US3683803A - Master making control for duplicating machine - Google Patents

Master making control for duplicating machine Download PDF

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US3683803A
US3683803A US54719A US3683803DA US3683803A US 3683803 A US3683803 A US 3683803A US 54719 A US54719 A US 54719A US 3683803D A US3683803D A US 3683803DA US 3683803 A US3683803 A US 3683803A
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Prior art keywords
master
counter
printing
count
lithographic
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US54719A
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English (en)
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Donald R Gray
Donald J Miller
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AB Dick Co
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Multigraphics Inc
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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
    • G03G15/228—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 the process involving the formation of a master, e.g. photocopy-printer machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L17/00—Lithographic printing apparatus for office or other commercial purposes
    • B41L17/02—Lithographic printing apparatus for office or other commercial purposes for direct impression printing
    • B41L17/06—Lithographic printing apparatus for office or other commercial purposes for direct impression printing with curved printing surfaces, e.g. cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L39/00—Indicating, counting, warning, control, or safety devices
    • B41L39/16—Programming systems for automatic control of sequence of operations

Definitions

  • the counter is arranged to delay the processing of a master, by [56] References cued preventing feeding of it into a processing path, until UNITED STATES PATENTS the printing time remaining for a previous master approxlmates the time required to transport the delayed 3,426,678 2/1969 Carper et al ..101/450 X master through the processing path to avoid impair 3,203,626 8/1965 Scranton ..235/ 132 E ment of its lithographic and handling i i 3,102,470 9/1963 Cragg 'et al.
  • This invention relates to the production of multiple copies of original documents and more specifically relates to an improved method and apparatus for printing lithographic copies from, preferably, a photoelectrostatic master copy of an original.
  • the invention is particularly directed to an improvement in the apparatus and method disclosed in US. Pat. No. 3,426,678, to R. L. Carper et al.
  • This patent describes a master making and duplicating machine which automatically produces lithographic copies of an original from a photo-imaged master copy.
  • a photosensitive sheet is made into a lithographic master by transporting it through successive stations of a machine wherein it is electrostatically charged, exposed to an image of an original, electrostatically developed, activated by heat and treatment in an acqueous solution and, finally, attached to a lithographic printer.
  • Full advantage of the high copy production rate afforded by the integration of the photo-imaging and lithographic techniques is taken by overlapping master making and printing sequences.
  • a master may be processed concurrently with the printing of copies from a preceding master so that the time required to prepare a master is, in effect, eliminated.
  • the invention provides an apparatus and method of machine control whereby the efficient overlapping of machine cycles as disclosed in the aforementioned patent is maintained but where master preparation is advantageously delayed during long copy runs.
  • master making or processing is triggered when the printing time remaining for a copy run in progress either approximates or is less than the time required to process the next master. This result is achieved by monitoring printing operations through a copy counter of the apparatus. More specifically, only when the number of copies to be printed from a master on the printing cylinder is below a predetermined count, is the next master processed.
  • the copy count at which master processing is initiated is determined by the time required to transport a master through its path in the master making portion of the apparatus in relation to the time required to print each copy. By feeding it at the predetermined count, a second master will be completed and will arrive at the printing cylinder at the proper time to replace the used master. As a result, each master is processed immediately before it is used thereby preventing it from losing moisture picked up during its processing treatment.
  • the apparatus will usually not be employed for long copy runs.
  • the speed and economy of the lithographic process for relatively large numbers of copies is most advantageously carried out by conventional equipment.
  • the automated apparatus of this invention is used for the intermediate copy making size run, which is often long enough to constitute an excessive time delay for a prepared electrostatic master.
  • FIG. 1 is a longitudinal cross-section of apparatus in accordance with the invention, shown in diagrarnatic form.
  • FIG. 2 is a front view of a copy counter in three column or, hundreds form.
  • FIG. 3 is a detailed view of the control elements at one column of the counter.
  • FIG. 4 is a schematic electrical wiring diagram in accordance with this invention.
