Thermal printing apparatus having a thermal print head and line

Details Thermal printing apparatus having a thermal print head and line Thermal printing apparatus having a thermal print head and line

1996-03-18

1997-05-13

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Having driving circuitry for recording means

B41J 2355

Patent

active

056297319

ABSTRACT:
A thermal print head includes a line buffer which stores n-bits of data by line units, a latch register which latches the data one line at a time from the line buffer according to the bit priority, and a plurality of heating elements which emit heat according to the data latched in the latch register for printing. The thermal print head avoids the use of a line memory, gradation counter, and gradation comparator for expressing the gradation as are required by conventional devices, thereby enabling the reduction of the amount of hardware necessary for printing, yet still achieving high speed printing.

REFERENCES:
patent: 4563693 (1986-01-01), Masaki
patent: 4621271 (1986-11-01), Brownstein
patent: 4806949 (1989-02-01), Onuma et al.
patent: 5374945 (1994-12-01), Molieri et al.

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