Patents Assigned to Seiko Epson Corporation
  • Patent number: 10864744
    Abstract: A liquid ejecting apparatus includes: a liquid ejecting head configured to eject liquid contained in a liquid container; a display portion configured to display information; a remaining amount detection portion configured to detect that a remaining amount of the liquid contained in the liquid container becomes less than a threshold value; and a control portion configured to control display of the display portion, in which the control portion causes the display portion to display a calculation remaining amount calculated based on an initial amount of storage of the liquid contained in the liquid container, a total discharge amount of the liquid discharged from the liquid ejecting head, and a correction amount corresponding to a use environment.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: December 15, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Takeo Seino
  • Patent number: 10868932
    Abstract: An image reading device includes: a first reading unit that is provided at an intermediate position of a transport path and that reads an image of a document transported on the transport path; and a transport unit that is disposed on the transport path further upstream than the first reading unit and that transports the document to the first reading unit. The transport unit includes a third driving roller and third driven rollers that hold the document between the third driving roller and the third driven rollers. The third driving roller is provided on a frame main body, and the third driven rollers are provided on a holder member. When a cover is displaced from a closed position to an open position, the holder member is moved so as to separate the third driven rollers from the third driving roller.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: December 15, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Seiji Kawabata, Takeshi Aoki
  • Patent number: 10866497
    Abstract: A wavelength conversion device includes a phosphor layer that is excited by excitation light to thereby emit light in a wavelength band different from a wavelength band of the excitation light, a base material that includes a first surface and holds the phosphor layer on the first surface, and a third lens disposed to be opposed to the phosphor layer. An opening section juxtaposed with the phosphor layer is provided on the first surface. A channel that causes the opening section and the outside of the wavelength conversion device to communicate is provided in the base material. The third lens includes an opposed surface opposed to the phosphor layer and the opening section.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: December 15, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 10868586
    Abstract: A control device controls a first power transmission driver that applies a first drive signal to a first primary coil and a second power transmission driver that applies a second drive signal to a second primary coil. When intermittent power transmission is performed by applying the second drive signal in a period in which normal power transmission is performed by applying the first drive signal, a controller of the control device sets the phase difference between the first drive signal and the second drive signal to a predetermined phase difference.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: December 15, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kota Onishi
  • Patent number: 10864757
    Abstract: In a printer, a medium transporting apparatus includes a straight path through which a medium on which recording has been performed with the recording head is output, an inversion path through which the recording medium on which recording has been performed with the recording head is output to an output destination different from an output destination of the straight path, a switching member provided downstream of the recording head in a medium transport direction and configured to switch between a first state in which the switching member constitutes a portion of the straight path and a second state in which the switching member constitutes a portion of the inversion path, a motor that drives a pair of transport rollers that transports the medium, and a switching mechanism that switches between a first state and a second state with motive power of the motor.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: December 15, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Keisuke Sasaki, Takayuki Tanaka, Toshiki Shiroki
  • Publication number: 20200387057
    Abstract: A projector including a cooling target includes a light source, a light modulator, a projection optical apparatus, and a cooler configured to cool the cooling target based on transformation of a refrigerant into a gas. The cooler includes a refrigerant generator configured to generate the refrigerant, a refrigerant sender configured to send the generated refrigerant toward the cooling target, and a cooling air blower configured to deliver air to the cooling target. The cooling target includes a cooling target main body and a cooled part which is thermally coupled to the cooling target main body and to which the refrigerant is sent from the refrigerant sender. The cooled part is disposed on a downstream of the cooling target main body in the flowing direction of the air delivered from the cooling air blower to the cooling target.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 10, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Nobuo SUGIYAMA
  • Publication number: 20200388244
    Abstract: A method of operation performed by a display device displaying an image on a display surface includes the steps of displaying a first image in the display surface's first area, and displaying second image in a second area different from the display surface's first area, displaying a third image formed by superimposing a writing image to the second image on the second image in second area instead of the second image, determining whether or not a condition for changing an image to be displayed in the first and second area is fulfilled, and changing the image to be displayed in the first area from first image to third image and changing image to be displayed in second area from third image to a fourth image when it is determined that the condition is wherein the first image is displayed in first area and third image is displayed in second area.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 10, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Yoshiteru UCHIYAMA
  • Publication number: 20200389630
    Abstract: A projector includes a selection section configured to select an interface to which an image signal to be displayed by the projector out of the plurality of interfaces is input, a determination section configured to determine whether or not the interface selected is a compliant interface capable of establishing daisy chain connection, and a function control section configured to make the transition of the projector to a state of preventing a daisy chain function from being executed when the interface selected is not the compliant interface, and when the daisy chain function which can be executed in a state in which the projector is coupled to another projector with the daisy chain connection is set available.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 10, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Toshiki FUJIMORI, Shingo YOSHIDA, Takaaki OZAWA
  • Publication number: 20200388241
    Abstract: A control method including home screen display step of making display section display a home screen where identification images representing the respective input interfaces are displayed in respective display areas so as to correspond one-to-one when image information is not input to N input interfaces provided to the display device, determination step of determining whether one of the input interfaces has changed to state in which the image information is input, identification step of identifying display area having the highest priority representing an order of displaying image out of the display areas where the identification images are currently displayed when the determination result is affirmative, and home screen information update step of displaying image input to input interface in display area thus identified, and displaying the identification images of the input interfaces in the state in which the image information is not input in the display areas lower in priority.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 10, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Yoshiteru UCHIYAMA
  • Publication number: 20200388639