  • FIG. 1 there is diagramamatically shown a duplicating apparatus 10 including a housing 12 in which there is arranged a master making segment 13 and a lithographic printing segment 16. As described below, a master is processed through a sequence of stations in the master making segment 13 to provide a photoimaged lithographic master copy of an original document and is conveyed to the lithographic printing segment 16 where it is used to print a desired number of copies.
  • a master is processed through a sequence of stations in the master making segment 13 to provide a photoimaged lithographic master copy of an original document and is conveyed to the lithographic printing segment 16 where it is used to print a desired number of copies.
  • Operation of the apparatus 10 is initiated by moving an original document 0 on a horizontal platform 17 of a support or feed-in station 20 into a nip of a pair of rotating feed rolls 21 and 22.
  • the feed rolls 21 and 22 carry the original 0 forward until its lead edge operates an original ready switch 23 near the entrance of an original path or guideway 26 indicating that the original is ready to be copied.
  • the switch 23 disengages a clutch (not shown) operating the feed rolls 21 and 22 to temporarily halt the original 0 at a predetermined waiting point.
  • Photosensitive sheets or masters M are supplied from a stack of individual masters contained in a magazine I assembly indicated generally as 27.
  • a master M receives an image corresponding to that of an original 0 to become a master copy from which lithographic copies may be printed.
  • the masters preferably are conventional photoelectrostatic members comprising a substrate such as paper having coated thereon a somewhat oleophilic photoconductive insulating layer such as zinc oxide particles dispursed in an insulating resin binder.
  • the master M is advanced by the master starting roller 29 along the path 31 into a charging station 33, a conventional corona type unit, to provide the master with a uniform electrostatic charge on its photoconductive upper face.
  • a master detecting switch 34 Before the master M enters the charger 33, its lead edge operates a master detecting switch 34 which in turn energizes the charging station 33 and the above mentioned clutch to rotate the feed rolls 21 and 22 thereby restarting the original along a path 36, defined in part by the guideway 26, in timed relation with the master M.
  • the original 0, driven by rollers 40 and 41, and the master M, driven by rollers 42 through 45, are directed by respective guideways 26 and 49 towards an exposure station 48 and a developing station 50.
  • the charging station 33, the exposure station 48 and the developing station 50 comprise a master imaging portion, designated 46, of the apparatus 0.
  • the lead edges of the original 0 and master M converge at a junction 51 of the guideways 26 and 49.
  • the original 0 is positioned at the feed-in station with its graphic information or image face down so that the image is towards the electrostatically charged light sensitive face of the master M as these sheets contact one another.
  • the master M is exposed to the image of the original 0 by a technique of contact printing at the exposure station 48.
  • Light is transmitted through the graphic original 0 onto the light sensitive master M.
  • the image of the originalO produces a shadow pattern on corresponding areas of the master M so that the master will be differentially discharged to create a latent electrostatic image.
  • the exposure station 48 comprises a transparent cylinder 53 enclosing a coaxial illumination source 54 and a looped conveyor belt 55 mounted on a pair of rollers 56 and 57.
  • a spring loaded roller 58 urges the cylinder 53 into the loop of the conveyor belt 55.
  • the originalO and master M enter between the illuminated cylinder 53 and conveyor belt 55 and are held in intimate contact as they pass over the cylinder to assure that the exposure or discharge pattern on the master M will have sufficient resolution.
  • other techniques and arrangements, including stationary or scanning optical systems may be alternatively employed to expose a master with a suitable image of an original.
  • the master M and original 0 progress through an intermediate guideway 59 to a set of feed rollers 61 and 62 defining a separating station 63 where the original 0 parts from the master M.
  • the original 0 is removed from the master making segment 13 through a guideway 65 by a pair of rollers 66 and 67 while the master M continues in its processing path 31 through a guideway 69 to the developing station 50 of the imaging portion 46.
  • a magnetic brush developer 73 of conventional design applies ink receptive electroscopic resin powder to the exposed and now image on the master is developed by resin particles electrostatically held on the remaining charged areas of the master. It is understood, of course, that other various known methods and apparatus may be used to develop the latent image of the master M.
