Control apparatus of copying machine with improved communication function for centralized control unit
US5300980A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 8, 1991 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Apr 8, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/5079
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A control apparatus according to the present invention is a control apparatus collecting data related to copying machines and communicating with a centralized control unit on the basis of the data collected, including a communication device for calling the centralized control unit, a determination device for determining that connection with the centralized control device can not be made in spite of the fact that the communication device is activated, a setting device for setting a retransmission time on the basis of a random number in a predetermined time period in response to a determination output of the determination device, a timer device for counting the present time, and a control device for having the communication device call the centralized control unit again when the present time becomes the retransmission time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.