A method comprising: - a first moving of a first clamping element of a clamping device extending in the axial direction of an imaging cylinder of an imaging device, the cylinder having an outer surface, the clamping element located adjacent to the outer surface of the cylinder, - the first moving of the first clamping element being in a direction away from a first surface approximately flush with the outer surface of the cylinder to form a first gap between the first surface and the first clamping element, - placing a first edge of a first flexible plate in the first gap between the first surface and the first clamping element; - a second moving the first clamping element in a direction opposite to the first direction to close the first gap; - automatically maintaining a compressive force onto the first edge placed in the first gap via the clamping element to hold the first edge in a clamped state; - a first moving of a second clamping element of the clamping device extending in the axial direction of the imaging cylinder adjacent to the first clamping element and independently movable; - the first moving of the second clamping element being in a direction away from a second surface approximately flush with the outer surface of the cylinder to form a second gap between the second surface and the second clamping element; - placing a second edge of a flexible plate in the second gap between the second surface and the second clamping element; - a second moving of the second clamping element in a direction opposite to the first direction to close the second gap; and - automatically maintaining a compressive force onto the second edge placed in the second gap via the clamping element to hold the second edge in a clamped state; the method being characterized by - the moving of the first clamping element is obtained by manually applying a rotative force to a mechanism that translates rotative force to rectilinear force on a first rod coupled to a first lever that causes a first axel rotatively coupled to the imaging cylinder and attached to the first clamping element to rotate to open or close the first gap, and by - the moving of the second clamping element is obtained by manually applying a rotative force to a mechanism that translates rotative force to rectilinear force on a second rod coupled to a second lever that causes a second axel rotatively coupled to the imaging cylinder and attached to the second clamping element to rotate to open or close the second gap. - a first moving of a first clamping element of a clamping device extending in the axial direction of an imaging cylinder of an imaging device, the cylinder having an outer surface, the clamping element located adjacent to the outer surface of the cylinder, - the first moving of the first clamping element being in a direction away from a first surface approximately flush with the outer surface of the cylinder to form a first gap between the first surface and the first clamping element, - placing a first edge of a first flexible plate in the first gap between the first surface and the first clamping element; - a second moving the first clamping element in a direction opposite to the first direction to close the first gap; - automatically maintaining a compressive force onto the first edge placed in the first gap via the clamping element to hold the first edge in a clamped state; - a first moving of a second clamping element of the clamping device extending in the axial direction of the imaging cylinder adjacent to the first clamping element and independently movable; - the first moving of the second clamping element being in a direction away from a second surface approximately flush with the outer surface of the cylinder to form a second gap between the second surface and the second clamping element; - placing a second edge of a flexible plate in the second gap between the second surface and the second clamping element; - a second moving of the second clamping element in a direction opposite to the first direction to close the second gap; and - automatically maintaining a compressive force onto the second edge placed in the second gap via the clamping element to hold the second edge in a clamped state; the method being characterized by - the moving of the first clamping element is obtained by manually applying a rotative force to a mechanism that translates rotative force to rectilinear force on a first rod coupled to a first lever that causes a first axel rotatively coupled to the imaging cylinder and attached to the first clamping element to rotate to open or close the first gap, and by - the moving of the second clamping element is obtained by manually applying a rotative force to a mechanism that translates rotative force to rectilinear force on a second rod coupled to a second lever that causes a second axel rotatively coupled to the imaging cylinder and attached to the second clamping element to rotate to open or close the second gap. - the moving of the first clamping element is obtained by manually applying a rotative force to a mechanism that translates rotative force to rectilinear force on a first rod coupled to a first lever that causes a first axel rotatively coupled to the imaging cylinder and attached to the first clamping element to rotate to open or close the first gap, and by - the moving of the second clamping element is obtained by manually applying a rotative force to a mechanism that translates rotative force to rectilinear force on a second rod coupled to a second lever that causes a second axel rotatively coupled to the imaging cylinder and attached to the second clamping element to rotate to open or close the second gap.