Fujifilm Corporation

Fuji Photo Film Company, Limited

Hiroshi Mataki

Hiroshi Inoue

Jun Yamanobe

Seiichi Inoue

Hirotaka Watano

Provided are a liquid jetting device, a liquid jetting head cleaning device, and a liquid jetting head cleaning method, in which an increase in the number of jetting failures is suppressed in a case where a nozzle surface of a liquid jetting head is cleaned by causing a napped wiping member to abut against the nozzle surface. The problem is solved by a liquid jetting head cleaning device, in which first cleaning is performed on a liquid jetting head by causing a napped wiping member to abut against a nozzle surface of the liquid jetting head, second cleaning is performed on the liquid jetting head by causing a liquid to be first pre-jetted from a nozzle of the liquid jetting head after the first cleaning and causing an unnapped wiping member to abut against the nozzle surface of the liquid jetting head after the first pre-jetting, the liquid is pre-jetted from the nozzle of the liquid jetting head after the second cleaning, and the number of times of jetting in the first pre-jetting is larger than the number of times of jetting in the second pre-jetting.

Liquid jetting device, liquid jetting head cleaning device, and liquid jetting head cleaning method

A printing apparatus and a printing method that can reduce a difference in glossiness in an in-plane direction of a printed matter to which aqueous varnish has been applied. The apparatus and method satisfy a relationship of 'Tp&#x2212;(40/6)&#xd7;tw&#x2264;a' when the temperature of a recording surface at the time of application of aqueous varnish containing water is denoted by Tp, coating formation time of the aqueous varnish is denoted by tw, and a constant determined according to an allowable value of a gloss difference, which is a difference between glossiness of the recording surface of a printed matter of which applied aqueous varnish has been dried in a first direction and glossiness of the recording surface in a direction orthogonal to the first direction, is denoted by a. Here, the unit of the temperature Tp is &#xb0; C. and the unit of the coating formation time tw is minute.

Printing apparatus and printing method

Provided are a nozzle wiping sheet, a nozzle wiping unit, and an image forming apparatus capable of preventing occurrence of streaks during printing immediately after maintenance. A wiping member () wipes a nozzle surface (K) of a jetting head (K) provided with a nozzle through which liquid droplets are jetted, in which a shape of the liquid droplet added dropwise to the wiping member () after a cleaning liquid () is added to the wiping member () satisfies the following condition when an aspect ratio of the liquid droplet after 40 seconds after the addition of the cleaning liquid () is assumed to be R, and the R is 1.3 or more.

Nozzle wiping sheet, nozzle wiping unit, and image forming apparatus

Provided are a wiping mechanism, a liquid droplet jetting apparatus, and a wiping method capable of securing an absorption capacity of a wiping member which absorbs a liquid adhered to a nozzle surface while preventing infiltration of bubbles into a nozzle when the nozzle surface is wiped by the wiping member. The nozzle surface is wiped by the wiping member which has one surfaceA that comes into contact with the nozzle surface in which a plurality of nozzles through which liquid droplets are jetted are formed, and has a plurality of voids M that form capillaries from the one surfaceA side to the other surfaceB side, the voids M being greater in size on the other surfaceB side than on the one surface sideA among the plurality of voids M.

Wiping mechanism, liquid droplet jetting apparatus, and wiping method

A method of performing pattern transfer includes the steps of: applying liquid to a substrate, while performing relative movement of the substrate and a liquid ejection head having a plurality of nozzles, by performing ejection and deposition of a plurality of droplets of the liquid from the nozzles onto the substrate in a state where a shape of each of the droplets upon the deposition is not a single circular shape and each of the droplets does not combine with adjacent another of the droplets on the substrate; and curing the liquid that has been applied to the substrate in the applying step while pressing a pattern forming surface of a stamper having a prescribed projection-recess pattern against the liquid.

Pattern transfer method and apparatus

A line image forming method includes the steps of: ejecting a plurality of droplets of liquid sequentially from an inkjet head, the liquid containing a functional component; and depositing the droplets of the liquid onto a non-permeable medium, the deposited droplets becoming joined together on the non-permeable medium to form a line pattern of the liquid, wherein a receding contact angle of the liquid with respect to the non-permeable medium being not larger than 10&#xb0;.

Line image forming method and apparatus

The pattern transfer apparatus includes: a liquid ejection device having liquid ejection ports through which droplets of liquid are ejected and deposited onto a substrate surface while the liquid ejection device relatively moves to scan the substrate surface in a relative scanning direction; and a stamp having a stamp surface on which a pattern is formed, the stamp surface being applied to the droplets of the liquid on the substrate surface in a stamp application direction while the stamp is relatively moved with respect to the substrate, wherein when defining, on the substrate surface, strips which are straight and parallel to the stamp application direction and have widths substantially equal to diameters of the droplets deposited on the substrate surface, at least one of the strips includes the droplets which are ejected respectively from at least different two of the liquid ejection ports of the liquid ejection device.

