Patents by Inventor Chika Inoue
Chika Inoue 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).
-
Patent number: 8137886Abstract: A magnetic carrier is provided which uses a toner having high coloring power and enables development to be performed at low electric field intensity and can form high quality images while keeping gradation characteristics. The magnetic carrier includes magnetic carrier particles including at least porous magnetic core particles and a resin. The electric field intensity just before the break-down of the magnetic carrier is 1,300 V/cm or more and 5,000 V/cm or less.Type: GrantFiled: January 21, 2010Date of Patent: March 20, 2012Assignee: Canon Kabushiki KaishaInventors: Yoshinobu Baba, Koh Ishigami, Tomoko Endo, Hiroyuki Fujikawa, Kunihiko Nakamura, Nozomu Komatsu, Chika Inoue, Takayuki Itakura
-
Patent number: 7939233Abstract: A magnetic carrier and a two-component developer are provided which have remedied blank areas, fog after leaving, carrier sticking during running, and image density variations before and after running. The magnetic carrier has magnetic carrier particles having at least porous magnetic core particles and a resin. The magnetic carrier particles satisfying the specific conditions (a), (b) and (c) where, in a reflected electron image of cross sections of the magnetic carrier particles as photographed with a scanning electron microscope, straight lines that divide a cross section of a magnetic carrier particle into 72 at intervals of 5° are drawn from a reference point of the cross section thereof toward the surface of the magnetic carrier particle; the magnetic carrier particles being contained in an amount of 60% by number or more.Type: GrantFiled: January 21, 2010Date of Patent: May 10, 2011Assignee: Canon Kabushiki KaishaInventors: Chika Inoue, Hiroyuki Fujikawa, Koh Ishigami, Kunihiko Nakamura, Nozomu Komatsu, Tomoko Endo, Yoshinobu Baba, Takayuki Itakura
-
Patent number: 7927775Abstract: Provided is a magnetic carrier giving a high quality image free of density variation without the occurrence of fogging or carrier adhesion and having excellent dot reproducibility even during long-term use. The magnetic carrier has magnetic carrier particles produced by filling pores of porous magnetic core particles with a resin. The magnetic carrier contains 80% by number or more of the magnetic carrier particles satisfying the specific conditions (a) and (b) when 18 straight lines passing through a reference point of a cross section of the magnetic carrier particle are drawn at intervals of 10° in a reflected electron image of the cross section of the magnetic carrier particle photographed by a scanning electron microscope.Type: GrantFiled: January 21, 2010Date of Patent: April 19, 2011Assignee: Canon Kabushiki KaishaInventors: Nozomu Komatsu, Koh Ishigami, Hiroyuki Fujikawa, Kunihiko Nakamura, Chika Inoue, Yoshinobu Baba, Takayuki Itakura, Tomoko Endo
-
Patent number: 7858283Abstract: A magnetic carrier which has magnetic carrier particles each having at least porous magnetic core particles and a resin, in which, in a backscattered electron image of the magnetic carrier particles, photographed with a scanning electron microscope as taken at an accelerating voltage of 2.0 kV, magnetic carrier particles having area proportion S1 found from a specific expression (1) of from 0.5 area % or more to 8.0 area % or less are in a proportion of 8.0% by number or more in the magnetic carrier, an average proportion Av1 of the total area of portions having a high luminance which come from a metal oxide on the magnetic carrier particles to the total projected area of the magnetic carrier particles is from 0.5 area % or more to 8.0 area % or less, and an average proportion Av2 found from a specific expression (2) is 10.0 area % or less.Type: GrantFiled: January 21, 2010Date of Patent: December 28, 2010Assignee: Canon Kabushiki KaishaInventors: Koh Ishigami, Hiroyuki Fujikawa, Kunihiko Nakamura, Nozomu Komatsu, Chika Inoue, Tomoko Endo, Yoshinobu Baba, Takayuki Itakura
-
Publication number: 20100143833Abstract: A magnetic carrier is provided which uses a toner having high coloring power and enables development to be performed at low electric field intensity and can form high quality images while keeping gradation characteristics. The magnetic carrier includes magnetic carrier particles including at least porous magnetic core particles and a resin. The electric field intensity just before the break-down of the magnetic carrier is 1,300 V/cm or more and 5,000 V/cm or less.Type: ApplicationFiled: January 21, 2010Publication date: June 10, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Yoshinobu Baba, Koh Ishigami, Tomoko Endo, Hiroyuki Fujikawa, Kunihiko Nakamura, Nozomu Komatsu, Chika Inoue, Takayuki Itakura
-
Publication number: 20100136473Abstract: A magnetic carrier which has magnetic carrier particles each having at least porous magnetic core particles and a resin, in which, in a backscattered electron image of the magnetic carrier particles, photographed with a scanning electron microscope as taken at an accelerating voltage of 2.0 kV, magnetic carrier particles having area proportion S1 found from a specific expression (1) of from 0.5 area % or more to 8.0 area % or less are in a proportion of 80% by number or more in the magnetic carrier, an average proportion Av1 of the total area of portions having a high luminance which come from a metal oxide on the magnetic carrier particles to the total projected area of the magnetic carrier particles is from 0.5 area % or more to 8.0 area % or less, and an average proportion Av2 found from a specific expression (2) is 10.0 area % or less.Type: ApplicationFiled: January 21, 2010Publication date: June 3, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Koh Ishigami, Hiroyuki Fujikawa, Kunihiko Nakamura, Nozomu Komatsu, Chika Inoue, Tomoko Endo, Yoshinobu Baba, Takayuki Itakura
