US3922082A - Bond paper photocopying machine - Google Patents

Bond paper photocopying machine Download PDF

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Publication number
US3922082A
US3922082A US407870A US40787073A US3922082A US 3922082 A US3922082 A US 3922082A US 407870 A US407870 A US 407870A US 40787073 A US40787073 A US 40787073A US 3922082 A US3922082 A US 3922082A
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United States
Prior art keywords
paper
sheet
guide
roll
intermediate portion
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Expired - Lifetime
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US407870A
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English (en)
Inventor
Angelo C Cavallaro
Jon F Crehore
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Cavalier Products Inc
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Cavalier Products Inc
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Priority to US407870A priority Critical patent/US3922082A/en
Priority to CA194,202A priority patent/CA1018240A/en
Priority to GB1299174A priority patent/GB1470394A/en
Priority to JP49065890A priority patent/JPS5068344A/ja
Application granted granted Critical
Publication of US3922082A publication Critical patent/US3922082A/en
Priority to CA262,918A priority patent/CA1015821A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6517—Apparatus for continuous web copy material of plain paper, e.g. supply rolls; Roll holders therefor
    • G03G15/652—Feeding a copy material originating from a continuous web roll
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6517—Apparatus for continuous web copy material of plain paper, e.g. supply rolls; Roll holders therefor
    • G03G15/6523—Cutting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367—The 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"
    • G03G2215/00379—Copy medium holder
    • G03G2215/00383—Cassette
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00443—Copy medium
    • G03G2215/00447—Plural types handled
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00443—Copy medium
    • G03G2215/00451—Paper
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00443—Copy medium
    • G03G2215/00518—Recording medium, e.g. photosensitive
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/0054—Detachable element of feed path
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00789—Adding properties or qualities to the copy medium
    • G03G2215/00814—Cutter

