There is provided a cleaning device for a liquid jet head which can efficiently clean a jet plate attached with a guard member while preventing cleaning liquid from being leaked along an opening of the guard member. The cleaning device for the inkjet head includes a holder moving relatively to the inkjet head, wherein the holder includes a jet section for jetting the cleaning liquid toward a nozzle guard of the inkjet head, a wipe part which has a width in a width direction perpendicular to a moving direction of the holder smaller than a width of an opening of the nozzle guard, and which wipes a nozzle plate due to a movement of the holder, a first suction section disposed ahead of the jet section and the wipe part in the moving direction of the holder, and a second suction section disposed posterior to the jet section and the wipe part in the moving direction of the holder.

In some examples, a printing press includes a printing unit with at least four nozzle bars, each including a print head. At least one nozzle bar has a printing position and at least one service position. For instance, in a first service position, the at least one nozzle bar has a first distance to the transport path of a printing substrate, and in a second service position the at least one nozzle bar has a second distance to the transport path. The printing unit includes at least one cleaning device and/or cleaning system that is selectively arranged in an area between the at least one nozzle bar and the transport path. The at least one service position may be arranged in vertical direction above the printing position, and the second distance of the second service position of the nozzle bar may be less than in the first service position.

A cleaning liquid includes a water-soluble organic solvent and a surfactant. The water-soluble organic solvent includes a low-vapor-pressure solvent having a saturated vapor pressure of 1.0 Pa or less at 20° C. A ratio of 1,000 times a total mass of the surfactant to a mass of the water-soluble organic solvent is greater than 0.5. A rate at which droplets of the cleaning liquid slide down on a surface to be cleaned is 3.0 mm/s or less. The rate at which droplets of the cleaning liquid slide down on the surface to be cleaned is preferably 2.5 mm/s or less. A viscosity of the cleaning liquid at 25° C. is preferably 8 mPa.Math.s or greater. A surface tension of the cleaning liquid is preferably 50 mN/m or less.

A wash fluid for use in an inkjet recording apparatus contains water, a coconut oil fatty acid surfactant, an organic deliquescent agent, a polyhydric alcohol, and a basic inorganic compound. The polyhydric alcohol is an alkanediol. The coconut oil fatty acid surfactant is contained in an amount of at least 0.01% by mass and no greater than 3.00% by mass. The organic deliquescent agent is contained in an amount of at least 0.10% by mass and no greater than 30.00% by mass.

A head unit includes a recording head, a head-side frame, a unit frame, a first head mounting member, a second head mounting member, a head angle adjustment mechanism, and an urging member. The unit frame is configured to hold the recording head on both side surfaces of a main frame standing along a width direction orthogonal to a conveyance direction of a recording medium. The urging member is arranged on a side opposite to an opposing surface of the first head mounting member and the second head mounting member with respect to the main frame, and is configured to urge the head-side frame in a direction of separating away from the main frame, A counteraction of a pressing force that acts on the head-side frame from the urging member acts on the first head mounting member and the second head mounting member from the head-side frame.

The present invention provides an inkjet recording device capable of automatically cleaning the head tip and a cleaning method for inkjet recording apparatus.

An inkjet recording apparatus has a printhead that receives a supply of ink and prints, a main unit that supplies said ink to said printhead, and a cleaning unit that has a cleaning tank into which said entire printhead is inserted and injects a cleaning solution from a cleaning nozzle to said printhead for cleaning. The cleaning unit has a cleaning nozzle that sprays cleaning liquid into the cleaning tank and a cleaning base section that has a housing section that accommodates the tip of the printhead and allows said cleaning liquid to flow into the housing section. The cleaning liquid is allowed to flow into the housing section to clean the tip of the printhead.

A liquid ejecting apparatus includes: a liquid ejecting portion configured to eject a liquid from a nozzle disposed in a nozzle surface; a wiping mechanism configured to execute a wiping operation of wiping the nozzle surface with a strip-shaped member, which is configured to absorb the liquid ejected by the liquid ejecting portion, in contact with the nozzle surface; a wiping solution supply mechanism configured to supply a wiping solution to the strip-shaped member before the wiping operation is performed; and a control portion, and the control portion reduces the amount of the wiping solution held in the strip-shaped member in the wiping operation when the nozzle surface with a large amount of the liquid adhering thereto is wiped as compared with the amount of the wiping solution when the nozzle surface with a small amount of the liquid adhering thereto is wiped.

Examples describe maintenance scheduling of printhead in an image forming device by monitoring image data processed by an image forming device, determining that the image data processed by the image forming device comprises color image data, and generating a firing signal based on a mode of the image forming device.

An inkjet recording device includes: an inkjet unit that ejects ink to a recording medium while scanning in a main scanning direction; a first treatment liquid ejection head that is arranged side by side with the inkjet unit in the main scanning direction, scans together with the inkjet unit, and ejects a first treatment liquid to the recording medium; and a second treatment liquid ejection head that is arranged side by side with the inkjet unit in the main scanning direction, scans together with the inkjet unit, and ejects a second treatment liquid different from the first treatment liquid to the recording medium, wherein at least one of the first treatment liquid ejection head and the second treatment liquid ejection head is arranged on both sides of the inkjet unit in the main scanning direction.

There is provided a maintenance liquid, which is used in maintenance of a device equipped with a discharge head for discharging an ultraviolet ray curable-type composition containing the acyl phosphine oxide-based photopolymerization initiator toward an attachment object, including a polymerizable compound in which a saturation solubility of an acyl phosphine oxide-based photopolymerization initiator at 20° C. is equal to or greater than 5.0% by mass.