-
Publication number: 20100136558Abstract: It is intended to clarify the CD20 amino acid sequence and its gene sequence which are essentially required in constructing an anti-CD20 antibody useful in treating animal malignant lymphoma. It is also intended to provide a method of diagnosing canine malignant lymphoma by using the CD20 gene sequence. Using monocytes in canine blood as a sample, mRNA is obtained and the full base sequence of canine CD20 gene (SEQ ID NO:2) is determined. Based on this sequence, its amino acid sequence (SEQ ID NO:1) is determined. Comparing the homologies with human and mouse CD20 genes and amino acid sequences, it is identified as canine CD20 gene. Moreover, a primer specific to the canine CD20 gene is constructed and the expression of the CD20 gene in a sample is examined, thereby giving a method of diagnosing canine B lymphocyte-origin malignant lymphoma.Type: ApplicationFiled: November 12, 2009Publication date: June 3, 2010Applicant: NIHON UNIVERSITYInventors: Rui KANO, Atsuhiko HASEGAWA, Chika INOUE
-
Publication number: 20100119968Abstract: Provided is a magnetic carrier giving a high quality image free of density variation without the occurrence of fogging or carrier adhesion and having excellent dot reproducibility even during long-term use. The magnetic carrier has magnetic carrier particles produced by filling pores of porous magnetic core particles with a resin. The magnetic carrier contains 80% by number or more of the magnetic carrier particles satisfying the specific conditions (a) and (b) when 18 straight lines passing through a reference point of a cross section of the magnetic carrier particle are drawn at intervals of 10° in a reflected electron image of the cross section of the magnetic carrier particle photographed by a scanning electron microscope.Type: ApplicationFiled: January 21, 2010Publication date: May 13, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Nozomu Komatsu, Koh Ishigami, Hiroyuki Fujikawa, Kunihiko Nakamura, Chika Inoue, Yoshinobu Baba, Takayuki Itakura, Tomoko Endo
-
Publication number: 20100119967Abstract: A magnetic carrier and a two-component developer are provided which have remedied blank areas, fog after leaving, carrier sticking during running, and image density variations before and after running. The magnetic carrier has magnetic carrier particles having at least porous magnetic core particles and a resin. The magnetic carrier particles satisfying the specific conditions (a), (b) and (c) where, in a reflected electron image of cross sections of the magnetic carrier particles as photographed with a scanning electron microscope, straight lines that divide a cross section of a magnetic carrier particle into 72 at intervals of 5° are drawn from a reference point of the cross section thereof toward the surface of the magnetic carrier particle; the magnetic carrier particles being contained in an amount of 60% by number or more.Type: ApplicationFiled: January 21, 2010Publication date: May 13, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Chika Inoue, Hiroyuki Fujikawa, Koh Ishigami, Kunihiko Nakamura, Nozomu Komatsu, Tomoko Endo, Yoshinobu Baba, Takayuki Itakura
-
Publication number: 20100028796Abstract: A magnetic carrier and two-component developer are provided alleviating coarse images, fogging when printing is done after a copier body is left standing for one week in a high temperature and high humidity environment and carrier adhesion after extensive operation in a low image ratio. The magnetic carrier includes magnetic carrier particles including porous magnetic core particles and a resin, wherein in a mercury intrusion method applied to the porous magnetic core particles, a pore diameter in which a differential pore volume in the specific pore diameter range becomes maximum is in a specific range, and when the maximum value of a differential pore volume in the specific pore diameter range is defined as P1 and the maximum value of a differential pore volume in the specific pore diameter range is defined as P2, P1 is in a specific range and the ratio P2/P1 is in a specific range.Type: ApplicationFiled: August 4, 2009Publication date: February 4, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Kunihiko Nakamura, Hiroyuki Fujikawa, Koh Ishigami, Nozomu Komatsu, Chika Inoue, Tomoko Endo, Yoshinobu Baba, Takayuki Itakura
-
Publication number: 20080299546Abstract: It is intended to clarify the CD20 amino acid sequence and its gene sequence which are essentially required in constructing an anti-CD20 antibody useful in treating animal malignant lymphoma. It is also intended to provide a method of diagnosing canine malignant lymphoma by using the gene sequence. Using monocytes in canine blood as a sample, mRNA is obtained and the full base sequence of canine CD20 gene (SEQ ID NO:2) is determined. Based on this sequence, its amino acid sequence (SEQ ID NO:1) is determined. Comparing the homologies with human and mouse CD20 genes and amino acid sequences, it is identified as canine CD20 gene. Moreover, a primer specific to the canine gene is constructed and the expression of the CD20 gene in a sample is examined, thereby giving a method of diagnosing canine B lymphocyte-origin malignant lymphoma.Type: ApplicationFiled: February 9, 2005Publication date: December 4, 2008Applicant: NIHON UNIVERSITYInventors: Rui Kano, Atsuhiko Hasegawa, Chika Inoue