Method of printing test pattern and apparatus for outputting test pattern

• US 5,619,307 A
• Filed: 07/06/1995
• Issued: 04/08/1997
• Est. Priority Date: 07/07/1994
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Takahashi, Atsuya, Ohtaka, Koichi, Kinoshita, Nobuyuki, Takahashi, Masako, Machino, Hitoshi
• Primary Examiner(s): Smith, Matthew S.
• Application Number:
  US08/498,873
• Time in Patent Office: 642 Days
• Field of Search: 355/203-207, 355/202, 355/200
• US Class Current: 399/11
• CPC Class Codes: G03G 15/5079 for maintenance
• CPC Class Codes: G03G 15/55 Self-diagnostics; Malfunction or lifetime display
• CPC Class Codes: G03G 2215/00569 Calibration, test runs, test prints
• CPC Class Codes: G06K 15/00 Arrangements for producing a permanent visual presentation of the output data , e.g. computer output printersprinting or plotting combined with another operation, e.g. with conveying, G06K17/00
• CPC Class Codes: G06K 2215/0085 Error recovery

Abstract

It is an object of the present invention to provide an apparatus and method which allow a service engineer to accurately analyze the situation of a printer and specify a failure when he or she arrives at the place where the printer is installed. A computer predicts a failure from the status information of a printer, and transmits a test pattern corresponding to the failure to the printer via a controller. The computer then outputs an indication of print out. The service engineer can accurately analyze the failure because the test pattern has already been printed out upon occurrence of the failure.

Claims

1. A method of printing a test pattern, comprising the steps of:

determining a type of abnormality in a printer on the basis of status information of said printer; and

causing said printer to print out a test pattern corresponding to the determined type of abnormality.

2. A method according to claim 1, wherein the determination step includes the step of receiving status information from said printer and determining a type of abnormality in said printer on the basis of the received status information.

3. A method according to claim 1, wherein the print step includes the step of selecting a test pattern corresponding to the determined type of abnormality from a plurality of test patterns stored in advance, and transmitting pattern data representing the selected test pattern to said printer.

4. A method according to claim 1, wherein said printer is an electrophotographic printer.

5. A method according to claim 4, wherein the test pattern includes a plurality of test patterns which are a vertical stripes pattern, a horizontal stripes pattern, and a halftone pattern.

6. A method according to claim 1, wherein the status information includes error information of said printer.

7. A method according to claim 1, wherein the status information includes information of the number of times of operations of said printer or information of an operation time thereof.

8. An apparatus for outputting a test pattern, comprising:

determining means for determining a type of abnormality in a printer on the basis of status information of said printer; and

transmission means for transmitting a test pattern corresponding to the type of abnormality determined by said determining means to said printer and causing said printer to print out the test pattern.

9. An apparatus according to claim 8, further comprising reception means for receiving status information from said printer, and wherein said determining means determines a type of abnormality in said printer on the basis of the received status information received by said reception means.

10. An apparatus according to claim 9, wherein the test pattern includes a plurality of test patterns which are a vertical stripes pattern, a horizontal stripes pattern, and a halftone pattern.

11. An apparatus according to claim 8, further comprising selection means for selecting a test pattern corresponding to the determined type of abnormality from a plurality of test patterns stored in advance, and wherein said transmission means transmits pattern data representing the test pattern selected by said selection means to said printer.

12. An apparatus according to claim 8, wherein said printer is an electrophotographic printer.

13. An apparatus according to claim 8, wherein the status information includes error information of said printer.

14. An apparatus according to claim 8, wherein the status information includes information of the number of times of operations of said printer or information of an operation time thereof.

15. A method of printing a test pattern, comprising the steps of:

determining a type of abnormality in an image forming apparatus on the basis of status information of the image forming apparatus; and

causing the image forming apparatus to form a test pattern corresponding to the determined type of abnormality.

16. An apparatus for outputting a test pattern, comprising:

determining means for determining a type of abnormality in an image forming apparatus on the basis of status information of the image forming apparatus; and

transmission means for transmitting a test pattern corresponding to the determined type of abnormality determined by said determining means to the image forming apparatus and causing the image forming apparatus to form the test pattern as an image.