US3690250A - Compact label printer - Google Patents

Compact label printer Download PDF

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Publication number
US3690250A
US3690250A US55361A US3690250DA US3690250A US 3690250 A US3690250 A US 3690250A US 55361 A US55361 A US 55361A US 3690250D A US3690250D A US 3690250DA US 3690250 A US3690250 A US 3690250A
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Prior art keywords
gears
shaft
differential
driving
type wheels
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Expired - Lifetime
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US55361A
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English (en)
Inventor
David F Bremner
Stephen B Smith
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NCR Voyix Corp
National Cash Register Co
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NCR Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/48—Type carrier arrested in selected position by electromagnetic means

Definitions

  • ABSTRACT A remotely-controlled print module for use in printing labels or the like wherein differential gears are aligned on a common drive shaft and oscillatably driven to a predetermined position controllable by means of a bail shaft extending through gear slots, the gears meshing with type wheels carried on a shaft parallel to the drive shaft, The gears are loaded in one direction by means of cables and springs and, during the remotelycontrolled cycle of operation, are stopped at predetermined positions by means of indexing pawls which are selectively energized through electromagnetic solenoids, the stopped position of the type wheels being compatible for striking by print hammers.
  • the differential gears and thus the type wheels are remotely selectively controlled by computer-type commands which allow for versatility of expansion and compactness of packaging of the print module.
  • p'ricelabeling machines have included the customary roll of record material, means driving andguiding-the record material in a path to a printing mechanism, and cuttingmeans positioned to remove the printed record material portion (i. e'.,label) in singular fashion for depositing on the package.
  • the customary roll of record material means driving andguiding-the record material in a path to a printing mechanism, and cuttingmeans positioned to remove the printed record material portion (i. e'.,label) in singular fashion for depositing on the package.
  • the prior art teaches the selective setting and control of various mechanisms for indicating and counting functions wherein the cyclic operation has included the use of control rack and gear members, pawl and ratchet arrangements, and spring-urged actuating means for accomplishing the positioning of the indicating or counting units one such mechanism being shown and described in U.S. Pat No. 2,603,702, issued July 15, 1952, on the application of Jack I. Kern.
  • Another example of the prior art relating to a limiter-type reading, improvements are desired 'in remotely controlled label printers of the type disclosed herein.
  • the present invention relates to a label printer and, more particularly, to a printer utilizing a compact, remotely-controlled print module wherein the module includes an oscillating differential line meshing with cooperating typewheels, in. turn selectively and in dividually positionable to be struck by appropriate print hammers in accordance with predetermined or programmed logic.
  • the print module includes in the drive line a plurality of differential gears aligned on a shaft and fashioned to be driven in an oscillating manner by means of a double-surface box cam and associated linkage arrangement which is responsive to input signals at predetermined intervals.
  • the differential gears are controlled in speed and direction of rotation by a bail shaft which passes through radial slots in the gears, thebailshaftbeing carried on a line parallel to and spaced from thedrive shaft.
  • the differential gears are positioned in meshing relationship with typewheels having appropriate teeth between surfacemanner to allow close andcompact spacing of them counter with automatic reset using spring-loaded pawls, a predeterrnining wheel, and a counter wheel is disclosed in US. Pat. No. 2,858,985, issued Nov. 4, 1958, on the application of Wilfred A. Blaser, and, ad-
  • each differential gear Located adjacent and in line with the plane of each differential gear is a spring-loaded indexing pawl actuable by an electromagnetic solenoid, which, on signal from the remote control system, if fired to cause the pawl to engage with its associated differential gear and stop such gear at the desired position during its' rotation, so as to present the proper character to the print hammer.
  • the solenoids are mounted in staggered and of the pawls which they actuate during the cyclic operation.
  • a typewheel liner extending the length of I the typewheels, is carried on arms pinned to the drive shaft, the liner being wedge-shaped to fit the teeth of the typewheels between the characters to insure that all wheels are aligned prior to being struck by the print hammers.