  • the master M is fed by a series of roller pairs 76, 77; 78, 79; and 80, 81, through an activating portion, indicated generally at 82, that includes, at a fixing station 90, a source of heat 91 which softens the electroscopic resin powder to cause it to suitably adhere to the surface of the master M. From the source of heat 91 which softens the electroscopic resin powder to cause it to suitably adhere to the surface of the master M.
  • the master M advances in the activating portion 82 to a treating station 93 comprising tank 94 containing an aqueous treating solution 95 which is chemically active on the imaged face of the master M to convert the non-image areas, those not protected by adhering resin powder, to a moisture receptive or hydrophilic and a moistened condition.
  • Processing of the master M is completed with the withdrawal of the master from the treating tank 94 by a set of rollers 101 through 104.
  • the master M is next transported to the lithographic printing segment 16 along a path 105, to a stop or ready position where the lead edge of the master operates a master ready switch 111 adjacent to a master cylinder 115.
  • the master M is inserted on the master cylinder 115 of the lithographic printing means 16 when an insertion timing switch 186 (FIG. 4) operated by a cam (not shown) indicates that the rotating master cylinder 1 15 is in a proper angular position.
  • the insertion timing switch 186 energizes a relay 193 (FIG. 4) which, in turn, energizes a solenoid (not shown).to move a pair of rotating insertion rollers 106 and 107 together to advance or insert the master M onto the cylinder 115.
  • the master M is secured to the cylinder 115 by a clamping arrangement such as that described in detail in the aforementioned US. Patent No. 3,426,678.
  • the lithographic printing means 16 also includes a supply source, indicated generally as 131, of a copy medium in the form of receiving sheets R of paper or the like stacked in a magazine tray 132.
  • a supply source indicated generally as 131
  • the master M is attached to the master cylinder 115, the ink and moisture rolls 120 and 122 are rendered operative and the master cylinder 115 rotates through a number of revolutions, determined by a pro-inking counter (not shown), until a sufficient ink image is built on the resin powder image on the master M.
  • a receiving sheet feed solenoid (not shown) is then energized I through the pre-inking counter to feed single receiving lower surface of the master M.
  • the latent electrostatic sheets R from the tray 132 by lowering a rotating feed roller 136 onto the stack.
  • Each receiving sheet R is advanced onto the copy cylinder, designated 116, by a pair of rollers 137 and 138 and is clamped on the copy cylinder in a manner similar to that for clamping the master M on its associated cylinder 115.
  • the receiving sheet R and master M pass through an area of contact between the copy and master cylinders 116 and to transfer an ink image directly from the master M to the receiving sheet R.
  • the receiving sheet or copy R after being unclarnped from the copy cylinder 116, is guided by a blade member 144 and a roller set 146 and 148 into a receiving tray 142 as a finished copy or reproduction.
  • contact print method of exposure provides a reverse reading master image that is suited for direct lithographic printing from the master
  • other well known master exposure methods may be used in combination with an offset lithographic printing arrangement where provisions may be made for cleaning the residual ink image from an offset cylinder after a copy run has been completed.
  • a counter 155 (FIGS. 2, 3 and 4) controls the operation of the apparatus to print, for each original 0 a number of copies selected by an operator.
  • the counter 155 receives signals from a copy count switch 151 as each receiving sheet R is fed from its magazine tray 132.
  • the counter 155 terminates the printing cycle.
  • the counter 155 de-activates the copy feed roller 136, causes the master M to be ejected from the master cylinder 115, and de-activates the ink and moisture trains 120 and 122.
  • the master M is removed from the cylinder 115 with a stripper bar 161 and is fed into a receiving tray 163 by a pair of feed rollers 164 and 165.
  • the counter electrically resets to the previous selected number when a second master is inserted on the master cylinder 115 unless another number is manually selected.
  • the somewhat simplified electrical control circuit diagramatically shown in FIG. 4 controls the feeding of masters M through the master feed solenoid 30, shown at the lower right of the diagram.
