Printing system
AssigneeIndigo N.V.
InventorsBenzion Landa, Josef Rosen
Life of this patent
Estimating the term…
Abstract
Duplex printing apparatus for printing on two sides of a sheet, the apparatus including: an expression roller on which the sheet is held during printing; a imager which prints an image on a first side of the sheet while it is being held on the impression roller; and a sheet inverter which removes the sheet from the impression roller, inverts the sheet and returns it to the impression roller for printing on a second side of the sheet by imager, wherein the sheet it to held on said impression roller referenced to a first edge thereof during the printing of the first side thereof and is also held on the impression roller referenced to said first edge during printing of the second side thereof.
Claims58
Duplex printing apparatus for printing on two sides of a sheet the apparatus comprising:
- an impression roller on which the sheet is held during printing;
- an imager which prints an image on a first side of the sheet while it is being held on the impression roller;
- and
- a sheet inverter which removes the sheet from the impression roller, inverts the sheet and returns it to the impression roller for printing on a second side of the sheet by the imager, wherein the sheet is held on said impression roller referenced to a first edge thereof during the printing of the first side thereof and is also held on the impression roller referenced to said first edge during printing of the second side thereof.
Duplex printing apparatus for printing on two sides of a sheet, the apparatus comprising:
- an impression roller on which the sheet is held during printing, referenced to a first edge thereof;
- an imager which prints an image on first side of the sheet while it is being held on the impression roller;
- and
- a sheet inverter which removes the sheet from the impression roller, inverts the sheet and returns it to the impression roller for printing on a second side of the sheet by the imager, wherein the sheet inverter positively controls the position of the sheet from the removal of the sheet from the impression roller to the return of the sheet thereof after the inversion thereof, without releasing the sheet.
A duplex printing method for printing on two sides of a sheet, the method comprising:
- printing an image on a first side of the sheet at a printing position, the sheet and thus said printing being referenced to a first edge thereof;
- inverting the sheet and returning it to the printing position while it remains referenced to said first edge;
- and
- printing an image on a second side of the sheet at said printing position while the sheet and thus said printing is referenced to said first edge.
A duplex printing method for printing on two sides of a sheet, the method comprising:
- printing an image on a first side of the sheet at a printing position, the sheet and thus said printing being referenced to a first edge thereof;
- inverting the sheet and returning it to the printing position;
- and
- printing an image on a second side of the sheet at said printing position,
- wherein the position of the sheet is positively controlled during printing and inversion thereof, without releasing the sheet, such that the printing on the second side thereof is referenced to the first edge.
Dependencies are inferred from the claim text.