Certain examples described herein relate to liquid waste containers delimiting an opening for receiving liquid. The liquid waste container comprises a receptacle for liquid waste and a bistable arrangement having first and second stable states such that when the bistable arrangement is in the first stable state, liquid can be received into the receptacle through the opening, and when the bistable arrangement is in the second stable state, liquid is prevented from exiting the receptacle through the opening. The example liquid waste container further comprises an actuator arranged to engage the bistable arrangement and to cause the bistable arrangement to transition from the first stable state to the second stable state.

A liquid surface detector includes an electrode pad, a coil, a memory, and a detection control circuit. The electrode pad is attached to an outer side surface of a tank of the image forming apparatus. The coil is connected to the electrode pad. The memory stores initial values. The detection control circuit determines a capacitance (first capacitance) of a first resonance circuit including the coil and the tank with the electrode pad. When determining a liquid surface level value, the detection control circuit subtracts an error value from the first capacitance so as to determine a first corrected capacitance, and determines the liquid surface level value based on the first corrected capacitance and the initial value.

An inkjet printing apparatus includes a print head that ejects ink, a waste ink tank having an absorber that absorbs ink discharged from the print head. The inkjet printing apparatus further includes a counting unit that counts a waste ink amount discharged to the waste ink tank, a timer that measures an elapsed time from installation of the waste ink tank in the apparatus, an acquiring unit that acquires a waste ink retention amount by obtaining an evaporation amount from evaporation of waste ink retained in the waste ink tank based on the elapsed time and subtracting the evaporation amount from the waste ink amount, a notifying unit that notifies that the waste ink retention amount exceeds a threshold; and a setting unit that sets the threshold based on a waste ink evaporation rate calculated by using the evaporation amount and the waste ink amount.

A liquid absorber includes a container and an absorbing unit. The container has an opening and collects a liquid. The absorbing unit is an assembly of porous absorbent blocks, each containing fibers and a polymeric absorbent, and is in the container with spaces between the porous absorbent blocks. Each of the porous absorbent blocks has a first component and a second component. The first component is porous and has a density of 0.05 [g/cm.sup.3] or more and 0.50 [g/cm.sup.3] or less. The second component has a higher polymeric absorbent content than the first component.

A mist collecting unit for collecting a mist of ink droplets. The mist collecting unit includes the following elements. An introduction pipe, a mist introducing box with the introduction pipe mounted to have an upper part open, and a collecting box attached to a lower part of the mist introducing box. The gas is introduced from the introduction pipe into the collecting box, thereby capturing the mist included in the gas by inner surfaces of the collecting box.

A recording apparatus includes an apparatus main body including: a transport unit that transports a medium; a liquid ejecting head that is provided above a transport path for the medium and performs recording by ejecting liquid onto the medium; and an accommodating unit that accommodates a waste liquid container configured to store waste liquid discharged from the liquid ejecting head, wherein a front surface of the apparatus main body is provided with a front wall and an operable operation unit, which are adjacent to each other in a width direction, and the accommodating unit is located between the front wall and the liquid ejecting head in a depth direction at a position that does not overlap the operation unit in the width direction.

A liquid ejection device includes: a casing; a holder for rotatably supporting a sheet roll including a continuous sheet; a power transmission mechanism positioned beside the holder for transmitting a rotational driving force thereto; a cartridge attachment portion for receiving a cartridge; a conveying mechanism for conveying the continuous sheet to a discharge opening on a front surface of the casing; a head; and a maintenance unit. The holder supporting the sheet roll is rotatable about a rotation axis extending in a leftward/rightward direction. The cartridge and the holder are detachably attachable to the casing through an opening thereof. The cartridge attachment portion and the power transmission mechanism are positioned at the same side of the holder in the leftward/rightward direction. An occupying range of the maintenance unit is across respective occupying ranges of the cartridge attachment portion and the power transmission mechanism in the leftward/rightward direction.

A printer includes a transport unit, a first head, a second head disposed downstream of the first head, a first suction unit configured to suction ink mist discharged from the first head, a second suction unit configured to suction ink mist discharged from the second head, and a suction device coupled to the first suction unit and the second suction unit, and configured to generate an airflow for suctioning the ink mist, and a first suction device disposed either one of on a first path from the first suction unit to the suction device, and at the suction device, and configured to adjust a flow rate at the first suction unit, and a second suction device disposed either one of on a second path from the second suction unit to the suction device, and at the suction device, and configured to adjust the flow rate at the second suction unit.

A liquid discharging apparatus includes: a first storage which stores liquid; a first detector which detects an amount of the liquid in the first storage; a communication hole communicating the first storage and outside; a semipermeable membrane arranged to cover the communication hole; a head unit having at least one nozzle which discharges the liquid supplied from the first storage; a liquid flow channel which communicates the first storage and the head unit; a cap which seals the nozzle of the head unit; a cap movement mechanism which moves the cap; an electrode arranged in the cap and on which the liquid discharged from the nozzle is landed; a second detector connected electrically to the electrode; a suction mechanism which sucks the liquid and gas inside the cap; a waste liquid storage which stores the liquid sucked from inside of the cap by the suction mechanism; and a controller.

A printer includes a line head and a waste liquid tank. The line head is configured to move in an A direction having a component of a horizontal direction and a component of an apparatus height direction and is configured to eject a liquid onto a sheet to make a record. The liquid ejected from the line head is collected in the waste liquid tank. The waste liquid tank is located below the line head in the Z direction. When viewed in the Z direction from top to bottom, a movement area of the line head and a portion of the waste liquid tank overlap each other over a range defined in the Y direction.