US3313390A - Printing machine incorporating spacedfont print roll, and method of printing - Google Patents

Printing machine incorporating spacedfont print roll, and method of printing Download PDF

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Publication number
US3313390A
US3313390A US426034A US42603465A US3313390A US 3313390 A US3313390 A US 3313390A US 426034 A US426034 A US 426034A US 42603465 A US42603465 A US 42603465A US 3313390 A US3313390 A US 3313390A
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US
United States
Prior art keywords
paper
characters
print roll
printing
line
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
US426034A
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English (en)
Inventor
Robert H Curtiss
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.)
Anelex Corp
Original Assignee
Anelex Corp
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 Anelex Corp filed Critical Anelex Corp
Priority to US426034A priority Critical patent/US3313390A/en
Priority to GB45126/65A priority patent/GB1118173A/en
Priority to FR46509A priority patent/FR1459411A/fr
Application granted granted Critical
Publication of US3313390A publication Critical patent/US3313390A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/32—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being parallel to the axis of rotation, e.g. with type on the periphery of cylindrical carriers
    • B41J1/44—Carriers stationary for impression
    • B41J1/46—Types or dies fixed on wheel, drum, cylinder, or like carriers
    • 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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/26—Ink-ribbon shields or backings

Definitions

  • the invention particularly relates to the type of high-speed printer which has a cylindrical print roll bearing a series of circumferentially-extending type fonts upon the roll surface, one font being conventionally provided for each vertical column of characters to be printed.
  • the paper which is to be printed is fed tangentially to the roll, and each of a plurality of hammers cooperates with one of the type fonts.
  • Means for sensing the angular position of the roll serve to compare the characters passing through a printing station with pre-registered printing information, and to actuate the hammers to impact the paper against a selected character as that character passes through the printing station. In this way, a full line of print is completed during a single uninterrupted revolution of the print roll; the paper is then advanced by a feeding mechanism for the printing of a succeeding line.
  • Another disadvantage arising from the close-packed spacing of the characters is a tendency to produce ghost impressions of characters adjacent to the character being printed. If the paper has any substantial stiffness, the impact of a hammer required to imprint the selected character tends to press the paper in the adjoining column spa es against their corresponding fonts with sufiicient force to produce a smudge or partial impression.
  • I may carry out my improved method by first preparing a print roll with a series of circumferential type fonts, and spacing the type fonts apart axially on the roll surface with a separation of one of more character widths, so that an intervening series of spaces are blank. These blank areas are preferably of a reduced diameter to avoid contact with the paper. In this way, the impaction of the paper against the type does not cause any adjacent areas of the paper to contact any portion of the roll, and multiple ghost impressions are avoided.
  • This operation completes only a portion of a line of print, as it imprints characters only in those columns 3,313,390 Patented Apr. 11, 1967 which confront the spaced-apart fonts.
  • the print roll and hammer mechanisms may be reciprocated by mounting them in a common reciprocable carriage, as it is only necessary to bring about a relative shifting movement between the print roll and paper.
  • reciprocation is effected by means of a pair of opposed solenoids acting upon a common armature, which has pivotal driving connection with the paper-feed shaft, or directly with the tractors.
  • the tractors are driven rotatably by conventional means such as a pulley, which may have a sliding connection with the paper-feed shaft if the shaft itself is to be reciprocable.
  • the print roll is rotatably mounted in a stationary locus, and a number of hammer mechanisms are mounted in positions to impact the spaced type fonts at a printing station where the paper passes in tangential relation to the print roll.
  • the improved method and mechanism requires a plurality of rotations of the print roll to complete a single line of printing, and consequently prints at a fundamentally lower rate than a conventional roll printer
  • the smaller number of hammer mechanisms, the increased lateral spacing between them, and the reduced number of type fonts required greatly reduce the complexity and cost of the mechanism and facilitate maintenance, as well as providing an improved quality of printing by overcoming the problem of multiple ghost impressions by adjacent type fonts.
  • FIG. 1 is a schematic view showing the relationship between elements of a preferred embodiment of the invention in a printing machine
  • FIG. 2 is a fragmentary view in front elevation.
  • the improved printing machine incorporates a print roll 10 having a series of circumferential type fonts 12, which are spaced apart axially of the roll by intervening blank areas 14.
  • the widths of the blank areas and fonts are each equal to a single column of print, so that a full line is printed during two rotations of the print roll and one intermediate relative shifting of the paper 16.
  • the width of the areas 14 may be any desired multiple of the column width; a corresponding number of repetitions of the printing and shifting operations would be required.
  • the diameter of the blank areas is somewhat less than that of the type fonts, in order to reduce to a minimum the opportunity for the paper to receive a ghost impression by impacting any surface other than that of the type characters being printed.
  • the roll may be prepared by turning or grinding processes, followed by etching of the type fonts, or in any other conventional manner.
  • the print roll is rotated at a constant speed by suitable motive means (not shown) through a belt 17 and pulley 18, and is rotatably mounted in frame members 20, 22 upon a shaft 24.
  • Sensing of the rotary position of the roll is attained in a conventional manner by affixing a code wheel 26 on the shaft, and mounting sensing elements in a frame member 28 for detecting the roll position and transmitting this information to suitable control apparatus (not shown).
