US3918805A - Carriage and coupling arrangement for a document copying machine - Google Patents

Carriage and coupling arrangement for a document copying machine Download PDF

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Publication number
US3918805A
US3918805A US351288A US35128873A US3918805A US 3918805 A US3918805 A US 3918805A US 351288 A US351288 A US 351288A US 35128873 A US35128873 A US 35128873A US 3918805 A US3918805 A US 3918805A
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United States
Prior art keywords
carriage
chain
copy
movement
copy sheet
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Expired - Lifetime
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US351288A
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English (en)
Inventor
Walter Limberger
Heir By Jurgen Limberger
Heir By Ursula Limberger
Wely Francois Prick Van
Uwe Winzentsen
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.)
Lumoprint Zindler KG and Co GmbH
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Lumoprint Zindler KG and Co GmbH
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Priority to US05/449,021 priority Critical patent/US3933349A/en
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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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning
    • 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
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/62—Holders for the original
    • G03B27/6207—Holders for the original in copying cameras
    • G03B27/6221—Transparent copy platens
    • G03B27/6235—Reciprocating copy platens

Definitions

  • a copying machine for producing one or more copy sheets from a document original has a carriage for the Original which is driven by an endless circulating chain.
  • the carriage is uncoupled from the Chain at each end Of its reciprocating stroke and the further movement of the chain then actuates other control functions while the carriage is stationary and uncoupled. Only One driving motor is therefore needed in the machine.
  • the copy sheet guide path is defined in relation to the movement of the carriage so that a copy sheet traverses the whole guide path during one reciprocating stroke Of the carriage.
  • the copy sheets are held in a cassette-type stack holder which is inserted vertically and which forms an extension of a vertical leg of the copy sheet guide path.
  • This invention relates to copying machines for producing a copy or copies from an original which is laid on a reciprocably movable carriage which is driven by a chain drive having a circulating chain.
  • the present invention is concerned more particularly with copying machines of this type which incorporate a holder for a stack of sheet-form copy material, a document scanning mechanism which includes a scanning aperture in the path of movement of the carriage and an exposure aperture in the path of the copy sheet material, a copy sheet charging device, a developing device for the exposed copy sheets, and a drying device, and wherein drive means are provided for the carriage and for the sheet-form copy material.
  • the known coupling means are not only complicated but they also raise the problem of ensuring that the original .to be copied and its carriage on the one hand and the copy sheet material on the other hand are brought in exact spatial and timed synchronization to their respective correct positions at the scanning and exposure apertures respectively. Any play in the coupling components impairs the necessary synchronization.
  • the drive motor for the carriage is also used to control and to drive feed means for the copy sheet material, with the result that synchronization is achieved between the movement of the carriage and the movement of the copy sheet material in a particularly favourable way. Further, it also means that control functions can be performed with the carriage uncoupled, and the drive motor can be comparatively small because it drives the carriage and said other controls alternately.
  • a slide block in which a vertically slotted guide is reciprocably movable parallel to the carriage, the guide being interlocked with a pin carried by the endless chain, and the slot in the guide being of a length at least equal to the distance between two main lengths of the chain.
  • Releasable coupling means are provided in the slide block which effect a rigid locking of the slotted guide in the slide block in each of the two directions of movement thereof. In this way the engagement between the chain and the slotted guide is always maintained intact.
  • the coupling means are preferably formed simply as levers which are pivotable against spring force. Striker elements are preferably provided on a support panel of the machine in the vicinity of the areas where the chain reverses its direction of movement, these striker elements being arranged to lift the levers from their engagement with the slotted guide. This is particularly advantagcous because the couplings co-operate with projections on one side only of the slotted guide. Thus, such projections/coupling means may be arranged above and below the slide block and respectively act only in one direction of driving movement.
