Abstract: In an image forming apparatus, a scanning optical system forms on a photosensitive member N beam spots. Each beam spot scans along a scan line on the photosensitive member for one cycle. A center-to-center distance of any neighboring two beam spots is separated by M scan lines. M is a natural number larger than or equal to two. For each cycle, the memory controller reads adjacent sets of line data for N scan lines from the page memory, writes the adjacent sets of line data for N scan lines to the storage areas identified by a plurality of successive addresses of the line memory, selects addresses identifying storage areas storing unadjacent sets of line data having non-successive two scan lines separated by M scan lines; and outputs the unadjacent sets of line data stored in the storage areas identified by the selected addresses to the N laser emitting members.

Abstract: There is provided a printing apparatus including: a nozzle configured to discharge a liquid by an energy generating element; a selector configured to select, based on a print job, a driving waveform corresponding to a printing method indicated by the print job, from a plurality of driving waveforms different from each other; a signal generator configured to generate a time division multiplex signal, based on data indicating the driving waveform selected by the selector; and a separator configured to separate a driving waveform signal indicating the driving waveform selected by the selector from the time division multiplex signal generated by the signal generator. The energy generating element is configured to be driven by the driving waveform signal separated by the separator.

Abstract: In an image forming apparatus, a scanning optical system forms on a photosensitive member N beam spots. Each beam spot scans along a scan line on the photosensitive member for one cycle. A center-to-center distance of any neighboring two beam spots is separated by M scan lines. M is a natural number larger than or equal to two. For each cycle, the memory controller reads adjacent sets of line data for N scan lines from the page memory, writes the adjacent sets of line data for N scan lines to the storage areas identified by a plurality of successive addresses of the line memory, selects addresses identifying storage areas storing unadjacent sets of line data having non-successive two scan lines separated by M scan lines; and outputs the unadjacent sets of line data stored in the storage areas identified by the selected addresses to the N laser emitting members.

Abstract: The printing device includes a printing unit, an interface, and a controller. In a case that a print job is received while electric power is being supplied to an external device from the interface, the controller determines whether a first condition or a second condition is met. The print job is for commanding the printing unit to execute printing. The second condition is different from the first condition. The controller executes printing based on the print job while limiting a level of the electric power being supplied to the external device from the interface in a case that the controller determines that the first condition is met. The controller holds the print job without limiting a level of the electric power supplied to the external device from the interface in a case that the controller determines that the second condition is met.

Abstract: There is provided a head system includes: a main controller; a plurality of head units; and sub-controllers respectively connected to at least one of the plurality of head units. The sub-controllers are each serially connected via a wiring. The wiring includes: a first communication path for transmitting an image signal; and a second communication path that transmits a discharge timepoint signal indicating a discharge timepoint. Each of the sub-controllers is configured to cause liquid corresponding to an image indicated by the image signal that has been received through the first communication path to be discharged from nozzles of one of the head units to which each of the sub-controllers have been connected, at a discharge timepoint indicated by the discharge timepoint signal that has been received through the second communication path.

Abstract: An information processing apparatus includes a power processor, an interface, a first detector that detects at least one of a voltage value and a current value on an electric power line which connects the power processor and the interface, a second detector that detects at least one of a voltage value and a current value on the electric power line, a switch that switches a supply of electric power supplied from the interface to an outside, and a controller. The controller controls the switch to restrict the electric power supplied from the interface to an outside in a case where at least one of a detection value of the first detector and a detection value of the second detector is equal to or greater than a threshold value.

Abstract: An image forming apparatus, including: an image forming engine; an interface; and a controller; wherein the controller is configured to: supply electric power to an external device via the interface; determine whether to execute, during executing the supplying the electric power to the external device via the interface, a first operation relating to image formation by the image forming engine; limit a power amount to be supplied to the external device when the controller determines to execute the first operation based on a result of the determining whether to execute the first operation; execute the first operation in a state in which the power amount to be supplied to the external device is limited; and determine, after the controller has started the executing the first operation, whether to execute a second operation different from the first operation.

Abstract: The printing device includes a printing unit, an interface, and a controller. In a case that a print job is received while electric power is being supplied to an external device from the interface, the controller determines whether a first condition or a second condition is met. The print job is for commanding the printing unit to execute printing. The second condition is different from the first condition. The controller executes printing based on the print job while limiting a level of the electric power being supplied to the external device from the interface in a case that the controller determines that the first condition is met. The controller holds the print job without limiting a level of the electric power supplied to the external device from the interface in a case that the controller determines that the second condition is met.

Abstract: An information processing apparatus includes: an interface; a battery; and a controller. The controller is configured to: determine whether a reduction notification indicating reduction in the electric power is received from an external device when the interface is receiving the electric power of a first power amount from the external device; and request the external device via the interface to supply the electric power of a second power amount that is less than the first power amount and greater than or equal to an amount of the electric power consumed in self-discharge of the battery.

