Abstract: A liquid ejection apparatus is equipped with a liquid ejection head configured to eject a supplied liquid, a storage unit configured to store the liquid to be supplied to the liquid ejection head, a pivot member configured to be dipped in the stored liquid in the storage unit and be revolvable according to the amount of the liquid, and a detection unit configured to detect the amount of the liquid by use of the pivot member, wherein the arrangement position of the detection unit differs according to the specific gravity of the liquid stored in the storage unit.

Abstract: The present invention relates to a detection method for detecting the presence or absence of a test substance in a sample, the detection method including a measurement step of measuring a delayed luminescence A of a measurement object obtained by bringing dried algae into contact with the sample.

Abstract: An object is to provide a cartridge that can further improve the printing speed. A cartridge that ejects a liquid while moving in a scanning direction includes: a storage unit that can store the liquid; an element substrate including an ejection port to eject the liquid stored in the storage unit and an element that generates energy used to eject the liquid; and an electric wiring member electrically connected with the element substrate. The center of the element substrate in the scanning direction is offset from the center of the electric wiring member in the scanning direction.

Abstract: The present invention provides a device (1) for detecting contamination with a photosynthesis inhibitor, the device including a collection device (10) configured to collect a test liquid, a light-blocking pretreatment tank (21) configured to store the test liquid (2) collected by the collection device in a state of containing phytoplankton, a stirring device configured to maintain a floating state of the phytoplankton in the test liquid stored in the pretreatment tank, an irradiation light source configured to irradiate the phytoplankton in the test liquid stored in the pretreatment tank with weak light having an underwater photon flux density that does not cause photoinhibition, a drainage conduit (40) configured to allow the test liquid discharged from the pretreatment tank to flow thereinto, and a fluorescence quantum efficiency measuring machine (50) provided for the drainage conduit and configured to measure a fluorescence quantum efficiency of the phytoplankton in the test liquid discharged from the pre

Abstract: An object is to provide a technique that enables avoiding of erroneous attachment of multiple cartridges. A cartridge is attachable to a first attachment portion included in a printing apparatus. The cartridge includes a storage portion capable of storing a liquid. The cartridge includes a protruding portion configured to come into contact with another cartridge attempted to be inserted into the first attachment portion in a state where the cartridge is inserted in a second attachment portion adjacent to the first attachment portion.

Abstract: There is provided a technique that enables correct detection of the remaining amount of liquid such as ink. A liquid ejection apparatus has a liquid ejection head which ejects a supplied liquid, a storage unit which stores a liquid to be supplied to the liquid ejection head, a pivot member which is immersed in a liquid stored in the storage unit and is pivotally movable according to an amount of the liquid, and a detection unit which detects the amount of the liquid using the pivot member, wherein a pivot position of the pivot member differs according to a specific gravity of a liquid stored in the storage unit.

Abstract: There is provided a technique that enables correct detection of the remaining amount of liquid such as ink. A liquid ejection apparatus has a liquid ejection head which ejects a supplied liquid, a storage unit which stores a liquid to be supplied to the liquid ejection head, a pivot member which is immersed in a liquid stored in the storage unit and is pivotally movable according to an amount of the liquid, and a detection unit which detects the amount of the liquid using the pivot member, wherein at least one of a specific gravity and size of the pivot member differs according to a specific gravity of a liquid stored in the storage unit.

Abstract: A liquid supply apparatus includes a liquid storage tank in communication with a liquid ejecting head that ejects liquid and a cartridge configured to be detachably provided to the liquid storage tank. The liquid storage tank includes an atmosphere communication portion in communication with the atmosphere and a first connecting portion that, in a state where the cartridge is attached to the liquid storage tank, enables the cartridge to be in liquid communication with the liquid storage tank. The liquid storage tank also includes a second connecting portion that, in the state where the cartridge is attached to the liquid storage tank, is connected to the cartridge so as to be liquid-tight with the cartridge and enables the cartridge to be in gaseous communication with the atmosphere communication portion.

Abstract: An object is to provide a liquid ejection head capable of efficiently dissipating heat generated at the time of liquid ejection. The liquid ejection head includes a storage portion storing liquid; an ejection portion provided with a nozzle to eject liquid and an element to generate energy to eject liquid from the nozzle; and a flow path portion having a flow path capable of supplying liquid from the storage portion to the ejection portion. In a second direction orthogonal to a first direction which is a direction of supply of liquid from the storage portion to the ejection portion, the flow path portion includes a narrow width portion smaller in width than the storage portion and the ejection portion.

Abstract: Provided is a storage container for a liquid cartridge, including: a main body having a storage portion in which to store the liquid cartridge, and an opening portion through which to put the liquid cartridge in and out; and at least one first rib being flexible and arranged in a gap space formed between the storage portion and the liquid cartridge in a state where the liquid cartridge is stored in the storage portion, the at least one first rib being arranged in the gap space so as to protrude in a direction along an inner surface of the storage portion and in an inward direction from the inner surface of the storage portion and extend from around a bottom of the storage portion facing the opening portion toward the opening portion.

