Method and system to erase data after expiration or other condition

• US 7,325,052 B1
• Filed: 07/01/2004
• Issued: 01/29/2008
• Est. Priority Date: 10/06/1998
• Status: Expired due to Fees

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Motoyama, Tetsuro
• Primary Examiner(s): Jean; Frantz B.
• Application Number:
  US10/884,109
• Time in Patent Office: 1,307 Days
• Field of Search: 709223-224, 713/300, 358 114- 116, 358/1.1
• US Class Current: 709/223
• CPC Class Codes: G06F 11/1417 Boot up procedures
• CPC Class Codes: G06F 11/2015 Redundant power supplies power supply failure G06F1/30
• CPC Class Codes: G06F 16/10 File systems; File servers
• CPC Class Codes: G06F 21/554 involving event detection and direct action
• CPC Class Codes: G06F 21/608 Secure printing
• CPC Class Codes: G06F 21/78 to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: G06F 21/86 Secure or tamper-resistant housings
• CPC Class Codes: G06F 2221/2143 Clearing memory, e.g. to prevent the data from being stolen

Abstract

An approach for managing print data on printing devices includes deleting print data that has been stored on a printing device for at least a specified time. The deletion of the print data based on whether the print data has been stored on the printing device for at least the specified time may be performed regardless of whether the print has been processed and may be used in conjunction with other mechanisms for deleting print data on printing devices. The approach for managing print data on printing devices also includes deleting print data from printing devices when the print data has been processed at the printing device at least a specified number of times.

Claims

1. A method for managing print data on a printing device, the method comprising the steps of:

receiving print data at the printing device;

causing the print data to be stored on a storage device at the printing device;

the printing device retrieving, from the print data, data that indicates a specified amount of time that the print data is to be stored on the storage device at the printing device;

the printing device determining whether the print data has been stored on the storage device at the printing device for at least the specified amount of time; and

if the print data has been stored on the storage device at the printing device for at least the specified amount of time, then causing the print data to be deleted from the storage device at the printing device.

2. The method as recited in claim 1, wherein the print data has not yet been processed at the printing device at the time the print data has been stored on the storage device for at least the specified amount of time.

3. The method as recited in claim 1, further comprising examining configuration data for the printing device that indicates the specified amount of time.

4. The method as recited in claim 1, wherein determining whether the print data has been stored on the storage device for at least the specified amount of time includes comparing an expiration value associated with the print data to a current date/time value.

5. The method as recited in claim 1, wherein the printing device is a multi-function peripheral.

6. The method as recited in claim 1, further including examining a file directory entry associated with the data to determine the expiration value for the data.

7. The method as recited in claim 1, wherein causing the print data to be deleted from the storage device includes overwriting the print data on the storage device with a specified value.

8. The method as recited in claim 1, further comprising:

encrypting the print data to generate encrypted print data; and

storing the encrypted print data on the storage device.

9. The method as recited in claim 1, further comprising:

receiving an identifier uniquely associated with the print data;

receiving a delete command and the identifier; and

in response to receiving the delete command, deleting the print data based upon the identifier.

10. A machine-readable medium for managing print data on a printing device, the machine-readable medium carrying instructions which, when executed by one or more processors, causes the performance of the steps of:

receiving print data at the printing device;

causing the print data to be stored on a storage device at the printing device;

the printing device retrieving, from the print data, data that indicates a specified amount of time that the print data is to be stored on the storage device at the printing device;

the printing device determining whether the print data has been stored on the storage device at the printing device for at least the specified amount of time; and

if the print data has been stored on the storage device at the printing device for at least the specified amount of time, then causing the print data to be deleted from the storage device at the printing device.

11. The computer-readable medium as recited in claim 10, further comprising one or more additional instructions which, when executed by the one or more processors, causes the performance of examining data contained in the print data that indicates the specified amount of time.

12. The computer-readable medium as recited in claim 10, further comprising one or more additional instructions which, when executed by the one or more processors, causes the performance of receiving and storing configuration data for the printing device that indicates the specified amount of time.

