USRE38212E1 - Sheet feeding device - Google Patents
Sheet feeding device Download PDFInfo
- Publication number
- USRE38212E1 USRE38212E1 US09/900,568 US90056801A USRE38212E US RE38212 E1 USRE38212 E1 US RE38212E1 US 90056801 A US90056801 A US 90056801A US RE38212 E USRE38212 E US RE38212E
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- US
- United States
- Prior art keywords
- sheet
- feed
- housing
- separation
- roller
- 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.)
- Expired - Lifetime
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- 238000000926 separation method Methods 0.000 claims abstract description 142
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 8
- 230000003213 activating effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 230000032258 transport Effects 0.000 description 42
- 238000003384 imaging method Methods 0.000 description 5
- 239000002783 friction material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/52—Friction retainers acting on under or rear side of article being separated
- B65H3/5246—Driven retainers, i.e. the motion thereof being provided by a dedicated drive
- B65H3/5253—Driven retainers, i.e. the motion thereof being provided by a dedicated drive the retainers positioned under articles separated from the top of the pile
- B65H3/5261—Retainers of the roller type, e.g. rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/02—Separating articles from piles using friction forces between articles and separator
- B65H3/06—Rollers or like rotary separators
- B65H3/0669—Driving devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2403/00—Power transmission; Driving means
- B65H2403/70—Clutches; Couplings
- B65H2403/72—Clutches, brakes, e.g. one-way clutch +F204
- B65H2403/724—Clutches, brakes, e.g. one-way clutch +F204 electromagnetic clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/50—Occurence
- B65H2511/51—Presence
- B65H2511/514—Particular portion of element
Definitions
- This invention relates to a sheet feeding device for separating the outermost sheet from a stack of sheets. More specifically, it relates to a sheet feeding device for use in an imaging transport such as a fax, copier or scanner.
- Document originals often vary in size, weight, age and condition. However, nearly all document handlers presently on the market come with instructions not to feed originals of unusual weight or of poor condition. A feeder which can handle a wide variety of types of originals would also be desirable.
- Document feeders for sheet materials typically consist of three basic elements, commonly an urging means such as a roller or belt, a feed means such as a roller or belt, and a retard means or separation device.
- the urging means imparts a force to the sheet being fed and directs it into the feed means.
- the feed means transports the sheet to the imaging transport path.
- the retard means is intended to hold back the other sheets in the stack so that only one sheet is fed into the imaging means at one time.
- a sheet feeding device which includes a sheet transport means, a feed means, a separation means, and a clutch means.
- the device is useful for separating an outermost sheet from a stack.
- the feed means is for feeding the outermost sheet from the stack and is positioned so as to frictionally contact the outermost sheet to advance the outermost sheet toward the sheet transport means.
- the separation means is positioned adjacent to the feed means to prevent double feeding along a sheet path between the feed means and the separation means. A nip is defined between the separation means and the feed means.
- the clutch means is in operable association with the feed means and is for transmitting an intermittent drive force to the feed means.
- the sheet transport means includes a trailing edge sensing means and a leading edge sensing means.
- the trailing edge sensing means is for sensing when a trailing edge of the outermost sheet is positioned downstream of the nip and activating the clutch means in response thereto.
- the leading edge sensing means is for sensing when a leading edge of the outermost sheet is positioned downstream of a first transport roller of the sheet transport means and deactivating the clutch means in response thereto.
- a sheet feeding device which comprises a feed means, a separation means, a clutch means, and a retraction means.
- the sheet feeding device is for separating an outermost sheet from a stack.
- the feed means is for feeding the outermost sheet.
- the feed means is positionable in frictional contact with the stack to advance the outermost sheet toward the sheet transport means.
- the separation means is positioned adjacent to the feed means to prevent double feeding of sheets along a sheet path between the feed means and the separation means. A nip is defined between the feed means and the separation means.