    Abstract: Provided is an electro-optical device including a plurality of pixel electrodes arranged in a display region, a first transistor that captures a pulse supplied to a source node by using a clock signal supplied to a gate node and outputs the pulse from the drain node, a second transistor to which the pulse output from the drain node is input, and a capacitance element having one end coupled to the drain node and another end held at a predetermined potential. In the capacitance element, an interlayer insulating film is sandwiched between a first peripheral electrode formed of a same layer as the plurality of pixel electrodes and a wiring formed of a predetermined electrode layer, and the wiring includes a portion overlapping the second transistor in plan view.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 10, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Shinsuke FUJIKAWA
  • Publication number: 20200384785
    Abstract: A winding device includes a winding portion that winds a continuous medium, a friction roller that contacts the continuous medium while the continuous medium is being fed to the winding portion and that applies friction resistance to the continuous medium, and a roller driving portion that causes the friction roller to rotate in a direction in which the continuous medium is fed, in which the roller driving portion includes a roller gear train that transmits rotation of a feed motor, which is input via a winding-portion gear train, to the friction roller.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 10, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Akihiro SHINTANI
  • Publication number: 20200388240
    Abstract: A method of controlling a display device according to the present disclosure includes the steps of executing input determination on whether or not the image information is input to the input interface, making the display section display an input state image including one of an input image representing that the image information is input and a non-input image representing that the image information is not input in accordance with a result of the input determination, making the display section display a display image based on the image information when receiving an operation of designating the input image, and making the display section display a procedure image representing a procedure of inputting the image information to the input interface when receiving an operation of designating the non-input image.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 10, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takaaki OZAWA, Yasuhiro NAKAMURA
  • Publication number: 20200387059
    Abstract: A wavelength converter according to the present disclosure includes a wavelength conversion layer having a first surface on which excitation light that belongs to a first wavelength band is incident and a second surface different from the first surface and converts the excitation light into fluorescence that belongs to a second wavelength band different from the first wavelength band, and a base so provided as to face the second surface. The base includes a first heat dissipation section so provided as to face a light incident area of the first surface that is an area on which the excitation light is incident and a second heat dissipation section the thermal conductivity of which in a first direction that intersects the first surface is lower than the thermal conductivity of the first heat dissipation section.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 10, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Kunihiko TAKAGI
  • Patent number: 10858526
    Abstract: A water-based ink composition for ink jet recording and a coloring material liquid according to an aspect includes at least one selected from the group consisting of vinylphenol and a vinylphenol derivative, a water-soluble organic solvent, and water.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: December 8, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Hiroshi Ito
  • Patent number: 10859836
    Abstract: A head-mounted display includes a display device, a projection optical member, and a prism member. The prism member includes a first prism receiving image light from the projection optical member, and a second prism disposed at a position further toward an exit pupil than the first prism. The first prism includes an entrance surface, a first reflection surface, and a first joining surface, the second prism includes a second joining surface joined to the first joining surface via a semi-transmissive reflection surface, a second reflection surface, and a light collecting reflection surface, and the semi-transmissive reflection surface is configured to reflect the image light, reflected by the light collecting reflection surface and then totally reflected by the second reflection surface, to pass through the second reflection surface.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: December 8, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Akira Komatsu, Masayuki Takagi, Toshiaki Miyao, Takashi Takeda, Tokito Yamaguchi
  • Patent number: 10861363
    Abstract: A display driver (100) includes a drive circuit (130) that drives an electro-optical panel (200), a control circuit (110) that controls the drive circuit (130), an error detection circuit (115) that detects an error in the display driver (100), and a counter (125) that performs count processing with respect to information regarding the number of times of error detection in an operating period of the display driver (100). The control circuit performs control such that information regarding the accumulated number of times of detection of the error is stored in a nonvolatile memory that can retain storage contents even if power is not supplied, based on the information regarding the number of times of detection.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: December 8, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Norichika Muraki
  • Patent number: 10858614
    Abstract: 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.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: December 8, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Keitaro Nakano, Chigusa Sato, Mitsuaki Yoshizawa
  • Patent number: 10862476
    Abstract: A semiconductor device provided with a first node to which a first power supply potential is supplied, a second node to which a second power supply potential lower than the first power supply potential is supplied, a signal terminal configured to be used in order to at least output a signal, an output driver including a first output element configured to supply the first power supply potential to the signal terminal when in an ON state, and a second output element provided in a P-well electrically separated from a semiconductor substrate and configured to supply the second power supply potential to the signal terminal when in an ON state, and a switch circuit configured to selectively supply a potential to the P-well, according to at least a potential of the signal terminal.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: December 8, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Hideyuki Kakubari
  • Patent number: 10857809
    Abstract: A printer having a printer communicator for receiving commands; a thermal line head that prints in line units on thermal roll paper; a multiple line buffer; and a printer controller that controls the thermal line head to print. When the printer communicator receives an image printing command instructing image printing, the printer controller stores the image data specified by the image printing command in the multiple line buffer. When the printer communicator receives a non-image data definition command, the printer controller prints an image on the thermal roll paper by the thermal line head based on the image data stored in the multiple line buffer.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: December 8, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Yuki Yajima, Yuji Takamizawa
  • Patent number: 10861915
    Abstract: A light-emitting device includes a substrate having a circuit thereon, a first electrode electrically coupled to the circuit, a second electrode, a light-emitting layer, and a sealing layer including a planarization layer, wherein the first electrode is arranged between the substrate and the second electrode, the light-emitting layer is arranged between the first electrode and the second electrode and emits light in accordance with a current flowing through the light-emitting layer, the planarization layer is arranged on an opposite side of the second electrode from a side on which the light-emitting layer is arranged, and an outer edge of the planarization layer is located inward of an outer edge of the light-emitting layer in plan view.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: December 8, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Suguru Akagawa, Ryoichi Nozawa