Fuji Photo Film Company, Limited

Fujifilm Corporation

Kazuo Sanada

Tsutomu Takatsuka

Ryoichi Yamamoto

Seiichi Inoue

Yasuhiko Kachi

Kenichi Kodama

Tsutomu Yokouchi

Hirofumi Saita

Shizuo Umemura

Toshiya Kojima

Kazuaki Okamori

Koichi Kimura

Hiroshi Inoue

Hiroshi Kawakami

Toshiyuki Makuta

Katsumi Enomoto

Tsuyoshi Mita

Toshihiko Yamada

Kanji Nagashima

Kazuhiro Tsujita

Seiichiro Oku

Hideaki Nomura

Kyohei Mochizuki

Wataru Ono

An inkjet recording method of the present invention includes preparing an inkjet recording apparatus having an inkjet head that has N (N&#x2267;4) nozzle arrays, so as to respectively discharge inks of at least four colors of cyan, magenta, yellow and black, having nozzles arranged in a first direction at a predetermined pitch P for discharging a curable ink which is cured by providing active energy, each of the nozzle arrays is arranged to be shifted in the first direction so as to have distances of more than 0 among each virtual line extending from each nozzle in a second direction perpendicular to the first direction, in which the viscosity of any of the respective inks at 25&#xb0; C. is 10 to 30 mPa&#xb7;s.

Inkjet recording method using nozzle arrays and printed material obtained by the inkjet recording method

An inkjet recording apparatus for forming an image by discharging an ink including an ink pigment and a polymerizable compound containing at least an N-vinyl lactam, in which the 90% diameter in cumulative volume distribution of the particle diameters of the ink pigment is equal to or less than 500 nm and the content of N-vinyl lactam is 3% to 24%, from nozzles of an inkjet head, which includes nozzle arrays having nozzles each of which discharges a curable ink cured by applied active energy and which are arranged in the first direction at a pitch P, the nozzle arrays being N (N&#x2267;4) nozzle arrays of every color, which respectively discharge thick inks of at least four colors and which nozzle arrays are arranged to be shifted by P/N away from each other in the first direction.

Inkjet recording apparatus and inkjet recording method

An inkjet recording apparatus includes: an inkjet head which has a nozzle and an ejection energy generating element configured to cause droplets to be ejected from an ejection port of the nozzle; a head movement device which is configured to reciprocally move the inkjet head to scan a recording medium onto which the droplets ejected from the inkjet head are deposited; a linear encoder which is configured to output signals to determine a position of the inkjet head; an ejection trigger signal generating device which is configured to generate ejection trigger signals in accordance with the output signals of the linear encoder, the ejection trigger signals specifying ejection timings of the inkjet head with a temporal resolution of 0.1 &#x3bc;s order; and an ejection control device which is configured to cause the inkjet head to eject the droplets in accordance with the ejection timings specified by the ejection trigger signals.

Inkjet recording apparatus and method

In an inkjet head which has nozzle rows having nozzles each of which ejects curable inks cured by imparted activation energy and which are arranged in a first direction at a pitch P, the nozzle rows being N (N&#x2267;5) nozzle rows of every color which eject, respectively, thick inks of four colors including cyan, magenta, yellow and black, and at least one light ink among light inks similar in color tone to the thick inks, the nozzles in each of the nozzle rows are arranged so as to be shifted by P/N from each other in a first direction, a nozzle of an ink with lowest cure sensitivity is arranged on the most upstream side in a direction of relative movement of a recording medium in the first direction, and further the nozzle of light ink is arranged in between the nozzles of two different thick inks.

Inkjet recording apparatus and method for controlling the same

An inkjet recording apparatus includes: an inkjet head having nozzles which eject ink onto a recording medium, the ink being curable by irradiation of an active light beam; a relative movement device recording medium; an active light beam irradiation device having an active light beam emission unit that emits the active light beam and is divided into units in a direction of the relative movement for irradiating the ink deposited on the recording medium with the active light beam while relative movement between the recording medium and the active light beam irradiation device is caused along with the inkjet head; and an active light beam irradiation control device which controls on or off switching with respect to each of the divided units.

Inkjet recording apparatus and image forming method

An inkjet recording apparatus and an image forming method in which ink curing defects caused by differences in the activation energy absorption characteristics due to differences in the inks are avoided, and a desirable curing process can be achieved.

