Incremental printing of symbolic information – Thermal marking apparatus or processes – Having driving circuitry for recording means
Patent
1997-06-04
2000-02-15
Le, N.
Incremental printing of symbolic information
Thermal marking apparatus or processes
Having driving circuitry for recording means
347188, 347191, B41J 2355
Patent
active
060258616
ABSTRACT:
A printhead having multiple print lines of conventional design and a printhead control system for using the multiple print lines in a variety of operations. In one embodiment, the printhead control system prints an image by superimposing the printing from multiple print lines. In another embodiment, the image is printed by alternating the energization of one print line so that each print line is used to print only 1/3 of the image lines. As a result, the print lines are allowed a relatively long time to cool, thus allowing the printhead to be operated at a faster speed. In another embodiment, the printing elements of each print line print with a different image density, and images printed by superimposing the printing elements in the print lines with a variety of combinations depending upon the desired magnitude of the image density. In still another embodiment of the printhead control system, the resistance of each printing element is checked and, if found to be unacceptably high, corresponding printing elements of other print lines are used for printing.
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Austin Pixie A.
Millet Edward M.
Nierescher David S.
Wiklof Christopher A.
Intermec IP Corporation
Le N.
Vo Anh T. N.
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