In some examples, a non-transitory machine readable medium can include instructions executable by a processing resource to assert a low print media level notification responsive to determination that a first amount of print media in a media receptacle of an imaging device is less than a set value, detect a second amount of print media in the media receptacle of the imaging device, compare the detected second amount of print media to a print media threshold that is based on the set value and a selectable print media value, and maintain the low print media level notification responsive to a determination that the detected second amount of print media is less than the print media threshold.

A sheet sorting apparatus comprising a first tray, a second tray, a conveyance unit, a tray detection unit, a stacking amount detection unit, and a control unit configured to control the conveyance unit to not convey the sheet to the second tray, in a case where the stacking amount detection unit detects that the amount of sheets reaches the predetermined amount, wherein the control unit is configured to permit the conveyance unit to convey the sheet to the second tray, in a case where the tray detection unit detects that the first tray is detached from the apparatus main body in a state where the stacking amount detection unit detects that the amount of sheets reaches the predetermined amount and conveyance of the sheet to the second tray by the conveyance unit is stopped.

A sheet stacking device includes a stacker, a detector, a blower, and a moving device. A sheet is stacked on the stacker. The detector detects a stacking amount of the sheet on the stacker. The blower blows air to the sheet stacked on the stacker. The moving device moves the blower with respect to the stacker based on the stacking amount of the sheet detected by the detector.

A sheet sorting apparatus comprising a first tray, a second tray, a conveyance unit, a tray detection unit, a stacking amount detection unit, and a control unit configured to control the conveyance unit to not convey the sheet to the second tray, in a case where the stacking amount detection unit detects that the amount of sheets reaches the predetermined amount, wherein the control unit is configured to permit the conveyance unit to convey the sheet to the second tray, in a case where the tray detection unit detects that the first tray is detached from the apparatus main body in a state where the stacking amount detection unit detects that the amount of sheets reaches the predetermined amount and conveyance of the sheet to the second tray by the conveyance unit is stopped.

In some examples, a non-transitory machine readable medium can include instructions executable by a processing resource to assert a low print media level notification responsive to determination that a first amount of print media in a media receptacle of an imaging device is less than a set value, detect a second amount of print media in the media receptacle of the imaging device, compare the detected second amount of print media to a print media threshold that is based on the set value and a selectable print media value, and maintain the low print media level notification responsive to a determination that the detected second amount of print media is less than the print media threshold.

An image forming system includes an image forming unit, a plurality of drive units configured to drive the image forming unit, a sound detection unit configured to detect operation sounds of the plurality of drive units, and a control unit configured to implement a drive mode for operating at least one of the plurality of drive units and not operating other drive units, without forming an image on a recording material by the image forming unit, wherein the control unit implements the drive mode when the value of a counter reaches a threshold value, the counter being incremented with each image formation on a recording material by the image forming unit, and wherein the identification operation identifies a component causing the predetermined sound based on the operation sounds detected by the sound detection unit during a period in which the drive mode is being implemented.

An image forming apparatus includes a storage, circuitry, and an information provider. The storage is configured to temporarily store one or more sheets to be removed without being used in the image forming apparatus. The circuitry is configured to determine whether a manual operation is performed on the image forming apparatus and whether the one or more sheets stored in the storage exceed a given value in number or height. The information provider is configured to provide information urging removal of the one or more sheets from the storage in response to determination by the circuitry that the manual operation is performed and that the one or more sheets stored in the storage exceed the given value in number or height.

A sheet stacking device includes a stacker, a detector, a blower, and a moving device. A sheet is stacked on the stacker. The detector detects a stacking amount of the sheet on the stacker. The blower blows air to the sheet stacked on the stacker. The moving device moves the blower with respect to the stacker based on the stacking amount of the sheet detected by the detector.

An image forming apparatus sequentially outputs on a discharge tray a sheet medium on which an image based on printing data is formed and includes a counting portion and a control portion. The counting portion counts the number of sheet medium output on the discharge tray. The control portion, when the count number of the sheet medium counted by the counting portion exceeds a prescribed threshold value, issues a warning to a user and/or interrupts output of sheet medium to the discharge tray, infers based on the printing data whether the attended time after the sheet medium is output to the discharge tray until they are removed is short or not, and, after outputting the printing data of which the unattended time is inferred to be short, decrements the count number.

An image forming apparatus includes a unit group including a specific unit having a specific component that performs an operation necessary for notification of paper remaining on a mounting surface; and a processor configured to control supply of power to the unit group at a return from a sleep state based on a return event, in which the processor is configured to in a case where there is no paper on the mounting surface at a transition to the sleep state, perform first control to supply power to a specified power supply destination corresponding to the return event at the return from the sleep state, and in a case where there is a paper on the mounting surface at the transition to the sleep state, perform second control to supply power to the specific unit at the return from the sleep state even in a case where the specific unit is not included in the specified power supply destination of the unit group.