US3917256A - Dual purpose sheet handling apparatus - Google Patents

Dual purpose sheet handling apparatus Download PDF

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Publication number
US3917256A
US3917256A US422822A US42282273A US3917256A US 3917256 A US3917256 A US 3917256A US 422822 A US422822 A US 422822A US 42282273 A US42282273 A US 42282273A US 3917256 A US3917256 A US 3917256A
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Prior art keywords
frame
sheet
roll
nip
axis
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Expired - Lifetime
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US422822A
Inventor
Charles J Kubasta
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Xerox Corp
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Xerox Corp
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Publication date
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Priority to US422822A priority Critical patent/US3917256A/en
Priority to CA210,620A priority patent/CA1014098A/en
Priority to NL7414259A priority patent/NL7414259A/en
Priority to GB4939274A priority patent/GB1475094A/en
Priority to DE19742454152 priority patent/DE2454152A1/en
Priority to FR7437716A priority patent/FR2253632B1/fr
Priority to JP1974145047U priority patent/JPS5536839Y2/ja
Application granted granted Critical
Publication of US3917256A publication Critical patent/US3917256A/en
Priority to CA350,506A priority patent/CA1129899B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/65Apparatus which relate to the handling of copy material
    • G03G15/6555Handling of sheet copy material taking place in a specific part of the copy material feeding path
    • G03G15/6579Refeeding path for composite copying
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/00362Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00417Post-fixing device
    • G03G2215/00421Discharging tray, e.g. devices stabilising the quality of the copy medium, postfixing-treatment, inverting, sorting
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/00362Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00417Post-fixing device
    • G03G2215/0043Refeeding path
    • G03G2215/00438Inverter of refeeding path
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/00362Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535Stable handling of copy medium
    • G03G2215/00679Conveying means details, e.g. roller

