Patent ID: 8437648

Claim:
An image forming apparatus from which toner container containers of a plurality of colors and a black toner are detachable, including a development device to which toner in the toner container is fed and in which the toner used for image formation is accumulated, and a display, comprising: a locking unit configured to lock a cover of each of the toner containers so that the mounted toner container is not extracted; a detection unit configured to detect that there is no toner in the mounted toner container; and a display unit configured, when the detection unit detects that there is no toner, to cause the display to display a replacement screen to receive input for replacing the toner container in which no toner is detected; wherein, in a case where the detection unit detects that the toner container of the black toner contains no toner, the display unit displays the replacement screen to prompt replacement of the toner container of the black toner and, in response to the input received via the screen displayed by the display unit to make replaceable the toner container in which no toner is detected, the locking unit unlocks the cover of the toner container of the black toner, and wherein in a case where the detection unit detects that the toner container of a color toner contains no toner but does not detect that the toner container of the black toner contains no toner, the display unit does not display the replacement screen until an input for displaying the replacement screen by a user is received.