Image forming apparatus service system

• US 5,913,090 A
• Filed: 05/30/1997
• Issued: 06/15/1999
• Est. Priority Date: 05/31/1996
• Status: Expired due to Term

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Ishikawa, Ryoichi, Sawada, Masaithi
• Primary Examiner(s): ROYER, WILLIAM J
• Application Number:
  US08/866,390
• Time in Patent Office: 746 Days
• Field of Search: 399/8-11, 399/21, 379/100.05
• US Class Current: 399/8
• CPC Class Codes: G03G 15/70 Detecting malfunctions relating to paper handling, e.g. jams

Abstract

An image forming apparatus service system of the present invention includes a shared managing unit capable of predicting whether or not a serviceman'"'"'s visit is necessary on the basis of data received from each of a plurality of image forming apparatuses, including low CV layer apparatuses, operated in a broad area including a number of service stations. The service system therefore allows a serviceman to take an adequate measure rapidly and efficiently before a critical trouble occurs in any one of the apparatuses.

Claims

1. An image forming apparatus service system comprising:

a plurality of image forming apparatuses;

a managing unit connected to said plurality of image forming apparatuses by a communication network for remote-managing said plurality of image forming apparatuses; and

a plurality of terminal units connected to said managing unit by a communication network, and each being located at a particular service station;

said plurality of image forming apparatuses each sending, when an abnormal phenomenon or pre-phenomenon occurs during operation, alarm data indicative of said phenomenon or pre-phenomenon to said managing unit, said plurality of image forming apparatuses each including alarm data invalidating means for invalidating said alarm data based on whether a number of copies counted is less than a standard value when the abnormal phenomenon or pre-phenomenon occur, said managing unit analyzing said alarm data to thereby selectively send data relating to maintenance or repair to said plurality of terminal units;

said managing unit comprising;

received data storing means for storing data received from any one of said plurality of image forming apparatuses;

analyzing means for analyzing said data stored in said received data storing means;

predicting means for predicting, based on a result of analysis output from said analyzing means, whether or not a serviceman'"'"'s visit is necessary; and

transmitting means for transmitting a result of prediction output from said predicting means to one of said plurality of terminal units located at the service station covering the image forming apparatus needing a serviceman'"'"'s visit.

2. An image forming apparatus service system comprising:

a plurality of image forming apparatuses;

a managing unit connected to said plurality of image forming apparatuses by a communication network for remote-managing said plurality of image forming apparatuses; and

a plurality of terminal units connected to said managing unit by a communication network, and each being located at a particular service station;

said plurality of image forming apparatuses each sending, when an abnormal phenomenon or pre-phenomenon occurs during operation, alarm data indicative of said phenomenon or pre-phenomenon to said managing unity, said managing unit analyzing said alarm data to thereby selectively send data relating to maintenance or repair to said plurality of terminal units;

said managing unit comprising;

received data storing means for storing data received from any one of said plurality of image forming apparatuses;

analyzing means for analyzing said data stored in said received data storing means;

predicting means for predicting, based on a result of analysis output from said analyzing means, whether or not a serviceman'"'"'s visit is necessary; and

transmitting means for transmitting a result of prediction output from said predicting means to one of said plurality of terminal units located at the service station covering the image forming apparatus needing a serviceman'"'"'s visit;

wherein said plurality of image forming apparatuses each comprises adding means for adding to said alarm data, state data including integrated numbers of images formed and each corresponding to one of a preselected number of latest abnormal phenomena or pre-phenomena occurred.

3. A service system as claimed in claim 2, wherein said plurality of image forming apparatuses further comprises:

a plurality of paper sensors each being positioned at a particular location on a paper transport path;

jam detecting means for detecting a paper jam during operation location by location on the basis of outputs of said plurality of paper sensors;

standard value storing means for storing location-by-location standard paper jam values corresponding to numbers of images formed and used to determine whether or not jam data is valid;

image counting means for counting images continuously formed without any paper jam;

jam alarm counting means for counting, when said jam detecting means detects a paper jam at any one of the locations, jam occurrence data if a count output from said image counting means is not greater than said standard paper jam value;

resetting a count of said jam occurrence data when the count of said image counting means reaches said standard paper jam value before said jam detecting means detects a paper jam at said one location later; and

