Patents by Inventor Seiichi Miyahara

Seiichi Miyahara 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: 6945167
    Abstract: A screen printing apparatus and method in that in the print parameter setting process for setting print parameters including a squeegee movement speed, a printing pressure, and plate release conditions, a squeegee movement speed at which the squeegee is to be moved is set at the first step, then a printing pressure for realizing a desired cream solder charging state is set at the second step, and then plate release conditions for realizing a desired cream solder transfer state is set at the third step. Therefore, the print parameter setting process can be performed according to an efficient processing procedure and trial-and-error-based backward work can be avoided. Print parameters can be set quickly and properly for a wide range of solder types.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: September 20, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Maeda, Tetsuya Tanaka, Yuji Otake, Seiichi Miyahara
  • Patent number: 6907824
    Abstract: A screen printing apparatus prints cream solder through a pattern hole of a mask plate, to which a substrate is brought into contact, by sliding a squeegee head. A three dimensional detector, such as a laser, is used to determine the extent to which the pattern hole is filled with the cream solder. Based on the determination result, the printing operation is modified, with respect to the positioning of the mask plate and substrate, to maintain the printing quality.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: June 21, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kimiyuki Yamasaki, Michinori Tomomatsu, Seikoh Abe, Seiichi Miyahara
  • Patent number: 6868780
    Abstract: In a screen printing method of bringing a mask plate into contact with a substrate to print solder cream through a pattern hole on the substrate, a plate separating operation of separating the substrate from the mask plate after a squeegeeing step in which the solder cream is filled into the pattern hole comprises an operation pattern in which acceleration and deceleration pattern in which a descending speed is accelerated up to an upper limit speed and thereafter decelerated up to a lower limit speed is repeated plural times. Further, an initial upper limit speed in start of the plate separating operation is set higher than the succeeding upper limit speeds, whereby viscosity of the solder cream into the pattern hole in start of the plate separating operation is lowered, and the mask plate can be separated with a high accuracy throughout the entire range of the substrate.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: March 22, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuji Otake, Seiichi Miyahara, Akira Maeda, Masayuki Mantani
  • Publication number: 20050022733
    Abstract: In a screen printing apparatus which prints solder cream on a substrate by a closed type squeeze head, in print space 35 that houses the solder cream 5 pressurized in a paste storing part and brings the solder cream 5 into contact with a surface of a mask plate, a hollow heat regulating member 37 provided in a horizontal direction orthogonal to a squeezing direction is caused to pass, and a heat regulating medium is circulated inside the heat regulating member 37 by a heat regulator 40, whereby the solder cream 5 in the print space 35 can be always kept at an appropriate temperature and at an appropriate viscosity, so that print quality can be secured.
    Type: Application
    Filed: July 26, 2004
    Publication date: February 3, 2005
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiichi Miyahara, Tetsuya Tanaka, Yuji Ootake, Tamotsu Sakai, Masayuki Mantani
  • Publication number: 20040237813
    Abstract: A screen printing apparatus and method in that in the print parameter setting process for setting print parameters including a squeegee movement speed, a printing pressure, and plate release conditions, a squeegee movement speed at which the squeegee is to be moved is set at the first step, then a printing pressure for realizing a desired cream solder charging state is set at the second step, and then plate release conditions for realizing a desired cream solder transfer state is set at the third step. Therefore, the print parameter setting process can be performed according to an efficient processing procedure and trial-and-error-based backward work can be avoided. Print parameters can be set quickly and properly for a wide range of solder types.