  • the sensing element may comprise a lamp 3% and a photoelectric cell 32, for cooperation with holes punched in the code disc to identify each character of the type font by a binary code; however, this apparatus in itself forms no part of the present invention and will not be described in detail.
  • a series of hammers 34 are mounted in actuating modules 36, each in tangential relation to one of the type fonts 12, and are actuated by the control apparatus upon agreement of pre-registered printing infonnation with the arrival of the desired characters at the printing station.
  • Printing is performed by impressing the paper 16 and an inked ribbon 38 against the print roll.
  • the inked ribbon is carried in tangential relation to the print roll by guides 40, 42.
  • the paper is fed in intermittent steps to the printing station for the printing of successive lines, by a pair of tractors 44 having pins 46 engageable in mating openings 47 punched in the longitudinal edges of the paper.
  • the tractors are fixed on a splined shaft 48 by means of manual clamping devices 50, and the entire shaft is reciprocate-d in the direction of the printed lines for printing of alternate groups of characters.
  • the shaft may be permitted to remain axially stationary if the tractors are slidably mounted on the shaft for reciprocation by other means.
  • the splined paper-feed shaft 48 is supported for axial and rotational movement by means of a ball bushing 52 and a splined pulley 54.
  • the ball bushing is mounted in a frame element 56 and slidably and rotatably receives a shaft bushing 58, while the splined pulley 54 is axially located and rotatably supported in a frame member 58 by bearings 60 mounted in a housing 62.
  • Intermittent feeding of the paper to print successive lines is performed by driving the pulley 54 through-a belt 64, a jack-shaft 78, a combination clutch and brake 66, and a belt 68 drivingly connected with suitable motive means (not shown).
  • the clutch-brake 66 is preferably of an electro-magnetic type adapted alternatively to drive or to brake the tractors, and is energized through leads 70 by suitable control apparatus (not shown) to advance the paper for printing successive lines according to a predetermined format.
  • the format is established by a pre-punched tape 72, driven by the jack-shaft.
  • Brushes 74 supply format information to the control apparatus.
  • a counting disc 76 is also mounted on the drive shaft 78, for cooperation with an impulse generator 80 to supply the control apparatus with information as to the precise extent of feeding movement of the paper; this information is used to reverse the energization of the clutch-brake 66 for halting the paper in precise position for printing each successive line.
  • the control apparatus is arranged to advance the paper only subsequent to completion of the printing of each line of characters.
  • Reciprocation of the tractors 44 and the spline shaft 48 is brought about under the direction of the control apparatus by means of a double solenoid actuating device 82, in which coils 83, 84 are alternatively energized to actuate a pivotally-mounte-d armature 86 as shown by the arrow.
  • the alternate terminal positions of the armature are defined by threaded stops 88, for the precise location of the paper in alternate columnar relationship to the print roll.
  • the armature terminates in a pivotal connection at 90 with a recessed portion 92 of the shaft bushing 58.
  • the clutch-brake 66 and the solenoid actuator 82 are energized to hold the paper in this position, as the print roll rotates through a revolution and the hammers 34 are actuated by the control apparatus to imprint selected characters in these columns.
  • the armature 86 is then actuated by a reversal of the previous energization of the coils 83, 84, to shift the splined shaft 48, the tractors and the paper, so as to position the even-numbered alternate columns in confrontation with the type fonts 12.
  • the printing of the remainder of the line is then concluded by a further revolution of the print roll and appropriate actuations of the hammers 34 to print the selected characters in these columns.
  • the energization of the clutch-brake 66 is reversed to rotate the splined shaft and tractors to drive the paper forwardly and position it for the printing of a subsequent line.
  • the paper feeding movement is terminated by renewed braking action under the direction of the control tape 72 and counting disc 76.
  • the even-numbered columns of the paper remain opposed to the type fonts; these columns are printed in a first operation of the print roll and hammers, after which the armature 86 is reversed to return the tractor and papers to their original lateral position, for printing the odd-numbered columns in this second line.
  • the printing of each complete line entails two printing revolutions of the print roll, and one shifting movement of the tractors and paper either to the left or the right, depending upon the location of the paper at the commencement of that printing operation.
  • the relative lateral shifting movement of the paper with respect to the print roll and hammers may be carried out either by moving the paper tractors, or by moving the print roll and hammers as a unit, with respect to the machine frame.
  • the type fonts may be interspersed with blank areas whose width is any multiple of the column width, although in the form shown the blank areas are of a single column width.
  • the number of printing operations required to complete each line depends upon the number of columnar widths between adjacent fonts. I intend to define the invention in the appended claims without limitation to details of the illustrated embodiment and mode of practice of the invention.
  • a printing machine comprising:
  • tractor means for feeding paper longitudinally in intermittent steps to a printing station for the printing of successive lines and for holding the paper stationary during the printing of each line;
  • a print roll rotatably mounted on an axis extending parallel to the direction of the lines to be printed, said roll being tangential to the paper at said printing station, and having a plurality of circumferential type fonts spaced apart axially thereof at intervals of one or more character widths by intermediate blank areas on the print roll;
  • a plurality of movable hammer means each operatively opposed to one of said fonts and correspondingly spaced apart axially of said print roll, each for imprinting selected characters by impressing the paper against a corresponding one of said fonts as a selected character passes said printing station during rotation of said print roll;
  • said means for reciprocating said tractor means comprises a reversible electro-magnetic actuator including a pivotally-supported armature having pivotal driving connection with said shaft for reversible axial displacement thereof.

