A printing device, includes a printer that prints onto a printing medium that is conveyed along a reference direction by a conveyer; and a controller that controls the printer to print a print pattern onto the printing medium along the reference direction. The controller controls to forbid the printer to execute printing when a temperature of the printer is projected to become equal to or higher than a set temperature if the printer prints onto the printing medium using a printing length of the print pattern along the reference direction, the printing length being a length of at least a portion of the print pattern along the reference direction.

According to one embodiment, a tablet printing apparatus includes: a conveyor belt configured to convey a tablet; a print head configured to perform printing on the tablet conveyed by the conveyor belt; and a belt-position detector configured to detect the position of the conveyor belt in a direction crossing the conveying direction of the tablet in a horizontal plane. The conveyor belt includes a plurality of holes arranged in a row along the conveying direction of the tablet to hold the tablet. The belt-position detector includes an imaging device configured to capture an image of two or more of the holes; and an image processing device configured to detect the position of the conveyor belt in the crossing direction based on the image captured by the imaging device.

According to one embodiment, a tablet printing apparatus includes: a conveyor belt configured to convey a tablet; a print head configured to perform printing on the tablet conveyed by the conveyor belt; and a belt-position detector configured to detect the position of the conveyor belt in a direction crossing the conveying direction of the tablet in a horizontal plane. The conveyor belt includes a plurality of holes arranged in a row along the conveying direction of the tablet to hold the tablet. The belt-position detector includes an imaging device configured to capture an image of two or more of the holes; and an image processing device configured to detect the position of the conveyor belt in the crossing direction based on the image captured by the imaging device.

A diaphragm pump, a pump unit and an inkjet printer are provided. A housing of the diaphragm pump includes: a circular supporting groove portion for supporting a supported portion, and a passage opening for passing the supported portion to the supporting groove portion in a direction indicated by an arrow, where a shape of an outer edge of a cross section of the supported portion orthogonal to the direction indicated by an arrow is a shape of an outer edge of a circle in which a part of the outer edge is missing. A width of the passing opening at a coupling portion of the supporting groove portion and the passing opening is greater than or equal to a minimum width of the supported portion in the direction orthogonal to the direction indicated by the arrow and smaller than a maximum width of the supported portion in the relevant direction.

A control system is configured such that a carriage that a processing head is mounted is driven by a motor and reciprocates. The motor is controlled by a controller. The controller reciprocates the carriage by selecting a control mode as a target mode based on temperature information related to temperature of the motor and controlling the motor in the target mode. The controller selects the target mode to be applied to the control of the motor for each of particular work units. The target mode is selected from a group of particular control modes. Each control mode in the group of particular control modes is a control mode in which a maximum temperature, which is estimated based on the temperature information, when the control of the motor using the selected control mode would be executed until the processing is completed, is less than a reference value.

A control system is configured such that a carriage that a processing head is mounted is driven by a motor and reciprocates. The motor is controlled by a controller. The controller reciprocates the carriage by selecting a control mode as a target mode based on temperature information related to temperature of the motor and controlling the motor in the target mode. The controller selects the target mode to be applied to the control of the motor for each of particular work units. The target mode is selected from a group of particular control modes. Each control mode in the group of particular control modes is a control mode in which a maximum temperature, which is estimated based on the temperature information, when the control of the motor using the selected control mode would be executed until the processing is completed, is less than a reference value.

A liquid discharge apparatus includes a holder, a pre-treatment head, a smoother, and a print head. The holder reciprocally moves while holding a recording medium. The pre-treatment head discharges a pre-treatment liquid onto a surface of the recording medium held by the holder. The smoother smooths the pre-treatment liquid, which is discharged onto the surface of the recording medium, along the surface of the recording medium by a movement of the holder. The print head discharges a printing liquid onto the surface of the recording medium with the pre-treatment liquid smoothed.

A liquid discharge apparatus includes a holder, a pre-treatment head, a smoother, and a print head. The holder reciprocally moves while holding a recording medium. The pre-treatment head discharges a pre-treatment liquid onto a surface of the recording medium held by the holder. The smoother smooths the pre-treatment liquid, which is discharged onto the surface of the recording medium, along the surface of the recording medium by a movement of the holder. The print head discharges a printing liquid onto the surface of the recording medium with the pre-treatment liquid smoothed.

A diaphragm pump, a pump unit and an inkjet printer are provided. A housing of the diaphragm pump includes: a circular supporting groove portion for supporting a supported portion, and a passage opening for passing the supported portion to the supporting groove portion in a direction indicated by an arrow, where a shape of an outer edge of a cross section of the supported portion orthogonal to the direction indicated by an arrow is a shape of an outer edge of a circle in which a part of the outer edge is missing. A width of the passing opening at a coupling portion of the supporting groove portion and the passing opening is greater than or equal to a minimum width of the supported portion in the direction orthogonal to the direction indicated by the arrow and smaller than a maximum width of the supported portion in the relevant direction.

A printer includes a detection unit configured to detect an error, a storage unit configured to store in itself error information corresponding to the error, a communication unit configured to communicate with an external apparatus, a printing unit configured to perform printing on a printing medium, and a control unit.