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

Voltage range
±10 kV
Current
±2 mA
Power
20 W
Constant voltage/Constant current High voltage Amplifier

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

AMS/AMT series

AMS/AMT series

Voltage range
±0.6 to ±10 kV
Current
±2 to ±100 mA
Power
20 to 200 W
Fast response High voltage Amplifier

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

AMP series

AMP series

voltage range
±0.6 to ±40 kV
current
±0.01 to ±2 A
power
0.1 to 1.2 kW
High-speed High-voltage Amplifier

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

AU series

AU series

voltage range
1 to 120 kV
current
0.25 to 2200 mA
power
30 to 2200 W
Low profile and lightweight
High voltage power supply

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

RA/RB series

RA/RB series

voltage range
0.3 to 40 kV
current
0.12 to 200 mA
power
5 to 60 W
High power & Low Noise High Voltage Power Supplies

High reliability design with various protections

JB series

JB series

voltage range
0.3 to 2 KV
current
1 to 8 mA
power
1.8 to 2.5 W
High Voltage Power Supply for PMT

High power and Low noise

J4/J6 series

J4/J6 series

voltage range
0.5 to 5 kV
current
0.5 to 8 mA
power
2.5 to 6W
High Voltage Power Supply for PMT

Ideal for photo tubes, GM tubes, and radiation counters

AMJ series

AMJ series

Voltage range
±0.5 to ±4 kV
Current
±10 to ±80 mA
Power
20 to 40 W
Compact and Fast Response
High voltage Amplifier

High speed response 75 kHz, DC bias function