US20070086826A1 - Bearing - Google Patents
Bearing Download PDFInfo
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- US20070086826A1 US20070086826A1 US11/581,323 US58132306A US2007086826A1 US 20070086826 A1 US20070086826 A1 US 20070086826A1 US 58132306 A US58132306 A US 58132306A US 2007086826 A1 US2007086826 A1 US 2007086826A1
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- United States
- Prior art keywords
- shaft
- bearing
- journal
- cylindrical
- supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/02—Rollers
- B41J13/076—Construction of rollers; Bearings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/50—Machine elements
- B65H2402/52—Bearings, e.g. magnetic or hydrostatic bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/14—Roller pairs
- B65H2404/143—Roller pairs driving roller and idler roller arrangement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/17—Details of bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
- B65H2801/12—Single-function printing machines, typically table-top machines
Definitions
- journal bearing In many printers, paper or other print media is fed into the printer with rollers mounted to one or more rotating shafts. These shafts are usually supported on each end with a cylindrical journal bearing. In a journal bearing, the stationary supporting part is called the “bearing” and that portion of the shaft directly supported the bearing is called the “journal.” In a cylindrical journal bearing, the bearing and the journal are both cylindrical—a cylindrical journal on the shaft fits into a cylindrical opening in the bearing. Very small clearances between the shaft journals and the support bearings are necessary to maintain the accurate paper feed required for good image quality. At the same time, the torque required to turn the shaft must remain low to prevent the paper feed motor from overheating or stalling during higher speed printing.
- journal bearings at each end of the shaft must be closely aligned to prevent the shaft journals from binding inside the bearings and increasing the motor torque needed to turn the shaft. Achieving good bearing alignment is very difficult, however, especially when the bearings at each end of the shaft are mounted to separate components in the printer.
- FIG. 1 is a perspective view of a shaft supported on journal bearings according to one embodiment of the invention.
- FIG. 2 is a partial section view of the bearings shown in FIG. 1 .
- FIG. 3 is a perspective view of the outside of an inkjet printer.
- FIG. 4 is a perspective view of an inkjet printer such as the one shown in FIG. 3 with the cover and other parts of the housing removed.
- FIG. 5 is a side elevation and partial section view of the inkjet printer of FIG. 3 .
- FIG. 6 is a detail perspective view showing a connection between the media sheet output shaft and the chassis in the printer of FIG. 4 .
- FIG. 7 is a perspective view of the media sheet output shaft in the printer of FIG. 4 supported on journal bearings constructed according to one embodiment of the invention.
- FIG. 8 is an exploded perspective view of one end of the shaft of FIG. 7 showing in detail one of the journal bearings supporting the shaft.
- FIGS. 9 and 10 are detail partial section views of one end of the shaft of FIG. 7 .
- the shaft is aligned in FIG. 9 .
- the shaft is misaligned in FIG. 10 .
- Embodiments of the invention were developed in an effort to reduce the adverse effects of misalignment in the bearings supporting printer media feed shafts while still maintaining the tight clearances needed for good image quality.
- Embodiments of the invention are directed to a bearing of the type commonly referred to as a journal bearing.
- the stationary supporting part is called the “bearing” and that portion of a moving part directly supported by the bearing is called the “journal.”
- the surfaces of each of these parts that move against one another are called the “bearing surface” and the “journal surface”, respectively.
- FIG. 1 is a perspective view of a shaft 10 supported at each end inside a cylinder 12 with journal bearings 14 constructed according to one embodiment of the invention.
- FIG. 2 is a partial section view of a journal bearing 14 .
- shaft 10 is supported inside cylinders 12 on spherical journals 16 that protrude from shaft 10 . That portion of each cylinder 12 immediately adjacent to each journal 16 forms the bearings 18 for journals 16 .
- Each journal bearing 14 includes a journal 16 and supporting bearing 18 .
- Each journal 16 includes a spherical journal surface 20 that rotates against a cylindrical bearing surface 22 on each bearing 18 .
- Embodiments of the new journal bearings which use a spherical journal in a cylindrical bearing, allow the feed roller shaft to rotate freely in all directions without binding inside the bearing. This freedom of movement makes alignment between the bearings much less important for maintaining low motor torque. The clearance between the journal and bearing surfaces can be tight without significantly increasing the risk of binding.