Definitions

  • ABSTRACT A xerographic photocopying machine with provisions for holding a stack of cut sheets of bond copy paper and a supply roll of bond copy paper therein, electrical switch means for selectively activating feeding means for feeding sheets from the stack or feeding and cutting means for feeding sheets to be cut from the end of the paper from the roll, a paper guide to receive copy paper sheets from one direction from the stack and from the other direction from the roll, the guide terminating in a common delivery throat for sheets from either source and including sheet advancing rollers along the guide, and a leading edge sensor for pre-positioning the sheet from either source for subsequent advancement coordinate with the operation of the image forming and transfer mechanism.
  • the paper roll is mounted in convenient position alongside of the copying and stack feeding mechanism for ready roll replacement andthreading of the new roll.
  • the invention may take the formof an attachment for holding a roll of bond paper and for feeding paper from the roll into a machine otherwise designed for feeding only sheets of bond paper from a stack in a trav.
  • the present invention relates to a photocopying machine for reproducing a document or the like, particularly by a xerographic process, on copy paper.
  • Such machines have been known wherein bond copy paper is fed from a stack of precut sheets into contact with a master element carrying toner for transfer to the copy sheet, with subsequent fixing to fuse the toner on the sheet and thus to provide a permanent copy of the original.
  • the machine described in Service Manual, Royal Bond Copier, Royal Typewriter Company, Copier Products, February 1972 8-1, copyright I972 Royal Typewriter Company Division of Litton Industries, printed in USA.
  • a specific object of the invention is to provide a simple roll bond copy paper feeding and sheet severing attachment for a known tray bond copy paper feeding I photocopying machine, which requires minimal modification of the pre-existing machine, provides for ready attachment of the attachment to, and ready integration thereof into, the machine, which will not interfere with .the stack feeding arrangements of the machine, and
  • the roll of paper is mounted directly above the paper tray and both generally underlie the optical scanning system under the top of the cabinet. It is necessary to remove and replace the roll of paper longitudinally of its horizontal axis.
  • the copy paper tray is not only conveniently loadable by pulling it out through the front cabinet doors, as is well known in commercial prior art machines, but the paper roll is conveniently loadable by raising a hinged top panel to expose the cabinet interior in which the roll is mounted, and to expose the paper feed rollers and paper guide portions into which the leading edge of the paper from the roll is to be threaded by hand.
  • a simple manually operated electrical switch selects bond paper feed from the roll to be severed into anyone of two or more length sheetes or from the stack of precut sheets in the tray. The arrangement is protected against malfunction if the selector switch is moved during a cycle.
  • FIG. 1 is a top plan view of a photocopying machine in accord with the invention
  • FIG. 2 is a front elevational view thereof
  • FIG. 3 is a front view of an enlarged scale of a portion of the machine partially broken away and in section taken generally along line 33 of FIG. 1;
  • FIG. 4 is a sectional detail view of a portion of the machine taken along the line 44 of FIG. 1;
  • FIG. 5 is a sectional view taken along line 5-5 of FIG. 3;
  • FIG. 6 is an end view taken at the left hand end of the machine with the cover removed;
  • FIG. 7 is a detail view showing the knife mechanism in relation to associated parts of the machine.
  • FIG. 8 is a sectional detail view on a further enlarged scale taken along line 8-8 of FIG. 5 and further including a representation of paper from the roll being fed through the knife, roll paper guide and roll paper feed rollers;
  • FIG. 9 is a schematic circuit diagram of the novel portions of the control circuit according to the invention, as coordinated with control circuits of a pre-existing tray feed bond copier machine.
  • the invention may be readily-applied in the form of an attachment to the above referenced pre-existing Royal Bond Copier machine, by relocating the paper delivery fan and motor from the left hand end of the machine to a position to the rear of the attachment simply to make room for the attachment, by removing the outer left hand cover wall of the machine, by attaching to the frame of the machine the front and back support plates of the attachment so that these plates extend outwardly from the left hand end of the machine, by providing an interruption of an intermediate portion of the upwardly extending copy paper guide to provide an entrance slot thereinto from the back side of the guide so that paper fed toward the right from the direction of .the roll, which is mounted between the support plates,
  • the paper tray may also enter and pass through the guide, by providing a selector switch to select be-.
  • the selector switch preferrably having two or more roll feed positions for selecting between two or more predetermined lengths of sheets to be severed from the roll, and by making several electrical connections to the attachment from the existing circuits of the copier machine.
  • the machine 1 is seen to comprise a main cabinet or cover 2 for housing the operative components, provided with front access doors 3, and further to include an auxiliary hinged cover section 4 mounted on hinges 5, and indicated in open position by broken lines at 4', forming, when closed, a paper roll chamber.
  • a cover flap or panel 6 covering the exposure glass on which the document is placed for copying, a rest 7 against which the cover panel rests when raised, and a copy delivery tray 8 into which completed copies are deposited by the machine.
  • the machine is provided with indicator lights 9 for warning when it is time to change the electrostatic master elements, to reload the paper tray, and for indicating completion of warm-up time for the mechanism.
  • Print switch button 10 is is located coaxially within a rotatable multiple copy dial 11 on control deck 12, as are pilot light 13, a light-to-dark exposure control 14, and'a copy counter 15.
  • a mode and paper length selector switch 16 is also provided on the deck 12 for selecting paper feed from the tray or, for example, 11 or 14 inch paper sheets to be cut from the roll. 7
  • FIG. 3 shows generally the mechanical elements designed as an attachment to such prior art bond paper copier and generally provided within cover section 4.
  • a pair of upright parallel support plates, of which rear plate 17is seen, are attached to main machine end frame 18 and these plates supportingly journal a shaft -19 in open-top bearings at each end, such as bearing 20 attached to plate 17, the bearings being attached inwardly of the plates.
