Printhead assembly

• US 7,543,924 B2
• Filed: 03/10/2005
• Issued: 06/09/2009
• Est. Priority Date: 07/15/1997
• Status: Expired due to Fees

• Current Assignee: Memjet Technology Ltd. (Memjet Limited)
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia
• Primary Examiner(s): Huffman; Julian D
• Application Number:
  US11/075,918
• Publication Number:
  US 20050157108A1
• Time in Patent Office: 1,552 Days
• Field of Search: 347/20, 347/49, 347/65, 347/42, 347/85
• US Class Current: 347/85
• CPC Class Codes: B41J 2/05 produced by the application of heat
• CPC Class Codes: B41J 2/14 Structure thereof only for on-demand ink jet heads
• CPC Class Codes: B41J 2/14427 Structure of ink jet print heads with thermal bend detached actuators
• CPC Class Codes: B41J 2/155 for line printing
• CPC Class Codes: B41J 2/16 Production of nozzles
• CPC Class Codes: B41J 2/1623 bonding and adhesion
• CPC Class Codes: B41J 2/1626 etching
• CPC Class Codes: B41J 2/1628 dry etching
• CPC Class Codes: B41J 2/1629 wet etching
• CPC Class Codes: B41J 2/1631 photolithography
• CPC Class Codes: B41J 2/1632 machining
• CPC Class Codes: B41J 2/1635 dividing the wafer into individual chips
• CPC Class Codes: B41J 2/1637 molding
• CPC Class Codes: B41J 2/1639 sacrificial molding
• CPC Class Codes: B41J 2/1642 thin film formation by CVD [chemical vapor deposition]
• CPC Class Codes: B41J 2/1643 thin film formation by plating
• CPC Class Codes: B41J 2/1645 thin film formation by spincoating
• CPC Class Codes: B41J 2/1646 thin film formation by sputtering
• CPC Class Codes: B41J 2/1648 Production of print heads with thermal bend detached actuators
• CPC Class Codes: B41J 2/16585 for paper-width or non-reciprocating print heads
• CPC Class Codes: B41J 2/175 : Ink supply systems ; Circuit parts therefor
• CPC Class Codes: B41J 2/17503 : Ink cartridges
• CPC Class Codes: B41J 2/17509 : Whilst mounted in the printer
• CPC Class Codes: B41J 2/17513 : Inner structure
• CPC Class Codes: B41J 2/1752 : Mounting within the printer
• CPC Class Codes: B41J 2/17596 : Ink pumps, ink valves
• CPC Class Codes: B41J 2002/041 : Electromagnetic transducer
• CPC Class Codes: B41J 2002/14362 : Assembling elements of heads
• CPC Class Codes: B41J 2202/21 : Line printing
• CPC Class Codes: B82Y 30/00 : Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: G06F 21/79 : in semiconductor storage media, e.g. directly-addressable memories
• CPC Class Codes: G06F 21/86 : Secure or tamper-resistant housings
• CPC Class Codes: G06F 2221/2129 : Authenticate client device independently of the user
• CPC Class Codes: G06K 1/121 : by printing code marks applying code marks to labels B65C9/46; marking or coding completed packages B65B61/26
• CPC Class Codes: G06K 19/06037 : multi-dimensional coding
• CPC Class Codes: G06K 19/073 : Special arrangements for circuits, e.g. for protecting identification code in memory protection against unauthorised use of computer memory G06F12/14
• CPC Class Codes: G06K 7/14 : using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence
• CPC Class Codes: G06K 7/1417 : 2D bar codes
• CPC Class Codes: G11C 11/56 : using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
• CPC Class Codes: H04N 1/2112 : using still video cameras
• CPC Class Codes: H04N 1/2154 : the still video camera incorporating a hardcopy reproducing device, e.g. a printer
• CPC Class Codes: H04N 2101/00 : Still video cameras
• CPC Class Codes: H04N 23/00 : Cameras or camera modules comprising electronic image sensors; Control thereof
• CPC Class Codes: H04N 5/2628 : Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation

Abstract

The present invention relates to a printhead assembly. The printhead assembly comprises an ink supply module for supplying at least one ink. There is also provided a body defining at least one ink channel. In use, the body interfaces with the ink supply module so that a respective ink is supplied from the ink supply module to a corresponding channel. The printhead assembly also comprises a printhead which, in turn, comprises at least one set of ink inlets. In use, the printhead interfaces with the body so that a respective ink is supplied from a respective channel to a corresponding set of ink inlets. A printing device comprising the printhead assembly is also provided.

Claims

1. A printhead assembly comprising:

a body having;

a first side having first and second channels which are separately defined to be individually connected to respective first and second ink supplies;

a second side opposed to the first side, said second side having third and fourth channels which are separately defined to be individually connected to a third ink supply;

a recess separately defined between the third and fourth channels in the second side;

a plurality of passages defined through the body from the third and fourth channels in the second side to the first side; and

a plurality of ink feed openings defined through the body from the first side to the recess in the second side, a first group of the ink feed openings being individually connected to the first channel, a second group of the ink feed openings being individually connected to the second channel, and a third group of the ink feed openings being individually connected to the third and fourth channels via the passages; and

a printhead having first, second and third groups of ink inlets connected to ink ejection nozzles, the printhead being received in the recess of the body so that the first, second and third groups of ink inlets respectively interface with the first, second and third groups of ink feed openings.

2. A printing device comprising the printhead assembly of claim 1.