- the contact between the journal and bearing surfaces in embodiments of the new journal bearings is smaller than that of conventional journal bearings.
- the theoretical contact between the journal and bearing surfaces lies along a curved plane (along a line when the bearing is viewed in longitudinal section).
- the theoretical contact between the journal and bearing surfaces lies along a curved line (at a point when the bearing is viewed in longitudinal section).
- the pressure on the bearing at the contact area can be much higher in embodiments of the new bearings than the pressure in a conventional bearing under the same load. Exceptional freedom of movement, therefore, means higher contact pressures. It has been discovered, however, that higher contact pressures in a journal bearing can be tolerated in print media feed applications due to the light loading on the bearings.
- FIG. 3 illustrates an inkjet printer 50 .
- FIG. 4 shows inkjet printer 50 with cover 52 and other parts of housing 54 removed.
- FIG. 5 is a side elevation and partial section view of inkjet printer 50 .
- printer 50 includes a cover 52 and a housing 54 .
- a sheet media tray 56 is positioned at the bottom of printer 50 along an opening 58 in housing 54 .
- Paper or other print media sheets 61 are stacked in tray 56 for input to printer 50 and printed sheets are output back through opening 58 over tray 56 .
- a supporting surface 60 helps suspend the trailing edge of the printed sheets over tray 56 .
- Printer 50 includes a chassis 62 that supports the operative components of printer 50 .
- Chassis 62 represents generally those parts of housing 54 along with other structurally stable elements in printer 50 that support the operative components of printer 50 .
- a printhead carriage 64 is driven back and forth along a guide rail 66 mounted to chassis 62 . Any suitable drive mechanism may be used to move carriage 64 .
- Carriage 64 has stalls for holding one or more printheads 68 .
- carriage 64 carries two printheads 68 —one printhead containing color ink for color printing and one printhead containing black ink for monochrome printing.
- Printheads 68 are also commonly referred to as print cartridges or ink cartridges.
- printheads 68 are positioned along a media path 70 such that each sheet of print media 61 passes directly under printheads 68 .
- the bottom of each printhead 68 which faces media sheet 61 , includes an array of nozzles through which drops of ink are ejected onto media sheet 61 .
- An electronic printer controller 72 receives print data from a computer, scanner, digital camera or other image generating device. Controller 72 controls the movement of carriage 64 back and forth across media sheet 61 and the advance of media sheet 61 along media path 70 .
- Printer controller 72 is also electrically connected to printheads 68 through, for example, a flexible ribbon cable 74 . As carriage 64 carries printheads 68 across media sheet 61 , printer controller 72 selectively activates ink ejection elements in printheads 68 according to the print data to eject ink drops through the nozzles onto media sheet 61 . By combining the movement of carriage 64 across media sheet 61 with the movement of sheet 61 along media path 70 , controller 72 causes printheads 68 to eject ink onto media sheet 61 to form the desired print image.
- a top sheet 61 is “picked” from a stack of media sheets in tray 56 and fed along media path 70 .
- pick roller 76 is driven clockwise at the direction of controller 72 to grab top sheet 61 and feed it along media path 70 toward transport rollers 78 .
- Transport rollers 78 bear against idler rollers 79 to form a nip that moves sheet 61 along toward output rollers 80 .
- Output rollers 80 bear against idler arms 82 to form a nip that moves sheet 61 onto sheet output supporting surface 60 .
- Output rollers 80 are mounted on a shaft 84 .
- Output rollers shaft 84 is mounted at each end to chassis 62 .
- Output rollers shaft 84 is driven by a motor 86 through a gear train 88 .
- each journal bearing 90 includes a spherical journal 92 integral with or affixed to shaft 84 and a bearing 94 integral with or affixed to a mounting part 96 .
- Mounting part 96 is sized and shaped to form or hold bearing 94 while mounting securely into chassis 62 .
- Each journal 92 includes a spherical journal surface 98 that rotates against a cylindrical bearing surface 100 on each bearing 90 .
- bearing surface 100 is defined by the inside surface of a cylindrical bushing 102 pressed or over molded into bearing 94 .
