printhead (2) that mounts to the support member (1). The support member (1) is formed from a number of laminated materials (3, 4) having different coefficients of thermal expansion. The support member materials (3, 4) are selected and structurally configured so that the effective coefficient of thermal expansion of the support member as a whole substantially matches that of the silicon nozzle substrate material.
摘要:
Inkjet heads and methods of fabricating and exchanging the same. The inkjet head includes a substrate having a liquid supply hole; a nozzle plate disposed on an upper surface and provided with a nozzle hole to eject the liquid; a fluid channel forming layer disposed between the substrate and the nozzle plate and providing a chamber and a fluid channel to connect the chamber and the liquid supply hole; a heat-generating body disposed at the chamber to generate energy to eject the liquid; and a filler filled in the fluid channel to prevent air from being introduced into the fluid channel and allowed to cause phase transition into liquid. When the fluid channel forming layer and the nozzle plate are disposed on the substrate to constitute the head, the gel is injected into the fluid channel in the fluid channel forming layer to prevent air from being introduced into the fluid channel. When the head is newly mounted on the inkjet cartridge to be changed, the filled gel is ejected by an inherent operation of the head to eject ink droplets by expanding bubbles, and the ink stored in the ink cartridge is introduced into the fluid channel to be initially filled in the head while ejecting the gel.
摘要:
A printhead assembly includes an elongate ink reservoir arrangement that defines a plurality of ink reservoirs, particular inks being received in respective ink reservoirs. A plurality of printhead modules are releasably engaged with the ink supply. Each printhead module includes a plurality of ink chambers in fluid communication with respective ink reservoirs. A micro-electromechanical printhead chip is mounted on each respective printhead module and has inlets in fluid communication with the ink chambers.