Laser-actuatable inkjet printing system and printer
View Patent ↗A laser-actuatable inkjet printing system for printing an image from digital raster data onto a print medium is disclosed. The printing system includes at least a printhead having a laser-penetrable chamber for holding ink therein. The printhead also includes a plurality of nozzles defined through a wall of the printhead to connect to the chamber. The printing system further includes a laser for producing a laser beam that is scanned across the chamber for selectively expelling droplets of ink. The expulsion of ink is in accordance with the digital raster data. Ink is expelled through multiple adjacent nozzles simultaneously onto the print medium to form each pixel of the image.
1. A laser-actuatable inkjet printing system for printing an image from digital raster data onto a print medium, the printing system comprising:
at least a printhead having a laser-penetrable chamber for holding ink therein, said chamber being defined by a plurality of walls, one of which is a laser-penetrable wall;
a plurality of nozzles formed through a wall of the chamber for expelling droplets of ink from the chamber to the print medium; and
a laser for producing a laser beam that is scanned across the chamber to selectively expel droplets of ink, in accordance with the digital raster data, through multiple adjacent nozzles simultaneously onto the print medium to form each pixel of the image,
wherein said laser-penetrable wall has a chamfered edge, and wherein the laser beam is guided through the laser-penetrable wall and is deflected by the chamfered edge onto the ink within the nozzles.
2. A laser-actuatable inkjet printing system according to claim 1 , wherein the chamber is defined by a trough having a brim that is attached to the laser-penetrable well end wherein the nozzles are defined by grooves on a surface of at least one of the brim and the laser-penetrable wall.
3. A laser-actuatable inkjet printing system according to claim 2 , further comprising at least one transducer for heating ink in the nozzles.
4. A laser-actuatable inkjet printing system according to claim 3 , wherein the at least one transducer comprises a plurality of individually-activatable sub-transducers, each of which is associated with and heats ink in one of the plurality of nozzles.
5. A printer for printing an image from digital raster data onto a print medium comprising:
at least a printhead having a laser-penetrable chamber for holding ink therein, said chamber being defined by a plurality of walls, one of which is a laser-penetrable wall;
a plurality of nozzles formed through a wall of the chamber for expelling droplets of ink from the chamber to the print medium; and
a laser for producing a laser beam that is scanned across the chamber to selectively expel droplets of ink, in accordance with the digital raster data, through multiple adjacent nozzles simultaneously onto the print medium to form each pixel of the image,
wherein said laser-penetrable wall has a chamfered edge, and wherein the laser beam is guided through the laser-penetrable wall and is deflected by the chamfered edge onto the ink within the nozzles.
6. A printer according to claim 5 , wherein the chamber is defined by a trough having a brim that is attached to the laser-penetrable wall and wherein the nozzles are defined by grooves on a surface of at least one of the brim and the laser-penetrable wall.
7. A printer according to claim 6 , further comprising at least one transducer for heating ink in the nozzles.
8. A printer according to claim 7 , wherein the at least one transducer comprises a plurality of individually-activatable sub-transducers, each of which is associated with and heats ink in one of the plurality of nozzles.