- the separation means includes an internally braked separation roller.
- the clutch means is in operable association with the feed means and is for transmitting an intermittent drive force to the feed means.
- the retraction means is for retracting the separation means away from the sheet path.
- the retraction means is coupled to the separation means.
- a sheet feeding device comprising a stack support means, a feed module, a separation means, a drive means, a clutch means and a sheet transport means.
- the sheet feeding device is for separating an outermost sheet from a stack.
- the stack support means is for supporting a stack positioned in a first portion of a housing.
- the feed module is detachably and pivotally mounted to a second portion of the housing for positioning in contact with the stack.
- the feed module includes urging means and a feed means.
- the urging means is mounted in the feed module using an infeed shaft.
- the feed means is mounted in the feed module using a feed roller shaft.
- the separation means is detachably mounted to the first portion of the housing by a support means.
- the separation means is positioned adjacent to the feed means to define a nip between the separation means and the feed means.
- the drive means is for driving the feed module.
- the drive means is mounted in the second portion of the housing.
- the clutch means is connected to the drive means for transmitting an intermittent drive force from the drive means to the feed module.
- the sheet transport means is mounted to the housing for receiving an outermost sheet from the feed means.
- the sheet transport means includes a series of transport rollers, a trailing edge sensing means, and a leading edge sensing means. The series of transport rollers is for receiving an outermost sheet from the feed means.
- the trailing edge sensing means is for detecting a trailing edge of the outermost sheet and is positioned downstream of the nip, so that the clutch means is activated when the trailing edge of the outermost sheet is detected by the trailing edge sensing means.
- the leading edge sensing means is for detecting a leading edge of the outermost sheet.
- the leading edge sensing means is positioned downstream of a first transport roller, so that the clutch means is deactivated when the leading edge of the outermost sheet is detected by the leading edge sensing means.
- a sheet feeding device which comprises a stack support means, a feed module, a separation means, a sheet transport means, a drive means, a clutch means, and a retraction means.
- the sheet feeding device is for separating an outermost sheet from a stack.
- the stack support means is disposed in a first portion of a housing.
- the feed module is detachably mounted to a second portion of the housing so as to be positionable in contact with the stack.
- the feed module includes an urging means mounted in the feed module by an infeed shaft; and a feed means mounted in the feed module by a feed roller shaft.
- the separation means is detachably mounted to the first portion of the housing by a support means and is positionable adjacent to the feed module, so as to define a nip between the feed module and the separation means.
- the sheet transport means is mounted to the housing and is for receiving an outermost sheet from the feed means.
- the drive means is mounted to the housing for driving the sheet transport means and the feed module.
- the clutch means is connected to the drive means and is for transmitting an intermittent drive force from the drive means to the feed module.
- the retraction means is for retracting the separation means away from the feed module.
- the retraction means is coupled to the separation means.
- the separation means comprises an internally braked separation roller.
- a method for feeding an outermost sheet from a stack through a sheet feeding device comprises placing a stack on a sheet feeding device; urging an outermost sheet on top of the stack forward using a feed module; separating the outermost sheet from the stack using a separation means; and transporting the outermost sheet through a sheet transport means.
- the advantage is to control the feed module by an electromechanical clutch driven by a drive means.
- the above described embodiments provide a sheet feeding device that is reliable, inexpensive and easy to service and use with all types of documents.
- the above described embodiments also provide for retracting the separation means out of the sheet path.
- This design allows the user to manually feed fragile or stapled documents through the device without any interference with the separation means.
- the separation means preferably has an internally braked separation roller thus eliminating the requirement of a complex drive system making it easier to remove and clean the internally braked separation roller.
- the drive means is preferably modular, and is easily removed and serviced. Use of the electronically actuatable clutch permits the sheet to be pulled through the transport rollers with the feed means deactivated. By deactivating the feed means in this manner, the likelihood of paper jams can be reduced.
