What is claimed is:
1. In an electrographic reproduction apparatus having a media transport mechanism for transporting media into operative association with a plurality of different color electrographic process modules, said media transport mechanism being an endless web having a seam and a plurality of frames separated by interframes, and a logic and control unit for controlling operation of said electrographic process modules for faithfully reproducing multi-color information on such media, a mechanism for providing image density control signals to said logic and control unit, said mechanism comprising:
at least one densitometer for sensing an image density control patch on said media transport mechanism and producing signals representative of the density of said such image density control patch for said logic and control unit; and
apparatus for enabling said electrographic process modules to generateprint respective uniform image density control patches periodically on said media transport mechanism where said patches can be read by said densitometer for providing signals to said logic and control unit for controlling print control parameters to maintain correct image density, said patches being generatedprinted, one for each color electrographic process module, during each revolution of said media transport mechanism, in the same respective interframe following said seam on said media transport mechanism.
2. Image density control signal mechanism according to claim 1, wherein said apparatus for enabling said electrographic process modules to generateprint respective uniform density control patches can selectively change said same respective interframe following said seam to a different interframe.
3. Image density control signal mechanism according to claim 2, wherein said at least one densitometer senses said image density control patches at the same relative cross-track position, in sequential interframes.
4. Image density control signal mechanism according to claim 2, wherein said at least one densitometer senses said image density control patches at different relative cross-track positions.
5. Image density control signal mechanism according to claim 2, wherein said at least one densitometer senses said image density control patches at different relative cross-track positions, in sequential interframes.
6. Image density control signal mechanism according to claim 2, including a plurality of densitometers equal to the number of electrographic process modules.
7. Image density control signal mechanism according to claim 6, wherein said plurality of densitometers sense said image density control patches at different relative cross-track positions in the same interframe.
8. Image density control signal mechanism according to claim 6, wherein said plurality of densitometers sense said image density control patches at different relative cross-track positions in sequential interframes.
9. In an electrographic reproduction apparatus having a media transport mechanism for transporting media into operative association with a plurality of different color electrographic process modules, said media transport mechanism being an endless web having a seam and a plurality of frames separated by interframes, and a logic and control unit for controlling operation of said electrographic process modules for faithfully reproducing multi-color information on such media, a mechanism for providing image density control signals to said logic and control unit, a process for providing image density control signals to said logic and control unit, said process comprising the steps of:
generatingprinting uniform image density control patches periodically on said media transport mechanism where said patches can be read by a densitometer, said generatingprinting a patch occurring one for each color electrographic process module, during each revolution of said media transport mechanism, in the same respective interframe following the seam on said media transport mechanism; and providing signals from said densitometer to said logic and control unit for controlling print control parameters to maintain correct image density.
10. In the process for providing image density control signals to said logic and control unit, in the step of generatingprinting uniform image density control patches periodically on said media transport mechanism where said patches can be read by a densitometer according to claim 9, a frame area on said transporting media containing no media is made to simulate the occurrence of media such that image density control patches can still be formed relative thereto.
11. In the process for providing image density control signals to said logic and control unit, in the step of generatingprinting uniform image density control patches periodically on said media transport mechanism where said patches can be read by a densitometer according to claim 9, a frame area on said transporting media, prior to or after frame areas containing media, containing no media is made to simulate the occurrence of media such that image density control patches can still be formed relative thereto.
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 roof system, comprising:
a roof deck;
a first waterproofing membrane upwardly adjacent the roof deck;
a channel member arranged over a portion of the first waterproofing membrane near a perimeter of the roof system, the channel member being secured to the roof deck with a plurality of fasteners;
insulation arranged upwardly adjacent the first waterproofing membrane, a portion of the insulation being arranged within a cavity of the channel member;
a weighted cover board disposed on top of the insulation, a portion of the weighted cover board being positioned within the cavity of the channel member, wherein a portion of the first waterproofing membrane surrounds the channel member and extends over a portion of an upper surface of the weighted cover board; and
a second waterproofing membrane arranged upwardly adjacent the weighted cover board and overlapping the portion of the first waterproofing membrane extended over the weighted cover board.
2. The roof system according to claim 1, wherein a sealant is arranged between the first waterproofing membrane and the roof deck adjacent the channel member.
3. The roof system according to claim 2, wherein the sealant is arranged between the first waterproofing membrane and an adjacent wall arranged at the perimeter of the roof system.
4. The roof system according to claim 1, wherein a sealant is arranged between a portion of the channel member and the adjacent first waterproofing membrane.
5. The roof system according to claim 1, wherein the first waterproofing membrane is adhered to the roof deck.
6. The roof system according to claim 1, wherein the weighted cover board is loosely laid over the insulation.
7. The roof system according to claim 1, wherein the insulation is loosely laid over the first waterproofing membrane.
8. The roof system according to claim 1, wherein the insulation is locally adhered to portions of the first waterproofing membrane.
9. The roof system according to claim 1, wherein the insulation includes multiple layers of insulation.
10. The roof system according to claim 9, wherein adjacent layers of insulation are locally adhered to one another.
11. The roof system according to claim 1, wherein a portion of the insulation is cut away to receive a complementary portion of the channel member.
12. The roof system according to claim 1, wherein the second waterproofing membrane wraps at least partially around the channel member towards the roof deck.
13. A method of sealing a roof system, comprising:
adhering a first waterproofing membrane to an adjacent roof deck;
fastening a channel member arranged on top of the first waterproofing membrane, adjacent a perimeter of the roof system, to the roof deck;
installing insulation on top of the first waterproofing membrane, a portion of the insulation being arranged within the channel member;
installing weighted cover board upwardly adjacent the insulation, a portion of the weighted cover board being arranged within the channel member;
wrapping the first waterproofing membrane around the channel member and over a portion of the weighted cover board; and
installing a second waterproofing membrane over the weighted cover board and overlapping a portion of the first waterproofing membrane on top of the cover board.
14. The method according to claim 13, further comprising arranging a sealant between a portion of the first waterproofing membrane and an adjacent wall at the perimeter of the roof system.
15. The method according to claim 13, further comprising arranging a sealant between a portion of the first waterproofing membrane and the roof deck adjacent the channel member.
16. The method according to claim 13, wherein the weighted cover board is loosely laid over the insulation.
17. The method according to claim 13, wherein the insulation is loosely laid over the first waterproofing membrane.
18. The method according to claim 13, wherein the insulation includes multiple layers, and adjacent layers of insulation are locally adhered to one another.