- E-clips 104 pushed into grooves 106 on shaft 84 , or another suitable retainer, hold bearings 90 in position on shaft 84 .
- Splines 108 on one end of shaft 84 provide an operative connection between shaft 84 and gear train 88 ( FIG. 4 ).
- Forming bearing surface 100 in a bushing 102 discrete from the rest of bearing 90 and mounting part 96 allows the use of dissimilar materials for these parts. For example, where the characteristics of the bearing surface/journal surface interface require a comparatively tough, wear resistant material, bearing surface 100 can be formed in a bushing 102 and the rest of bearing 94 and mounting part 96 formed from a softer less expensive material.
- Carriage 64 and printheads 68 along with other hardware components necessary to deliver ink to the print media are referred to collectively as a print engine.
- the print engine will include those components needed to deliver toner or another marking material to the print media.
- Rollers 76 , 78 and 80 along with other hardware components necessary to transport the print media through printer 50 are referred to collectively as a media feed mechanism.
- Controller 72 includes the programming, processor and associated memory and electronic circuitry necessary to control the print engine, the feed mechanism, and the other operative components of printer 50 .
Abstract
In one embodiment, a bearing comprises a cylindrical bearing surface supporting a spherical journal surface. In another embodiment, a device comprises a shaft having a spherical journal surface supported inside and rotatable against a cylindrical bearing surface. In another embodiment, a sheet media feed mechanism comprise: a chassis; a motor mounted to the chassis; a rotatable shaft operatively coupled to the motor; a roller affixed to the shaft; an idler disposed opposite the roller, the idler and the roller engagable with one another to form a nip therebetween; bearings mounted to the chassis and supporting the shaft, each bearing having a cylindrical inner bearing surface; and the shaft having a spherical journal surface inside and rotatable against each bearing surface.
Description
- This is a division of application Ser. No. 10/730,780 filed Dec. 9, 2003.
- In many printers, paper or other print media is fed into the printer with rollers mounted to one or more rotating shafts. These shafts are usually supported on each end with a cylindrical journal bearing. In a journal bearing, the stationary supporting part is called the “bearing” and that portion of the shaft directly supported the bearing is called the “journal.” In a cylindrical journal bearing, the bearing and the journal are both cylindrical—a cylindrical journal on the shaft fits into a cylindrical opening in the bearing. Very small clearances between the shaft journals and the support bearings are necessary to maintain the accurate paper feed required for good image quality. At the same time, the torque required to turn the shaft must remain low to prevent the paper feed motor from overheating or stalling during higher speed printing. With a conventional cylindrical journal bearing, the small clearances between the journals and the bearings means the journal bearings at each end of the shaft must be closely aligned to prevent the shaft journals from binding inside the bearings and increasing the motor torque needed to turn the shaft. Achieving good bearing alignment is very difficult, however, especially when the bearings at each end of the shaft are mounted to separate components in the printer.
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FIG. 1 is a perspective view of a shaft supported on journal bearings according to one embodiment of the invention. -
FIG. 2 is a partial section view of the bearings shown inFIG. 1 . -
FIG. 3 is a perspective view of the outside of an inkjet printer. -
FIG. 4 is a perspective view of an inkjet printer such as the one shown inFIG. 3 with the cover and other parts of the housing removed. -
FIG. 5 is a side elevation and partial section view of the inkjet printer ofFIG. 3 . -
FIG. 6 is a detail perspective view showing a connection between the media sheet output shaft and the chassis in the printer ofFIG. 4 . -
FIG. 7 is a perspective view of the media sheet output shaft in the printer ofFIG. 4 supported on journal bearings constructed according to one embodiment of the invention. -
FIG. 8 is an exploded perspective view of one end of the shaft ofFIG. 7 showing in detail one of the journal bearings supporting the shaft. -
FIGS. 9 and 10 are detail partial section views of one end of the shaft ofFIG. 7 . The shaft is aligned inFIG. 9 . The shaft is misaligned inFIG. 10 . - Embodiments of the invention were developed in an effort to reduce the adverse effects of misalignment in the bearings supporting printer media feed shafts while still maintaining the tight clearances needed for good image quality. Embodiments of the invention are directed to a bearing of the type commonly referred to as a journal bearing. In a journal bearing, the stationary supporting part is called the “bearing” and that portion of a moving part directly supported by the bearing is called the “journal.” The surfaces of each of these parts that move against one another are called the “bearing surface” and the “journal surface”, respectively.