  • the readily removable shaft 19 carries a replaceable roll 21 of bond copy paper.
  • the roll is maintained in alignment, that is, against axial movement, and a desired drag against unrolling is applied, by means of a drag plate 22 pivotally mounted on axis 23 to the support plates, and the drag plate rests upon the top of the roll.
  • the plate 22 is provided with downturned edge flanges, such as flange 24, which cage the outer turns of the roll therebetween and prevent the roll from moving along'shaft 19. As paper is unrolled from the roll, as seen at 25, the roll becomes progressively smaller and plate 22 approaches its broken line position 22 adjacent roll core member 25.
  • the core member 25 is shorter than the width of the roll paper to provide finger room for grasping the roll for manual removal and replacement thereof.
  • Plate 22 carries an arm 26 which extends rearwardly of the machine through an arcuate slot 27 in support plate 17, and a switch 28 is mounted on the rear face of plate 17 in position to be closed by contact of arm 26 therewith when arm 26 has moved along slot 27 downwardly with plate 22 until the plate reaches its broken line position 22 representing a nearly exhausted-roll.
  • Switch 28 may be connected to operate, when actuated by arm 26, through known means not otherwise shown herein, a roll empty indicator light such as shown at 9 if desired.
  • a roll empty indicator light such as shown at 9 if desired.
  • roller 30 is arranged to be power driven such as by a drive chain from an electric motor not shown, through an electric clutch 107 (seen in FIGS. 5 and 9) which are well known in the art.
  • the drive chain may be typically an extension of the drive for the tray paper delivery drive of the aforesaid Royal Bond Copier.
  • Rollers 30, 31 may be manually rotated while the machine is not being power operated to assist in threading the paper from the roll into its proper path, and after a length of paper has been thus threaded, the knife may be manually operated to sever the first several inches to leave a clean leading edge at the knife assembly.
  • Rollers 30 and 31 are mounted on respective shafts journalled in bearings in the support plates'and knife 33 is similarly rotatably journalled in the plates, while cutter bar 32 is fixed to the support plates.
  • a paper guide 34 underlying the paper and which, as the paper is fed from the roll, directs the paper into transport or delivery rollers 35, 36, the guide being apertured as shown at 37 to permit the several segments or idler roller 35 toproject above the surface of guide 34 into cooperative relation with complementary segments of driven roller 36.
  • the paper guide continues into an upwardly curved portion 38 toward paper delivery rollers 39, 40.
  • switches 41 and 42 are disposed along guide portion 38 beyond rollers 35, 36 but in advance of rollers 39, 40 and are provided with respective sensitive actuating feelers 43 and 44 for opening the respective switch upon contact by the leading edge of the paper from the roll.
  • Feeler 43 is so positioned that at the moment of knife operation, following by a fraction of a second the contact of the paper edge therewith, a sheet precisely eleven inches, for example, will be severed off at cutter bar 32, while feeler 44 will be three inches further along.
  • One or the other of switches 41 and 42 is selectably connected in circuit by manual switch 16 whereby knife 33 is caused to sever an eleven or fourteen inch sheet from the roll upon contact of its leading edge with the feeler of the respective switch.
  • Actuation of the selected switch 41 or 42 by the paper edge serves to operate knife 33 and, at the same time, to open the clutch through which roller 30 is driven. Rollers 35, 36 and rollers 39, 40, however, continue to operate until the leading edge of the now severed sheet reaches the actuating feeler 45 of switch 46, which then operates to cause disengagement of the respective clutches through which paper delivery rollers 36 and 40 are driven.
  • a knife interlock switch 74 having a feeler 75 is disposed back along the guide for actuation by the paper leading edge before the edge reaches feeler 43. Paper from the roll must have closed, and must be maintaining switch 74 closed, in order for knife 33 to operate as hereinafter further described.
  • the feeler 75 of switch 74 is preferably located along the guide 34 between cutter 32 and rollers 35, 36.
  • An upper paper guide section 47 is preferably provided spaced above portion 38 of the lower or outer guide 34 to restrain any tendency of the paper from the roll to rise and to insure that the leading edge will engage and not jump the feelers 43 and 44 and to form a throat 48 adjacently below rollers 39 and 40 through which throat the leading edge is directed accurately into these delivery rollers thereby to minimize any tendency of the paper to bunch or misfeed at this part of its travel.
  • a curved upper paper guide portion 49 is disposed opposite guide portion 38 and is arranged to receive and guide paper sheets fed in a'direction from right to left, as seen in FIGS. 3 and 4, from the stack of copy paper in a tray in a curved path upwardly into rollers 39, 40.
  • Generally upwardly directed paper guide plates 50 and 51 are disposed to receive between their respective outwardly flared lower end portions 52 and 53 the leading edge of a paper sheet being fed upwardly along guide 49 from the tray of the leading edge of a new severed eleven or fourteen inch sheet from the roll of paper issuing from throat 48.
  • Guides 50 and 51 are apertured at 54 and 55 to permit the respective segments of rollers 39 and 40 to extend therethrough and nip the paper sheet which has entered between the lower end portions of the guides.
  • the upper end portions 56 and 57 of the respective guides 50 and 51 are cruved toward the right and form a delivery throat for delivering the copy paper sheet toward and into contact with the master element.
  • Copy paper guide plates 34, 38, 47, 49, 50 and 51 may be mounted by means of angle tabs, such as tab 58, to the side plates, such as plate 17, or to other fixed frame portions of the machine.
  • Tab 59 is shown as so mounting guide 50, as well as guide 51.
  • a duct 86 is provided under cover 4 and readily ac- .cessible when the cover is raised for adding toner to the toner dispenser.
  • FIG. 4 shows elements in accord with the prior art as exemplified by the aforesaid Royal Bond Copier, and ifurther shows certain of the modifications thereto in laccord with the invention, specifically the rearrangement of copy paper guide means which permits the introduction of paper sheets fed from left to right from the roll 21 into the intermediate portion of the copy paper guide means of the prior art machine.
