Patents by Inventor Mitsuru Shingyohuchi
Mitsuru Shingyohuchi 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: 8556396Abstract: An inkjet head is disclosed, including a nozzle plate, a passage substrate, and a diaphragm. The nozzle plate forms multiple nozzles for discharging ink. A passage substrate joints to the nozzle plate. On the passage substrate, an individual liquid chamber leading to a nozzle, and a liquid supply chamber connected to the individual liquid chamber through an individual passage are formed for each of the multiple nozzles. The diaphragm forms a piezoelectric element which is laminated on a side opposite to the nozzle plate of the passage substrate and includes a lower electrode, a piezoelectric body, and an upper electrode. The liquid supply chamber formed for each of the multiple nozzles is compartmented by a bulkhead from an other liquid supply chamber, and each of the liquid supply chamber and the other liquid supply chamber include multiple ink supply ports.Type: GrantFiled: June 12, 2012Date of Patent: October 15, 2013Assignee: Ricoh Company, Ltd.Inventors: Masaki Kato, Kiyoshi Yamaguchi, Mitsuru Shingyohuchi
-
Patent number: 8491103Abstract: Disclosed is an inkjet head including a channel substrate; a multi-interconnect structure formed on the channel substrate, including a vibration layer, plural piezoelectric elements each including a first electrode, a piezoelectric layer and a second electrode, and a common electrode interconnect electrically connected to the first electrode including a first common electrode interconnect and a second common electrode interconnect which has a thickness thicker than that of the first common electrode interconnect; and a support substrate bonded to the channel substrate through the multi-interconnect structure, the support substrate being provided with a first concave portion at a surface facing the channel substrate at an area corresponding to the second common electrode interconnect to accommodate the second common electrode interconnect.Type: GrantFiled: February 7, 2012Date of Patent: July 23, 2013Assignee: Ricoh Company, Ltd.Inventors: Masaki Kato, Kiyoshi Yamaguchi, Mitsuru Shingyohuchi
-
Publication number: 20120320131Abstract: An inkjet head is disclosed, including a nozzle plate, a passage substrate, and a diaphragm. The nozzle plate forms multiple nozzles for discharging ink. A passage substrate joints to the nozzle plate. On the passage substrate, an individual liquid chamber leading to a nozzle, and a liquid supply chamber connected to the individual liquid chamber through an individual passage are formed for each of the multiple nozzles. The diaphragm forms a piezoelectric element which is laminated on a side opposite to the nozzle plate of the passage substrate and includes a lower electrode, a piezoelectric body, and an upper electrode. The liquid supply chamber formed for each of the multiple nozzles is compartmented by a bulkhead from an other liquid supply chamber, and each of the liquid supply chamber and the other liquid supply chamber include multiple ink supply ports.Type: ApplicationFiled: June 12, 2012Publication date: December 20, 2012Applicant: RICOH COMPANY, LTD.Inventors: Masaki Kato, Kiyoshi Yamaguchi, Mitsuru Shingyohuchi
-
Publication number: 20120206540Abstract: Disclosed is an inkjet head including a channel substrate; a multi-interconnect structure formed on the channel substrate, including a vibration layer, plural piezoelectric elements each including a first electrode, a piezoelectric layer and a second electrode, and a common electrode interconnect electrically connected to the first electrode including a first common electrode interconnect and a second common electrode interconnect which has a thickness thicker than that of the first common electrode interconnect; and a support substrate bonded to the channel substrate through the multi-interconnect structure, the support substrate being provided with a first concave portion at a surface facing the channel substrate at an area corresponding to the second common electrode interconnect to accommodate the second common electrode interconnect.Type: ApplicationFiled: February 7, 2012Publication date: August 16, 2012Applicant: RICOH COMPANY, LTD.Inventors: Masaki Kato, Kiyoshi Yamaguchi, Mitsuru Shingyohuchi
-