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FIG. 1 is a perspective view of ashaft 10 supported at each end inside acylinder 12 withjournal bearings 14 constructed according to one embodiment of the invention.FIG. 2 is a partial section view of a journal bearing 14. Referring toFIGS. 1 and 2 ,shaft 10 is supported insidecylinders 12 onspherical journals 16 that protrude fromshaft 10. That portion of eachcylinder 12 immediately adjacent to eachjournal 16 forms thebearings 18 forjournals 16. Each journal bearing 14 includes ajournal 16 and supporting bearing 18. Eachjournal 16 includes aspherical journal surface 20 that rotates against acylindrical bearing surface 22 on each bearing 18. - One exemplary application for embodiments of the invention will now be described with reference to a media feed roller shaft in the inkjet printer shown in FIGS. 3-5. Embodiments of the new journal bearings, which use a spherical journal in a cylindrical bearing, allow the feed roller shaft to rotate freely in all directions without binding inside the bearing. This freedom of movement makes alignment between the bearings much less important for maintaining low motor torque. The clearance between the journal and bearing surfaces can be tight without significantly increasing the risk of binding.
- The contact between the journal and bearing surfaces in embodiments of the new journal bearings is smaller than that of conventional journal bearings. In a conventional journal bearing, the theoretical contact between the journal and bearing surfaces lies along a curved plane (along a line when the bearing is viewed in longitudinal section). In embodiments of the new journal bearings, the theoretical contact between the journal and bearing surfaces lies along a curved line (at a point when the bearing is viewed in longitudinal section). The pressure on the bearing at the contact area can be much higher in embodiments of the new bearings than the pressure in a conventional bearing under the same load. Exceptional freedom of movement, therefore, means higher contact pressures. It has been discovered, however, that higher contact pressures in a journal bearing can be tolerated in print media feed applications due to the light loading on the bearings. (Because it is not usually practicable to fabricate ideal bearing surfaces, the actual contact between the journal and bearing surfaces may be less than the theoretical contact. Nevertheless, the theoretical contact is used to describe the contact between the two surfaces because it would be virtually impossible to determine the actual contact of a non-ideal journal surface rotating against a non-ideal bearing surface.)
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FIG. 3 illustrates aninkjet printer 50.FIG. 4 showsinkjet printer 50 withcover 52 and other parts ofhousing 54 removed.FIG. 5 is a side elevation and partial section view ofinkjet printer 50. Referring toFIGS. 3-5 ,printer 50 includes acover 52 and ahousing 54. Asheet media tray 56 is positioned at the bottom ofprinter 50 along an opening 58 inhousing 54. Paper or otherprint media sheets 61 are stacked intray 56 for input toprinter 50 and printed sheets are output back through opening 58 overtray 56. A supportingsurface 60 helps suspend the trailing edge of the printed sheets overtray 56. -
Printer 50 includes achassis 62 that supports the operative components ofprinter 50.Chassis 62 represents generally those parts ofhousing 54 along with other structurally stable elements inprinter 50 that support the operative components ofprinter 50. Aprinthead carriage 64 is driven back and forth along aguide rail 66 mounted tochassis 62. Any suitable drive mechanism may be used to movecarriage 64. A reversing motor (not shown) coupled tocarriage 64 through a belt and pulley system (not shown), for example, is one carriage drive mechanism commonly used in inkjet printers. - Carriage 64 has stalls for holding one or
more printheads 68. In the printer shown inFIGS. 3-5 ,carriage 64 carries twoprintheads 68—one printhead containing color ink for color printing and one printhead containing black ink for monochrome printing. Printheads 68 are also commonly referred to as print cartridges or ink cartridges. As best seen inFIG. 5 ,printheads 68 are positioned along amedia path 70 such that each sheet ofprint media 61 passes directly underprintheads 68. The bottom of eachprinthead 68, which facesmedia sheet 61, includes an array of nozzles through which drops of ink are ejected ontomedia sheet 61. - An
