A printing apparatus includes a printhead configured to perform a print operation on a print medium, a conveyance unit configured to convey the print medium to a position facing the printhead, and a sensor for detecting occurrence of jam of the print medium conveyed by the conveyance unit. A supply unit is configured to supply, to the printhead, a voltage which is used to perform the print operation, and a power line is provided for connecting the printhead and the supply unit. A monitor unit is configured to monitor a voltage appearing on the power line, and a control unit is configured to perform a detection operation for detecting the voltage monitored by the monitor unit in a case that the supply unit supplies the voltage. The control unit performs the detection operation in a case that the sensor detects that the jam has occurred.

A printing apparatus includes a printhead configured to perform a print operation on a print medium, a conveyance unit configured to convey the print medium to a position facing the printhead, and a sensor for detecting occurrence of jam of the print medium conveyed by the conveyance unit. A supply unit is configured to supply, to the printhead, a voltage which is used to perform the print operation, and a power line is provided for connecting the printhead and the supply unit. A monitor unit is configured to monitor a voltage appearing on the power line, and a control unit is configured to perform a detection operation for detecting the voltage monitored by the monitor unit in a case that the supply unit supplies the voltage. The control unit performs the detection operation in a case that the sensor detects that the jam has occurred.

A printing apparatus that includes a printhead and a carriage can perform a detection operation for detecting a voltage to determine whether current leakage occurs. The printing apparatus includes a supply unit configured to supply, to the printhead, a voltage which is used to perform the print operation, a power line for connecting the printhead and the supply unit, a monitor unit configured to monitor a voltage appearing on the power line, and a control unit configured to perform a detection operation for detecting the voltage monitored by the monitor unit. The control unit performs the detection operation in a case that a movement of the carriage is reversed, in a case that a sensor detects that a jam has occurred, in case where the printhead is mounted to the carriage, or after and before a cleaning operation.

A printing apparatus that includes a printhead and a carriage can perform a detection operation for detecting a voltage to determine whether current leakage occurs. The printing apparatus includes a supply unit configured to supply, to the printhead, a voltage which is used to perform the print operation, a power line for connecting the printhead and the supply unit, a monitor unit configured to monitor a voltage appearing on the power line, and a control unit configured to perform a detection operation for detecting the voltage monitored by the monitor unit. The control unit performs the detection operation in a case that a movement of the carriage is reversed, in a case that a sensor detects that a jam has occurred, in case where the printhead is mounted to the carriage, or after and before a cleaning operation.

Methods and apparatus for assessing power usage of at least one printer component in a printer are described. For example, based on a print instruction (the print instruction being to cause the printer to carry out a printing task), power usage requirements of the at least one printer component in carrying out the print instruction may be determined. The power usage may be determined for each of a plurality of time intervals. In some examples, the effect of the printer component(s) in carrying out the print instruction on at least one power quality measure associated with a power supply network which may be connected to the printer may be considered.

Methods and apparatus for assessing power usage of at least one printer component in a printer are described. For example, based on a print instruction (the print instruction being to cause the printer to carry out a printing task), power usage requirements of the at least one printer component in carrying out the print instruction may be determined. The power usage may be determined for each of a plurality of time intervals. In some examples, the effect of the printer component(s) in carrying out the print instruction on at least one power quality measure associated with a power supply network which may be connected to the printer may be considered.

A printer includes a battery, and a conveying unit powered by the battery and configured to convey printing media at a first speed and a second speed lower than the first speed, a printing unit that prints on the printing media conveyed by the conveying unit, a measuring device that measures a residual capacity of the battery, a display for displaying information related to the residual capacity of the battery, and a processor configured to control the display to, when the residual capacity of the battery is not less than a predetermined residual capacity value, display first information indicating a total number of the printing media that can be printed at the first speed, and when the residual capacity of the battery is less than the predetermined residual capacity value, display second information indicating a total number of the printing media that can be printed at the second speed.

A printer includes a battery, and a conveying unit powered by the battery and configured to convey printing media at a first speed and a second speed lower than the first speed, a printing unit that prints on the printing media conveyed by the conveying unit, a measuring device that measures a residual capacity of the battery, a display for displaying information related to the residual capacity of the battery, and a processor configured to control the display to, when the residual capacity of the battery is not less than a predetermined residual capacity value, display first information indicating a total number of the printing media that can be printed at the first speed, and when the residual capacity of the battery is less than the predetermined residual capacity value, display second information indicating a total number of the printing media that can be printed at the second speed.

A printing apparatus includes a printing part, an accommodating portion, a cover, a shaft portion, and an engaging portion. The cover is movable between a first position to close the accommodating portion and a second position to open the accommodating portion. The shaft portion extends in a first direction. The holding portion includes a first rotating member connected to the shaft portion and configured to rotate between a third position and a fourth position about the shaft portion. The first rotating member has a first part including a restricting portion configured to restrict the rotation of the first rotating member. The first rotating member has a second part having a thickness in the first direction greater than that of the first part.

A printing apparatus includes a printing part, an accommodating portion, a cover, a shaft portion, and an engaging portion. The cover is movable between a first position to close the accommodating portion and a second position to open the accommodating portion. The shaft portion extends in a first direction. The holding portion includes a first rotating member connected to the shaft portion and configured to rotate between a third position and a fourth position about the shaft portion. The first rotating member has a first part including a restricting portion configured to restrict the rotation of the first rotating member. The first rotating member has a second part having a thickness in the first direction greater than that of the first part.