  • control shaft provided with control cams and drive members in order to provide a central control for the machine.
  • control shafts may be formed as switching rollers.
  • a control shaft fitted with a driving disc with cams which is rotatable through the cams by means of pins provided on the chain.
  • the control shaft is movable when the carriage is stationary and uncoupled, and this is particularly advantageous.
  • the driving disc is arranged coaxially with respect to a driven shaft of one of the sprocket wheels for the chain and the control shaft is preferably guided by this driven shaft which is formed as a hollow shaft.
  • a drive motor can then be directly flanged on to the driven hollow shaft.
  • the driving disc has two cams displaced relative to one another by about 120 and which project into the path of movement of pick-up pins arranged at suitable distances apart on the chain.
  • One of these pick-up pins is preferably the pin which engages with the slotted guide.
  • only one driving motor is provided for the movable parts of the machine and the guide path for the copy sheets is so defined in relation to the movement of the carriage that a copy sheet traverses the whole of the guide path for the copy sheet material during one back and forth movement of the carriage.
  • the driving motor is preferably triggered by a copying master switch which drives and/or switches on the chain, the copy sheet withdrawal roller by way of the control shaft, an element determining the input of the copy sheet material, a multiple copy mechanism, and also a supplementary toner device.
  • a copying master switch which drives and/or switches on the chain, the copy sheet withdrawal roller by way of the control shaft, an element determining the input of the copy sheet material, a multiple copy mechanism, and also a supplementary toner device.
  • an abutment which co-operates with an actuating member of the copying master switch and which is in locked engagement with the multiple copy mechanism in such a manner that this abutment causes the opening of the copying master switch when the multiple copy mechanism is in its initial position.
  • the aforementioned abutment is arranged on a trip lever which is subject to a spring force and which is in engagement with the multiple copy mechanism and which in its initial position is movable away from the locking position for the actuating lever of the copying master switch. Upon this release, a continuous back and forth movement of the carriage is controlled by a particularly simple means when multiple copies are to be made from a single original.
  • the accurate entry of the copy sheet material into its guide path may be achieved without the use ofinvolved control means by providing a movable trip member positioned in front of the feed means in the guide path for the copy sheet material, the trip member acting to hold back the leading edge of the copy sheet from entry into the feed means of the guide path until the original and its carriage have reached a predetermined position.
  • a pivotable blade which is positioned subsequent to the copy sheet stack holder and a withdrawal roller and in the guide path of the copy sheet material in advance of a pair of driven feed rollers.
  • the pivotable blade is movable by the control shaft to a position in front of the nip of the rollers of the feed roller pair for the feeding of a copy sheet towards the nip and in dependence upon a predetermined position of the chain is movable away from the nip in order to free the leading edge of the copy sheet for movement into the nip of the rollers.
  • this blade must be located as far as is possible immediately at the nip of the rollers.
  • the rollers of the feed roller pair preferably comprise disc-type sections and the blade has cutaway portions which match and fit the positions of the disc-type roller sections.
  • a short structural length of the machine is achieved in that the copy sheet stack holder is arranged vertically as an extension of a vertical leg of the guide path for the copy sheet material and is arranged to be fitted into a receiving pocket at one side of which is positioned the copy sheet withdrawal roller and at the other side of which are arranged extensible support and counterpressure means for the copy sheets in the stack holder.
  • the support and counterpressure means including at least one counterpressure roller mounted in the pocket on a slotted guide movable in the direction towards the copy sheet withdrawal roller and also under a spring loading, the counterpressure roller being mounted on a support having a cam-type projection extending into the path of movement of a restoring star member which is connected to a spring-loaded setting lever by means of a unidirectional coupling, the setting lever projecting over the cassette-receiving pocket in its free position and upon relative to fixed components of the machine.
  • FIG. 1 is a schematic side view of a first embodiment of copying machine in which the more important functional parts of the machine are shown schematically;
  • FIG. 2 is a side view of the copying machine, similar to the view of FIG. 1, but in which in order to show the drive means more clearly the view is taken from externally of one side support panel adjacent to the parts involved in the copying process;