Definitions

  • ABSTRACT A pair of rollers defining a nip transporting sheets in a first direction for a first mode of operation.
  • a clutch operated drive belt rotates the frame supporting the rolls about an axis through the nip to invert the sheets for a second mode of operation.
  • a releasable latch serves to release and then stop the frame after rotation through an angle of about 180 for the second mode of operation.
  • the present invention is an improved sheet handling apparatus desirable for use with high speed copier/duplicators of all types including simplex and duplex systems. Generally speaking, this is accomplished by a sheet inverter including pinch rolls which when rotated on axis through the nip result in sheet inversion with trailing edge becoming leading edge. As a result sheet inversion is accomplished without a separate feed path or reversing the sheet drive.
  • FIG. 1 is a perspective view of a high speed copier/- duplicator system capable of duplex operation including an improved sheet handling apparatus according to the present invention
  • FIG. 2 is a schematic view illustrating the xerographic components of the copier/duplicator system
  • FIG. 3 is a side view of the sheet handling apparatus
  • FIG. 4 is a plan view of the sheet handling apparatus.
  • FIG. 1 shows a copier/duplicator system generally designated 2 including a copier machine 3, which is a high speed copier/duplicator capable of producing simplex or duplex copies at the option of a machine operator.
  • the copier machine 3 has a platen 4 for receiving documents to be reproduced, and a control panel 5 which includes various control knobs, buttons and switches for selecting various modes of operation such as simplex and duplex copies and the number of copies to be reproduced.
  • the copier/duplicator system includes sheet handling apparatus 8 which directs the copies into a sorter generally designated 6.
  • the copier/duplicator system includes an automatic xerographic apparatus which includes a photosensitive plate including a photoconductive layer 10 that is placed over a conductive backing.
  • the plate is formed in the shape of a drum 11 and the drum mounted upon a shaft 12 that is journaled for rotation in the machine frame.
  • the xerographic drum is rotated in the direction indicated so as to pass sequentially through a series of xerographic processing stations.
  • the photosensitive drum and the xerographic processing apparatus are driven at predetermined speed relative to each other from a drive system (not shown) and the operation thereof coordinated in order to produce proper cooperation of the various processing mechanisms.
  • the original, to be reproduced, is placed upon a transparent horizontally supported platen 4 and the original scanned by means ofa moving optical scanning system and to produce a flowing light image of the original.
  • the scanning system includes an elongated horizontal extended aperture lamp l5 and a movable lens element 18.
  • the lamp and lens element moves in coordination across the object supported upon the platen to focus successive incremental bans of illumination reflected from the object onto the moving drum surface at synchronous speeds therewith.
  • the optical path is folded by means of a pair of image mirrors l9 and 20 interposed between the lens and drum surface, the drum is first uniformly charged by means of a corona generator 13 positioned in charging station A. Under the influence of the flowing light image, the uniformly charged photoconductive surface is selectively dissipated in the non-image areas to form what is commonly known as a latent electrostatic image.
  • the latent electrostatic image is carried on the drum surface from the exposure station into the developing station C.
  • the developing station primarily is comprised of a developer housing 22 adapted to supported a supply of two-component developer material 21 therein.
  • the developer material is transported by means of a bucket system 23 from the bottom of the developer housing to an elevated position where the material is delivered into the active development zone.
  • the developer material is caused to flow downwardly in contact with the upwardly moving drum surface under closely controlled conditions wherein charged toner particles are attracted from the .developer mix into the image areas on the plate surface thus making the image visible.
  • the moving drum surface'next transports the developed xerographic image to a transfer station D. Cut sheets of final support material are also moved into the transfer station, the backside of the copy sheet is sprayed with an ion discharge from a transfer corotron 25 including on the sheet a charge having a polarity and magnitude sufficient to attract the toner material from the drum surface to the final support material. This induced charge also electrostatically tacks the final support material to the drum surface.
  • a stripper finger 28 is positioned downstream from the transfer corotron. The finger is arranged to move between the drum surface and the copy sheet and lifts the sheet from the drum surface and the copy sheet is directed along a predetermined path of travel into contact with a stationary vacuum transport 29.