- FIG. 1 is a cross-sectional view of the sheet feeding device
- FIG. 2 is a pictorial view of the claimed invention with the housing in an open position
- FIG. 3 is an exploded view of the feed module
- FIG. 4 is an exploded view of the feed module and the separation means
- FIG. 5 is a pictorial view of the separation means
- FIG. 6 is a pictorial view of the feed module
- FIG. 7 is a pictorial view of the retraction means
- FIG. 8 is a back cutaway view of the sheet feeding device.
- a sheet feeding device 2 for separating an outermost sheet 4 from a stack 6 shown in FIGS. 1 and 2.
- the outermost sheet 4 is the topmost sheet.
- the sheet feeding device 2 comprises a stack support means 8 , disposed in a first portion 10 of a housing 12 , and a feed means, preferably a feed module 14 , detachably mounted in a second portion 16 of the housing 12 so as to be positionable in contact with the stack 6 .
- the feed module 14 preferably includes an urging means 18 , shown in FIG. 3, mounted in the feed module 14 using an infeed shaft 20 and a feed means 22 mounted in the feed module 14 using a feed roller shaft 24 .
- a separation means 26 is detachably mounted to the first portion 10 of the housing 12 using a support means 28 .
- the separation means 26 is positioned adjacent to the feed means 22 so as to define a nip therebetween.
- a sheet transport means 117 for receiving an outermost sheet from the feed means 22 is attached to both the first portion 10 and the second portion 16 of the housing 12 as shown in FIG. 1.
- a sheet path 30 is preferably defined between the separation means 26 and the feed means 22 and the first portion 10 and the second portion 16 of the housing 12 .
- a drive means 32 for driving the feed module 14 is mounted in the second portion 16 of the housing 12 as shown in FIG. 8 .
- a clutch means 90 connected to the drive means 32 for transmitting an intermittent drive force to the feed module 14 .
- the second portion 16 of the housing 12 defines an indent 34 , shown in FIG. 6, for housing the feed module 14 adjacent to the stack support means 8 .
- the indent 34 is flanked by portions of the housing defining a drive shaft support means 36 and a support shaft support means 38 .
- the feed module 14 preferably comprises a feed module housing 40 having an upper portion 42 and a lower portion 44 .
- the feed module housing 40 preferably forms a first bearing 58 between the upper portion 42 and the lower portion 44 and a second bearing 60 between the upper portion 42 and the lower portion 44 .
- the feed module housing 40 is designed to hold the at least one urging roller 46 and the at least one feed roller 62 as well as to prevent dust from accumulating on the feed roller shaft 24 .
- the urging means 18 preferably has at least one urging roller 46 positioned on an urging roller hub 48 having a first one way bearing 50 positioned therein and mounted on an infeed shaft 20 .
- the infeed shaft 20 has a first end 52 and a second end 54 , and an infeed gear 56 positioned near the first end 52 of the infeed shaft.
- the second end 54 rests in the first bearing 58 formed by the feed module housing 40 and the first end 52 of the infeed shaft 20 rests in the second bearing 60 formed by the feed module housing 40 .
- the feed means 22 preferably comprises at least one feed roller 62 being positioned on a feed roller hub 64 having a second one way bearing 66 positioned therein.
- the at least one feed roller 62 is mounted on a feed roller shaft 24 .
- the feed roller shaft 24 has a first end 68 and a second end 70 .
- the first end 68 is attached to a self-centering coupling gear 72 that is in operable association with a drive shaft 74 .
- an idler gear 96 is positioned between and in operable association with the infeed gear 56 and the self-centering coupling gear 72 to transfer the drive from the self centering coupling gear 72 to the infeed gear 56 .
- the second end 70 of the feed roller shaft 24 preferably has a self-centering support hub 76 mounted thereon.
- the self-centering support hub 76 is received by a movable support shaft 78 having a compression spring 82 mounted thereon.
