1. A method for producing a gloss watermark comprising:
a) depositing a selected pattern of a heat-softenable marking material onto a marking material-bearing portion of a receiver;
b) surfacing a heatable fixing member in a selected region so that a surface roughness of the fixing member in the selected region is different than a surface roughness of the fixing member outside the selected region;
c) heating the surfaced fixing member;
d) after the deposition step, applying pressure to the marking-material-bearing portion of the receiver using the heated fixing member, so that the marking material flows and acquires a gloss in a differentiated region on the receiver corresponding to the selected region of the fixing member that is different than the gloss of the marking material outside the differentiated region; and
e) creating a watermark on a surface of the marking material that is visible in specular reflection and not visible under diffuse lighting conditions due to the gloss difference.
2. The method according to claim 1, wherein the depositing step includes transferring the marking material from a marking-material-bearing member to the receiver.
3. The method according to claim 2, wherein the marking material is transferred by application of an electrostatic field that urges the marking material from the marking-material-bearing member to the receiver.
4. The method according to claim 2, wherein the marking material includes toner.
5. The method according to claim 1, wherein the depositing step includes jetting molten marking material.
6. The method according to claim 1, wherein the gloss of the marking material in the differentiated region is less than the gloss of the marking material outside the differentiated region.
7. The method according to claim 1, wherein the gloss of the marking material in the differentiated region is greater than the gloss of the marking material outside the differentiated region.
8. The method according to claim 1, wherein the differentiated region occupies more than 25% of the area of the receiver.
9. The method according to claim 1, wherein the differentiated region includes multiple disconnected segments.
10. A method for producing a gloss watermark comprising:
a) depositing a selected pattern of a heat-softenable marking material onto a marking-material-bearing portion of a receiver;
b) surfacing a fixing member in a selected region so that a surface roughness of the fixing member in the selected region is different than a surface roughness of the fixing member outside the selected region;
c) after the deposition step, heating the receiver and applying pressure to the marking-material-bearing portion of the heated receiver using the fixing member, so that the marking material flows and acquires a gloss in a differentiated region on the receiver corresponding to the selected region of the fixing member that is different than the gloss of the marking material outside the differentiated region to create the gloss watermark on a surface of the marking material; and
d) creating a watermark on a surface of the marking material that is visible in specular reflection and not visible under diffuse lighting conditions due to the gloss difference.
11. The method according to claim 10, wherein the depositing step includes transferring the marking material from a marking-material-bearing member to the receiver.
12. The method according to claim 11, wherein the marking material is transferred by application of an electrostatic field that urges the marking material from the marking-material-bearing member to the receiver.
13. The method according to claim 11, wherein the marking material includes toner.
14. The method according to claim 10, wherein the depositing step includes jetting molten marking material.
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. An air filter cartridge comprising:
(a) a media pack surrounding an open filter interior having first and second ends;
(b) a first end cap positioned on the media pack first end;
(i) the first end cap having a central aperture therein;
(c) a housing seal member positioned on the first end cap;
(d) a second end cap on the media pack second end; the second end cap including an inner surface and an outer surface;
(i) the outer surface including a receiving groove having at least one serpentine wall;
(ii) the outer surface including an outwardly directed projection surrounded by the receiving groove; and,
(iii) the inner surface including a central receiving projection projecting away from the first end cap;
(A) the central receiving projection being surrounded by the receiving groove.
2. An air filter cartridge according to claim 1 wherein:
(a) the receiving groove has an 8 petal shape.
3. An air filter cartridge according to claim 1 wherein:
(a) the media pack has a conical shape tapering downwardly in extension from the first end cap to the second end cap.
4. An air filter cartridge according to claim 1 wherein:
(a) the receiving groove is serpentine receiving groove with a serpentine inner and outer walls.
5. An air filter cartridge according to claim 1 wherein:
(a) the receiving groove has inner and outer walls spaced no more than 25 mm apart.
6. An air filter cartridge according to claim 1 wherein:
(a) the housing seal member is configured to form a radially outwardly directed seal.
7. An air filter cartridge according to claim 6 wherein:
(a) the media pack includes an inner liner with a media support and a seal support;
(b) the housing seal member is a seal projection positioned on the inner liner;
(i) the seal support being integral with the media support and having a larger diameter than an immediate adjacent portion of the media support; and,
(ii) a portion of the second end cap forming: the receiving groove, the outwardly directed projection; and, the central receiving projection, being integral with the media support.
8. An air cleaner assembly comprising:
(a) a housing defining an interior and having an air flow inlet and an air flow outlet;
(i) the housing defining a service access end and a removable access cover positioned thereover; and,
(ii) the access cover including a central projection thereon, extending into the housing interior from the access cover;
(b) a central cartridge support projecting toward the access cover from an end of the housing opposite the access cover;
(i) the central cartridge support having a first end remote from the end of the housing opposite the access cover; the first end of the central cartridge support including a receiving groove surrounding a central projection; the central projection extending toward the access cover; and,
(c) an air filter cartridge removably positioned in the housing interior, the filter cartridge comprising:
(i) a media pack comprising media surrounding an open interior; the media having first and second ends;
(ii) a first end cap positioned on the media first end;
(A) the first end cap having a central aperture therethrough;
(iii) a seal member on the first end cap removably sealed to the housing;
(iv) a second end cap positioned on the media pack second end; the second end cap being a closed end cap;
(A) the second end cap including a portion projecting into the receiving groove on the end of the central support;
(B) the second end cap including a portion extending over the central projection of the central cartridge support; and,
(C) the second end cap including an outer surface with a receiving groove therein;
(1) the central projection on the access cover projecting into a receiving groove on the outer surface of the second end cap.
