Abstract: A liquid discharge apparatus according to an aspect of the present disclosure is a liquid discharge apparatus for forming an image on a recording medium, the liquid discharge apparatus including a first image obtaining unit configured to obtain first image data, a second image generating unit configured to generate second image data by adding a predetermined figure to the first image data, a correcting unit configured to generate third image data obtained by correcting, for each of pages, the first image data, based on the second image data and read image data obtained by reading an image formed on the recording medium based on the second image data, and a liquid discharging unit configured to discharge liquid onto the recording medium, based on the third image data.

Abstract: A printing apparatus includes a printing device to print, on a sheet, a detection mark for acquiring an amount of deviation of an image, a detection device to read a position of the detection mark and acquire the amount of deviation of the position of the detection mark, and control circuitry to perform correction according to the amount of deviation. The circuitry prints the detection marks on both faces of the sheet in duplex printing, reads the detection marks on both faces with the detection device, calculates a first correction value from the position of the detection mark on a first face on which printing is performed first, calculates a second correction value from the position of the detection mark on a second face on which printing is performed later, and calculates a third correction value from the positions of the detection marks on the first and second faces.

Abstract: A printing apparatus includes a printing device to print, on a sheet, a detection mark for acquiring an amount of deviation of an image, a detection device to read a position of the detection mark and acquire the amount of deviation of the position of the detection mark, and control circuitry to perform correction according to the amount of deviation. The circuitry prints the detection marks on both faces of the sheet in duplex printing, reads the detection marks on both faces with the detection device, calculates a first correction value from the position of the detection mark on a first face on which printing is performed first, calculates a second correction value from the position of the detection mark on a second face on which printing is performed later, and calculates a third correction value from the positions of the detection marks on the first and second faces.

Abstract: A disclosed human body detecting device includes a human body detector configured to detect a human body, and an electric power supply status switching part configured to switch a first shifting mode to a second shifting mode when the human body detecting device is not operated, and the human body detector continuously detects the human body for a predetermined time. The first shifting mode indicates a first status shifting to a second status based on a first condition in which the human body is detected by the human body detector, the second status representing electric energy consumption less than electric energy consumption of the first status, and the second shifting mode indicates the first status shifting to the second status based on a second condition other than the first condition.

Abstract: A disclosed human body detecting device includes a human body detector configured to detect a human body, and an electric power supply status switching part configured to switch a first shifting mode to a second shifting mode when the human body detecting device is not operated, and the human body detector continuously detects the human body for a predetermined time. The first shifting mode indicates a first status shifting to a second status based on a first condition in which the human body is detected by the human body detector, the second status representing electric energy consumption less than electric energy consumption of the first status, and the second shifting mode indicates the first status shifting to the second status based on a second condition other than the first condition.