Method for attenuating the drying of ink from a printhead during periods of printhead inactivity

Patent metadata

Field	Value
Publication number	US-10933641-B2
Application number	US-202016908959-A
Country	US
Kind code	B2
Filing date	Jun 23, 2020
Priority date	Dec 18, 2018
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

An inkjet printer is configured with capping stations for storing printheads in the printer during periods of printer inactivity so the viscosity of the ink in the nozzles of the inkjets of the printheads does not increase significantly. Each capping station has a printhead receptacle that encloses a volume, a planar member configured to move between a first position at which the planar member is located within the printhead receptacle and a second position at which the planar member is external of the printhead receptacle, a first actuator operatively connected to the planar member, the first actuator being configured to move the planar member from the first position to the second position, and a controller configured to operate the first actuator to move the planar member from the first position to the second position to mate the planar member with a face of a printhead.

First claim

What is claimed is:

1. A method of operating a capping station for storing a printhead during a period of printer activity comprising:
operating with a controller a first actuator operatively connected to a planar member to move the planar member from a first position where the planar member rests on a plurality of members within a printhead receptacle that extend from a floor of the printhead receptacle to a second position where the planar member is outside the printhead receptacle to mate the planar member with a face of a printhead; and
operating with the controller a second actuator operatively connected to a printhead to move the printhead to the second position where the planar member can mate with the printhead.

2. The method of claim 1 wherein operation of the first actuator to move the planar member from the first position to the second position mates a hydrophilic surface of the planar member with the face of the printhead.

3. The method of claim 2 further comprising:
operating with the controller the first actuator to pivot an arm pivotably mounted at a first end to the floor of the printhead receptacle to move an applicator mounted to a second end of the arm against one end of the planar member to move the one end of the planar member to the second position and mate with the face of the printhead.

4. The method of claim 3 wherein the operation of the first actuator continues pivoting of the arm and presses a surface of the planar member that is opposite the hydrophilic surface of the planar member against the face of the printhead.

5. The method of claim 4 further comprising:
operating the second actuator to move the printhead away from the printhead receptacle so a flexible member having a first end fixedly mounted to the printhead receptacle and a second end fixedly mounted to a surface of the planar member that does not engage the printhead prevents an end of the planar member to which the flexible member is fixedly mounted from following the printhead as the printhead moves away from the printhead receptacle.

6. The method of claim 5 further comprising:
separating the planar member from the face of the printhead as the controller continues to operate the second actuator and move the printhead away from the printhead receptacle.

7. The method of claim 4 further comprising:
operating the printhead with the controller to emit ink onto the face of the printhead before the face of the printhead mates with the planar member.

8. The method of claim 7 further comprising:
operating the first actuator with the controller to pivot the arm at a speed that squeezes air bubbles from ink on the planar member as the applicator presses the planar member against the face of the printhead.

9. The method of claim 8 further comprising:
operating the second actuator with the controller to move the printhead away from the printhead receptacle so the arm can reach an apex of its pivoting movement.

10. The method of claim 9 further comprising:
operating the second actuator with the controller to move the printhead toward the printhead receptacle after the arm reaches an apex of its pivoting movement.

11. A method of operating a capping station for storing a printhead during a period of printer activity comprising:
operating a printhead with a controller to emit ink onto a face of the printhead;
operating with the controller a first actuator operatively connected to a planar member to move the planar member from a first position where the planar member is within a printhead receptacle to a second position where the planar member is outside the printhead receptacle to mate at least a portion of the planar member with the face of the printhead; and
operating with the controller a second actuator operatively connected to a printhead to move the printhead toward the printhead receptacle to the second position where the planar member can mate with the printhead.

12. The method of claim 11 wherein operation of the first actuator moves the planar member from the first position where the planar member rests on a plurality of members extending from a floor of the printhead receptacle to the second position outside of the printhead receptacle.

13. The method of claim 12 further comprising:
operating with the controller the first actuator, which is operatively connected to an arm that has one end rotatably connected to the floor of the printhead receptacle, to pivot the arm about the one end of the arm and move the planar member from the first position to the second position.

14. The method of claim 13 further comprising:
operating with the controller the second actuator to move the printhead away from the planar member at the second position to separate the planar member from the printhead by pulling taut a flexible member that is connected at a first end to one end of the planar member and that is connected at a second end to the floor of the printhead receptacle.

15. The method of claim 14 further comprising:
operating with the controller the first actuator to move the arm at a speed that squeezes air bubbles from the ink on the planar member as the pivoting of the arm urges the planar member against the face of the printhead.

16. The method of claim 15 further comprising:
operating the second actuator with the controller to move the printhead away from the printhead receptacle so the arm can reach an apex of its pivoting movement.

17. The method of claim 16 further comprising:
operating the second actuator with the controller to move the printhead toward the printhead receptacle after the arm reaches an apex of its pivoting movement.

18. A method of operating a capping station for storing a printhead during a period of printer activity comprising:
operating with a controller a first actuator operatively connected to an arm pivotably mounted at a first end to a floor of a printhead receptacle to rotate the arm about the first end to move a planar member from a first position where the planar member rests on a plurality of members within a printhead receptacle that extend from a floor of the printhead receptacle to a second position where the planar member is outside the printhead receptacle to mate the planar member with a face of the printhead;
operating with the controller a second actuator operatively connected to the printhead to move the printhead to the second position where the planar member mates with the face of the printhead.

19. The method of claim 18 further comprising:
operating the printhead with the controller to emit ink onto the face of the printhead before the face of the printhead mates with the planar member.

20. The method of claim 19 further comprising:
operating the first actuator with the controller to pivot the arm at a speed that squeezes air bubbles from ink on the planar member as the planar member mates with the printhead.

Assignees

• Xerox Corp

Inventors

• Vankouwenberg David A
• Hoover Linn C
• Levy Michael J
• Lefevre Jason M
• Liu Chu-Heng
• Mcconville Paul J
• Herrmann Douglas K
• Praharaj Seemit

Classifications

• B41J2/16508 Primary

  connected with the printer frame · CPC title

• B41J2/16523

  Waste ink transport from caps or spittoons, e.g. by suction (Collecting or collectors of waste ink B41J2/1721) · CPC title

• B41J2/17556

  Means for regulating the pressure in the cartridge · CPC title

• B41J2/17596

  Ink pumps, ink valves · CPC title

• B41J2/16535

  using wiping constructions (B41J2/16552 takes precedence) · CPC title