  • FIG. 3 is a side view from the other side of the copying machine, i.e. the machine operators side, and looking towards the other side support panel which is at the other side of the parts involved in the copying progress;
  • FIG. 4 is a view of the machine when open, and as viewed from the right-hand side of FIG. 1;
  • FIG. 5 is an illustration on an enlarged scale of a drive element, and partly illustrating the connection between the carriage for the document original and the drive chain;
  • FIG. 6 is a plan view of part of FIG. 1 with the carr'iage and top panel removed to illustrate more clearly the control shaft arrangement;
  • FIG. 7 is a sectional view taken along the line VII- "VII of FIG. 6 showing on an enlarged scale the controlled part, i.e. an arresting element for copy sheet material which is illustrated also in FIG. 4;
  • FIG. 8 is a view of a part of the machine as shown in FIG. 2 on an enlarged scale
  • FIG. 9 is a side view in section taken along the line IXIX of FIG. 6 to show the control of the copying master switch and its interlocking with a multi-copy mechanism;
  • FIG. 10 is a detail view on an'enlarged scale of a part of the machine shown in FIG. 1 to illustrate the counterpressure roller and is a section taken along the line X-X of FIG. 11;
  • FIG. 11 is a partial side view of FIG. 10;
  • FIG. 12 is a sectional view taken along the line XII- XII of FIG. 11, but only showing those parts necessary for an understanding of this part of the machine;
  • FIG. 13 is a schematic electrical circuit diagram of the copying machine
  • FIG. 14 is a side view, similar to that of FIG. 1, of a copying machine which differs slightly from that of FIG. 1, and showing particularly the arrangement and function of a cassette for holding a stack of copy sheets; and,
  • FIG. 15 is an electrical control circuit for the machine illustrated in FIG. 14.
  • FIGS. 1 to 4 and 14 The basic construction of the copying machines is shown schematically in FIGS. 1 to 4 and 14.
  • the machine has a casing which is indicated at 160 in FIG. 14. Within the casing 160 are arranged two lateral support panels 1 and 2 and a base plate 3. The ma chine casing 160 has an upper side 21.
  • a cassette 4 which is set in an upright position and which is partially received in a pocket 5. Adjacent to this cassette 4 and in the guide path for the copy sheet material are provided permanently driven pairs of feed rollers 6, 7 and 8. Between the pairs of feed rollers 6 and 7 there is arranged a con ventional copy sheet charging device 9 with discharge wires, and between the pairs of feed rollers 7 and 8 there is arranged an exposure aperture 10 with an exposure plate 11.
  • the reference numeral 161 in FIG. 14 indicates a plate-like counterpressure or guide means.
  • a developing unit 12 in which the previously vertical copy sheet guide path changes direction; the subsequent substantially horizontal leg of the guide path includes a permanently driven pairof squeeze and feed rollers 13 and further transport rollers l4, l5 and 16, by means of which a copy sheet is transported to a delivery area 17.
  • This delivery area 17 is accessible from the side of the machine at which the operator stands, as can be seen best from FIG. 3.
  • the lateral support panel 2 is provided with an aperture 18.
  • an end panel 19 (FIGS. 3 and 14) of the copying machine is open in front of the delivery area 17 so that the copy sheets can be withdrawn.
  • a drying fan 20 is provided inside the machine in the region of the delivery area 17 and is directed towards the copy sheets as they arrive at the delivery area.
  • Rails 22 are provided at the upper side 21 of the machine and as shown extend out beyond the actual machine casing.
  • a carriage 23 which is arranged to receive a document original is guided on the rails 22 for back and forth reciprocating movement as indicated by the arrow 181.
  • the carriage 23 is movable back and forth over a scanning aperture 24 in the upper side 21 of the machine casing.
  • a reflector 26 which turns the image through and along a horizontal section 27 of the tunnel.
  • the light tunnel terminates at the exposure aperture 10.
  • Optical means 28 may be provided in the horizontal section of light tunnel.
  • Scanning light sources 158 are provided at each side of and below the scanning aperture 24.
  • the carriage 23 may comprise a frame guided on the rails 22 and incorporating a transparent plate on which a document original is laid.
  • a hingeable cover 29 is secured to the carriage 23 and provides a top cover for an original laid on the transparent plate.
  • Such covers are well-known.
  • the carriage 23 is driven by an endless chain 30 which runs around two sprocket wheels 31 and 32.
  • the sprocket wheel 32 has a driving disc 33 mounted coaxially therewith, the driving disc being shown on an enlarged scale in FIG. 8.
  • the carriage drive is best understood from a consideration of FIGS. 2, 5 and 8.
  • a slide block 34 which is shown enlarged in FIG. 5 is provided on the carriage 23 outside the lateral support panel 1 and extending down at the side of it.