electronic printer controller 72 receives print data from a computer, scanner, digital camera or other image generating device.Controller 72 controls the movement ofcarriage 64 back and forth acrossmedia sheet 61 and the advance ofmedia sheet 61 alongmedia path 70.Printer controller 72 is also electrically connected to printheads 68 through, for example, aflexible ribbon cable 74. Ascarriage 64 carriesprintheads 68 acrossmedia sheet 61,printer controller 72 selectively activates ink ejection elements inprintheads 68 according to the print data to eject ink drops through the nozzles ontomedia sheet 61. By combining the movement ofcarriage 64 acrossmedia sheet 61 with the movement ofsheet 61 alongmedia path 70,controller 72causes printheads 68 to eject ink ontomedia sheet 61 to form the desired print image. - A
top sheet 61 is “picked” from a stack of media sheets intray 56 and fed alongmedia path 70. When a sheet is needed for printing, pickroller 76 is driven clockwise at the direction ofcontroller 72 to grabtop sheet 61 and feed it alongmedia path 70 towardtransport rollers 78.Transport rollers 78 bear againstidler rollers 79 to form a nip that movessheet 61 along towardoutput rollers 80.Output rollers 80 bear againstidler arms 82 to form a nip that movessheet 61 onto sheetoutput supporting surface 60.Output rollers 80 are mounted on ashaft 84.Output rollers shaft 84 is mounted at each end tochassis 62.Output rollers shaft 84 is driven by amotor 86 through agear train 88. - One of the connections between
output rollers shaft 84 andchassis 62 is shown in detail inFIG. 6 .Output rollers shaft 84 is shown in detail inFIG. 7 . Thejournal bearings 90 and other components used to support the ends ofshaft 84 inchassis 62 are shown in detail inFIGS. 8-10 .Shaft 84 is aligned inFIG. 9 and misaligned inFIG. 10 . Referring toFIGS. 6-10 , each journal bearing 90 includes aspherical journal 92 integral with or affixed toshaft 84 and abearing 94 integral with or affixed to a mountingpart 96. Mountingpart 96 is sized and shaped to form or hold bearing 94 while mounting securely intochassis 62. Eachjournal 92 includes aspherical journal surface 98 that rotates against acylindrical bearing surface 100 on eachbearing 90. In the embodiment shown inFIG. 6-10 , bearingsurface 100 is defined by the inside surface of acylindrical bushing 102 pressed or over molded intobearing 94.E-clips 104 pushed intogrooves 106 onshaft 84, or another suitable retainer, holdbearings 90 in position onshaft 84.Splines 108 on one end ofshaft 84 provide an operative connection betweenshaft 84 and gear train 88 (FIG. 4 ). Forming bearingsurface 100 in abushing 102 discrete from the rest of bearing 90 and mountingpart 96 allows the use of dissimilar materials for these parts. For example, where the characteristics of the bearing surface/journal surface interface require a comparatively tough, wear resistant material, bearingsurface 100 can be formed in abushing 102 and the rest of bearing 94 and mountingpart 96 formed from a softer less expensive material. -
Carriage 64 andprintheads 68 along with other hardware components necessary to deliver ink to the print media are referred to collectively as a print engine. For laser printers or other image forming devices, the print engine will include those components needed to deliver toner or another marking material to the print media.Rollers printer 50 are referred to collectively as a media feed mechanism.Controller 72 includes the programming, processor and associated memory and electronic circuitry necessary to control the print engine, the feed mechanism, and the other operative components ofprinter 50. - The exemplary embodiments shown in the figures and described above illustrate but do not limit the invention. Other forms, details, and embodiments may be made and implemented. For example, embodiments of the invention are not limited to use in inkjet printers or even printers or printer media feed mechanisms, but may be use in many other devices and mechanisms. Hence, the foregoing description should not be construed to limit the spirit and scope of the invention, which is defined in the following claims.
Claims (11)
1. A bearing, comprising a cylindrical bearing surface supporting a spherical journal surface.
2. A bearing, comprising a spherical surface inside and rotatable against a cylindrical surface.
3. A bearing, comprising at least part of a sphere inside and rotatable against a cylinder.
4. A bearing, comprising a bearing surface supporting a journal surface along a line.
5. The bearing of claim 4 , wherein the bearing surface comprises a cylindrical bearing surface and the journal surface comprises a spherical journal surface.
