INK-JET DRIVING CIRCUIT

• Main Authors: PAEK, SEUNG HYUCK, GORULKODMITRY, SEO, SANG CHUL, JIN, SANG YOUNG, JU, RI A, PYO, YOUNG HAK
• Format: Patent
• Language: English; Korean
• Published: 26.08.2010
• 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

PURPOSE: An ink jet driver circuit is provided to control the ejection quantity of ink which flows through a nozzle by controlling head driving voltage. CONSTITUTION: An ink jet driver circuit comprises a digital variable resistor, a first current generator(Q1) and a second current source(Q2). The digitally variable resistor controls the rising slope and the falling slope of the head driving voltage outputted to the output terminal. The first current generator is electrically connected between the digitally variable resistor and output terminal. The second current source is electrically connected to the output terminal and the first current generator. The rise time of the head driving voltage is controlled according to the first pulse. The fall time of the head driving voltage is controlled according to the secondary pulse.