Patent ID: 7431415
Filing Date: 2008-10-07
Classification: B41J

Abstract:
1. A method for determining data for a warmup cycle of an ink jet printhead before operating said ink jet printhead comprising the steps of: storing warmup data and data representing a first condition in a memory of an apparatus employing an ink jet printhead upon installation of an ink cartridge for said ink jet printhead in said apparatus, before a first use of said newly installed ink cartridge; accumulating and storing parameter data for at least two second conditions for a fast start, executed in less than 30 seconds, of said ink jet print head during repeated use of said ink jet printhead said second conditions being selected from the group consisting of temperature-related data, history-related and user-related data; determining warmup data for said second conditions from said parameter data and employing said warmup data for said second conditions in said fast start of said ink jet printhead; uniquely allocating identification data to said ink cartridge; before each use of said ink cartridge, interrogating said identification data and checking said identification data to authenticate said identification data; determining said warmup data for said fast start according to a first procedure if said ink cartridge is authenticated and according to a second procedure if said ink cartridge is not authenticated.