US3895791A - Bottom sheet feeder using separation belt and retard pad - Google Patents
Bottom sheet feeder using separation belt and retard pad Download PDFInfo
- Publication number
- US3895791A US3895791A US342653A US34265373A US3895791A US 3895791 A US3895791 A US 3895791A US 342653 A US342653 A US 342653A US 34265373 A US34265373 A US 34265373A US 3895791 A US3895791 A US 3895791A
- Authority
- US
- United States
- Prior art keywords
- stack
- belt
- sheets
- sheet
- edge
- 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
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 23
- 238000004088 simulation Methods 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000012840 feeding operation Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001944 Plastisol Polymers 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- -1 e.g. Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000020030 perry Nutrition 0.000 description 1
- 239000004999 plastisol Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 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
- B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
- B65H3/523—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned over articles separated from the bottom of the pile
- B65H3/5238—Retainers of the pad-type, e.g. friction pads
-
- 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
- B65H3/04—Endless-belt separators
- B65H3/042—Endless-belt separators separating from the bottom of the pile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/42—Piling, depiling, handling piles
- B65H2301/423—Depiling; Separating articles from a pile
- B65H2301/4232—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles
- B65H2301/42322—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles from bottom of the pile
Definitions
- ABSTRACT A sheet separation belt is positioned at the bottom of a stack in a cut-away in the tray carrying the stack.
- the belt is carried by three rollers. One is located a distance from the edge of the stack. Another is located near the stack edge.
- a retard pad is biased against the belt between the second and third rollers.
- An infeed chute abutts or restrains the lead edge of the stack and is sloped to slope the stack. The slope generates a normal component between the stack and belt that enhances the feeding engagement.
- a blade is employed to clean contaminants from the belt.
- This invention relates to sheet feeding method and apparatus. More specifically, the present invention relates to a sheet feeder for a facsimile transceiver which is able to feed original documents from a stack when the transceiver is in a send mode and specially coated copy sheets when the transceiver is in a receive mode.
- the present sheet feeder is of the type disclosed in copending application Ser. No. 225,513, filed Feb. 1 1, 1972 in the name of Klaus K. Stange and assigned to the present assignee, now U.S. Pat. No. 3,768,803.
- the sheet feeding method and apparatus of the copending application are expressly incorporated in this application.
- the present sheet feeder is especially suited for facsimile machines operating on thermoelectric paper of the type described in U.S. Pat. No. 2,555,321, the disclosure of which is incorporated herein.
- the thermoelectric, paper may include a thermoplastic coating or the like to prevent curling located onthe side that is gripped by the sheet feeding mechanism.
- the thermoplastic coating offers a low energy surface that is slipperyl.making the sheets hard to feed.
- Bottom sheet feeding of documents and copy sheets to a facsimile machine is advantageous for compactness.
- a facsimile feeder of this type is disclosed in copending application Ser. No. 253,721, filed May 16, 1972, now U.S. Pat. No. 3,790,159, issued Feb. 5, 1974, assigned to the present assignee. The disclosure of this facsimile application is also expressly incorporated herein.
- Bottom sheet feeding is inherently difficult in any environment.
- One reason for the difficulty in the facsimile environment is the above-mentioned slippery nature of the copy sheets.
- Another reason for the difficulty is the normal force between the stack and'feeder effecting the frictional engagement for separation of the bottom'most sheet from the stack.
- Another object of the present invention is to enhance the effectiveness of sheet feeders operating in a bottom sheet feeding mode of the type including a separation belt for grasping a sheet near the edge of a stack and pullingthe sheet through a queuing throat formed by a retard pad biased against an unsupported length of the belt.
- Yet another object of the invention at hand is to prevent misfeeds and multiple feed of sheets from a stack to a facsimile transceiver. This means successfully feeding sheets of diverse composition, shape and condition to the transceiver when in a transmit mode and copy sheets with surfaces that make frictional engagement difficult to the transceiver when in a receive mode.
- Still another object of this invention is the maintenance of a generally constant normal force between the stack and feeder during feeding from the bottom of a stack or the equivalent thereof.
