What is claimed is:
1. A thermal processor for heat processing exposed thermographic media comprising:
a heated drum for heating thermographic media brought into contact with the said drum;
a centrally located assembly for supporting said drum for rotation;
a plurality of spaced rollers located around a segment of said drum for holding media into contact with said drum; and
a plate assembly for mounting said plurality of rollers for movement between a first position in contact with said drum and a second position out of contact with said drum, said plate assembly having first and second spaced alignment plates having circular features that align with said bearing assembly when said plate assembly is in said first position, whereby said rollers are aligned with said drum.
2. The thermal processor of claim 1 wherein said plurality of rollers are mounted by said plate assembly so that they are allowed to float in the radial direction relative to said drum and maintain a constant radial force.
3. The thermal processor of claim 2 including first and second retaining plates, roller mounting means for mounting said plurality of rollers by said first and second retaining plates, and retaining plate mounting means for mounting said first and second said retaining plates by said first and second alignment plates in such a way as to allow said retaining plates to move radially relative to said alignment plates.
4. The thermal processor of claim 3 wherein said roller mounting means allow said rollers to float in a radial direction relative to said drum and to maintain a constant force.
5. The thermal processor of claim 3 wherein said retaining plate mounting means includes a plurality of retaining rods extending between said first and second retaining plates, said first and second retaining plates having clearance holes in which said rods float.
6. The thermal processor of claim 1 including a cover assembly covering said plurality of rollers and being mounted by said plate assembly for removal from said roller assembly.
7. The thermal processor of claim 6 wherein said cover has thermal insulation to retain heat when said roller assembly is in said first position in contact with said heated drum.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of scheduling transmissions in a mobile communication system, said method comprising:
determining a bandwidth assignment for at least one scheduled mobile terminal during a scheduling interval comprising two or more time slots;
determining a frequency hopping pattern for said scheduled mobile terminal over said scheduling interval based on said bandwidth assignment for said scheduled mobile terminal; and
transmitting to said scheduled mobile terminal the bandwidth assignment and frequency hopping pattern for the scheduling interval.
2. The method of claim 1 wherein determining a bandwidth assignment for a scheduled mobile terminal comprises determining a number of subcarriers for said mobile terminal.
3. The method of claim 2 wherein determining a frequency hopping pattern for said scheduled mobile terminal over said scheduling interval comprises determining a frequency offset for said mobile terminal for different time slots in said scheduling interval.
4. The method of claim 3 wherein the mobile terminal is scheduled for uplink transmission and wherein the bandwidth assignment and frequency hopping pattern for the scheduling interval to the mobile terminal comprises transmitting the bandwidth assignment and frequency hopping pattern in a scheduling grant.
5. The method of claim 4 wherein transmitting a scheduling grant to said scheduled mobile terminal comprises transmitting to said scheduled mobile terminal the number of subcarriers allocated to said scheduled mobile terminal and a set of frequency offsets to use by said scheduled mobile terminal in successive time slots of said scheduling interval.
6. The method of claim 5 wherein the number of subcarriers and the set of frequency offsets are transmitted as a single parameter.
7. The method of claim 1 wherein determining a frequency hopping pattern is further based on a bandwidth assignment for at least one other concurrently scheduled mobile terminal.
8. The method of claim 1 wherein determining the bandwidth assignment and determining the frequency hopping pattern comprise determining the bandwidth assignment and frequency hopping pattern for two or more concurrently scheduled mobile terminals in the same scheduling interval.
9. A scheduler in a mobile communication system for scheduling transmissions for a plurality of mobile devices, said scheduler configured to:
determine a bandwidth assignment for at least one scheduled mobile terminal during a scheduling interval comprising two or more time slots;
determine a frequency hopping pattern for said scheduled mobile terminal over said scheduling interval based on said bandwidth assignment for said scheduled mobile terminal; and
transmit to said scheduled mobile terminal the bandwidth assignment and frequency hopping pattern for the scheduling interval.
10. The scheduler of claim 9 configured to determine a bandwidth assignment for a scheduled mobile terminal by determining a number of subcarriers for said mobile terminal.
11. The scheduler of claim 10 configured to determine a frequency hopping pattern for said scheduled mobile terminal over said scheduling interval by determining a frequency offset for said mobile terminal for different time slots in said scheduling interval.
12. The scheduler of claim 11 wherein the scheduler is configured to schedule uplink transmissions from said mobile terminal, wherein the scheduler is configured to transmit the bandwidth assignment and frequency hopping pattern to the mobile terminal in a scheduling grant.
13. The scheduler of claim 12 configured to transmit to said scheduled mobile terminal the number of subcarriers allocated to said scheduled mobile terminal and a set of frequency offsets to use by said scheduled mobile terminal in successive time slots of said scheduling interval.
14. The scheduler of claim 13 wherein the number of subcarriers and the set of frequency offsets are transmitted by the scheduler as a single parameter.
15. The scheduler of claim 9 further configured to determine a frequency hopping pattern based on a bandwidth assignment for at least one other concurrently scheduled mobile terminal.
16. The scheduler of claim 9 configured to determine the bandwidth assignment and frequency hopping pattern for two or more concurrently scheduled mobile terminals in the same scheduling interval.