- the movable support shaft 78 is biased by the compression spring 82 toward the self-centering support hub 76 .
- the drive shaft 74 is rotatably carried by the drive shaft support means 36 and the movable support shaft 78 is slidably and rotatably carried by the support shaft support means 38 as shown in FIG. 6 .
- the feed roller shaft 24 has a longitudinal axis 98
- the feed module 14 is pivotable about the longitudinal axis 98 . This pivotability enables variation in the height of the stack placed on the stack support means 8 .
- the feed module 14 in the illustrated embodiment can accommodate a stack height of approximately 0.6 inches.
- the feed module 14 can be manually replaced by a user by moving the feed module 14 in the direction of the movable support shaft 78 , compressing the compression spring 82 and disengaging the coupling gear 72 from the drive shaft 74 . (see FIG. 6) This process can be executed in the reverse to install the feed module 14 in the sheet feeding device.
- the removal and installation of the feed module 14 is user friendly due to the fact that the feed module 14 is not directly coupled to a driver, which would make removal and installation cumbersome.
- the drive shaft 74 has a first end 84 and a second end 86 and a drive coupler 88 attached to the first end of said drive shaft 84 .
- the second end 86 is connected to the clutch means 90 for transmitting an intermittent drive force to the drive shaft 74 .
- the clutch means 90 can be an electronically actuatable clutch 91 such as an electromechanical clutch.
- the drive coupler 88 is axially engagable with the self-centering coupling gear 72 .
- the at least one urging roller 46 picks up the top or outermost sheet to be fed and urges it toward the at least one feed roller 62 .
- the at least one feed roller 62 then feeds the sheet to a first transport roller 111 that pulls the sheet through an imaging system such as a scanner or photocopy machine.
- At least one urging roller 46 can be decoupled from at least one feed roller 62 by the second one way bearing 66 so that when the electronically actuatable clutch 91 is inactive, at least one urging roller 46 is not driven by movement of at least one feed roller 62 .
- the at least one urging roller 46 is only driven by the force of the sheet being fed, and once the trailing edge 134 of the outermost sheet passes the at least one urging roller 46 , the at least one urging roller 46 ceases movement. This use of rollers with one way bearings, keeps unwanted sheets from being fed too soon, thus reducing the chance of sheets being misfed or bunching up.
- At least one urging roller 46 and at least one feed roller 62 can both be decoupled from the infeed shaft 20 and the feed roller shaft 24 by the first one way bearing 50 and the second one way bearing 66 , so that the series of transport rollers 110 can rotate at a faster rate than the rotation rate of at least one feed roller 62 and at least one urging roller 46 without causing excess tension (an amount of tension that could result in damage to a sheet) on a fed sheet.
- the at least one feed roller 62 and at least one urging roller 46 rotate freely about the infeed shaft 20 and the feed roller shaft 24 in the direction of the sheet transport means.
- the separation means 26 comprises an internally braked separation roller 100 mounted on a pivot shaft 102 as shown in FIG. 5 .
- the pivot shaft 102 is detachably mounted on the support means 28 , preferably by a snap fit.
- the support means 28 is pivotable about a pivot axis 104 and is biased toward the at least one feed roller 62 by a spring means 106 .
- the separation means 26 keeps underlying sheets from being fed into the sheet feeding device too soon.
- the internally braked separation roller 100 is a roller with an internal braking means (not shown) such as a commercially available magnetic clutch, passive, not actively driven, positioned therein. Use of a magnetic clutch is less expensive and more reliable than the commonly used spring wrap clutch.
- the internally braked separation roller 100 can have a core overlaid with a soft compliant material 128 that is coated with a material 129 having a high coefficient of friction, such as is described in U.S. Pat. No. 5,190,277 to Rahman and incorporated by reference herein.
- the high coefficient of friction material 129 described in U.S. Pat. No. 5,190,277 is a silicone elastomer having a Shore/durometer of less than 35.