  • Such intermediate portion may be considered to extend from lower end portions 52 and 53 to the paper delivery upon end portions 56 and 57 of guide elements 50, 51.
  • Paper delivery rollers 39, 40 and switch feeler 45 are seen to be located along this intermediate portion.
  • HO. 4 shows an exposure glass or window 60, normally covered by cover flap 6, an optical scanning head 61 with its traversing mechanism 62, a master element assembly 63, a toner dispenser 64 (the toner loading duct for dispensing 64 being omitted for clarity) for storing and dispensing toner to a developer 65, which applies toner onto the surface of the previously exposed master element sheet in the 6 charged image pattern as the master element is moved past the developer by powered drum 66 and idler drum 67.
  • toner dispenser 64 the toner loading duct for dispensing 64 being omitted for clarity
  • the drums of the assembly 63 carry a pair of spaced continuous belts entrained thereon, as indicated at 68, to which replaceable electrostatic master element sheets 69 and 70 are removably attached.
  • Assembly 63 is so arranged as to be movable forwardly by the operator when doors 4 are opened to permit ready replacement of the master elements.
  • a transfer keeper bar plate 71 is pivotally mounted and disposed adjcently below the belts and, thus, adjacent to the path of an exposed master element upon which toner has been deposited.
  • a sheet of copy paper being delivered from delivery end 56, 57 of the paper guide will pass in the direction of arrows 72 over bar 71 and under the advancing master element and will, because of the electrostatic charge on the element, be attracted into contact therewith.
  • a corona unit 73 for so charging the copy paper as to cause the paper to attract the toner to itself and thus to transfer the image from the master element to the paper.
  • the paper remains in engagement and travels with the master element until the element passes a separator roll 76, which is located above the lower flight of the belts and master elements and which deflects them downwardly so that beyond the separator roll the belts and master elements, which extend generally inclinably downwardly from drum 66 to roll 76, extend therefrom generally inclinedly upwardly toward idler drum 67.
  • a vacuum paper separating assembly 77 including a perforated multipart belt 78 entrained over a drive roll 79 and suitable idler rolls 80.
  • the unit 77 is disposed below the paper which is in contact with the master element and is pivotally mounted on the axis of roller 79 to rock up into contact with the paper under the influence of suction applied from a suitable source through duct 82 into a suction box 83 of the separator assembly 77.
  • the suction applied to the paper through the belt perforations holds the paper firmly to the moving belt, and the paper is thus peeled away from the master element by the unit 77 and is advanced by the moving conveyor belt onto a paper guide 84.
  • the multipart conveyor belt 78 comprises a plurality of spaced perforate belt elements which move together around the rolls 79, 80, while guide 84 comprises fingers 85 extending between the belt elements to disengage the paper from the belt 78. It will be noted that box 83 terminates short of guide fingers 85 so that suction is not holding the paper to the belt at the point where the paper is being lifted off by the fingers.
  • the paper sheet passes along guide 84 to a conveyor belt which transport it to a further paper guide 91 disposed under a toner-fixing heater 92 and finally, with the image fixed thereon, the paper is moved along into delivery tray 8 by a rotating delivery roll 93.
  • the master element assembly 63 will be understood to include a first master element sheet 69 and a second master element sheet 70 connected to and carried by continuous belts 68 entrained around drums 66 and 67.
  • optical head 61 moves from its FIG. 4 position toward the right, and, while so moving, scans the document on glass 60 and produces an electrostatic image on master element 69 during a period in which that element remains motionless under the influence of a brake (not shown) in the position shown in FIG. 4.
  • rollers are being operated to feed a sheet of cop'yjpaper from the roll or from the tray and transport the sheet into the intermediate portion of the paper guide and between delivery rollers 39 and 40 up to feeler 45.
  • roller 40 The drive of roller 40 is interrupted by switch 46 as the paper leading edge meets feeler 45.
  • head 61 completes its scan, and as it starts to return to its FIG. 4 position, paper delivery rollers 36 and 40 are again driven and drive of drum 6 is initiated to cause element 69 to move around drum 66, past the toner dispenser 64, and past the toner developer unit 65 from which toner is brushed onto the master, and then into aligned contact with the copy paper sheet being delivered through delivery end 56, 57 of the paper guide and across bar 71.
  • the movement of master element 69 is timed by a cycle timer to coincide with delivery of the paper sheet by roller 40, with the assistance of roller 36 if the sheet is one severed from the roll 21, so that the leading edge of the sheet meets the end of the scanned portion of element 69 and the movement of the element and feeding of the sheet continue at identical speeds so that the sheet aligns with and progressively covers the portion of the element carrying the image of the document.
  • the document glass may be provided with a documentlocating mark 95 adjacent the left hand end of the window.
  • the optical scanning head 61 imposes an electrostatic image of the document, as it moves from left to right, on the stationary master element 69 with the image of the edge of the document positioned at mark 95 appearing along a predetermined line transversely across the master element as indicated at 96, and the leading edge of the copy paper sheet meets this master element at this line when the master element has been moved through the initial portion of its image transfer cycle.
  • the master element remains stationary during the forward scanning by the head, being held stationary by a magnetic brake omitted from FIG. 4 for the sake of clarity.
  • the master elements 69 and 70 will be stationary in the positions shown in FIG. 4.
  • Element 70 is shown in the position which it assumes following its use for transferring a document image. At this time, element 70 may have some residue of toner on its surface and may still carry some electrostatic charge.
  • drum 66 moves element 69 following the formation of the electrostatic image thereon, that is, after a forward scan of the optics head is completed and while the head is being transported back to starting position, element 70 is moved with belts 68 around drum 67- to take the place of element Y69 and to be ready for the next document scan.