    Type: Application
    Filed: May 20, 2004
    Publication date: December 2, 2004
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Akira Maeda, Tetsuya Tanaka, Yuji Otake, Seiichi Miyahara
  • Patent number: 6820545
    Abstract: In a screen-printing apparatus for printing creamy solder paste on a substrate by attaching a screen mask to the substrate, a predetermined measuring position of the mechanisms in the screen-printing apparatus is measured three-dimensionally by a three-dimensional measuring device. Based on the measured result, a predetermined measuring point on an object to be measured is determined on a position relative to the origin of the mechanical coordinate system in the screen-printing apparatus, and the origin position on a control program can be set. As a result, machine adjusting operation and teaching operation in the screen-printing apparatus can be simplified with high accuracy.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: November 23, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kimiyuki Yamasaki, Michinori Tomomatsu, Seikoh Abe, Seiichi Miyahara, Yuji Otake, Takahiro Fukagawa, Kunihiko Tokita, Masayuki Mantani, Minoru Murakami
  • Patent number: 6820544
    Abstract: Cream solder stored in a squeegee head is pressurized by a pressurizing plate, and the squeegee head is slid on a mask plate, so that the cream solder is printed onto a substrate via pattern apertures. This is done by a screen printing apparatus, in which pressurized solder is accommodated, and the solder is brought into contact with a surface of the mask plate via an opening formed on a lower face of the cell. A rectifier is disposed in the cell for blocking the cream solder from flowing into a specific area just above the opening. This structure allows the solder to flow into the opening in a slant direction, and causes the solder to roll. This mechanism prevents the solder from being hardened due to staying stagnant just above the opening, and thus prevents defective printings.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: November 23, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiichi Miyahara, Kimiyuki Yamasaki, Takahiro Fukagawa, Kunihiko Tokita
  • Publication number: 20040149151
    Abstract: A screen-printing apparatus for printing creamy solder paste on a substrate by attaching a screen mask to the substrate. A laser-measuring device mounted in the apparatus measures the top surface of the screen mask at a printing position and the top of the substrate at a substrate-measurement position by three-dimensional measurement, and detects a shape of the substrate or the screen mask, and determines whether or not they are acceptable. After screen printing is completed, the substrate and the screen mask undergo a printing inspection where their shapes are inspected. This provides not only inspection data of the printing results but also data for identifying the causes of print failures. As a result, the screen-printing apparatus, which has high-printing accuracy and can prevent printing failures from occurring, is provided.
    Type: Application
    Filed: January 20, 2004
    Publication date: August 5, 2004
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kimiyuki Yamasaki, Michinori Tomomatsu, Seikoh Abe, Seiichi Miyahara, Yuji Otake, Takahiro Fukagawa, Kunihiko Tokita, Masayuki Mantani, Minoru Murakami
  • Publication number: 20040139869
    Abstract: Cream solder stored in a squeegee head is pressurized by a pressurizing plate, and the squeegee head is slid on a mask plate, so that the cream solder is printed onto a substrate via pattern apertures. This is done by a screen printing apparatus, in which pressurized solder is accommodated, and the solder is brought into contact with a surface of the mask plate via an opening formed on a lower face of the cell. A rectifier is disposed in the cell for blocking the cream solder from flowing into a specific area just above the opening. This structure allows the solder to flow into the opening in a slant direction, and causes the solder to roll. This mechanism prevents the solder from being hardened due to staying stagnant just above the opening, and thus prevents defective printings.
    Type: Application
    Filed: January 12, 2004
    Publication date: July 22, 2004
    Inventors: Seiichi Miyahara, Kimiyuki Yamasaki, Takahiro Fukagawa, Kunihiko Tokita
  • Patent number: 6755127
    Abstract: It is possible to obtain a screen printing method that may assure excellent printing qualities since the screen printing method of the present invention includes: (A) sliding a squeegee head with paste stored in the squeegee head on a mask plate, while the past is pressurized, and printing the paste on a substrate through pattern holes of the mask plate, (B) at least one step of (b) separating the squeegee head with the paste stored therein from the mask plate, and (e) sliding the squeegee head on the mask plate for a pre-squeezing purpose before the step (A). The step of separating the squeegee head from the mask plate includes the steps of (1) discontinuing the pressure application to the paste stored in the squeegee head, (2) horizontally moving the squeegee head by a predetermined distance while the bottom end portion of the squeegee head is abutted on the mask plate in a state of the pressure application being discontinued, and (3) moving the squeegee head upward off from the mask plate.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: June 29, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiichi Miyahara, Takahiro Fukagawa, Minoru Murakami, Michinori Tomomatsu, Seiko Abe, Kimiyuki Yamasaki, Kunihiko Tokita
  • Publication number: 20040079244
    Abstract: A screen printing apparatus prints cream solder through a pattern hole of a mask plate, to which a substrate is brought into contact, by sliding a squeegee head. The mask plate, to which the substrate is positioned, is three-dimensionally measured from its above, thereby detecting a positioned status. Based on the detection result, the positioned status is corrected by driving a substrate-positioning-section. As a result, the substrate is always exactly positioned to the mask plate, and quality print is thus maintainable.