  • the residual toner is transported on the drum surface into a cleaning station E where it is brought under the influence of cleaning corotron 30 adapted to neutralize the electrostatic charge tending to hold the residual toner to the drum surface.
  • the neutralized toner is mechanically cleaned from the drum surface by means of a brush or the like and the toner collected within a housing 31.
  • a conveyor moving in an endless loop through tubes 32 transport the collected residual toner back to the developer housing where it is deposited within the developer mix so that it can be once again reused in the xerographic developing process.
  • the copy sheet which has been removed from the drum surface after the transfer operation, is moved along stationary transport 29 into fusing station F.
  • the fuser 33 is basically made up of an upper fuser roll 34 and a lower fuser roll 35 mounted in operative relation to each other and arranged to coact so as to support a sheet of material in pressure driving contact therebetween.
  • the lower roll is heated. As the heated roll is rotated in the direction indicated, the heated surface of the lower roll is pressed into intimate contact with the image face of the support sheet. Mechanical and heat energy transported from the roll surface to the support sheet to permanently bond the toner particles to the support material.
  • the fixed copy sheet Upon leaving the fuser, the fixed copy sheet is passed through a curvalinear sheet guide system, generally referred to as 39, into cooperating advancing rolls 43 and 44. At this point, depending on the mode of operation selected, the copy sheet is either forwarded directly to the sorter or into upper supply tray 52 by means of a movable sheet guide 45 before entering the sheet handling apparatus 8. For simplex copying the copy sheet is advanced directly to the sheet handling apparaus 8 to invert the sheet before delivery to one of the trays of sorter 6 or the like.
  • a typical sorter is described in copending application Ser. No. 319,957, filed Dec. 29, 1972 now US. Pat; No. 3,788,640 and commonly assigned herewith.
  • the sheet handling apparatus 8 includes a frame 9 supporting rolls 101 and rolls 103 which receive copy sheets from the copier/duplicator and either inverts the copy sheets before ad vancing them to the tray assemblies or advances them directly to the tray asssemblies according to the mode of operation.
  • Rolls 101 are driven by a belt 110 rotating continually in a counter-clockwise direction for transporting the copy sheets S towards the sorter 6.
  • signals from a sheet sensor, as for example a lamp and photocell pair 111 trigger sheet handling apparatus 8 to enable the sheets S to be inverted prior to delivery to the sorter 6.
  • Signals serve to energize a clutch 115 engaging a belt 120 which rotates the frame carrying rolls 101 and 103 at the same speed and direction at which the rolls are turning.
  • signals to solenoid actuated latch 121 serves to release the frame enabling the rolls 101 and 103 to rotate on an axis. through the nip N. There is no apparent movement of the rolls.
  • Latch 121 re-engages the frame and the clutch is de-energized after 180 of the frame carrying the rolls. It will be appreciated that during rotation the sheet S is not advanced but wrapped around the rolls. As a result the trail edge of the sheet S becomes the lead edge and the top becomes the bottom of the sheet which accomplishes sheet inversion. The sheet is advanced towards feed rolls and 132 which feed it towards sorter 6. On the second sheet a similar operation occurs with rotation of the frame for a second This operation continues with a full 360 rotation for each two sheets.
  • the copy sheets are inverted or delivered directly without inversion to a sorter from a copy processor depending on whether simplex or duplex operation is used. It will be appreci ated that the sheet handling apparatus accomplishes the transport of the sheetswithout requiring a separate path or a reversing drive for sheet inversion.
  • an improved sheet handling apparatus comprising:
  • first and second roll means supported by said rotatable frame defining a nip for receiving copy sheets from a processor
  • first drive means for continuously driving said first roll means on its axis
  • second drive means for rotating said frame carrying said first and second roll means about an axis through said nip at substantially the same speed and in the same direction as that of said first roll means
  • control means to actuate said second drive means in response to signals to rotate said frame carrying said roll means about an angle of 180 about an axis trical signals actuate a solenoid operated latch released momentarily out of the path, of said frame.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Conveyance By Endless Belt Conveyors (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Counters In Electrophotography And Two-Sided Copying (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