  • various relays and the master feed solenoid 30 are energized through associated switches and contacts which control the flow of electrical current between power lines 170 and 171.
  • a first master M is fed into the processing path 31 as soon as a first original 0 operates the ready switch 23 (FIG. 4, line L8).
  • This first master M is conveyed along the processing path 31 until it operates the master ready switch 11 1 (Line L3) and comes to rest in a position ready for insertion on the master cylinder 115.
  • a master delay relay 180 at LA having normally closed contacts MDR at line L8, is provided to control master feeding through the master feed solenoid 30.
  • the master feed solenoid 30 will be energized to feed a master M whenever an original 0 is present at the ready switch 23 and the master delay relay 180 is not energized.
  • the master delay relay 180 is energized to prevent the feeding of a second master M whenever any of three conditions prevail.
  • the conditions are that a preceding master is traveling through the processing path 31 or is at rest at the ready position adjacent the master cylinder 115, that the master M has advanced from the ready position but has failed to insert on the master cylinder 115, or that there is a relatively high number of copies to be printed from the preceding master M.
  • These conditions are represented in the central portion of FIG. 4 at lines 0 L5, and, together, lines [16 and L7 respectively.
  • Switches or contacts at lines L6 and L7 of the copy counter outlined at are connected to hold in the master delay relay through its own contacts MDR once it has been energized.
  • the machine control relay at line L1 prevents the feeding of a second master while a first master is in the processing path 31.
  • the machine control relay 190 energized by the master detecting switch 34 as the first master M is fed from the magazine 27, closes its contacts MCR at line L4 to energize the master delay relay 180 to, in turn, open the latters contacts MDR at line L8 disconnecting the master feed solenoid 30 thereby preventing a second master M from being fed.
  • the machine control relay 190 once energized, is held in along line L2 by normally closed contacts IMR of an insert master relay 193 at line L3 and a pair of its own contacts MCR.
  • the machine control relay 190 remains energized or held in until the insert master relay 193 is energized along line L3 opening its contacts IMR at line L2. This occurs when the first master M has completed its path through the master making segment 13 to the ready position closing the master ready switch 111 and when the master cylinder 115 is in a proper angular position thereby closing the insertion timing switch 186.- Descn'bed in other words, the machine control relay 190 holds up the feeding of a second master M after a first master M has been fed until the first master is ready for insertion at the master cylinder 115 at which point the machine control relay 190 is de-energized through operation of the insert master relay 193 by closing the master ready switch 111 and the insertion timing switch 186.
  • the insert master relay 193 is held in by its normally open contacts IMR (below line L2) after it is energized until normally closed contacts 195 of a control relay (not shown) open when a master M is inserted on the master cylinder 1 15.
  • first and second masters For the purpose of this disclosure reference is made merely to first and second masters. It should be appreciated that the description is, nevertheless, applicable to the common situation where a series of more than two originals and two masters are to be handled during a period of machine operation. In such a situation the reference to first and second will indicate the order of handling originals and masters. In cases where three or more masters are to be processed, the terms first and second may be extended by considering that the second master is a first master in relation to the next (third) master when studying the timing for the latter.
  • the circuit shown in the upper portion of FIG. 4 delays the feeding of a second master while a first master is progressing through the apparatus or is awaiting insertion on the master cylinder 115 by controlling the machine control relay 190. Feeding of a second master M is further delayed in the event that the first master is not properly inserted on the master cylinder 115 by the insertion fail relay 192 (below line L3) energized when the master ready switch 111 is closed by the first master at the ready position. When energized, the insertion fail relay 192 closes its contacts IFR to maintain the master delay relay 180 energized along line L5. When the master M is inserted on the cylinder 115 and its trailing edge releases the master ready switch 111, the insertion fail relay 192 is de-energized causing the master delay relay 180 to drop out and the second master M to be fed.
  • the above described circuitry prevents a second master from being fed until the first master has been inserted on the master cylinder 115. As suggested in the summary above, it is additionally desirable to prevent or delay processing of a second master until the printing time on the first master is approximately equal to or less than the time required to process the second master. lf processed immediately after the preceding.
