The invention relates to a method of cleaning a fluid circuit in an inkjet printer that comprises a print head connected to the fluid circuit through an umbilical (19), and also comprises means (50) of recovering fluid from the print head (1), this method comprising at least sending solvent to said fluid recovery means (50), without making this solvent flow in the umbilical or in the print head.

The invention relates to a method of cleaning a fluid circuit in an inkjet printer that comprises a print head connected to the fluid circuit through an umbilical (19), and also comprises means (50) of recovering fluid from the print head (1), this method comprising at least sending solvent to said fluid recovery means (50), without making this solvent flow in the umbilical or in the print head.

A printer includes a recording unit, a platen unit, a maintenance tank, and a guide unit. The recording unit ejects ink onto a medium. The platen unit includes a support surface that supports the medium and a discard portion in which waste ink is discarded. The maintenance tank recovers the waste ink. The guide unit has a receiving surface, and guides the waste ink to the maintenance tank. Second surface energy is larger than first surface energy when the first surface energy indicates surface energy at a first position on the receiving surface with respect to the waste ink and the second surface energy indicates surface energy at a second position closer to the maintenance tank than the first position.

A printer includes a recording unit, a platen unit, a maintenance tank, and a guide unit. The recording unit ejects ink onto a medium. The platen unit includes a support surface that supports the medium and a discard portion in which waste ink is discarded. The maintenance tank recovers the waste ink. The guide unit has a receiving surface, and guides the waste ink to the maintenance tank. Second surface energy is larger than first surface energy when the first surface energy indicates surface energy at a first position on the receiving surface with respect to the waste ink and the second surface energy indicates surface energy at a second position closer to the maintenance tank than the first position.

A ROM unit mounted to a bottle has a plurality of terminal plates on the front end surface of the ROM unit. The ROM unit is movable in a direction orthogonal to a bottle axis Ax, and can be positioned at a retreat position where an interference with a contamination preventing eaves is avoided, and a contact position projected more front than the retreat position. The terminal plates can be electrically contacted with reservoir terminals when positioning at the contact position.

A blowout port for gas is efficiently configured without impairing mist collection performance. Two blowout ports for gas are adjacent to each other by interposing a partition. An end of the partition is provided at a position near a deep side of the two blowout ports relative to ends of the two blowout ports so as to form a step.

A liquid circulation device comprises a liquid chamber connected with a liquid discharge section that discharges liquid, a circulation section which circulates the liquid in a flow path containing the liquid chamber and the liquid discharge section, a liquid supply section, a pressure adjustment section and a control section that, according to fluctuation velocity of the pressure, replenishes the liquid through the liquid supply section if the detected pressure is equal to or smaller than a predetermined pressure value or lower than the predetermined pressure value and the pressure fluctuation velocity is equal to or greater than a predetermined speed or faster than the predetermined speed and adjusts the pressure of the liquid discharge section through the pressure adjustment section and the pressure fluctuation velocity is slower than the predetermined speed or equal to or smaller than the predetermined speed.

A liquid circulation device comprises a liquid chamber connected with a liquid discharge section that discharges liquid, a circulation section which circulates the liquid in a flow path containing the liquid chamber and the liquid discharge section, a liquid supply section, a pressure adjustment section and a control section that, according to fluctuation velocity of the pressure, replenishes the liquid through the liquid supply section if the detected pressure is equal to or smaller than a predetermined pressure value or lower than the predetermined pressure value and the pressure fluctuation velocity is equal to or greater than a predetermined speed or faster than the predetermined speed and adjusts the pressure of the liquid discharge section through the pressure adjustment section and the pressure fluctuation velocity is slower than the predetermined speed or equal to or smaller than the predetermined speed.

Certain examples relate to controlling recirculation processes in a printing apparatus. One example implementation includes a printing material cartridge comprising a reservoir storing printing material to supply a printing apparatus and a storage medium storing process instructions for controlling the recirculation process in the printing apparatus.

Certain examples relate to controlling recirculation processes in a printing apparatus. One example implementation includes a printing material cartridge comprising a reservoir storing printing material to supply a printing apparatus and a storage medium storing process instructions for controlling the recirculation process in the printing apparatus.