- a further object of the invention is to improve belt feeders by employing a blade member to clean the separation belt of contaminants.
- the above and other objects of the current invention are realized using, in a bottom sheet configuration, a separation belt positioned to contact the bottom most sheet in a stack for pulling the sheet into a queuing throat formed by biasing a retard pad against an unsupported sectionof the belt.
- the invention of hand distinguishes over the Stange feeder supra as well as those of the prior art including that disclosed in the Sturtevant U.S. Pat. No. 664,340 (1900), the Wells U.S. Pat. No. 1,167,367 (1916), the VanDalen U.S. Pat. No. 3,108,801 (1963) and the Lindquist U.S. Pat. No. 3,485,489 (1969).
- the distinquishing features include the facsimile environment, the composition of the sheets being fed, means for increasing frictional en gagement, means for establishing a normal force with a feeder and means for maintaining that normal force.
- the instant feeder includes a retard pad and separator belt carried by three belt support means or roller members. Adjacent the retard pad is an infeed chute which is at an angle relative to the separation belt giving rise to a normal force between the belt and stack when the belt is moving in the feed direction.
- the retard pad and infeed chute are mounted on a cantilevered member protruding over the stack.
- a weight is pivoted at the free end of the cantilever to simulate stack weight for feeding the last few sheets in a stack. Because the weight is pivoted it does not interfere with the insertion or withdrawal of a stack.
- the cantilever is rigidly fixed during feeding to bias the retard pad and belt against one another.
- the cantilever is rotatable about its fixed end to move the pad and chute out of the way to clear the area or bypass the feeder as might be desired when a single sheet is all that is being advanced to a transceiver or the like.
- One heretofore unknown and unappreciated element of this invention includes the third roller member placed near the edge of the stack and assisting in the biasing of the belt and retard pad against one another. Another such element is the angled infeed chute.
- the feeder of this invention is intended primarily for bottom feeding of comparatively small stacks composed of not greater than about to 200 sheets. It is designed to serve relatively low volume recorders such as employed in facsimile transceivers operating in the 1-6 minute per 8 /2 X 1 1 inch page speed range.
- the feeder must be compact and handle both documents and copy paper.
- the documents often include 20 pound bond paper and the ruffled physical shape of the documents and contaminants on them give rise to irregular stacks rendering sheet feeding very difficult.
- 2,555,321 mentioned at the outset, is more slippery on the non-recording side because of a thermoplastic coating, e.g., plastisol, or other suitable stiffening material such as protein that is capable of increasing the beam strength of a sheet. This tends to dietate that sheets be fed from the less slippery side, (i.e., the side having the greater coefficient of friction, and- /or having a lower surface energy state).
- packaging considerations may dictate that the sheet feeder be positioned relative to the stack and the transceiver such that the more slippery side be engaged by the feeder. This is the situation with the facsimile system in the above-mentioned application, Ser. No. 253,721.
- the present feeder is non-obvious for several reasons including the fact that it is able to operate on the above noted sheets from the wrong or more slippery sheet surface.
- the disparity in surface friction shows up further in the queuing throat.
- the queuing throat is the region formed between a retard means and a separation belt.
- the separation belt and retard means type of feeder normally require that the frictional force between the belt and outermost sheet in a stack be greater than the intersheet coupling forces and the frictional force between the retard means and the side of the sheet opposite that engaged with the belt. This condition is not automatically obtained when thermoelectric sheets or the like are fed with the slippery surface of the sheet facing the separation belt.
- the feeder includes the continuous elastic belt 11 and the synthetic rubber retard pad 12.
- a stack of sheets 15 is carried by the tray 16 and has its lead edge profiled to an angle of about 50 relative to the belt by the sloped infeed chute 17.
- the edge of the stack is profiled or sloped when the belt moves in the direction of sheet feed.
- the moving belt carries the stack against the chute and the incline or angle of the chute generates a force vector normal to the belt. This normal force enhances the feeding. Chute angles of 40 to 60 are satisfactory with the 50 angle presently being preferred.