  • a second master was inserted on the master cylinder, a second master would tend to loose the moisture imparted on its printing surface by treating solution 95 when awaiting use during a long copy run. Further, by drying out, a waiting master becomes somewhat stiff and difficult to feed reliably.
  • the present invention delays master preparation through the copy counter 155.
  • the master processing cycle for a second master M is started when the printing time of a first master is approximately equal to or less than the time required to process the second master.
  • preparation of a second master is delayed while the number of copies to be produced from a first master is greater than a predetermined number or count, conveniently chosen as nine.
  • master preparation is delayed by preventing the feeding of a master M into its processing path 31,-
  • the counter 155 comprises a bank of three counter assemblies U, T and H representing units, tens, and hundreds columns respectively (FIG. 2).
  • the counter assemblies U, T and H are preferably of the type disclosed in US. Pat. No. 3,203,626 to Scranton each having pushbuttons 206 circularly arranged around a rotatable shaft 208 through 210.
  • the counter 155 may be conveniently mounted on the upper portion of the housing 12 of the apparatus 10. A desired number of copies of an original is selected or set on the counter 155 by depressing a pushbutton 206 in each counter assembly U, T and H corresponding to the digits of the desired copy number.
  • the counter 155 is limited to a count of two hundred ninety-nine (299) to maintain high print quality from each master.
  • each counter assembly U, T and H is rotated in a clockwise direction by a motor (not shown) from a zero position to the angular position of a corresponding selected pushbutton.
  • switches operated by cams on the tens and hundreds counter shafts 209 and 210 control the feeding of masters M.
  • the counter 155 At each input signal from the copy count switch 151, the counter 155, operating in a descending manner, first permits the units shaft 208 to escape one digit counterclockwise until its zero position is reached. Assuming that the desired number of copies is one hundred or greater and that the units shaft 208 has returned to or was at a zero position, upon receiving the next signal from the copy count switch 151 a column shift occurs wherein the tens shaft 209, if not at zero, escapes counterclockwise or decreases one digit and the units shaft 208 escapes one digit counterclockwise to a position corresponding to the digit nine. A process of clearing or counting out the units counter assembly U from nine through zero followed by a column shift and a one digit decrease in the tens counter assembly T repeats until both the units and tens shaft 208 and 209 are in zero positions.
  • the operation of the counter 155 is the'same if fewer than one hundred copies are desired. In such a case the hundreds shaft 210 stays in its zero position and the tens shaft escapes or decreases one digit, eventually to zero, each time the units shaft passes from zero to nine.
  • the tens and hundreds counter assemblies T and H are each provided with electrical switches and an operating cam.
  • FIG. 3, shows the switch and cam arrangement of the tens assembly T which is essentially the same as that provided-for the hundreds assembly H.
  • a normally closed control switch 216 is related to control of master feeding and a normally open counter switch 218 is related to the counting function of the counter 155.
  • the master control switch 216 includes a movable contact 220 on a flexible blade 221 and a fixed contact 222.
  • the counter switch 218 includes a flexible blade 226 and a pair of contacts 225 and 227.
  • the flexible blade 226 of the counter switch 218 is provided with a follower button 228 which is engaged by a cam or pin 229 fixed to a cam wheel 230, rotatable with the shaft 209. At the zero position of the shaft 209, only, the follower button 228 is engaged by the earn 229 causing the flexible blade 226 of the counter switch 218 to move and, through an insulated link 231, moving the fiexible blade 221 to open the normally closed master control switch 216.
  • each cam 229 and 233 is adapted to hold its associated normally closed switch 216 and 217 open at the zero position of its respective counter shaft 209 and 210.
  • the time required to transport a master from the master magazine 27 to the ready position adjacent the ready switch 111 in the illustrated embodiment is approximately equal to the time required to print nine copies. It may be understood that when the counter 155 is at a count greater than nine either or both of the switches 216 and 217 will be closed since some digit other than zero must be indicated by one or both of the tens and hundreds counter shafts 209 and 210.