Pattern transfer apparatus and pattern forming method

A layer-forming apparatus coats a solution containing a layer component and a flammable solvent on a surface of a base material, and forms a layer on the surface of the base material. In the layer-forming apparatus, a coating chamber in which the solution is coated on the surface of the base material is closed substantially hermetically, and a clean air is supplied from a clean-air supplier to the coating chamber. Then, ions that are produced by a corona discharger are sprayed to the surface of the base material in a state that a vapor concentration of the solvent in the coating chamber is below a burning lower limit, and dusts are removed from the base material. Then, the solution is coated on the surface of the base material from which the dusts are removed.

Layer forming method and layer forming apparatus, and method of manufacturing radiation detector

When a linear pattern is drawn on a non-permeable medium by ejecting droplets of liquid onto the non-permeable medium by using an inkjet method, drawing of the linear pattern is started from a middle portion of the linear pattern.

Line drawing method

The liquid coating method includes the step of ejecting droplets from nozzles of a recording head onto an imaging region of a surface of a substrate placed on a support plate, wherein a dot pitch &#x3c6; that is an interval between landing positions of the droplets on the surface of the substrate satisfies a following condition: where V stands for a volume of a droplet ejected from each of the nozzles and &#x3b8;stands for an advancing contact angle of the droplet against the substrate.

Liquid coating method, liquid coating device, and method of manufacturing radiation detector

A pattern forming method includes the step of ejecting droplets of a liquid containing a functional component, from nozzles of an inkjet recording head onto a surface of a substrate in one direction in sequence so as to form a linear pattern on the surface of the substrate, wherein: the inkjet recording head is controlled in such a manner that is satisfied where d denotes a diameter of the droplets of the liquid before depositing on the surface of the substrate, &#x3b8; denotes a contact angle of the droplets of the liquid with respect to the substrate, and p denotes a dot pitch of the droplets of the liquid that are adjacently deposited on the surface of the substrate, and the droplets of the liquid contain a volatile solvent with volume ratio not less than 

Pattern forming method

The image forming apparatus comprises: a plurality of ejection ports through which liquid is ejected toward a prescribed recording medium; a plurality of pressure chambers which are respectively connected to the plurality of ejection ports; a plurality of first actuators which respectively change volume of the plurality of pressure chambers; a common liquid chamber which is connected to the plurality of pressure chambers; a second actuator which changes volume of the common liquid chamber; and a drive unit which supplies drive signals to the first actuators and the second actuator, such that the first actuators cause the volume of the pressure chambers to contract to eject the liquid through the ejection ports and subsequently to expand the volume of the pressure chambers, and causes the second actuator to contract the volume of the common liquid chamber after the volume of the pressure chambers has been expanded.

Image forming method

The liquid ejection head has an ejection unit which includes: a nozzle ejecting a droplet of liquid; a pressure chamber connected to the nozzle; a displacement generating device which changes a volume of the pressure chamber; and a supply flow channel which is connected to the pressure chamber and supplies the liquid to the pressure chamber, wherein a resonance frequency f (kHz) of the ejection unit and an ejection speed v (m/s) of the droplet ejected by the nozzle satisfy a following relationship: f&#x3e;31&#xd7;v+80.

Liquid ejection head and image forming apparatus

The liquid ejection head comprises: a nozzle through which liquid is ejected; a pressure chamber which stores the liquid ejected through the nozzle; a pressurizing device which changes a volume of the pressure chamber to apply pressure to the liquid stored in the pressure chamber; and a supply port through which the liquid is supplied to the pressure chamber, wherein the liquid ejection head has a structure such that inertance Mn of the nozzle, liquid resistance Rn of the nozzle, compliance Cn caused by a surface tension of the liquid in the nozzle, inertance Ms of the supply port, and liquid resistance Rn of the supply port satisfy the following inequality: so that oscillation of a meniscus surface located in vicinity of the nozzle is controlled at a time of refill when the liquid is filled in the pressure chamber through the supply port after the liquid is ejected from the nozzle.

Liquid ejection head, liquid ejection apparatus, and drive control method

A liquid droplet ejection apparatus comprises: a nozzle from which a liquid droplet is ejected; a pressure chamber filled with liquid to which a pressure is applied in order to eject the liquid in a form of the liquid droplet from the nozzle; and a supply port which supplies the liquid to the pressure chamber, wherein inertance Mn of the nozzle, resistance Rn of the nozzle, compliance Cn of a nozzle section due to surface tension, inertance Ms of the supply port, and resistance Rs of the supply port satisfy the following two formulas: 

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Kanagawa, Japan

Hiroshi Mataki