US3308749A - Print impression control for specially configured type elements - Google Patents

Print impression control for specially configured type elements Download PDF

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Publication number
US3308749A
US3308749A US458336A US45833665A US3308749A US 3308749 A US3308749 A US 3308749A US 458336 A US458336 A US 458336A US 45833665 A US45833665 A US 45833665A US 3308749 A US3308749 A US 3308749A
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US
United States
Prior art keywords
type
character
type element
hammer
print
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
US458336A
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English (en)
Inventor
Albert A Dowd
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.)
International Business Machines Corp
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International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Priority to US458336A priority Critical patent/US3308749A/en
Priority to DEP1270A priority patent/DE1270857B/de
Priority to GB19175/66A priority patent/GB1082747A/en
Priority to BE680825D priority patent/BE680825A/xx
Priority to FR7816A priority patent/FR1480734A/fr
Priority to NL666606919A priority patent/NL149618B/xx
Priority to ES0327040A priority patent/ES327040A1/es
Priority to SE07060/66A priority patent/SE328314B/xx
Priority to CH759866A priority patent/CH435819A/de
Application granted granted Critical
Publication of US3308749A publication Critical patent/US3308749A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/26—Means for operating hammers to effect impression
    • 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
    • B41J1/08—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies carried on sliding bars or rods
    • B41J1/12—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies carried on sliding bars or rods on side surfaces thereof, e.g. fixed thereto
    • B41J1/14—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies carried on sliding bars or rods on side surfaces thereof, e.g. fixed thereto the types or dies being movable relative to the bars or rods
    • 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
    • B41J1/16—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies arranged in stationary or sliding cases or frames or upon flexible strips, plates, bars or rods

Definitions

  • the present invention has application to printing characters with magnetic ink, whereby data can be printed on record forms such as checks or the like which are adapted to be sensed by magnetic pickup devices to control mechanisms for handling the forms.
  • the problem stems from the fact that the 15-1313 characters vary considerably in impression surface area and the surface area within certain characters is nonsymmetrically distributed.
  • the major method of adjusting the impact force level in proportion to the surface area of the type becomes unduly complex in high speed impact printers where any of the printing hammers may be required to print any of the E-13B characters.
  • mere change in impact force level results in non-uniform impression density or embossing outside the standards established by the banking industry.
  • the principle of the present invention whereby the above as well as other objects may be attained, involves distributing the print force applied to the type so that the type element impacts the print medium with an impact force gradient which corresponds to the surface area distribution of the character formed on the type element.
  • the principle of the present invention whereby the above, as well as other objects may be attained, involving causing a type element to impact a print medium in such a manner that the region of the type character thereon having a greater surface area impacts with a heavier force than a region with a lesser surface area.
  • the type face impacts the print medium with a force gradient which corresponds with the surface area distribution of the character thereon. This is accomplished in accordance with the practice of this invention by causing the portion of the type element having the greater area of type surface to strike ahead of the lesser area portion.
  • the above principles are incorporated in a high speed printer comprising a horizontal type bar which reciprocates across a print medium.
  • the type bar comprises plural fiat spring type elements having one end fixed to a carrier bar with the free or distal end of the spring element bearing on a type character which is to be impacted against a print medium.
  • a plurality of hammers arranged in a row parallel with the type bar strike the rear surfaces of the type elements in the regions behind the engraved characters, thereby deflecting the free ends of the spring type elements and impacting the embossed characters against the ribbon and the print medium, which is backed up by a platen.
  • the rear surface of the print type element immediately behind the embossed character which is adapted to be impacted by a print hammer for the purpose of driving the raised type character against the print medium is inclined relative to the striking surface of the hammer so as to leave a high portion of the type element behind the maximum area portion of the character.
  • this means that the rear surface on the spring element is inclined from back to front in a right to left direction to compensate for the area portion of the vertical leg of the numeral 7 at the right side of the type element, while it is also inclined from top to bottom in a direction from back to front, to compensate for the unbalanced upper bar area portion of the El3B numeral 7, thus giving a compound rear surface to the spring type element.
  • This surface when struck by a print hammer having a face parallel to the surface of the type character, causes the spring character bearing element to deflect with a compound motion so that the vertical leg and the upper leg portion strike the print medium ahead of and with greater force than the rest of the type.
