| Patent application number | Description | Published |
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| 20090057997 | Printer, drive control method, and motor control program for printer - A printer includes a motor, a position calculation unit, a speed calculation unit, a position control unit, a speed control unit, and a switching unit. The motor generates a driving force by which a transported object is transported. The position calculation unit calculates a current position of the transported object through driving the motor. The speed calculation unit calculates a current speed of the transported object through driving the motor. The position control unit controls the motor using at least PI control on the basis of the current position calculated by the position calculation unit and a target position. The speed control unit controls the motor using at least PI control on the basis of the current speed calculated by the speed calculation unit and a target speed. The switching unit switches from control of the motor using the speed control unit to control of the motor using the position control unit at a position that is a predetermined distance before a target stop position to which the motor is driven. | 03-05-2009 |
| 20090060559 | Liquid ejecting apparatus - A liquid ejecting apparatus includes a record head having nozzles that discharge liquid; a transporting path along which a medium is transported; a transporting mechanism that transports the medium along the transporting path; a sensor including a light-emitting element and a light-receiving element and disposed at a first position on the transporting path, the first position being located upstream relative to the record head in a transporting direction of the medium, the sensor outputting a signal in accordance with presence or absence of the medium at the first position; and a control unit that controls supply of power to the sensor and detects the presence or absence of the medium through the sensor. The control unit stops the supply of power to the sensor when the control unit detects a downstream end of the medium in the transporting direction, and resumes the supply of power to the sensor when the control unit detects an upstream end of the medium in the transporting direction. | 03-05-2009 |
| 20090245912 | Motor control device, fluid ejection device, and motor control method - A motor control device includes: a first motor that provides a driving force for rotating a roll on which a roll paper is wound to supply the roll paper from the roll; a second motor that provides a driving force for driving a transport driving roller which is provided on a downstream side than the roll along a supply direction of the roll paper and used for transporting the roll paper; a load measuring unit that measures a relationship between a load on the first motor and a driving speed of the first motor when the second motor is not driven and the first motor is driven; and a motor control unit that simultaneously drives the first and second motors at a certain timing, provides to the first motor an interpolation output based on the measurement result of the load measurement unit and a driving speed of the second motor during the control, and transports the roll paper to the downstream side by driving the second motor. | 10-01-2009 |
| 20090269119 | PRINTING APPARATUS AND PRINTING METHOD - A printing apparatus including: a first motor configured to provide a drive force for rotating a roll member that is a wound medium; a second motor configured to provide a drive force for driving a transporting drive roller provided on a downstream side of the roll member along a feeding direction of the medium for transporting the medium; and a control unit configured to drive at least one of the first motor and the second motor to cancel the slackness of the medium generated between the roll member and the transporting drive roller. | 10-29-2009 |
| 20090315503 | Control device of stepping motor, image reading device, control method and control program of stepping motor - A method of reading an image by an image sensor comprising: a) reciprocating a carriage from a predetermined position in a predetermined direction by rotating a stepping motor to which a second current value smaller than a first current value is supplied; and b) detecting whether or not the carriage after reciprocating is disposed at the predetermined position, by the sensor, wherein, in the case where the sensor detects that the carriage after reciprocating is disposed at the predetermined position, when the image sensor reads an image, the first current value is supplied to the stepping motor, and in the case where the sensor detects that the carriage after reciprocating is not disposed at the predetermined position, when the image sensor reads an image, a current value obtained by adding a third current value to the first current value is supplied to the stepping motor. | 12-24-2009 |
| 20100053251 | PRINTING METHOD AND PRINTING APPARATUS - There is provided a printing method using a first motor that applies a driving force for rotating a roll body around which a printing medium is wound, a second motor that applies a driving force for intermittently driving a transport driving roller that transports the printing medium, and a print head that intermittently ejects ink onto the printing medium alternately with the driving of the second motor. The printing method includes driving the first motor such that tension applied to the printing medium is constant during at least a part of a period in which the second motor is driven and stopping the driving of the first motor during at least a part of a period in which the driving of the second motor is stopped. | 03-04-2010 |
| 20100073423 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a liquid ejecting head which ejects a liquid onto a liquid ejection surface of an ejection target member; a scanning unit which scans the liquid ejecting head relative to the ejection target member; a driving force transmission mechanism which transmits driving force of a rotary driving force source to the scanning unit through a belt; an encoder which detects a scanning position of the liquid ejecting head relative to the ejection target member and having a scale disposed at a position adjacent to the belt; and a neutralizing unit which removes static electricity from the belt. | 03-25-2010 |
| 20100079541 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a liquid ejecting head which ejects a liquid onto a liquid ejection surface of an ejection target member; a scanning unit which scans the liquid ejecting head relative to the ejection target member; and a driving force transmission mechanism which transmits driving force of a rotary driving force source to the scanning unit through a belt, wherein a liquid absorbing material which absorbs and retains mists of a liquid floating in an inner space of the liquid ejecting apparatus is disposed on the belt. | 04-01-2010 |
| 20110085842 | PRINTING APPARATUS - A printing apparatus includes: a motor which drives a shaft of a roll body in which a medium is wound, in the feeding direction of the medium; a transport roller which transports the medium fed from the roll body; and a control section which supplies electric power for rotating the roll body to the motor, wherein the electric power that the control section supplies to the motor at the time of the start of the feeding of the medium is larger when the diameter of the roll body is R | 04-14-2011 |
| 20110164084 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a record head having nozzles that discharge liquid; a transporting path along which a medium is transported; a transporting mechanism that transports the medium along the transporting path; a sensor including a light-emitting element and a light-receiving element and disposed at a first position on the transporting path, the first position being located upstream relative to the record head in a transporting direction of the medium, the sensor outputting a signal in accordance with presence or absence of the medium at the first position; and a control unit that controls supply of power to the sensor and detects the presence or absence of the medium through the sensor. The control unit stops the supply of power to the sensor when the control unit detects a downstream end of the medium in the transporting direction, and resumes the supply of power to the sensor when the control unit detects an upstream end of the medium in the transporting direction. | 07-07-2011 |