13. The computer-readable medium as recited in claim 10, wherein determining whether the print data has been stored on the storage device for at least the specified amount of time includes comparing an expiration value associated with the print data to a current date/time value.

14. The computer-readable medium as recited in claim 10, wherein the printing device is a multi-function peripheral.

15. The computer-readable medium as recited in claim 10, further comprising one or more additional instructions which, when executed by the one or more processors, causes the performance of examining a file directory entry associated with the data to determine the expiration value for the data.

16. The computer-readable medium as recited in claim 10, wherein causing the print data to be deleted from the storage device includes overwriting the print data on the storage device with a specified value.

17. The computer-readable medium as recited in claim 10, further comprising one or more additional instructions which, when executed by the one or more processors, causes the performance of:

providing a storage unit identifier to the registration authority,

receiving a registered identifier value from the registration authority, and

storing the registered identifier value.

18. An apparatus for managing print data on a printing device, the apparatus comprising a memory storing instructions which, when executed by one or more processors, causes the performance of the steps of:

receiving print data at the printing device;

causing the print data to be stored on a storage device at the printing device;

the printing device retrieving, from the print data, data that indicates a specified amount of time that the print data is to be stored on the storage device at the printing device;

the printing device determining whether the print data has been stored on the storage device at the printing device for at least the specified amount of time; and

if the print data has been stored on the storage device at the printing device for at least the specified amount of time, then causing the print data to be deleted from the storage device at the printing device.

19. The apparatus as recited in claim 18, wherein the memory further includes one or more additional instructions which, when executed by the one or more processors, causes the performance of examining data contained in the print data that indicates the specified amount of time.

20. The apparatus as recited in claim 18, wherein the memory further includes one or more additional instructions which, when executed by the one or more processors, causes the performance of receiving and storing configuration data for the printing device that indicates the specified amount of time.

21. The apparatus as recited in claim 18, wherein determining whether the print data has been stored on the storage device for at least the specified amount of time includes comparing an expiration value associated with the print data to a current date/time value.

22. The apparatus as recited in claim 18, wherein the printing device is a multi-function peripheral.

23. The apparatus as recited in claim 18, wherein the memory further includes one or more additional instructions which, when executed by the one or more processors, causes the performance of examining a file directory entry associated with the data to determine the expiration value for the data.

24. The apparatus as recited in claim 18, wherein causing the print data to be deleted from the storage device includes overwriting the print data on the storage device with a specified value.

25. The apparatus as recited in claim 18, wherein the memory further includes one or more additional instructions which, when executed by the one or more processors, causes the performance of:

providing a storage unit identifier to the registration authority,

receiving a registered identifier value from the registration authority, and

storing the registered identifier value.

26. A method for managing print data on a printing device, the method comprising the steps of:

receiving print data at the printing device;

causing the print data to be stored on a storage device at the printing device;

determining whether the print data has been processed at the printing device at least a specified number of times; and

if the print data has been processed at the printing device at least the specified number of times, then causing the print data to be deleted from the storage device.

27. The method as recited in claim 26, wherein each processing of the print data at the printing device includes printing one or more copies of an electronic document.

28. The method as recited in claim 26, further comprising examining data contained in the print data that indicates the specified number of times.

29. The method as recited in claim 26, further comprising examining configuration data for the printing device that indicates the specified number of times.

30. The method as recited in claim 26, further comprising receiving and storing configuration data for the printing device that indicates the specified number of times.

31. The method as recited in claim 26, wherein the printing device is a multi-function peripheral.

32. The method as recited in claim 26, wherein causing the print data to be deleted from the storage device includes overwriting the print data on the storage device with a specified value.

33. The method as recited in claim 26, further comprising:

encrypting the print data to generate encrypted print data; and

storing the encrypted print data on the storage device.

34. The method as recited in claim 26, further comprising:

receiving an identifier uniquely associated with the print data;

receiving a delete command and the identifier; and

in response to receiving the delete command, deleting the print data based upon the identifier.

