Patent ID: 8138681
Filing Date: 2012-03-20
Classification: B41J,G06K,H05B

Abstract:
1. A driving circuit, comprising: a drive transistor configured to supply a drive electric current to record elements to construct an array so that the drive electric current drives the record elements; a reference electric current generating circuit configured to generate a reference electric current and a control voltage according to a reference voltage, so that the generated reference electric current and the generated control voltage respectively control the drive electric current and the drive transistor; and a control voltage output section configured to input a drive signal and output the generated control voltage according to the drive signal, wherein the drive transistor is composed of a first drive transistor and a second drive transistor that are connected in series; and the reference electric current generating circuit includes: wherein the first drive transistor is configured to receive at a control terminal thereof the control voltage outputted from control voltage output section, and operate according to the received control voltage; and the second drive transistor is configured to receive at a control terminal thereof a drive electric current ON/OFF signal to control on/off of the drive electric current, and operate according to the received drive electric current ON/OFF signal.