Seiko Epson Corporation

Keigo Yamasaki

Masahiko Yoshida

Tatsuya Nakano

Kohei Yuwaki

Koichi Otsuki

Shunsuke Watanabe

Akito Sato

Tomoyuki Nakano

Masahide Nakamura

Ryota Kinoshita

Takashi Mano

Naoko Omagari

Manabu Yamaguchi

Ryo Oguchi

Yutaka Kobayashi

Hiroki Sato

Yuta Inagaki

Masaaki Hagio

A recording head unit includes a first line head and a second line head in which nozzles are provided in an X-axis direction. The first line head is arranged on one side of the second line head in a Y-axis direction intersecting the X-axis direction. The first line head includes a first windbreak member. The second line head includes a second windbreak member. A length by which the first windbreak member protrudes is smaller than a length by which the second windbreak member protrudes.

Recording head unit, recording device, and recording method

A defibration processing device is capable of efficient defibration in a multiple stage rotating part, and a fibrous feedstock recycling device. The defibration processing device has a first rotating part disposed on a side into which defibration feedstock flows, and a second rotating part disposed on a side to which defibrated material defibrated in the first rotating part is discharged. The first rotating part and second rotating part each have on the axis of rotation side thereof a base, and a protruding part protruding from the base in a direction away from the axis of rotation. A spacer is between the first rotating part and second rotating part. An external restriction plate protrudes from the stationary part side toward the spacer, and an internal restriction plate protrudes from the axis of rotation side of the first rotating part and second rotating part toward the stationary part.

Defibration processing device, and fibrous feedstock recycling device

A defibration treatment apparatus including a feeding hole through which a material is fed, a rotator that rotates about a rotational central axis, a fixed member that covers at least a portion of the rotator, and a discharge opening that discharges a defibrated object obtained by defibrating the material between the rotator and the fixed member. In the defibration treatment apparatus, the rotator includes a plurality of rotary blades that extend in directions away from the rotational central axis, at least a portion of the fixed member is configured of a screen including a plurality of openings, the screen is disposed at a position corresponding to an outer rotational circumference of the rotator, and a discharge path in communication with the discharge opening is provided along the screen and on a side opposite the rotator with respect to the screen.

Defibration treatment apparatus and fiber processing apparatus

Provided is a three-dimensional modeling apparatus including: a drive motor; a screw that has a groove formation surface with a groove formed therein and that is rotated by the drive motor; a barrel that has a facing surface facing the groove formation surface and having a communication hole at the center thereof and a heater; and a nozzle that ejects a modeling material supplied from the communication hole, in which0.03&#x2264;()/()&#x2264;5.00&#x2003;&#x2003;(1)

Three-dimensional modeling apparatus and ejection unit

A plasticizing device includes: a drive motor; a rotating unit driven to rotate about a rotation axis by the drive motor and having an end surface perpendicular to the rotation axis; a barrel having a bottom surface facing the end surface of the rotating unit, and a heater; and a material supply unit supplying the material between the rotating unit and the barrel. At the bottom surface of the barrel, a first communication hole through which the molten material flows out, a first groove part coupled to the first communication hole, a second communication hole through which the molten material flows out, and a second groove part coupled to the second communication hole are formed.

Plasticizing device and three-dimensional shaping device

A plasticizing device includes: a drive motor; a rotating unit driven to rotate about a rotation axis by the drive motor and having an end surface perpendicular to the rotation axis and a lateral surface intersecting with the end surface; a barrel having a bottom surface facing the end surface of the rotating unit, and a heater; a case accommodating the rotating unit; and a material supply unit accommodating the material. At least one of the barrel and the case has a sidewall surface facing the lateral surface of the rotating unit and standing up along an outer circumference of the bottom surface of the barrel. At the bottom surface of the barrel, a communication hole through which the molten material flows out and a spiral groove part coupled to the communication hole are formed. The lateral surface of the rotating unit and the sidewall surface together define a supply space where the material is supplied from the material supply unit to the groove part.

Provided is a liquid storing body that makes it possible to prevent a liquid containing a sedimentous component whose concentration is higher than a proper range from being supplied to a liquid jetting apparatus. An ink packis provided with a flexible ink storage bagcapable of storing pigment ink containing a sedimentous component, an ink supply partprovided at an upper portion of the ink storage bag, and a flow path memberthat connects the interior of the ink storage bagand the ink supply part. The flow path memberis provided with a vertical tube partextending downward from the ink supply part, a lateral tube partextending horizontally from the lower end of the vertical tube part, and a vertical tube partextending upward from the end of the lateral tube part

Liquid storing body having multiple inflow ports

A flow path member includes a liquid flow path which includes a flow path inlet portion which has a first inlet port and a second inlet port, and a flow path outlet portion which has a first outlet port communicating with the first inlet port and a second outlet port communicating with the second inlet port, in which, in the flow path inlet portion, the first inlet port and the second inlet port are aligned in a reference direction, and in which, in a flow path extending from the first inlet port to the first outlet port and a flow path extending from the second inlet port to the second outlet port, at least parts of the flow paths, in terms of the lengths of the respective flow paths, are disposed in a direction different from the reference direction.