9. An air cleaner assembly according to claim 8 wherein:
(a) the receiving groove in the outer surface of the second end cap has a serpentine outer wall.
10. An air cleaner assembly according to claim 9 wherein:
(a) the receiving groove in the outer surface of the second end cap has a serpentine inner wall.
11. An air cleaner assembly according to claim 8 wherein:
(a) the receiving groove in the outer surface of the second end cap has inner and outer walls spaced no more than 25 mm apart.
12. An air cleaner assembly according to claim 11 wherein:
(a) the central projection on the access cover is a serpentine projection.
13. An air cleaner assembly comprising:
(a) a housing including a housing body and an access cover;
(i) the housing body including a sidewall and a central cartridge support;
(ii) the sidewall defining housing body interior with an open end,
(iii) the housing body having a end defining an air flow aperture therethrough; and
(iv) the central cartridge support extending from a support base toward the housing open end;
(A) the central cartridge support having a support end remote from the support base; and,
(B) the support end including a first, ring, projection surrounding, and spaced from, a second central projection to define a support end receiving space therebetween;
(b) a serviceable primary air filter cartridge positioned within the housing body interior;
(i) the primary air filter cartridge comprising a media pack surrounding an open filter interior and extending between first and second end caps;
(ii) the first end cap being an open end cap with a central aperture therethrough; the first end cap having a housing seal thereat;
(iii) the second end cap being a closed end cap; the second end cap including an inner surface with:
(A) a central receiver; and
(B) an inwardly projecting section surrounding the central receiver;
(iv) the second end cap including an outer surface with a receiving groove therein;
(v) the serviceable primary air filter cartridge being positioned in the housing body interior with:
(A) the housing seal on the primary air filter cartridge sealed to a portion of the housing;
(B) the central cartridge support projecting through the first end cap open aperture into the open filter interior;
(C) the first ring projection on the support end of the central support projecting toward the second end cap; and
(D) the second, central, projection on the support end of the housing body support projecting into the central receiver of the second end cap; and
(c) the access cover being secured over the open end of the housing body; the access cover including an inside surface with a first projection;
(i) the access cover being positioned with:
(A) the first projection, on the access cover inner surface, projecting into the receiving groove on the second end cap of the primary filter cartridge.
14. An air cleaner assembly according to claim 13 wherein:
(a) the second end cap inner surface includes a ring receiver surrounding, and spaced from, the central receiver; and,
(b) the first, ring, projection on the support end of the central support projects into the ring receiver on the inside surface of the second end cap.
15. An air cleaner assembly according to claim 13 wherein:
(a) the outer surface of the second end cap of the primary air filter cartridge includes a central outward projection thereon;
(i) the central outward projection defines, on an inside surface thereof, the central receiver; and,
(b) the access cover includes, on the inner surface, an outwardly projecting receiver;
(i) the outwardly projecting receiver on the access cover receiving, projecting therein, the central outward projection on the second end cap of the primary air filter cartridge.
16. An air cleaner assembly according to claim 13 including:
(a) a serviceable secondary filter having a first end cap and an extension of media secured to the first end cap;
(i) the first end cap having a central aperture; and,
(ii) the secondary filter being positioned:
(A) within the open filter interior of the primary air filter cartridge;
(B) with the media of the second air filter surrounding the central cartridge support; and,
(C) with the central aperture of the secondary filter first end cap positioned around a portion of the support end of the central support; and, with the ring projection of the central support projecting therethrough.
17. An air cleaner assembly according to claim 13 herein:
(a) the first projection on the access cover inner surface is a ring projection.
18. An air cleaner assembly according to claim 13 wherein:
(a) the first projection on the access cover inner surface is a ring projection having a serpentine inner wall surface and a serpentine outer wall surface; and,
(b) the receiving groove on the outer surface of the primary filter cartridge second end cap has a serpentine outer wall.
19. An air cleaner assembly according to claim 13 wherein:
(a) the first, ring, projection on the support end of the central support has a radially inwardly directed, serpentine, surface; and
(b) the inner surface of the primary filter cartridge second end cap has a ring receiver with a radially outwardly directed serpentine surface.
20. An air cleaner assembly according to claim 19 wherein:
(a) the ring receiver on the inner surface of the primary filter cartridge second end cap is non-rotatably engaged with the first ring projection on the support end of the central support.
21. An air cleaner assembly according to claim 13 wherein:
(a) the central support includes a conical sidewall section narrowing in diameter in extension toward the support end from a base region adjacent the housing end wall.
