IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0195604
(1998-11-19)
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우선권정보 |
JP-9-322840(1997-11-25); JP-9-328789(1997-11-28); JP-9-328837(1997-11-28); JP-9-328842(1997-11-28); JP-9-328843(1997-11-28); JP-10-065787(1998-03-16); JP-10-251670(1998-09-04) |
발명자
/ 주소 |
- Tomidokoro,Nobuaki
- Asakawa,Tetsuo
- Miyawaki,Shohzoh
- Nishida,Hiroshi
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출원인 / 주소 |
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대리인 / 주소 |
Oblon, Spivak, McClelland, Maier &
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인용정보 |
피인용 횟수 :
2 인용 특허 :
18 |
초록
▼
An image forming device management system includes a plurality of image forming devices, a central service station which provides a maintenance service for the image forming devices, and a communication control unit which is connected to each of the image forming devices by a signal line, the commun
An image forming device management system includes a plurality of image forming devices, a central service station which provides a maintenance service for the image forming devices, and a communication control unit which is connected to each of the image forming devices by a signal line, the communication control unit connecting one of the image forming devices to the central service station via a communication network. In the system, each of the image forming devices includes a message unit which outputs a signal line separation message when the image forming device has no signal from the central service station or the communication control unit over a predetermined period.
대표청구항
▼
What is claimed is: 1. An image forming device management system, comprising: a plurality of image forming devices; a central service station for providing a maintenance service for the image forming devices; and a communication control unit connected to each of the image forming devices by a signa
What is claimed is: 1. An image forming device management system, comprising: a plurality of image forming devices; a central service station for providing a maintenance service for the image forming devices; and a communication control unit connected to each of the image forming devices by a signal line, the communication control unit connecting one of the image forming devices to the central service station by a communication network, each of the image forming devices being configured to detect a signal line separation from at least one of the central service station and the communication control unit over a predetermined period, the detection being periodically performed by each of the image forming devices, and to display a signal line separation message when the image forming device detects the signal line separation from at least one of the central service station and the communication control unit over the predetermined period, wherein each image forming device is one of a printer, a copier, and a facsimile machine. 2. The system according to claim 1, wherein each of the image forming devices is configured to detect the signal line separation from the communication control unit over the predetermined period based on a response of the image forming device to a selecting of the communication control unit to the image forming device. 3. The system according to claim 1, wherein each of the image forming devices is configured to detect the signal line separation from the central service station over the predetermined period based on a response of the image forming device to a selecting of the central service station to the image forming device. 4. The system according to claim 1, wherein each of the image forming devices is configured to detect the signal line separation from the communication control unit over the predetermined period based on a response of the image forming device to a polling of the communication control unit to the image forming device. 5. The system according to claim 1, wherein each of the image forming devices includes a communication interface unit having a terminal connected to the communication control unit, and each of the image forming devices is configured to detect the signal line separation from the communication control unit over the predetermined period based on a detected voltage of the terminal of the communication interface unit. 6. The system according to claim 1, wherein each of the image forming devices includes a connection detecting circuit having an input connected to the communication control unit, and each of the image forming devices is configured to detect the signal line separation from the communication control unit over the predetermined period based on an output of the connection detecting circuit. 7. The system of claim 1, wherein each of the image forming devices is configured to detect directly the signal line separation, without receiving a report from a second device that indicates that the signal line separation was detected by the second device. 8. An image forming device management system, comprising: a plurality of image forming devices; a central service station for providing a maintenance service for the image forming devices; and a communication control unit connected to each of the image forming devices by a signal line, the communication control unit connecting one of the image forming devices to the central service station by a communication network, each of the image forming devices being configured to detect a signal line separation of the communication control unit over a predetermined period, the detection being periodically performed by each of the image forming devices, and to display a signal line separation message when the image forming device detects the signal line separation from the communication control unit over the predetermined period, and wherein said display of the signal line separation message indicates a signal line separation along the signal line between the image forming device and the communication control unit, wherein each image forming device is one of a printer, a copier, and a facsimile machine. 9. An image forming device management system, comprising: a plurality of means for image forming; maintenance service means provided for the plurality of means for image forming; and means for communicating and controlling, connected to each of the means for image forming by a signal line, the means for communicating and controlling connecting one of the means for image forming to the maintenance service means by a communication network, each of the means for image forming being configured to detect a signal line separation from at least one of the maintenance service means and the means for communicating and controlling over a predetermined period, the detection being periodically performed by each of the means for image forming, and to display a signal line separation message when the means for image forming detects the signal line separation from at least one of the maintenance service means and the means for communicating and controlling over the predetermined period, wherein each of the means for image forming is one of a printer, a copier, and a facsimile machine. 10. The system according to claim 9, wherein each of the means for image forming is configured to detect the signal line separation from the means for communicating and controlling over the predetermined period based on a response of the means for image forming to a selecting of the means for communicating and controlling to the means for image forming. 11. The system according to claim 9, wherein each of the means for image forming is configured to detect the signal line separation from the maintenance service means over the predetermined period based on a response of the means for image forming to a selecting of the maintenance service means to the means for image forming. 12. The system according to claim 9, wherein each of the means for image forming is configured to detect the signal line separation from the means for communicating and controlling over the predetermined period based on a response of the means for image forming to a polling of the means for communicating and controlling to the means for image forming. 13. The system according to claim 9, wherein each of the means for image forming includes a communication interface unit having a terminal connected to the means for communicating and controlling, and each of the means for image forming is configured to detect the signal line separation from the means for communicating and controlling over the predetermined period based on a detected voltage of the terminal of the communication interface unit. 14. The system according to claim 9, wherein each of the means of image forming includes a connection detecting circuit having an input connected to the means for communicating and controlling, and each of the means for image forming is configured to detect the signal line separation from the means for communicating and controlling over the predetermined period based on an output of the connection detecting circuit. 15. A means for image forming management, comprising: a plurality of means for image forming; maintenance service means provided for the means for image forming; and means for communicating and controlling connected to each of the means for image forming by a signal line, the means for communicating and controlling connecting one of the means for image forming to the maintenance service means by a communication network, each of the means for image forming being configured to detect a signal line separation from the means for communicating and controlling over a predetermined period, the detection being periodically performed by each of the means for image forming, and to display a signal line separation message when the means for image forming detects the signal line separation from the means for communicating and controlling over the predetermined period, wherein each of the means for image forming is one of a printer, a copier, and a facsimile machine.
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