A pair of rollers defining a nip transporting sheets in a first direction for a first mode of operation. A clutch operated drive belt rotates the frame supporting the rolls about an axis through the nip to invert the sheets for a second mode of operation. At the same time a releasable latch serves to release and then stop the frame after rotation through an angle of about 180* for the second mode of operation.

Description

United States Patent 1 Kubasta [4 1 Nov. 4, 1975 DUAL PURPOSE SHEET HANDLING APPARATUS [75] Inventor: Charles J. Kubasta, Plano, Tex.
[73] Assignee: Xerox Corporation, Stamford,
Conn.
[22] Filed: Dec. 7, 1973 [21] Appl. No.: 422,822
[52] US. Cl. 271/65; 198/239; 271/186 [51] Int. Cl. B6511 29/00; B65G 42/24 [58] Field of Search 198/239; 271/65, 186, 185
[56] References Cited UNITED STATES PATENTS 3/1957 Connell 198/239 3,610,397 10/1971 Bok 198/239 X 3,744,614 7/1973 Shooter et a1. 198/239 Primary ExaminerEvon C. Blunk Assistant ExaminerBruce H. Stoner, Jr.
[ ABSTRACT A pair of rollers defining a nip transporting sheets in a first direction for a first mode of operation. A clutch operated drive belt rotates the frame supporting the rolls about an axis through the nip to invert the sheets for a second mode of operation. At the same time a releasable latch serves to release and then stop the frame after rotation through an angle of about 180 for the second mode of operation.
4 Claims, 4 Drawing Figures Sheet1of3 3,917,256
U.S. Patent Nov. 4, 1975 FIG.
US. Patent N0v.4, 1975 Sheet2of3 3,917,256
Sheet 3 of 3 FIG. 4 v
US. Patent Nov. 4, 1975 DUAL PURPOSE SHEET HANDLING APPARATUS This invention relates to sheet handling apparatus and is especially for use with reproduction systems capable of producing simplex and duplex copies.
With advent of high sophisticated copier/duplicator systems there has been a growing concern for the rapid and reliable distribution and handling of the copy sheets in both simplex and duplex modes of operation. In the past sheet inverting devices principally used in handling of documents for recording on both sides as described, for example, in US. Pat. Nos. 3,408,140, 3,416,791, 3,561,865 and 3,227,444. Also it is known to turn cards and the like for copying as described, for example, in U.S. Pat. No. 2,901,246. While the existing devices are suitable for some applications they are not entirely satisfactory for high speed sophisticated reproduction machine capable of operating in simplex and duplex mode of operation.
The present invention is an improved sheet handling apparatus desirable for use with high speed copier/duplicators of all types including simplex and duplex systems. Generally speaking, this is accomplished by a sheet inverter including pinch rolls which when rotated on axis through the nip result in sheet inversion with trailing edge becoming leading edge. As a result sheet inversion is accomplished without a separate feed path or reversing the sheet drive.
It is-therefore a general object of the invention to improve the handling of sheets.
It is another object of this invention to enable inverting sheets without reversing the drive of the sheet transport.
It is still a further object of the invention to enhance the sorting of copy sheets in both simplex and duplex modes of operation.
It is still a further object of the invention to achieve sheet inversion in a simple and reliable manner.
The above and added advantages of the present invention will be more apparent after reading the following detailed description which refers to accompanying drawings in which:
FIG. 1 is a perspective view of a high speed copier/- duplicator system capable of duplex operation including an improved sheet handling apparatus according to the present invention;
FIG. 2 is a schematic view illustrating the xerographic components of the copier/duplicator system;
FIG. 3 is a side view of the sheet handling apparatus; and
FIG. 4 is a plan view of the sheet handling apparatus.
FIG. 1 shows a copier/duplicator system generally designated 2 including a copier machine 3, which is a high speed copier/duplicator capable of producing simplex or duplex copies at the option of a machine operator. The copier machine 3 has a platen 4 for receiving documents to be reproduced, and a control panel 5 which includes various control knobs, buttons and switches for selecting various modes of operation such as simplex and duplex copies and the number of copies to be reproduced. In accordance with the invention, the copier/duplicator system includes sheet handling apparatus 8 which directs the copies into a sorter generally designated 6.
As best shown in FIG. 2, the copier/duplicator system includes an automatic xerographic apparatus which includes a photosensitive plate including a photoconductive layer 10 that is placed over a conductive backing. The plate is formed in the shape of a drum 11 and the drum mounted upon a shaft 12 that is journaled for rotation in the machine frame. Basically, the xerographic drum is rotated in the direction indicated so as to pass sequentially through a series of xerographic processing stations. The photosensitive drum and the xerographic processing apparatus are driven at predetermined speed relative to each other from a drive system (not shown) and the operation thereof coordinated in order to produce proper cooperation of the various processing mechanisms.
The original, to be reproduced, is placed upon a transparent horizontally supported platen 4 and the original scanned by means ofa moving optical scanning system and to produce a flowing light image of the original. The scanning system includes an elongated horizontal extended aperture lamp l5 and a movable lens element 18. The lamp and lens element moves in coordination across the object supported upon the platen to focus successive incremental bans of illumination reflected from the object onto the moving drum surface at synchronous speeds therewith. The optical path is folded by means of a pair of image mirrors l9 and 20 interposed between the lens and drum surface, the drum is first uniformly charged by means of a corona generator 13 positioned in charging station A. Under the influence of the flowing light image, the uniformly charged photoconductive surface is selectively dissipated in the non-image areas to form what is commonly known as a latent electrostatic image.
The latent electrostatic image is carried on the drum surface from the exposure station into the developing station C. The developing station primarily is comprised of a developer housing 22 adapted to supported a supply of two-component developer material 21 therein. The developer material is transported by means of a bucket system 23 from the bottom of the developer housing to an elevated position where the material is delivered into the active development zone. The developer material is caused to flow downwardly in contact with the upwardly moving drum surface under closely controlled conditions wherein charged toner particles are attracted from the .developer mix into the image areas on the plate surface thus making the image visible.
