US3687548A - Sheet conveyor for automatic copying machines - Google Patents

Sheet conveyor for automatic copying machines Download PDF

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Publication number
US3687548A
US3687548A US860251A US3687548DA US3687548A US 3687548 A US3687548 A US 3687548A US 860251 A US860251 A US 860251A US 3687548D A US3687548D A US 3687548DA US 3687548 A US3687548 A US 3687548A
Authority
US
United States
Prior art keywords
sheet
belts
guide sheet
machine
suction
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
US860251A
Other languages
English (en)
Inventor
Kobayashi Yugoro
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Application granted granted Critical
Publication of US3687548A publication Critical patent/US3687548A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B65H5/026—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts between belts and stationary pressing, supporting or guiding elements forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L21/00—Devices for conveying sheets or webs of copy material through the apparatus or machines for manifolding, duplicating, or printing
    • B41L21/02—Devices for conveying sheets or webs of copy material through the apparatus or machines for manifolding, duplicating, or printing for conveying sheets
    • B41L21/10—Combinations of endless conveyors and grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/242—Suction bands or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B65H5/224—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction belts
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/31—Features of transport path
    • B65H2301/312—Features of transport path for transport path involving at least two planes of transport forming an angle between each other
    • B65H2301/3122—U-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/323—Overhead suction belt, i.e. holding material against gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/06—Office-type machines, e.g. photocopiers

Definitions

  • One of the objects of the present invention is therefore to provide a device which can ensure the positive, secure and uniform transportation of the sheets or the like in the conveyor system of the type described above.
  • Another object of the present invention is to provide a sheet conveyor device of the type described above which enables the sheets or the like to be transported along a vertical surface and a ceiling.
  • the conveyor belts are closely covered with a guide sheet having a width equal to or slightly larger than the over-all width of the conveyor belts.
  • the sheet or the like is transported by the conveyor belts under the guide sheet while the sheet or the like is firmly pressed against the belts by the above described suction. Since the guide sheet is closely pressed against the conveyor belts at the portion where no sheet or the like is interposed therebetween, the air to be sucked into the tank through the suction holes upon which is not passing the sheet or the like is remarkably reduced in quantity. This means that the sheet or the like is sucked and pressed against the conveyor belts with an increased force. Thus, the sheet or the like may be positively, securely and uniformly transported without causing any damage in a well safe-guarded manner.
  • FIG. 1 is a diagrammatic view for explanation of a sheet conveyor device in accordance with the present invention
  • FIG. 2 is a fragmentary side view thereof with parts broken away;
  • FIG. 3 is a cross sectional view thereof illustrating thesheet or the like being transported.
  • an opening 2 is formed at a suitable portion of one side of a suction tank 1 and is connected to one end of a conduit pipe 3 leading to a suction pump (not shown) so that the air within the tank is always discharged therefrom, thereby maintaining the pressure negative relative to the atmospheric pressure.
  • An endless belt 4 is wrapped over rollers 5,6,7 and 8 so as to be advanced in the direction indicated by the arrow around the tank 1.
  • the endless conveyor belt 4 is comprised of a plurality of equidistantly spaced apart belts and suction holes 9 are formed in the side wall of the tank 1 in opposed relation with the spaces between the belts or strips.
  • Thesuction holes 9 may be of slit shape.
  • a guide sheet 10 is made of a material such as plastics or sheet metals having a high-grade surface smoothness and a better air-tightness and incapable of generating electrostatic charge (electrification).
  • the guide sheet 10 is disposed outwardly of the belt 4.
  • Only the upper end portion 12 of the guide sheet 10 may be held in position whereas the lower end may be free upon a support 13 when the copying machine is in inoperative position because when the machine is once operated, the guide sheet 10 may be tightened upon the conveyor belt 4 due to the tension applied to the guide sheet 10 from the conveyor belt 4 and the suction described hereinabove.
  • the sheet or the like is pressed securely against the conveyor belt by the suction due to the negative pressure in the suction tank so that the sheet may be smoothly transported not only along the planar surface but also the curved surface having a small radius of curvature. Furthermore, sheets which easily tend to curl may be transported in a well safe-guarded manner and may be transported even along the ceiling. Since the guide sheet of the present invention is attracted toward and seals the suction ports other than those acting upon the sheet being conveyed, it is positively prevented that the air is unnecessarily sucked through these idle suction holes into the suction tank, thereby decreasing the negative pressure within the tank.
  • the suction only acts upon the sheet 11, not upon the guide sheet 10, so that there is no special acting therebetween so as to adhere them.
  • the guide sheet will not adversely affect the transportation of the sheet 1 l.
  • the guide sheet is made of a transparent material so that the transportation of the sheet can be checked from the outside.
  • a sheet conveyor device for passing a sheet of paper through an automatic copying machine comprismg a suction tank mounted within the machine and having an end area including a feed portion and an exit portion for said paper;
  • a guide sheet of a flexible nature located in the machine, said guide sheet having vertically spaced and aligned inlet and outlet end portions adjacent said end area of said suction tank, said guide sheet having a configuration to be disposed outwardly of an adjacent to said endless belts;
  • said guide sheet having a transverse dimension greater than said predetermined total transverse dimension of said plurality of endless belts whereby the paper passing through the machine between said guide sheet and said belts is held against said belts by suction acting through said holes.
  • a sheet conveyor device in which said inlet end portion of said guide sheet is ed th m e and l ated verticall bove 221 outl t enfi pgrfii and said outlet end p r on is positioned to move freely with respect to said machine.
  • a sheet conveyor according to claim 2 in which an element is located within the machine to provide a support for said freely movable outlet end portion of said guide sheet.
  • a sheet conveyor according to claim 1 in which said transverse dimension of said guide sheet is such that its outer transverse edge extends further outwardly than an outermost located belt in said plurality of endless belts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Registering Or Overturning Sheets (AREA)
US860251A 1968-09-27 1969-09-23 Sheet conveyor for automatic copying machines Expired - Lifetime US3687548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43069425A JPS4810649B1 (enrdf_load_stackoverflow) 1968-09-27 1968-09-27

