Copying machine control system controlling a plurality of copying machines through communication network

Claim 5

A copying machine control system including a data terminal connected to a copying machine and a centralized control unit communicating with the data terminal through a communication network, wherein said data terminal includes; first reception means for receiving data from said copying machine, calculation means for calculating the frequency of trouble occurrence as to a particular portion or operation mode of said copying machine based on said received data, first transmission means for transmitting data to said centralized control unit when said calculated frequency of trouble occurrence is more than a prescribed threshold value, and said centralized control unit includes; second reception means for receiving data from said data terminal, determination means for determining whether or not the use of a particular portion or operation mode of said copying machine should be prohibited based on the data from said data terminal, and second transmission means for transmitting to said data terminal a prohibition signal instructing prohibition of the use of said particular portion or operation mode, when said determination means determines that the use of said particular portion or operation mode should be prohibited.

Claim 6

A copying machine control system including a data terminal connected to a copying machine and a centralized control unit communicating with the data terminal through a communication network, wherein said data terminal includes; first reception means for receiving data from said copying machine, calculation means for calculating the frequency of trouble occurrence as to a particular portion or operation mode of said copying machine based on said received data, first transmission means for transmitting data to said centralized control unit when said calculated frequency of trouble occurrence is more than a prescribed threshold value, and said centralized control unit includes; second reception means for receiving data from said data terminal, determination means for determining whether or not the use of a particular portion or operation mode of said copying machine should be prohibited based on the data from said data terminal, and second transmission means for transmitting to said data terminal a prohibition signal instructing prohibition of the use of said particular portion or operation mode, when said determination means determines that the use of said particular portion or operation mode should be prohibited.

Claim 7

A control system as recited in claim 3, wherein said determination means determines whether or not the operation of the entire copying machine should be prohibited based on the data from said data terminal, and said second transmission means transmits to said data terminal another prohibition signal instructing prohibition of the operation of the entire copying machine, when said determination means determines that the operation of the entire copying machine should be prohibited.

Claim 8

A control system as recited in claim 3, wherein said prescribed threshold value is variable.

Claim 9

A control system as recited in claim 5, wherein said centralized control unit includes third transmission means for transmitting data for using as a threshold value to said data terminal, and said prescribed value is changed based on the data transmitted from said centralized control unit.

Claim 10

A centralized control unit controlling a plurality of copying machines through a communication network, comprising: reception means for receiving data from each of the copying machines; storage means for storing data indicaticating the state in which a particular portion or operation mode of each of the copying machines should be prohibited; determination means for determining whether or not the use of said particular portion or operation mode should be prohibited based on data from each of the copying machines and by referring to said storage means, transmission means for transmitting to the copying one of said copying machines a prohibition signal instructing prohibition of the use of said particular portion or operation mode, when said determination means determines that the use of said particular portion or operation mode of machine should be prohibited.

Claim 11

A centralized control unit controlling a plurality of copying machines through a communication network, comprising: reception means for receiving data from each of the copying machines; storage means for storing data indicaticating the state in which a particular portion or operation mode of each of the copying machines should be prohibited; determination means for determining whether or not the use of said particular portion or operation mode should be prohibited based on data from each of the copying machines and by referring to said storage means, transmission means for transmitting to the copying one of said copying machines a prohibition signal instructing prohibition of the use of said particular portion or operation mode, when said determination means determines that the use of said particular portion or operation mode of machine should be prohibited.

Claim 12

A control system as recited in claim 7, further comprising input means for inputting data instructing prohibition of the use of an arbitrary portion or operation mode of one of the copying machines, wherein said transmission means transmits to the copying machine a prohibition signal instructing prohibition of the use of said arbitrary portion or operation mode based on the data input from said input means.