Ink jet recovery process initiated by an information processing apparatus

• US 6,189,996 B1
• Filed: 12/20/1995
• Issued: 02/20/2001
• Est. Priority Date: 02/13/1990
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Shimamura, Yoshiyuki, Kaneko, Masanori
• Primary Examiner(s): BRASE, SANDRA L
• Application Number:
  US08/575,462
• Time in Patent Office: 1,889 Days
• Field of Search: 347/23, 347/3, 347/5, 347/35, 347/30, 347/108, 347/22
• US Class Current: 347/23
• CPC Class Codes: B41J 2/1652 by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head

Abstract

A recording apparatus includes a recording head having an ink ejection outlet for ejecting ink in response to recording data received from a main body of an information processing apparatus. A recover operation is performed on the recording head for restoring ink ejection and for preventing ink ejection failure, in response to a command from the main body of the information processing apparatus.

Claims

1. An ink jet apparatus comprising:

an ink jet printer for performing a printing operation to form a predetermined image on a recording medium by discharging ink in response to an image forming signal provided to a printer controlling portion of said ink jet printer; and

an information processing apparatus connected to said ink jet printer and including a keyboard and a processing device for generating information used to create the image forming signal and for generating a recovery signal different from the image forming signal and supplied to said printer controlling portion to effect a recovery operation for maintaining an ink discharging state of said ink jet printer,

wherein the information processing apparatus counts an elapsed time from a time when a previous recovery operation was performed, at least one of a content and number of times the recovery operation is performed being varied by the recovery signal based on the elapsed time.

2. An ink jet apparatus according to claim 1, wherein the recovery operation is a preliminary ejection operation for ejecting from said ink jet printer ink which is not directly used for recording.

3. An ink jet apparatus according to claim 1, wherein said the recovery operation is a sucking operation in which ink is sucked out of an ejection outlet of said ink jet printer by use of a cap covering the ejection outlet.

4. An ink jet apparatus according to claim 1, wherein the recovery operation is a pressuring operation in which ink retained in a passage communicating with an ejection outlet of said ink jet printer is pressed and discharged from the ejection outlet.

5. An ink jet apparatus according to claim 1, wherein the recovery operation is a wiping operation in which an ejection outlet of said ink jet printer and the periphery thereof are wiped by a blade.

6. An ink jet apparatus according to claim 1, wherein power enabling the counting of the elapsed time is backed up by a back-up power source.

7. An ink jet apparatus according to claim 6, wherein the back-up power source is a battery.

8. An ink jet apparatus according to claim 1, wherein said information processing apparatus is formed integrally with said ink jet printer.

9. An ink jet apparatus according to claim 1, wherein said information processing apparatus is formed separately form said ink jet printer.

10. An ink jet apparatus according to claim 1, wherein said ink jet printer includes an ink jet head with electrothermal transducers for generating thermal energy for discharging the ink from an ejection outlet by generating film boiling in the ink.

11. An ink jet apparatus according to claim 1, wherein said information processing apparatus is a computer.

12. An ink jet apparatus according to claim 1, wherein said information processing apparatus is an electronic typewriter.

13. An ink jet apparatus according to claim 1, wherein said information processing apparatus is a word processor.

14. An ink jet apparatus according to claim 1, wherein said information processing apparatus is facsimile equipment.

15. An ink jet apparatus according to claim 1, wherein said information processing apparatus is a copying machine.

16. An ink jet apparatus according to claim 1, wherein the recovery operation is performed when a power is turned on.

17. An ink jet apparatus according to claim 1, wherein the recovery operation is performed when a printing operation by said ink jet printer is started.

18. An ink jet apparatus comprising:

an ink jet printer for forming a predetermined image on a recording medium by discharging an ink in response to an image forming signal provided to a printer controlling portion of said ink jet printer; and

an information processing apparatus connected to said ink jet printer and including (a) timer means for counting an elapsed time, (b) a keyboard, (c) a processing device for generating information used to create the image forming signal and for generating a recovery signal different from the image forming signal and supplied to said printer controlling portion to effect a recovery operation for maintaining an ink discharging state of said ink jet printer, and (d) a back-up power source for said timer means,

wherein a command from said timer means based on an elapsed time from a time when a previous recovery operation is performed varies at least one of a content and number of times the recovery operation is performed.