outputting, when the count of said jam occurrence data reaches a preselected reference value, jam alarm data showing that a probability of frequent jam is high; and

jam alarm data transmitting means for transmitting to said managing unit the location-by-location jam alarm data output from said jam alarm counting means as said alarm data, while adding said state data to said location-by-location jam alarm data;

said predicting means of said managing unit determining, on determining that more than a preselected reference number of said data stored in said received data storing means together with said jam alarm data are representative of paper jams derived from a same location or a same cause and occurred at intervals shorter than an interval corresponding to a preselected reference number of images on the basis of a result of analysis output from said analyzing means, that said jam alarm data is valid data indicative of a high probability of a trouble, and predicting that a serviceman'"'"'s visit is necessary.

4. A service system as claimed in claim 3, wherein said managing unit further comprises setting means for allowing a desired number of state data to be set.

5. A service system as claimed in claim 3, wherein said managing unit further comprises setting means for allowing a desired reference number of images to be set.

6. A service system as claimed in claim 3, wherein said predicting means of said managing unit determines, on determining that more than said preselected reference number of said data representative of the paper jams derived from the same location or the same cause and occurred at said intervals are not present, that said jam alarm data is invalid data indicative of a low probability of a trouble, and predicts that a serviceman'"'"'s visit is not necessary.

7. A service system as claimed in claim 6, wherein said managing unit further comprises setting means for allowing a desired number of state data to be set.

8. A service system as claimed in claim 6, wherein said managing unit further comprises setting means for allowing a desired reference number of images to be set.

9. A service system as claimed in claim 8, wherein said managing unit further comprises setting means for allowing a desired number of state data to be set.

10. A service system as claimed in claim 2, wherein said plurality of image forming apparatuses each comprises:

a plurality of paper sensors each being positioned at a particular location on a paper transport path;

jam detecting means for detecting a paper jam during operation location by location on the basis of outputs of said plurality of paper sensors;

standard value storing means for storing location-by-location standard paper jam values corresponding to numbers of images formed and used to determine whether or not jam data is valid;

image counting means for counting images continuously formed without any paper jam;

jam alarm counting means for counting, when said jam detecting means detects a paper jam at any one of the locations, jam occurrence data if a count output from said image counting means is not greater than said standard paper jam value;

resetting a count of said jam occurrence data when the count of said image counting means reaches said standard paper jam value before said jam detecting means detects a paper jam at said one location later; and

outputting, when the count of said jam occurrence data reaches a preselected reference value, jam alarm data showing that a probability of frequent jam is high; and

jam alarm data transmitting means for transmitting to said managing unit the location-by-location jam alarm data output from said jam alarm counting means as said alarm data, while adding said state data to said location-by-location jam alarm data;

said predicting means of said managing unit determining, on determining that more than a preselected reference number of said data stored in said received data storing means together with said jam alarm data are representative of paper jams derived from a same paper size and occurred at intervals shorter than an interval corresponding to a preselected reference number of images on the basis of a result of analysis output from said analyzing means, that said jam alarm data is valid data indicative of a high probability of a trouble, and predicting that a serviceman'"'"'s visit is necessary.

11. A service system as claimed in claim 10, wherein said managing unit further comprises setting means for allowing a desired number of state data to be set.

12. A service system as claimed in claim 10, wherein said managing unit further comprises setting means for allowing a desired reference number of images to be set.

13. A service system as claimed in claim 12, wherein said managing unit further comprises setting means for allowing a desired number of state data to be set.

14. A service system as claimed in claim 10, wherein said predicting means of said managing unit determines, on determining that more than said preselected reference number of said data representative of the paper jams derived from the same paper size and occurred at said intervals are not present, that said jam alarm data is invalid data indicative of a low probability of a trouble, and predicts that a serviceman'"'"'s visit is not necessary.

15. A service system as claimed in claim 14, wherein said managing unit further comprises setting means for allowing a desired number of state data to be set.

16. A service system as claimed in claim 14, wherein said managing unit further comprises setting means for allowing a desired reference number of images to be set.

17. A service system as claimed in claim 16, wherein said managing unit further comprises setting means for allowing a desired number of state data to be set.