The image recording apparatus includes: a recording head which has at least one row of recording elements arranged at a prescribed arrangement interval in a sub-scanning direction; a scanning device which moves the recording head in a main scanning direction so as to perform recording of a same main scanning line by means of a plurality of scans in the main scanning direction with respect to a recording medium; a conveyance device which conveys the recording head and the recording medium relatively to each other in the sub-scanning direction; a recording control device which controls the recording head to perform recording by using at least two of the recording elements in the recording of the same main scanning line; a recording element selection device which selects a combination of the recording elements to perform recording of the same main scanning line in accordance with a status of each of the recording elements; and a conveyance control device which determines a combination of feed amounts in the sub-scanning direction corresponding to the combination of the recording elements selected by the recording element selection device and controls the conveyance device in accordance with the determined combination of feed amounts in the sub-scanning direction.

Image recording apparatus and image recording method

A method for inkjet recording capable of providing an image in which occurrence of color hue difference (color change) is suppressed irrespective of a manner of treatment, which method includes recording an image by jetting an ink by an inkjet method on an inkjet recording medium including a substrate and an ink receiving layer including inorganic fine particles and a water-soluble metal compound provided on the substrate, and drying at least the image recorded on the inkjet recording medium, wherein the inkjet recording medium includes a substrate, a first ink receiving layer including inorganic fine particles and a nitrogen-containing organic cationic polymer, and a second ink receiving layer including inorganic fine particles and a water-soluble metal compound on the substrate in this order from the substrate side, wherein the first ink receiving layer contains the nitrogen-containing organic cationic polymer by a higher content and the water-soluble metal compound by a lower content than those in the second ink receiving layer.

Method for inkjet recording

The present invention provides an ink-jet recording apparatus having a driving rolland press-contact rollsandthat transport an ink-jet recording medium, an ink-jet headejecting an ink onto the transported ink-jet recording medium, and a drying device drying the ink ejected from the ink-jet head, providing images in which density is high and hue difference (color change) is prevented from being developed, and an ink-jet recording method using the ink-jet recording apparatus.

Ink-jet recording apparatus and ink-jet recording method

A droplet ejecting apparatus for discharging liquid from nozzles of pressure chambers by supplying liquid from a liquid tank to said pressure chambers and then contracting said pressure chambers by means of piezoelectric elements, comprising:

Droplet ejecting apparatus

Inkjet head, method of manufacturing inkjet head, and inkjet recording apparatus

The liquid ejection head includes: a nozzle plate which has a plurality of ejection apertures through which a liquid is ejected; a plurality of pressure chambers which are connected respectively to the ejection apertures; a plurality of liquid supply flow channels which supply the liquid respectively to the pressure chambers; a common liquid chamber which supplies the liquid to the liquid supply flow channels; a plurality of pressure generating devices which respectively deform the pressure chambers; and a plurality of electrical wires which supply drive signals to the pressure chamber generating devices, wherein the electrical wires are provided so as to pass through the common liquid chamber.

Liquid ejection head and image forming apparatus comprising same

The liquid ejection head comprises: a plurality of nozzles through which liquid is ejected in an ejection direction; a plurality of pressure chambers which are connected respectively to the nozzles and filled with the liquid; and a plurality of piezoelectric elements which are provided respectively for the pressure chambers, the piezoelectric elements deforming to pressurize and cause the liquid in the pressure chambers to be ejected through the nozzles, the piezoelectric elements being substantially thin plate-shaped and layered in a thickness direction of the piezoelectric elements, the thickness direction being substantially perpendicular to the ejection direction.

Liquid ejection head and image forming apparatus

The liquid ejection head comprises: a pressure chamber which is connected to an ejection port ejecting liquid; an actuator which is disposed inside the pressure chamber and deforms due to prescribed driving; a holding member which holds the actuator; and a shielding member which, when a surface of the actuator held by the holding member is a bottom face, seals off the liquid inside the pressure chamber from side faces of the actuator, while allowing an upper surface of the actuator to make contact with the liquid inside the pressure chamber.

Liquid ejection head, method of manufacturing same, and image forming apparatus

The liquid ejection head comprises: a nozzle surface on which a plurality of nozzles are arranged; a diaphragm on which a plurality of piezoelectric elements are arranged; a plurality of pressure chambers which are defined between the nozzle surface and the diaphragm, each of the plurality of pressure chambers applying pressure to liquid which is ejected from a corresponding one of the plurality of nozzles; a common liquid chamber which is defined on a side of the diaphragm opposite to a side of the diaphragm on which the plurality of pressure chambers are defined, the common liquid chamber communicating with each of the plurality of pressure chambers via a corresponding supply port, at least a portion of a surface of the common liquid chamber which contacts liquid being made as a thin layer; and a plurality of electrical wires which are formed in a direction substantially perpendicular to a surface of the diaphragm on which the piezoelectric elements are arranged, at least a portion of each of the electrical wires passing through the common liquid chamber.

Growing community of inventors

Kanagawa, Japan

Kazuo Sanada