Image formation device using an I2C bus and a control method thereof

A control method of an image formation device having at least one detection sensor for detecting operation states of peripheral devices, a A/D conversion unit for converting detection result signals into digital signals, a slave device for separating and storing the detection result signals by detection sensor, and a master device connected to the slave devices through a serial bus, for controlling the slave devices, the control method comprising steps of:

• using the detector sensor to detect the operation states of the peripheral devices;
• using the A/D conversion unit to convert the detection result signals into the digital signals by the at least one detection sensor;
• using the slaves devices to separate and store by detection sensor the detection result signals converted into the digital signals;
• deciding whether to receive a detection result request signal of at least one detection sensor from the master device;
• and
• sending to the master device the detection result signals corresponding to the detection result request signal if it is decided that the detection result request signal is received in the decision step.