  • the counter switches 216 and 217 are connected in parallel to the normally open pair of contacts MDR to hold in the master delay relay 180 once it has been energized, as when the first master M is fed from the master magazine 28.
  • the relay contacts MCR and IFR at lines L4 and L5 are open to otherwise permit the master delay relay 180 to become de-energized and permit the feeding of a second master M. Assuming that more than nine copies are desired, the master delay relay remains energized through the tens switch 217 at line L6 or the hundreds switch 216 and L7, or both switches depending on the selected copy number.
  • the hundreds switch 217 retains the master delay relay 180 energized along line L6 until it is held open when the count is below one hundred and the tens switch 216 retains the master delay relay energized along line L7 until the count descends from 10 to nine and the tens switch 216 is held open.
  • the master delay relay 180 is de-energized and the master feed solenoid, in turn, is energized to feed the second master into the processing path.
  • the tens and hundreds counter shafts 209 and 210 willbe in their zero digit positions and their associated switches 216 and 217 will be held open and will, therefore, not affect the operation of the master delay relay 180 so that a second master M will be fed immediately after the first master M is insertedon the master cylinder 115 and the insertion fail relay 195 is de-energized.
  • the counter switches 216 and 217 at lines L7 and L6 may not themselves energize the master delay relay 180 but, may only hold the delay relay in through its nonnally open contacts MDR. Using the count of nine as a predetermined number at which a second master is fed simplifies the control circuit since the condition or count of the units counter assembly U may be ignored.
  • step E subsequent to step E printing lithographic copies from said second master under the control of said counter.
  • G testing said ready station at all times for the presence of a master, and in the absence of a master, sending a signal to said counter, and programming said counter to transmit said signal only when the counter is yet greater than one but less than a count which represents a print-out time corresponding to the time required to process said master, and using the signal transmitted through said counter to repeat steps (A) and (B) with another master;
  • step G securing the second master to the master cylinder and printing lithographic copies therefrom under the control of said counter.
  • a duplicating apparatus for making multiple reproductions of originals having graphic subject matter thereon from masters having a photosensitive potentially lithographic surface including:
  • imaging and master activating means including developer means for developing an ink receptive image on a master surface and for insuring the lithographic properties of the surface;
  • first control means responsive to an indication of the presence of an original at the support station to feed a first master from said supply source into said imaging and master activating means;
  • lithographic printing means operable between a printing cycle and a master ejection cycle
  • a receiving medium supply source including receiving medium feeding means operable to feed a receiving medium to said printing means during said printing cycle;
  • count registering means presettable to a given count for counting the number of copies produced on the receiving medium and initiating the ejection cycle of said lithographic printing means to eject said first master when said preset count is obtained; means to transmit said control signal to said count registering means;
  • said count registering means being programmed to transmit said signal only when the count is greater than one but less than a count which represents a print-out time corresponding to the time required to process a master through said image and master activating means.
  • a duplicating apparatus for making multiple reproductions of originals having graphic subject matter thereon, from masters having photoconductive surfaces, to receiving sheets, comprising:
  • an original feed in station including original feeding solution to said master selectively rendering the I non-image portions hydrohpilic; lithographic printing means operable between a prirging cycle and a master ejection cycle; secon con 0! means responsive to the presence of said activated first master at the predetermined position for initiating the printing cycle of said printing means;
  • a receiving sheet supply source including a receiving sheet feeding means operable to feed receiving sheets to said printing means during said printing cycle;
  • count registering means presettable to a given count, for counting the number of copies produced and initiating the ejection cycle of said lithographic printing means to eject said first master when said preset count is obtained and including mean for completing a control circuit from said means to establish a control signal to said master feeding means to cause that means to feed a second master only while the count for copies of the first original is above a predetermined number greater than zero and within a range which represents a time interval substantially corresponding to the time required to image and activate a master.
