US 9,039,127 B2Granted

Driver apparatus, image forming apparatus, and method of controlling driver apparatus

AssigneeRicoh Company, Ltd.

InventorSuguru Yokozawa

Life of this patent

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Abstract

A driver apparatus includes a drive unit to move a moveable unit along a given path using a drive force; a movement detector to detect movement of the moveable unit; a drive control unit to control the drive unit using a given output for a given time to drive the moveable unit; a determination unit to determine whether the movement detector detects a movement of the moveable unit for a given distance or more in a driving direction when the moveable unit is driven under a control of the drive control unit; and an abnormality detector to determine occurrence of abnormal when the determination unit determines that the moveable unit does not move the given distance or more.

Claims7

Dependent claims

A driver apparatus, comprising:

a motor configured to move a carriage;
a driver configured to:
output a first voltage for a given time to the motor to move the carriage in a first direction,
output a second voltage to the motor to move the carriage in a second direction that is an opposite direction to the first direction when the carriage does not move for a given distance after outputting the first voltage for the given time,
output a third voltage to the motor that is greater than the first voltage to move the carriage in the first direction when the carriage does not move for the given distance after outputting the second voltage, and
output a fourth voltage to the motor that is greater than the second voltages to move the carriage in the second direction when the carriage does not move for the given distance after outputting the third voltage;
and
a determination unit configured to determine that abnormality occurs when the carriage does not move for the given distance after outputting the fourth voltage to the motor.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/092,604Filed 27 Nov 2013
Priority: JP 2012-2667035 Dec 2012
Published: US 2014/0152736 A15 Jun 2014
Granted: 26 May 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B41J 19/205
Drive control means for carriage movement: position or speed detectors therefor
B41J 2/12
Characterised by jet control: testing or correcting charge or deflection
B41J 19/207
Position or speed detectors therefor: encoding along a bar
B41J 29/38
Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for: drives, motors, controls or automatic…

Family

US 2014/0152736 A1Pre-grant publication · published 5 Jun 2014
US 9,039,127 B2This patent

From the US filing history. Foreign family members aren’t listed.

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