Abstract: A liquid ejection apparatus is equipped with a liquid ejection head configured to eject a supplied liquid, a storage unit configured to store the liquid to be supplied to the liquid ejection head, a pivot member configured to be dipped in the stored liquid in the storage unit and be revolvable according to the amount of the liquid, and a detection unit configured to detect the amount of the liquid by use of the pivot member, wherein the arrangement position of the detection unit differs according to the specific gravity of the liquid stored in the storage unit.

Abstract: A technique with which deterioration in a function of detecting the remaining amount of liquid can be prevented even in a case where the liquid is thickened or solidified is to be provided. A liquid ejection apparatus is provided with a liquid ejection head configured to eject supplied liquid, a storage unit configured to store the liquid to be supplied to the liquid ejection head, a pivot member configured to be immersed in the liquid stored in the storage unit and be revolvable according to the amount of the liquid, and a detection unit configured to detect the amount of the liquid by use of the pivot member, and the liquid ejection apparatus includes a pivot unit configured to force the pivot member to pivotally move.

Abstract: There is provided a technique that enables correct detection of the remaining amount of liquid such as ink. A liquid ejection apparatus has a liquid ejection head which ejects a supplied liquid, a storage unit which stores a liquid to be supplied to the liquid ejection head, a pivot member which is immersed in a liquid stored in the storage unit and is pivotally movable according to an amount of the liquid, and a detection unit which detects the amount of the liquid using the pivot member, wherein at least one of a specific gravity and size of the pivot member differs according to a specific gravity of a liquid stored in the storage unit.

Abstract: There is provided a technique that enables correct detection of the remaining amount of liquid such as ink. A liquid ejection apparatus has a liquid ejection head which ejects a supplied liquid, a storage unit which stores a liquid to be supplied to the liquid ejection head, a pivot member which is immersed in a liquid stored in the storage unit and is pivotally movable according to an amount of the liquid, and a detection unit which detects the amount of the liquid using the pivot member, wherein a pivot position of the pivot member differs according to a specific gravity of a liquid stored in the storage unit.

Abstract: A liquid supply apparatus includes a liquid storage tank in communication with a liquid ejecting head that ejects liquid and a cartridge configured to be detachably provided to the liquid storage tank. The liquid storage tank includes an atmosphere communication portion in communication with the atmosphere and a first connecting portion that, in a state where the cartridge is attached to the liquid storage tank, enables the cartridge to be in liquid communication with the liquid storage tank. The liquid storage tank also includes a second connecting portion that, in the state where the cartridge is attached to the liquid storage tank, is connected to the cartridge so as to be liquid-tight with the cartridge and enables the cartridge to be in gaseous communication with the atmosphere communication portion.

Abstract: A liquid supply apparatus includes a liquid storage tank in communication with a liquid ejecting head that ejects liquid and a cartridge configured to be detachably provided to the liquid storage tank. The liquid storage tank includes an atmosphere communication portion in communication with the atmosphere and a first connecting portion that, in a state where the cartridge is attached to the liquid storage tank, enables the cartridge to be in liquid communication with the liquid storage tank. The liquid storage tank also includes a second connecting portion that, in the state where the cartridge is attached to the liquid storage tank, is connected to the cartridge so as to be liquid-tight with the cartridge and enables the cartridge to be in gaseous communication with the atmosphere communication portion.

Abstract: A liquid storage bottle includes a bottle body having a resin-made first cylindrical part at one end, the first cylindrical part having an opening at its front end, and a tubular nozzle for pouring out the liquid contained in the inside of the bottle body by way of the opening, the tubular nozzle having a resin-made second cylindrical part bonded to the bottle body. The inner peripheral surface of the second cylindrical part is welded to the outer peripheral surface of the first cylindrical part. The outer peripheral surface of the first cylindrical part is provided with an annular groove extending in the circumferential direction and the annular groove is made to contain a part of the resin that is molten during the bonding operation.

Abstract: The present invention provides a device (1) for detecting contamination with a photosynthesis inhibitor, the device including a collection device (10) configured to collect a test liquid, a light-blocking pretreatment tank (21) configured to store the test liquid (2) collected by the collection device in a state of containing phytoplankton, a stirring device configured to maintain a floating state of the phytoplankton in the test liquid stored in the pretreatment tank, an irradiation light source configured to irradiate the phytoplankton in the test liquid stored in the pretreatment tank with weak light having an underwater photon flux density that does not cause photoinhibition, a drainage conduit (40) configured to allow the test liquid discharged from the pretreatment tank to flow thereinto, and a fluorescence quantum efficiency measuring machine (50) provided for the drainage conduit and configured to measure a fluorescence quantum efficiency of the phytoplankton in the test liquid discharged from the pre

Abstract: A liquid storage bottle includes a bottle main body having a first cylindrical portion formed of a resin and a nozzle and has a second cylindrical portion formed of a resin and welded to the first cylindrical portion on an outer peripheral side of the first cylindrical portion. The first cylindrical portion includes an outer peripheral surface and a first annular surface extending radially outward from an axial end portion of the outer peripheral surface, the second cylindrical portion includes an inner peripheral surface facing the outer peripheral surface of the first cylindrical portion and a second annular surface which extends radially outward from an axial end portion of the inner peripheral surface and faces the first annular surface of the first cylindrical portion, and a peripheral wall portion extending in an axial direction is formed radially outside the second annular surfaces.