A liquid surface detector includes an electrode pad, a coil, a memory, and a detection control circuit. The electrode pad is attached to an outer side surface of a tank of the image forming apparatus. The coil is connected to the electrode pad. The memory stores initial values. The detection control circuit determines a capacitance (first capacitance) of a first resonance circuit including the coil and the tank with the electrode pad. When determining a liquid surface level value, the detection control circuit subtracts an error value from the first capacitance so as to determine a first corrected capacitance, and determines the liquid surface level value based on the first corrected capacitance and the initial value.

A printing device includes: a printing unit; and a controller. The printing unit is configured to print an image on a print medium. The controller is configured to perform: (a) receiving; (b) transmitting; (c) receiving; and (d) transmitting. The (a) receiving receives a print job from an external device. The (b) receiving receives a print job from an external device. The (b) transmitting transmits the print job to a data processing server. The (c) receiving receives, from the external device, destination information representing a destination of payment information of a fee required for executing the print job with the printing unit. The (d) transmitting transmits the destination information to the data processing server to cause the data processing server to provide the payment information to the external device.

A printing device includes a controller configured to perform: (a) storing identification information and transmission address information in association with each other; (b) acquiring, in response to receiving a print job together with the identification information from an external device, the transmission address information stored in association with the identification information in the (a) storing on the basis of the received identification information; and (c) transmitting the transmission address information acquired in the (b) acquiring to a data processing server so that payment process information is transmitted to a transmission address corresponding to the transmission address information, the payment process information being information to pay a fee charged for performing printing based on the received print job.

A printing apparatus includes, in a printing apparatus main body, a cover configured to open and close a housing portion configured to house a recording medium, and a first support shaft and a second support shaft configured to rotatably support the cover. The first support shaft is disposed in a position closer to the printing unit than to the housing portion, and the second support shaft is disposed in a position farther from the printing unit than from the housing portion. The cover is configured such that, when displaced from a closed position in a first direction, the cover is rotationally movable around the first support shaft up to a first open position, and that, when the cover is displaced from the closed position in a second direction, the cover is rotationally movable around the second support shaft up to a second open position.

A multifunctional peripheral (1) includes a communication part (22), a storage part (21), a free space determination part (25), a confidential document determination part (26), and a storage processing part (27). The free space determination part (25) determines that the storage part (21) contains a free space for storing print data, as a first storage condition. The confidential document determination part (26) determines that the print data is not a confidential document, as a second storage condition. The storage processing part (27) stores the print data in the storage part (21) in association with user information of a user terminal (23) when the first storage condition and the second storage condition are satisfied, and communicates with the user terminal (23) and stores the print data in the user terminal (23) when the first storage condition is not satisfied or when the second storage condition is not satisfied.

A multifunctional peripheral (1) includes a communication part (22), a storage part (21), a free space determination part (25), a confidential document determination part (26), and a storage processing part (27). The free space determination part (25) determines that the storage part (21) contains a free space for storing print data, as a first storage condition. The confidential document determination part (26) determines that the print data is not a confidential document, as a second storage condition. The storage processing part (27) stores the print data in the storage part (21) in association with user information of a user terminal (23) when the first storage condition and the second storage condition are satisfied, and communicates with the user terminal (23) and stores the print data in the user terminal (23) when the first storage condition is not satisfied or when the second storage condition is not satisfied.

A printer for direct printing on a print substrate comprises a front support supporting a printing device; the front support to be arranged at a front side of a print substrate and to be aligned relative to a rear support across the print substrate in a contact-less manner.

A printer for direct printing on a print substrate comprises a front support supporting a printing device; the front support to be arranged at a front side of a print substrate and to be aligned relative to a rear support across the print substrate in a contact-less manner.

A compensation method includes determining position information of an abnormal nozzle of an inkjet head; acquiring printing parameters, determining first data corresponding to the abnormal nozzle, and based on the position information of the abnormal nozzle and the printing parameters, determining position information of a compensation nozzle for compensating the first data corresponding to the abnormal nozzle; and based on the printing parameters, acquiring second data of the compensation nozzle in a normal printing state which includes ink out data and ink holding data, determining an address of the ink holding data, and generating compensation data by writing the first data into the address of the ink holding data. A compensation device includes: an abnormal nozzle position determination module; a compensation nozzle position determination module; and a compensation data generation module. An inkjet printer includes: a controlling unit, an inkjet head unit, and a nozzle compensation unit.

A compensation method includes determining position information of an abnormal nozzle of an inkjet head; acquiring printing parameters, determining first data corresponding to the abnormal nozzle, and based on the position information of the abnormal nozzle and the printing parameters, determining position information of a compensation nozzle for compensating the first data corresponding to the abnormal nozzle; and based on the printing parameters, acquiring second data of the compensation nozzle in a normal printing state which includes ink out data and ink holding data, determining an address of the ink holding data, and generating compensation data by writing the first data into the address of the ink holding data. A compensation device includes: an abnormal nozzle position determination module; a compensation nozzle position determination module; and a compensation data generation module. An inkjet printer includes: a controlling unit, an inkjet head unit, and a nozzle compensation unit.