US3730622A - Microfilm viewer-printer - Google Patents

Microfilm viewer-printer Download PDF

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Publication number
US3730622A
US3730622A US00146114A US3730622DA US3730622A US 3730622 A US3730622 A US 3730622A US 00146114 A US00146114 A US 00146114A US 3730622D A US3730622D A US 3730622DA US 3730622 A US3730622 A US 3730622A
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Prior art keywords
copy paper
driven
paper
operating
image
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US00146114A
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English (en)
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L Freeman
F Arnold
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Micro Information Systems Inc
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Micro Information Systems Inc
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    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading
    • G03B21/118—Reader-printers
    • 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
    • G03G15/26—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 the charge pattern is obtained by projection of the entire image, i.e. whole-frame projection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18152—Belt or chain carried member

Definitions

  • a chain is provided which is driven by the motors sprocket wheel.
  • the chain drives other sprocket wheels in the viewer printer to effectuate feeding and delivery of the copy paper.
  • a portion of the chain normally a single chain, is a dual link chain constituting two such chains integrally mounted together.
  • the additional portion drives rollers which feed paper about to be copied.
  • Cams are provided along the chain to throw switches. The placement of the switches along the chain control the machines timing.
  • a lug on the chain engages the mirror to move it from a viewing position to an exposing position and returning to the viewing position.
  • FIG. 6 is a schematic representation of a portion of the mechanism of FIG. 2,
  • microfilm techniques are illustrative of mans recognition of the problem of volume and weight in recording data, whether for transportation or for storage and subsequent retrieval.
  • an apparatus including means for transporting copy paper to an exposure station, means for transporting such copy paper through such exposure station and into an imagedeveloping station, means for projecting an optical image ofsuch film image onto such copy paper in such exposure station, means for applying toner particles to such exposed copy paper in such developing station, means for delivering such copy paper from such developing station and a single driving and synchronizing means for both operating each of the aforementioned means and determining the time of operation of each. Means are also provided for alternately directing such optical image to a viewing screen.
  • FIG. 1 is a front elevation view of a preferred form of the apparatus of the present invention
  • FIG. 7 is a partial section taken on line 7-7 in FIG. I
  • FIG. 8 is an elevation view of a detail of a portion of the mechanism shown in FIG. 2.
  • a preferred form of the microfilm viewer printer of the present invention is indicated generally at 10, including a microfiche holder 12 and a screen 14 for viewing the selected portion of the microfiche.
  • An off-on switch 16 is provided for applying a suitable source of power, such as volt alternating current, to the various circuits within the apparatus.
  • a print button 18 is provided to close an electrical switch to convert the operation of the apparatus from the view mode to the print mode, as will be further explained.
  • an exposure control 20 is provided for determining the time duration of the exposure to the photosensitive paper. Further, a focus control is shown at 22, and a mouth 24 or the like is provided to enable delivery of the completed prints.
  • FIG. 2 is a vertical section taken online 2--2 in FIG. 1, showing the driving and synchronizing means which serves, as the means for transmitting the mechanical drive to each of the devices of the apparatus requiring a mechanical input and, as well, as the means for operating a plurality of electrical switches for energizing respective electrical circuits within the apparatus.
  • the means which is employed tooperate the severalrespective elements of the apparatus is alsothe means employed to synchronize the operation of such respective elements.
  • Previous viewer-printers have invariably employedone or more meansfor transmitting a drive motion to the several movable elements of the apparatus while employing separate and distinct other means for ensuring the precise synchronization required in the movements of such elements.
  • Driving and synchronizing link chain 26 engages a plurality of other sprockets shown in FIG. 2, including, in order in the direction of travel of chain 26, an idler sprocket 34, a belt drive sprocket 36, a paper feed sprocket 38 and an idler sprocket 40 coaxially mounted on rotary shaft 42 in side-by-side relationship with an identical sprocket 44 thereon, as may be seen more clearly in FIG. 5. More particularly, sprocket 44 is secured to shaft 42 to drive the latter (as will be further explained), whereas chain 26 engages idler sprocket 40 which is free to rotate upon shaft 42.
  • Chain 26 is, for the most part, a single chain engaging the aforementioned series of sprockets (excluding sprocket 44) which lie in a common plane.
  • chain 26 is a dual link chain constituting two such chains integrally mounted together in side-by-side relationship, as is shown in FIG. 5, with secondary chain 27 adjacent and integral with chain 26.
  • the dual portion of chain 26 extends from main drive sprocket 28 over sprockets 34, 36 and 38 to sprocket 44, as indicated schematically in FIG. 2 by the relatively heavy dash-dot phantom line, and somewhat more clearly in the schematic representation of FIG. 6.
