Patents by Inventor Keiko Yamada

Keiko Yamada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20140152730
    Abstract: A printing apparatus that includes a head unit in which a plurality of heads are disposed so that parts of nozzle rows overlap with each other between the heads and a control unit configured to make the head unit execute a specified operation for forming flushing dots other than image formation dots on a print medium by discharging liquid through the nozzles. The control unit makes the head unit execute the specified operation in which a liquid amount discharged in the specified operation per nozzle that does not belong to an overlap area where parts of the nozzle rows overlap with each other between the heads is larger in a set movement distance thereof than a liquid amount discharged in the specified operation per nozzle that belongs to the overlap area in a set movement distance thereof, if a specified condition for execution of the specified operation is satisfied.
    Type: Application
    Filed: November 12, 2013
    Publication date: June 5, 2014
    Applicant: Seiko Epson Corporation
    Inventors: Akito Sato, Satoshi Yamazaki, Keiko Yamada, Yuko Yamamoto
  • Publication number: 20140139580
    Abstract: A liquid discharge apparatus, comprising: a transportation unit that transports a medium; a head that includes a first nozzle array on which nozzles for discharging a first liquid are arrayed, and a second nozzle array on which nozzles for discharging a second liquid are arrayed; and a controller that controls the transportation unit and the head based on print data, wherein, in a case where the printing of the print data is designated to be performed without forming the printing dots of the first liquid on the medium, the controller causes the head to discharge the second liquid from the second nozzle array to form the printing dots of the second liquid on the medium, and causes the head to discharge the first liquid from the first nozzle array to form the flushing dots of the first liquid on the medium.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 22, 2014
    Applicant: Seiko Epson Corporation
    Inventors: Akito SATO, Satoshi YAMAZAKI, Keiko YAMADA, Yuko YAMAMOTO
  • Publication number: 20140139577
    Abstract: A printing apparatus which can form an image formation dot for printing an image defined as an object to be printed on a printing medium, the printing apparatus comprising a line head which includes a nozzle array arraying a plurality of nozzles, by moving at least one of a printing medium and the head, in a direction intersecting a direction relatively changing a position of the printing medium and the head and a control unit which performs a specific operation forming a flushing dot besides the image formation dot by discharging a liquid on the line head, wherein, when a specific condition increasing viscosity of the liquid is satisfied, the control unit performs the specific operation of discharging the liquid to the printing medium and the specific operation of discharging the liquid to a place other than the printing medium.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 22, 2014
    Applicant: Seiko Epson Corporation
    Inventors: Akito Sato, Satoshi Yamazaki, Keiko Yamada, Yuko Yamamoto
  • Patent number: 8654242
    Abstract: Provided is a single-focus optical system which is configured, in order from the object side to the image side, of a first to third lens groups and in which the first lens group and the third lens group are fixed with respect to a predetermined imaging surface, and the second lens group is moved in the optical axis direction to focus, wherein the first lens group comprises at least one positive lens and at least one negative lens, the second lens group comprises at least one positive lens, the third lens group comprises at least one lens having at least one aspheric surface and having a positive optical power at a peripheral portion thereof and 5<|?v1|<70 is satisfied where ?v1 is a maximum value of the Abbe number difference between the positive lens and the negative lens in the first lens group.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: February 18, 2014
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Keiji Matsusaka, Taizo Wakimura, Masashi Isono, Eigo Sano, Keiko Yamada, Hiroaki Tanaka
  • Patent number: 8638483
    Abstract: A video image display device (1) is provided with an ocular optical system (12) that guides video image light from a display element (11) to the pupil of an observer through an ocular prism (21) and at the same time guides ambient light to the pupil of the observer through the ocular prism (21). The eyepiece optical system (12) has reflection planes set in the ocular prism (21) that are provided with three or more planes to fold down three or more times an optical path for the video image light from the display element (11), wherein an HOE (23) is formed on at least one plane of the reflection planes. The video image display device (1) satisfies a conditional equation that properly prescribes the relationship between an incident range of the video image light incident on the HOE (23) formed plane in the ocular prism (21) and a display screen size of the display element (11).