  • a slotted guide 35 having a vertical slot 36 is mounted in the slide block 34 for reciprocating movement on runners 37 and 38 which extend in the longitudinal direction of the machine.
  • the slot 36 has a length which corresponds at least to the distance between the two horizontal sections 39 and 40 of the chain 30.
  • a pin 41 carried by and projecting from the chain 30 is permanently engaged in the slot 36. As the chain 30 moves around the sprocket wheels 31 and 32 so this pin 41 entrains the slotted guide 35 to traverse it over the whole longitudinal extent of the chain 30.
  • FIGS. 14 and 15 Above the pair of feed rollers 7 there is positioned a charging device 9 above which is arranged a mechanism indicated generally at 162 comprising copy sheet withdrawal roller means and transport means for feeding copy sheets to the charging device.
  • a housing extension 164 projecting up above the upper surface of the machine casing.
  • the front end walls 165 of the extension 164 remote from the upper edge 21 of the machine casing extends to forma top face 166 of the extension.
  • this casing extension 164 there is provided a recess 167 which is accessible from the top through an aperture 5.
  • the recess 167 is closed at its sides and extends down as far as a copy sheet withdrawal roller 82 which is arranged to be driven and which is mounted within the casing.
  • This copy sheet withdrawal roller 82 projects into the recess 167 so that it presses against the uppermost sheet of a stack 168 of copy sheets in a cassette-type copy sheet stack holder 4 which can be fitted into the recess 167.
  • the wall 169 of the stack holder 4 which is at the side facing the copy sheet withdrawal roller 82 has a hole at its end opposite the roller. This hole is indicated at 170 and is provided so that the roller 82 can press directly against the copy sheet material which is within the eassette-type stack holder 4.
  • the wall 171 on the other side of the stack holder is provided at this same lower end either with holes or with a section 172 of wall which can be pivoted about a hinge and through which or against which, upon the introduction of the cassettetype stack holder, compression springs 173 act respectively in order to press the copy sheets in the holder towards the withdrawal roller 82.
  • the copy sheet withdrawal and feed means includes in the illustrated embodiment a pair of rollers 6 which consist of a driven roller 174 and a co-operating roller 175 having a flat area on its peripheral surface and which is also illustrated in FIG. 2. Such a roller pair is described for example in British Pat. Specification No. 1,229,323 and in U.S. Pat. No. 3,552,849.
  • a spring 102 acts upon the roller 175 having the flat surface area. Moreover, this roller 175 is provided on an adjacent disc which lies next to the nip between the rollers 174 and 175 and outside an end roller bearing with a locking slot 176. A locking lever 177 engages in the slot 176 and is mounted for pivotal movement at 178. When this looking lever 177 is released, the spring 102 draws the rollers 175 in the counterclockwise sense, so that the arcuate portion of the periphery of the roller 175 comes into contact with the driven roller 174 and a copy sheet positioned in the nip is entrained by the rollers.
  • an arm 179 is provided on the lever 177 and actuates a switch 180 which will be re ferred to again later.
  • the entry to the developing unit 12 which includes a curved guide surface 163. A more detailed description of this part of the machine is unnecessary since such developing units are well-known.
  • the further pair of feed rollers 13 through which the copy sheets coming from thedeveloping unit are passed, the copy sheet then moving over guide means 14 and 15 to the delivery area 17.
  • the delivery area 17 can be made accessible through a side wall of the machine which is cut away at the appropriate position, or may be accessible through the end wall 19 of the machine, in order to be able to take out the finished copies.
  • rails 22 are provided on the upper side 21 of the machine casing for guidance of the carriage 23 back and forth in the direction of the double-head arrow 181.
  • As'drive means for the carriage 23 there is provided, for example, a chain drive guided over two sprocket wheels 31 and 33, the chain being provided with a pin 58 which moves in a vertical slot 36 in a slotted guide 35.
  • the slot 36 is of such a length that the pin 58 remains in the slot as it traverses along the length of the upper and lower sections of the chain.
  • This guidance arrangement is shown only by way of example.
  • the construction and arrangement of the slotted guide 35 is also only shown in simplified form in FIG. 14. For example, the slotted guide 35 is shown immediately adjacent to the carriage 23.
  • This chain drive with the sprocket wheels 31 and 33 is preferably positioned alongside the horizontal section 27 of the light tunnel carrying the scanned image to the exposure aperture.
  • a main electrical circuit 182 which incorporates the fan 20 is arranged to be switched into operation by means of a main switch 159.