  • the dual or secondary chain is mounted on main chain 26 on the near side as viewed in FIG.
  • Endless link chain 26 carries a plurality of cam members thereon for actuating a corresponding plurality of electrical switches which govern the operation of the electrical components of the apparatus; Since these cams are all carried by the same chain and yet are designed to operate only their respective switches (and not actuate any of the other of the plurality of switches positioned along the path of the chain), it will be appreciated by those skilled in the art that the several cams are not only mounted in predetermined positions along the length of the chain corresponding to the desired time of operation of the several respective switches, but at respective positions transversely of the width of the chain corresponding to the position of the operating member or feeler of the respective microswitch to be actuated thereby.
  • the cam members may be mounted not only at the left and right sides of the chain, but at extended outboard positions on either side; further, the cam members, if desired, may be made of different heights so as to selectively operate microswitches correspondingly positioned.
  • a lightstop switch 58 is mounted as shown so as to be operated by cam member 60 on-chain 26.
  • a corona switch 62 is mounted adjacent drive sprocket 28 and is actuated by cam members 64 and 66.
  • corona switch 62 is a bistable switch which is switched alternately from its on to of positions by successive operations of the actuating member, whereas the remaining switches shown in FIG. 2 are actuated from their normal positions only during the time that a cam member on chain 26 is in contact with the actuating member of the switch.
  • corona switch 62 is the only switch having both an on and an off" cam, cam 64 constituting the corona on cam and cam 66 constituting the corona of cam, as will be further explained. Suffice it to say at this point that depression of the operating member of corona switch 62 by cam 64 energizes a corona lamp for electrically charging copy paper in the apparatus, the corona being energized from the time of contact of cam 64 with the operating member of corona switch 62 until corona off" cam 66 passes sprockets 52, 54 and 56 and comes in contact.
  • a cutter switch 65 is operated by cam 70 to energize a solenoid operated cutting mechanism for sequentially severing copy paper advanced through the machine so as to supply separate copy paper sheets from a roll supply.
  • a registry switch 72 is positioned so as to be operated by cam 74.
  • the function of the registry I switch is to interrupt the transport of the copy paper sheet when the latter is in an exposure position, so that the sheet'may be held stationary during the time of exposure;
  • Endless link chain 26 also carries a further operating member in the form of lug 76 which, in the preferred embodiment shown, extends laterally from chain 26 in a direction away from the observer in FIG. 2. That is to say, lug 76 constitutes a projection on chain 26 extending toward the body of the apparatus so as to be in a position to engage a flange 78 on an arm 80 which is mounted for rotation about a fixed pivot point 82 as lug 76 travels along the upper pass of chain 26. Correspondingly, as lug 76 travels back toward the left in FIG. 2 along the lower pass of chain 26, the lug engages a second flange 84 on pivotal arm 80.
  • lug 76 constitutes a projection on chain 26 extending toward the body of the apparatus so as to be in a position to engage a flange 78 on an arm 80 which is mounted for rotation about a fixed pivot point 82 as lug 76 travels along the upper pass of chain 26.
  • the lug engages a second flange
  • Pivotal arm 80 is the operating member for moving a combined shutter and mirror assembly between two extreme positions, viz., a first position in which the shutter-mirror assembly 86 (shown in dotted lines in FIG. 2) is positioned to reflect the optical image of the apparatus toward the viewing screen 14 (constituting the viewing mode), and a second position in which the shutter-mirror assembly 86 is superimposed over the rear face of viewing screen 14 so as to cooperate with the frame members around the viewing screen to form a substantially light-tight seal to prevent the transmission of ambient light through the screen and into the apparatus during the print mode.
  • a first position in which the shutter-mirror assembly 86 (shown in dotted lines in FIG. 2) is positioned to reflect the optical image of the apparatus toward the viewing screen 14 (constituting the viewing mode)
  • a second position in which the shutter-mirror assembly 86 is superimposed over the rear face of viewing screen 14 so as to cooperate with the frame members around the viewing screen to form a substantially light-tight seal to prevent the
  • the lower end thereof is formed into a fork 88 which straddles a fixed guide rod 90; as the pivotal arm 80 swings in each direction, the lower end thereof is maintained in the desired alignment by means of the engagement of the fork 88 with the fixed guide rod 90.
  • FIGS. 2 and 3 The operation of the combined shutter-mirror assembly 86 will better be understood in connection with a description of FIGS. 2 and 3 together, in which figures the shutter-mirror assembly is shown in its two extreme positions of travel. More specifically, the positioning of the operation arm 80 in FIG. 2 is such that the shutter-mirror assembly 86 is in a position corresponding to the view mode, whereas in FIG. 3 the pivotal operating arm 80 is in its extreme counter clockwise position, placing the shutter-mirror assembly 86 adjacent the viewing screen 14 for operation of the apparatus in the print mode.