35. A machine-readable medium for managing print data on a printing device, the machine-readable medium carrying instructions which, when executed by one or more processors, causes the performance of the steps of:

receiving print data at the printing device;

causing the print data to be stored on a storage device at the printing device;

determining whether the print data has been processed at the printing device at least a specified number of times; and

if the print data has been processed at the printing device at least the specified number of times, then causing the print data to be deleted from the storage device.

36. The machine-readable medium as recited in claim 35, wherein each processing of the print data at the printing device includes printing one or more copies of an electronic document.

37. The machine-readable medium as recited in claim 35, further comprising one or more additional instructions which, when executed by the one or more processors, causes the performance of examining data contained in the print data that indicates the specified number of times.

38. The machine-readable medium as recited in claim 35, further comprising one or more additional instructions which, when executed by the one or more processors, causes the performance of examining configuration data for the printing device that indicates the specified number of times.

39. The machine-readable medium as recited in claim 35, further comprising one or more additional instructions which, when executed by the one or more processors, causes the performance of receiving and storing configuration data for the printing device that indicates the specified number of times.

40. The machine-readable medium as recited in claim 35, wherein the printing device is a multi-function peripheral.

41. The machine-readable medium as recited in claim 35, wherein causing the print data to be deleted from the storage device includes overwriting the print data on the storage device with a specified value.

42. The machine-readable medium as recited in claim 35, further comprising one or more additional instructions which, when executed by the one or more processors, causes the performance of:

encrypting the print data to generate encrypted print data; and

storing the encrypted print data on the storage device.

43. The machine-readable medium as recited in claim 35, further comprising one or more additional instructions which, when executed by the one or more processors, causes the performance of:

receiving an identifier uniquely associated with the print data;

receiving a delete command and the identifier; and

in response to receiving the delete command, deleting the print data based upon the identifier.

44. An apparatus for managing print data on a printing device, the apparatus comprising a memory storing instructions which, when executed by one or more processors, causes the performance of the steps of:

receiving print data at the printing device;

causing the print data to be stored on a storage device at the printing device;

determining whether the print data has been processed at the printing device at least a specified number of times; and

if the print data has been processed at the printing device at least the specified number of times, then causing the print data to be deleted from the storage device.

45. The apparatus as recited in claim 44, wherein each processing of the print data at the printing device includes printing one or more copies of an electronic document.

46. The apparatus as recited in claim 44, wherein the memory further includes one or more additional instructions which, when executed by the one or more processors, causes the performance of examining data contained in the print data that indicates the specified number of times.

47. The apparatus as recited in claim 44, wherein the memory further includes one or more additional instructions which, when executed by the one or more processors, causes the performance of examining configuration data for the printing device that indicates the specified number of times.

48. The apparatus as recited in claim 44, wherein the memory further includes one or more additional instructions which, when executed by the one or more processors, causes the performance of receiving and storing configuration data for the printing device that indicates the specified number of times.

49. The apparatus as recited in claim 44, wherein the printing device is a multi-function peripheral.

50. The apparatus as recited in claim 44, wherein causing the print data to be deleted from the storage device includes overwriting the print data on the storage device with a specified value.

51. The apparatus as recited in claim 44, wherein the memory further includes one or more additional instructions which, when executed by the one or more processors, causes the performance of:

encrypting the print data to generate encrypted print data; and

storing the encrypted print data on the storage device.

52. The apparatus as recited in claim 44, wherein the memory further includes one or more additional instructions which, when executed by the one or more processors, causes the performance of:

receiving an identifier uniquely associated with the print data;

receiving a delete command and the identifier; and

in response to receiving the delete command, deleting the print data based upon the identifier.

53. An apparatus for managing print data on a printing device, the apparatus comprising:

one or more processors; and

a memory storing instructions which, when executed by one or more processors, cause;

receiving print data at the printing device,

at the printing device encrypting the print data to generate encrypted print data,

causing the encrypted print data to be stored on a storage device at the printing device,

receiving a specified amount of time at the printing device via a user interface of the printing device,

the printing device determining whether the encrypted print data has been stored on the storage device at the printing device for at least the specified amount of time, and

if the encrypted print data has been stored on the storage device at the printing device for at least the specified amount of time, then causing the encrypted print data to be deleted from the storage device at the printing device.