Seiko Epson Corporation

Sadaharu Komori

Satoru Katagami

Takeshi Ito

Takahiro Imai

Kei Hiruma

Kazumi Aruga

Tsuyoshi Kato

Tamotsu Goto

Toru Igarashi

Masahide Nakamura

Hiroshi Takiguchi

Masaya Shibatani

Yuki Oguchi

Hidekazu Moriyama

Junichi Sano

Yoshiyuki Nagai

Kazuma Miyazawa

Mitsuhiro Isobe

Hirofumi Kobayashi

Soichiro Seo

Hirofumi Nakata

A web manufacturing apparatus includes a defibration section that includes a rotating blade and is configured to defibrate a material containing fiber, a detection section configured to detect an electric charge amount of a defibrated material obtained by the defibration section, and a control section configured to control operation of the defibration section. The control section includes a first mode in which a revolution speed of the rotating blade is set based on a detection result of the detection section.

Web manufacturing apparatus and sheet manufacturing apparatus

A web forming device includes: a defibrator having a variable speed rotor, and configured to defibrate defibration feedstock by rotation of the rotor; an accumulator on which defibrated material defibrated by the defibrator accumulates; a thickness detector configured to detect a thickness of the defibrated material accumulated on the accumulator; and a controller configured to control a rotational velocity of the rotor based on a detection result from the thickness detector. The controller applies either or both a first control and a second control, the first control decreasing the rotational velocity of the rotor when variation in the thickness of the deposited defibrated material detected by the thickness detector exceeds a first tolerance, and the second control increasing the rotational velocity of the rotor when a slope of change over time in a thickness of the deposited defibrated material detected by the thickness detector is less than a second tolerance.

Web forming device, web forming method, and sheet manufacturing apparatus

A droplet discharge device is configured to control the drive corresponding to a prescribed set of the nozzles selected to discharge droplets during a main scan when the droplets are arranged in the first partition regions, based on a pre-measured distribution of a droplet discharge amount of each of the prescribed set of the nozzles so that the droplet discharge amount approximates a predetermined optimal amount, and to control the drive waveforms corresponding to the nozzles included in a plurality of potential combinations of the nozzles selected to discharge droplets during a main scan when the droplets are arranged in the second partition regions, based on a pre-measured distribution of an average droplet discharge amount calculated from an amount of droplets discharged from the each of the nozzles in all the potential combinations so that the droplet discharge amount approximates the predetermined optimal amount.

Droplet discharge device and method for forming thin film

A droplet discharge device includes a droplet discharge head, a feed reel, a drying chamber, a drying-gas-introducing device, a take-up reel, an imaging device, an analyzing unit and a control unit. The imaging device captures an image of functional liquid discharged from nozzles of the droplet discharge head onto a sheet member between the feed reel and the take-up reel with the sheet member having been dried in the drying chamber filled with a drying gas to achieve a predetermined humidity. The analyzing unit measures an area over which the functional liquid is deposited on the sheet member from each of the nozzles, and calculates a distribution of a discharge amount of the functional liquid. The control unit adjusts a voltage applied to the drive elements so that the discharge amount of the functional liquid from each of the nozzles approximates a predetermined optimum amount.

Droplet discharge device, method for discharging droplets, and method for manufacturing color filter

An electro-optical device includes a substrate having a plurality of film-formation regions configured and arranged to receive a liquid material discharged from a plurality of nozzles of a nozzle row while the substrate and the nozzle row are moved relative to each other in a primary scanning direction. Each of the film-formation regions includes a plurality of landing positions in which the liquid material lands with the landing positions being set by a nozzle interval in a direction of the nozzle row and a discharge interval in the primary scanning direction. At least two or more of the film-formation regions include a portion in which a total number of the landing positions in the at least two or more of the film-formation regions that simultaneously face the nozzles is the same in the primary scanning direction.

Electro-optical device and electronic instrument

A liquid discharge method is a method for depositing liquid on a plurality of target discharge partitioned areas formed on a substrate as the liquid is selectively discharged from a plurality of discharge nozzles while the substrate and the discharge nozzles are moved relative to each other. The liquid discharge method includes setting an arrangement pattern according to shapes and positions of the target discharge partitioned areas so that a number of the discharge nozzles selected to be used among the discharge nozzles capable of depositing the liquid in the target discharge partitioned areas is the same in each discharge timing.

Liquid discharge method and liquid discharge device

Provided herein is a head unit arrangement method for arranging a plurality of head units in a liquid droplet ejection device that plots an image in a matrix form with functional liquid droplets in a number n of colors by performing the number n of primary scans and a number (n&#x2212;1) of secondary scans. The head unit arrangement method includes evaluating liquid droplet ejection performance of each of the head units based on an inspection result of a volume of liquid droplet ejection from each of the functional liquid droplet ejection heads to arrange two of the head units that exhibit the lowest liquid droplet ejection performance at both ends in the Y-axis direction.

Head unit arrangement method, liquid droplet ejection apparatus, method of manufacturing electro-optic device, and electro-optic device

A color filter manufacturing method includes discharging droplets of an ink from a droplet discharge head into a plurality of cells formed on a substrate while moving the substrate with respect to the droplet discharge head, and curing the ink discharged in the cells to form a colored portion within each of the cells. The discharging of the droplets includes prohibiting landing of the droplets in a landing prohibition region formed at a predetermined width from edges of each of the cells in a movement direction of the substrate with respect to the droplet discharge head. The landing prohibition region being arranged so that a relationship 0.5&#x2266;L/L&#x2266;4.5 is satisfied, wherein a value Lindicates a width of the landing prohibition region and a value Lindicates an average diameter of the droplets of the ink.

Color filter manufacturing method, color filter, image display device, and electronic device

A method for setting up a condition for a drive signal in a liquid ejection head that includes a plurality of linearly-arranged nozzles and driving elements provided for each of the nozzles, includes: calculating an ejection rate for each nozzle relating to a supply of the drive signal under a predetermined condition by using a moving average; classifying the plurality of nozzles into a plurality of groups based on the ejection rate calculated by using the moving average of each nozzle; calculating a proper condition for the drive signal corresponding to each group based on a statistical value of the ejection rate relating to the group; and selecting one proper condition among proper conditions corresponding to the groups so as to set the selected proper condition for each nozzle.

Method for setting up drive signal

A method for setting up a condition for a drive signal in a liquid ejection head that includes a plurality of linearly-arranged nozzles and driving elements provided for each of the nozzles, includes: calculating an average value or a median value of ejection rates for each nozzle relating to a supply of the drive signal under a plurality of conditions; classifying the plurality of nozzles into a plurality of groups based on the average value or the median value of the ejection rates; calculating a proper condition for the drive signal corresponding to each group based on a statistical value of the ejection rate relating to the group; and selecting one proper condition among proper conditions corresponding to the groups so as to set the selected proper condition for each nozzle.

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Shiojiri, Japan

Sadaharu Komori