Handheld and/or mountable fluid-ejection device receptive to tip containing fluid and fluid-ejection mechanism

• US 7,935,317 B2
• Filed: 09/14/2006
• Issued: 05/03/2011
• Est. Priority Date: 09/14/2006
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Benjamin, Trudy, Nielsen, Jeffrey A., Seu, Preston, Kent, Blair M., Anderson, Ronald R., Lowe, David, Axtell, James P., Giri, Manish
• Primary Examiner(s): Warden; Jill
• Assistant Examiner(s): COLE, MONIQUE T
• Application Number:
  US11/532,046
• Publication Number:
  US 20080068434A1
• Time in Patent Office: 1,692 Days
• Field of Search: 422/100, 422/112, 422/500, 422/501, 422/509, 422/511, 422/521, 422/522, 422/524, 422/525, 738/640.1
• US Class Current: 422/500
• CPC Class Codes: B41J 2/16535 using wiping constructions B41J2/16552 takes precedence
• CPC Class Codes: B41J 2/175 Ink supply systems ; Circuit parts therefor
• CPC Class Codes: B41J 2/17546 electronically
• CPC Class Codes: B41J 3/36 for portability , i.e. hand-held printers or laptop printers B41J3/4075 takes precedence

Abstract

A fluid-ejection device includes a handheld and/or mountable enclosure, a pneumatic fitting, an electrical connector, and a controller. The pneumatic fitting extends from and/or through the enclosure and is receptive to placement of a tip thereon. The tip contains a supply of fluid, a fluid-ejection mechanism, and an electrical connector for the fluid-ejection mechanism. The electrical connector extends from and/or through the enclosure and is receptive to electrical coupling of the electrical connector of the tip. The controller is situated within the enclosure to cause the tip to eject the fluid via the electrical coupling of the electrical connectors of the tip and the fluid-ejection device.

Claims

1. A fluid-ejection device comprising:

a handheld and/or mountable enclosure;

a pneumatic fitting extending from and/or through the enclosure;

a tip onto which the pneumatic fitting is removably receptive to placement thereon, the tip containing a supply of fluid, a fluid-ejection mechanism, and an electrical connector for the fluid-ejection mechanism;

an electrical connector extending from and/or through the enclosure and to electrically couple the electrical connector of the tip; and

,

a controller situated within the enclosure to cause the tip to eject the fluid via the electrical coupling of the electrical connectors of the tip and the fluid-ejection device.

2. The fluid-ejection device of claim 1, further comprising one or more of:

a gas channel that is one or more of;

externally exposed at an opening of the enclosure and pneumatically connected to the tip via the pneumatic fitting; and

,

pneumatically connectable to a pump to force gas through the gas channel and into the tip to create positive pressure against the fluid contained within the tip and/or to force gas through the gas channel from the tip to create negative pressure against the fluid contained within the tip; and

,

a pressure sensor pneumatically connected to the gas channel to measure pressure against the fluid contained within the tip.

3. The fluid-ejection device of claim 1, further comprising a hollow needle ending in an opening and inserted through the pneumatic fitting, the needle to pierce through a septum of the tip upon placement of the tip on the pneumatic fitting.

4. The fluid-ejection device of claim 1, further comprising an ejection mechanism disposed within the enclosure and including a corresponding control extending through the enclosure, such that actuation of the corresponding control causes the tip to be ejected from the pneumatic fitting and the electrical connector of the tip to electrically decouple from the electrical connector of the fluid-ejection device, without a user having to directly pull or pry the tip.

5. The fluid-ejection device of claim 1, further comprising one or more of:

a display by which the controller displays information regarding the tip placed on the pneumatic fitting in response to the controller detecting the information via the electrical coupling of the electrical connectors of the tip and the fluid-ejection device; and

,

one or more controls by which the fluid-ejection device is user-controllable on a stand-alone basis without being coupled to another device, the controller responsive to user actuation of the controls to cause the tip to eject the fluid.

6. The fluid-ejection device of claim 1, further comprising an interface at the enclosure to communicatively couple the fluid-ejection device to another device to control ejection of the fluid by the tip via the controller, and/or to receive information regarding the tip placed on the pneumatic fitting in response to the controller detecting the information via the electrical coupling of the electrical connectors of the tip and the fluid-ejection device.

7. The fluid-ejection device of claim 1, wherein the pneumatic fitting remains free of contact with the fluid contained within the tip, including during ejection of the fluid by the tip as controlled by the controller.

8. The fluid-ejection device of claim 1, wherein the enclosure comprises:

a first part and a second part between which a printed circuit board is disposed, the electrical connector and the controller disposed on the printed circuit board,

wherein the second part comprises one or more of;

a slot through which the electrical connector extends and capped by a pair of alignment ribs;

an opening through which the pneumatic fitting extends such that the alignment ribs align the electrical connector relative to the pneumatic fitting so that placement of the tip on the pneumatic fitting correspondingly results in secure electrical coupling of the electrical connector of the tip to the electrical connector of the fluid-ejection device;

one or more anti-rotation ribs at least substantially parallel to the alignment ribs and cooperating with a corresponding anti-rotation surface of the tip to prevent rotation of the tip on the pneumatic fitting while the tip is placed on and/or is being placed on the pneumatic fitting; and

,

a beveled edge between the alignment ribs to at least partially ensure the secure electrical coupling of the electrical connector of the tip to the electrical connector of the fluid-ejection device.

9. The fluid-ejection device of claim 1, wherein the fluid-ejection device is receptive to a plurality of different types of tips, the tips varying in nozzle size and/or nozzle number,

wherein the tips are fabricated from a common set of materials, such that the fluid is certified against the common set of materials to permit the fluid to be ejected from all the different types of tips to determine which of the tips is most appropriate for ejection of the fluid at a desired volume.