According to an aspect of the present invention, an inkjet printing apparatus includes a print head having an ejection opening surface on which ejection openings for ejecting ink are formed, a tank storing ink to be supplied to the print head, a supply flow path for supplying the ink from the tank to the print head, a collection flow path for collecting the ink from the print head to the tank, a supply pump provided in the supply flow path to supply the ink from the tank to the print head, a tank decompression pump which decompresses the inside of the tank, and a control unit which controls to drive the supply pump and the tank decompression pump to fill the collection flow path with ink.

A method and an arrangement for calibrating a delivery rate of an ink pump of a printing device with the aid of an ink container including a sensor unit for detecting at least a first fill level value. Based on the initial fill level of the ink container below the first fill level value, the ink pump conveys ink from an ink reservoir into the ink container up to a final fill level above the first fill level value, so that at least a predetermined volume between the initial fill level and the first fill level value is filled. Upon conveying the ink into the ink container, an ink pump parameter is determined as of reaching the initial fill level and until the first fill level value is reached. A delivery rate of the ink pump is determined based on the predetermined volume and the ink pump parameter.

A printing device includes a main control board, a resin vat, a vibration generating assembly, a detection assembly and a support plate. The vibration generating assembly includes a drive component and a paddle. A drive end of the drive component is connected to the paddle, and the drive end is configured to drive the paddle to vibrate. The detection assembly includes an elastic sheet, a resistance strain gage and a detection circuit. The resistance strain gage is attached to the elastic sheet, a first end of the elastic sheet is arranged on the first face of the support plate, and a second end of the elastic sheet extends into the liquid to be detected. The detection circuit is configured to determine an output voltage according to a resistance value of the resistance strain gage. Automatic detection of the liquid level depth of the liquid to be detected is achieving.

A storage device includes a storage section including a plurality of walls and storing an object in a space surrounded by the plurality of walls, a first electrode provided in a first portion of a first wall among the plurality of walls, and a second electrode provided in a second wall among the plurality of walls. The first portion is thinner than a second portion which is at least a part of the plurality of walls other than the first portion.

A storage device includes a storage section including a plurality of walls and storing an object in a space surrounded by the plurality of walls, a first electrode provided in a first portion of a first wall among the plurality of walls, a second electrode provided in a second wall among the plurality of walls, and a first support portion supporting the first portion and a second portion among the plurality of walls. The first portion is thinner than the second portion.

A storage device includes a storage section including a plurality of walls and storing an object in a space surrounded by the plurality of walls; and a flexible printed substrate fixed to the storage section, in which the storage section includes a first positioning portion, and the flexible printed substrate includes a first electrode provided in a first wall among the plurality of walls, a second electrode provided in a second wall among the plurality of walls, a first wiring coupled to the first electrode, a second wiring coupled to the second electrode, and a second positioning portion that is coupled to the first positioning portion to determine a position of the flexible printed substrate.

A storage device includes a storage section including a plurality of walls and storing an object in a space surrounded by the plurality of walls; a flexible printed substrate including a first electrode provided in a first wall among the plurality of walls, and a second electrode provided in a second wall among the plurality of walls; and a double-sided tape including a base material, a first adhesive layer formed on a first surface of the base material, and a second adhesive layer formed on a second surface of the base material opposite to the first surface, and adhering the flexible printed substrate to the storage section.

A storage device includes a storage section including a plurality of walls and storing an object in a space surrounded by the plurality of walls; and a flexible printed substrate including a first electrode provided in a first wall among the plurality of walls, a second electrode provided in a second wall among the plurality of walls, a first wiring coupled to the first electrode, and a second wiring coupled to the second electrode, in which a width of the first wiring in a first direction, which is a direction in which the object decreases in the storage section, is smaller than a width of the first electrode in the first direction, and a width of the second wiring in the first direction is smaller than a width of the second electrode in the first direction.

A storage device includes a storage section including a plurality of walls and storing an object in a space surrounded by the walls; and a flexible printed substrate fixed to the storage section, in which the flexible printed substrate includes a first electrode, a second electrode, a third electrode, a first terminal that is electrically coupled to the first electrode, a second terminal that is electrically coupled to the second electrode, a third terminal that is electrically coupled to the third electrode, and a plurality of constant voltage terminals held at a constant voltage, one or more constant voltage terminals are arranged between the first terminal and the second terminal, one or more constant voltage terminals are arranged between the second terminal and the third terminal, and one or more constant voltage terminals are arranged between the third terminal and the first terminal.

A storage device includes a storage section including a plurality of walls and storing an object in a space surrounded by the plurality of walls; a first electrode provided in a first portion of a first wall among the plurality of walls; and a second electrode provided in a second portion of a second wall among the plurality of walls, in which the first portion includes a first outer surface on which the first electrode is provided and a first inner surface opposite to the first outer surface, the second portion includes a second outer surface on which the second electrode is provided and a second inner surface opposite to the second outer surface, and the first inner surface of the first portion and the second inner surface of the second portion are subjected to a water-repellent treatment.