Fixative compensation

• US 7,152,942 B2
• Filed: 12/02/2003
• Issued: 12/26/2006
• Est. Priority Date: 12/02/2002
• Status: Expired due to Fees

• Current Assignee: Memjet Technology Ltd. (Memjet Limited)
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Plunkett, Richard Thomas, Walmsley, Simon Robert
• Primary Examiner(s): Nguyen, Lamson
• Assistant Examiner(s): Lebron, Jannelle M.
• Application Number:
  US10/727,280
• Publication Number:
  US 20040189731A1
• Time in Patent Office: 1,120 Days
• Field of Search: 347/19, 347/40, 347/41
• US Class Current: 347/19
• CPC Class Codes: B41J 2/04505 aiming at correcting alignment
• CPC Class Codes: B41J 2/04508 aiming at correcting other parameters
• CPC Class Codes: B41J 2/0451 for detecting failure, e.g. clogging, malfunctioning actuator
• CPC Class Codes: B41J 2/04528 aiming at warming up the head
• CPC Class Codes: B41J 2/04541 Specific driving circuit
• CPC Class Codes: B41J 2/04543 Block driving
• CPC Class Codes: B41J 2/04563 detecting head temperature; Ink temperature
• CPC Class Codes: B41J 2/04573 Timing; Delays
• CPC Class Codes: B41J 2/04586 controlling heads of a type not covered by groups B41J2/04575 - B41J2/04585, or of an undefined type
• CPC Class Codes: B41J 2202/20 Modules
• CPC Class Codes: G06F 21/554 involving event detection and direct action
• CPC Class Codes: G06F 21/57 Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
• CPC Class Codes: G06F 21/575 Secure boot
• CPC Class Codes: G06F 21/64 Protecting data integrity, e.g. using checksums, certificates or signatures
• CPC Class Codes: G06F 21/71 to assure secure computing or processing of information
• CPC Class Codes: G06F 21/73 by creating or determining hardware identification, e.g. serial numbers
• CPC Class Codes: G06F 21/74 operating in dual or compartmented mode, i.e. at least one secure mode
• CPC Class Codes: G06F 21/78 to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: H03K 5/1252 Suppression or limitation of noise or interference specially adapted for transmission systems H04B15/00, H04L25/08
• CPC Class Codes: H04N 1/405 Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
• CPC Class Codes: Y10S 707/99933 : Query processing, i.e. searching
• CPC Class Codes: Y10S 707/99939 : Privileged access
• CPC Class Codes: Y10T 29/49401 : Fluid pattern dispersing device making, e.g., ink jet

Abstract

A method of accounting for dead nozzle remapping in a multi-nozzle printhead, including remapping a fixative intended for a dot to be printed by the dead nozzle.

Claims

1. A method of accounting for dead nozzle remapping in a multi-nozzle printhead, the method including:

remapping a fixative intended for a dot to be printed by the dead nozzle; and

determining a first fixative plane and a second fixative plane using dead nozzle compensation and a color plane requiring the fixative;

whereby, the first fixative plane is initially used to supply the fixative to the printhead, but if the first fixative plane includes a dead nozzle then the second fixative plane is used.

2. The method according to claim 1, wherein the remapping includes remapping the fixative to an operative nozzle to which dot data intended for the dead nozzle for printing at or adjacent a position at which the dead nozzle would have printed.

3. The method according to claim 1, wherein the remapping includes preventing output of the fixative onto the position where the dead nozzle would have printed a dot had it been operative.

4. The method according to claim 1, wherein the fixative defined by the first fixative plane and the second fixative plane is a multi-part fixative.