Patent number: 8057001Abstract: An imaging apparatus is provided that includes a liquid discharge head configured to discharge recording liquid as one or more recording liquid droplets; a drive waveform generating unit configured to generate a drive waveform including at least two drive signals within one printing period; a drive unit configured to input tone data, select a relevant drive signal from the drive waveform via a switch that switches on/off according to the tone data, and apply the selected drive signal to the liquid discharge head; and a transmitting unit configured to transmit the tone data to the drive unit plural times within one printing period, the tone data being configured at a plurality of bits per channel.Type: GrantFiled: March 2, 2006Date of Patent: November 15, 2011Assignee: Ricoh Company, Ltd.Inventors: Mitsuru Shingyohuchi, Takashi Kimura, Hirotoshi Eguchi, Kunihiro Yamanaka, Takahiro Yoshida, Toshihito Kamei
-
Patent number: 7810909Abstract: A liquid drop jet apparatus is provided which includes a plurality of nozzles to jet out a liquid droplet, a liquid room corresponding to the nozzles, a liquid supply path to supply a liquid into the liquid room, a vibration board to apply a pressure to the liquid in the liquid room, and an electromechanical converter to vibrate the vibration board. The vibration board has a thin region corresponding to a wall of the liquid room and a thicker region thicker than the thin region. A longitudinal length of the thin region is longer than a longitudinal length of the liquid room, and the thicker region includes an end corresponding to a side of the liquid supply path.Type: GrantFiled: November 24, 2006Date of Patent: October 12, 2010Assignee: Ricoh Company, Ltd.Inventor: Mitsuru Shingyohuchi
-
Patent number: 7794034Abstract: An image formation apparatus is disclosed, wherein a time interval between a first ink drop and a second ink drop is set at 1.5×Tc, a time interval between the second ink drop and a third ink drop is set at 1.5×Tc, and a time interval between the third ink drop and a fourth ink drop is set at 2×Tc, where Tc represents the specific vibration cycle of a pressurized ink chamber.Type: GrantFiled: June 21, 2004Date of Patent: September 14, 2010Assignee: Ricoh Company, Ltd.Inventors: Mitsuru Shingyohuchi, Mikio Ohashi, Hiroshi Noda
-
Publication number: 20070211092Abstract: An imaging apparatus is provided that includes a liquid discharge head configured to discharge recording liquid as one or more recording liquid droplets; a drive waveform generating unit configured to generate a drive waveform including at least two drive signals within one printing period; a drive unit configured to input tone data, select a relevant drive signal from the drive waveform via a switch that switches on/off according to the tone data, and apply the selected drive signal to the liquid discharge head; and a transmitting unit configured to transmit the tone data to the drive unit plural times within one printing period, the tone data being configured at a plurality of bits per channel.Type: ApplicationFiled: March 2, 2006Publication date: September 13, 2007Inventors: Mitsuru Shingyohuchi, Takashi Kimura, Hirotoshi Eguchi, Kunihiro Yamanaka, Takahiro Yoshida, Toshihito Kamei
-
Patent number: 7249816Abstract: A head driving control apparatus for driving a pressure generation part in a droplet discharging head outputs a driving signal including: a first waveform element for contracting the volume of a pressurizing chamber without discharging a droplet; a second waveform element for keeping a contracted state until a meniscus in a nozzle moves toward the pressurizing chamber; a third waveform element for expanding the volume of the pressurizing chamber from the contracted state; a fourth waveform element for keeping an expanded state; and a fifth waveform element for contracting the volume of the pressurizing chamber to discharge a droplet.Type: GrantFiled: September 19, 2002Date of Patent: July 31, 2007Assignee: Ricoh Company, Ltd.Inventors: Masanori Kusunoki, Mitsuru Shingyohuchi
-
Publication number: 20070126802Abstract: A liquid drop jet apparatus is provided which includes a plurality of nozzles to jet out a liquid droplet, a liquid room corresponding to the nozzles, a liquid supply path to supply a liquid into the liquid room, a vibration board to apply a pressure to the liquid in the liquid room, and an electromechanical converter to vibrate the vibration board. The vibration board has a thin region corresponding to a wall of the liquid room and a thicker region thicker than the thin region. A longitudinal length of the thin region is longer than a longitudinal length of the liquid room, and the thicker region includes an end corresponding to a side of the liquid supply path.Type: ApplicationFiled: November 24, 2006Publication date: June 7, 2007Inventor: Mitsuru Shingyohuchi
