Patent ID: 7891751
Filing Date: 2011-02-22
Classification: B41J

Abstract:
1. A liquid discharge method comprising the steps of: using a liquid discharge apparatus including (1) a head, (2) a substrate within the head, (3) a plurality of nozzles arrayed on the head, (4) a liquid discharge section associated with each nozzle, (5) a liquid chamber associated with each liquid discharge section, (6) at least two heat generation units associated with each liquid chamber on the substrate, (7) means for relatively moving said head and a liquid discharge target (8) a discharge deflection amount calculation circuit and (9) a means for detecting a distance between the surface of the liquid discharge section and the surface of a liquid discharge target while the relative moving means moves said head and said liquid discharge target; predetermining the discharge deflection amount for the liquid discharged from said nozzle in relation to (1) the distance between the surface of said liquid discharge section and the surface of a liquid discharge target and (2) a landing target position of the liquid discharged from said nozzle; constantly detecting the distance between the surface of the liquid discharge section and the surface of a liquid discharge target while the relative moving means moves said head and said liquid discharge target and sequentially transmitting the distance to the discharge deflection amount calculation circuit via the distance detecting means; determining the actual discharge deflection amount via the discharge deflection amount calculation circuit for the liquid corresponding to the liquid discharge section from (1) said detected distance, (2) the liquid landing target position, and (3) the predetermined discharge deflection amount; and generating a heat timing differential between the heat generation units, wherein,