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US426034A 1965-01-18 1965-01-18 Printing machine incorporating spacedfont print roll, and method of printing Expired - Lifetime US3313390A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US426034A US3313390A (en) 1965-01-18 1965-01-18 Printing machine incorporating spacedfont print roll, and method of printing
GB45126/65A GB1118173A (en) 1965-01-18 1965-10-25 Improved method of printing and apparatus for same
FR46509A FR1459411A (fr) 1965-01-18 1965-10-25 Perfectionnements aux procédés et machines d'impression à l'aide d'un rouleau portecaractères tournant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US426034A US3313390A (en) 1965-01-18 1965-01-18 Printing machine incorporating spacedfont print roll, and method of printing

Publications (1)

Publication Number Publication Date
US3313390A true US3313390A (en) 1967-04-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
US426034A Expired - Lifetime US3313390A (en) 1965-01-18 1965-01-18 Printing machine incorporating spacedfont print roll, and method of printing

Country Status (3)

Country Link
US (1) US3313390A (fr)
FR (1) FR1459411A (fr)
GB (1) GB1118173A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402657A (en) * 1965-11-24 1968-09-24 Potter Instrument Co Inc High speed belt printer with printing slug supporting means
US3701318A (en) * 1970-04-15 1972-10-31 Mohawk Data Sciences Corp Skew control apparatus for feeding a wide-web ribbon in a high speed printer
US3818773A (en) * 1973-07-11 1974-06-25 Suua Seikosha Kk Motion transforming mechanism
USRE28897E (en) * 1973-07-11 1976-07-13 Kabushiki Kaisha Suwa Seikosha Motion transforming mechanism
US3987884A (en) * 1970-07-16 1976-10-26 Edward J. Buxton Printing apparatus with paper positioning tractor means and escapement means