- the separation belt is carried by three belt support means including the left idler roller or pulley 20, the intermediate idler roller 21 and the driven roller or pulley 22.
- the shaft of roller 22 is coupled by appropriate drive means for effecting movement of the belt 11 around the rollers in the direction of sheet feed.
- the scraper blade 25 is a stiff member biased against belt 11 to scrape off dirt particles, paper fibers and other contaminants adhering to the belt.
- the blade includes a relatively sharp edge which is oriented against the direction of belt travel so as to bite into the belt for good cleaning action. The blade does minimal damage to the belt 11 while performing the cleaning action because it is biased against the belt in an unsupported belt region. Consequently, the belt can flex or stretch when necessary. Furthermore, because feeder 10 is designed for comparativelyflow volume sheet feeding operations, the blade has 'iro substantial detrimental effect on belt life. I
- the retardiimeans or pad 12 is fixedly coupled to the cantilever me'r nber 31.
- the infeed chute is also carried by the cantilever and comprises a metal sheet or plate extending transversely to the stack a distance adequate to profile the stack. The profiling or sloping of the lead edge of the stack is accomplished after the operator inserts a stack into the tray and the separation belt moves in the direction of feed as discussed above.
- the entrance 36 to the queuing throat is substantially straight or linear to avoid any notches or the like in which the edges of sheets can be trapped.
- the free end 32 of the cantilever extends over the stack and is of a height above the tray to more than adequately accommodate the maximum stack height.
- the weight 33 is pivotedly suspended from the free'end and rests on the top of the stack. This weight isnot intended to significantly affect the normal force between the" stack 15 and the beltll. Weight 33 is present so the last few sheets in a stack have some external compo ⁇ nent exerted on them to enhance feeding engagement with the separation belt.
- the weight is shaped in the form of the letter L and pivoted near the end of the short leg of the L in order that the weight will not interfere with the insertion or the withdrawal of sheets from the tray vl6.
- the fixed end 34 of the cantilever is normally locked against movement. The result is that the retard pad is held biased against the separation belt.
- the fixed end can be unlocked, however, and the entire cantilever can be pivoted upward to allow access to the region around the queuing throat.
- the intermediate. roller 21 is positioned under the stack near the edge and supports the belt in a manner enabling the retard pad to be biased against the belt near the stack edge to form the sheet queuing throat.
- the Stange application supra should be consulted for a detailed description of the queuing throat operation. It is enough here to say that multiple sheets are not able to pass through the throat resulting in a queuing .of the sheets in their order as arranged in the stack.
- the throat gives rise to a seriatim feeding of sheets.
- the moving belt must exert a greater force on a sheet than the. retard pad.
- the surface area of the separation belt making edge contact is increased by extending the belt a distance from the edge.
- the intermediate roller 21 engages the belt with the stack near the edge and the left roller 20 engages the belt with the stack at a distance further in from the edge. This means the surface area for engagement between the belt and stack is increased compared to that in feeders like the Stange feeder thereby permitting more feeding engagement between the belt and the outermost sheet in the stack.
- the infeed chute diverts the force exerted 'on the entire stack by the belt into a vertical or normal component that is substantially independent of sheet composition or of stack size.
- the normal force arising due to the sloped infeed chute increases thefe'eding engagement between the outermost sheet and the belt especially at a location over the intermediate roller 21.
- the reason for the increased feeding engagement is related to the fact that frictional force is proportional to the force normal to the surfaces in frictional engagement.
- the feeding operation is especially successful when the normal force between the belt 11 and the retard pad 12 is adjusted from about 0.85 to 0.95 pounds.
- the pull through force i.e., the force required to pull a sheet of pound bond paper through the queuing throat with the belt at rest, should be in the range of from about 2.6 pounds to about 3.0 pounds.
- a minimum drive-in force of 0.4 pounds has been identified as yielding superior feeding results.
- the drive-in force is that exerted on the trailing edge of a single sheet of material capable of stalling the sheet in the queuing throat with the belt in motion.
- the width of the retard pad is very small compared to the width of a sheet. The same is true of the belt. For greater detail on their relative size see the Stange application.
