Image forming apparatus and control method for an image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorMasashi Yokoyama
Life of this patent
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Abstract
An image forming apparatus is configured to determine that a toner container was replaced during power off in a case where identification information acquired from a toner container and identification information stored in a nonvolatile memory do not match each other when power is turned on. In a case where the replaced toner container does not satisfy a replacement condition and does not contain a black toner, the image forming apparatus permits the execution of printing in a monochrome print mode, and suspends the execution of printing in the color print mode.
Claims14
An image forming apparatus, comprising:
- an image forming unit configured to form an image on a sheet,
- the image forming unit including:
- a first developing unit configured to develop a color image using developer of a chromatic color;
- and
- a second developing unit configured to develop a black image using developer of black;
- a first mount, to which a first container is to be mounted,
- the first container being configured to contain the developer of the chromatic color;
- a second mount, to which a second container is mounted,
- the second container being configured to contain the developer of black;
- a replenishment mechanism configured to replenish the first developing unit with the developer of the chromatic color from the mounted first container, and replenish the second developing unit with the developer of black from the mounted second container;
- and
- a controller configured to:
- determine whether the first container is required to be replaced;
- suspend, in a case where it is not determined that the first container is required to be replaced and the first container is replaced by another first container, image formation for the color image performed by the image forming unit;
- and
- permit, in a case where it is not determined that the first container is required to be replaced and the first container is replaced by the another first container, image formation for the black image performed by the image forming unit.
A control method for an image forming apparatus,
- the image forming apparatus including:
- an image forming unit configured to form an image on a sheet,
- the image forming unit including:
- a first developing unit configured to develop a color image using developer of a chromatic color;
- and
- a second developing unit configured to develop a black image using developer of black;
- a first mount, to which a first container is to be mounted,
- the first container being configured to contain developer of a chromatic color;
- a second mount, to which a second container is to be mounted,
- the second container being configured to contain the developer of black;
- a replenishment mechanism configured to replenish the first developing unit with the developer of the chromatic color from the mounted first container, and replenish the second developing unit with the developer of black from the mounted second container;
- and
- a controller,
- the control method, which is executed by the controller, comprising:
- determining whether the first container is required to be replaced;
- suspending, in a case where it is not determined that the first container is required to be replaced and the first container is replaced by another first container, image formation for the color image performed by the image forming unit;
- and
- permitting, in a case where it is not determined that the first container is required to be replaced and the first container is replaced by the another first container, image formation for the black image performed by the image forming unit.
Dependencies are inferred from the claim text.