  • An over-ride spring is wound on one of the liner driver support arms to prevent character distortion in the event that a typewheel is not correctly positioned and aligned for being struck by the print hammer.
  • the principal object of the present invention is to provide a label printer having a compact print module.
  • Another object of the present invention is to provide a print module for a label printer wherein the typewheel position is controlled remotely from the printer.
  • a further object of the present invention is to provide an oscillatably-operated print module wherein the differential line is loaded in one direction to insure positive drive.
  • An additional object of the present invention is to provide a compact and efficient print module for printing labels or receipts and including oscillating-line gears and hence oscillating typewheels.
  • FIG. 1 is a front view of a label printer utilizing the print module of the present invention
  • FIG. 1A is a view, partially diagrammatic, showing the printer drive line from a prime mover to the print module drive shaft;
  • FIG. 2 is an enlarged front view of the compact print module of the present invention, with the front plate thereof being omitted for clarity of certain parts;
  • FIG. 3 is a top view of the print module shown in FIG. 2; 7
  • FIG. 4 is a bottom view of the module shown in FIG.
  • FIG. 5 is a right side elevational view of the print module shown in FIG. 2, and additionally including a wiring harness and schematic representation of drive and control units therefor;
  • FIG. 6 is a left side elevational view of the module shown in FIG. 2;
  • FIG. 7 is a view taken on the side opposite from that shown in FIG. 2, or a rear view of the print module;-and
  • FIG. 8 is an enlarged stretched-out view'showing the line-up of the various module shafts as taken'on the line 8-8 of FIG. 2.
  • the present disclosure will be principally confined to the print module of the present invention, asgit will be seen that the print module is a complete unit in itself and may thus be applied to any one of a number of business machines where remote control of the type wheels is a desireable feature.
  • the compact print module is particularly applicable in a cash-register-type label printer having other mechanism, as disclosed in U.S. Pat. No. 2,730,038, issued Jan. 10, I956, on the application of Mayo A. Goodbar and Russell G. Pratt; and also isapplicable with feed control mechanism of the type disclosed in U.S. Pat. No. 2,889,769, issued June 9, 1959, on the application of Mayo A. Goodbar, Russell G. Pratt, and Clarence A. Bacher.
  • the supply roll may have preprinted information thereon, and the function of the label printer is to print further data in certain blank spaces.
  • An example of the latter is the labeling of pre-packaged commodities, where the preprinted data would include the name of the business, the name of the commodity, and the type thereof, while the data to be printed would include the weight, the price per pound, and the total price of the package.
  • the illustrated course of label preparation follows a procedure wherein the label material is fed from a supply roll through a guide chute between a serrated printing cylinder and a rubber tension roller which coacts with the printing cylinder to feed the material past a knife and through a second guide chute connected to the knife, thence into coacting relationship with typewheels and cooperating print hammers, and thereafter to a label-ejecting mechanism comprising two rollers which eject the label from a third chute after it has been severed from the'supply material'by the knife.
  • a framework which includes right and left frame members 10 and 12 secured in properly.
  • a base plate 14 spaced relationship to each other by a base plate 14 and by various cross frames, rods, and bars, the base plate 14 in turn being secured to a machine sub-base 16.
  • the framework may be modified from that shown to enclose features and mechanism not considered a part of the present invention.
  • the mechanism for feeding and printing the labels is shown as including a supply roll 17, from which a label strip 18 is fed through an elongated guide chute 19 between a printing cylinder 20 and a rubber tension roller 22, which coacts with the cylinder to feed the strip l8 past a knife 24 and through anintermediate chute 26, connected to the knife, thence into coacting relationship with typewheels 28 and cooperating print hammers 30, and finally to a label-ejecting mechanism comprising rollers 32 and 34, which eject the edge of a label 36 .out of a lower chute 38 after it has been severed from the supply strip 18 by the knife 24.
  • a compact module generally designated as 40 (shown enlarged in FIG. 2) and which includes driven differential mechanism controlled from a computer or like processor through control wiring devices.