  • Two linkages 92 and 94 are connected together by a mutual pivot 96, with the upper end of linkage 94 being pivotally connected to the shutter-mirror assembly 86 at 98.
  • linkage 92 is also pivotally connected to the shutter-mirror assembly 86, but by means of a sliding pivot 100 adapted to slide along a slot 102 in the shutter-mirror assembly 86.
  • the upper end of linkage 92 is pivotally mounted for movement about fixed pivot 82, the linkage 92 and pivotal arm 80 being integrally connected together for common movement. That is to say, the angular relationship between linkage 92 and pivotal arm 80 is fixed, and as the latter swings from one position to the other, the former executes a similar angular movement.
  • the lower extremity of linkage 94 is pivotally connected at 104 to the free end of a linkage 106 which is mounted for pivotal movement about a fixed pivot point 108.
  • the two linkages 92 and 94 move relative to each other as the shutter-mirror assembly 86 moves toward the viewing screen 14, resulting in an increasing angle between the two linkages 92 and 94 until the position shown in FIG. 3 is reached.
  • the pivotal arm is carried back to its extreme clockwise position, the assembly 86 and the several linkages connected thereto execute movement in the reverse directions, returning the assembly to the position shown in FIG. 2.
  • FIG. 7 shows cam 60 mounted on chain 26 and in position with respect to switch 58 for operating the latter. Also shown therein, in phantom lines, are cams 64, 66, 70 and 74, along with switches 62, 65 and 72. Likewise in phantom'is the showing of lug 76. While these several elements are not actually seen in the section represented by FIG. 7, this collection of phantom views illustrates, in one preferred embodiment, the manner of relative location of this series of elements, whereby each of the cams is able to actuate its associated switch respectively.
  • An electrical lamp constitutes a source of light which is directed by suitable optical means 112 through a microfilm carried in the carrier assembly 12.
  • the light image thus formed passes through a suitable lens 114 and up along the path indicated to be reflected downwardly and to the left by a fixed mirror 116.
  • the shutter-mirror assembly 86 With the shutter-mirror assembly 86 in the view mode as shown in FIG. 2, the light reflected from mirror 116 is reflected by the mirror 118 to the viewing screen 14. With the shutter-mirror assembly 86 in the position corresponding to the print mode, as shown in FIG. 3, light reflected by planar mirror 116 is directed to an exposure station which will now be described.
  • an exposure station is indicated generally at 120, including an endless transport belt 122 which is supported and driven by belt drive rollers 124 and 126 mounted on respective shafts 128 and 130 upon which are also mounted, respectively, drive sprockets 36 and 56.
  • the transport belt 122 is porous, and while this condition may be achieved by the utilization of a porous material for the belt, in the preferred embodiment of the apparatus of this invention, belt 122 is a plastic belt with a plurality of perforations therein.
  • a housing 132 Positioned between the two passes of transport belt 122 is a housing 132 which has an upper face in the form of a grill work of any suitable design.
  • An electrical motor 134 is connected to and drives a suction fan 136 which,
  • Photographically sensitive copy paper is stored in roll form in the apparatus of the present invention by means of a light-tight cassette or suitable housing 140 from which the copy paper 142 emerges at a suitable aperture 144 as the paper is paid off the reel 146.
  • the copy paper 142 passes over roller 148 and down to a pair of pinch rolls 150 and 152 mounted upon respective shafts 42 and 156.
  • a cutter mechanism including a stationary blade 158 and a movable blade 160, the latter being operated to cut the copy paper 142 in cooperation with stationary blade 158 when operated by a suitable solenoid mechanism shown at 162.
  • the copy paper 142 passes the cutting blades 158 and 160, it passes between pinch rolls 164 and 166 mounted, respectively, on shafts 168 and 170. From the paper-feeding pinch rolls 164 and 166, the severed sheets of copy paper pass through a corona discharge housing 172 in which a-suitable electrical charge is placed upon the copy paper. Thereafter, the paper passes under idler roller 174 mounted for rotation on shaft 176, whereupon the copy paper is placed upon the transport belt 122 and held thereon by the partial vacuum in housing 132.
  • the transport of the severed sheet of copy paper is interrupted when it is in an exposure position on the upper surface of belt 122, and the optical projection means is then operated to expose the pre-charged copy paper to the optical image for a predetermined duration. Thereafter, the transport of the severed sheet of copy paper is resumed, with such sheet passing from the transport belt 122 as it passes under idler roller 178 which is mounted on shaft 180.
