A printing apparatus includes at least a tank configured to hold a first printing material at a first position and a tank configured to hold a second printing material at a second position different from the first position. A light emitting control unit controls light emitting states of a plurality of light emitters. If an amount of the printing material in the first tank is less than a predetermined amount, and an amount of the printing material in the second tank is greater than a predetermined amount, the light emitting control unit transits a state of a first light emitter from a state indicating that the amount of the printing material is greater than the predetermined amount to a state indicating that the amount of the printing material is less than the predetermined amount, and maintains a state of a second light emitter.

An inkjet recording apparatus includes an ink tank, a recording head, an ink sensor, a monitor, an operation panel, and a controller configured to control operation thereof. The controller receives a completion signal indicating completion of ink injection, and receives a first signal or a second signal from the ink sensor based on whether a predetermined amount of ink is sensed in the ink chamber. Based on the completion signal and receipt of the first signal, inquiry information is displayed on the monitor regarding whether ink injection into the ink chamber is completed. Based on the completion signal and receipt of the second signal, a notification is displayed on the monitor that is based on the ink sensor not sensing the predetermined amount of ink.

An Imaging device includes a print monitoring engine to monitor an ink level of an ink cartridge installed in the imaging device and track a print count for each ink level. The print count for each ink level indicates a number of prints printed during a one percent drop in the ink level. Further, a print capacity estimation engine is to determine an average print rate for the ink cartridge based on the print count for each one percent drop in ink level and determine a print capacity estimate of the ink cartridge based at least on the average print rate and the current ink level. Further, an Ink cartridge controlling engine is to deactivate the ink cartridge upon occurrence of a predetermined event and activate the deactivated ink cartridge in response to an activation input from a user, wherein the activation input is based on the print capacity estimate.

In an image-recording device, a mount body detachably holds a cartridge. The cartridge has a first chamber configured to store consumable therein. A tank is in communication with the cartridge, and the tank has a second chamber. Consumable in the first chamber is capable of moving into the second chamber. A controller determines whether a residual quantity of consumable stored in the first chamber of the cartridge held by the mount body is lower than or equal to a prescribed threshold. The controller expands, when a specific condition is satisfied, a maximum quantity of consumable up to which consumable is capable of being stored in the second chamber. The specific condition includes a first condition that the residual quantity of consumable stored in the first chamber is higher than the prescribed threshold, and a second condition that information notifying that the cartridge is to be replaced is received.

There is provided a printing apparatus. A cap caps an ink ejection surface of a printhead. An ink suction path is connected to the cap and sucks the ink in the cap. An ink tank stores the ink to be supplied to the printhead. An ink supply path connects the printhead to the ink tank. A first closing unit closes the ink suction path. A second closing unit closes the ink supply path. A control unit is able to execute a first control mode in which the first closing unit closes the ink suction path and a second control mode in which the second closing unit closes the ink supply path.

An apparatus may include an electrical interface to access a memory. Based on data receivable from the memory, an actuator may allow fluid flow from a print fluid supply external to the apparatus to a print fluid reservoir of the apparatus.

An image forming system includes a recording processing portion, an acquirement processing portion, and an output processing portion. The recording processing portion records a consumed amount of a consumable consumed by an image forming apparatus per predetermined unit time. The acquirement processing portion acquires prediction data that indicates a predicted consumed amount of the consumable per the unit time for a time period from a predetermined standard time, based on a comparison result between: a first record result corresponding to a first time period extending to a reference time; and a second record result corresponding to a predetermined second time period extending to the standard time, among a record result recorded by the recording processing portion, the reference time being a predetermined specific time period earlier than the standard time. The output processing portion outputs the prediction data acquired by the acquirement processing portion.

A printing apparatus counts an ink quantity in an ink tank in accordance with consumption of ink from the ink tank, updates and holds a count value obtained by the count in a counter, and detects whether ink injection to the ink tank has been done before execution of sensing by a sensing unit configured to sense whether a predetermined quantity of ink is present in the ink tank. If sensing by the sensing unit is executed, the apparatus reads out a preceding sensing result from a memory that stores a sensing result of presence/absence of the ink by the sensing unit, verifies a transition between the preceding sensing result and a current sensing result, and controls operations of reset of the count value held by the counter and the count based on the transition and a result of the detection.

A logic circuitry package for a replaceable print apparatus component comprises an interface to communicate with a print apparatus logic circuit, and at least one logic circuit. The logic circuit may be configured to identify, from a command stream received from the print apparatus, parameters including a class parameter, and/or identify, from the command stream, a read request, and output, via the interface, a count value in response to a read request, the count value based on identified received parameters.

A monitoring device is configured to monitor image recordation by a recorder using a recording material supplied from a first cartridge and a second cartridge. the monitoring device includes a memory and a controller. The controller is configured to obtain number-of-sheet information indicating a number of sheets on which the image recordation has been performed, first consumption amount information indicating a consumption amount of a recording material consumed from the first cartridge, and second consumption amount information indicating a consumption amount of a recording material consumed from the second cartridge, determine ratio information indicating a ratio of the recording material consumed from the second cartridge to a total consumption amount of the recording material consumed from the first and second cartridges based on the obtained first and second consumption amount information, and store the obtained number-of-sheet information and the determined ratio information in the memory.