The moving drum surface'next transports the developed xerographic image to a transfer station D. Cut sheets of final support material are also moved into the transfer station, the backside of the copy sheet is sprayed with an ion discharge from a transfer corotron 25 including on the sheet a charge having a polarity and magnitude sufficient to attract the toner material from the drum surface to the final support material. This induced charge also electrostatically tacks the final support material to the drum surface. In order to remove the copy sheet from the drum surface, a stripper finger 28 is positioned downstream from the transfer corotron. The finger is arranged to move between the drum surface and the copy sheet and lifts the sheet from the drum surface and the copy sheet is directed along a predetermined path of travel into contact with a stationary vacuum transport 29.
Although a preponderance of the toner material is transferred from the drum surface to the copy sheet during the transfer process, invariably some residual toner remains behind on the drum surface after transfer. The residual toner is transported on the drum surface into a cleaning station E where it is brought under the influence of cleaning corotron 30 adapted to neutralize the electrostatic charge tending to hold the residual toner to the drum surface. The neutralized toner is mechanically cleaned from the drum surface by means of a brush or the like and the toner collected within a housing 31. A conveyor moving in an endless loop through tubes 32 transport the collected residual toner back to the developer housing where it is deposited within the developer mix so that it can be once again reused in the xerographic developing process.
The copy sheet, which has been removed from the drum surface after the transfer operation, is moved along stationary transport 29 into fusing station F. The fuser 33 is basically made up of an upper fuser roll 34 and a lower fuser roll 35 mounted in operative relation to each other and arranged to coact so as to support a sheet of material in pressure driving contact therebetween. The lower roll is heated. As the heated roll is rotated in the direction indicated, the heated surface of the lower roll is pressed into intimate contact with the image face of the support sheet. Mechanical and heat energy transported from the roll surface to the support sheet to permanently bond the toner particles to the support material.
Upon leaving the fuser, the fixed copy sheet is passed through a curvalinear sheet guide system, generally referred to as 39, into cooperating advancing rolls 43 and 44. At this point, depending on the mode of operation selected, the copy sheet is either forwarded directly to the sorter or into upper supply tray 52 by means of a movable sheet guide 45 before entering the sheet handling apparatus 8. For simplex copying the copy sheet is advanced directly to the sheet handling apparaus 8 to invert the sheet before delivery to one of the trays of sorter 6 or the like. A typical sorter is described in copending application Ser. No. 319,957, filed Dec. 29, 1972 now US. Pat; No. 3,788,640 and commonly assigned herewith.
It is believed that the foregoing description is sufficient for purpose of the present application to show the general operation of a xerographic reproducing machine. For a more detailed explanation of the copier/- duplicator xerographic components reference is made to U.S. Pat. No. 3,645,615 entitled Copying Apparatus.
Referring now to FIGS. 3 and 4, the sheet handling apparatus 8 includes a frame 9 supporting rolls 101 and rolls 103 which receive copy sheets from the copier/duplicator and either inverts the copy sheets before ad vancing them to the tray assemblies or advances them directly to the tray asssemblies according to the mode of operation. Rolls 101 are driven by a belt 110 rotating continually in a counter-clockwise direction for transporting the copy sheets S towards the sorter 6. For simplex operation signals from a sheet sensor, as for example a lamp and photocell pair 111 trigger sheet handling apparatus 8 to enable the sheets S to be inverted prior to delivery to the sorter 6. Signals serve to energize a clutch 115 engaging a belt 120 which rotates the frame carrying rolls 101 and 103 at the same speed and direction at which the rolls are turning. At the same time signals to solenoid actuated latch 121 serves to release the frame enabling the rolls 101 and 103 to rotate on an axis. through the nip N. There is no apparent movement of the rolls. Latch 121 re-engages the frame and the clutch is de-energized after 180 of the frame carrying the rolls. It will be appreciated that during rotation the sheet S is not advanced but wrapped around the rolls. As a result the trail edge of the sheet S becomes the lead edge and the top becomes the bottom of the sheet which accomplishes sheet inversion. The sheet is advanced towards feed rolls and 132 which feed it towards sorter 6. On the second sheet a similar operation occurs with rotation of the frame for a second This operation continues with a full 360 rotation for each two sheets.
By the above described invention the copy sheets are inverted or delivered directly without inversion to a sorter from a copy processor depending on whether simplex or duplex operation is used. It will be appreci ated that the sheet handling apparatus accomplishes the transport of the sheetswithout requiring a separate path or a reversing drive for sheet inversion.
While there have been shown and described and pointed out the fundamental novel features of the invention as applied to a preferred embodiment, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention.
What is claimed is:
1. In a reproducing system in which simplex and du-.
plex copies are made in a processor and then distributed, an improved sheet handling apparatus comprising:
a rotatable frame,
first and second roll means supported by said rotatable frame defining a nip for receiving copy sheets from a processor,
first drive means for continuously driving said first roll means on its axis, second drive means for rotating said frame carrying said first and second roll means about an axis through said nip at substantially the same speed and in the same direction as that of said first roll means, and control means to actuate said second drive means in response to signals to rotate said frame carrying said roll means about an angle of 180 about an axis trical signals actuate a solenoid operated latch released momentarily out of the path, of said frame.