  • a motor 41 is carried in'the upper left-hand corner of the machine to provide the driving force for the various components therein, the drive line including various transmission gears, clutches, or the like to impart rotary motion to the gears 42 and 43in a vicinity near the print module 40.
  • the motor '41 supplies power to other machine components, the drive is herein simply shown diagrammatically from the motor to the gears 42 and 43 (FIG. 1A).
  • the gear 43 meshes with a cam-carrying gear 44, one'portion 45 of the cam being aligned on a pin-type shaft 46.
  • the cam is of a double-surface box type which includes an irregular path to be followed by a stud 47 attachedto a follower bar 48 near one end thereof.
  • the follower bar 48 has an elongated slot 49 for slidingly receiving the shaft 46 therein, there being also a second slot 50 spaced along the bar 48 for receiving a pin 51.
  • An arm 52 fixed to a further gear 53, has an aperture therein for receipt of a stud 54 secured to the bar 48, the stud forming a pivotal relationship between the arm and the bar.
  • the gear 53 meshes with a small gear secured to a larger gear 55, which, in turn, meshes with a drive gear 56 for driving in oscillating fashion the differentials of the print module 40.
  • all of this drive train is supported from the framework, which, in turn, supports a front plate 57, to which the print module 40 is attached.
  • the print module 40 itself includes a mounting plate 58 to which are attached solenoids 59 (FIGS. 2, 3, 5, and 7), each of which is energized or activated through electrical leads 60 and 61 (FIG. 5). Since there are a plurality of such solenoids, differential gears, indexing pawls, and typewheels making up the print module, it is apparent that a detailed description of a single line-up of these parts is sufficient to teach the embodiment of the invention. Exceptfor the different locations of the solenoids 59 in a staggered manner (see FIG. 5) for actuating the closely-spaced indexing pawls and differential gears, the structure is very similar for each of As understood from FIG.
  • solenoids 59 two types are provided the pull type and the push type.
  • the op three and the bottom three of such solenoids are of the pull typeand include plungers pivotally connected to the associated pawls at points removed from the pawl portions 96, thereby extending the springs 95 when swinging the tips into engagement with teeth of the gears 66.
  • the six remaining solenoids positioned in the central portion of the print module are of the push type, wherein the plunger of each is pivotally connected to the pawl adjacent the tip portion 96, so as to extend the spring 95 when pushing the pawl tip into contact with a selected tooth of the associated differential gear 66 to interrupt rotation of the gear as the proper character on the connected type wheel is the twelve columns of controlled typewheel printing provided, as shown in FIGS. 4, 6, and 8.
  • the typewheel-setting mechanism of the module 4 comprises a shaft 62 driven in oscillating fashion through the drive gear 56, the gear beingkeyed to the shaft, whichextends through and is joumaled in a front plate63 and a rear plate 64, and which plates are secured to the solenoid mounting plate 58 by suitable screws 65.
  • the shaft 62 carries a plurality of differential gears 66 spaced thereon (FIGS. 3, 4, and 6), the gears having teeth 68 (see also FIGS. 2 and 7) for engaging with companion gear slots 70 of the typewheels 28 journaled on a shaft 73 parallel to the shaft 62 and carried by the plates 63 and'64.
  • Each of the'differential gears 66 has a radially-spaced slot 74, through which a bail 76 extends for urging the gears 66 in one direction and for allowing the gears to rotate independently of the urging thereof, the bail being held parallel to the shaft 62 by means of front and rear arms 78 and 80 (FIG. 6) pinned to the shaft 62 so as to move therewith.
  • each of the differential gears 66' has a second radially-spaced sl0t82, opposite the slot 74, for receiving a stop shaft 84 (seealso FIG. 7) secured to the plates 63 and 64 positioned parallel to the main shaft 62 and to the bail 76.
  • the shaft 84 acts as a stop element against the urging of springs loading the gears 66 in one direction and also as a stop element to limit the amount of travel of the gears in the other direction.
  • the slots 82 permit the gears 66 to rotate independently of the stop shaft 84 during the oscillating motion.
