Method for cleaning thermal printing head

Details Method for cleaning thermal printing head Method for cleaning thermal printing head

1997-08-27

2000-03-14

Tran, Huan

Incremental printing of symbolic information

Thermal marking apparatus or processes

347186, B41J 2917, B41J 238

Patent

active

060379588

ABSTRACT:
A method for cleaning a thermal printing head, particularly in use for perforating stencil sheets, is provided, which does not require a special stencil sheet nor damage the thermal printing head, but makes it possible to remove deposits as required. The method is a method for cleaning a thermal printing head having a plurality of heating elements arranged transversely to a direction in which an article to be recorded is conveyed, which comprises heating and softening deposits appearing in the vicinity of said heating elements, and conveying a sheet in the above direction while said sheet is kept in contact with said heating elements so that said softened deposits are moved downwardly in the above direction. Said sheet may be a stencil sheet, and preferably the heating elements are all turned on to heat and soften deposits, so as to make perforations for solid printing in said stencil sheet.

REFERENCES:
patent: 4947190 (1990-08-01), Mizusawa
patent: 5030292 (1991-07-01), Koike
patent: 5559545 (1996-09-01), Fuwa

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