Inkjet recording apparatus and method of determining control...

Details Inkjet recording apparatus and method of determining control... Inkjet recording apparatus and method of determining control...

2007-03-29

2010-02-09

Nguyen, Lam S (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S011000, C347S013000

Reexamination Certificate

active

07658458

ABSTRACT:
An actuator can selectively switch a volume of a pressure chamber between a first state V1and a second state V2, which is greater than V1. The actuator changes from the first state into the second state and then changes back into the first state to eject ink from an ejection port. A controller controls the actuator such that To/Tc falls within a range from0.51to0.54. To represents the time period between time the actuator starts to change from the first state into the second state, to a time the actuator starts to change from the second state into the first state. Tc represents the period of proper oscillation of ink filling up the individual ink passage. The actuator is controlled so that a variation in ink ejection speed is prevented from being too large relative to the variation in the degree of deformation of the actuator.

REFERENCES:
patent: 6102512 (2000-08-01), Torii et al.
patent: 6350003 (2002-02-01), Ishikawa
patent: 6808254 (2004-10-01), Sakaida et al.
patent: 2004/0095404 (2004-05-01), Iwao et al.
patent: 0738598 (1996-10-01), None
patent: 1772268 (2007-04-01), None
patent: 2003-305852 (2003-10-01), None
European Patent Office, European Search Report for Related EP Application No. 07251445, mailed Jul. 27, 2007.

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