  • this main switch 159 By means of this main switch 159 the copying machine is brought to an operational ready state.
  • the copy sheet withdrawal roller 82 is associated with a control disc 183 (FIG. 14) with a drive which can be set for a preselected number of revolutions.
  • This drive is shown only schematically in FIG. 14 by the illustration of a motor coupling unit 184, and is switched into operation by a separate switch 185 when a copy is to be produced.
  • a control motor 68 which drives the roller 174, the feed roller pairs 7, 8 and 13 and also the sprocket wheel 33 by means of a chain 71 is also located in the machine. The electrical circuit for this motor 68 is made ready by the main switch 159.
  • It includes two parallel branches 187 and 186, the branch 187 including the above-mentioned switch 180 and the other branch 186 including a switch 123 which is actuated directly by the carriage 23 when the carriage is positioned in its withdrawn end position as shown in FIG. 1. In this position of the carriage the switch 123 is open.
  • the scanning light source 158 and the copy sheet charging device 9 are also connected into the electrical circuit which includes the two branches 187 and 186.
  • the switch 185 is closed by .theoperator.
  • the copy sheet withdrawal roller 82 then feeds a copy sheet into the nip of the rollers 174 and The leading edge of the copy sheet unlocks the roller 175 by actuating the lever 177, with the result that the switch closes and the motor 68 which controls movement of the carriage 23 is switched into circuit.
  • the slotted guide 35 can be locked relative to the slide block within the rails 37, 38 in the respective directions of movement by coupling means formed as pivotable levers 42 and 43.
  • These coupling levers each represent in practice a unilaterally acting arrester member.
  • the pivotable levers, of which the one, 42, is arranged above the rails 37 and 38-and the other, 43, is arranged below the rails 37 and 38, are pivotable respectively about pins 44 and 45 on the slide block.
  • the levers have extension pieces 46 and 47 respectively at the ends at which they are pivotably mounted, these extension pieces having springs 48 and 49 secured thereto which are secured at their other ends to fixed pins 50 and 51 on the slide block.
  • the levers 42 and 43 Towards their pivotally movable ends the levers 42 and 43 have arresting surfaces 52 and 53 respectively by which the slotted guide 35, which has corresponding abutment surfaces, can be engaged for joint movement of the guide and slide block.
  • the slotted guide 35 is provided with respective upper and lower grooves forming tracks engaged by the rails 37 and 38 with flanges either side of the tracks, and the abutment surfaces of the slotted guide are preferably formed by lateral projections jutting out behind the rails 37 and 38 as they are viewed in FIG. 5.
  • the pivotally movable ends of the levers 42, 43 each have an inclined running surface 54, 55 set at an acute angle to the direction of movement of the slotted guide.
  • a suitably shaped uncoupling key 56 (FIGS. 2 and S) strikes against the running surface 55 and lifts the pivotable lever 43 out of its position of engagement with the slotted guide.
  • the slide block 34 then remains stationary while the slotted guide 35 can be entrained for further movement by the pin 41 as it travels around the sprocket wheel 32.
  • a corresponding peg-shaped key or abutment 57 (FIG. 2) is provided above the sprocket wheel 31 to strike against the running surface 54 so that at this end position of the slide block, and of the carriage, an uncoupling occurs by pivotal movement of the lever 42 against the force of the spring 48.
  • Two further pins 58 and 59 are also arranged on the chain 30 besides the above-mentioned pin 41.
  • the pin project into the path of movement of the pin 59.
  • These switches 62 and 63 serve to switch into circuit the copy sheet charging device 9 (by switch 63) and the scanning light source 158 (by switch 62). Switching of these components out of circuit is effected by an abutment on the slotted guide 35 and by means of a rod 65 which projects as far as the extreme position of movement of the slotted guide 35 at the sprocket wheel 31.
  • the abutment on the slotted guide' is indicated at 66 and engages an arucate end piece 67 of the rod 65, the rod being directly linked to the switches 62 and 63.
  • FIG. 6 is shown the driving disc 33 as well as a shaft 69 on which it is mounted and which acts as a control shaft.
  • This shaft 69 is guided for free rotational movement through an assembly of two wheels comprising the sprocket wheel 32 and a gear wheel 70 connected to the sprocket wheel 32 for fixed rotation therewith.
  • FIG. 2 can be seen-a drive chain 71 which is driven from a gear wheel 72 with which is associated, inside the support panels 1 and 2, the drive motor 68 (FIg. 1).
  • This drive chain 71 drives one roller of each of the roller pairs 6, 7 and 8 through respective gear wheels 73, 74 and 75.
  • gear connections are provided, one gear wheel 76, 77, 78 of each connection being visible in FIG. 4.