  • Unit 97 which may be either a neon glow lamp or corona unit, is provided adjacent the path followed by element 70 on its way to drum 67, unit 97 being operative to discharge any residual charge on the element, and a brush 98 is provided adjacent drum 67 to brush any residual 'toner from the surface of the element 70 as it passes around the drum, whereby the element is discharged and clean when it reaches its upper position under the optics head ready for the next scan.
  • Tray assembly 100 is disposed generally to the right of paper guide 49 and below separating assembly 77 and is provided with a picker or feed roll 101 driven by and along guide 49 upwardly between flared lower end portions 52 and 53 of guide plates 50 and 51 to paper delivery rollers 39 and 40, and by these rollers to be further transported until the leading edge of the sheet meets feeler 45, whereupon the advancing of the sheet is interrupted.
  • the tray assembly 100 includes slide mountings 106 which permit the assembly to be manually drawn forwardly through open doors 4 for reloading with a stack of precut copy paper sheets.
  • FIGS. 5 and 6 Further details of the interior of the auxiliary cabinet and of the paper guide near the adjacent end 18 of the main cabinet frame are illustrated in FIGS. 5 and 6.
  • the elements are identified by the same reference numerals as previously described and the foregoing description with respect thereto is applicable throughout the drawings.
  • Feed rollers 30, 31, 35 and 36 comprise sectionalized or segmented roller sections, such as sections 30' and 30", which project through slots in the paper guide plates, such as slot 29' in guide plate 29, each section of each roller of a pair having correspondence with a respective section of the other roller of the pair so that the paper is nipped between the corresponding sections of the rollers.
  • the paper delivery rollers 39 and 40 disposed at the intermediate portion of paper guide plates 50, 51 are similarly sectionalized with roller section 30' projecting through aperture 54 in plate 50 and, in the absence of paper therebetween, being engaged with roller section 40.
  • the driven rollers 30, 36 and 40 are provided with electrically controlled clutches 107, 108 and 109 connected for driving a motor (not shown) through a suitable drive chain 110, such drive arrangements being well known in the prior art.
  • Knife 33 is actuated by supplying electric current to a solenoid 112 when the leading edge of the paper from the roll meets feeler 43 or 44 as selected by switch 16.
  • the solenoid is mounted to front frame plate 113 of the auxiliary cabinet and its armature 114 is connected to arm 115 fixed to the knife member, as seen in FIGS. 5 7.
  • the arm 115 is moved by the solenoid from its solid line position in FIG. 7 to its broken line position 115' thereby to rotate the knife.
  • the knife returns to open position upon deenergization of the solenoid by gravity or, if desired, a known return spring may be provided.
  • paper 25 from the roll of paper extends between feed rollers 30, 31 and across fixed cutter bar 32.
  • the knife is rotated thirty or forty degrees in a counter clockwise direction upon actuation of the solenoid moving the edge to its position shown at 117' and causa motor represented at 102 by means of which the topw I most sheet 103 is fed from a stack 104 of precutsheets into the receiving end portion 105 of paper guide 49 ing the knife edge to sever a sheet represented at 118 from the advancing end of the paper 25 being fed from the roll.
  • the knife is actuated and the drive of roller 30 is simultaneously interrupted under the control of the respective switch 41 or 42.
  • a cycle is initiated by pressing print button- 10.
  • a cycle timer is started at the end of the foward scan of the optics head which then starts the drive for master drum 66 and restarts paper delivery roller 40 so that the loading edge of the paper sheet meets the leading edge of the scanned portion of the master element 69 above keeper bar plate 71.
  • the copy paper and master element continue along vin contact across corona unit 73 to the separator assembly 77.
  • the developer unit 65 operates to provide toner to the electrostatically charged areas of the master as it rounds drum 66 on its way to meet the copy paper sheet, and corona unit 73 causes transfer of the toner to the copy paper. 7
  • the print button switch further applies power to a 'brake which holds drum 66 stationary throughout the forward scan of the optics head. Before the forward scan is completed, a sheet of copy paper will have reached feeler 45. At the end of the forward scan, this brake is released by a suitable switch actuated by the moving head, and the cycle timer starts, and the head drive is reversed to return the head to its original ready position.
  • FIG. 9 shows the schematic diagram of the control circuit for the roll paper feed sections of the machine as connected to portions of the control circuits of a prior art bond paper tray feed machine as typified by the :aforesaid Royal Bond Copier.
  • the main power source is represented by terminals 120 and a cycle is initiated by closing print switch 10.
  • Selector switch 16 comprises three ganged three-position blades 121, 122 and 123 which are shown in their positions corresponding to selection of sheet feed from the tray.
  • the switch may be manually operated into a position to select a feed from the roll of eleven inch sheets, and in this position blades 121, 122 and 123 are in contact with switch contacts 125, 126 and 128, re- .spectively.
  • the machine In its third position, with the blades in Contact with contacts 127, 129 and 130 respectively, the machine is so set that fourteen inch sheets will be ;severed from the roll and fed to the guide means.
  • switch 16 With switch 16 set for tray feed, when print button iswitch is depressed voltage is supplied through blade r123 and contact 131 to relay coil 132 causing the coil :toclose contacts 133 to establish a holding or bootstrap Ecircuit maintaining the coil energized, and to open contacts 134.
  • moving switch 16 into a roll feed position has no effect since coil 132 remains energized until, after the end of the feeding part of the cycle, the optics head has moved into contact with a pawl 137 under which ratchet 136 was engaged upon depression of button 10 and under which it is thereafter retained pending release.
  • the blade 122 of the switch 16 is seen to complete a circuit through contact 133 and through normally closed relay contacts 153 between conductors 163 and 164. These conductors are in circuit with a relay, (not shown) which initiates operation of the tray feed motor and clutch, and which, once triggered to do so, continue the feeding operation in timed sequence until a sheet from the tray meets feeler 45 of switch 46 and thereby interrupts the supply of power to clutch 109 for the paper delivery roller 40.
  • Clutch 108 for roll paper delivery or transport roller 36 is connected in parallel with clutch 109 whereby roller 36 is driven whenever roller 40 is driven.