Abstract: A first interface performs power delivery and communication with a first external apparatus. A second interface performs power delivery and communication with a second external apparatus. A controller is configured to perform: storing, in a memory, history information relating to power delivery performed with the second external apparatus through the second interface, the history information including identification information of the second external apparatus and an amount of power delivery with the second external apparatus; determining whether to perform a power role switch with the first external apparatus, the power role switch being a switch of a power role between a power source of supplying power and a power sink of receiving power; and in response to determining that the power role switch is to be performed, performing power delivery with the second external apparatus through the second interface based on the history information stored in the memory.

Abstract: An image forming apparatus, including: an image forming engine; an interface; and a controller; wherein the controller is configured to: supply electric power to an external device via the interface; determine whether to execute, during executing the supplying the electric power to the external device via the interface, a first operation relating to image formation by the image forming engine; limit a power amount to be supplied to the external device when the controller determines to execute the first operation based on a result of the determining whether to execute the first operation; execute the first operation in a state in which the power amount to be supplied to the external device is limited; and determine, after the controller has started the executing the first operation, whether to execute a second operation different from the first operation.

Abstract: A CPU of an MFP receives battery information from a first external device via a first interface, determines whether a total amount of electric power supplied to a plurality of interfaces from a power supply is maintained, and reduces an amount of the electric power supplied to the first external device via the first interface in a case where determining that the first external device has no battery based on the battery information in response to determining that the total amount of the electric power supplied to the plurality of the interfaces from the power supply is not maintained.

Abstract: A computing device, such as a multifunction printer, may be configured to supply electrical power to one or more external devices. The computing device may include a user interface that can display information to a user, informing the user of the electrical power being supplied to the one or more external devices and/or of the total amount of electrical power that is available to the one or more external devices. The user may use the user interface to adjust the amount of power being supplied to each of the external devices, and the computing device may store information indicating the user's adjusted power levels and use the stored information to control the amount of power supplied to the external devices.

Abstract: An information processing apparatus includes a power processor, an interface, a first detector that detects at least one of a voltage value and a current value on an electric power line which connects the power processor and the interface, a second detector that detects at least one of a voltage value and a current value on the electric power line, a switch that switches a supply of electric power supplied from the interface to an outside, and a controller. The controller controls the switch to restrict the electric power supplied from the interface to an outside in a case where at least one of a detection value of the first detector and a detection value of the second detector is equal to or greater than a threshold value.

Abstract: An information processing apparatus includes: an interface; and a controller. The controller executes: storing, into a memory, history information relating to supply of electric power to an external device via the interface; rebooting when the reboot is required during supply of the electric power to the external device via the interface; and restarting control of the supply of the electric power to the external device via the interface, based on the history information stored in the memory.

Abstract: An information processing apparatus includes an interface and a controller. The interface performs power delivery and communication with an external apparatus. The controller performs: storing, in a memory, history information relating to power delivery performed with the external apparatus through the interface, the history information including identification information of the external apparatus and a power role of at least one of the information processing apparatus and the external apparatus, the identification information and the power role being stored in association with each other, the power role being one of a power source of supplying power and a power sink of receiving power; and in response to detecting connection of the external apparatus through the interface, determining the power role of the information processing apparatus based on the identification information of the external apparatus connected through the interface and on the history information stored in the memory.

Abstract: A CPU of an MFP receives battery information from a first external device via a first interface, determines whether a total amount of electric power supplied to a plurality of interfaces from a power supply is maintained, and reduces an amount of the electric power supplied to the first external device via the first interface in a case where determining that the first external device has no battery based on the battery information in response to determining that the total amount of the electric power supplied to the plurality of the interfaces from the power supply is not maintained.

Abstract: A CPU of an MFP receives battery information from a first external device via a first interface, determines whether a total amount of electric power supplied to a plurality of interfaces from a power supply is maintained, and reduces an amount of the electric power supplied to the first external device via the first interface in a case where determining that the first external device has no battery based on the battery information in response to determining that the total amount of the electric power supplied to the plurality of the interfaces from the power supply is not maintained.

Abstract: An information processing apparatus includes an interface and a controller. The interface performs power delivery and communication with an external apparatus. The controller performs: storing, in a memory, history information relating to power delivery performed with the external apparatus through the interface, the history information including identification information of the external apparatus and a power role of at least one of the information processing apparatus and the external apparatus, the identification information and the power role being stored in association with each other, the power role being one of a power source of supplying power and a power sink of receiving power; and in response to detecting connection of the external apparatus through the interface, determining the power role of the information processing apparatus based on the identification information of the external apparatus connected through the interface and on the history information stored in the memory.

Abstract: A first interface performs power delivery and communication with a first external apparatus. A second interface performs power delivery and communication with a second external apparatus. A controller is configured to perform: storing, in a memory, history information relating to power delivery performed with the second external apparatus through the second interface, the history information including identification information of the second external apparatus and an amount of power delivery with the second external apparatus; determining whether to perform a power role switch with the first external apparatus, the power role switch being a switch of a power role between a power source of supplying power and a power sink of receiving power; and in response to determining that the power role switch is to be performed, performing power delivery with the second external apparatus through the second interface based on the history information stored in the memory.