19. An ink jet apparatus according to claim 18, wherein said information processing apparatus is formed integrally with said ink jet printer.

20. An ink jet apparatus according to claim 18, wherein said information processing apparatus is formed separately from said ink jet printer.

21. An ink jet apparatus according to claim 18, wherein said ink jet printer includes an ink jet head with electrothermal transducers for generating thermal energy for discharging the ink from an ejection outlet by generating film boiling in the ink.

22. An ink jet apparatus according to claim 18, wherein said information processing apparatus is a computer.

23. An ink jet apparatus according to claim 18, wherein said information processing apparatus is an electronic typewriter.

24. An ink jet apparatus according to claim 18, wherein said information processing apparatus is a word processor.

25. An ink jet apparatus according to claim 18, wherein said information processing apparatus is facsimile equipment.

26. An ink jet apparatus according to claim 18, wherein said information processing apparatus is a copying machine.

27. An ink jet apparatus according to claim 18, wherein the recovery operation is performed when a power is turned on.

28. An ink jet apparatus according to claim 18, wherein the recovery operation is performed when a printing operation by said ink jet printer is started.

29. An information processing apparatus comprising:

means for connecting the information processing apparatus to an ink jet printer for performing a printing operation to form a predetermined image on a recording medium by discharging ink in response to an image forming signal provided to a printer controlling portion of the ink jet printer;

a keyboard; and

a processing device for generating information used to create the image forming signal and for generating a recovery signal different from the image forming signal and supplied to said printer controlling portion to effect a recovery operation for maintaining an ink discharging state of the ink jet printer,

wherein the information processing apparatus counts an elapsed time from a time when a previous recovery operation was performed, at least one of a content and number of times the recovery operation is performed being varied by the recovery signal based on the elapsed time.

30. An information processing apparatus according to claim 29, wherein power enabling the counting of elapsed time is backed up by a back-up power source.

31. An information processing apparatus according to claim 30, wherein the back-up power source is a battery.

32. An information processing apparatus according to claim 29, wherein the information processing apparatus is comprised by a computer.

33. An information processing apparatus according to claim 29, wherein the information processing apparatus is comprised by a word processor.

34. An information processing apparatus according to claim 29, wherein the information processing apparatus is comprised by facsimile equipment.

35. An information processing apparatus according to claim 29, wherein the information processing apparatus is comprised by a copying machine.

36. An ink jet printer comprising:

means for performing a printing operation to form a predetermined image on a recording medium by discharging ink in response to an image forming signal and for performing a recovery operation for maintaining ink discharging state of the ink jet printer in response to a recovery signal different from the image forming signal;

a printer controlling portion for accepting the image forming signal and the recovery signal; and

means for connecting the ink jet printer to an information processing apparatus having a keyboard and a processing device for generating information used to create the image forming signal and for generating the recovery signal,

wherein the information processing apparatus counts an elapsed time from a time when a previous recovery operation was performed, at least one of a content and number of times the recovery operation is performed being varied by the recovery signal based on the elapsed time.

37. An ink jet printer according to claim 36, wherein the recovery operation is a preliminary ejection operation for ejecting from the ink jet printer ink which is not directly used for recording.

38. An ink jet printer according to claim 36, wherein the recovery operation is a sucking operation in which ink is sucked out of an ejection outlet of the ink jet printer using a cap covering the ejection outlet.

39. An ink jet printer according to claim 36, wherein the recovery operation is a pressuring operation in which ink retained in a passage communicating with an ejection outlet of the ink jet printer is pressed and discharged from the ejection outlet.

40. An ink jet printing according to claim 36, wherein the recovery operation is a wiping operation in which an ejection outlet of the ink jet printer and the periphery thereof are wiped by a blade.

41. An ink jet printer according to claim 36, further including an ink jet head with electrothermal transducers generating thermal energy for discharging the ink from the ejection outlet by generating film boiling in the ink.

