Examples disclosed herein relate to displaying, on a user interface, an approximate amount of a supply material in a supply reservoir. Upon receiving, in a receptacle, a new supply container, the supply reservoir may be filled with supply material from the new supply container. The user interface may further display an updated approximate amount of the supply material in a supply reservoir and an approximate amount of the supply material in the supply container.

A printing apparatus includes a circulation pathway that circulates an ink between a pressure chamber of a printing head and the outside thereof. The number of eject of the ink to be ejected from an ejection port of the printing head to a unit printing area is set according to a concentration of the ink in the circulation pathway.

A liquid discharge apparatus is configured to activate a first notification in a case where a liquid level of a tank is less than a threshold. In a case where a cartridge is installed after activating the first notification, a controller determines outflow amount Vcs of the liquid flowing into the tank based on the liquid amount of the installed cartridge, and controls a notification device based on the determined outflow amount Vcs.

A liquid ejecting apparatus includes a liquid ejecting head that ejects a liquid accommodated in a liquid container, a detection unit that detects a remaining amount of the liquid accommodated in the liquid container, and a control unit that operates in a normal mode and a special mode. In the normal mode, the control unit prohibits ejection of the liquid from the liquid ejecting head when the detection unit has detected that the remaining amount of the liquid accommodated in the liquid container has become smaller than a predetermined threshold value. In the second mode, the control unit allows ejection of the liquid from the liquid ejecting head with an instruction from a user as a requirement when the detection unit has detected that the remaining amount of the liquid accommodated in the liquid container has become smaller than the predetermined threshold value.

An apparatus, for discharging a liquid through a head based on a first discharge instruction, is configured to: update a liquid amount V stored in the memory with a value equivalent to the amount of liquid instructed to be discharged by the first discharge instruction; determine whether the updated liquid amount V is equal to or larger a threshold amount; update the liquid amount V stored in a memory to a predetermined value in response to determining that the updated liquid amount V is equal to or larger than the threshold amount and receiving a second signal from the liquid level sensor; and prohibit the liquid from being discharged through the head in response to determining that the updated liquid amount V is less than the threshold amount and receiving the first signal from the liquid level sensor.

An image forming apparatus includes an image forming section, a main replenishing section, an auxiliary replenishing section, and a controller. The image forming section forms an image on a recording medium using a consumable. The main replenishing section retains the consumable therein. The auxiliary replenishing section is replenished with the consumable from the main replenishing section and replenishes the consumable to the image forming section. The controller controls an image forming speed for forming the image on the recording medium. The controller lowers the image forming speed below a normal speed when a main residual amount corresponding to a remaining amount of the consumable retained in the main replenishing section is no greater than a specified value.

The image recording apparatus has a head, a tank, a case that receives a cartridge, and a controller. When the cartridge is installed in the case of the image recording apparatus, the liquid in the cartridge flows to the tank by a difference between a liquid level in the cartridge and a liquid level in the tank. The controller controls a display to display a first notification indicating an ink cartridge based on receiving a first signal output from a sensor when a liquid level in an ink chamber reached a specific position. The controller, after receiving the first signal from the sensor, counts a count value indicating an amount of discharged liquid from the head. Further, the controller, in response to the count value reaching a first threshold, controls the display to display a second notification.

A system is disclosed. The system at least one physical memory device to store ink deposition curve compute logic and one or more processors coupled with the at least one physical memory device, to execute the ink deposition curve compute logic to receive a histogram for each of a plurality of color planes, receive ink measurement data for each of the plurality of color planes, compute ink deposition curve data for each of the plurality of color planes based on the histograms and the ink measurement data and transmit the ink deposition curve data.

A system tracks the fluid information in fluid cartridges used in digital dispense devices connected to a network. Each device stores a history of cartridges that have been used in the device. Each cartridge stores a fluid information value and/or an indicator that indicates whether the cartridge has been used before in any device. When a device receives a previously-used cartridge, the device broadcasts a request for information about that cartridge from the other devices. Each device having the matching cartridge identification value in its history reports over the network the latest fluid information value associated with the matching cartridge identification value. The requesting device chooses the most up-to-date response based on the latest value of fluid information. The requesting device then updates its memory using the latest value and begins incrementing the information from that latest information for subsequent fluid dispense jobs performed using the installed cartridge.

An information processing method for an information processing apparatus including an application configured to extend a function provided by a print data generation software for generating print data to be printed by a plurality of printing devices includes obtaining information about a printing device connected to the information processing apparatus, and causing a display to display, in a case where the obtained information indicates a certain type printing device, information based on a type of the certain type printing device.