  • said count registering means comprises a plurality of counter assemblies each representing'a counter column and said energization establishing means includes a switch associated with at least one of said counter assemblies electrically operable to complete a circuit to cause feeding of a master.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
US54719A 1970-07-14 1970-07-14 Master making control for duplicating machine Expired - Lifetime US3683803A (en)

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US (1) US3683803A (de)
JP (1) JPS531683B1 (de)
BE (1) BE769978A (de)
CA (1) CA946460A (de)
DE (1) DE2134916A1 (de)
FR (1) FR2101685A5 (de)
GB (1) GB1355172A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893391A (en) * 1973-05-21 1975-07-08 Addressograph Multigraph Control circuit for master quantities in printing systems
DE2656112A1 (de) * 1975-12-11 1977-06-23 Ricoh Kk System zum steuern der druckqualitaet einer druckmaschine
US4036135A (en) * 1974-09-30 1977-07-19 Mathias Bauerle Gmbh Offset duplicator with master treating means
US4064804A (en) * 1975-06-26 1977-12-27 Addressograph Multigraph Corporation Duplicator and method of duplicating
US4092919A (en) * 1974-05-07 1978-06-06 Tanaka Seiki Co., Ltd. Card selecting and address printing apparatus
US4129073A (en) * 1974-12-20 1978-12-12 Gerhard Ritzerfeld Duplicator machine with means for applying to the copies different markings
US4232602A (en) * 1977-01-07 1980-11-11 Gestetner Limited Plate loader for offset printing machines
US5699736A (en) * 1995-03-20 1997-12-23 Man Roland Druckmaschinen Ag Method and apparatus for controlling the sheet supply in a sheet-processing printing machine
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DE2452979C2 (de) * 1974-11-08 1981-12-24 Hoechst Ag, 6000 Frankfurt Beleuchtungseinrichtung in einem Projektionskopiergerät
JPS52139440A (en) * 1976-05-17 1977-11-21 Canon Inc Electrostatic printing machine
JPS52139429A (en) * 1976-05-17 1977-11-21 Canon Inc Printer

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US3203626A (en) * 1963-02-20 1965-08-31 Addressograph Multigraph Counter
US3264981A (en) * 1964-04-15 1966-08-09 Addressograph Multigraph Tandem printer
US3412676A (en) * 1965-07-07 1968-11-26 Dick Co Ab Automated control system and apparatus for offset duplicating machine
US3430558A (en) * 1965-09-30 1969-03-04 Xerox Corp Sheet counting system in a reproduction machine
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US3893391A (en) * 1973-05-21 1975-07-08 Addressograph Multigraph Control circuit for master quantities in printing systems
US4092919A (en) * 1974-05-07 1978-06-06 Tanaka Seiki Co., Ltd. Card selecting and address printing apparatus
US4036135A (en) * 1974-09-30 1977-07-19 Mathias Bauerle Gmbh Offset duplicator with master treating means
US4129073A (en) * 1974-12-20 1978-12-12 Gerhard Ritzerfeld Duplicator machine with means for applying to the copies different markings
US4064804A (en) * 1975-06-26 1977-12-27 Addressograph Multigraph Corporation Duplicator and method of duplicating
DE2656112A1 (de) * 1975-12-11 1977-06-23 Ricoh Kk System zum steuern der druckqualitaet einer druckmaschine
US4232602A (en) * 1977-01-07 1980-11-11 Gestetner Limited Plate loader for offset printing machines
US5699736A (en) * 1995-03-20 1997-12-23 Man Roland Druckmaschinen Ag Method and apparatus for controlling the sheet supply in a sheet-processing printing machine
US20140190363A1 (en) * 2013-01-04 2014-07-10 Goss International Americas, Inc. Registration system for a variable repeat press

Also Published As

Publication number Publication date
CA946460A (en) 1974-04-30
JPS531683B1 (de) 1978-01-21
GB1355172A (en) 1974-06-05
FR2101685A5 (de) 1972-03-31
BE769978A (fr) 1971-11-16
DE2134916A1 (de) 1972-01-20

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