  • FIG. 1 is an isometric or perspective view in part of a bar printer showing the general arrangement of the type elements, print medium, platen and type ribbon;
  • FIG. 2 is an enlarged side elevation of the platen, print medium, ribbon, type element, type hammer and operating mechanisms thereof used in the printer of FIG. 1;
  • FIGS. 3a, 3b and 3c are fragmentary top plan views to enlarged scale of a type element, a portion of a hammer, a print medium and a portion of the platen to an exaggerated scale showing the action of the print element during transit after having been struck by the hammer up till the time it impacts the print medium;
  • FIGS. 4a, 4b, 5a, 5b, and 6a, 6b are plan views of type elements with a portion of a type hammer, together with corresponding front elevation showing different arrangements of lateral incline or taper;
  • FIGS. 7, 8 and 9 are left-hand, rear and right-hand views of a portion of a type element showing the arrangement of the tapers in two directions;
  • FIG. is an enlarged isometric partial view of the top portion of a type element.
  • FIGS. 11a, 11b and 110 are enlarged side elevations of a print element showing the element in the free position, an intermediate position, and the impacting position, drawn to an exaggerated scale to illustrate the fiexing action of the spring finger.
  • the reference numeral 10 denotes generally a portion of a printer mechanism which includes a print roll 12 mounted on a shaft 14, and having platen inserts 16 for backing up a print medium 18 associated with a vertically movable ribbon 20, both the print medium and the ribbon being advanced in any suitable manner.
  • a plurality of uniformly spaced print hammers 22 is arranged in a linear array along a print line, one hammer being located at each of a plurality of print positions. While various forms of hammers may be used and various assemblies and operators employed to obtain the operation of the hammers at the various print positions, the preferred print hammer mechanism takes the form described in United States patent application of Roland D. Nelson and Donald K. Rex, Ser. No.
  • each hammer comprises a body portion 24, having a slot 26, whereby the hammers are pivotally mounted on a common stationary support rod 28.
  • the hammer mechanisms 22 further include a striking arm 30 extending outward-1y from the central body portion at the top and a firing arm or tail portion 32 extending below the body portion 24 and slightly to the rear thereof.
  • each hammer 22 in the preferred version of a hammer operator mechanism is provided with an individual holding magnet 33 haying suitable energizing means such as a .winding 35.
  • a return spring 37 is attached at one end to a stationary support 38 and has its free end in biasing contact with the body portion 22 at the edge surface above the pivot rod 28;
  • the hammer firing mechanism of the aforesaid application includes a cantilever leaf spring 40 for each hamrner, each spring being mounted on a bail 42 which is pivotally suspended from a shaft 43 on one or more spaced arms 45.
  • Each spring drive 40 is made up of a number of leaves 40a, 48b, 40c and 40d of progressively decreasing lengths.
  • the drive mechanism includes a spring reset assembly made up of a spring stop bail 46 pivotally mounted on shaft 43 by means of an arm 48.
  • Each hammer firing mechanism is operated by one or more pairs of cams 49 and 50 which are keyed in an appropriate manner to a rotatable shaft 52.
  • FIG. 2 shows a hammer firing mechanism for single hammer 22, it is of course understood that the same firing mechanism wouid be supplied for each of the hammers 22 of the printer apparatus of FIG. 1.
  • the various shafts 43 and 52 may be mounted on a common support frame which supports the hammer mechanisms 22, the platen and the return spring 37 of the printer apparatus of FIG. 1.
  • a type carrier device Positioned between the print hammers 22 and the type ribbon 20 is a type carrier device comprising a plurality of spring leaf type elements 69 removably mounted on a horizontal reciprocating type element support tube 61.
  • Each of the type elements 60 includes a base mounting portion 62 disposed to be inserted in the support tube 61 and held by spring 62b and a plurality of coplanar fiat integral spring finger extensions 63 having type characters (not shown) formed on front faces at the distal or free ends thereof.
  • each type hearing finger 63 of 'type element 60 has a type character thereon comprising a different one of the numerals 0-9 and one or more special characters used in the E-13B printing.
  • El3l3 segments are used every fourth segments along a tube containing twelve segments.
  • the fourteen character E-l3B segments may be inserted in each of nine positions in a fourteen character type bar.
  • a complete arrangement of E-13B characters is provided for printing by assembling plural type elements 60, Le, segments, in a releasable manner by spring 62b on support tube 61 so that each type segment 60 is individually removable and replaceable in the assembly.
  • type elements 60 are moved horizontally past the array of hammers 22 and the various hammers are selectively operated to strike appropriate type characters at predetermined positions under the control of means which mightinclude memory devices or the like (not shown).
  • Bail 46 positions spring 46 so that they may slide up along side of tail 32. Then bail 46 retracts to positions shown. Bail 42 does two things. It causes vertical displacement of the type of spring 40 and it loads the spring. Shaft 52 stops in position ready for firing when follower 53 is on a high dwell and follower 55 is on a low dwell. The rotation of shaft 52 clockwise first causes cams 49 and 50 to assume a position which causes follower 55 to drop arm 48 causing bail 46 to assume theretracted position shown. Then arm 48 raises and moves bail 46 to the right.