42. An ink jet printer according to claim 36, wherein the printer is an electronic typewriter.

43. An ink jet apparatus comprising:

an ink jet printer for performing a printing operation to form a predetermined image on a recording medium by discharging ink in response to an image forming signal provided to a printer controlling portion of said ink jet printer; and

an information processing apparatus connected to said ink jet printer and including a display and a processing device for generating information used to create the image forming signal and for generating a recovery signal different from the image forming signal and supplied to said printer controlling portion to effect a recovery operation for maintaining an ink discharging state of said ink jet printer,

wherein the information processing apparatus counts an elapsed time from a time when a previous recovery operation was performed, at least one of a content and number of times the recovery operation is performed being varied by the recovery signal based on the elapsed time.

44. An ink jet apparatus comprising:

an ink jet printer for forming a predetermined image on a recording medium by discharging an ink in response to an image forming signal provided to a printer controlling portion of said ink jet printer; and

an information processing apparatus connected to said ink jet printer and including (a) timer means for counting an elapsed time, (b) a display, (c) a processing device for generating information used to create the image forming signal and for generating a recovery signal different from the image forming signal and supplied to said printer controlling portion to effect a recovery operation for maintaining an ink discharging state of said ink jet printer, and (d) a back-up power source for said timer means,

wherein a command from said timer means based on an elapsed time from a time when a previous recovery operation is performed varies at least one of a content and number of times the recovery operation is performed.

45. An information processing apparatus comprising:

means for connecting the information processing apparatus to an ink jet printer for performing a printing operation to form a predetermined image on a recording medium by discharging ink in response to an image forming signal provided to a printer controlling portion of the ink jet printer;

a display; and

a processing device for generating information used to create the image forming signal and for generating a recovery signal different from the image forming signal and supplied to said printer controlling portion to effect a recovery operation for maintaining an ink discharging state of the ink jet printer,

wherein the information processing apparatus counts an elapsed time from a time when a previous recovery operation was performed, at least one of a content and number of times the recovery operation is performed being varied by the recovery signal based on the elapsed time.

46. An ink jet printer comprising:

means for performing a printing operation to form a predetermined image on a recording medium by discharging ink in response to an image forming signal and for performing a recovery operation for maintaining ink discharging state of the ink jet printer in response to a recovery signal different from the image forming signal;

a printer controlling portion for accepting the image forming signal and the recovery signal; and

means for connecting the ink jet printer to an information processing apparatus having a display and a processing device for generating information used to create the image forming signal and for generating the recovery signal,

wherein the information processing apparatus counts an elapsed time from a time when a previous recovery operation was performed, at least one of a content and number of times the recovery operation is performed being varied by the recovery signal based on the elapsed time.

47. An ink jet recording apparatus connected to an information processing apparatus having a keyboard, said ink jet recording apparatus comprising:

a recording head including ink ejection outlets for ejecting ink based on recording data received from the information processing apparatus as a supply source of the recording data;

means for receiving a command different from the recording data from the information recording apparatus; and

means for performing a recover operation on said recording head for restoring ink ejection and for preventing ink ejection failure in response to the command from the information processing apparatus.

48. An information processing apparatus connected to an ink jet recording apparatus having a recording head including ink ejection outlets for ejecting ink, said information processing apparatus comprising:

means for sending recording data to the ink jet recording apparatus, the ink ejection outlets ejecting ink based on the recording data sent from said information processing apparatus;

a keyboard; and

means for sending a command different from the recording data to the ink jet recording apparatus, the command commanding the ink jet recording apparatus to perform a recover operation on the recording head for restoring ink ejection and for preventing ink ejection failure.

49. An information processing apparatus connected to an ink jet recording apparatus having a recording head including ink ejection outlets for ejecting ink, said information processing apparatus comprising:

means for sending recording data to the ink jet recording apparatus, the ink ejection outlets ejecting ink based on the recording data sent from said information processing apparatus;

a display; and

means for sending a command different from the recording data to the ink jet recording apparatus, the command commanding the ink jet recording apparatus to perform a recover operation on the recording head for restoring ink ejection and for preventing ink ejection failure.

50. An ink jet recording apparatus connected to an information processing apparatus having a display, said ink jet recording apparatus comprising:

a recording head including ink ejection outlets for ejecting ink based on recording data received from the information processing apparatus as a supply source of the recording data;

means for receiving a command different from the recording data from the information recording apparatus; and

means for performing a recover operation on said recording head for restoring ink ejection and for preventing ink ejection failure in response to the command from the information processing apparatus.