- the sheet transport means 117 is for receiving an outermost sheet from the feed means 22 .
- the sheet transport means 117 preferably includes a frame means having a series of transport rollers 110 mounted in the second portion 16 of the housing 12 and a frame means having series of opposing idler rollers 112 mounted in the first portion 10 of the housing 12 , as well as a trailing edge sensing means 114 and a leading edge sensing means 116 . (See FIG. 1)
- the trailing edge sensing means 114 detects a trailing edge 134 of the outermost sheet 4 and is positioned downstream of the nip, so that the electronically actuatable clutch 91 is activated when the trailing edge 134 of the outermost sheet is detected by the trailing edge sensing means 114 .
- the leading edge sensing means 116 positioned downstream of a first transport roller 111 and is used to detect a leading edge 136 of the outermost sheet, so that the electronically actuatable clutch 91 is deactivated when the leading edge 136 of the outermost sheet is detected by the leading edge sensing means 116 .
- a sheet feeding device 2 for separating an outermost sheet 4 from a stack 6 having a stack support means 8 disposed in a first portion 10 of a housing 12 , a feed module 14 with an urging means 18 and a feed means 22 , and a separation means 26 as described above.
- a sheet transport means 117 for receiving an outermost sheet 4 from the feed means 22 mounted in the second portion 16 of the housing 12 and a retractions means 118 for retracting the separation means 26 out of a sheet path 30 .
- the retraction means 118 is coupled to the separation means 26 .
- the second portion 16 of the housing 12 comprises a panel means 120 defining an opening 121 therein.
- the panel means 120 further defines a door 122 for partially covering the opening.
- the separation means 26 is positioned within the opening 121 so that when the door 122 is in a closed position, the internally braked separation roller 100 is partially covered. (See FIG. 2)
- the separation means 26 can be an internally braked separation roller 100 having an internal braking means (not shown) positioned therein as described previously.
- the internally braked separation roller 100 is mounted on a pivot shaft 102 .
- the support means 28 described above preferably comprises a yoke 124 pivotally mounted in the first portion 10 of the housing 12 .
- the yoke 124 defines a pair of slots 126 therein for removably receiving the pivot shaft 102 .
- the yoke 124 also defines a pivot axis 104 which it pivots about when actuated by the retraction means 118 .
- the retraction means 118 can include an actuator means 130 for causing the yoke 124 to pivot about the pivot axis 104 away from the feed module 14 .
- the sheet transport means 117 preferably has a series of transport rollers 110 mounted in the second portion 16 of the housing 12 and a series of opposing idler rollers 112 mounted in the first portion 10 of the housing 12 .
- the sheet transport means also preferably includes a trailing edge sensing means 114 , and a leading edge sensing means 116 .
- the trailing edge sensing means 114 is positioned downstream of the nip and detects the trailing edge 134 of the outermost sheet, so that the electronically actuatable clutch 91 is activated when the trailing edge 134 of the outermost sheet is detected by the trailing edge sensing means 114 .
- the leading edge sensing means 116 is positioned downstream of the first transport roller 111 and detects a leading edge 136 of the outermost sheet, so that the electronically actuatable clutch 91 is deactivated when the leading edge 136 of the outermost sheet is detected by the leading edge sensing means 116 . Intermittently activating and deactivating the clutch means 90 in this manner allows the sheet feeding device 2 to effectively feed one sheet at a time and reduces the number of multifeeds.
- the first portion 10 of the housing 12 disengages from and pivots away from the second portion 16 of the housing 12 , exposing the separation means 26 and the sheet transport means 117 . (See FIG. 2)
- This feature allows the user to easily access the sheet path 30 to clear any paper jams that may occur and service the machine if needed.
- the internally braked separation roller 100 can also be easily accessed from this position. The user can lift the door 122 to an open position as shown in FIG. 2 and pull the internally braked separation roller 100 out of the slots 126 in the support means 28 with little effort.
