Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2007-03-13
2007-03-13
Meier, Stephen (Department: 2861)
Incremental printing of symbolic information
Ink jet
Controller
C347S005000, C347S014000, C347S060000
Reexamination Certificate
active
10868794
ABSTRACT:
A circuit and a method of estimating pulse frequencies of nozzles in an ink-jet head use a new mechanism of estimating pulse frequencies of nozzles instead of in a conventional counting mechanism. The circuit includes a DRAM, an adder and a method control mechanism. The method control mechanism controls the access method. The DRAM retrieves a plurality of pulse frequency parameters of nozzles after ink-jet cycle signals are received. The adder adds the parameters and weighted values to update pulse frequency parameters. The updated parameters are saved back to the DRAM.
REFERENCES:
patent: 4791435 (1988-12-01), Smith et al.
patent: 5168284 (1992-12-01), Yeung
patent: 6517175 (2003-02-01), Kanaya et al.
patent: 2004/0070637 (2004-04-01), Kanematsu et al.
Chang Jane
Chen Jessen
Huang Yu-Chu
Ou Hsiang-Pei
Industrial Technology Research Institute
Lebron Jannelle M.
Meier Stephen
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