Testing device for electrophotographic imaging apparatus
US5270774A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Jun 19, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/55
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic imaging apparatus has an engine driver board and a printer controller that are connectable to the engine driver. A testing device is connected to the engine driver board in order to test and/or monitor the operational function of the imaging apparatus by communicating with the engine driver board. In the imaging apparatus, the printer controller is disconnected from the engine driver when the testing device is connected to the engine driver board when a testing operation is performed. On the other hand, the connection between the engine driver board and the printer controller is maintained when the testing device is connected to the engine driver board merely to display the operational condition of the imaging apparatus without performing the testing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.