22. An air cleaner assembly according to claim 13 wherein:
(a) the central support includes a porous sidewall portion.
23. An air cleaner assembly according to claim 13 wherein:
(a) the media pack of primary air filter cartridge has a conical sidewall section tapering downwardly in extension from the first end cap toward the second end cap.
24. An air filter cartridge comprising:
(a) a media pack surrounding an open filter interior and having first and second ends;
(b) a first end cap positioned in the media pack first end;
(i) the first end cap having a central aperture therein;
(c) a seal member positioned on the first end cap;
(d) a second end cap positioned on the media pack second end; the second end cap including an inner surface and an outer surface;
(i) the outer surface including a first receiving groove at least 6 mm deep therein;
(A) the outer wall of the receiving groove being spaced radially inwardly at least 20 mm from the media pack; and,
(ii) the inner surface having a central receiver projecting outwardly away from the first end cap;
(iii) the central receiver being surrounded by the receiving groove.
25. An air filter cartridge according to claim 24 wherein:
(a) the receiving groove in the outer surface of the second end cap is positioned between walls spaced no more than 25 mm apart.
26. An air filter cartridge according to claim 24 wherein:
(a) the receiving groove has a serpentine outer wall.
27. An air filter cartridge according to claim 24 wherein:
(a) the receiving groove has a serpentine inner wall.
28. A filter cartridge according to claim 24 wherein:
(a) the inner surface of the second end cap includes an inward projection defined on an opposite side of the end cap from the receiving groove;
(i) the inward projection having a serpentine outer sidewall surface;
(b) the inner surface of the second end cap defining a ring receiver and the serpentine outer sidewall surface of the inward projection defining a radially inner, outwardly facing, surface of the ring receiver.
29. An air filter cartridge according to claim 24 wherein:
(a) the media pack comprises pleated media configured in a conical shape tapering downwardly in extension from the first end cap to the second end cap;
(b) the seal member is an outwardly directed radial seal member; and,
(c) the outer wall of the receiving groove has a serpentine shape with alternating inwardly convex and inwardly concave sections.
30. An air filter cartridge according to claim 29 wherein:
(a) the outer wall of the receiving groove has eight inwardly convex sections and eight inwardly concave sections.
31. An air cleaner assembly comprising:
(a) a housing including a housing body and an access cover;
(i) the housing body including a sidewall and an open end;
(ii) the housing defining an air flow aperture therethrough; and,
(iii) the housing body defining a housing body interior;
(b) a serviceable primary air filter cartridge positioned within the housing body interior;
(i) the primary air filter cartridge comprising a media pack surrounding an open filter interior and extending between first and second end caps;
(ii) the first end cap being an open end cap with a central aperture therethrough;
(iii) a housing seal positioned on the first end cap; and,
(iv) the second end cap being a closed end cap; the second end cap including an outer surface with a receiving groove therein;
(A) the receiving groove being defined by a radially inner wall and a radially outer wall spaced no more than 25 mm apart; and,
(B) the receiving groove being spaced at least 20 mm radially inwardly from the media pack; and,
(c) the access cover being secured over the open end of the housing body; the access cover including an inside surface with a first ring projection;
(i) the access cover being positioned with the first ring projection projecting into the receiving groove on the second end cap of the primary filter cartridge; and,
(ii) the first ring projection being a serpentine projection with serpentine inner and outer surfaces.
32. An air cleaner assembly according to claim 31 wherein:
(a) at least one of the radially inner and outer walls of the receiving groove is a serpentine wall.
33. An air cleaner assembly according to claim 31 wherein:
(a) the second end cap outer surface includes a central outward projection surrounded by the receiving groove; and,
(b) the access cover inner surface includes a receiver into which the central projection on the primary filter cartridge projects.
34. An air cleaner assembly comprising:
(a) a housing defining an interior and having an air flow inlet and an air flow outlet;
(i) the housing defining a service access end with a removable access cover positioned thereover; and,
(ii) the access cover including a central serpentine projection thereon, extending into the housing interior from the access cover;
(b) a central cartridge support projecting toward the access cover from an end of the housing opposite the access cover;
(i) the central cartridge support having a first end remote from the end of the housing opposite the access cover; the first end of the central cartridge support including a receiving groove surrounding a central projection; the central projection extending toward the access cover;
(c) an air filter cartridge removably positioned in the housing interior, the filter cartridge comprising:
(i) a media pack comprising media surrounding an open interior; the media having first and second ends;
(ii) a first end cap positioned on the media first end;
(A) the first end cap having a central aperture therethrough; and,
(iii) a seal member on the first end cap removably sealed to the housing; and,
(iv) a second end cap positioned on the media pack second end.
35. A secondary filter cartridge for an air cleaner assembly, the secondary filter cartridge comprising:
(a) a porous sidewall having first and second ends and a conical shape tapering downwardly from the first end to the second end;
(b) media positioned adjacent the media; and,
(c) a first end cap, having a central aperture therethrough, positioned on the second end of the porous sidewall;
(i) the first end of the porous sidewall having no end cap thereon.