Laser triggered inkjet firing
AssigneeHewlett-Packard Development Company, L.P.
InventorsFrederic Adam Ornellas, Michael A. Garris
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AssigneeHewlett-Packard Development Company, L.P.
InventorsFrederic Adam Ornellas, Michael A. Garris
Estimating the term…
A printing system has a laser scanner and a print bar such as a page-width-array printhead associated with an array of photodetectors. The scanner scans the array of photodetectors, to selectively light activate photodetectors in the array. Each photodetector, when activated by the scanner triggers its associated inkjet nozzle(s) in the printhead to deposit ink on a media surface. In one embodiment the page-width-array is stationary and the media is periodically advanced as ink drops are deposited.
A printhead for applying markings on media, comprising:
An imaging apparatus comprising:
A printing system for applying markings to media comprising:
A method for printing an image on media comprising:
A method of printing comprising:
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This invention relates to inkjet printing technology, and laser-scanning technology where a laser is used to transfer image data.
FIG. 1 is a schematic of a printing system according to an embodiment of the present invention.
FIG. 2 is a schematic of another printing system of the present invention.
FIG. 3 is a schematic of another printing system of the present invention.
Referring to FIG. 1, an aspect of the present invention is a printing system 101 that comprises a laser scanning system 103, and a printhead 105 with an optical page-width-array 107 (PWA) that includes a scannable array 109 of photodetectors 111.
Laser Scanning System
Generally, the laser scanning systems used in laser printing technology can be applied in the present invention. In laser printers the laser scans a photosensitive surface on a drum or belt. While scanning the laser is modulated to form an undeveloped electrostatic image of pixels on the surface where the laser impinges upon the surface. The photosensitive surface is moved relative to the scanning line of the laser to allow a portion of or full page of raster scan lines to be imaged upon the photosensitive surface. The undeveloped image of raster lines is then developed by contacting the surface with toner. The toner image is then transferred to a media and toner image is fixed upon the media.
Structure of heating means: laser or electron beam heating the ink
Using the combination of scanning and modulation of light: using dot sequential main scanning by means of a light deflector, e.g. a rotating…
Drives, motors, controls or automatic cut-off devices for the entire printing mechanism: devices for controlling or analysing the entire machine ;…
Typewriters
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