Sheet material feeding apparatus
AssigneeCanon Denshi Kabushiki Kaisha
InventorsKatsuhiko Okitsu, Masashi Shimamura
Life of this patent
Estimating the term…
Abstract
A feeding rotatable member, a conveying rotatable member and a separating rotatable member are driven by a sheet feeding motor, a feeding motor and a separating motor, respectively, which are independent driving means to thereby feed an original. The separation and conveyance of the original are effected while the opening amount between the conveying rotatable member and the separating rotatable member is changed by a sheet thickness adjusting motor.
Claims38
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means, and
- wherein at least two of said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven in non-synchronism with each other.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means, and
- wherein said apparatus has driving method switching means for switching at least two of said feeding rotatable member, said conveying rotatable member and said separating rotatable member to a case where they are driven in synchronism with each other and a case where they are driven in non-synchronism with each other.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means, and
- wherein a case where at least two of said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven in synchronism with each other and a case where at least two of said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven in non-synchronism with each other are switched in the process of the separating and conveying operation.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means,
- wherein said apparatus has spacing adjusting means for changing the spacing between said conveying rotatable member and said separating rotatable member, and
- wherein, in the separating and conveying operation for the original, the spacing between said conveying rotatable member and said separating rotatable member is changed so that the varying speed of said spacing may vary in conformity with said spacing.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means,
- wherein said apparatus has spacing adjusting means for changing the spacing between said conveying rotatable member and said separating rotatable member, and
- wherein the spacing between said conveying rotatable member and said separating rotatable member is changed with the separating and conveying operation for the original and correction is effected so that said spacing may assume a predetermined size, and the amount of the correction is changed in conformity with said spacing.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means,
- wherein said apparatus has spacing adjusting means for changing the spacing between said conveying rotatable member and said separating rotatable member, and
- wherein, when a plurality of sheet materials are to be fed, in case where a sheet material next to a sheet material which has passed said separating and conveying means is already pinched by said separating and conveying means, the spacing between said conveying rotatable member and said separating rotatable member is made smaller while said conveying rotatable member is reversely rotated.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means,
- wherein, when the sheet material does not normally pass the separating and conveying means and the sheet material remains at the feeding position, the setting of the control conditions of the separating and conveying means is changed and the next separating and conveying operation is performed.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means,
- wherein said apparatus has spacing adjusting means for changing the spacing between said conveying rotatable member and said separating rotatable member,
- wherein said apparatus has double feed detecting means for detecting the double feed of sheet materials downstream of said separating and conveying means with respect to the direction of conveyance of the sheet material,
- wherein the separating and conveying operation for said sheet material is performed while the spacing between said conveying rotatable member and said separating rotatable member is changed, by said spacing adjusting means, and
- wherein, when double feed is detected by said double feed detecting means, said feeding rotatable member and said conveying rotatable member are stopped, and the spacing between said conveying rotatable member and said separating rotatable member is restored to its initial state while said separating rotatable member is rotated in a direction opposite to the sheet material conveying direction, whereby the double-fed sheet materials are discharged from the separating and conveying means.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means,
- wherein said apparatus has spacing adjusting means for changing the spacing between said conveying rotatable member and said separating rotatable member,
- wherein said apparatus has double feed detecting means for detecting the double feed of sheet materials downstream of said separating and conveying means with respect to the sheet material conveying direction,
- wherein the separating and conveying operation for said sheet material is performed while the spacing between said conveying rotatable member and said separating rotatable member is changed by said spacing adjusting means, and
- wherein, when double feed is detected by said double feed detecting means, the spacing between said conveying rotatable member and said separating rotatable member is restored to its initial state while said feeding rotatable member and said conveying rotatable member are rotated in a direction opposite to the sheet material conveying direction, whereby the sheet materials are discharged from said separating and conveying means.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means,
- wherein said apparatus has a plurality of separating conveying modes in which the settings of the control conditions of the sheet material separating and conveying operation are different, and mode switching means for switching said separating and conveying modes.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means,
- wherein, in the sheet material separating and conveying operation, said apparatus has
- an automatic adjusting mode for automatically adjusting the space between said conveying rotatable member and said separating rotatable member by said spacing adjusting means in the sheet material separating and conveying operation,
- a manual adjusting mode for inputting and setting the spacing between said conveying rotatable member and said separating rotatable member in the sheet material separating and conveying operation, and
- spacing adjusting mode switching means for switching said automatic adjusting mode and said manual adjusting mode.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means further having:
- control condition setting means capable of setting the control conditions of the sheet material separating and conveying operation;
- and
- control condition storing means for storing the set substance by said control condition setting means.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member for pinching said sheet material between itself and said conveying rotatable member, and rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means, and
- wherein communication means is provided between said sheet material feeding apparatus and an external apparatus, and said external apparatus is provided with external control condition setting means for setting the control conditions of the sheet material separating and conveying operation through said communication means.
A sheet material processing apparatus which is divided into an upper unit and a lower unit with a conveyance path for sheet materials as the boundary and in which said upper unit can be moved from said lower unit to thereby open said conveyance path, comprising:
- a plurality of sheet material conveying means disposed in each of said upper unit and said lower unit;
- a plurality of drive sources corresponding to respective ones of said sheet material conveying means;
- and
- control means for controlling said plurality of drive sources independently of one another to thereby effect the sheet material conveying operation by said sheet material conveying means.
A sheet feeding apparatus comprising:
- a feeding rotatable member for feeding sheets supported on a sheet supporting table;
- a conveying rotatable member for conveying the sheets fed by said feeding rotatable member in a predetermined direction toward a sheet processing portion;
- a separating rotatable member disposed in opposed relationship with said conveying rotatable member for conveying the sheets in a direction opposite to said predetermined direction;
- driving means for driving said feeding rotatable member, said conveying rotatable member and said separating rotatable member independently of one another;
- spacing adjusting means for changing the spacing between the rotary shaft of said conveying rotatable member and the rotary shaft of said separating rotatable member;
- and
- means for controlling so as to increase the spacing between said conveying rotatable member and said separating rotatable member after the leading end of the sheet fed by said feeding rotatable member has arrived at the opposed portion of said conveying rotatable member and said separating rotatable member.
A sheet material feeding apparatus having a feeding rotatable member for feeding a sheet material from a predetermined feeding position, and separating and conveying means for conveying the sheet material fed by said feeding rotatable member and separating double-fed sheet materials,
- wherein said separating and conveying means includes a conveying rotatable member rotated in a sheet material conveying direction, and a separating rotatable member cooperating with said conveying rotatable member, to pinch said sheet and said separating rotatable member rotated in a direction opposite to said sheet material conveying direction,
- wherein said feeding rotatable member, said conveying rotatable member and said separating rotatable member are driven by respective independent driving means,
- wherein, in the separating and conveying operation of one sheet material, said feeding rotatable member and said separating rotatable member are driven in steps in synchronous synchronizes with each other.
Dependencies are inferred from the claim text.