Publications (1)

Publication Number Publication Date
US3687548A true US3687548A (en) 1972-08-29

Family

ID=13402236

Family Applications (1)

Application Number Title Priority Date Filing Date
US860251A Expired - Lifetime US3687548A (en) 1968-09-27 1969-09-23 Sheet conveyor for automatic copying machines

Country Status (6)

Country Link
US (1) US3687548A (enrdf_load_stackoverflow)
JP (1) JPS4810649B1 (enrdf_load_stackoverflow)
CA (1) CA921503A (enrdf_load_stackoverflow)
FR (1) FR2019057A1 (enrdf_load_stackoverflow)
GB (1) GB1241239A (enrdf_load_stackoverflow)
NL (1) NL158742B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893765A (en) * 1972-05-11 1975-07-08 Ricoh Kk Sheet handling device for photocopying machine
DE2551209A1 (de) * 1974-11-13 1976-05-26 Minnesota Mining & Mfg Automatische kamera fuer zweierlei druckplatten
US4087177A (en) * 1976-05-07 1978-05-02 Hoechst Aktiengesellschaft Sheet conveyor mechanism for reproducing apparatus
US4302103A (en) * 1980-07-14 1981-11-24 Barthel Zeunen Precision contact printer
EP1256536A3 (de) * 2001-05-10 2004-02-04 Mathias Bäuerle GmbH Transporteinrichtung für flaches Transportgut vorzugsweise Papier

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4108302A (en) * 1974-03-27 1978-08-22 J. Bobst & Fils, S.A. Suction conveyor
JPS5361241U (enrdf_load_stackoverflow) * 1976-10-25 1978-05-24
GB2128953B (en) * 1982-10-28 1986-04-09 Bishopbarn Ltd Conveyor with suction means for holding articles in contact therewith
JP2623159B2 (ja) * 1990-08-24 1997-06-25 富士写真フイルム株式会社 シート材搬送装置
US5374044A (en) * 1993-11-01 1994-12-20 Pitney Bowes Inc. Vacuum drum document handling system for an insertion device
US5564693A (en) * 1995-02-01 1996-10-15 Ward Holding Company, Inc. Paperboard processing machine with vacuum transfer system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US601883A (en) * 1898-04-05 Art hue schwarz
US2206333A (en) * 1938-07-11 1940-07-02 Twentieth Cent Fox Film Corp Motion picture film printer
US2584401A (en) * 1949-08-11 1952-02-05 Marvin A Thralls Transparent vacuum back
US3105107A (en) * 1958-06-03 1963-09-24 Engelhard Hanovia Inc Photoelectric device for measuring light output values in photo-printing machines
US3152528A (en) * 1963-09-23 1964-10-13 Xerox Corp Document carrier
US3359879A (en) * 1965-04-13 1967-12-26 Du Pont Vacuum frame utilizing air inbleed during exposure of photosensitive materials
US3521538A (en) * 1967-06-20 1970-07-21 Eltra Corp Film magazine for phototypographical machines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US601883A (en) * 1898-04-05 Art hue schwarz
US2206333A (en) * 1938-07-11 1940-07-02 Twentieth Cent Fox Film Corp Motion picture film printer
US2584401A (en) * 1949-08-11 1952-02-05 Marvin A Thralls Transparent vacuum back
US3105107A (en) * 1958-06-03 1963-09-24 Engelhard Hanovia Inc Photoelectric device for measuring light output values in photo-printing machines
US3152528A (en) * 1963-09-23 1964-10-13 Xerox Corp Document carrier
US3359879A (en) * 1965-04-13 1967-12-26 Du Pont Vacuum frame utilizing air inbleed during exposure of photosensitive materials
US3521538A (en) * 1967-06-20 1970-07-21 Eltra Corp Film magazine for phototypographical machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893765A (en) * 1972-05-11 1975-07-08 Ricoh Kk Sheet handling device for photocopying machine
DE2551209A1 (de) * 1974-11-13 1976-05-26 Minnesota Mining & Mfg Automatische kamera fuer zweierlei druckplatten
US4087177A (en) * 1976-05-07 1978-05-02 Hoechst Aktiengesellschaft Sheet conveyor mechanism for reproducing apparatus
US4302103A (en) * 1980-07-14 1981-11-24 Barthel Zeunen Precision contact printer
EP1256536A3 (de) * 2001-05-10 2004-02-04 Mathias Bäuerle GmbH Transporteinrichtung für flaches Transportgut vorzugsweise Papier

Also Published As

Publication number Publication date
JPS4810649B1 (enrdf_load_stackoverflow) 1973-04-05
FR2019057A1 (enrdf_load_stackoverflow) 1970-06-26
NL158742B (nl) 1978-12-15
DE1948532A1 (de) 1970-10-15
NL6914643A (enrdf_load_stackoverflow) 1970-04-01
CA921503A (en) 1973-02-20
GB1241239A (en) 1971-08-04
DE1948532B2 (de) 1972-10-05

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