Heat accumulation correcting method, thermal printer, and...

Details Heat accumulation correcting method, thermal printer, and... Heat accumulation correcting method, thermal printer, and...

2006-03-30

2008-11-04

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Thermal marking apparatus or processes

Specific resistance recording element type

Reexamination Certificate

active

07446789

ABSTRACT:
A thermal head in a thermal printer has heating elements, a glaze layer and a ceramic board. Equations are used for correcting heat accumulation.in-line-formulae description="In-line Formulae" end="lead"?Eg1(M+1,N)=(1−k1).E(M,N)+(1−k2).Eg1(M,N)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Eg2(M+1,N)=k2(1−k3)(1−k4).Eg1(M,N)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Ec1(M+1,N)=k2(1−k3).k4.Eg1(M,N)+(1−k5).Ec1(M,N)in-line-formulae description="In-line Formulae" end="tail"?E(M,N): heat data of an Nth pixel of an Mth line after heat accumulation correction;Eg1(M,N): accumulated heat data of the glaze layer at point Pg1and obtained in the correction of an (M−1)th line;Eg2(M,N): accumulated heat data of the glaze layer at point Pg2and obtained in the correction of the (M−1)th line;Ec1(M,N): accumulated heat data of the ceramic board at point Pc1and obtained in the correction of the (M−1)th line.

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