Incremental printing of symbolic information – Ink jet – Controller
Patent
1994-11-02
1999-03-02
Fuller, Benjamin R.
Incremental printing of symbolic information
Ink jet
Controller
347 17, 347194, 364557, B41J 2938
Patent
active
058777857
ABSTRACT:
An ink jet apparatus using an ink jet head having a heat generating element for generating thermal energy to be used to discharge ink, comprises a unit for deriving an amount .increment.Q.sub.i indicative of a heat amount stored in i (i.gtoreq.1) portions of said ink jet head sectioned by thermal time constants, corresponding to a heat amount applied to said ink jet head at a predetermined time interval .increment.t, a unit for multiplying an amount .increment.T.sub.i (n-1) indicative of the heat amount stored in the i-sectioned portion of the predetermined time interval .increment.t earlier by a predetermined constant E.sub.i corresponding to the sectioned thermal time constant, a unit for adding the amount .increment.Q.sub.i to the product, a unit for storing the sum as the amount .increment.T.sub.i (n) indicative of the heat amount stored in the i-sectioned portion, a unit for summing all amounts .increment.T.sub.1 (n) to determine an amount .increment.T corresponding to the heat amount stored in said ink jet head and a unit for controlling said ink jet head in accordance with the amount .increment.T.
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Arai Atsushi
Ebisawa Isao
Inui Toshiharu
Iwasaki Osamu
Kanematsu Daigoro
Canon Kabushiki Kaisha
Fuller Benjamin R.
Hallacher Craig A.
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