  • Switch 16 Positioning of switch 16 to select eleven inch or fourteen inch sheets from the paper roll disengages blade 123 from the circuit in relay coil 132, whereby contacts 134 remain closed and voltage is now applied, from switch 10, when closed, through blade 123 and contact 128 or and thence through relay contacts 134 to relay coil 155 causing contacts 153 to open and contacts 156 to close.
  • Closing of contacts 156 establishes a holding circuit for the relay in parallel with the circuit through contacts 134 and switch blade 123 to contact 128 or 130, whereby the coil remains excited regardless of subsequent movement of switch 16. Even if, after the start of a cycle, switch 16 were returned to the tray feed position resulting in energization of relay coil 132, the cycle would continue in the selected roll feed mode, with contacts 153 remaining open.
  • Contacts 153 are, as shown, in circuit with the means for initiating operation of the tray feed motor 102 and, when open, prevent operation.
  • relay coils 132 and 155 are excited in accord with the selection of the mode of operation between tray feed and roll feed, and when excited, each of these relays establishes a holding circuit for maintaining its respective coil energized, and in so doing, in the case of coil 132, disconnects coil 155 against subsequent excitation and, in the case of coil 155, interrupts the connection to the circuit for the tray feed mechanism so that that mechanism cannot thereafter be actuated, thereby preventing subsequent movement of switch 16 from affecting the originally selected feeding operation.
  • switch 28 will be open and no operation of the roll paper feed roller 30 will occur.
  • the master element transport is braked during the period from the initiation of a print cycle until the completion of the forward scan of the age across coil 151 to electromagnetic clutch 107 thereby to cause roller to feed paper from the roll.
  • Knife solenoid 112 fires upon the application of dc. voltage thereto.
  • One terminal of the solenoid is directly connected to rectifier terminal 145, while the other is connected to terminal 146 through relay switch contacts 168 and knife interlock switch 74 in series.
  • Switch 74 is a roll paper feed knife interlock which remains open until roll paper has been fed along the guide for some distance after the relay contacts 168 and l69'have picked up, that is, until the leading edge of the roll paper has met feeler 75 located along guide 34 and has thus caused switch 74 to close.
  • Knife solenoid 112 is fired, if eleven inch roll paper is selected,-upon the leading edge of the paper, having heretofore closed switch 74, reaching feeler 43, whereupon switch 41 opens, breaks the circuit to coil 167 and causes closing of knife actuating contacts 168 and simultaneous opening of contacts 169. Such opening results in deenergization of roll paper feed clutch 107 and stopping of feed roller 30.
  • switch 16 opening of switch 41 causes relay coil 167 to be deenergized and the knife to fire. If, during the very short period of time thereafter that is required for the paper edge to travel the three inches from feeler 43 to feeler 44 of switch 42, switch 16 were changed to the fourteen inch position, relay coil 167 might have timeto again open contacts 168 and to permit the knife to recover, and at the same time to reenergize feed roller clutch 107, and then upon subsequent opening of switch 42, the knife would again fire, perhaps severing an inch or two of paper which might have reached the knife, but the cycle would continue with the eleven inch sheet being transported and delivered in normal manner.
  • switch feeler 43 is positioned a fraction of an inch less than eleven inches along the paper guide from cutter bar 30 so that by the time the knife operates after switch 41 opens an eleven inch sheet will be severed, and on the assumption that feeler 44 is simi larly position but further along the paper guide to effec- I tuate severing of a fourteen inch sheet.'lt will be apparent that such sheet sizes are exemplary only, and that the switch feelers may beso located as to cause any other desired sheet lengths to be severed, and, if de-' sired, other selectable sheet length switches may be added at other distances along the guide from bar 30 to permit selection of three or more different sheet lengths to be severed from the roll.
  • contacts 128 and are interconnected the only circuit change when switch 16 is moved from the eleven inch sheet length position to the fourteen inch length is tosubstitute switch 42 for switch 41 in the circuit, blade 121 being now in contact with contact 127. It will be noted that contacts 128 and 130 for blade 123 are interconnected, while blade 122, in positionfor roll feed, is engaged with isolated contacts 126 or 129.
  • paper delivery rollers 40 and 36 are driven during the first part of the cycle by energizing clutch coils 108 and 109, which are connected in parallel. Such energization is originally supplied from conductors and 171 through switch 46. Conductors 170 and 171 remain energized from the start of the cycle at least until the copy paper has been fed out through delivery ends 56, 57 of the paper guide into contact with the toner-carrying master element.
  • a xerographic bond paper photocopying machine the combination of a pair of spaced, upwardly extending paper guide members for guiding a sheet of copy paper therebetween and terminating upwardly in paper delivery ends, a horizontal document window disposed above said paper delivery ends, said guide members having flared apart lower end portions, a horizontal paper tray adapted to hold a stack of precut bond copy paper laterally spaced in a predetermined direction from one side of said members, means including a paper guide extending from said tray and comprising an upwardly curved end portion terminating between said flared lower end portions for feeding a sheet of paper from a stack in said tray in a direction'opposite to said predetermined direction toward and upwardly between said guide members, a bond copy paper roll holder adapted to hold a roll of paper laterally spaced in a direction opposite to said predetermined direction fromthe opposite side of said members,.means disposed adjacent saidholder and between said holder 13 and said paper guide members for drawing paper from such roll and severing from the paper from such'roll a
