US3461797A - Eccentrically mounted platen structure in selective printing machines - Google Patents

Eccentrically mounted platen structure in selective printing machines Download PDF

Info

Publication number
US3461797A
US3461797A US679037A US3461797DA US3461797A US 3461797 A US3461797 A US 3461797A US 679037 A US679037 A US 679037A US 3461797D A US3461797D A US 3461797DA US 3461797 A US3461797 A US 3461797A
Authority
US
United States
Prior art keywords
platen
roller
pair
printing
eccentrically mounted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US679037A
Other languages
English (en)
Inventor
Trab Dipl-Ing Abdulrahi Cheikh
Heinz Ricke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympia Werke AG
Original Assignee
Olympia Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympia Werke AG filed Critical Olympia Werke AG
Application granted granted Critical
Publication of US3461797A publication Critical patent/US3461797A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B41L7/00—Apparatus for directly duplicating from hectographic originals, i.e. for obtaining copies in mirror image
    • B41L7/02—Apparatus for directly duplicating from hectographic originals, i.e. for obtaining copies in mirror image by passing original and copy-sheet or -web between rollers
    • B41L7/08—Apparatus for directly duplicating from hectographic originals, i.e. for obtaining copies in mirror image by passing original and copy-sheet or -web between rollers with means for moistening or drying
    • 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
    • B41J7/36—Selecting arrangements applied to type-carriers rotating during impression
    • B41J7/46—Rolling contact during impression
    • 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
    • B41L11/00—Apparatus for directly duplicating from hectographic masters in mirror image, i.e. "wet duplicators" for producing positive copies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2700/00—Manifolding, printing or duplicating for office purposes
    • B41P2700/10—Hectographic line duplicators

Definitions

  • a cylindrical platen, cooperating with a printing roller, is eccentrically journaled in a pair of continuously rotating end disks so as to perform a cycloidal (or, in an extreme case, rectilineal) motion parallel to itself, under the control of a planetary-gear system of the same eccentricity, whereby the platen is periodically moved toward the yieldably supported printing roller; on its swing away from the printing roller, the platen acuates a ribbon transport and a paper feed while drawing both the paper and the ribbon clear of the roller to permit resetting of its type faces.
  • Our present invention relates to a machine for printing or otherwise recording data registered in the form of character combinations on a presettable carrier member such as a printing roller.
  • a prime object of our invention is to provide an improved system of this general type which, while utilizing the aforedescribed rolling motion, affords access to and visibility of the recorded characters during all stages of operation.
  • Another important object is to provide a machine of this kind which prints or othe'wise records a complete row of characters during each operating cycle, thereby reducing the total number of revolutions required for the completion of a given number of lines.
  • a further object of our invention is to provide means in such machine for disengaging the recording medium, e.g. a paper strip, and an associated ink ribbon (in the case of a printer) from the character carrier between operating cycles so as to enable a resetting of the characters without smudging or interference.
  • the recording medium e.g. a paper strip
  • an associated ink ribbon in the case of a printer
  • the recording medium is advanced through the gap between the platen and the character carrier in a position of substantial separation of these two members from each other, this advance being accomplished with the aid of a feed mechanism controlled by the oscillatory transverse motion of the platen itself.
  • the platen may be journaled in its drive element through a pair of gudgeons of which at least one is engaged by a linkage designed to trip the feed mechanism during the withdrawal stroke of the platen.
  • an ink ribbon interposed between the recording medium and the printing roller may be advanced by a transport mechanism stepped in response to the transverse stroke of the platen.
  • the recording medium and the ink ribbon may be guided and supported by elements connected with the platen so as to follow the transverse oscillations of the latter and to clear the printing roller during the resetting of its type faces.
  • the printing roller is resiliently biased toward the platen so as to yield to the radial pressure from the platen in the position of closest ap proach in which printing is carried out.
  • FIG. 1 is a top plan view, partly in section, of the principal elements of a data-printing machine embodying the invention.
  • FIG. 2 is a cross-sectional view taken on the line IIII of FIG. 1.
  • the machine shown in the drawing comprises a frame 1, illustrated in part only, fixedly supporting a pair of bearing sleeves 2.
  • the inner peripheries of these sleeves are toothed at 3 to form a pair of stationary ring gears centered on a common axis 0.
  • Parallel to this axis 0 lies the axis P of a cylindrical platen 5, provided with a somewhat yieldable coating of hard rubber or the like, whose extremities are rigid with planetary gears 4 (only one shown) respectively in mesh with the surrounding ring gears 3.
  • Platen 5 terminates in a pair of coaxial gudgeons 6 which eccentrically traverse a pair of driving elements 7 in the form of spur gears.
  • a common drive shaft 24 carries pinions 25 engaging the spur gears 7 to rotate same in unison about the axis 0, elements 7 being journaled for this purpose in sleeves 2 through the intermediary of roller bearings 8.
  • platen 5 executes a cycloidal motion parallel to itself as its end gears 4 roll on the inner peripheries of the toothed track members 3; the pitch diameter of gears 4 is shown to equal the outer diameter of the platen.
  • a printing roller 9 is mounted alongside the platen 5, being journaled in a pair of supporting levers 10 which are swingable about a fixed fulcrum 26. These levers are biased by respective tension springs 11 in a counterclockwise direction (as viewed in FIG. 2), i.e. toward the platen 5, and normally bear upon stops 12 here shown as disks eccentrically carried on a rod 27 on which they are angularly adjustable to vary the position of the roller.
  • the latter is shown to comprise a multiplicity of digit wheel 28 which are individually settable by means of gear teeth 29 under the control of associated sector gears 30, in a manner well known per se in the adding-machine art.
  • each of these wheels is shown to carry ten numerical type faces for the decadic printing of information from associated dataprocessing equipment.
  • a pair of bars 13 carrying a curved apron 32 which serves as a guide for a sheet of printing paper 18.
  • Apron 32 has a cutout at 33 through which the platen 5 can project into contact with the paper 18.
  • Swingably mounted on each bar 13 is a pawl 14 engaging the teeth of a ratchet 15.
  • a slotted extremity 34 of the bar 13 straddles the corresponding gudgeon 6 so that the two bars oscillate in the direction of arrow 35, FIG. 2, in response to the cycloidal displacement of platen 5.
  • the pawls 14 step the associated ratchets 15 which are rigid with a feed roller 16 co-operating with another roller 17 to advance the sheet 18 through the gap between the platen 5 and the printing roller 9; this feeding operation takes place as the platen approaches its position of maximum separation from the printing roller.
  • Gudgeons 6 are also in similar engagement with a pair of bars 19 that form part of a frame 36 which supports reels 20, 20' of an ink ribbon 21.
  • Reel 20 is rigid with a ratchet 22 which is stepped by a pawl 23, pivoted on machine frame 1, whenever the frame 36 follows the motion of platen 5 away from roller 9; pawl 23 is under tension of a biasing spring 37.
  • a retaining pawl 38 prevents reverse rotation of ratchet 22; such retaining pawl may, of course, also be provided for the ratchet 15.
  • a spring-loaded arm 39 bears upon the part of ribbon 21 which is wound up on reel 20.
  • both the sheet 18 and the ribbon 21 will move away from roller 9 in step with the platen 5, thus allowing the type wheels 28 to be freely reset between printing operations.
  • any peripheral point of platen 5 may generally be described as cycloidal, this motion may degenerate to a linear reciprocation in a radial plane through axis in the specific case in which the pitch diameter of planetary gears 4, as well as the platen diameter, equals half the pitch diameter of ring gears 3. It will, however, be generally preferably to choose a different tooth ratio, particularly one in which the numbers of teeth of the two gears are relative primes so that different surface portions of platen confront the printing roller 9 during successive revolutions.
  • a carrier member defining a character axis alongside said platen settable about said axis to present selected characters to said platen;
  • said carrier member is a printing roller
  • said supporting means being coupled with said platen for withdrawing said ink ribbon from said printing roller upon said platen leaving said position of closest approach.