  • the feed roller 13 is driven by means of a chaingearwheel combination 76, and the feed roller 14 is driven by means of a gearwheel 161. Subsequent transport rollers such as 16 are connected by a transmission linkage with others of the rollers which are rotated in the same sense.
  • the copying machine functions with only one drive motor, for which the prerequisite is a compressed copy sheet guide path which includes only one change of direction, with additionally the control movements being effected by this drive motor, admittedly with the carriage stationary.
  • the control shaft 69 extends through the two side support panels 1 and 2.
  • the control shaft is driven by the driving disc 33 by means of the earns 60 and 61 on the disc which are entrained by the pins 58 and 41 on the chain 30'.
  • FIG. 2 shows the instant when the slotted guide 35 is uncoupled from the slide block 34. At this moment the pin 58 strikes against the cam 61 and entrains it through 240. After just 120 of this rotation the cam 60 arrives at the lower section of the chain 30 and at a point in time at which the pin 41 arrives at the driving disc 33. This pin 41 then entrains the cam 60 until it reaches its initial position as shown in FIG. 2. An intermediate position is shown in FIG. 8, which also shows the position of the control shaft 69 in this intermediate position.
  • FIG. 2 shows the carriage 23 in its initial position. From this it follows that before a movement of the carraige, i.e. before the slotted guide 35 arrives at the position shown in FIG. 5 to pick up the slide block 34 through engagement by the pivotable lever 42, the control shaft 69 undergoes a rotation.
  • control shaft 69 At its end externally of the side support panel 2 the control shaft 69 carries a gearwheel 79 fixed for rotation therewith.
  • This gearwheel 79 which is also shown in FIG. 3, drives a second drive chain 80.
  • This driven chain 80 is guided over a gearwheel 81 on the shaft of the copy sheet withdrawal roller 82 (FIGS. 1 and 4) as well as over a gearwheel 83 which in a manner synchronised'with the working cycle drives an adjustable supplementary developing device which is shown only schematically at 84.
  • Idler wheels 85 and 86 are provided in the track of the two drive chains 71 and 80.
  • the blade 87 and particularly the bent lower section 91 thereof, has recesses 95 and 96 at its lower edge which fit around the roller discs 93 and 94 so that the bent blade section 91 is arranged directly above the nip of the rollers of the roller pair 6 when the blade is pivoted inwardly of the machine.
  • the pivotally suspended blade 87 is connected to a slide 98 by means of a rod 97 and pivotable intermediate members, and the slide 98 is provided with a slot 99 which receives the control shaft 69.
  • the slide is mounted without the capacity for pivotal movement in the direction shown in FIG. 7 on an intermediate support panel 100 bymeans of a pin 101.
  • the slide 98 is acted upon by a spring 102 which at its other end at 103 is secured to the intermediate support panel 100.
  • a cam follower 104 is provided on the slide 98 in the form of a pin extending perpendicular to the slide, the cam follower 104 cooperating with a cam 105 which is secured for rotational movement on the control shaft 69 and which has a spiral profile over a considerable proportion of its circumference.
  • the notch 106 serves additionally for resilient locking of the control shaft 69 in a defined initial position.
  • the cam surface 107 moves the slide 98 to the left, as viewed in FIG. 7, with the result that the bent lower section 91 of the blade 87 is brought in front of the nip of the roller pair 6.
  • the copy sheet withdrawal roller 82 which performs a number of revolutions dependent upon the transmission between the sprocket wheels 79 and 81, feeds a copy sheet to the bent lower section 91 of the blade 87.
  • FIG. 3 it can be seen that in front of the side support panel 2 there is arranged a setting disc 109 which is also shown in FIG. 6.
  • the setting disc 109 consists of a wheel provided with teeth around its periphcry and which acts as a setting wheel for a multiple copy mechanism.
  • This multiple copy mechanism is shown in FIG. 6 and also in FIG. 9.
  • This toothing which is shown in FIG. 9 at 112, is interrupted at one region 113.
  • a cam 114 mounted on the control shaft 69 engages with this toothing 112 and moves the gearwheel 111, upon each revolution of the control shaft 69, by one tooth on the setting disc 109.
  • the break 113 in the toothing 112 is at a position which is associated with the number 1 on the setting disc 109. This number indicates to the operator that only one copy is to be produced, and in this position the cam 114 can rotate without engagement with the teeth 112.
  • a locating pin 117 on a trip lever 118 is removably engageable.
  • This trip lever 118 is pivotably mounted on a pivot pin 119 in the support panel 2 and is also mounted in such a way that it is to a certain extent tiltable laterally, which as shown in FIG. 6 is achieved by enlarged side pieces of the pin 119.
  • This trip lever 118 is stressed in one direction by the spring 120 secured at one end to the lever and at the other end to the intermediate support panel 100, in such a manner that the pin 117 is drawn resiliently against the toothed wheel 111 and against the locking depressions 115, 116, etc.
