Cleaning cards for internal surfaces of machine components
A cleaning card for use in cleaning internal surfaces of machine components includes a substrate having a central plane between opposed surfaces thereof, a machine direction dimension defined between opposed leading and trailing end edges and a transverse direction dimension defined between opposed side edges. The opposed surfaces each have a plurality of discrete raised areas, each including a peak and an inclined peripheral leading wall including an edge remote from the peak. The peak of each raised area is further from the central plane than the edge of the inclined peripheral leading wall remote from the peak and leading walls of a plurality of discrete raised areas have edges defining openings therein for assisting in removing debris from the machine components.
1. A cleaning card for use in cleaning internal surfaces of machine components, said cleaning card including a substrate having a central plane between opposed surfaces thereof, a machine direction dimension defined between opposed leading and trailing end edges and a transverse direction dimension defined between opposed side edges, said opposed surfaces each having a plurality of discrete raised areas, said discrete raised areas each including a peak and an inclined peripheral leading wall having a remote edge spaced from said peak, said peak of each raised area being further from the central plane than the remote edge of the inclined peripheral leading wall, the leading walls of a plurality of said discrete raised areas having surface regions between the peaks and remote edges, said surface regions including openings therethrough for assisting in removing debris from said machine components.
2. The cleaning card of claim 1 , wherein each of said plurality of discrete raised areas also includes an inclined peripheral trailing wall having an edge remote from said peak, said peak being further from the central plane than the edge of the inclined peripheral trailing wall.
3. The cleaning card of claim 2 , wherein at least some of said discrete raised areas on each side of said central plane have an underlying recessed area.
4. The cleaning card of claim 2 , wherein side margins of at least some of said raised areas are separated from said cleaning card substrate.
5. The cleaning card of claim 4 , wherein said raised areas that are separated from said cleaning card substrate are separated by cuts.
6. The cleaning card of claim 1 , wherein said plurality of discrete raised areas are arranged in a plurality of transversely extending rows, at least some discrete raised areas in at least some of the transversely extending rows extending outwardly on each side of said central plane of said substrate.
7. The cleaning card of claim 6 , wherein surface regions of leading walls including openings therethrough extend outwardly on each side of said central plane.
8. The cleaning card of claim 7 , wherein openings in surface regions of leading walls that are located in a plurality of transversely extending rows and extend outward on the same side of said central plane are transversely staggered to overlap each other in said transverse direction.
9. The cleaning card of claim 7 , wherein every other raised area in at least some of the transversely extending rows is on one side of the central plane and the other raised areas in said at least some of said transversely extending rows are on the other side of said central plane.
10. The cleaning card of claim 7 , wherein said raised areas are located in at least three transversely extending rows, every other raised area in three transversely extending rows is on one side of the central plane and the other raised areas in said three transversely extending rows are on the other side of said central plane.
11. The cleaning card of claim 7 , wherein the raised areas in each transversely extending row are transversely offset from the raised areas in adjacent transverse rows.
12. The cleaning card of claim 6 , wherein openings in surface regions of leading walls that are located in a plurality of transversely extending rows and extend outward on the same side of said central plane are transversely staggered to overlap each other in said transverse direction.
13. The cleaning card of claim 6 , wherein every other raised area in at least some of the transversely extending rows is on one side of the central plane and the other raised areas in said at least some of said transversely extending rows are on the other side of said central plane.
14. The cleaning card of claim 13 , wherein the raised areas in each transversely extending row are transversely offset from the raised areas in adjacent transverse rows.
15. The cleaning card of claim 6 , wherein said raised areas are located in at least three transversely extending rows, every other raised area in three transversely extending rows is on one side of the central plane and the other raised areas in said three transversely extending rows are on the other side of said central plane.
16. The cleaning card of claim 6 , wherein at least some of said discrete raised areas on each side of said central plane have an underlying recessed area.
17. The cleaning card of claim 6 , wherein adjacent, transversely extending rows of discrete raised areas are spaced apart from each other in the machine direction by substantially planar sections free of discrete raised areas.
18. The cleaning card of claim 6 , wherein side margins of at least some of said raised areas are separated from said cleaning card substrate.
19. The cleaning card of claim 18 , wherein said raised areas that are separated from said cleaning card substrate are separated by cuts.
20. The cleaning card of claim 6 , wherein the raised areas in each transversely extending row are transversely offset from the raised areas in adjacent transverse rows.
21. The cleaning card of claim 1 , wherein surface regions of leading walls including openings therethrough extend outwardly on each side of said central plane.
22. The cleaning card of claim 1 , wherein said leading and trailing end edges have different configurations to visually indicate which end should be gripped for insertion between machine components to be cleaned.
23. The cleaning card of claim 1 , wherein at least some of said discrete raised areas on each side of the central plane have an underlying recessed area.
24. The cleaning card of claim 1 , wherein said raised areas are compressible by opposed machine components to be cleaned.
25. The cleaning card of claim 1 , wherein said opposed machine components include a thermal printing head and an underlying platen.
26. The cleaning card of claim 1 , wherein side margins of at least some of said raised areas are separated from said cleaning card substrate.
27. The cleaning card of claim 26 , wherein said raised areas that are separated from said cleaning card substrate are separated by cuts.