Liquid ejecting head and liquid ejecting apparatus usable therewith

• US 8,109,610 B2
• Filed: 08/11/2009
• Issued: 02/07/2012
• Est. Priority Date: 06/02/2004
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Toge, Yoshiyuki, Imanaka, Yoshiyuki
• Primary Examiner(s): Luu, Matthew
• Assistant Examiner(s): LEGESSE, HENOK D
• Application Number:
  US12/539,215
• Publication Number:
  US 20090295874A1
• Time in Patent Office: 910 Days
• Field of Search: 347/50, 347/58, 347/59, 347/87
• US Class Current: 347/50
• CPC Class Codes: B41J 2/14072 Electrical connections, e.g. details on electrodes, connecting the chip to the outside...
• CPC Class Codes: B41J 2/17526 Electrical contacts to the cartridge
• CPC Class Codes: B41J 2/17546 electronically

Abstract

A liquid ejecting head for ejection liquid includes an electric wiring member including a plurality of contact pads which are electrically contactable to a liquid ejecting apparatus; a storing element for storing individual information; and a liquid ejection member, provided with an ejection outlet, for ejecting the liquid using electric energy supplied through a part of the plurality of contact pads. The contact pads include an array of information contact pads electrically connected with the storing element, a voltage source contact pad for supplying the electric energy and a grounding contact pad. Directly adjacent to each of front and rear sides of the information contact pads constituting the array, the voltage source contact pad or the grounding contact pad is disposed.

Claims

1. A liquid ejecting head mountable to a liquid ejecting apparatus, said liquid ejecting head comprising:

a recording element for generating energy for effecting recording by ejecting liquid in response to a driving voltage applied thereto;

an electric power line, connected to said recording element, for supplying the driving voltage to said recording element;

a grounding electrical line, connected to said recording element, for electrically grounding said recording element;

a storing element for storing individual information; and

a plurality of head electrical contacts electrically connectable to electrical contacts provided in the apparatus when said head is mounted to the apparatus, said head electrical contacts including a plurality of first electrical contacts, each connected electrically with said storing element, and a plurality of second electrical contacts, each connected electrically with said recording element through said electric power line or said grounding electrical line,

wherein adjacent to one side of each of said first electrical contacts, at least one of said second electrical contacts is disposed without any of said first electrical contacts interposed therebetween, and adjacent to the other side of each of said first electrical contacts which is opposite the one side, at least one of said second electrical contacts is disposed without any of said first electrical contacts interposed therebetween.

2. A liquid ejecting head according to claim 1, wherein said first electrical contacts form a first contact array, and said second electrical contacts form second contact arrays, with the first contact array interposed between the second contact arrays.

3. A liquid ejecting head according to claim 1, wherein said first electrical contacts form first contact arrays, and said second electrical contacts form second contact arrays, with each of the first contact arrays directly interposed between the second contact arrays.

4. A liquid ejecting head according to claim 1, wherein the information is indicated by presence or absence of an electrical interconnection in said storing element.

5. A liquid ejecting head according to claim 1, wherein said storing element comprises a fuse disconnected upon an application of an external electrical signal.

6. A liquid ejecting head according to claim 1, wherein said storing element comprises a resistance element.

7. A liquid ejecting head according to claim 1, further comprising a liquid container for storing liquid.

8. A liquid ejecting apparatus usable with a liquid ejecting head for ejecting liquid, said apparatus comprising:

a liquid ejecting head according to claim 1; and

a carriage reciprocable in a predetermined direction while carrying said liquid ejecting head.

9. A liquid ejecting head according to claim 2, wherein said first electrical contacts are directly interposed between said second electric contacts in a direction of the first contact array and in a direction of the second contact array which crosses with the direction of the first contact array.

10. A liquid ejecting head according to claim 2, wherein the first contact array does not comprise any of said second electrical contacts.

11. A liquid ejecting head according to claim 2, wherein the second contact arrays do not comprise any of said first electrical contacts.