Electrophotography (also known as xerography) refers to the printing technology used in laser printers, copiers, and fax machines. The process of printing involves the following steps.

  • Step 1: The image to be printed is drawn (lasered) onto a laser charged drum.
  • Step 2: The part of the charged drum that has been irradiated by the laser drops in voltage.
  • Step 3: When the charged toner is brought close to the drum, the toner will adhere to the area with lower voltage (the area irradiated by the laser).
  • Step 4. This toner is then transferred to the paper and fixed to the paper using heat and pressure.

Matsusada Precision's high-voltage amplifiers are used in the development and manufacturing of each electrophotographic process.

Our COR series precisely controls the current in the photoreceptor drum and realizes charging of the photoreceptor drum by balanced corona discharge.

photoreceptor drum
Related words:
  • Photoconductor
  • Paper charge
  • Developer roller
  • Corona charging and discharging
  • Primary charging roller
  • Corotron-Corona discharge generator
  • Scorotron-Corona discharge generator

Recommended products

COR series

COR series

output voltage
0 to ±10kV
output current
0 to ±2mA
output power
0 to 20W
Constant voltage/Constant current

CC, CV and High Voltage amplifier in one unit, Four-quadrants output, Fast response

AMS/AMT series

AMS/AMT series

output voltage
0 to ±20kV
output current
0 to ±200W
output power
0 to 100mA
Fast response of slew rate 360V/µs

High speed response 360 V/µs, DC bias function, Various types of output wave forms according to the input wave

AMP series

AMP series

output voltage
0 to ±40 kV
output current
0 to ±2A
output power
0 to 1.2kW
Fast response of slew rate 700 V/µ s

Slew rate with actual load is as high as 700 V/µs.

AU series

AU series

output voltage
0 to +120kV/-120kV
output current
0 to 2.2A
output power
0 to 2.2kW
Low profile and lightweight

Digital interface is available.Wide lineup of over 300 models, Various remote control and monitor functions

RA/RB series

RA/RB series

output voltage
0 to 40 kV
output current
0 to 200 mA
output power
0 to 60 W
High power & Low Noise High Voltage Power Supplies

High reliability design with various protections

JB series

JB series

output voltage
0 to 2kV
output power
0 to 2.5W
output current
0 to 8mA
High Voltage Power Supply for PMT

High power and Low noise

J4/J6 series

J4/J6 series

output voltage
0 to 5kV
output current
0 to 8mA
output power
6W Max
High Voltage Power Supply for PMT

Ideal for photo tubes, GM tubes, and radiation counters

AMJ series

AMJ series

output voltage
0 to ±4kV
output current
0 to ±80mA
output power
0 to 40W
Ultra Compact and Fast Response

High speed response 75kHz, DC bias function