摘要:
A method of an embodiment of the invention determines whether at least a portion of an image to be formed on a media sheet on a swath-by-swath basis by an image-formation mechanism includes one or more bar codes having a height that is less than a height of a swath of the image-formation mechanism. The mechanism adjusts the swath of the image-formation mechanism so that the bar codes are formed as part of the image on the media sheet within a single swath by the image-formation mechanism.
摘要:
A fluid-ejection assembly of one embodiment is disclosed comprising first and second arrays of fluid-ejection mechanisms, first and second service stations, and first and second drive mechanisms. The first array ejects fluid onto media; the first service station is to service the first array. The second array ejects fluid onto the media; the second service station is to service the second array. The first drive mechanism moves the first array between a first position to eject fluid onto the media and a second position at the first service station, while the second array ejects fluid onto the media in place of the first array. The second drive mechanism moves the second array between a third position to eject fluid onto the media and a fourth position at the second service station while the first array ejects fluid onto the media in place of the second array.
摘要:
The present invention includes as one embodiment a cleaning system for an inkjet printhead, including a wiper and a media detection device coupled to the wiper for activating engagement of the wiper with the printhead when no media is detected and for deactivating the wiper when media contacts the media detection device.
摘要:
An arbitrary 3D or 2D shape is formed by construction from colorant in a volume—which may be cylindrical, annular, or of arbitrary cross-section, depending on form of the invention. In some forms, a 2D-extended array of colorant-ejecting nozzles is disposed in a particular linear direction relative to the volume, and a programmed processor controls ejection of colorant from the nozzles to pass through the volume. A 2D colorant-retrieving frame (ideally back-to-back with the array) is disposed in a second linear direction opposite to the one particular direction, from the array, to recover the colorant and thus erase the image—which can then be refreshed, with animation changes if desired, by the writing array. Colorant is moved through the volume by gravity, or by continuous ejection of material from the array and suction at the frame to form a suspending fluid flow—the array moving at equal but opposite velocity so that the image is stationary. The frame is a passive sump for colorant recovery, or has a pump for returning colorant to the array for reuse—in which case the array best ejects colorant of plural properties and the device has filters to separate retrieved colorant by those properties. In some forms, colorant is stroboscopically lighted to display apparent motion of an image element. A force field can be used to control, or help control, colorant position after ejection.
摘要:
A method for detecting clogged or otherwise anomalous nozzles in an ink jet printing device having a printer head containing at least one nozzle configured to eject droplets of ink, the method including sending an instruction to the printer head to eject droplets of ink, generating an output signal from a detecting means configured to detect a passage of droplets past the detecting means and applying an algorithm to the output signal which is configurable to check a correct functioning of the nozzles.
摘要:
A method for servicing an inkjet printhead effects recovery against a particular printhead failure mode via implementation of a printhead servicing routine including, but not limited to, a bubble recovery routine, a contaminant purging routine, and/or a (standard) printhead servicing routine. In a preferred embodiment, the method for servicing an inkjet printhead takes into consideration nozzle health data, diagnostics, or the like. In a preferred embodiment, a bitmap or mask is employed to control firing of the nozzles during the servicing of the printhead. In a preferred embodiment, the servicing method includes the step of: firing the printing nozzles in a manner tending to force contaminants at the printing nozzles toward one end of the printhead. In another preferred embodiment, the servicing method includes the steps of: providing an inkjet printhead with larger-sized sewage nozzles at its edges; firing the printhead nozzles in a manner which forces contaminants to the edges; and firing the sewage nozzles to expel the contaminants.
摘要:
A removable service module in a printer service station periodically interacts with a print cartridge, and is sized for proper installation in a matching service carriage slot. Upper and lower boundary guides on the service carriage prevent an unmatched or wrongly positioned service module from fitting through a slot entrance and becoming seated into a completed mounting position.
摘要:
An improved apparatus for checking a plurality of printer nozzles in a printer device comprises: a printer head comprising a plurality of nozzles; a device for detecting at least one droplet of ink sprayed from at least one nozzle of said plurality of nozzles; and a device for performing a sequence of measurements on a first output signal of the detecting device, wherein a determination of performance of the print head is made by analyzing detected output signals produced by one or a plurality of ink droplets passing the detector, the one or plurality of ink droplets containing a predetermined minimum volume of ink, and the sequence of measurements being measured at a plurality of time intervals.
摘要:
A method for servicing an inkjet printhead without removing the printhead from a carriage of the printer, wherein a controlled pressure differential is generated across the nozzle plate of the printhead to cause the formation of a controlled puddle of ink on the outside of the nozzle plate. Ink is then fired into the puddle through the nozzles of the printhead. The puddle may then be drawn back into the printhead through the nozzles. Alternatively the puddle is generated, is maintained for a predetermined period of time and then is withdrawn into the printhead without ink being fired from the nozzles.
摘要:
A replaceable inkjet printhead cleaner service station system has separate replaceable cleaning units for each printhead in an inkjet printing mechanism, which has a pallet that moves the cleaning units translationally to service the printheads. Each cleaning unit has a printhead wiper, a printhead snout wiper, a capping system, a spittoon, and optionally, an ink solvent application system. A service station pallet moves a replaceable base between rest and sealing positions, with the base defining a cam surface. A sled has a cam follower that rides along the cam surface, with the sled supporting a cap lip. An activation wall extends from the sled to engage the printhead and move the sled along the cam surface to the sealing position through linear motion of the pallet while the printhead remains stationary. A method is provided for sealing an inkjet printhead, along with a printing mechanism employing such a capping system.