- the tray 16 includes a cut-away portion to enable the separation belt to contact the bottom most sheets in the stack.
- Sheet feeding apparatus for feeding and separating individual sheets from a stack of sheets comprising an endless sheet separation belt including a section carried in the direction of feed by at least three belt support means. said first belt support means positioned a distance from the edge of the stack and the second positioned opposite the stack near said edge with the first and second belt support means locating the belt between them for feeding engagement with said stack of sheets,
- retard means including a fixedly mounted friction pad positioned adjacent said stack edge between second and third belt support means and biased against the belt to form a sheet queuing throat, and
- an infeed chute adjacent said retard means and angled relative to the stack to slope the sides of the stack to create a normal force between the stack and a region of the belt adjacent the second belt support means
- said retard means and said infeed chute being carried by a cantilever member fixedly mounted to bias the retard means and belt against one another, said cantilever member extending over the stack of sheets and including a weight pivotally coupled thereto for exerting a force on the last few sheets in the stack requiring a simulation of stack weight for feeding engagement with the separation belt.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US342653A US3895791A (en) | 1973-03-19 | 1973-03-19 | Bottom sheet feeder using separation belt and retard pad |
CA189,737A CA1007255A (en) | 1973-03-19 | 1974-01-09 | Bottom sheet feeder using separation belt and retard pad |
DE19742408727 DE2408727A1 (de) | 1973-03-19 | 1974-02-22 | Einrichtung zum transport des unterblatts eines blattstapels mittels transportriemen und halteklotz |
JP49028465A JPS49120365A (enrdf_load_stackoverflow) | 1973-03-19 | 1974-03-12 | |
GB1157174A GB1443089A (en) | 1973-03-19 | 1974-03-15 | Sheet feeder |
BR2080/74A BR7402080D0 (pt) | 1973-03-19 | 1974-03-18 | Aperfeicoamento em aparelho para alimentacao de folhas individuais do fundo de uma pilha de folhas |
FR7409306A FR2222291B1 (enrdf_load_stackoverflow) | 1973-03-19 | 1974-03-19 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US342653A US3895791A (en) | 1973-03-19 | 1973-03-19 | Bottom sheet feeder using separation belt and retard pad |
Publications (1)
Publication Number | Publication Date |
---|---|
US3895791A true US3895791A (en) | 1975-07-22 |
Family
ID=23342713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US342653A Expired - Lifetime US3895791A (en) | 1973-03-19 | 1973-03-19 | Bottom sheet feeder using separation belt and retard pad |
Country Status (7)
Country | Link |
---|---|
US (1) | US3895791A (enrdf_load_stackoverflow) |
JP (1) | JPS49120365A (enrdf_load_stackoverflow) |
BR (1) | BR7402080D0 (enrdf_load_stackoverflow) |
CA (1) | CA1007255A (enrdf_load_stackoverflow) |
DE (1) | DE2408727A1 (enrdf_load_stackoverflow) |
FR (1) | FR2222291B1 (enrdf_load_stackoverflow) |
GB (1) | GB1443089A (enrdf_load_stackoverflow) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2539405A1 (de) * | 1974-09-05 | 1976-03-18 | Xerox Corp | Blattfoerdervorrichtung mit veraenderbarer spaltkraft |
US4174102A (en) * | 1977-07-01 | 1979-11-13 | Xerox Corporation | Sheet separating and feeding apparatus |
US4579332A (en) * | 1983-09-06 | 1986-04-01 | The Mead Corporation | Bottom level sheet feeding apparatus |
