A terminal device may obtain specific information stored in a memory. The specific information may include at least one of region information indicating a region where the terminal device is used and model information of a printing device used by the terminal device. The printing device may be configured to execute printing by using a plurality of cartridges corresponding to a plurality of colors. The terminal device may determine whether a predetermined condition is satisfied or not by using the specific information, and in a case where it is determined that the condition is satisfied, send a first page request and color information to a server. The color information may indicate a selected color selected from the plurality of colors.

A printing system includes a printing device, a color management server, and a client device. An estimated ink use is determined for a print job within printing system. After printing operations, a baseline average ink use is determined for a set of printed pages of the print job. If the baseline average ink use varies from the estimated ink use, then a corrective action is taken to adjust ink use to be closer to the estimated ink use. The corrective action is a global corrective action for the entire document of the print job or a targeted action that adjusts only specified features or pages of the document.

A printer may include a memory configured to store remaining amount-related information related to a remaining amount of color material in a single-purpose color material cartridge mounted on the printer. The printer may send first printer information to a server in a case where the single-purpose color material cartridge is mounted on the printer, and send second printer information to the server in a case where the general-purpose color material cartridge is mounted on the printer. The server may determine whether, regardless of which of the first printer information and the second printer information has been received from the printer, the remaining amount-related information included in the received first printer information or the received second printer information satisfies a predetermined condition, and execute a shipping process for shipping a new single-purpose color material cartridge in a case where the predetermined condition is satisfied.

A system for accurately managing the consumables of a network of printers. The system monitors the printers in the network, collects data relating to operation of the printers, determines the current state of the printers regarding at least one consumable, and uses the data and the current state of the printers to predict when at least one consumable of at least one printer of the network will need to be replaced.

A hybrid ink limit is applied during the creation of an ICC profile. The hybrid ink limit takes into account a percentage total area coverage (TAC) ink limit and a volume-based ink limit. The percentage TAC ink limit is specified using an input from an operator. The volume-based ink limit is retrieved based upon the media for the ICC profile. Both ink limits are applied to primary color combinations for color patches to be printed in a test chart used to capture measurement data to create the ICC profile. A combination of primary colors at exceeds either ink limit is adjusted to meet the ink limit. The adjusted combination is used in the test chart to generate the measurement data for the ICC profile. After creation of the ICC profile, the volume-based ink limit is applied to the ICC profile color combinations to identify those combinations still over the ink limit.

In an example, a method includes, by logic circuitry associated with a replaceable print apparatus component installed in a print apparatus, responding to a sensor data request received from the print apparatus by returning a first response; receiving a calibration parameter from the print apparatus; and returning a second response which is different from the first response.

An image forming apparatus on which a replaceable container storing a recording material is mounted includes an image forming unit configured to form an image using the recording material, a determination unit configured to determine whether the container satisfies a predetermined condition, an acquisition unit configured to acquire an amount of the recording material used for image formation in a predetermined period and stored in the container determined as a container that satisfies the predetermined condition, a memory configured to accumulate information indicating the amount of the recording material acquired by the acquisition unit, and a prediction unit configured to predict a number of days about replacement of the container, based on the information indicating the amount of the recording material and accumulated in the memory.

A logic circuitry package for a replaceable print apparatus component includes an interface including a power terminal and at least one logic circuit. The at least one logic circuit is configured to respond to communications sent to a first address via the interface and respond to communications sent to a second address via the interface. The at least one logic circuit is configured to in response to a first command sent to the first address, draw a first current on the power terminal; and in response to a hibernate command sent to the first address, respond to communications sent to the second address and draw a second current on the power terminal less than the first current.

An example operation method of an image forming apparatus includes obtaining, through a sensor in the image forming apparatus, toner data corresponding to an amount of toner remaining in a developing apparatus, obtaining, based on the toner data in every predetermined period, a linear prediction model predicting the amount of toner remaining in the developing apparatus according to a time at which the toner is supplied to the developing apparatus, predicting, based on the linear prediction model, an expected supply time required for the amount of toner remaining in the developing apparatus to reach a target level, and controlling an operation of supplying the toner to the developing apparatus according to a result of comparing the expected supply time with a predetermined reference supply time.

An image forming apparatus includes a main body, a development cartridge, a toner cartridge, and a controller. The development cartridge includes a development roller, a development chamber, and a development memory. The toner cartridge includes a case in which toner is stored, a toner supply unit configured to supply toner from the case into the development chamber, and a toner memory. The controller stores, in the development memory, information regarding a cumulative received toner amount and a cumulative toner consumption amount. The controller subtracts the cumulative toner consumption amount from the cumulative received toner amount to find a difference, and causes the toner supply unit to supply a first predetermined amount of toner into the development chamber when the difference is equal to or smaller than a first threshold value. The controller stores, in the toner memory, information regarding the cumulative supplied toner amount.