  • the toothed wheel 111 can be rotated ratchet-wise relative to the locating pin 117 in order to set a required number of copies to be made from a single original.
  • the trip lever 118 co-operates with an actuating lever 121 of the copying master switch 122 which is also shown in FIG. 3.
  • the actuating lever 121 also operates a switch 123 in the electrical circuit of the drive motor 68 (see also FIG. 13).
  • the actuating lcvcr 121 is moved downwards until a lug 127 on the trip lever 118 snaps over the upper surface of a lug 127 of the actuating lever, under the action of the spring 120.
  • the trip lever 118 again with reference to FIG. 6, is pivoted to the left so far that an extension stop 128 thereof is moved laterally out of the path of movement of the carriage 23.
  • the spring 120 can pull the extension stop 128 into this position towards the side wall of the carriage so that the extension stop after movement of the carriage from its basic position is then drawn back to the right into the path of movement of the carriage if only one copy is to be made.
  • the carriage 23 breaks the switch 123 after the complete ending of its back and forth movement since the trip lever 118 swings upwardly with reference to FIG. 6.
  • the locating pin 117 lies in the flatter depressions 115, 116, against the force of the spring 120 in such a laterally pivoted position that the extension stop 128 is not reached by the carriage 23, so that the switch 123 remains closed to initiate a new working cycle in the manner described above, since the carriage travels past the extension stop 128.
  • the sprocket wheel 31 is formed as an idler wheel and is arranged on a pivotable lever 130 which has a force exerted thereon by a spring 129.
  • the movement of the chain 30 could also be utilized for the uncoupling at the other end of the stroke of the carriage.
  • the short-term standstill of the carriage at the said other end of its stroke has the advantage that the carriage remains with its one edge above the scanning aperture until the scanning light source is switched off and. thus covers the scanning aperture so that the operator isnot troubled by light emitted from the machine. It can be seen from FIG. 1 that the cassette 4 is inserted into the pocket 5 with a stack of copy sheets therein.
  • the cassette is open at its front wall facing towards the withdrawal roller 82 and also similarly at its rear wall where at least one, and preferably two, counterpressure rollers 131 press against the leading or lower part of the stack in order A the spring 136 being such that it endeavours to pull the roller 131 into the pocket 5 for the cassette.
  • a hollow shaft 138 is rotatably mounted on this further rod 137 and a setting lever 139 is secured at about the centre of the hollow shaft 138 for fixed rotation therewith.
  • the setting lever 139 projects into the cassette pocket 5 in its free position so that it can be pressed downwardly by the insertion of a cassette.
  • the hollow shaft 138 is of square shape at its two ends 140 in the immediate vicinity of the slides 132. At each shaft end one half 141 of a unidirectional wedge clutch is mounted on the square end 140 so as to be axially movable but not rotatably movable relative to the shaft.
  • the other half 142 of the clutch carries a restoring star member 143 which has pick-up pegs 144, 145, 146 and 147 on its respective star arms and extending parallel to its axis of rotation.
  • the clutch half 142 is rotatable in one direction about the rod 137. It carries on its hub, at its left-hand side as viewed in FIG. 11, a projection with four gradually sloping teeth which fall away steeply on the toothed side in the counter-clockwise sense. Two of these teeth are shown in FIG. 10 at 148 and 149.
  • a resilient locating pin 150 engages in the teeth and is secured to a ring 151 arranged for fixed rotation with the rod 137. This locating pin 150 prevents a rotation of the restoring star member 143 in counterclockwise sense with reference to FIG. 10. The only possible direction of rotation is that indicated by the arrow 152.
  • the two halves 141 and 142 of the clutch are urged together resiliently by a spring 153 which is seated at one end on the setting lever 139 and the other end on the axially displaceable half 141 of the clutch.
  • a lug 155 is provided on the setting lever 139 to provide a connecting piece for the securement of one end of a tesnion spring 156 which is secured at its other end to the rod 134.
  • the spring 156 pulls the setting lever 139 into its basic position as shown in FIG. 12, its movement being in a counter-clockwise direction.
  • the hollow shaft 138 and also the half 141 of the clutch are entrained and the clutch half 141 cna rotate
US351288A 1972-04-20 1973-04-16 Carriage and coupling arrangement for a document copying machine Expired - Lifetime US3918805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/449,021 US3933349A (en) 1972-04-20 1974-03-07 Document copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2219307A DE2219307C3 (de) 1972-04-20 1972-04-20 Vorrichtung zum Herstellen von Kopien mit einem hin- und herbeweglichen Wagen für die Vorlage