  • a plurality of upper and lower indexing pawls 90a and 9011 are oriented and pivotally supported in a manner compatible and aligned with the solenoids 59 and with the differential gears 66, each of the upper pawls 90a having a body portion pivoted on a pin 94 and loaded in a counterclockwise direction (FIG. 2) by a spring 95 secured to a crossshaft 95a.
  • each of the lower pawls 90b is pivoted at the pin 93 and loaded in a clockwise direction (FIG. 2) bya spring 95 secured to a cross shaft 95b.
  • Each of the pawls 90a and 90b is so positioned for actuation by its associated solenoids 59 that a tip portion 96 thereof is moved to engage the teeth of the associated differential gear 66 and to stop said gear in such a position as to cause a predetermined character on the typewheel 28 controlled by the associated gear to be presented to the print hammer 30.
  • a solenoid plunger restrictor 106 (FIGS. 2 and 7). is spaced from the solenoid support plate 58 and secured thereto by means of a long stud 107.
  • a typewheel liner 110 (FIGS. 6 and 8), of wedgeshaped configuration, so as to fit between'the character teeth of the typewheels 28 (FIGS. 2 and 7), extends the width of the typewheels and is pivotally supported by arms 111 and 112 from the side plates 63 and 64.
  • the liner 110 Upon being driven during machine operation by an arm 113 secured to the differential shaft 62, the liner 110 engages ,the typewheels and aligns them in correct position for being struck by the print hammers 30.
  • the arm 113 extends radially from the shaft 62 (FIGS. 2, 4, and 8) and has a stud 114 at its end for engaging with a lower end cam portion 115 (FIG.
  • a liner-actuating arm 116 which is pivoted on the same studas is the support arm 111 of the liner 110.
  • the actuating arm 116 carries an upper stud 117 (FIGS. 2 and 3), to which is attached one end of a tension spring 118, the other end of the spring being connected to a stud 1 19 in the plate 63.
  • the spring 118 exerts a force on the actuating arm 116 to maintain the liner 110 in a counterclockwise direction (FIG. 2) and out of the path of the typewheel teeth until the typewheels are all positioned and ready for impact by the associated print hammer 30.
  • the arm 116 has an additional stud 120 engageable by a cam portion of the support arm 111, and, additionally, the side plate 63 carries a stud 121 to limit movement of the arm 116 in a counter-clockwise direction.
  • a small torsion spring 112 (FIG. 2) is provided around the liner pivot hub, with one end thereof connected to the stud 120 and the other end connected to a stud on the side of the support arm 11], the spring thus acting to exert a small force on the liner 110 but in opposition to the tension of the spring 118 to prevent character distortion in the event that one typewheel is not correctly positioned in the line-up ready for printmg.
  • each of the differential gears 66 is spring-loaded in a clockwise direction'by means of a cable 130 secured to a gear stud 131 (see also FIG. 8) and trained around a cable-bearing shaft or roller 132 and connected to one end 133 of a spring 134, the other end 135 of said spring being secured to either of two shafts 136, 137 fixed between the side plates 63 and 64, these shafts being spaced to allow for freedom of movement of the springs 134 in a compact assembly.
  • the print module solenoids 59 of the present invention are connected by the leads 60 and 61 through a terminal block 140 and by a multiconductor cable 141 to a computer device 142, such device being in the nature of a scale or the like for automatically weighing and pricing each package presented thereto.
  • a computer device 142 Connected to the device 142 by means of a cable 143 is.a commutator 144, in turn connected to the motor 41 by a cable 145. So that signals can be transmitted'from the computer device'to the-motor, a further cable 146 connects 'these components to complete the. loop of transmitting and receiving signals for operation of the system.
  • the unit In the operation 'ofthe compact label printer, the unit is turned on, with the motor 41 providing motive power for allcomponents of the machine-The supply strip 18 is fed downwardly through the guide chutes 19 and 26, and, when the label is in position for printing, the computer or like remote control device gives the signal to the print module 40 to print a particular line of type thereon.