  • pan 184 The dimensions of pan 184 are sufficiently great to receive the liquid toner thus sprayed onto the upper surface of the copy paper sheet as it flows across the sheet and off the edge thereof. It is important here to note that the sheet of copy paper resting upon the arcuate edges of guide members 186 is positioned above the level of liquid in tank 184, and the copy paper is thus wet by the liquid toner only on its upper surface, permitting a satisfactory drying thereof by the squeegee action of the pinch rollers 188 and 190, without requiring the use of heat or other means for drying as have been common in the devices of the prior art.
  • Such developing station 182 includes a reservoir 184 having a plurality of parallel, spaced-apart guide members 186 the upper edge of each of which is arcuate as shown so as to constitute together a guide means for the copy paper that is cupped upwardly and adapted to receive the exposed copy paper substantially tangentially from the transport belt 122 and to deliver thedeveloped paper to the pinch rolls 188 and 190 mounted, respectively, on shafts 192 and 194.
  • Pinch rolls 188 and 190 serve to remove liquid from the paper passing therebetween by means of squeegee action, prior to delivering the copy paper through aperture 24.
  • tubular conduit 196 Positioned above the arcuate or upwardly-cupped guiding means formed by the upper edges of the plurality of parallel spaced guide members 186 is a tubular conduit 196 positioned transversely of the direction of movement of the copy paper through the developing station 182.
  • Tubular conduit 196 includes a plurality of apertures or spray orifices along its underside to spray liquid under pressure within conduit 96 upon the copy paper resting upon the upperedges of guide members 186.
  • a pump 198 is mounted below and driven by electrical motor 134, and a suitable conduit 200 is provided by means of which liquid toner in pan 184 may flow into pump 198.
  • the liquid toner coming from pump 198 is applied to two similar conduits 202 and 204 which are connected to the opposite ends of tubular spray member 196.
  • the liquid toner enters the tubular spray head from both ends and at approximately the same pressure, resulting in a substantially uniform flow of the liquid toner through the several spray orifices along the length of the spray
  • the exhaust of the suction fan 136 is transmitted by means of a housing or conduit 206 to the electrical projection lamp 110, providing means for cooling the latter.
  • FIG. 4 shows the electrical circuit for the preferred embodiment of the apparatus of the present invention, including input terminals 208 and 210 to which may be applied a source of volt alternating current for energizing the entire apparatus.
  • a fuse 212 may be provided, if desired, and as will be seen in FIG. 4, the closing of off-on switch 16 immediately energizes pump motor 134 and light 110, through light-stop switch 58, with the several switches in their normal or ready positions as shown. That is to say, the normal or ready condition of the apparatus is to provide the viewing mode upon closing of off-on switch' 16.
  • pump motor 134 also is energized upon the closing of off-on switch 16, thus ensuring a continued flow of liquid toner and an increased degree of mixing of the particles therein.
  • the film holder 12 of the preferred embodiment of the present invention includes an upper stationary support bracket 13 having end flanges (as seen in FIG. 3) which are turned downwardly as shown.
  • a central support member 15 has an upper pair of edge flanges contiguous and cooperating with the flanges of bracket 13, whereby the intermediate support member 15 may slide along bracket 13 to the left and to the right in FIG. 1.
  • intermediate support member 15 has a pair of downwardly-turned edge flanges in orthogonal relationship with respect to the upwardlytumed flanges thereon.
  • Cooperating with these latter downwardly-turned flanges is a pair of upwardly-turned flanges on a film tray 17, whereby the latter may slide along intermediate support 15 to the left and to the right in FIG. 3.
  • the film tray 17 is mounted for movement toward and away from the operator, as well as to the left and right of the operator,.so as to permit the selection of a desired image portion of the film held, as is common, between two pieces of glass in film tray 17.
  • FIGS. 2 and 4 the view mode, in which a suitable microfiche or the like is held within film carrier 12 so as to be positioned in the light beam from lamp 110 and projected upwardly by optical means 112.
  • a suitable microfiche or the like is held within film carrier 12 so as to be positioned in the light beam from lamp 110 and projected upwardly by optical means 112.
  • closing the off-on switch 16 energizes projection lamp 110, and the image of the film in carrier 12 is thus projected upwardly to planar mirror 116, downwardly and to the left to planar mirror 118 and then to the viewing screen 14.
  • doublepole double throw switch 218 is positioned in either of its two conditions to apply the direct current output of the corona power supply 220 to corona lamps 171 and 173 in either d-c voltage as desired.