EP0185862A3 (de) * | 1984-12-22 | 1988-01-27 | Professor Alfred Krauth Apparatebau GmbH und Co. KG | Ausgeber für Einzelausgabe von Banknoten |
US5062602A (en) * | 1990-08-24 | 1991-11-05 | Xerox Corporation | Double feeding prevention in a bottom sheet document feeder |
US5211388A (en) * | 1992-06-03 | 1993-05-18 | Xerox Corporation | Retard roll enhancement |
US5316284A (en) * | 1991-07-03 | 1994-05-31 | Minnesota Mining And Manufacturing Company | Device for feeding single sheets out of a stack of film sheets |
US5350168A (en) * | 1992-03-26 | 1994-09-27 | Xerox Corporation | Corrugated fang for multi media feeder |
US20030141650A1 (en) * | 2001-12-24 | 2003-07-31 | Neopost Industrie | Device for selecting mail items |
US20090315245A1 (en) * | 2007-12-05 | 2009-12-24 | Tratar David B | Document processing assembly |
DE102011007994A1 (de) | 2011-01-04 | 2012-07-05 | Horst Rathert | Bogenvereinzelungseinrichtung insbesondere für Verarbeitung von porösen Papierbogen |
US8702090B2 (en) | 2011-10-31 | 2014-04-22 | Francotyp-Postalia Gmbh | Modular placement device of a feed station |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4768771A (en) * | 1982-08-02 | 1988-09-06 | Xerox Corporation | Sheet feeder with retractable gate |
JPS59205694A (ja) * | 1983-05-09 | 1984-11-21 | 株式会社東芝 | 紙葉類取出装置 |
JPS6026535A (ja) * | 1983-07-24 | 1985-02-09 | Canon Inc | シ−ト材の給送装置 |
JPS6078332U (ja) * | 1983-11-04 | 1985-05-31 | グローリー工業株式会社 | 紙葉類収納繰出し装置 |
CN110950113A (zh) * | 2019-12-10 | 2020-04-03 | 上栗县金山镇中学 | 一种分页机构 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US707220A (en) * | 1901-11-15 | 1902-08-19 | Elliott & Hatch Book Typewriter Company | Feeding attachment for type-writing machines. |
US1018060A (en) * | 1909-08-02 | 1912-02-20 | Int Postal Supply Co | Printing mechanism. |
US2551123A (en) * | 1946-05-10 | 1951-05-01 | Nat Steel Corp | Belt cleaning device |
US3219339A (en) * | 1962-07-25 | 1965-11-23 | Fmc Corp | Article separating apparatus |
US3239213A (en) * | 1964-01-02 | 1966-03-08 | Xerox Corp | Document feeder |
US3596901A (en) * | 1969-03-24 | 1971-08-03 | Licentia Gmbh | Sheet separator |
US3722667A (en) * | 1971-06-14 | 1973-03-27 | L Olson | Dual wiping device for a conveyor belt in which both wipers have a common pivotal support but operate independently of each other |
US3790159A (en) * | 1972-05-16 | 1974-02-05 | Xerox Corp | Automatic document handling device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR473585A (fr) * | 1914-05-22 | 1915-01-15 | Cross Paper Feeder Co | Perfectionnements aux appareils servant à alimenter de feuilles successives les presses à imprimer et autres machines |
DE1088792B (de) * | 1958-10-08 | 1960-09-08 | Jagenberg Werke Ag | Verfahren und Vorrichtung zum Zufuehren von aus einem Stapel vereinzelten Zuschnitten zu einer Papierverarbeitungsmaschine |
FR1239746A (fr) * | 1959-11-03 | 1960-08-26 | Affranch & Timbrage | Transporteur pour l'alimentation des machines automatiques notamment machine à affranchir, à dater, à repérer ou autres |
IL34073A (en) * | 1969-03-19 | 1972-09-28 | Ward C | Conveyor belt cleaning apparatus |
-
1973
- 1973-03-19 US US342653A patent/US3895791A/en not_active Expired - Lifetime
-
1974
- 1974-01-09 CA CA189,737A patent/CA1007255A/en not_active Expired
- 1974-02-22 DE DE19742408727 patent/DE2408727A1/de not_active Ceased
- 1974-03-12 JP JP49028465A patent/JPS49120365A/ja active Pending