Flow path member, liquid ejecting head, liquid ejecting apparatus and liquid stirring method

A liquid ejecting apparatus includes: a printing head; and a liquid supply unit. The printing head has a reservoir, a plurality of liquid supply ports connected to the reservoir, and a liquid introduction inlet. A first liquid supply port and a second liquid supply port are positioned at ends of the plurality of liquid supply ports in a first direction. Outer periphery of the liquid introduction inlet includes one end section and another end section in the first direction. The one end section is closer to the first liquid supply port than the second liquid supply port. The liquid includes a first liquid with a high content of pigment, and a second liquid with a lower content of pigment. The liquid supply unit supplies the second liquid to the one end section of the liquid introduction inlet.

Liquid ejecting apparatus and liquid supply unit

A common liquid chamber that communicates with a plurality of pressure chambers includes at least one inflow port into which a liquid flows, a plurality of supply openings, arranged in a row, for supplying the liquid to each of the pressure chambers, and a slanted surface that, when viewed from a second direction that is orthogonal to an arrangement direction in which the supply openings are arranged and that follows a substrate in which the common liquid chamber is formed, is slanted so that the slanted surface overlaps with the arrangement of some of the supply openings including supply openings located at ends of the arrangement direction and approaches the arrangement of the supply openings at the end areas of the arrangement direction. At least part of the inflow port is located within the range of the arrangement of the stated some of the supply openings when viewed from the second direction. An angle of the slanted surface and a position of the inflow port are set so that a flow rate of the liquid is no less than 0.025 m/s in the vicinity of an end of the inflow port in the arrangement direction when the liquid is sucked from the nozzle openings by applying negative pressure to the nozzle openings.

Liquid ejecting head and liquid ejecting apparatus

A liquid ejection apparatus includes a liquid ejection unit including a nozzle formation surface in which an opening of a nozzle for ejecting liquid is formed; a wiper disposed so that the wiper can come in contact with the nozzle formation surface; and a liquid collection portion, which is capable of collecting liquid adhered to the wiper, disposed on an end side of the nozzle formation surface of the liquid ejection unit so as to be spaced apart from the nozzle formation surface in a wiping direction. The liquid collection portion includes a scraper having a scraping surface that scrapes off the liquid adhered to the wiper by coming in contact with the wiper, and a liquid absorbing material disposed at a position that does not come in contact with the wiper and at a position that comes in contact with an end portion of the scraping surface.

Liquid ejection apparatus

A liquid ejecting head includes a first member including a communication flow path communicating with a pressure chamber, and a second member joined to the first member and including a nozzle communicating with the communication flow path. The communication flow path includes a first flow path section adjacent to the pressure chamber, a second flow path section adjacent to the nozzle and wider than the first flow path section, and an intermediate flow path section including a sloped surface formed between the first flow path section and the second flow path section. An equation 'H&#x2212;W tan(&#x3c0;/4&#x2212;&#x3b8;/2)&#x2267;0' is satisfied in which H represents a length of the second flow path section, W represents a maximum width of the second flow path, and &#x3b8; represents an angle between an imaginary plane parallel to the bottom face of the communication flow path and the sloped surface.

At the time of setting a correction value for a certain density (subject density), a higher side density that is higher than the certain density and a lower side density that is lower than the certain density to be referenced according to the measured value of a region printed at the certain density are arbitrarily specified, and a correction value for the certain density is set by using at least one of a measured value of the density of a region printed at the arbitrarily specified higher side density and a measured value of the density of a region printed at the arbitrarily specified lower side density.

Method and apparatus for setting correction value

A printing method according to the present invention includes carrying a medium, and printing, using a nozzle for ejecting ink, a plurality of images each having a section to be detected for detecting an inclination of the image with respect to the carried medium.

Printing method, storage medium, medium, printing apparatus, method for detecting end of image, method for detecting carrying unevenness of medium, and device for detecting carrying unevenness of medium

A method for measuring density, includes: forming on a medium a pattern that consists of a plurality of dot rows formed respectively in a plurality of row regions lined up in a direction intersecting a movement direction in which a plurality of nozzles move, by forming each of the dot rows in the row region arranged in the movement direction by ejecting ink from the nozzles; reading the pattern by a scanner; measuring density of each of the row regions of the read pattern; calculating respective modification values corresponding to each of the row regions, based on at least a part of a measurement result of the density of the plurality of the row regions; and modifying respective measured values of the density of each of the row regions based on the respective modification values corresponding to each of the row regions.

Method for measuring density, printing method, method of calculating correction value, method of manufacturing printing apparatus and method for obtaining correction value

Growing community of inventors

Matsumoto, Japan

Keigo Yamasaki