6. A device, comprising a shaft having a spherical journal surface supported inside and rotatable against a cylindrical bearing surface.
7. A device, comprising a cylindrical bearing supporting a spherical journal.
8. A device, comprising a shaft, a first spherical journal on a first part of the shaft, a second spherical journal on a second part of the shaft, a first cylindrical bearing supporting the first journal and a second cylindrical bearing supporting the second journal.
9-14. (canceled)
15. A device, comprising:
a motor;
a rotatable shaft operatively coupled to the motor, the shaft having a spherical journal surface supported inside and rotatable against a cylindrical bearing surface; and
a roller affixed to the shaft.
16. A device, comprising:
a motor;
a rotatable shaft operatively coupled to the motor;
a first spherical journal on a first part of the shaft, a second spherical journal on a second part of the shaft, a first cylindrical bearing supporting the first journal and a second cylindrical bearing supporting the second journal; and
a roller affixed to the shaft between the journals.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/581,323 US20070086826A1 (en) | 2003-12-09 | 2006-10-16 | Bearing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/730,780 US7172352B2 (en) | 2003-12-09 | 2003-12-09 | Bearing |
US11/581,323 US20070086826A1 (en) | 2003-12-09 | 2006-10-16 | Bearing |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/730,780 Division US7172352B2 (en) | 2003-12-09 | 2003-12-09 | Bearing |
Publications (1)
Publication Number | Publication Date |
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US20070086826A1 true US20070086826A1 (en) | 2007-04-19 |
Family
ID=34634240
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/730,780 Expired - Fee Related US7172352B2 (en) | 2003-12-09 | 2003-12-09 | Bearing |
US11/581,323 Abandoned US20070086826A1 (en) | 2003-12-09 | 2006-10-16 | Bearing |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/730,780 Expired - Fee Related US7172352B2 (en) | 2003-12-09 | 2003-12-09 | Bearing |
Country Status (4)
Country | Link |
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US (2) | US7172352B2 (en) |
KR (1) | KR20050056148A (en) |
MX (1) | MXPA04007380A (en) |
SG (1) | SG112916A1 (en) |
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US7980554B2 (en) * | 2006-12-20 | 2011-07-19 | Lexmark International, Inc. | Friction backup roller for media picking |
US7927017B2 (en) * | 2007-01-22 | 2011-04-19 | Howe Racing Enterprises | Lower a-frame bushing assembly |
EP2302241B1 (en) * | 2007-11-27 | 2013-02-20 | JTEKT Corporation | Shaft apparatus with roller bearing |
US9192975B2 (en) * | 2009-01-30 | 2015-11-24 | Larry John Verbowski | Vehicle suspension module |
US8308366B2 (en) * | 2009-06-18 | 2012-11-13 | Eaton Industrial Corporation | Self-aligning journal bearing |
JP5622716B2 (en) * | 2011-12-28 | 2014-11-12 | 三菱重工業株式会社 | Planetary gear device and wind power generator |
JP6597137B2 (en) * | 2015-09-30 | 2019-10-30 | セイコーエプソン株式会社 | Printing device |
EP3890988A4 (en) | 2018-12-06 | 2022-09-28 | Hewlett-Packard Development Company, L.P. | Print media modes |
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US20030168122A1 (en) * | 2002-03-08 | 2003-09-11 | Shila Razlan | Hand planing machine |
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2003
- 2003-12-09 US US10/730,780 patent/US7172352B2/en not_active Expired - Fee Related
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2004
- 2004-07-30 MX MXPA04007380A patent/MXPA04007380A/en unknown
- 2004-08-02 SG SG200405261A patent/SG112916A1/en unknown
- 2004-12-08 KR KR1020040103047A patent/KR20050056148A/en not_active Application Discontinuation
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2006
- 2006-10-16 US US11/581,323 patent/US20070086826A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
MXPA04007380A (en) | 2005-10-26 |
KR20050056148A (en) | 2005-06-14 |
US7172352B2 (en) | 2007-02-06 |
SG112916A1 (en) | 2005-07-28 |
US20050123337A1 (en) | 2005-06-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |