US3709596A - Automatic diazo copier - Google Patents

Automatic diazo copier Download PDF

Info

Publication number
US3709596A
US3709596A US00137874A US3709596DA US3709596A US 3709596 A US3709596 A US 3709596A US 00137874 A US00137874 A US 00137874A US 3709596D A US3709596D A US 3709596DA US 3709596 A US3709596 A US 3709596A
Authority
US
United States
Prior art keywords
drum
belts
original sheet
sheet
duplication
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
Application number
US00137874A
Inventor
A Ulmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
R Q O HOLDING CO Inc
Original Assignee
GAF Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GAF Corp filed Critical GAF Corp
Application granted granted Critical
Publication of US3709596A publication Critical patent/US3709596A/en
Assigned to R Q O HOLDING COMPANY INC reassignment R Q O HOLDING COMPANY INC ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GAF CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D7/00—Gas processing apparatus
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/10—Copying apparatus with a relative movement between the original and the light source during exposure
    • G03B27/12—Copying apparatus with a relative movement between the original and the light source during exposure for automatic repeated copying of the same original

Definitions

  • ABSTRACT A recirculating arrangement for conveying an original sheet after initial registration with a copy sheet and duplication thereof back to an exposure position for registration with another copy sheet and duplication thereof.
  • the recirculating arrangement comprises a stationary vacuum drum having a curved surface with an edge guide thereon.
  • a plurality of spaced belts surround the drum and slide over the drum surface at an acute angle with respect to the edge guide.
  • a plurality of rollers are mounted beneath the drum for driving the belts at the angle to the edge guide so that the I original sheet will be urged against the edge guide when it is conveyed to the exposure position for positive registration of the original sheet with the copy sheet.
  • DNER MM AUTOMATIC DIAZO COPIER This invention relates to dual roll feed automatic diazo copies, and more particularly to original recirculating devices for making multiple copies.
  • the invention provides an original recirculating device in which a selected original is carried over the curved surface of a stationary vacuum drum by spaced belts which areadvanced in unison along helical paths I on such surface so as to bias the original toward an edge guide on one side of the drum.
  • the original is aligned for exact recopying when combined with the copy paper for making the same.
  • a belt correcting roller system is located under the drum to feed the belts onto the drum surface at the correct angle of tilt, carry the belts away from the drum surface at the correct opposite angle of tilt, and reverse such tilt under the drum.
  • FIG. 1 is a fragmentary view partly in elevation and partly in elevationand partly in cross-section of an automatic diazo copier having an original recirculating device illustrative of the invention.
  • FIG. 2 is a view mainly in cross-section of the device.
  • FIGS. 2a and 2b are fragmentary in elevation of the front and rear of the device.
  • FIG. 2c is a similar view of the rear set of conical rollers.
  • FIG. 3 is an enlarged fragmentary view in elevation of the front portion of the device.
  • FIG. 3a is a fragmentary view in elevation of the helical path of the belt.
  • FIG. 4 is a fragmentary bottom plan view in direction arrow N of FIG. 2, showing the belt-tilt reversing system under the drum.
  • the roll feed diazo copier includes an original or master recirculator l2 embodying the present invention.
  • the recirculator 12 includes a vacuum drum 14 having a curved surface l6-between vertical flanges, constituting edge guide 18.
  • Spaced belts 22 are urged to slide on the curved surface 16in helical paths which are inclined toward the edge guide 18, see FIG. 2a, by roller means 24 comprising an inclined front roller A, [FIG. 2,] and a first set of inclined conical rollers 26, FIG. 1 or B FIG. 2, one for each belt on a common tilted shaft B located under and to the rear of roller A.
  • the belts reverse the drum surface 16 between a series of slots 28 in the drum which have a negative internal pressure.
  • This pressure is maintained via a vacuum connection 30, in order to gently hold the master or original on the moving belts 22, while the latter urge the original 32, FIG. 1, toward the edge guide 18 located to one side of the drum.
  • the original 32 advances towards the rear of the recirculator 12, it is transported through an inclined guide 35 and fed back into the horizontal way 36 for recopying.
  • the belts 22 are driven by the drive roller E assisted by snubber rollers 40, and adjusted to proper tension by a tension roller C located under the belts 22 between the conical rollers 26 and 38.
  • Aligning of the master 32 prior to entering the printer section 42 is achieved by driving the belts 22 over the stationary drum 14 at an angle other than parallel to the edge guide of the drum.
  • the belt 22 drive toward an edge guide 18 located on the drum.
  • rollers A and B are also positioned at an angle a with respect to the horizontal.
  • the belts 22 are endless, they will follow a helical pattern around the drum and, as a result rollers A and B must be compounded by equal angles of 0: [FIGS. 3 and 3a].
  • rollers D, E and 6 must also be compounded by equal angles of a. But as the belts 22 follow a helical path, these rollers will be compounded the reverse of rollers A and D, FIGS. 2a and 2b.
  • FIG. 2 length of belt 22 from roller B to D (around drum) displacement of belt from roller B to D R FIG. 4 (L-D sin a.
  • Tan [3 FIG. 4) [(L-D) sin a/D]/D
  • the belt 22 is allowed to twist.
  • the angle of twist is equal to angle [3". It will be noticed from FIG. 4 that the twist is equal and opposite between rollers B and D.
  • the included taper of the rollers 26 and 38 is equal to 2 B".
  • Roller C is a tension roller.
  • an original sheet recirculating arrangement for conveying an original sheet after initial registration with a copy sheet and duplication thereof back to an exposure position for registration with another copy sheet and duplication thereof, said recirculating arrangement including: a stationary drum mounted on a given axis having a curved surface with guide means adjacent one edge thereof, a series of aligned endless driving belts surrounding said drum and mounted for slidable engagement with said drum surface at an oblique angle with respect to said guide means, and roller means positioned beneath said drum and in engagement with said series of belts for driving said belts in concert with one another; said roller means having at least one roller positioned with respect to said drum axis for driving said belts along parallel paths with respect to one another and at said angle to said guide means so that the original sheet will be urged against said guide means when it is conveyed to the exposure'position for positive registration of the original sheet with a copy sheet for duplication of the original sheet.
  • the drum is provided with spaced slots located in the curved surface thereof between said belts, and vacuum means are provided within said drum for maintaining the interior of said drum at a negative pressure for lightly holding the original sheet on said driving belts.
  • vacuum means are provided within said drum for maintaining the interior of said drum at a negative pressure for lightly holding the original sheet on said driving belts.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Pile Receivers (AREA)

Abstract

A recirculating arrangement for conveying an original sheet after initial registration with a copy sheet and duplication thereof back to an exposure position for registration with another copy sheet and duplication thereof. The recirculating arrangement comprises a stationary vacuum drum having a curved surface with an edge guide thereon. A plurality of spaced belts surround the drum and slide over the drum surface at an acute angle with respect to the edge guide. A plurality of rollers are mounted beneath the drum for driving the belts at the angle to the edge guide so that the original sheet will be urged against the edge guide when it is conveyed to the exposure position for positive registration of the original sheet with the copy sheet.

Description

United States Patent [1 1 Ulmer 51 Jan. 9, 1973 [54] AUTOMATIC DIAZO COPIER [75] Inventor: Arnold G. Ulmer, Endicott, NY.
[73] Assignee: GAF Corporation, New York, NY.
[22] Filed: April 27, 1971 [21] Appl. No.: 137,874
[52] U.S. Cl. ..355/l09, 271/49, 271/74, 355/76, 355/104 [51] Int. Cl. ..G03b 27/12 [58] Field of Search ..355/64, 73, 76, 91, 104, 109; 271/46, 49, 59, 74
[56] 1 References Cited UNITED STATES PATENTS 2,435,099 1/1948 Pratt et al ..355/64 3,370,493 2/1968 Donley et al. ..271/49 X 3,288,464 11/1966 Thompson ..355/64 X 3,588,090 6/1971 Huston ..271/49 X OTHER PUBLICATIONS IBM Technical Disclosure Bulletin, Vol. 12, No. 7, Dec. 1969, pg. 943.
Primary Examiner-Samuel S. Matthews Assistant ExaminerRichard M. Sheer Attorney-Walter C. Kehm, Samson B. Leavitt and Martin Smolowitz [57] ABSTRACT A recirculating arrangement for conveying an original sheet after initial registration with a copy sheet and duplication thereof back to an exposure position for registration with another copy sheet and duplication thereof. The recirculating arrangement comprises a stationary vacuum drum having a curved surface with an edge guide thereon. A plurality of spaced belts surround the drum and slide over the drum surface at an acute angle with respect to the edge guide. A plurality of rollers are mounted beneath the drum for driving the belts at the angle to the edge guide so that the I original sheet will be urged against the edge guide when it is conveyed to the exposure position for positive registration of the original sheet with the copy sheet.
3'Claims, 8 Drawing Figures PATENTHJJM ems v 596 sum 1 or 3 ARNOLD a. 0mm
yaww
PATENTEDJAN 9192a 3.709.596
sum 2 0r 3 AWOL'D ULNK PATENTED JAN 9 I975 SHEET 3 [1F 3 Fig. 4.
may 6?. DNER MM AUTOMATIC DIAZO COPIER This invention relates to dual roll feed automatic diazo copies, and more particularly to original recirculating devices for making multiple copies.
The invention provides an original recirculating device in which a selected original is carried over the curved surface of a stationary vacuum drum by spaced belts which areadvanced in unison along helical paths I on such surface so as to bias the original toward an edge guide on one side of the drum. Thus, the original is aligned for exact recopying when combined with the copy paper for making the same. A belt correcting roller system is located under the drum to feed the belts onto the drum surface at the correct angle of tilt, carry the belts away from the drum surface at the correct opposite angle of tilt, and reverse such tilt under the drum.
In the drawings:
FIG. 1 is a fragmentary view partly in elevation and partly in elevationand partly in cross-section of an automatic diazo copier having an original recirculating device illustrative of the invention.
FIG. 2 is a view mainly in cross-section of the device.
FIGS. 2a and 2b are fragmentary in elevation of the front and rear of the device.
FIG. 2c is a similar view of the rear set of conical rollers. FIG. 3 is an enlarged fragmentary view in elevation of the front portion of the device.
FIG. 3a is a fragmentary view in elevation of the helical path of the belt.
FIG. 4 is a fragmentary bottom plan view in direction arrow N of FIG. 2, showing the belt-tilt reversing system under the drum.
As shown in FIG. 1, the roll feed diazo copier includes an original or master recirculator l2 embodying the present invention. The recirculator 12 includes a vacuum drum 14 having a curved surface l6-between vertical flanges, constituting edge guide 18. Spaced belts 22 are urged to slide on the curved surface 16in helical paths which are inclined toward the edge guide 18, see FIG. 2a, by roller means 24 comprising an inclined front roller A, [FIG. 2,] and a first set of inclined conical rollers 26, FIG. 1 or B FIG. 2, one for each belt on a common tilted shaft B located under and to the rear of roller A.
The belts reverse the drum surface 16 between a series of slots 28 in the drum which have a negative internal pressure. This pressure is maintained via a vacuum connection 30, in order to gently hold the master or original on the moving belts 22, while the latter urge the original 32, FIG. 1, toward the edge guide 18 located to one side of the drum. As the original 32 advances towards the rear of the recirculator 12, it is transported through an inclined guide 35 and fed back into the horizontal way 36 for recopying.
At the same time, the belts 22 are carried under inclined rear roller G, then upwardly and over a .drive roller E, then downwardly and under a second set of conical rollers 38, on a common inclined roller D, and back under conical front rollers 26 and over roller A, back onto the drum surface. To assist the suction created on the surface of .the drum, the master 32 is sandwiched between the belts 22 and narrow strips of a plastic 34, such as antistatic polyester, which are attached to a guide member 39.
The belts 22 are driven by the drive roller E assisted by snubber rollers 40, and adjusted to proper tension by a tension roller C located under the belts 22 between the conical rollers 26 and 38.
Aligning of the master 32 prior to entering the printer section 42, is achieved by driving the belts 22 over the stationary drum 14 at an angle other than parallel to the edge guide of the drum. The belt 22 drive toward an edge guide 18 located on the drum. As
the master 32 emerges from the separator section.
(separator section not shown on FIG. 1), i.e., the copy paper following path to the developer section while master follows a path over belts of recirculator drum, the master is properly aligned and continues on its next cycle. Ejection of the master 32 is achieved after separation by conventional means. The tracking of the belts 22 being driven at an angle will be better understood by the following description.
Master paper leading edge 32 on actuating switch SW1 will start copy drive 44, FIG. 1. And as the leading edge of master 32 actuates switch SW2 a stepper switch (not shown) is energized for copy count. On last count, ejector 46 will raise and divert original 32 into drive out rollers 48.
In FIG. 20, let a be the angle the belts 22 are inclined to the surface 16 of the drum 14 with reference to the edge guide l 8.-Then rollers A and B are also positioned at an angle a with respect to the horizontal. As the belts 22 are endless, they will follow a helical pattern around the drum and, as a result rollers A and B must be compounded by equal angles of 0: [FIGS. 3 and 3a].
It follows from the foregoing that rollers D, E and 6 must also be compounded by equal angles of a. But as the belts 22 follow a helical path, these rollers will be compounded the reverse of rollers A and D, FIGS. 2a and 2b.
Referring to FIG. 4, let
L total length of belt 22.
D distance between rollers B and D.
a= angle belts 22 make with surface 16 of drum 14.
FIG. 2. length of belt 22 from roller B to D (around drum) displacement of belt from roller B to D R FIG. 4 (L-D sin a.
Tan [3 FIG. 4) [(L-D) sin a/D]/D In order to realign the belt 22 from B to D, the belt 22 is allowed to twist. The angle of twist is equal to angle [3". It will be noticed from FIG. 4 that the twist is equal and opposite between rollers B and D. The included taper of the rollers 26 and 38 is equal to 2 B".
With above conditions satisfied, the belts 22 enter roller E and leave roller A perfectly flat.
Roller C is a tension roller.
What is claimed is:
1. In an improved diazo copying machine, an original sheet recirculating arrangement for conveying an original sheet after initial registration with a copy sheet and duplication thereof back to an exposure position for registration with another copy sheet and duplication thereof, said recirculating arrangement including: a stationary drum mounted on a given axis having a curved surface with guide means adjacent one edge thereof, a series of aligned endless driving belts surrounding said drum and mounted for slidable engagement with said drum surface at an oblique angle with respect to said guide means, and roller means positioned beneath said drum and in engagement with said series of belts for driving said belts in concert with one another; said roller means having at least one roller positioned with respect to said drum axis for driving said belts along parallel paths with respect to one another and at said angle to said guide means so that the original sheet will be urged against said guide means when it is conveyed to the exposure'position for positive registration of the original sheet with a copy sheet for duplication of the original sheet.
2. The invention as defined by claim 1, in which said belts are equally spaced from one another,
the drum is provided with spaced slots located in the curved surface thereof between said belts, and vacuum means are provided within said drum for maintaining the interior of said drum at a negative pressure for lightly holding the original sheet on said driving belts. 3. The invention as defined by claim 2, in which means are provided comprising narrow strips of plastic material spaced slightly above the curved surface of said drum for urging the original sheet toward the belts for the purpose of assisting suction created on the surface of the drum by such negative pressure.

Claims (3)

1. In an improved diazo copying machine, an original sheet recirculating arrangement for conveying an original sheet after initial registration with a copy sheet and duplication thereof back to an exposure position for registration with another copy sheet and duplication thereof, said recirculating arrangement including: a stationary drum mounted on a given axis having a curved surface with guide means adjacent one edge thereof, a series of aligned endless driving belts surroundIng said drum and mounted for slidable engagement with said drum surface at an oblique angle with respect to said guide means, and roller means positioned beneath said drum and in engagement with said series of belts for driving said belts in concert with one another; said roller means having at least one roller positioned with respect to said drum axis for driving said belts along parallel paths with respect to one another and at said angle to said guide means so that the original sheet will be urged against said guide means when it is conveyed to the exposure position for positive registration of the original sheet with a copy sheet for duplication of the original sheet.
2. The invention as defined by claim 1, in which said belts are equally spaced from one another, the drum is provided with spaced slots located in the curved surface thereof between said belts, and vacuum means are provided within said drum for maintaining the interior of said drum at a negative pressure for lightly holding the original sheet on said driving belts.
3. The invention as defined by claim 2, in which means are provided comprising narrow strips of plastic material spaced slightly above the curved surface of said drum for urging the original sheet toward the belts for the purpose of assisting suction created on the surface of the drum by such negative pressure.
US00137874A 1971-04-27 1971-04-27 Automatic diazo copier Expired - Lifetime US3709596A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13787471A 1971-04-27 1971-04-27

Publications (1)

Publication Number Publication Date
US3709596A true US3709596A (en) 1973-01-09

Family

ID=22479424

Family Applications (1)

Application Number Title Priority Date Filing Date
US00137874A Expired - Lifetime US3709596A (en) 1971-04-27 1971-04-27 Automatic diazo copier

Country Status (11)

Country Link
US (1) US3709596A (en)
JP (1) JPS5245491B2 (en)
AU (1) AU472184B2 (en)
BR (1) BR7202549D0 (en)
CA (1) CA981090A (en)
CH (1) CH546647A (en)
DE (1) DE2220397C3 (en)
FR (1) FR2136746A5 (en)
GB (1) GB1388205A (en)
IT (1) IT953767B (en)
NL (1) NL156515B (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058359A (en) * 1973-01-29 1977-11-15 Oce-Van Der Grinten N.V. Apparatus for copying sheet originals
US4072305A (en) * 1975-09-06 1978-02-07 Meteor-Siegen Apparatebau Paul Schmeck Gmbh Photocopying machine having a repeat mechanism
US4082456A (en) * 1975-12-27 1978-04-04 Hoechst Aktiengesellschaft Device for adjusting an original to be copied
US4087177A (en) * 1976-05-07 1978-05-02 Hoechst Aktiengesellschaft Sheet conveyor mechanism for reproducing apparatus
US4147339A (en) * 1975-03-26 1979-04-03 Ricoh Company, Ltd. Sheet feed and positioning mechanism
US4162786A (en) * 1976-09-29 1979-07-31 International Business Machines Corporation Job separation by a skewed trough in the paper path
US4316667A (en) * 1980-02-19 1982-02-23 International Business Machines Corporation Copier and recirculating document feeder
US4398709A (en) * 1981-02-02 1983-08-16 International Business Machines Corporation Wave generation amplification apparatus for cut sheet paper feeding
US4572499A (en) * 1984-05-29 1986-02-25 Gaspar A. H. Bijttebier Process and apparatus for registering sheets
US4737826A (en) * 1985-01-22 1988-04-12 Fotoclark Grun GmbH & Co. KG Device for duplicating microfilms or microfiches
US5324022A (en) * 1992-11-16 1994-06-28 Eastman Kodak Company Tandem frusto-conical roller mechanism for receiver member edge registration
US5924686A (en) * 1996-10-25 1999-07-20 Pitney Bowes Inc. Method for controlling the velocity of sheet separation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5610658B2 (en) * 1973-10-19 1981-03-10
JPS5511809A (en) * 1978-07-10 1980-01-28 Canon Inc Picture image recording method and device
DE3119945C1 (en) * 1981-05-15 1982-12-09 Maschinenbau Ing.H. Stegenwalner, 1000 Berlin Device for aligning the sides of the original sheet in a repeater blue-printing (diazo, dyeline) machine
GB2166419B (en) * 1984-09-28 1988-05-05 Rotaprint Plc Sheet registration device and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435099A (en) * 1943-10-28 1948-01-27 Pratt Document camera and printer
US3288464A (en) * 1965-03-01 1966-11-29 Xerox Corp Card inverting apparatus
US3370493A (en) * 1965-10-23 1968-02-27 Donley Bindery Company Inc Apparatus for feeding work to and from a work station
US3588090A (en) * 1969-11-13 1971-06-28 Bell & Howell Co Aligning mechanism for envelope blanks

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE520826C (en) * 1931-03-14 Zwietusch E & Co Gmbh Corner guide for conveyor belt systems
US3107089A (en) * 1961-02-27 1963-10-15 Burroughs Corp Sheet side registration apparatus
US3578861A (en) * 1967-08-31 1971-05-18 Ricoh Kk Copy paper feeding device for use with photocopying machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435099A (en) * 1943-10-28 1948-01-27 Pratt Document camera and printer
US3288464A (en) * 1965-03-01 1966-11-29 Xerox Corp Card inverting apparatus
US3370493A (en) * 1965-10-23 1968-02-27 Donley Bindery Company Inc Apparatus for feeding work to and from a work station
US3588090A (en) * 1969-11-13 1971-06-28 Bell & Howell Co Aligning mechanism for envelope blanks

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure Bulletin, Vol. 12, No. 7, Dec. 1969, pg. 943. *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058359A (en) * 1973-01-29 1977-11-15 Oce-Van Der Grinten N.V. Apparatus for copying sheet originals
US4147339A (en) * 1975-03-26 1979-04-03 Ricoh Company, Ltd. Sheet feed and positioning mechanism
US4072305A (en) * 1975-09-06 1978-02-07 Meteor-Siegen Apparatebau Paul Schmeck Gmbh Photocopying machine having a repeat mechanism
US4082456A (en) * 1975-12-27 1978-04-04 Hoechst Aktiengesellschaft Device for adjusting an original to be copied
US4087177A (en) * 1976-05-07 1978-05-02 Hoechst Aktiengesellschaft Sheet conveyor mechanism for reproducing apparatus
US4162786A (en) * 1976-09-29 1979-07-31 International Business Machines Corporation Job separation by a skewed trough in the paper path
US4316667A (en) * 1980-02-19 1982-02-23 International Business Machines Corporation Copier and recirculating document feeder
US4398709A (en) * 1981-02-02 1983-08-16 International Business Machines Corporation Wave generation amplification apparatus for cut sheet paper feeding
US4572499A (en) * 1984-05-29 1986-02-25 Gaspar A. H. Bijttebier Process and apparatus for registering sheets
US4737826A (en) * 1985-01-22 1988-04-12 Fotoclark Grun GmbH & Co. KG Device for duplicating microfilms or microfiches
US5324022A (en) * 1992-11-16 1994-06-28 Eastman Kodak Company Tandem frusto-conical roller mechanism for receiver member edge registration
US5924686A (en) * 1996-10-25 1999-07-20 Pitney Bowes Inc. Method for controlling the velocity of sheet separation

Also Published As

Publication number Publication date
CA981090A (en) 1976-01-06
BR7202549D0 (en) 1973-06-07
NL7205752A (en) 1972-10-31
FR2136746A5 (en) 1972-12-22
AU472184B2 (en) 1976-05-20
CH546647A (en) 1974-03-15
DE2220397C3 (en) 1982-01-07
AU4157672A (en) 1973-12-20
JPS5245491B2 (en) 1977-11-16
DE2220397B2 (en) 1978-06-15
JPS4849438A (en) 1973-07-12
IT953767B (en) 1973-08-10
NL156515B (en) 1978-04-17
GB1388205A (en) 1975-03-26
DE2220397A1 (en) 1972-11-02

Similar Documents

Publication Publication Date Title
US3709596A (en) Automatic diazo copier
CA1303634C (en) Document handler jam clearance and job recovery system
CA1245706A (en) Document registration system
US4295737A (en) Grooved belt document registration system
JP2710814B2 (en) Document processing machine suction belt platen transport clamp system
FI73648B (en) FOERFARANDE OCH ANORDNING FOER MATNING OCH HANTERING AV DOKUMENTARK.
CA1328678C (en) Duplex document handler
US4469436A (en) Recirculation document handling methods and apparatus and copiers incorporating such apparatus
US4440492A (en) Variable force wide document belt transport system
US4298277A (en) Grooved vacuum belt document handling system
US4294539A (en) Document vacuum weir system
JP2569162B2 (en) Document feeder
US4291974A (en) Dual mode document belt system
US4428666A (en) Document deskewing system
US4881729A (en) Recirculating document handler with integral SADH
US3025778A (en) Photocopy apparatus and document carrier for same
US5836582A (en) Sheet feeding device with air injectors for separating sheets
US4849788A (en) Automatic dual mode document registration and edge guide
US4381893A (en) Recirculating document lateral registration
US4794429A (en) Automatic dual mode sheet and web document transport for copiers
US4286870A (en) Document belt with discrete vacuum areas
JP2506426B2 (en) Paper retainer structure in image forming apparatus
US3947020A (en) Device for automatically separating a photosensitive sheet from an original for copying apparatus
US4506978A (en) Document registration system
US3655184A (en) Automatic sheet separating apparatus

Legal Events

Date Code Title Description
AS Assignment

Owner name: R Q O HOLDING COMPANY INC, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GAF CORPORATION;REEL/FRAME:004006/0585

Effective date: 19820526

Owner name: R Q O HOLDING COMPANY INC 111 WEST 2ND ST JAMESTOW

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GAF CORPORATION;REEL/FRAME:004006/0585

Effective date: 19820526