    Type: Application
    Filed: June 20, 2003
    Publication date: April 29, 2004
    Inventors: Kimiyuki Yamasaki, Michinori Tomomatsu, Seikoh Abe, Seiichi Miyahara
  • Patent number: 6715415
    Abstract: A screen printing method and apparatus are capable of maintaining a constant attack angle between a squeegee and a mask plate, regardless of the surface condition of the mask plate. A squeegee head, including a pair of squeegees, is rotatably supported by a retainer with respect to a horizontal axis that is at a right angle to a squeegeeing direction. The rotatably supported squeegee head is pushed by a cylinder against the mask plate. Accordingly, the attack angle is kept constant to improve the printing quality even if a substrate has a curved portion.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: April 6, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kimiyuki Yamasaki, Seiko Abe, Seiichi Miyahara, Michinori Tomomatsu
  • Patent number: 6715413
    Abstract: A screen-printing apparatus for printing creamy solder paste on a substrate by attaching a screen mask to the substrate. A laser-measuring device mounted in the apparatus measures the top surface of the screen mask at a printing position and the top of the substrate at a substrate-measurement position by three-dimensional measurement, and detects a shape of the substrate or the screen mask, and determines whether or not they are acceptable. After screen printing is completed, the substrate and the screen mask undergo a printing inspection where their shapes are inspected. This provides not only inspection data of the printing results but also data for identifying the causes of print failures. As a result, the screen-printing apparatus, which has high-printing accuracy and can prevent printing failures from occurring, is provided.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: April 6, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kimiyuki Yamasaki, Michinori Tomomatsu, Seikoh Abe, Seiichi Miyahara, Yuji Otake, Takahiro Fukagawa, Kunihiko Tokita, Masayuki Mantani, Minoru Murakami
  • Patent number: 6711999
    Abstract: A screen printing apparatus in which a squeegee head 13 is moved on a mask plate 12 thereby to print paste on a substrate through pattern holes 12a, slide contact portions 37A and 37B form respectively front and rear walls in the squeegeeing direction of a printing space 35 which reserves cream solder 5 therein and makes the cream solder contact with the surface of the mask plate 12 through an opening portion formed at the lower surface thereof. Each of the slide-contact portions is configured by a partition plate 39 for partitioning between the printing space 35 and the outside and a filling block 38 having a filling surface 38a which forms an acute angle with respect to the surface of the mask plate 12. In the squeegeeing operation, the filling surface 38a rolls the cream solder 5. Thus, the cream solder 5 can be filled into the pattern holes 12a without pressurizing the cream solder, and a problem caused by the leakage of the cream solder can be eliminated.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: March 30, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiko Abe, Seiichi Miyahara, Yuji Otake, Hirotoshi Sakamoto
  • Publication number: 20040040455
    Abstract: In a screen printing method of bringing a mask plate into contact with a substrate to print solder cream through a pattern hole on the substrate, a plate separating operation of separating the substrate from the mask plate after a squeegeeing step in which the solder cream is filled into the pattern hole comprises an operation pattern in which acceleration and deceleration pattern in which a descending speed is accelerated up to an upper limit speed and thereafter decelerated up to a lower limit speed is repeated plural times. Further, an initial upper limit speed in start of the plate separating operation is set higher than the succeeding upper limit speeds, whereby viscosity of the solder cream into the pattern hole in start of the plate separating operation is lowered, and the mask plate can be separated with a high accuracy throughout the entire range of the substrate.