- a method for feeding an outermost sheet 4 from a stack 6 through a sheet feeding device 2 comprises placing a stack on a sheet feeding device as described above, having a feed module 14 detachably mounted on a first portion 10 of a housing 12 and adapted to be positioned in contact with the stack 6 .
- a outermost sheet on top of the stack is urged forward using the feed module 14 .
- the outermost sheet is separated from the stack using a separation means 26 .
- the outermost sheet is transported by the transport rollers 110 .
- Driving of the feed module 14 is controlled by an electronically actuatable clutch 91 that is driven by a drive means 32 .
- the leading edge 136 of the outermost sheet is preferably sensed by the leading edge sensing means 114 and the electronically actuatable clutch 91 is deactivated.
- the sheet is pulled through the sheet transport means 117 by the transport rollers 110 , and the trailing edge 134 of the outermost sheet is preferably sensed by the trailing edge sensing means 116 .
- the electronically actuatable clutch 91 is then activated so that the next sheet in the stack can be picked up by the feed module 14 .
- the separation means 26 can be retracted away from the feed module 14 by the retraction means 118 disclosed previously.
- sheet feeding device 4. outermost sheet 6. stack 8. stack support means 10. first portion of a housing 12. housing 14. feed module 16. second portion of the housing 18. urging means 20. infeed shaft 22. feed means 24. feed roller shaft 26. separation means 28. support means 30. sheet path 32. drive means 34. indent 36. drive shaft support means 38. support shaft support means 40. feed module housing 42. upper portion of feed module housing 44. lower portion of feed module housing 46. urging roller 48. urging roller hub 50. one way bearing 56. infeed gear 52. infeed shaft first end 54. infeed shaft second end 58. first bearing 60. second bearing 62. feed roller 64. feed roller hub 66. second one way bearing 68. feed roller first end 70. feed roller second end 72.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
|
2. | |
4. | |
6. | |
8. | stack support means |
10. | first portion of a |
12. | |
14. | |
16. | second portion of the |
18. | urging means |
20. | |
22. | feed means |
24. | feed |
26. | separation means |
28. | support means |
30. | |
32. | drive means |
34. | |
36. | drive shaft support means |
38. | support shaft support means |
40. | |
42. | upper portion of |
44. | lower portion of |
46. | urging |
48. | urging |
50. | one |
56. | |
52. | infeed shaft |
54. | infeed shaft |
58. | |
60. | second bearing |
62. | feed |
64. | feed |
66. | second one |
68. | feed roller |
70. | feed roller |
72. | self-centering |
74. | drive |
76. | self-centering |
78. | |
82. | |
84. | drive shaft |
86. | drive shaft |
88. | |
90. | clutch means |
91. | electronically actuatable clutch |
96. | |
98. | |
100. | internally braked |
102. | |
104. | |
106. | spring means |
110. | series of |
111. | |
112. | series of |
114. | trailing edge sensing means |
116. | leading edge sensing means |
117. | sheet transport means |
118. | retraction means |
120. | panel means |
121. | opening |
122. | |
124. | |
126. | |
128. | |
129. | |
130. | actuator means |
132. | |
134. | trailing |
136. | leading edge |
Claims (41)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/900,568 USRE38212E1 (en) | 1997-03-26 | 2001-07-06 | Sheet feeding device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/825,037 US5921539A (en) | 1997-03-26 | 1997-03-26 | Sheet feeding device |