    Type: Grant
    Filed: September 12, 2009
    Date of Patent: January 28, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Keiko Yamada, Yoshie Shimizu
  • Publication number: 20140015991
    Abstract: The imaging optical system has a first positive lens element convex toward the object side, a second negative lens element concave toward the image side, a third lens element having both surfaces with a region, in which the lens section is located on the object side than the intersection with the optical axis, a fourth positive lens element convex toward the image side with at least one surface having an aspherical shape and inflection points, and a fifth negative lens element concave toward the image side. The optical system satisfies the expressions: 0.5<|f1/f|<0.67, 0.3<|f4/f|<0.63 The third lens element satisfies the expressions: ?0.4<f/R1—L3<0.2, ?0.6<f/R2—L3<0.05 where f, f1, f4 denote focal lengths of the entire system, the first lens element, and the fourth lens element, and R1_L3, R2_L3 denote paraxial diameters of the object-side surface and the image-side surface of the third lens element.
    Type: Application
    Filed: March 6, 2012
    Publication date: January 16, 2014
    Applicant: KONICA MINOLTA, INC.
    Inventors: Keiko Yamada, Maiko Nishida
  • Publication number: 20130301147
    Abstract: An imaging lens system includes, from the object side, an aperture stop, a positive first lens convex to the object side, a negative second lens, a positive third lens convex to the object side, a positive meniscus fourth lens convex to the image side, and a negative biconcave fifth lens, and fulfills the conditional formulae 0.8<f/f1<1.30, 0.5<f4/f1<0.90, 0.6<d4/d3<2.0, and 0.80<R3_1/f<2.20, where f is the focal length of the entire imaging lens system, f1 and f4 are the focal lengths of the first and fourth lenses, d3 is the axial thickness of the second lens, d4 is the axial aerial distance between the second and third lenses, and R3_1 is the radius of curvature of the object-side surface of the third lens on the optical axis.
    Type: Application
    Filed: May 14, 2013
    Publication date: November 14, 2013
    Applicant: Konica Minolta, Inc.
    Inventor: Keiko YAMADA
  • Patent number: 8542383
    Abstract: The number of signal lines needed to communicate a plurality of data types and a plurality of data status levels is reduced and the system cost thereby reduced. A first function unit 1 and a second function unit 2 of the function units in an electronic device are connected by a signal bus 3 for communicating a plurality of data types and a plurality of data status values. The first function unit 1 and second function unit 2 each have a data table of status patterns assigning status values to the data types. The first function unit 1 converts the status pattern to conversion data by referring to the data table and sends the conversion data to the second function unit 2. The second function unit 2 reconverts the received conversion data to the status pattern by referring to the data table.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: September 24, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Takahisa Komiyama, Keiko Yamada
  • Patent number: 8427761
    Abstract: An image pickup optical system OP includes first and second prisms P1, P2 for bending incident light at an almost right angle. Optical axis AX at the incident surface of first prism P1 and optical axis AX at the outgoing surface of second prism P2 are almost parallel with each other. There is a lens element forming at least one power group on the optical path between first and second prisms P1, P2, wherein a power group closest to the incident surface of second prism P2 is a positive power group. The incident surface of second prism P2 has a concaved surface shape facing the object side, and the following conditional expressions are satisfied: ?4.2<fp2/f<?0.2 (fp2: a focal length of the second prism, f: is a focal length of the entire image pickup optical system), and 0.2<|f_1p/fp2|<1.5 (f_1p: a focal length of the power group closest to the incident surface of the second prism).
