A sheet safekeeping apparatus comprises a multistage tray in which a plurality of housing sections for accommodating sheets is arranged in a first direction, a removal port through which the accommodated sheet is taken out being formed in each of the plurality of the housing sections, and a cover configured for to close the removal port in an openable manner being provided in each of the plurality of the housing sections; a support section configured to support the multistage tray; a tray displacement unit configured to displace the multistage tray in the first direction with the support section; a conveyance unit configured to convey a sheet to the plurality of the housing sections; and a cover displacement unit configured to displace the cover of one housing section determined by an operation of the tray displacement unit among the plurality of the housing sections to open the removal port.

A sheet safekeeping apparatus comprises a multistage tray in which a plurality of housing sections for accommodating sheets is arranged in a first direction, a removal port through which the accommodated sheet is taken out being formed in each of the plurality of the housing sections, and a cover configured for to close the removal port in an openable manner being provided in each of the plurality of the housing sections; a support section configured to support the multistage tray; a tray displacement unit configured to displace the multistage tray in the first direction with the support section; a conveyance unit configured to convey a sheet to the plurality of the housing sections; and a cover displacement unit configured to displace the cover of one housing section determined by an operation of the tray displacement unit among the plurality of the housing sections to open the removal port.

Provided is an image forming system capable of reliably preventing others from removing and taking printed matter even though printing is executed beforehand. The confidential notation reading unit reads a confidential notation. The user storage tray has a structure from which outputted printed matter cannot be removed unless the opening/closing door is opened. The locking mechanism locks the opening/closing door. The sorting mechanism sorts the printed matter outputted from the image forming apparatus and outputs the printed matter to either the open tray or the user storage tray. The sorting control unit outputs printed matter to which a confidential notation is not added to the open tray, and outputs a printed matter to which a confidential notation is added to the user storage tray, respectively.

Provided is an image forming system capable of reliably preventing others from removing and taking printed matter even though printing is executed beforehand. The confidential notation reading unit reads a confidential notation. The user storage tray has a structure from which outputted printed matter cannot be removed unless the opening/closing door is opened. The locking mechanism locks the opening/closing door. The sorting mechanism sorts the printed matter outputted from the image forming apparatus and outputs the printed matter to either the open tray or the user storage tray. The sorting control unit outputs printed matter to which a confidential notation is not added to the open tray, and outputs a printed matter to which a confidential notation is added to the user storage tray, respectively.

In accordance with an embodiment, a sheet removal determination system has a first detection device to detect a sheet discharged to a discharge port; a second detection device to detect a terminal device positioned within a communication enabled range of the second detection device; and a controller to determine whether or not a user is authorized user based on user information acquired from the terminal device detected by the second detection device, determine that the sheet has been improperly removed if the user is not the authorized user and the second detection device detects the terminal device and a quantity of the sheets is less than that of the sheets before detection after the sheet is detected by the first detection device, and detect the terminal device again with the second detection device if the second detection device detects the terminal device and a quantity of the sheets is increasing than that of the sheets before detection after the sheet is detected by the first detection device.

In accordance with an embodiment, a sheet removal determination system has a first detection device to detect a sheet discharged to a discharge port; a second detection device to detect a terminal device positioned within a communication enabled range of the second detection device; and a controller to determine whether or not a user is authorized user based on user information acquired from the terminal device detected by the second detection device, determine that the sheet has been improperly removed if the user is not the authorized user and the second detection device detects the terminal device and a quantity of the sheets is less than that of the sheets before detection after the sheet is detected by the first detection device, and detect the terminal device again with the second detection device if the second detection device detects the terminal device and a quantity of the sheets is increasing than that of the sheets before detection after the sheet is detected by the first detection device.

In accordance with an embodiment, a sheet taking away determination system comprises a first detection device configured to detect a sheet discharged to a discharge port; a second detection device configured to detect a terminal device positioned within a communication enabled range of the second detection device; and a controller configured to determine that the sheet is taken away if the second detection device detects the terminal device and a quantity of the sheets is less than that of the sheets before detection after the sheet is detected by the first detection device.

In accordance with an embodiment, a sheet taking away determination system comprises a first detection device configured to detect a sheet discharged to a discharge port; a second detection device configured to detect a terminal device positioned within a communication enabled range of the second detection device; and a controller configured to determine that the sheet is taken away if the second detection device detects the terminal device and a quantity of the sheets is less than that of the sheets before detection after the sheet is detected by the first detection device.

In accordance with an embodiment, a sheet taking away determination system comprises a first detection device configured to detect a sheet discharged to a discharge port; a second detection device configured to detect a terminal device positioned within a communication enabled range of the second detection device; and a controller configured to determine that the sheet is taken away if the second detection device detects the terminal device and a quantity of the sheets is less than that of the sheets before detection after the sheet is detected by the first detection device.

In accordance with an embodiment, a sheet taking away determination system comprises a first detection device configured to detect a sheet discharged to a discharge port; a second detection device configured to detect a terminal device positioned within a communication enabled range of the second detection device; and a controller configured to determine that the sheet is taken away if the second detection device detects the terminal device and a quantity of the sheets is less than that of the sheets before detection after the sheet is detected by the first detection device.