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457772A1 (fr) * 1979-05-31 1980-12-26 Enertec Dispositif d'impression a deplacement transversal relatif d'une tete d'impression et d'un support d'impression applique sur un rouleau
JPS58145469A (ja) * 1982-02-24 1983-08-30 Sony Corp プリンタ

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2080649A (en) * 1937-05-18 Recording machine
US2746304A (en) * 1951-06-28 1956-05-22 Nat Registrier Kassen Augsburg Record material carriage shifting means for calculating machines
US2776618A (en) * 1953-06-11 1957-01-08 Hughes Aircraft Co Printing cylinders for high-speed printing systems
US2815843A (en) * 1955-11-02 1957-12-10 Jr James E Bellinger Automatic format for code operated writing machines
US2851267A (en) * 1954-01-21 1958-09-09 Standard Register Co Strip feeding device
US2897940A (en) * 1947-08-23 1959-08-04 Graphic Arts Res Foundation In Carriage shifting device
US3091387A (en) * 1961-05-31 1963-05-28 Sperry Rand Corp Carriage programming system
US3128693A (en) * 1961-06-09 1964-04-14 Potter Instrument Co Inc High speed printer drum
US3157115A (en) * 1962-12-03 1964-11-17 Soroban Engineering Inc Printing mechanism
US3167002A (en) * 1962-06-06 1965-01-26 Nippon Electric Co High-speed printing apparatus in computer systems
US3169473A (en) * 1962-09-10 1965-02-16 Sperry Rand Corp Type carrier for printing machine
US3207067A (en) * 1962-08-21 1965-09-21 Sperry Rand Corp Type carrier for high speed printing mechanism

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2080649A (en) * 1937-05-18 Recording machine
US2897940A (en) * 1947-08-23 1959-08-04 Graphic Arts Res Foundation In Carriage shifting device
US2746304A (en) * 1951-06-28 1956-05-22 Nat Registrier Kassen Augsburg Record material carriage shifting means for calculating machines
US2776618A (en) * 1953-06-11 1957-01-08 Hughes Aircraft Co Printing cylinders for high-speed printing systems
US2851267A (en) * 1954-01-21 1958-09-09 Standard Register Co Strip feeding device
US2815843A (en) * 1955-11-02 1957-12-10 Jr James E Bellinger Automatic format for code operated writing machines
US3091387A (en) * 1961-05-31 1963-05-28 Sperry Rand Corp Carriage programming system
US3128693A (en) * 1961-06-09 1964-04-14 Potter Instrument Co Inc High speed printer drum
US3167002A (en) * 1962-06-06 1965-01-26 Nippon Electric Co High-speed printing apparatus in computer systems
US3207067A (en) * 1962-08-21 1965-09-21 Sperry Rand Corp Type carrier for high speed printing mechanism
US3169473A (en) * 1962-09-10 1965-02-16 Sperry Rand Corp Type carrier for printing machine
US3157115A (en) * 1962-12-03 1964-11-17 Soroban Engineering Inc Printing mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402657A (en) * 1965-11-24 1968-09-24 Potter Instrument Co Inc High speed belt printer with printing slug supporting means
US3701318A (en) * 1970-04-15 1972-10-31 Mohawk Data Sciences Corp Skew control apparatus for feeding a wide-web ribbon in a high speed printer
US3987884A (en) * 1970-07-16 1976-10-26 Edward J. Buxton Printing apparatus with paper positioning tractor means and escapement means
US3818773A (en) * 1973-07-11 1974-06-25 Suua Seikosha Kk Motion transforming mechanism
USRE28897E (en) * 1973-07-11 1976-07-13 Kabushiki Kaisha Suwa Seikosha Motion transforming mechanism

Also Published As

Publication number Publication date
GB1118173A (en) 1968-06-26
FR1459411A (fr) 1966-11-18

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