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US 7,255,501 B2Granted
Printing device
AssigneeOki Data Corporation
InventorTakashi Arai
Life of this patent
Estimating the term…
Abstract
A printing device includes a function adding unit detachable to the printing device; a display unit for displaying an error message; a detection unit for detecting that the function adding unit is attached to the printing device; and a device control unit for controlling the display unit to display the error message when the function adding unit is not attached to the printing device.
Claims15
A printing device, comprising:
- a function adding unit arranged to be detachable,
- a display unit for displaying error information of the printing device,
- a non-volatile memory for storing device information when said attached function adding unit is selected;
- a detection unit for detecting whether the function adding unit is attached when said printing device is turned on, and
- a control unit electrically connected to the display unit and the detection unit for requesting the display unit to display the error information when the function adding unit is not attached and said device information is stored in said non-volatile memory.
2 more elements
A printing device comprising:
- a function adding unit arranged to be detachable and including a memory unit for storing device information,
- a display unit for displaying error information of the printing device,
- a detection unit for detecting whether the function adding unit is attached, and
- a control unit electrically connected to the display unit and the detection unit for requesting the display unit to display the error information when the function adding unit is not attached, wherein said detection unit detects whether the function adding unit is attached when there is information indicating that a mode is set for storing the device information.
1 more element
Dependencies are inferred from the claim text.