Claims (4)

1. In a reproducing system in which simplex and duplex copies are made in a processor and then distributed, an improved sheet handling apparatus comprising: a rotatable frame, first and second roll means supported by said rotatable frame defining a nip for receiving copy sheets from a processor, first drive means for continuously driving said first roll means on its axis, second drive means for rotating said frame carrying said first and second roll means about an axis through said nip at substantially the same speed and in the same direction as that of said first roll means, and control means to actuate said second drive means in response to signals to rotate said frame carrying said roll means about an angle of 180* about an axis through said nip while said first drive means is continuously driving said first roll means such that there is no apparent movement of said roll means to effect the top of the sheets becoming the bottom and the trailing edge thereof becoming the leading edge.
2. Apparatus according to claim 1 wherein said control means includes sheet sensing means for generating electrical signals.
3. Apparatus according to claim 2 wherein said signals actuate electrical clutch means drivingly connected to said frame.
4. Apparatus according to claim 3 wherein said electrical signals actuate a solenoid operated latch released momentarily out of the path of said frame.
US422822A 1973-12-07 1973-12-07 Dual purpose sheet handling apparatus Expired - Lifetime US3917256A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US422822A US3917256A (en) 1973-12-07 1973-12-07 Dual purpose sheet handling apparatus
CA210,620A CA1014098A (en) 1973-12-07 1974-10-02 Dual purpose sheet handling apparatus
NL7414259A NL7414259A (en) 1973-12-07 1974-10-31 SHEET TREATMENT EQUIPMENT WITH DUAL PURPOSE.
DE19742454152 DE2454152A1 (en) 1973-12-07 1974-11-14 DOUBLE PURPOSE LEAF HANDLING DEVICE
GB4939274A GB1475094A (en) 1973-12-07 1974-11-14 Sheet handling apparatus in a reproducing assembly
FR7437716A FR2253632B1 (en) 1973-12-07 1974-11-15
JP1974145047U JPS5536839Y2 (en) 1973-12-07 1974-11-29
CA350,506A CA1129899B (en) 1973-12-07 1980-04-23 Dual purpose sheet handling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US422822A US3917256A (en) 1973-12-07 1973-12-07 Dual purpose sheet handling apparatus

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Publication Number Publication Date
US3917256A true US3917256A (en) 1975-11-04

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US422822A Expired - Lifetime US3917256A (en) 1973-12-07 1973-12-07 Dual purpose sheet handling apparatus

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US (1) US3917256A (en)
JP (1) JPS5536839Y2 (en)
CA (2) CA1014098A (en)
DE (1) DE2454152A1 (en)
FR (1) FR2253632B1 (en)
GB (1) GB1475094A (en)
NL (1) NL7414259A (en)

Cited By (10)

