SEIKO EPSON COPRPORATION Patent applications |
Patent application number | Title | Published |
20120140293 | DRIVING APPARATUS - To rotate a transport motor and to stop a carriage motor at an ADF reading angle, a control unit outputs a first and a second signal to a first and a second D/A converter, and a power on/off signal to an A-phase driver circuit for the carriage motor. The D/A converters convert the signal to a first and a second voltage. A transport motor driver supplies power to the transport motor on the basis of the first voltage, and a carriage motor driver turns on and off power supply to the A-phase on the basis of the first voltage and the power on/off signal, and supplies power to a B-phase on the basis of the second voltage. | 06-07-2012 |
20110222118 | PRINTING APPARATUS, PRINTING APPARATUS CONTROL METHOD, AND CONTROL PROGRAM AND CONTROL APPARATUS FOR PRINTING APPARATUS - A printing apparatus with a plug-and-play execution unit includes a plug-and-play control unit and a permission receiving unit. The plug-and-play execution unit can perform predetermined communication processing with an external control apparatus, and the predetermined communication processing is triggered by a connection with the control apparatus when the connection is established via a predetermined communication path. The plug-and-play control unit is configured to prohibit the plug-and-play execution unit from operating in a case where an instruction for activating the printing apparatus according to a specific operation mode is received from an outside source, so that the plug-and-play execution unit is prevented from performing the communication processing. The permission receiving unit is configured to receive permission for execution of plug and play. In a case where the permission for execution is received, the plug-and-play control unit cancels the prohibition of operation of the plug-and-play execution unit. | 09-15-2011 |