  • the computer or like remote control device gives the signal to the print module 40 to print a particular line of type thereon.
  • the commutator 144- monitortors the positions of each typewheel 28 in the print module 40 and transmits this information to the computer device 142.
  • the proper line of print is selected through the print module by the computer.
  • the module main shaft 62 begins its oscillating motion and rotates first clockwise from the position shown in FIG. 2 at a precise speed controlled by the doublesurface box cam drive 45, each of the differential gears 66 being then spring-loaded in the clockwise direction by means of its cable 130 and spring 134, so that the gear follows the bail shaft 76 in the shafts control of direction and speed of such gears.
  • each of the differential gears 66 is meshed with an associated typewheel 28, the wheel is driven by such gear but in the opposite, or counter-clockwise, direction, as viewed in FIG. 2.
  • the position of each typewheel is constantly and continuously communicated to the remote control device 142 by the commutator 144, which interfaces the attitude of each wheel to the computer.
  • the solenoid 59 corresponding to that differential gear 66 is energized by means of capacitor discharge, and the solenoid is held in the energized position by the lower level current.
  • the firing of the solenoid causes the end tip portion 96 of its associated'pawl a or 90b to enter between the teeth of the differential gear to a controlled depth limited in a swingable path by the stop element 108 or 109, which causes the gear '66 and its corresponding typewheel 28 to stop with the proper character presented to the type hammer 30.
  • the firing of one or more of the solenoids 59 as dictated by the desired line of print on the label, thus interrupts the rotation of the selected differential gear 66 and its typewheel 28 at a precise position for printing. Due to the length of the slot 74 in each differential gear 66, the bail 76 is allowed to continue in its clockwise movement and thus leave that particular differential 'gear inits stopped position.
  • the second slot 82 in the differential gears 66 limits the travel of each gear to the blank character position of the wheel, the shaft becoming seated against the end of the slot.
  • the main shaft 62 continues its clockwise rotation another slight amount and, by reason of the stud 114 contacting the cam portion 115 of the arm'116, causes the typewheel liner to engage the groove between the character teeth in each typewheel to align all the wheels 28 just prior to the printing operation. After the liner has engaged the groove to precisely hold all the type wheels, the main shaft 62 pauses to so maintain all said wheels in their correct printing positions.
  • the appropriate mechanism has fed the strip 18 of label material downwardly a predetermined distance, severed a label 36 from the strip, and positioned the label in its correct printing attitude. At this point in time, the print hammer 30, being spring loaded and cocked, is
  • the commutator 144 allows power to be removed form the solenoids 59; however, the typewheels 28 are held in position because the liner 40 remains in mesh with the wheels.
  • the spring-loaded pawls 90a and 90b will automatically move out of contact with the teeth of the differential gears 66.
  • the main shaft 62 being controlled by the double-surface box cam 45 and the slotted follower bar 48, starts return rotation counter-clockwise, as
  • the printed label 36 is fed through the guide chute 38 and ejected from the machine through the rollers 32 and .34. With such ejection and reset completed simultaneously, the machine is now ready to accept the next command from the remote control computer 142.
  • the print module includes a positive differential drive line addedbythe spring loading of the differential gears to position the type wheels for accurate printing on the labels. While only one embodiment has been disclosed for the construction and operation of the print module, certain variations on the/above may occur to those skilled in the art, so it is contemplated that all such variations having these features are within the scope of the invention.
  • lJA compact print mechanism comprising a plurality of differential gears commonly aligned on a driven shaft
  • type wheels cooperating with and driven by the differential gears, the type wheels having teeth thereon with grooves therebetween engaging with the gear teeth,
  • each of the gears having a radially-spaced slot therein, a
  • bail shaft positioned along the gears and carried within the slots and secured to and spaced from the driven shaft for controlling direction and movement of the gears, said spring means exerting continuous biasing on said gears and permitting the bail shaft to be driven independently of the gears during the oscillating movement,
  • pawl means pivotally supported in relation to the differential gears for engagement with selected gears, and a plurality of remotely-energized solenoids for actuating the pawl means to engage with the selected gears at predetermined positions during one portion of their driving cycle to stop the selected gears for presentation of characters on the type wheels in position for printing.