  • corona element 171 may, for example, be at approximately a negative 6,000 volts d-c with .respect to chassis ground while corona element 173 is at approximately 6,000 volts d-c positive with respect to chassis ground, or vice versa, depending upon the position of switch 218, as it is desired to place a negative or positive charge on a face of the paper.
  • the copy paper 142 thus passes between pinch rolls 164 and 166 and enters the corona housing 172, wherein an electric charge of suitable polarity is applied to copy paper 142 by means of respective opposite corona elements 171 and 173.
  • Suitably charged copy paper 142 next is fed between transport belt 122 and roller 174.
  • the upper pass of transport belt 122 moves downwardly as a result of the rotation of rollers 124 and 126 corresponding to the rotation of respective shafts 128 and 130, the latter being driven by respective sprockets 36 and 56 in engagement with link chain 26.
  • cam on chain 26 arrives at cutter switch 65, closing the latter and operating cutter solenoid 162, resulting in horizontal movement of movable cutter blade 160 into a sheet of copy paper.
  • registry cam 74 on chain 26 operates registry switch 72, interrupting the circuit energizing drive motor 30 and bringing the paper transport to a halt.
  • light-stop switch 58 still in its left-hand position (FIG. 4)
  • registry switch 72 now also in its left-hand position
  • an energizing circuit for projection lamp is now established-through the right-hand element of lightstop switch 58 and registry switch 72.
  • timer motor 216 becomes energized'at this moment, and the exposure of the charged sheet of copy paper in exposure station proceeds for a period of time determined by the pre-set time of operation of timer motor 216, as determined by knob 20 shown in FIG. 1.
  • timer motor 216 closes timer switch 214, bypassing registry switch 72 in establishing an energizing circuit for guide motor 30 through the left-hand component of light-stop switch 58 and timer switch 214. Accordingly, guide motor 30 again is energized, and link chain 26 resumes its motion. The resumption of this motion removes resevered and appropriately charged sheet of copypaper to reach a' gistry cam 74 from the operating member of registry switch 72, and the latter returns to its initial position.
  • the lug 76 on chain 26 engages flange 78 on pivotal arm 80 to carry the latter to its extreme counter clockwise position, placing the shutter-mirror assembly 86 in its shutter position behind viewing screen 14, preventing ambient light outside the viewing screen from entering the cabinet and fogging or preventing the exposure.
  • lug 76 returns to the left (FIG. 2) on the lower pass of chain 26, engaging flange 84 on pivotal arm 80, carrying the latter back to its initial or extreme clockwise position.
  • the sheet of paper with the latent image therein is fed from transport belt 122 into developing station 182 along the upwardly-cupped arcuate path previously described as being provided by the upper edges of a plurality of parallel spaced-apart guide members 186. Movement of the sheet of copy paper through developing station 182 is continuous, and as the leading edge of the paper passes under the spray of liquid toner provided by spray head 196, the upper surface of the copy paper sheet is uniformly subjected to a shower of liquid toner, the latter flowing from the top of the sheet of copy paper over the edges thereof and falling into reservoir or tank 184 for recirculation.
  • each of the mechanical operating members has returned to its original or ready position, and, finally, cam 60 on chain 26 again reaches its initial position in contact with the operating member of light-stop switch 58, returning that switch to its initial condition as shown in FIG. 4, disabling the drive motor 30 and reenergizing projection lamp 110, thus leaving the apparatus in its initial or viewing mode.
  • An apparatus for copying film images comprising means when driven for transporting copy paper to an exposure station,
  • a single driving and synchronizing means for both driving each of said preceding means and determining the time of operation of each.
  • An apparatus for copying film images in accordance with claim 1, wherein said means for transporting such copy paper through such exposure station and into such developing station includes an'endless belt conveying means at such exposure station for transporting such copy paper through an exposure position therein.
  • a reflecting surface on said shutter member for reflecting light from said projecting means toward said viewing screen when said shutter member is so positioned in such optical path.
  • said means for applying toner particles to such exposed copy paper in such developing station includes means forming a reservoir for liquid toner
  • said spray-directing means comprises a tubular member positioned above said paper-guiding means transversely of the direction of paper movement, said tubular member having a series of spray holes along its length, and tubular conduit members connecting said pumping means to both ends of said tubular spray member to apply the liquid toner substantially equally to both ends of said tubular spray member.
  • said single driving and synchronizing means includes an electrical drive motor having a rotary output shaft with a drive sprocket mounted thereon,
  • each of said transporting and delivering means having at least one rotary driving shaft with a sprocket mounted thereon,
  • each of said optical" projecting and toner applying means having electrical operating circuits controlled by electrical switches
  • An apparatus for copying film images in accordance with claim 15, wherein said means for projecting such optical image onto such copy paper in such exposure station includes an electrical lamp for producing light, and including means for. directing the exhaust from said vacuum-creating means over such electrical lamp to cool the same.
