Predictive ink delivery system and methods of use

• Main Authors: Renzo Trip, Angus Condie, David Speed
• Format: Patent
• Language: English
• Published: 23.06.2021
• Subjects: COLOUR PRINTING; CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

A processor controlled sub-controller (20, Fig.1) controls the fluid pressure in one or more droplet ejection heads (60, Fig.1). The sub-controller is configured to receive a droplet ejection head movement profile for each of said one or more droplet ejection heads 111; determine a respective induced fluid pressure profile at predetermined locations for each of said one or more droplet ejection heads using the respective droplet ejection head movement profile 115; and generate respective pressure correction data for each of said one or more droplet ejection heads based on the respective induced fluid pressure profile and a predetermined pressure window to be maintained at said one or more droplet ejection heads 120. There is also a processor-controlled controller configured to control a printing process comprising controlling the fluid pressure in one or more droplet ejection heads (60, Fig.1). The controller is configured to receive a printing strategy (105, Fig.7); and calculate a respective droplet ejection head movement profile for each of said one or more droplet ejection heads using said printing strategy (110, Fig.7). The controller may be further configured to send said droplet ejection head movement profile to the sub-controller or to incorporate the functionality of a sub-controller.