Patent ID: 7181149

Claim:
An apparatus for forming an image on a recording medium, comprising: a main power switch to turn ON/OFF an AC power source to be supplied into said apparatus; a DC power current generating section to convert AC power current, fed from said AC power source, to DC power current; an overall-controlling section to control overall operations of said apparatus; an engine-controlling section to conduct a predetermined controlling operation among controlling operations to be conducted in said apparatus; a first power-controlling section, included in said overall-controlling section; and a second power-controlling section, having a starting time shorter than that of said first power-controlling section; wherein, when said main power switch is turned ON, said DC power current generating section supplies a first DC power current to both a part of said overall-controlling section including said first power-controlling section and said second power-controlling section, so as to commence to activate them, and then, said second power-controlling section generates a power controlling signal after a sub-power supply switch is turned ON, so as to input said power controlling signal into said DC power current generating section; and wherein, based on said power controlling signal inputted from said second power-controlling section, said DC power current generating section generates a second DC power current, and then, supplies said second DC power current into both another residual part of said overall-controlling section and said engine-controlling section so as to activate them; and wherein said overall-controlling section is activated by said second DC power current, fed from said DC power current generating section, after said initial settings of said first power-controlling section are completed, and then, said first power-controlling section controls said DC power current, outputted from said DC power current generating section, after initial settings of said overall-controlling section are completed.