Print media transport assembly

• US 7,325,918 B2
• Filed: 02/24/2005
• Issued: 02/05/2008
• 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): Do; An H.
• Application Number:
  US11/064,013
• Publication Number:
  US 20050157144A1
• Time in Patent Office: 1,076 Days
• Field of Search: 347/101, 347/104, 400/648, 400/649, 271/188
• US Class Current: 347/104
• CPC Class Codes: B41J 2/01 Ink jet
• CPC Class Codes: B41J 2/04 generating single droplets or particles on demand
• 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 2/1601 Production of bubble jet print heads B41J2/1606, B41J2/162 take precedence
• 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 2/17503 : Ink cartridges
• CPC Class Codes: B41J 2/17513 : Inner structure
• CPC Class Codes: B41J 2/17596 : Ink pumps, ink valves
• CPC Class Codes: B41J 2002/041 : Electromagnetic transducer
• CPC Class Codes: B41J 2002/14346 : Ejection by pressure produced by thermal deformation of ink chamber, e.g. buckling
• 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 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 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

A printer of a type having a page width printhead includes opposed first and second platens. Spanning the space between the platens is a drive roller that is arranged to urge portions of print media supported by the first and second platens in opposite directions in use. A second roller is arranged along corresponding edges of the platens and serves to redirect the print media from one platen to the other during its operation. A brush is located upstream of the printhead about the second roller to remove debris from the printhead in use. Downstream of the printhead there is a located a printmedia severing assembly to cut printed media into discrete pages.

Claims

1. A printer including:

opposed first and second fixed platens separated by an intermediate space;

a drive roller located in the intermediate space, said drive roller spanning from one end to the other end of the intermediate space and arranged to urge portions of print media supported by the first and second platens in opposite directions along the platens; and

a page width print head located across a path of the print media and positioned to print onto a portion of the print media supported by said first platen.

2. A printer according to claim 1, including a second roller disposed along corresponding edges of the first and second platen and arranged to direct the print media from the first platen to the second platen.

3. A printer according to claim 2, including a brush for removing debris from the print media in use, wherein the brush is disposed across the path of the print media and located upstream of the page width print head.

4. A printer according to claim 2, wherein the brush is located adjacent the second roller.

5. A printer according to claim 2, wherein the second roller comprises a drive roller.

6. A printer according to claim 3, including a print media severing assembly located downstream of the page width print head.

7. A printer according to claim 6, wherein the print media severing assembly includes a blade arranged to interact with an edge of the second platen during a severing operation.

8. A printer including:

opposed first and second platens fixed separated by an intermediate space;

a drive roller located in the intermediate space, said drive roller spanning from one end to the other end of the intermediate space and arranged to urge portions of print media supported by the first and second platens in opposite directions along the platens;

a second roller disposed along corresponding edges of the first and second platen and arranged to direct the print media from the first platen to the second platen;

a page width printhead located across a path of the print media and positioned to print onto a portion of the print media supported by said first platen; and

a brush for removing debris from the print media in use, wherein the brush is disposed across the path of the print media and located upstream of the page width printhead.