HEAT CONTROLLING APPARATUS OF THERMAL PRINTER

PURPOSE:To realize a heat controlling apparatus for a thermal printer having a line thermal head which prevents the temperature of each dot of the line thermal head from becoming irregular due to the printing state in the lateral direction, and obtains printing of good quality without density irregu...

Full description

Saved in:
Bibliographic Details
Main Authors EGUCHI MANABU, INOUE KATSUSHI, HATADA NAOKI, YOSHIHARA SATOSHI, NARUSE MIKIO
Format Patent
LanguageEnglish
Published 26.01.1993
Subjects
CORRECTION OF TYPOGRAPHICAL ERRORS
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
Online AccessGet full text

Cover

More Information
Summary:PURPOSE:To realize a heat controlling apparatus for a thermal printer having a line thermal head which prevents the temperature of each dot of the line thermal head from becoming irregular due to the printing state in the lateral direction, and obtains printing of good quality without density irregularity between dots, with no deterioration of service life caused by overheating. CONSTITUTION:The printing data is output from a memory device 2, and then compared and operated with the printing data in the lateral direction by an operating circuit 3. In the case, for example, where the printing data of three dots continues in the lateral direction synchronously with a clock signal 5, two dots at both ends are pre-heated first, and then all of the three dots are heated for printing. Accordingly, the temperature balance of all the dots of a line thermal head 4 can be maintained.
Bibliography:Application Number: JP19910169946