  • a xerographic copy machine comprising a paper tray forreceiving a stack of precut bond copy paper sheets of uniform size, a master electrostatic image element, means to charge said element from an original document and to apply toner thereto, said element beingadapted to receivea single sheet of said copy paper in registering contact therewith while such sheet receives toner corresponding to the electrostatic image on said master element, a paper sheet guide having a receiving end and a delivery end for receiving a sheet of paper from said stack at its receiving end and directing such sheet to its delivery end, said delivery end being disposed adjacent said element, said guide having an intermediate portion between its said ends, a sheet feeder engageable with one sheet at a time seriatim of said stack operable to advance such, one sheet from said .stack into said receiving end to said intermediate portionof said guide, conveying means at said intermediate portion engageable with the sheet introduced thereinto by said feeder movable ina direction to convey the sheet along said guide through said intermediate portion to and projectingly beyond said delivery
  • land sequencing switch means for actuating said conveying means, said master element moving means, and lsaid charging means in predetermined relation and including a sensing switch for sensing the arrival of the ;leading edgeof a sheet at a predetermined location between said conveying means and said delivery end, said sensing switch being operative to stop said conveying means upon such arrival, said sequencing switch means including means for subsequently re-starting said conveying means in coordination with operation of said master element moving means thereby to register said leading edge at a predetermined part of the toner-carrying master element, the improvement comprising, 'means for mounting a roll of paper, roll paper guide means having a receiving end portion adjacentsaid roll and a delivery end adjacent said intermediate portion, transport means comprising a first element adapted and positioned to engage the end of the paper from said roll and operative to advance paper from said roll into'said 14 receiving end portion of said roll paper guide means and said transport means further
  • a xerographic bond paper copying machine of the type comprising a main cabinet having a first end, a second end, a front, and a top with a horizontal document window therein, saidfront being provided with an opening and a closure therefor, an electrostatic image element and an optical document scanner below said window housed in said main cabinet, a copy paper tray disposed below said image element and scanner during operation of said machine and displaceable forwardly through said opening for loading a stack of precut sheets of bond copy paper thereinto, means for feeding sheetsone at a time from said trayin a first generally horizontal direction toward said first end, a paper guide having a lower end for receiving said sheets from said feeding means and having an intermediate portion extending upwardly adjacent said first end of said cabinet, said guide curving upwardly from its said lower end into such intermediate portion, said intermediate portion terminating in an upper end portion of said guide directed toward said second end of said cabinet for directing sheets from said intermedi ate portion in a generally horizontal second direction opposite to said first direction toward said image element, and
  • paper sensing switch means are provided along said roll paper guide means a predetermined distance toward said termination of said guide means from said knife means operative to actuate said knife upon Contact of the leading edge of the paper advancing along said guide means thereby to sever into a sheet a length thereof corresponding to said predetermined distance.
  • a xerographic bond paper copying machine of the type comprising a main cabinet having a first end, a second end, a front, and a top with a horizontal document window therein, said front being provided with an opening and a closure therefor, an electrostatic image element and an optical document scanner below said window housed in said main cabinet, a copy paper tray disposed below said image element and scanner during operating of said machine and displaceable forwardly through said opening for loading a stack of precut sheets of bond copy paper thereinto, means for feeding sheets one at a time from said tray in a first generally horizontal direction toward said first end, a first paper guide having a lower end for receiving said sheets from said feeding means and having an intermediate portion extending upwardly adjacent said first end of said cabinet, said guide curving upwardly from its said lower end into such intermediate portion, said intermediate portion terminating in an upper end portion of said guide directed toward said second end of said cabinet for directing sheets from said intermediate portion in a generally horizontal second direction opposite to said first direction toward said image element, and a sheet
  • a xerographic copy machine comprising a paper tray for receiving a stack of precut bond copy paper sheets of uniform size, an elongated generally horizontal image element assembly having a paper sheet receiving end and being disposed above said paper tray, said assembly comprising a master electrostatic image element, means to charge said element corresponding to indicia on an original document and to apply toner thereto, said paper tray being generally horizontally disposed and having a sheet delivery end oriented in the same direction as said sheet receiving end, said element being adapted to receive a single sheet of said copy paper in registering contact therewith while such sheet receives toner corresponding to the electrostatic image on said master element, a paper sheet guide having a receiving end confronting said delivery end of said tray for receiving a sheet of paper fed from said stack in said direction and said guide having a delivery end confronting said receiving end of said assembly, said guide being operative to direct a sheet received from said stack in said direction at its said receiving end to its said delivery end and in said opposite direction to said receiving end of said assembly, said guide having an
  • a main cabinet having a first end, a second end, a front, and a top with a horizontal document window therein, said front being provided with an opening and a closure therefor, an electrostatic image element and an optical document scanner below said window housed in said main cabinet, a copy paper tray disposed below said image element and scanner during operating of said machine and displaceable forwardly through said opening for loading a stack of precut sheets of bond copy paper thereinto, means for feeding sheets one at a time from said tray in a first generally horizontal direction toward said first end, a first paper guide having a lower end for receiving said sheets from said feeding means and having an intermediate portion extending upwardly adjacent said first end of said cabinet, said guide curving upwardly from its said lower end into such intermediate portion, said 18 intermediate portion terminating in an upper end portion of said guide directed toward said second end of said cabinet for directing sheets from said intermediate portion in a generally horizontal second direction opposite to said first direction toward said image element, and a sheet delivery