-
Publication number: 20070097163Abstract: An image formation apparatus is disclosed, wherein a time interval between a first ink drop and a second ink drop is set at 1.5×Tc, a time interval between the second ink drop and a third ink drop is set at 1.5×Tc, and a time interval between the third ink drop and a fourth ink drop is set at 2×Tc, where Tc represents the specific vibration cycle of a pressurized ink chamber.Type: ApplicationFiled: June 21, 2004Publication date: May 3, 2007Applicant: RICOH COMPANY, LTD.Inventors: Mitsuru Shingyohuchi, Mikio Ohashi, Hiroshi Noda
-
Patent number: 6811238Abstract: An ink jet recording apparatus includes an ink jet head having a nozzle, an ink channel, a diaphragm, and an electrode and a part applying first and second driving signals to the ink jet head. The first driving signal generates electrostatic force that deforms the diaphragm so as to eject an ink droplet from the nozzle. The second driving signal for controlling deformation of the diaphragm is applied after a predetermined period of time passes since application of the first driving signal.Type: GrantFiled: September 7, 2001Date of Patent: November 2, 2004Assignee: Ricoh Company, Ltd.Inventor: Mitsuru Shingyohuchi
-
Publication number: 20040207671Abstract: A head driving control apparatus for driving a pressure generation part in a droplet discharging head outputs a driving signal including: a first waveform element for contracting the volume of a pressurizing chamber without discharging a droplet; a second waveform element for keeping a contracted state until a meniscus in a nozzle moves toward the pressurizing chamber; a third waveform element for expanding the volume of the pressurizing chamber from the contracted state; a fourth waveform element for keeping an expanded state; and a fifth waveform element for contracting the volume of the pressurizing chamber to discharge a droplet.Type: ApplicationFiled: February 20, 2004Publication date: October 21, 2004Inventors: Masanori Kusunoki, Mitsuru Shingyohuchi
-
Patent number: 6729716Abstract: A liquid drop jet head includes a nozzle, a liquid room, a vibration board forming a wall surface of the liquid room, driving element, a support substrate to which an end part of the driving element is connected without connecting to the vibration board, and a gap between the support substrate and the vibration board at a position corresponding to a partition of the liquid room, wherein the vibration board includes a thin part and a thick part and the area of the thin part is divided by the thick part with which the driving element comes in contact.Type: GrantFiled: July 9, 2002Date of Patent: May 4, 2004Assignee: Ricoh Company, Ltd.Inventors: Hirotoshi Eguchi, Shuzo Matsumoto, Kenichi Ogata, Kiyoshi Yamaguchi, Takayuki Hiyoshi, Mitsuru Shingyohuchi, Masanori Kusunoki
-
Publication number: 20030067513Abstract: A liquid drop jet head includes a nozzle, a liquid room, a vibration board forming a wall surface of the liquid room, driving means, a support substrate to which an end part of the driving means is connected without connecting to the vibration board, and a gap between the support substrate and the vibration board at a position corresponding to a partition of the liquid room, wherein the vibration board comprises a thin part and a thick part and the area of the thin part is divided by the thick part with which the driving means comes in contact.Type: ApplicationFiled: July 9, 2002Publication date: April 10, 2003Applicant: Ricoh Company, Ltd.Inventors: Hirotoshi Eguchi, Shuzo Matsumoto, Kenichi Ogata, Kiyoshi Yamaguchi, Takayuki Hiyoshi, Mitsuru Shingyohuchi, Masanori Kusunoki
-
Publication number: 20020036667Abstract: An ink jet recording apparatus includes an ink jet head having a nozzle, an ink channel, a diaphragm, and an electrode and a part applying first and second driving signals to the ink jet head. The first driving signal generates electrostatic force that deforms the diaphragm so as to eject an ink droplet from the nozzle. The second driving signal for controlling deformation of the diaphragm is applied after a predetermined period of time passes since application of the first driving signal.Type: ApplicationFiled: September 7, 2001Publication date: March 28, 2002Applicant: Ricoh Company, LtdInventor: Mitsuru Shingyohuchi