| US 7,591,522 B2 | ||
| Adjusting printing parameters in response to printhead feedback | ||
| Paul Lapstun, Balmain (Australia); Simon Robert Walmsley, Balmain (Australia); and Kia Silverbrook, Balmain (Australia) | ||
| Assigned to Silverbrook Research Pty Ltd, Balmain, New South Wales (Australia) | ||
| Filed on Aug. 08, 2003, as Appl. No. 10/636,230. | ||
| Application 10/636230 is a division of application No. 09/436747, filed on Nov. 09, 1999, granted, now 6,687,022. | ||
| Claims priority of application No. PP7024 (AU), filed on Nov. 09, 1998. | ||
| Prior Publication US 2004/0046812 A1, Mar. 11, 2004 | ||
| Int. Cl. B41J 29/38 (2006.01) | ||
| U.S. Cl. 347—14 [347/11; 347/19; 347/57] | 1 Claim |
| 1. A method of controlling the quality of an image printed by a printhead having nozzles which discharge ink by application
of a firing pulse to respective actuators, the actuators being connected in groups to a power source which applies said firing
pulses, said method comprising the steps of:
sensing the temperature of the printhead to determine the temperature of the ink,
comparing the sensed temperature to values in a pulse duration table to determine a firing pulse duration which will ensure
the quality of the printed image; and,
applying firing pulses having said determined firing pulse duration to each group of the actuators in turn to discharge ink
from the nozzles in each group so as to print an image of said ensured quality, the firing pulses being applied to the subsequent
groups so that the fired nozzles are physically separated in the printhead as far as possible from the nozzles fired in the
immediately prior group and the immediately subsequent group.
|