Medium supplying apparatus, method for driving medium supplying apparatus, computer readable medium including drive-control program and recording device

• US 7,726,804 B2
• Filed: 10/21/2005
• Issued: 06/01/2010
• Est. Priority Date: 10/21/2004
• Status: Expired due to Fees

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Negishi, Satoshi, Okuhara, Katsumi, Takeuchi, Atsuhiko, Horie, Naoki
• Primary Examiner(s): Meier; Stephen D
• Assistant Examiner(s): Liang; Leonard S
• Application Number:
  US11/254,755
• Publication Number:
  US 20060098072A1
• Time in Patent Office: 1,684 Days
• Field of Search: 347/104, 347/16, 347/101, 347/5
• US Class Current: 347/104
• CPC Class Codes: B41J 13/103 for the sheet feeding section
• CPC Class Codes: B65H 2220/01 indicating an entity as a function of which control, adjustment or change is performed, i.e. input
• CPC Class Codes: B65H 2220/02 indicating an entity which is controlled, adjusted or changed by a control process, i.e. output
• CPC Class Codes: B65H 2220/03 indicating an entity which is measured, estimated, evaluated, calculated or determined but which does not constitute an entity which is adjusted or changed by the control process per se
• CPC Class Codes: B65H 2220/04 for distinguishing adjusting from controlling, i.e. manual adjustments
• CPC Class Codes: B65H 2220/11 indicating that the input or output entities exclusively relate to machine elements
• CPC Class Codes: B65H 2404/1421 rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
• CPC Class Codes: B65H 2511/20 Location in space
• CPC Class Codes: B65H 2511/414 of mode of operation
• CPC Class Codes: B65H 2511/416 of material
• CPC Class Codes: B65H 2513/50 Timing
• CPC Class Codes: B65H 2513/512 Starting; Stopping
• CPC Class Codes: B65H 2513/52 Age; Duration; Life time or chronology of event
• CPC Class Codes: B65H 2557/64 for detecting type or properties of handled material
• CPC Class Codes: B65H 3/0607 cooperating with means for automatically separating the pile from roller or rotary separator after a separation step
• CPC Class Codes: B65H 3/0615 reciprocating and rotatable in one direction only
• CPC Class Codes: B65H 3/0669 Driving devices therefor
• CPC Class Codes: B65H 3/0684 on moving support, e.g. pivoting, for bringing the roller or like rotary separator into contact with the pile
• CPC Class Codes: B65H 3/5261 Retainers of the roller type, e.g. rollers
• CPC Class Codes: B65H 3/56 Elements, e.g. scrapers, fingers, needles, brushes, acting on separated article or on edge of the pile B65H3/52 takes precedence
• CPC Class Codes: B65H 3/565 : for reintroducing partially separated articles in the stack
• CPC Class Codes: B65H 5/062 : between rollers or balls
• CPC Class Codes: B65H 7/18 : Modifying or stopping actuation of separators

Abstract

A method for driving a medium supplying apparatus which supplies medium by a pick-up roller, wherein an operation of stopping rotation of the pick-up roller is inserted at least one of before an operation of supplying medium to a separating position where, when a plurality of sheets of medium are fed together by the pick-up roller displaced to the supplying position, an uppermost sheet of the plurality of sheets of medium is separated from a lower sheet or sheets, and before an operation of returning the separated lower sheet or sheets after separating the uppermost sheet from the lower sheet or sheets.

Claims

1. A method for driving a medium supplying apparatus which supplies a medium including a plurality of sheets by a pick-up roller, the method comprising:

if at least two of the sheets are fed together by the pick-up roller, then;

separating an uppermost sheet of the at least two of the sheets from a lower sheet or sheets of the at least two of the sheets, at a separating position;

returning the lower sheet or sheets of the at least two of the sheets from the separating position to a downstream position which is disposed downstream of the separating position; and

while returning the lower sheet or sheets of the at least two of the sheets to the downstream position, stopping rotation of the pick-up roller in accordance with a type of the medium.

2. The method according to claim 1, wherein the pick-up roller is displaceable between a supplying position and a retracting position, and

wherein a time for stopping the rotation of the pick-up roller is changed according to the supplying position and the retracting position.

3. A medium supplying apparatus, wherein the method according to claim 1 can be adopted.

4. A recording device, comprising the medium supplying apparatus according to claim 3.

5. A method for driving the medium supplying apparatus according to claim 4, wherein a time for stopping the rotation of the pick-up roller is changed according to a recording condition.

6. A liquid jetting device, comprising the medium supplying apparatus according to claim 3.

7. A method of controlling a medium supplying device having a pick-up roller driven by a motor, an intermediate roller disposed downstream of the pick-up roller along a medium path, a retard roller facing the intermediate roller, and a return movable to enter the medium path, the method comprising:

contacting the pick-up roller with an uppermost sheet of medium

rotating the motor for supplying the uppermost sheet of medium while keeping the pick-up roller in contact with the uppermost sheet of medium;

separating the uppermost sheet of medium from a lower sheet or sheets of medium in a first position of the medium path where the retard roller faces the intermediate roller;

returning the lower sheet or sheets of medium with the return to a second position; and

while returning the lower sheet or sheets of medium from the first position to the second position, stopping the motor in accordance with a type of the lower sheet or sheets of medium.

8. The method according to claim 7, wherein a time for stopping the motor is changed according to a position of the pick-up roller.

9. A method of controlling a medium supplying device having a supplying roller driven by a motor, a retard roller facing the supplying roller, and a return movable to enter a medium path, the method comprising:

contacting the supplying roller with an uppermost sheet of medium;

rotating the motor for supplying the uppermost sheet of medium while keeping the supplying roller in contact with the uppermost sheet of medium

separating the uppermost sheet of medium from a lower sheet or sheets of medium in a first position of the medium path where the retard roller faces the supplying roller;

returning the lower sheet or sheets of medium with the return to a second position; and

while returning the lower sheet or sheets of medium from the first position to the second position, for stopping the motor in accordance with a type of the lower sheet or sheets of medium.