  • an electrical drive motor having a rotary output shaft with a drive sprocket mounted thereon
  • each of said transporting and delivering means having at least one rotary driving shaft with a sprocket mounted thereon, 1
  • each of said optical projecting and toner applying means having electrical operating circuits 'controlled by electrical switches, and v Y an endless link chain engaging each of said sprockets and driven by said drive sprocket to effect a mechanical drive of the members connected to the 18.
  • the rotary driving shaft of said second pair of pinch rolls having an idler sprocket and a driving sprocket mounted thereon in side-by-siderelationship, and i said endless link chain constituting in part a dual chain having a second link chain mounted thereon in side-by-side relationship over a predetermined portion of the length thereof, said first-mentioned link chain engaging said idler sprocket and said second link chain intermittently engaging said driving sprocket.
  • an apparatus for electrostatically copying images from an original document medium onto copy paper including a supply of copy paper, image forming means for reproducing the image from the document medium on said copy paper, and conveying means for selectively transporting said copy paper from said supply of copy paper through said image forming means, the improvement comprising:
  • driven member means operatively connected to said conveyor means for selectively causing said conveyor means to move said copy paper through said image forming means as said driven member means is driven;
  • a flexible endless transfer member drivingly connecting said driving member to said driven member means to cause said driven member means to be driven as said driving member is rotated;
  • first switch means for selectively connecting said drive motor to a power source for causing said motor to rotate said driving member
  • control means for selectively controlling the operation of said image forming means
  • first operating member means carried by said transfer member for selectively operating only said first switch means and for causing said first switch means to disconnect said drive motor from the power source when said first operating member means engages said first switch means, said first operating member means located on said transfer member to engage said first switch means when said apparatus completes a cycle whereby said copy paper is supplied from said supply of copy paper through said image forming means to reproduce the image from the original document medium thereon;
  • second operating member means selectively operating only said second switch means carried by said transfer member for causing said second switch means to activate said control means when said transfer member reaches a predetermined position
  • said flexible endless transfer member is an endless link chain
  • said first operating member means is a 'first cam member attached to said chain at a first predetermined position and movable therewith along a first prescribed path
  • said second operating member means is a second cam member attached to said chain at a second predetermined position and movable therewith along a second prescribed path parallel to said first prescribed path displaced from said first prescribed path
  • said first switch means is located so as to be engaged by said first cam member at a predetermined position as it moves along said first prescribed path and so as not to be engaged by said second cam member as it moves along said second prescribed path
  • said second switch means is located so as to be engaged by said second cam member at a predetermined position as it moves along said second prescribed path and so as not to be engaged by said first cam member as it moves along
  • control means includes time delay means for deenergizing said drive motor for a predetermined period of time upon operation of said second switch means by said second operating member and for re-energizing said motor after said predetermined period of time.
  • paper feed means for selectively feeding copy paper from said supply of copy paper toward said image forming means, said paper feed means including a driven member for causing said paper feed means to feed said copy paper as it is rotated;
  • a flexible engaging member mounted on said transfer member and movable therewith in a side-by-side relationship with said transfer member; said engaging member arranged to drivingly engage said drivenmember to operate said paper feed means as said transfer member moves said engaging member over said driven member, said engaging member having a length shorter than said transfer member such that a prescribed length of copy paper is fed toward said image forming means as said engaging member moves over said driven member.
  • said flexible transfer member is an endless link chain and wherein said flexible engaging member is a section of link chain attached to the side of said endless link chain at a predetermined position thereon 24.
  • said conveying means includes paper feed means for selectively feeding copy paper from said supply of copy paper toward said image forming means, and wherein: said driven member means includes a driven member for causing said paper feed means to feed said cop paper as it is rotated; and further including:
  • a flexible engaging member mounted on said transfer member and movable therewith in a side-by-side relationship with said transfer member; said engaging member arranged to drivingly engage said driven member to operate said paper feed means as said transfer means moves said engaging member over said driven member, said engaging member having a length shorter than said transfer member such that a prescribed length of copy paper is fed toward said image forming means as said engaging member moves over said driven member.
