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55 plurality faces the first side of a disk of the second plurality.
16. The printer drum of claim 1 wherein the leading edge assembly includes a third plurality of disks and further comprising a second trailing edge assembly including a fourth plurality of disks, the fourth plurality of disks being
60 interleaved with the third plurality of disks and rotatable relative to the leading edge assembly about the axis of rotation.
17. The printer drum of claim 1 wherein the leading edge clamp includes a prestressed clamping member for applying 65 a clamping force to the substrate to hold the substrate.
18. The printer drum of claim 17 further comprising an actuator for releasing the clamping force.
19. The printer drum of claim 1 wherein the trailing edge clamp includes a prestressed clamping member for applying a clamping force to the substrate to hold the substrate.
20. The printer drum of claim 19 further comprising an actuator for releasing the clamping force.
21. A printer drum having an axis of rotation, comprising:
a leading edge assembly for holding a first end of a substrate, the leading edge assembly including a first plurality of interconnected disks, and
a trailing edge assembly for holding a second end of the substrate, the trailing edge assembly including a second plurality of interconnected disks, the second plurality of disks being interleaved with the first plurality of disks and rotatable relative to the first plurality of disks about the axis of rotation,
wherein the disks of the first plurality and the disks of the second plurality each define a through hole located between a center of the disk and a circumference of the disk for containing a balancing weight.
22. The printer drum of claim 21 further including a balance weight located in each disk through hole such that a center of mass of the leading edge assembly and a center of mass of the trailing edge assembly lie along the axis of rotation.
23. A printer drum having an axis of rotation, comprising: a leading edge assembly for holding a first end of a
substrate, the leading edge assembly including a first
plurality of interconnected disks,
a trailing edge assembly for holding a second end of the substrate, the trailing edge assembly including a second plurality of interconnected disks, the second plurality of disks being interleaved with the first plurality of disks and rotatable relative to the first plurality of disks about the axis of rotation, and
a balancing disk interleaved with the disks of the first plurality and the disks of the second plurality, the balancing disk including an adjustably positioned bal-ancing weight for compensating for the weight of the substrate.
24. The printer drum of claim 23 wherein the balancing disk comprises a disk of the leading edge assembly.
25. The printer drum of claim 23 wherein the balancing disk includes a central member having a first side and an
10opposing second side, a first ring rotatably mounted to the first side of the central member, and a second ring rotatably mounted to the second side of the central member.
26. The printer drum of claim 25 wherein the balancing 5 weight comprises a first weight fixedly mounted to the first ring and a second weight fixedly mounted to the second ring.
27. A printer drum having an axis of rotation, comprising: a leading edge assembly for holding a first end of a