  • a compact print module comprising a first plate and a second plate space therefrom, a
  • me s for oscillatabl drivin the aft, spri ri g means conne ted to 51c differential gears for driving the gears in one direction of travel, a plurality of type wheels journally supported from the plates and engaged by the differential gears to be rotated thereby, a bail shaft spaced from the differential shaft and movable therewith along a path in the gear slots for controlling direction and movement of the gears by permitting selected gears to cease movement and allowing other gears to be driven therebeyond in one direction, and for drivingly returning all the gears in the other direction, a plurality of pawls pivotally supported from the plates and adapted to.
  • each of the gears having a first and a second slot radially spaced therein, a
  • said means for driving including a plurality of springs connected to the printer and to the gears for driving said gears in the type wheels setting direction of travel and a pair of arms secured to the driven shaft for moving the bail shaft in a path of controlled movement cooperable with the spring driving of the gears during said one portion of oscillanon,
  • stop means adjacent the driven shaft and operable within the second slots for limiting movement of the gears at the end of said one portion, said bail shaft moving with the driven shaft to collectively

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Labeling Devices (AREA)
  • Handling Of Sheets (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
US55361A 1970-07-16 1970-07-16 Compact label printer Expired - Lifetime US3690250A (en)

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US5536170A 1970-07-16 1970-07-16

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US3690250A true US3690250A (en) 1972-09-12

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US (1) US3690250A (enExample)
CA (1) CA949384A (enExample)
DE (1) DE2135288A1 (enExample)
FR (1) FR2146089B1 (enExample)
GB (1) GB1294257A (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874286A (en) * 1972-08-30 1975-04-01 Ricoh Kk Printing apparatus
US3930444A (en) * 1973-04-25 1976-01-06 Carl Valentin Gmbh Printing device for imprinting selected characters on a movable record medium
US4114533A (en) * 1977-04-11 1978-09-19 Pitney-Bowes, Inc. Automatic postage meter date setter
US4220082A (en) * 1979-05-03 1980-09-02 Esselte Pendaflex Corporation Print wheel selection mechanism
US4345521A (en) * 1981-01-14 1982-08-24 Pitney Bowes Inc. Inhibiting means for postage register parcel identification system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1749698A (en) * 1930-03-04 evans
US2142352A (en) * 1934-09-07 1939-01-03 Ibm Combined record sorting and accounting machine
US2922361A (en) * 1957-11-01 1960-01-26 Toledo Scale Corp Printer
US3176610A (en) * 1963-10-25 1965-04-06 Anelex Corp Type-setting mechanism for high speed printers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1749698A (en) * 1930-03-04 evans
US2142352A (en) * 1934-09-07 1939-01-03 Ibm Combined record sorting and accounting machine
US2922361A (en) * 1957-11-01 1960-01-26 Toledo Scale Corp Printer
US3176610A (en) * 1963-10-25 1965-04-06 Anelex Corp Type-setting mechanism for high speed printers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874286A (en) * 1972-08-30 1975-04-01 Ricoh Kk Printing apparatus
US3930444A (en) * 1973-04-25 1976-01-06 Carl Valentin Gmbh Printing device for imprinting selected characters on a movable record medium
US4114533A (en) * 1977-04-11 1978-09-19 Pitney-Bowes, Inc. Automatic postage meter date setter
US4220082A (en) * 1979-05-03 1980-09-02 Esselte Pendaflex Corporation Print wheel selection mechanism
US4345521A (en) * 1981-01-14 1982-08-24 Pitney Bowes Inc. Inhibiting means for postage register parcel identification system

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DE2135288A1 (de) 1972-02-10
FR2146089A1 (enExample) 1973-03-02
CA949384A (en) 1974-06-18
GB1294257A (en) 1972-10-25
FR2146089B1 (enExample) 1975-09-26

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