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/449,021 Division US3933349A (en) 1972-04-20 1974-03-07 Document copying machine

Publications (1)

Publication Number Publication Date
US3918805A true US3918805A (en) 1975-11-11

Family

ID=5842676

Family Applications (1)

Application Number Title Priority Date Filing Date
US351288A Expired - Lifetime US3918805A (en) 1972-04-20 1973-04-16 Carriage and coupling arrangement for a document copying machine

Country Status (8)

Country Link
US (1) US3918805A (de)
JP (2) JPS5330500B2 (de)
BE (1) BE798140A (de)
CH (1) CH552842A (de)
DE (1) DE2219307C3 (de)
FR (1) FR2181306A5 (de)
GB (1) GB1430155A (de)
IT (1) IT983990B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2338510A1 (fr) * 1976-01-19 1977-08-12 Rex Rotary International As Dispositif d'entrainement de chariot d'exposition pour machine a copier les documents
US4118117A (en) * 1975-04-15 1978-10-03 Ricoh Company, Ltd. Electrophotographic optical scanning system
US4345834A (en) * 1978-11-02 1982-08-24 Mita Industrial Company Limited Transfer type electrostatic copying apparatus
US4384784A (en) * 1980-10-20 1983-05-24 Ricoh Company, Ltd. Electrophotographic copying apparatus and subsystems therefor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259008A (en) * 1978-04-14 1981-03-31 Mita Industrial Company, Ltd. Electrostatic copying apparatus
JPS58195659A (ja) * 1982-05-10 1983-11-14 小川　隆一 壁紙の貼着方法
JPH0769575B2 (ja) * 1988-05-31 1995-07-31 シャープ株式会社 回転速度設定方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697165A (en) * 1970-12-09 1972-10-10 Pitney Bowes Inc Reciprocating document carriage for photocopier
US3704944A (en) * 1966-12-10 1972-12-05 Canon Co Ltd Kk Copying device having a slit-exposure system
US3756711A (en) * 1971-02-01 1973-09-04 W Limberger Counter for working cycles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB853169A (en) * 1957-12-19 1960-11-02 Caribonum Ltd Improvements in or relating to electro-photographic copying apparatus
US3362323A (en) * 1966-08-08 1968-01-09 Matsushita Electric Ind Co Ltd Manufacturing apparatus of flat type film resistors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3704944A (en) * 1966-12-10 1972-12-05 Canon Co Ltd Kk Copying device having a slit-exposure system
US3697165A (en) * 1970-12-09 1972-10-10 Pitney Bowes Inc Reciprocating document carriage for photocopier
US3756711A (en) * 1971-02-01 1973-09-04 W Limberger Counter for working cycles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118117A (en) * 1975-04-15 1978-10-03 Ricoh Company, Ltd. Electrophotographic optical scanning system
FR2338510A1 (fr) * 1976-01-19 1977-08-12 Rex Rotary International As Dispositif d'entrainement de chariot d'exposition pour machine a copier les documents
US4345834A (en) * 1978-11-02 1982-08-24 Mita Industrial Company Limited Transfer type electrostatic copying apparatus
US4384784A (en) * 1980-10-20 1983-05-24 Ricoh Company, Ltd. Electrophotographic copying apparatus and subsystems therefor

Also Published As

Publication number Publication date
DE2219307C3 (de) 1979-01-18
DE2219307B2 (de) 1978-04-27
GB1430155A (en) 1976-03-31
JPS5330499B2 (de) 1978-08-28
DE2219307A1 (de) 1973-10-25
CH552842A (de) 1974-08-15
BE798140A (fr) 1973-07-31
FR2181306A5 (de) 1973-11-30
JPS4962140A (de) 1974-06-17
JPS5330500B2 (de) 1978-08-28
IT983990B (it) 1974-11-11
JPS4928346A (de) 1974-03-13

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