US09/900,568 USRE38212E1 (en) | 1997-03-26 | 2001-07-06 | Sheet feeding device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/825,037 Reissue US5921539A (en) | 1997-03-26 | 1997-03-26 | Sheet feeding device |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE38212E1 true USRE38212E1 (en) | 2003-08-12 |
Family
ID=25242967
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/825,037 Ceased US5921539A (en) | 1997-03-26 | 1997-03-26 | Sheet feeding device |
US09/900,568 Expired - Lifetime USRE38212E1 (en) | 1997-03-26 | 2001-07-06 | Sheet feeding device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/825,037 Ceased US5921539A (en) | 1997-03-26 | 1997-03-26 | Sheet feeding device |
Country Status (1)
Country | Link |
---|---|
US (2) | US5921539A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030047862A1 (en) * | 2001-09-11 | 2003-03-13 | Ryuta Komatsu | Sheet feeding apparatus |
US20090014945A1 (en) * | 2007-07-12 | 2009-01-15 | Kyocera Mita Corporation | Sheet-feeding mechanism, sheet-feeding device, and image forming apparatus |
US20110074087A1 (en) * | 2009-09-30 | 2011-03-31 | Brother Kogyo Kabushiki Kaisha | Sheet Feeding Device |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6203005B1 (en) | 1999-03-04 | 2001-03-20 | Bell & Howell Company | Feeder apparatus for documents and the like |
US6305684B1 (en) | 1999-03-04 | 2001-10-23 | Werner R. Lightner | Feed rollers with reversing clutch |
USD432163S (en) * | 1999-03-11 | 2000-10-17 | Eastman Kodak Company | Cabinetry enclosure for a business machine |
US6126160A (en) * | 1999-04-12 | 2000-10-03 | Eastman Kodak Company | Sheet feeding control for image reading device |
US6311972B1 (en) * | 2000-01-19 | 2001-11-06 | Xerox Corporation | High speed inverter and registration servo |
JP2001233491A (en) * | 2000-02-24 | 2001-08-28 | Murata Mach Ltd | Automatic sheet carrying device |
US6585252B1 (en) | 2000-03-02 | 2003-07-01 | Jim T. Russo | Semi-active clutch assembly |
US6588740B2 (en) | 2000-12-11 | 2003-07-08 | Eastman Kodak Company | Intelligent feeder |
US6831761B2 (en) | 2001-03-30 | 2004-12-14 | Eastman Kodak Company | Document scanner having a selectable range of resolutions with reduced processing |
US6750991B2 (en) | 2001-03-30 | 2004-06-15 | Eastman Kodak Company | Dynamic document feeder system and method for maximizing scanning throughput |
US6939279B2 (en) | 2001-05-01 | 2005-09-06 | Ten Cate Enbi | Tire for skew reducing roller |
US6764072B2 (en) * | 2001-06-13 | 2004-07-20 | Hewlett-Packard Development Company, L.P. | Sheet feeder roller assembly with stack damper |
US6651973B2 (en) * | 2001-06-13 | 2003-11-25 | Hewlett-Packard Development Company, L.P. | Sheet feeder with modular roller support and drive assembly |
US6666446B2 (en) * | 2001-06-13 | 2003-12-23 | Hewlett-Packard Development Company, L.P. | Replaceable roller bogie for document feeding apparatus |
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US20030047862A1 (en) * | 2001-09-11 | 2003-03-13 | Ryuta Komatsu | Sheet feeding apparatus |
US6830244B2 (en) * | 2001-09-11 | 2004-12-14 | Nisca Corporation | Sheet feeding apparatus |
US20090014945A1 (en) * | 2007-07-12 | 2009-01-15 | Kyocera Mita Corporation | Sheet-feeding mechanism, sheet-feeding device, and image forming apparatus |
US7866659B2 (en) * | 2007-07-12 | 2011-01-11 | Kyocera Mita Corporation | Sheet-feeding mechanism, sheet-feeding device, and image forming apparatus |
US20110074087A1 (en) * | 2009-09-30 | 2011-03-31 | Brother Kogyo Kabushiki Kaisha | Sheet Feeding Device |
US8109498B2 (en) * | 2009-09-30 | 2012-02-07 | Brother Kogyo Kabushiki Kaisha | Sheet feeding device |
Also Published As
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US5921539A (en) | 1999-07-13 |
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