Landscapes

  • Handling Of Sheets (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
US679037A 1966-11-05 1967-10-30 Eccentrically mounted platen structure in selective printing machines Expired - Lifetime US3461797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO0012062 1966-11-05

Publications (1)

Publication Number Publication Date
US3461797A true US3461797A (en) 1969-08-19

Family

ID=7352582

Family Applications (1)

Application Number Title Priority Date Filing Date
US679037A Expired - Lifetime US3461797A (en) 1966-11-05 1967-10-30 Eccentrically mounted platen structure in selective printing machines

Country Status (5)

Country Link
US (1) US3461797A (de)
CH (1) CH455351A (de)
DE (1) DE1524472B1 (de)
GB (1) GB1186260A (de)
NL (1) NL6713281A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618513A (en) * 1968-12-20 1971-11-09 Olympia Werke Ag Printing mechanism including resiliently biased rotatable-type wheels
US3683800A (en) * 1969-06-27 1972-08-15 Olivetti & Co Spa Serial printing mechanism
US3835770A (en) * 1970-02-27 1974-09-17 Suwa Seikosha Kk Compact flying printer
US3844396A (en) * 1972-02-02 1974-10-29 Bio Logics Products Printing upon and encoding identification devices
FR2279552A1 (fr) * 1974-07-25 1976-02-20 Addmaster Corp Imprimante a compression pour papiers ou piles de papier de differentes epaisseurs
US3949664A (en) * 1970-02-27 1976-04-13 Kabushiki Kaisha Suwa Seikosha Compact flying printer
USRE28796E (en) * 1970-02-27 1976-05-04 Kabushiki Kaisha Suwa Seikosha Compact flying printer
US3954054A (en) * 1974-07-25 1976-05-04 Addmaster Corporation Squeeze printer for papers or stacks of papers of varying thicknesses
US4335651A (en) * 1979-08-07 1982-06-22 Postalia Gmbh Setting device for denominations in franking and value stamping machines
US4780007A (en) * 1987-06-29 1988-10-25 Ncr Corporation Record media thickness compensating mechanism
US4979835A (en) * 1987-09-09 1990-12-25 Mannesmann Aktiengesellschaft Parallel setting device for a print head slide support guide