  • image projection means for projecting the image from the microfilm into said image forming means to cause the image to be reproduced on said copy P p;
  • projection transfer means for selectively transferring the projected image from said image projection means onto said viewing screen while preventing said projected image from reaching said image forming means when said projection transfer means is in a first position and for allowing said projected image to reach said image forming means when said projection transfer means is in a second position;
  • a single drive motor having a rotary output shaft; a driving member carried by and rotatable with said output shaft;
  • a flexible endless transfer member connected to and moved by said driving member along a prescribed path in a first direction;
  • first driven element operatively connected to said projection transfer means; said first driven element constructed and arranged to be engaged by said driving element to move said projection transfer means from said first position to said second position as said driving element is moved along a firstpredetermined portion of said prescribed path in said first direction by said transfer member and for I releasing said first driving element when said projection transfer means reaches said second position;
  • second driven element operatively connected to said projection transfer means; said second driven element constructed and arranged to be engaged by said driving element to move said projection transfer means from said second position to said first position as said driving element .is moved along a second predetermined portion of said prescribed path in said first direction by said transfer member and for releasing said second driving element when saidprojectiontransfer means reaches said first position.
  • said conveying means includes paper feed means for selectively feeding copy paper from said supply of copy paper toward said image forming means
  • said driven member means includes a driven member for causing said paper feed means to feed said copy paper as it is rotated; and further including:
  • a flexible engaging member mounted on said transfer member and movable therewith in a side-by-side 27.
  • apparatus further includes a supply of copy paper, and conveying means for selectively transporting said copy paper from said supply of copy paper through said image forming means, and further including:
  • driven member means operatively connected to said conveyor means for selectively causing said conveyor means to move said copy paper through said image forming means as said driven member means is driven by said transfer member;
  • first switch means for selectively connecting said drive motor to a power source for causing said motor to rotate said driving member
  • control means for selectively controlling the operation of said image forming means
  • first operating member means carried by said transfer member for selectively operating only said first switch means and for causing said first switch means to disconnect said drive motor from the power source when said first operating member means engages said first switch means, said first operating member means located on said transfer member to engage said first switch means when said apparatus completes a cycle whereby said copy paper is supplied from said supply of copy paper through said image forming means to reproduce the image from the original document medium thereon;
  • a second operating member means Selectively operating only said second switch means carried by said transfer member for causing said second switch means to activate said control means when said transfer member reaches a predetermined position;
  • independent means for initiating said cycle by energizing said motor independently of said first switch means to move said first operating member means out of engagement with said first switch means.
  • said conveying means includes paper feed means for selectively feeding cop'y paper from said supply of copy paper toward said image forming means
  • said driven member means includes a driven member not engaged by said transfer member for causing said paper feed means to feed said copy paper as it is rotated; and further including:
  • a flexible engaging member mounted on said transfer member and movable therewith in a side-by-side relationship with said transfer member; said engaging member arranged to drivingly engage said driven member to operate said paper feed means as said transfer member moves said engaging member over said driven member, said engaging member having a length shorter than said transfer 30.
  • said supply of copy paper includes a roll of copy paper
  • said apparatus further includes cutter means for cutting said copypaper to length as it is fed from said roll by said paper feed means, and further including cutter operating means for causing said cutter means to cut said copy paper when activated; and an operating element carried by said endless link chain and movable therewith, said operating element constructed and arranged to engage and activate only said cutter operating means when said endless chain reaches a predetermined position.
  • said apparatus further includes cutter means for cutting said copy paper to length as it is fed from said roll by said paper feed means, and further including cutter operating means for causing said cutter means to cut said copy paper when activated; and an operating element carried by said endless transfer member and movable therewith, said operating element constructed and arranged to engage and activate only said cutter operating means when said endless transfer member reaches a predetermined position.
  • control means includes time delay means for deenergizing said drive motor for a predetermined period of time upon operation of said second switch means by said second operating member and for re-energizing said motor after said predetermined period of time.
  • said apparatus further includes charging means for electrostatically charging said copy paper
  • said image forming means includes exposure means for projecting the optical image on said microfilm onto said charged copy paper to form an electrostatic latent image thereon, and developing 'means for developing said electrostatic latent image on said copy paper into a visual image.