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: April 23, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Keiko Yamada
  • Patent number: 8425044
    Abstract: A projection optical system receives light from a display device surface and enlarges and projects a display image thereon onto a screen surface. The projection optical system includes one or more reflective surfaces having an optical power between the display device surface and the screen surface, moves at least one optical device having an optical power to adjust focus and satisfies the following conditional formula: ?0.02<{(?1??2)?2}/{(?1+?2)?1}<0.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: April 23, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Keiko Yamada, Soh Ohzawa, Masayuki Imaoka, Kohtaro Hayashi
  • Patent number: 8159735
    Abstract: A two-dimensional image is displayed on a screen (SC) by scanning the screen (SC) two-dimensionally with light beams from a laser light source (1) that are deflected to orthogonally-intersecting first and second scanning directions by means of a mirror (10) in a deflection apparatus (3). The deflection apparatus (3) is arranged to incline obliquely in the second scanning direction (e.g. vertical direction) lower in a scanning speed than the first scanning direction (e.g. horizontal direction), and performs an oblique projection onto the screen (SC).
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: April 17, 2012
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Kenji Konno, Keiko Yamada
  • Patent number: 8113667
    Abstract: A projection optical system satisfies a conditional formula: 0.01<{(tan ?f1?tan ?f2)?(tan ?n1?tan ?n2)}·(?2/?1)<0.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: February 14, 2012
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Keiko Yamada, Kohtaro Hayashi, Soh Ohzawa, Masayuki Imaoka
  • Publication number: 20120026384
    Abstract: An image pickup optical system OP includes first and second prisms P1, P2 for bending incident light at an almost right angle. Optical axis AX at the incident surface of first prism P1 and optical axis AX at the outgoing surface of second prism P2 are almost parallel with each other. There is a lens element forming at least one power group on the optical path between first and second prisms P1, P2, wherein a power group closest to the incident surface of second prism P2 is a positive power group. The incident surface of second prism P2 has a concaved surface shape facing the object side, and the following conditional expressions are satisfied: ?4.2<fp2/f<?0.2 (fp2: a focal length of the second prism, f: is a focal length of the entire image pickup optical system), and 0.2<|f_lp/fp2|<1.5 (f_lp: a focal length of the power group closest to the incident surface of the second prism).
    Type: Application
    Filed: March 1, 2010
    Publication date: February 2, 2012
    Inventor: Keiko Yamada
  • Publication number: 20110273611
    Abstract: Provided is a single-focus optical system which is configured, in order from the object side to the image side, of a first to third lens groups and in which the first lens group and the third lens group are fixed with respect to a predetermined imaging surface, and the second lens group is moved in the optical axis direction to focus, wherein the first lens group comprises at least one positive lens and at least one negative lens, the second lens group comprises at least one positive lens, the third lens group comprises at least one lens having at least one aspheric surface and having a positive optical power at a peripheral portion thereof, and 5<|?v1|<70 is satisfied where ?v1 is a maximum value of the Abbe number difference between the positive lens and the negative lens in the first lens group.
    Type: Application
    Filed: August 25, 2010
    Publication date: November 10, 2011
    Applicant: Konica Minolta Opto, Inc
    Inventors: Keiji Matsusaka, Taizo Wakimura, Masashi Isono, Eigo Sano, Keiko Yamada, Hiroaki Tanaka
  • Patent number: 8052283
    Abstract: An oblique projection optical system enlarges an image formed on a display device surface, and obliquely projects the enlarged image on a screen surface. The oblique projection optical system has, in the order from a reduction side: a refraction optical portion having a positive optical power, a concave reflection surface having a positive optical power, and a convex reflection surface having a negative optical power. The refraction optical portion includes a rotationally symmetric coaxial refraction group. An intermediate image of the image formed on the display device surface is formed between the refraction optical portion and the concave reflection surface. An aperture stop image is formed between the concave reflection surface and the convex reflection surface. The concave reflection surface and the convex reflection surface fulfill prescribed conditional formulae.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: November 8, 2011
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Masayuki Imaoka, Keiko Yamada
  • Publication number: 20110212233
    Abstract: This invention provides an acid-resistant malt extract useful to add a clear or transparent color to acidic food and beverage having a pH value of not less than 2 and less than 4.6, without generating suspended or sedimented insoluble matter; and a manufacturing method therefor. The malt extract of the present invention is obtained by adjusting the particle diameter of insoluble particles contained in the malt extract to less than 0.9 ?m by way of, for example, filtering an untreated liquid malt extract or a treated liquid thereof using a filter having a pore diameter of 0.9 ?m or less.
