Thermal printer

Details Thermal printer Thermal printer

1994-09-23

1996-09-24

Tran, Huan H.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Having driving circuitry for recording means

347171, 347194, 347193, B41J 232, B41J 2325, B41J 2355, B41J 2365

Patent

active

055595472

ABSTRACT:
The invention is directed to a thermal printer, with a thermal print head having a series of electrically drivable heating elements, with a microprocessor transferring data to be printed into a register associated with the thermal print head. In order to increase the printing speed, a buffer storage connected to the microprocessor via a parallel data line as well as a separate load state monitoring circuit are proposed, the monitoring circuit being connected to the buffer storage and causing data to be transferred from the buffer storage into the register when the data written into the buffer storage from the microprocessor has reached a defined quantity. As an alternative or addition, it is recommended to insert a pulse generator and a stepping motor driver between the output of the microprocessor and the stepping motor for driving the platen roll.

REFERENCES:
patent: 5208607 (1993-05-01), Ohashi et al.

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