Patent ID: 8537382

Claim:
An image forming apparatus comprising: a data signal monitor that monitors a communication state of a data signal in the image forming apparatus; a controller that, when the data signal monitor detects that the communication state of the data signal is abnormal, delays communication of the data signal such that the communication of the data signal is not performed during a previously determined time including a time point at which the communication state of the data signal has become abnormal due to an operation of the image forming apparatus; and a memory that, when the data signal monitor detects that the communication state of the data signal is abnormal, stores the operation of the image forming apparatus in which the state has been changed, wherein when a number of times that the operation of the image forming apparatus in which the state has been changed is stored in the memory exceeds a previously determined threshold value, the controller delays the communication of the data signal during previously set time for the operation of the image forming apparatus in which the state has been changed, and wherein in a case when the number of times that the operation of the image forming apparatus in which the state has been changed is stored in the memory exceeds the previously determined threshold value, when time obtained by subtracting the previously set time for the operation of the image forming apparatus in which the state has been changed from previously set communication time for a previously determined data amount is shorter than time required for the communication for the previously determined data amount, the controller reduces the previously set time for the operation of the image forming apparatus in which the state has been changed.