  • cam follower 53 raises arm 45 and bail 42 upwardly, so that spring 46a moves vertically and engages the right side of extension 32 of hammer 22.
  • winding 35 holding magnet 33 energized hammer 22 is subjected to a clockwise force caused by the deflection of spring 40a as it is brought to bear on extension 32 through the rotation of the cams by shaft 52.
  • the current in coil 35 may be switched off and the control magnet .33 releases hammer 22. Due to the force applied to the extension 32 by spring 40a, hammer 22 pivots about shaft 28.
  • the tip of the spring 40a slides off the lower tip of the firing arm 32 as shown in FIG. 2 and comes to rest against the spring stop bail 46.
  • the acceleration given to the hammer 22 causes it to continue in its clockwise movement until it strikes the type finger 63 and forces the type against the ink ribbon 20, the print medium 18 and the platen 16.
  • Hammer 22 then rebounds away from platen 16 in a counterclockwise direction toward the holding magnet 33
  • the hammer return spring 37 hearing against the upwardly extending flange of body portion 24 acts to hold the hammer after rebound in cooperation with the magnet 33.
  • the horizontal motion of the type carrier which brings the various type fingers 63 into the various print positions may be provided by a rack and pinion gear arrangement which includes a pinion gear 64 connected in a suitable manner to any well known reversible drive member (not shown) and a rack gear 65 which is attached to the underside proximate one end of the support tube 61;
  • a flag member 66 attched to the upper side of tube support member 61 moves through a detector means 67 which may comprise suitable photoelectric sensing devices or the like, which through suitable control means connected to the pinion gear drive, limits the stroke of the support tube 61 and reverses its drive current as necessary.
  • Printing by operation of the hammers 22 to strike the type fingers 63 of type element 60 may be performed at rest or on-the-fiy.
  • type carriers 60 move into position so that each type finger is aligned with a different hammer 22 and then stopped. Hammer 22 is fired, then the type carrier moves the type elements 60 to the next horizontal position, aligning each of the type fingers 63 at the next adjacent hammer position. The process is repeated for the full length of the print line.
  • the tube support member 61 is moved without intermediate interruption across the entire length of the stroke parallel to the print medium 18.
  • each of the type elements or segments 60 is a flat spring leaf member having a common base portion 62 from which a plurality of integral deflectable type fingers 63 extend in a common plane with each other and the base portion 62.
  • the base portion 62 comprises a single mounting extension insertable into a longitudinal slot in the support tube 61.
  • the mounting extension is provided with a central dovetail shaped slot 62:! disposed to be engaged by cooperating fingers of spring clip 62]; mounted in the support tube.
  • the individual type elements 60 may thus be snapped into place in their respective slots in the support tube 61 and likewise may be readily removed for repair or maintenance purposes or for setting up a different configuration of type.
  • FIGS. 3a through 30 it will be seen that in FIG. 3a the striking arm 30 of a print hammer 22 is making its initial contact with the rear side of a spring leaf type element 63 which has on its front face an embossed type character 63a. As shown, the rear face of the type elements 63 is beveled or inclined, the portion to the left being removed to provide a rear surface inclined from the rear right toward the front left, so that the striking arm 30 engages the righthand portion of the type element 63 initially. Referring to FIG. 3b, the striking arm 30 is shown in an intermediate position carrying the upper end of the type element 63 with it as it moves toward the print medium.
  • the type element 63 is shown as twisted so that the rear inclined face is now parallel with the front face of the striking arm 30, and the forward surface of the type character 63a is now inclined backwardly from right to left so that the right-hand portion is ahead of the left-hand side.
  • the character 63a strikes the print medium in the position forcing the ribbon 20 and print medium 18 against the platen 16 so that a greater striking force is exerted at the righthand edge of the character to compensate for the greater resistance encountered thereby, t-hus balancing the imprint made by the type character on the print medium 18.
  • the rear surface of the type element 16 shown is provided with a evel or incline in the vertical direction as well as one from side to side. This is representative of the E13B numeral 7 as shown in FIGS.
  • the vertical section of the numeral 7 is seen to be on the righthand side of the type element, and presents a major portion of the character print area; and the vertical bar of the numeral 7 presents another major area portion of the type element at the top.
  • the first quadrant thus contains the maximum character area, and lesser portions occur in the second and fourth quadrants.
  • FIGS. 52: and 5b there is shown a representation of the E-13B numeral 8 which is more or less symmetrical, and in which case the rear face of the type element 63 is parallel to the front face of the character 63a.
  • the vertical distribution is bottom-heavy. Therefore, this character could have a top to bottom incline with the incline running toward the rear as we go from bottom to top.