- 1974-03-15 GB GB1157174A patent/GB1443089A/en not_active Expired
- 1974-03-18 BR BR2080/74A patent/BR7402080D0/pt unknown
- 1974-03-19 FR FR7409306A patent/FR2222291B1/fr not_active Expired
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US707220A (en) * | 1901-11-15 | 1902-08-19 | Elliott & Hatch Book Typewriter Company | Feeding attachment for type-writing machines. |
US1018060A (en) * | 1909-08-02 | 1912-02-20 | Int Postal Supply Co | Printing mechanism. |
US2551123A (en) * | 1946-05-10 | 1951-05-01 | Nat Steel Corp | Belt cleaning device |
US3219339A (en) * | 1962-07-25 | 1965-11-23 | Fmc Corp | Article separating apparatus |
US3239213A (en) * | 1964-01-02 | 1966-03-08 | Xerox Corp | Document feeder |
US3596901A (en) * | 1969-03-24 | 1971-08-03 | Licentia Gmbh | Sheet separator |
US3722667A (en) * | 1971-06-14 | 1973-03-27 | L Olson | Dual wiping device for a conveyor belt in which both wipers have a common pivotal support but operate independently of each other |
US3790159A (en) * | 1972-05-16 | 1974-02-05 | Xerox Corp | Automatic document handling device |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3966189A (en) * | 1974-09-05 | 1976-06-29 | Xerox Corporation | Toggling retard pad |
DE2539405A1 (de) * | 1974-09-05 | 1976-03-18 | Xerox Corp | Blattfoerdervorrichtung mit veraenderbarer spaltkraft |
US4174102A (en) * | 1977-07-01 | 1979-11-13 | Xerox Corporation | Sheet separating and feeding apparatus |
US4579332A (en) * | 1983-09-06 | 1986-04-01 | The Mead Corporation | Bottom level sheet feeding apparatus |
EP0185862A3 (de) * | 1984-12-22 | 1988-01-27 | Professor Alfred Krauth Apparatebau GmbH und Co. KG | Ausgeber für Einzelausgabe von Banknoten |
US5062602A (en) * | 1990-08-24 | 1991-11-05 | Xerox Corporation | Double feeding prevention in a bottom sheet document feeder |
US5316284A (en) * | 1991-07-03 | 1994-05-31 | Minnesota Mining And Manufacturing Company | Device for feeding single sheets out of a stack of film sheets |
US5350168A (en) * | 1992-03-26 | 1994-09-27 | Xerox Corporation | Corrugated fang for multi media feeder |
US5211388A (en) * | 1992-06-03 | 1993-05-18 | Xerox Corporation | Retard roll enhancement |
US20030141650A1 (en) * | 2001-12-24 | 2003-07-31 | Neopost Industrie | Device for selecting mail items |
US6971645B2 (en) * | 2001-12-24 | 2005-12-06 | Neopost Industrie | Device for selecting mail items |
US20090315245A1 (en) * | 2007-12-05 | 2009-12-24 | Tratar David B | Document processing assembly |
US20090315244A1 (en) * | 2007-12-05 | 2009-12-24 | Tratar David B | Document feeder flag assembly |
US8025286B2 (en) * | 2007-12-05 | 2011-09-27 | Burroughs Payment Systems, Inc. | Document feeder flag assembly |
US8079584B2 (en) * | 2007-12-05 | 2011-12-20 | Burroughs Payment Systems, Inc. | Document processing assembly |
DE102011007994A1 (de) | 2011-01-04 | 2012-07-05 | Horst Rathert | Bogenvereinzelungseinrichtung insbesondere für Verarbeitung von porösen Papierbogen |
US8702090B2 (en) | 2011-10-31 | 2014-04-22 | Francotyp-Postalia Gmbh | Modular placement device of a feed station |
Also Published As
Publication number | Publication date |
---|---|
GB1443089A (en) | 1976-07-21 |
FR2222291A1 (enrdf_load_stackoverflow) | 1974-10-18 |
CA1007255A (en) | 1977-03-22 |
JPS49120365A (enrdf_load_stackoverflow) | 1974-11-18 |
DE2408727A1 (de) | 1974-10-03 |
BR7402080D0 (pt) | 1974-11-19 |
FR2222291B1 (enrdf_load_stackoverflow) | 1978-01-06 |
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