    Type: Application
    Filed: November 17, 2009
    Publication date: September 1, 2011
    Applicant: SAN-EI GEN F.F.I., INC.
    Inventors: Yutaka Higashimura, Kenta Kurihara, Keiko Yamada, Chika Maeda
  • Publication number: 20110175799
    Abstract: A video image display device (1) is provided with an ocular optical system (12) that guides video image light from a display element (11) to the pupil of an observer through an ocular prism (21) and at the same time guides ambient light to the pupil of the observer through the ocular prism (21). The eyepiece optical system (12) has reflection planes set in the ocular prism (21) that are provided with three or more planes to fold down three or more times an optical path for the video image light from the display element (11), wherein an HOE (23) is formed on at least one plane of the reflection planes. The video image display device (1) satisfies a conditional equation that properly prescribes the relationship between an incident range of the video image light incident on the HOE (23) formed plane in the ocular prism (21) and a display screen size of the display element (11).
    Type: Application
    Filed: September 12, 2009
    Publication date: July 21, 2011
    Applicant: Konica Minolta Holdings, Inc.
    Inventors: Keiko Yamada, Yoshie Shimizu
  • Publication number: 20110134499
    Abstract: A two-dimensional image is displayed on a screen (SC) by scanning the screen (SC) two-dimensionally with light beams from a laser light source (1) that are deflected to orthogonally-intersecting first and second scanning directions by means of a mirror (10) in a deflection apparatus (3). The deflection apparatus (3) is arranged to incline obliquely in the second scanning direction (e.g. vertical direction) lower in a scanning speed than the first scanning direction (e.g. horizontal direction), and performs an oblique projection onto the screen (SC).
    Type: Application
    Filed: August 19, 2009
    Publication date: June 9, 2011
    Applicant: Konica Minolta Opto, Inc.
    Inventors: Kenji Konno, Keiko Yamada
  • Patent number: 7880948
    Abstract: Scanning projection device PJ two-dimensionally deflects a beam emitted from light source unit 1 and performs scanning with deflection element 3, and projects the beam obliquely on screen SC with projection optical system 7. By defining a range of an incident angle to screen SC properly, projection optical system 7 does not disturb an observation of images, and a correction of a spot shape does not become difficult. Further, by defining a ratio of scan-angle magnifications between in the vertical direction and the horizontal direction properly, difference in resolution between in the vertical direction and the horizontal direction can be reduced, and a high-quality and excellent image can be displayed, even when a beam obliquely projected.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: February 1, 2011
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Keiko Yamada
  • Publication number: 20100253991
    Abstract: Scanning projection device PJ two-dimensionally deflects a beam emitted from light source unit 1 and performs scanning with deflection element 3, and projects the beam obliquely on screen SC with projection optical system 7. By defining a range of an incident angle to screen SC properly, projection optical system 7 does not disturb an observation of images, and a correction of a spot shape does not become difficult. Further, by defining a ratio of scan-angle magnifications between in the vertical direction and the horizontal direction properly, difference in resolution between in the vertical direction and the horizontal direction can be reduced, and a high-quality and excellent image can be displayed, even when a beam obliquely projected.
    Type: Application
    Filed: September 18, 2008
    Publication date: October 7, 2010
    Applicant: Konica Minolta Opto, Inc.
    Inventor: Keiko Yamada