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US4174905A (en) * 1977-02-14 1979-11-20 Eastman Kodak Company Method and apparatus for producing duplex copies
US4179112A (en) * 1976-11-16 1979-12-18 Oce-Van Der Grinten N.V. Apparatus for conveying sheetlike original material to be copied
US4500086A (en) * 1982-12-01 1985-02-19 Xerox Corporation Rotating inverter
US4756520A (en) * 1986-03-25 1988-07-12 Bell Howell Company Mechanism for weighting and applying postage to mail
US4886262A (en) * 1986-09-12 1989-12-12 Isamu Miura Method of and system for turning over papers in a paper arranging apparatus
US5031893A (en) * 1988-10-28 1991-07-16 Kanzaki Paper Mfg. Co., Ltd. Device for turning over printed sheets
US5201517A (en) * 1992-06-24 1993-04-13 Xerox Corporation Orbiting nip plural mode sheet output with faceup or facedown stacking
US5215298A (en) * 1992-06-24 1993-06-01 Xerox Corporation Orbiting nip sheet output with faceup or facedown stacking and integral gate
US6279901B1 (en) * 1999-10-29 2001-08-28 Fargo Electronics, Inc. Identification card inverter that maintains the card support plane
US20140300049A1 (en) * 2011-12-23 2014-10-09 Oce-Technologies B.V. Sheet retention device

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JPH0662237B2 (en) * 1985-04-12 1994-08-17 ゼロツクス コーポレーシヨン Seat stack device
GB8509462D0 (en) * 1985-04-12 1985-05-15 Xerox Corp Sheet-stacking apparatus
US5037082A (en) * 1987-12-14 1991-08-06 Xerox Corporation Inverterless document handler
US4858909A (en) * 1988-03-31 1989-08-22 Xerox Corporation Sheet transporting apparatus

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US2784831A (en) * 1954-02-16 1957-03-12 J B Ehrsam & Sons Mfg Company Automatic inverter
US3610397A (en) * 1969-03-05 1971-10-05 Epec Systems Corp Method and apparatus for turning over a plate
US3744614A (en) * 1972-06-30 1973-07-10 Ncr Rotating mechanism

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JPS5112843Y2 (en) * 1971-06-03 1976-04-07

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US2784831A (en) * 1954-02-16 1957-03-12 J B Ehrsam & Sons Mfg Company Automatic inverter
US3610397A (en) * 1969-03-05 1971-10-05 Epec Systems Corp Method and apparatus for turning over a plate
US3744614A (en) * 1972-06-30 1973-07-10 Ncr Rotating mechanism

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4179112A (en) * 1976-11-16 1979-12-18 Oce-Van Der Grinten N.V. Apparatus for conveying sheetlike original material to be copied
US4174905A (en) * 1977-02-14 1979-11-20 Eastman Kodak Company Method and apparatus for producing duplex copies
US4500086A (en) * 1982-12-01 1985-02-19 Xerox Corporation Rotating inverter
US4756520A (en) * 1986-03-25 1988-07-12 Bell Howell Company Mechanism for weighting and applying postage to mail
US4886262A (en) * 1986-09-12 1989-12-12 Isamu Miura Method of and system for turning over papers in a paper arranging apparatus
US5031893A (en) * 1988-10-28 1991-07-16 Kanzaki Paper Mfg. Co., Ltd. Device for turning over printed sheets
US5201517A (en) * 1992-06-24 1993-04-13 Xerox Corporation Orbiting nip plural mode sheet output with faceup or facedown stacking
US5215298A (en) * 1992-06-24 1993-06-01 Xerox Corporation Orbiting nip sheet output with faceup or facedown stacking and integral gate
US6279901B1 (en) * 1999-10-29 2001-08-28 Fargo Electronics, Inc. Identification card inverter that maintains the card support plane
US20140300049A1 (en) * 2011-12-23 2014-10-09 Oce-Technologies B.V. Sheet retention device
US8998201B2 (en) * 2011-12-23 2015-04-07 Oce-Technologies B.V. Sheet retention device

Also Published As

Publication number Publication date
FR2253632B1 (en) 1978-08-11
GB1475094A (en) 1977-06-01
JPS5536839Y2 (en) 1980-08-29
FR2253632A1 (en) 1975-07-04
NL7414259A (en) 1975-01-31
JPS5096452U (en) 1975-08-12
DE2454152A1 (en) 1975-06-12
CA1129899B (en) 1982-08-17
CA1014098A (en) 1977-07-19

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