Patents by Inventor Kiyomasa IMAIZUMI

Kiyomasa IMAIZUMI 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: 10603936
    Abstract: A printer includes a carriage, a carriage moving mechanism including a motor, a motor driver that controls the motor, a stop instruction device, and an interlock device. The stop instruction device transmits a stop signal for the carriage or stops a driving permission signal for the carriage when a predetermined stop condition is satisfied. The interlock device is interposed between the motor and the motor driver and shuts off the motor from the motor driver after a lapse of a predetermined delay time of transmitting the stop signal or stopping the driving permission signal. The motor driver controls the motor to decelerate the carriage in at least a portion of a period before the delay time has elapsed.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: March 31, 2020
    Assignee: ROLAND DG CORPORATION
    Inventors: Kiyomasa Imaizumi, Kiyoshi Fujimoto, Sachie Muroga
  • Publication number: 20190308408
    Abstract: Job types include a first job type in which a second process is performed after a first process and a second job type in which the first process is performed and the second process is not performed. In a printer, a recording medium is allowed to be sandwiched by a center pinching roller and driving rollers. A controller of the printer includes a first primary elevation controller that controls the center pinching roller such that the center pinching roller stays down on the driving rollers to hold the recording medium in performing the first process in the first job type and a first secondary elevation controller that controls the center pinching roller to move upward and stay away from the driving rollers in performing the first process in the second job type.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 10, 2019
    Inventors: Shinya YAMAMOTO, Masakazu IGARASHI, Kiyomasa IMAIZUMI
  • Patent number: 10369822
    Abstract: A printer includes a motor power supply line connecting a carriage motor with a power source, a sensor power supply line connecting a rotary encoder with the power source, a circuit breaker provided on the motor power supply line and interrupting electrical power if a cover sensor detects that a front cover is open and permit connection if the cover sensor detects that the front cover is closed, and a controller controlling the carriage motor and a recording head based on a position of a carriage detected by the rotary encoder.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: August 6, 2019
    Assignee: ROLAND DG CORPORATION
    Inventors: Shinya Yamamoto, Masakazu Igarashi, Kiyomasa Imaizumi, Takeshi Nakanishi
  • Publication number: 20190001716
    Abstract: A printer includes a carriage, a carriage moving mechanism including a motor, a motor driver that controls the motor, a stop instruction device, and an interlock device. The stop instruction device transmits a stop signal for the carriage or stops a driving permission signal for the carriage when a predetermined stop condition is satisfied. The interlock device is interposed between the motor and the motor driver and shuts off the motor from the motor driver after a lapse of a predetermined delay time of transmitting the stop signal or stopping the driving permission signal. The motor driver controls the motor to decelerate the carriage in at least a portion of a period before the delay time has elapsed.
    Type: Application
    Filed: June 22, 2018
    Publication date: January 3, 2019
    Inventors: Kiyomasa IMAIZUMI, Kiyoshi FUJIMOTO, Sachie MUROGA
  • Publication number: 20170326893
    Abstract: A printer includes a motor power supply line connecting a carriage motor with a power source, a sensor power supply line connecting a rotary encoder with the power source, a circuit breaker provided on the motor power supply line and interrupting electrical power if a cover sensor detects that a front cover is open and permit connection if the cover sensor detects that the front cover is closed, and a controller controlling the carriage motor and a recording head based on a position of a carriage detected by the rotary encoder.
    Type: Application
    Filed: May 11, 2017
    Publication date: November 16, 2017
    Inventors: Shinya YAMAMOTO, Masakazu IGARASHI, Kiyomasa IMAIZUMI, Takeshi NAKANISHI