    Type: Application
    Filed: August 25, 2003
    Publication date: March 4, 2004
    Applicant: Matsushita Electric Industrial Co., Ltd
    Inventors: Yuji Otake, Seiichi Miyahara, Akira Maeda, Masayuki Mantani
  • Patent number: 6698347
    Abstract: Cream solder stored in a squeegee head is pressurized by a pressurizing plate, and the squeegee head is slid on a mask plate, so that the cream solder is printed onto a substrate via pattern apertures. This is done by a screen printing apparatus, in which pressurized solder is accommodated, and the solder is brought into contact with a surface of the mask plate via an opening formed on a lower face of the cell. A rectifier is disposed in the cell for blocking the cream solder from flowing into a specific area just above the opening. This structure allows the solder to flow into the opening in a slant direction, and causes the solder to roll. This mechanism prevents the solder from being hardened due to staying stagnant just above the opening, and thus prevents defective printings.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: March 2, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiichi Miyahara, Kimiyuki Yamasaki, Takahiro Fukagawa, Kunihiko Tokita
  • Publication number: 20030230203
    Abstract: A cream solder cartridge used in a screen printing apparatus which prints cream solder on a board through pattern holes by sliding, on a mask plate, a closed squeegee that is stored with cream solder inside is composed of a long and narrow concave portion made of a flexible film-like material, a brim portion projecting from the outer periphery of the concave portion, and a film-like cover sheet that is stuck to the brim portion and thereby closes the opening of the concave portion. This configuration makes it possible to supply paste at a low cost and to perform a viscosity adjustment easily by externally stirring the paste accommodated inside.
    Type: Application
    Filed: June 16, 2003
    Publication date: December 18, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiko Abe, Seiichi Miyahara, Yuji Otake
  • Publication number: 20030188646
    Abstract: It is possible to obtain a screen printing method that may assure excellent printing qualities since the screen printing method of the present invention includes: (A) sliding a squeegee head with paste stored in the squeegee head on a mask plate, while the past is pressurized, and printing the paste on a substrate through pattern holes of the mask plate, (B) at least one step of (b) separating the squeegee head with the paste stored therein from the mask plate, and (e) sliding the squeegee head on the mask plate for a pre-squeezing purpose before the step (A). The step of separating the squeegee head from the mask plate includes the steps of (1) discontinuing the pressure application to the paste stored in the squeegee head, (2) horizontally moving the squeegee head by a predetermined distance while the bottom end portion of the squeegee head is abutted on the mask plate in a state of the pressure application being discontinued, and (3) moving the squeegee head upward off from the mask plate.
    Type: Application
    Filed: March 28, 2003
    Publication date: October 9, 2003
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Seiichi Miyahara, Takahiro Fukagawa, Minoru Murakami, Michinori Tomomatsu, Seiko Abe, Kimiyuki Yamasaki, Kunihiko Tokita
  • Patent number: 6615715
    Abstract: A squeegee head having a volume-variable container and a printing space is used. The volume-variable container is variable in capacity with pressures applied thereto. The volume-variable container includes a projecting portion having a plurality of projections, a push-plate with a plurality of through-holes formed therein, and a side wall. A paste is stored in the volume-variable container. The projecting portion is pressurized to move and the paste is pushed out into the printing space from the through-holes, and then, the projections are fitted into the through-holes. In this way, the paste being stable in viscosity is completely pushed out into the printing space without wasting at all.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: September 9, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seikoh Abe, Michinori Tomomatsu, Seiichi Miyahara, Kimiyuki Yamasaki
  • Patent number: 6612232
    Abstract: A screen printer for printing paste on a board by sliding a squeegee head on a mask plate. A pushing plate pressurizes solder paste in the squeegee head, and pressurized paste is led to a paste container from both outer parts in a printing width direction inward towards a printing center through a solder dispensing hole provided on both ends of the paste container. This configuration allows to print in accordance with the time-line supply sequence, regardless of the printing width of the board to be printed. This screen printer thus prevents the degradation and the consequent need for disposal of solder paste due to its retention in the squeegee head for long periods.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: September 2, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiichi Miyahara, Michinori Tomomatsu, Kimiyuki Yamasaki, Kunihiko Tokita