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2107142A (en) * 1937-01-23 1938-02-01 Gardner Company Listing adding machine
US2799221A (en) * 1955-09-02 1957-07-16 Olivetti Corp Of America Printing mechanism
US2858536A (en) * 1954-05-13 1958-10-28 Ca Nat Research Council Type actuating means in high speed printers
US2885956A (en) * 1955-07-29 1959-05-12 British Tabulating Mach Co Ltd Printing mechanisms
US2910936A (en) * 1959-01-19 1959-11-03 Clary Corp Printer mechanism
US2915968A (en) * 1958-10-30 1959-12-08 Clary Corp Printer
US3023698A (en) * 1958-12-16 1962-03-06 Nat Dairy Prod Corp Marking apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1056398B (de) * 1954-02-05 1959-04-30 Olympia Werke Ag Kennzeichendruckvorrichtung fuer Buchungsmaschinen
NL197207A (de) * 1954-05-13
DE1138267B (de) * 1961-02-06 1962-10-18 Siemens Ag Zeilendrucker

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2107142A (en) * 1937-01-23 1938-02-01 Gardner Company Listing adding machine
US2858536A (en) * 1954-05-13 1958-10-28 Ca Nat Research Council Type actuating means in high speed printers
US2885956A (en) * 1955-07-29 1959-05-12 British Tabulating Mach Co Ltd Printing mechanisms
US2799221A (en) * 1955-09-02 1957-07-16 Olivetti Corp Of America Printing mechanism
US2915968A (en) * 1958-10-30 1959-12-08 Clary Corp Printer
US3023698A (en) * 1958-12-16 1962-03-06 Nat Dairy Prod Corp Marking apparatus
US2910936A (en) * 1959-01-19 1959-11-03 Clary Corp Printer mechanism

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618513A (en) * 1968-12-20 1971-11-09 Olympia Werke Ag Printing mechanism including resiliently biased rotatable-type wheels
US3683800A (en) * 1969-06-27 1972-08-15 Olivetti & Co Spa Serial printing mechanism
US3835770A (en) * 1970-02-27 1974-09-17 Suwa Seikosha Kk Compact flying printer
US3949664A (en) * 1970-02-27 1976-04-13 Kabushiki Kaisha Suwa Seikosha Compact flying printer
USRE28796E (en) * 1970-02-27 1976-05-04 Kabushiki Kaisha Suwa Seikosha Compact flying printer
US3844396A (en) * 1972-02-02 1974-10-29 Bio Logics Products Printing upon and encoding identification devices
FR2279552A1 (fr) * 1974-07-25 1976-02-20 Addmaster Corp Imprimante a compression pour papiers ou piles de papier de differentes epaisseurs
US3954054A (en) * 1974-07-25 1976-05-04 Addmaster Corporation Squeeze printer for papers or stacks of papers of varying thicknesses
US3967550A (en) * 1974-07-25 1976-07-06 Addmaster Corporation Squeeze printer for papers or stacks of papers of varying thicknesses
US4335651A (en) * 1979-08-07 1982-06-22 Postalia Gmbh Setting device for denominations in franking and value stamping machines
US4780007A (en) * 1987-06-29 1988-10-25 Ncr Corporation Record media thickness compensating mechanism
US4979835A (en) * 1987-09-09 1990-12-25 Mannesmann Aktiengesellschaft Parallel setting device for a print head slide support guide

Also Published As

Publication number Publication date
CH455351A (de) 1968-07-15
NL6713281A (de) 1968-05-06
GB1186260A (en) 1970-04-02
DE1524472B1 (de) 1970-06-25

Similar Documents

Publication Publication Date Title
US2919002A (en) Selection mechanism for a single printing element typewriter
US3613857A (en) Ribbon transporting and shifting mechanism
US2926602A (en) Automatic printer
US3261284A (en) Non-impact electrostatic printer
US2672092A (en) Ink ribbon feeding and ink ribbon positioning mechanism for printing machines
US3378127A (en) Data printer with flexible print wheel
US3310147A (en) Wheel striking data printer
US3482511A (en) Printing arrangement with tabulated printing cylinder
FI59557B (fi) Speciellt foer prismaerkningsmaskiner avsett tryckverk
US2935935A (en) Printing mechanism
US3364852A (en) High-speed print drum with traveling print hammer
US3750794A (en) High speed print drum with traveling print hammer
US3304859A (en) Ribbon-displacing device for the printing mechanism of calculating machines and the like
US3253539A (en) Driving and supporting means for high speed printing drum
US3313390A (en) Printing machine incorporating spacedfont print roll, and method of printing
US2981179A (en) Printer
US3306191A (en) High speed printer
US2688916A (en) Statistical machine
US2798429A (en) Re-inking mechanism for cash registers
US3907094A (en) Ribbon feeding and reversing mechanism
US2935934A (en) Printing mechanisms
US3618513A (en) Printing mechanism including resiliently biased rotatable-type wheels
US3721186A (en) Rockable impression device for a printing machine
US2116214A (en) Printing mechanism for cash registers
US2997542A (en) High speed tele-printer