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Paper Feeding For Electrophotography (AREA)
US407870A 1973-10-19 1973-10-19 Bond paper photocopying machine Expired - Lifetime US3922082A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US407870A US3922082A (en) 1973-10-19 1973-10-19 Bond paper photocopying machine
CA194,202A CA1018240A (en) 1973-10-19 1974-03-06 Bond paper photocopying machine
GB1299174A GB1470394A (en) 1973-10-19 1974-03-22 Bond paper xerographic photocopying machine
JP49065890A JPS5068344A (enrdf_load_stackoverflow) 1973-10-19 1974-06-10
CA262,918A CA1015821A (en) 1973-10-19 1976-10-07 Bond paper photocopying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US407870A US3922082A (en) 1973-10-19 1973-10-19 Bond paper photocopying machine

Publications (1)

Publication Number Publication Date
US3922082A true US3922082A (en) 1975-11-25

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ID=23613879

Family Applications (1)

Application Number Title Priority Date Filing Date
US407870A Expired - Lifetime US3922082A (en) 1973-10-19 1973-10-19 Bond paper photocopying machine

Country Status (4)

Country Link
US (1) US3922082A (enrdf_load_stackoverflow)
JP (1) JPS5068344A (enrdf_load_stackoverflow)
CA (1) CA1018240A (enrdf_load_stackoverflow)
GB (1) GB1470394A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4975781A (en) * 1986-04-25 1990-12-04 Kabushiki Kaisha Toshiba Apparatus for preventing paper clogging in a recording device
US5072306A (en) * 1989-04-03 1991-12-10 Sharp Kabushiki Kaisha Sheet feeding device for facsmile apparatus
EP0429303A3 (en) * 1989-11-22 1992-01-15 Mita Industrial Co. Ltd. Image forming apparatus and roll paper cutting device
EP0488662A3 (en) * 1990-11-30 1992-10-14 Mita Industrial Co. Ltd. Paper feeder
EP0448023A3 (en) * 1990-03-19 1992-10-28 Mita Industrial Co., Ltd. Construction of supporting shaft of roll paper
US20190121275A1 (en) * 2017-10-24 2019-04-25 Toshiba Tec Kabushiki Kaisha Paper feeding device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5463851A (en) * 1977-10-31 1979-05-23 Toshiba Corp Electrochromic display device
JPS55120065A (en) * 1979-03-09 1980-09-16 Ricoh Co Ltd Electrophotographic copier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463584A (en) * 1963-12-06 1969-08-26 Olivetti & Co Spa Photocopying machine
US3503677A (en) * 1966-05-30 1970-03-31 Ricoh Kk Electrophotographic copying machine
US3684373A (en) * 1970-09-08 1972-08-15 Ralph I Berge Contact printing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463584A (en) * 1963-12-06 1969-08-26 Olivetti & Co Spa Photocopying machine
US3503677A (en) * 1966-05-30 1970-03-31 Ricoh Kk Electrophotographic copying machine
US3684373A (en) * 1970-09-08 1972-08-15 Ralph I Berge Contact printing apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4975781A (en) * 1986-04-25 1990-12-04 Kabushiki Kaisha Toshiba Apparatus for preventing paper clogging in a recording device
US5072306A (en) * 1989-04-03 1991-12-10 Sharp Kabushiki Kaisha Sheet feeding device for facsmile apparatus
EP0429303A3 (en) * 1989-11-22 1992-01-15 Mita Industrial Co. Ltd. Image forming apparatus and roll paper cutting device
US5216471A (en) * 1989-11-22 1993-06-01 Mita Industrial Co., Ltd. Image forming apparatus and roll paper cutting device
EP0448023A3 (en) * 1990-03-19 1992-10-28 Mita Industrial Co., Ltd. Construction of supporting shaft of roll paper
US5244163A (en) * 1990-03-19 1993-09-14 Mita Industrial Co., Ltd. Construction of supporting shaft of roll of paper
EP0488662A3 (en) * 1990-11-30 1992-10-14 Mita Industrial Co. Ltd. Paper feeder
US5281991A (en) * 1990-11-30 1994-01-25 Mita Industrial Co. Ltd. Paper feeder driveable independently of an image forming apparatus
US20190121275A1 (en) * 2017-10-24 2019-04-25 Toshiba Tec Kabushiki Kaisha Paper feeding device
US10845745B2 (en) * 2017-10-24 2020-11-24 Toshiba Tec Kabushiki Kaisha Paper feeding device

Also Published As

Publication number Publication date
CA1018240A (en) 1977-09-27
JPS5068344A (enrdf_load_stackoverflow) 1975-06-07
GB1470394A (en) 1977-04-14

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