  • said charging means includes charging control means for causing said charging means to charge said paper when actuated, and further including a first trigger member mounted on said endless link chain at a predetermined position thereon, movable therewith, and engaging only said charging control means to actuate same; and a second trigger member mounted on said endless link chain at a predetermined position thereon, movable therewith, and engaging only said charging control means to de-activate same.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US00146114A 1971-05-24 1971-05-24 Microfilm viewer-printer Expired - Lifetime US3730622A (en)

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Application Number Priority Date Filing Date Title
US14611471A 1971-05-24 1971-05-24

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US (1) US3730622A (it)
BE (1) BE783069A (it)
CA (1) CA971619A (it)
DE (1) DE2225982A1 (it)
FR (1) FR2138765B1 (it)
GB (1) GB1388033A (it)
IL (1) IL39450A0 (it)
IT (1) IT952761B (it)
NL (1) NL7206964A (it)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856397A (en) * 1972-07-19 1974-12-24 Minolta Camera Kk Viewing and electrostatic copying machine
US3981581A (en) * 1972-11-07 1976-09-21 Freeman Lawrence M Drive system for shifting a mirror assembly
US4054379A (en) * 1974-09-28 1977-10-18 Canon Kabushiki Kaisha Reader-printer
US4161359A (en) * 1976-12-17 1979-07-17 Xerox Corporation Apparatus for synchronizing movement between an optical scanning system and an imaging member
US4325626A (en) * 1978-12-13 1982-04-20 Mita Industrial Co., Ltd. Electrostatic copying apparatus
US4806982A (en) * 1986-12-15 1989-02-21 Brother Kogyo Kabushiki Kaisha Imaging device
US5153635A (en) * 1991-04-09 1992-10-06 Infographix, Inc. Microfilm viewer/printer projection system
US20130153377A1 (en) * 2010-08-13 2013-06-20 Abb Technology Ag Medium voltage circuit breaker arrangement operated by a transmission mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3165321D1 (en) * 1980-03-05 1984-09-13 Imaging Technology Ltd Reader-printer and method of producing a permanent copy therein

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919170A (en) * 1952-11-14 1959-12-29 Burroughs Corp Means for electrostatically recording signals
FR1256266A (fr) * 1959-04-23 1961-03-17 Josef Mayr Dispositif de transformation d'un mouvement rotatif continu en mouvement de va-et-vient
US3197585A (en) * 1962-08-31 1965-07-27 Gen Electric Endless roller chain movement determining apparatus with switch actuating means
US3451754A (en) * 1966-12-19 1969-06-24 Nashua Corp Synchronous paper feeding mechanism
DE1522658A1 (de) * 1967-01-11 1969-10-16 Lumoprint Zindler Kg Steuervorrichtung fuer ein Kopiergeraet
US3526456A (en) * 1964-11-20 1970-09-01 Old Town Corp Reader-copier serial-numbering device
US3619053A (en) * 1969-09-17 1971-11-09 Xerox Corp Photoelectrophoretic imaging system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919170A (en) * 1952-11-14 1959-12-29 Burroughs Corp Means for electrostatically recording signals
FR1256266A (fr) * 1959-04-23 1961-03-17 Josef Mayr Dispositif de transformation d'un mouvement rotatif continu en mouvement de va-et-vient
US3197585A (en) * 1962-08-31 1965-07-27 Gen Electric Endless roller chain movement determining apparatus with switch actuating means
US3526456A (en) * 1964-11-20 1970-09-01 Old Town Corp Reader-copier serial-numbering device
US3451754A (en) * 1966-12-19 1969-06-24 Nashua Corp Synchronous paper feeding mechanism
DE1522658A1 (de) * 1967-01-11 1969-10-16 Lumoprint Zindler Kg Steuervorrichtung fuer ein Kopiergeraet
US3619053A (en) * 1969-09-17 1971-11-09 Xerox Corp Photoelectrophoretic imaging system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856397A (en) * 1972-07-19 1974-12-24 Minolta Camera Kk Viewing and electrostatic copying machine
US3981581A (en) * 1972-11-07 1976-09-21 Freeman Lawrence M Drive system for shifting a mirror assembly
US4054379A (en) * 1974-09-28 1977-10-18 Canon Kabushiki Kaisha Reader-printer
US4161359A (en) * 1976-12-17 1979-07-17 Xerox Corporation Apparatus for synchronizing movement between an optical scanning system and an imaging member
US4325626A (en) * 1978-12-13 1982-04-20 Mita Industrial Co., Ltd. Electrostatic copying apparatus
US4806982A (en) * 1986-12-15 1989-02-21 Brother Kogyo Kabushiki Kaisha Imaging device
US5153635A (en) * 1991-04-09 1992-10-06 Infographix, Inc. Microfilm viewer/printer projection system
US20130153377A1 (en) * 2010-08-13 2013-06-20 Abb Technology Ag Medium voltage circuit breaker arrangement operated by a transmission mechanism
US9082561B2 (en) * 2010-08-13 2015-07-14 Abb Technology Ag Medium voltage circuit breaker arrangement operated by a transmission mechanism

Also Published As

Publication number Publication date
CA971619A (en) 1975-07-22
NL7206964A (it) 1972-11-28
BE783069A (fr) 1972-09-01
FR2138765A1 (it) 1973-01-05
GB1388033A (en) 1975-03-19
IL39450A0 (en) 1972-07-26
DE2225982A1 (de) 1972-12-07
AU4143872A (en) 1973-10-25
FR2138765B1 (it) 1973-07-13
IT952761B (it) 1973-07-30

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