IP Library Patent Application 12719826
Patent Application
App. No. 12/719,826

PRINTER HAVING GEARED MEDIA PICK-UP ROLLER

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Quick Facts
Patent No.
US None
App. No.
12/719,826
Abstract

A printer is provided having a sheet media transport mechanism, a pick-up roller arranged to be rotated so as to contact and pick-up sheet media from a sheet media supply, and a gear assembly for communicating a driving force of a motor to the pick-up roller to rotate the pick-up roller. A first gear of the gear assembly is directly coupled with a second gear of the gear assembly which is concentric with the pick-up roller. The first gear is configured to disengage from the second gear substantially at the point of delivery of a leading edge of the picked sheet media to the sheet media transport mechanism so as to cease communication of the driving force of the motor to the pick-up roller.

Claims (12)

1 . A printer comprising:

a sheet media transport mechanism;

a pick-up roller arranged to be rotated so as to contact and pick-up sheet media from a sheet media supply and

a gear assembly for communicating a driving force of a motor to the pick-up roller to rotate the pick-up roller,

wherein a first gear of the gear assembly is directly coupled with a second gear of the gear assembly which is concentric with the pick-up roller, the first gear being configured to disengage from the second gear substantially at the point of delivery of a leading edge of the picked sheet media to the sheet media transport mechanism so as to cease communication of the driving force of the motor to the pick-up roller.

2 . A printer according to claim 1 , wherein the gear assembly is configured to deliver a gearing ratio of 50:1 from the motor to the pick-up roller.

3 . A printer according to claim 1 , wherein the motor is configured to deliver a maximum torque of 2 mNm.

4 . A printer according to claim 1 , wherein the first gear re-engages with the second gear substantially at the point of a trailing edge of the picked sheet media leaving contact with the pick-up roller.

5 . A printer according to claim 4 , wherein the first gear is pivotable relative to the second gear so as to disengage and re-engage therewith.

6 . A printer according to claim 1 , wherein the pick-up roller incorporates a grip material for gripping the sheet media.

7 . A printer according to claim 6 , wherein the grip material is rubber.

8 . A printer according to claim 7 , wherein the sheet media is 100 mm by 150 mm photo paper.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2012
From: SILVERBROOK RESEARCH PTY. LIMITED AND CLAMATE PTY LIMITED
To: ZAMTEC LIMITED
Reel/Frame 028524/0486 →
CORRECTIVE ASSIGNMENT TO CORRECT THE SPELLING OF ASSIGNOR 7 TO READ PAUL IAN MACKEY PREVIOUSLY RECORDED ON REEL 024047 FRAME 0251. ASSIGNOR(S) HEREBY CONFIRMS THE CORRECT SPELLING APPEARS ON PAGE 7 OF ASSIGNMENTS. Recorded May 23, 2010
From: SILVERBROOK, KIA; KING, TOBIN ALLEN; TOW, GREGORY MICHAEL; BERTOK, ATILLA; DYER, GEOFFREY PHILIP; BRICE, ROBERT JOHN; MACKEY, PAUL IAN; HIBBARD, CHRISTOPHER
To: SILVERBROOK RESEARCH PTY LTD
Reel/Frame 024426/0756 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 8, 2010
From: SILVERBROOK, KIA; KING, TOBIN ALLEN; TOW, GREGORY MICHAEL; BERTOK, ATTILA; DYER, GEOFFREY PHILLIP; BRICE, ROBERT JOHN; MACKEY, PETER IAN; HIBBARD, CHRISTOPHER
To: SILVERBROOK RESEARCH PTY LTD
Reel/Frame 024047/0251 →