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US 8,408,541 B2Granted
Method and apparatus for controlling transfer of paper
AssigneeSamsung Electronics Co., Ltd.
InventorHyun-soo Song
Life of this patent
Estimating the term…
Abstract
A method and apparatus for controlling transfer of paper. In order to align the leading end of a sheet of paper, when the sheet arrives at a predetermined position in an image forming apparatus, a registration unit is stopped from operating and a driving unit that transfers the sheet from an auxiliary paper-feeding unit is also stopped from operating so that bending and crumpling of the sheet can be minimized.
Claims19
A method of controlling transfer of paper comprising:
- stopping operation of a registration unit when a sheet of paper that is transferred from a plurality of auxiliary paper-feeding units of an image forming apparatus arrives at a predetermined position of the image forming apparatus so as to align a leading edge of the sheet at the registration unit;
- and
- in response to stopping of the registration unit, stopping operation of driving units of the plurality of auxiliary paper-feeding units that transferred the sheet,
- wherein the stopping of the operation of the driving units includes, upon a part of the sheet being located in a first driving units corresponding to one of the plurality of auxiliary paper-feeding units and another part of the sheet being located in a second driving units corresponding to another one of the plurality of auxiliary paper-feeding units, the first driving unit being a greater distance from the registration unit than the second driving unit, stopping an operation of the first driving unit, and stopping, at a later time, an operation of the second driving unit.
1 more element
An apparatus for controlling transfer of paper, the apparatus comprising:
- a driving unit that transfers a sheet of paper loaded in an auxiliary paper-feeding unit;
- a registration unit that aligns a leading edge of the sheet transferred from the auxiliary paper-feeding unit by the driving unit and further transfers the sheet;
- and
- a control unit that stops a driving force of the registration unit and, in response stops the driving unit when the leading edge of the sheet that has been transferred from the auxiliary paper-feeding unit, arrives at the registration unit,
- wherein the control unit comprises:
- a first control unit that stops the driving force of the registration unit when the leading edge of the sheet that is transferred from the auxiliary paper-feeding unit arrives at the registration unit, and
- a second control unit that stops the driving unit upon the driving force of the registration unit stopping,
- wherein the second control unit stops operation of another driving unit of another second auxiliary paper unit when part of the sheet is located in a second driving unit, and
- wherein the second control unit stops the operation of the another driving unit and then stops the operation of the driving unit when part of the sheet is located in the another driving unit and another part of the sheet is located in the driving unit.
6 more elements
An apparatus for controlling transfer of paper, the apparatus comprising:
- a driving unit that transfers a sheet of paper loaded in an auxiliary paper-feeding unit;
- a registration unit that aligns a leading edge of the sheet transferred from the auxiliary paper-feeding unit by the driving unit and further transfers the sheet;
- a first control unit that stops a driving force of the registration unit when the leading edge of the sheet that is transferred from the auxiliary paper-feeding unit arrives at the registration unit;
- and
- a second control unit that stops operation of the driving unit in response to the stopping of the driving force of the registration unit stops,
- wherein the second control unit stops operation of another driving unit of another second auxiliary paper unit when part of the sheet is located in a second driving unit, and
- wherein the second control unit stops the operation of the another driving unit and then stops the operation of the driving unit when part of the sheet is located in the another driving unit and another part of the sheet is located in the driving unit.
4 more elements
An apparatus for controlling transfer of paper, the apparatus comprising:
- at least one driving unit that transfers a sheet of paper loaded in a corresponding at least one paper feeding unit;
- a registration unit that aligns a leading edge of the sheet transferred from the at least one paper feeding unit by the at least one driving unit and further transfers the sheet;
- and
- a plurality of control units that respectively stop a driving force of the registration unit and the at least one driving units when the leading edge of the sheet arrives at the registration unit,
- wherein the plurality of control units comprises:
- a first control unit that stops a driving force of the registration unit when the leading edge of the sheet arrives at the registration unit, and
- a second control unit that stops an operation of a first driving unit corresponding to one of the at least one paper feeding unit upon the driving force of the registration unit stopping,
- wherein the second control unit stops an operation of a second driving unit corresponding to another one of the at least one paper feeding unit when part of the sheet is located in the second driving unit,
- wherein the second control unit stops the operation of the second driving unit and then stops the operation of the first driving unit when part of the sheet is located in the second driving unit and another part of the sheet is located in the first driving unit and the first driving unit is a greater distance from the registration unit than the second driving unit.
6 more elements
Dependencies are inferred from the claim text.