  • FIGS. 4a and 4b are shown the plan and elevational views of a type element 63 hearing the E-13B, or special character 88-4 in which the two rectangular portions to the left have equal areas sub stantially larger than that of the rectangular portion to the right. This provides a generally reverse condition from that encountered with the numeral 7 in FIGS.
  • FIGS. 7, 8 and 9 there are shown lefthand, rear and right-hand elevations of a portion of a type element 63 corresponding to the type element shown in FIGS. 3c23c which carry the E-13B numeral 7 on the face thereof.
  • the rear face of the print member 63 is inclined to the vertical, material being removed from the lower portion of the rear face immediately behind the character, so that the rear face slopes toward the front from the top downwardly, while at the same time having a transverse bevel or incline so that in FIG. 7 the rear surface is inclined from the surface into the paper toward the right, and in FIG. 8 the dotted line 630 designates the same incline in the lateral direction.
  • FIG. 10 is an isometric or perspective view of the type element 63 of FIGS. 7, 8 and 9 showing the compound incline of the rear surface engaged by the striking bar 30 in both the vertical and horizontaldirections.
  • An inclination in the order of 15 has been found to be effective both vertically and transversely in the case of the numeral 7, for example.
  • FIGS. 11a, 11b and 11c these three figures may be considered in connection with the corresponding FIGURES 3a, 3b and 30 for showing the reaction of a print element having both vertical and transverse inclination of the rear surface to compensate for an asymmetric type character 63a.
  • FIGS. 11a and 3a it will be seen that in the initial position of the type element 63, the front of spring finger type element 63 is as shown in FIG. 3a parallel to the print medium 18 and in FIG. 11a edgewise or perpendicular to the plane of the paper.
  • the rear surface of the finger 63 immediately behind the character 63a is inclined a forward direction from right to left as is shown by the dotted line 630 in FIG. 11a.
  • the rear face of the finger 63 is inclined in the vertical direction, the lower end being further forward so that the rear face slopes upwardly toward the end of the finger.
  • FIG. 11a in which it may be seen that the rear surface of the finger behind the character is inclined relative to the left-hand side or rear surface of the finger 63 generally. This is shown in FIG. 3a by the dotted line 6312.
  • the character 63a is impacted against the print medium With the right-hand edge leading, as shown in FIG. 3c, and as this is the location of principal character area, it meets with the most resistance in imprinting on the print medium, so that the face of the character 63a tends to return to a position more nearly parallel to the print medium during the actual typing operation. Referring to FIG. 3c, and as this is the location of principal character area, it meets with the most resistance in imprinting on the print medium, so that the face of the character 63a tends to return to a position more nearly parallel to the print medium during the actual typing operation. Referring to FIG.
  • Embossing which is critical in connection with the -E-13B printing, where no more than .001" embossing is permitted, may be readily controlled.
  • a modification of the impact surface at the rear of the type character tends to distribute the pressure more uniformly, since the flexible type finger tends to conform to the surface of the hammer striking it. In some characters there is a greater area at the top than at the bottom; in others, there is a greater area to the right or to the left.
  • the back of the finger is inclined so as to be depressed by grinding or otherwise removing material from the back of the finger in the region of least character area. While we have shown the finger modification as applied to the back of a finger, it
  • i may also be applied to the type face, in which case the face of the type is modified so that the portion of greater area protrudes slightly further toward the print medium than that of the lesser area.
  • a printer apparatus comprising a platen, a type element movably :mounted proximate said platen, said type element having a front surface for impacting a record medium against said platen,
  • said type element having on said front of said type element a raised character the surface of which lies in a plane generally parallel with said platen surface, said character surface having an asymmetrical distribution on said front surface of said type element,
  • said type element having a rear surface adapted to be struck for moving said type element to impact said platen
  • said inclination being related to the surface distribution of said character
  • said impacting means having an impacting surface parallel with the plane of said character surface.
  • a printer apparatus comprising a platen having a surface engageable by a type element
  • said type element having a raised character on one side facing said platen
  • said raised character having an impression surface engageable with said platen to cause impressions to be made
  • impression surface being asymmetrically distributed over said side of said type element
  • said hammer having a surface engageable with said second surface of said type element, one of the engaging surfaces of said platen, said type element, and said hammer element being inclined at an angle relative to the direction of motion of said type element and to said other engaging surfaces, said inclination causing said impression surface of said type element to engage said platen with a force distribution corresponding with the distribution of said impression surface of said raised character.
  • said one inclined surface is said second surface on said type element, said inclined surface causing said type element to be turned at an angle relative to the direction of motion whereby said character impression surface engages said platen with a force distribution corresponding with the distribution of said impression surface on said type element.
  • the combination in accordance with claim 10 in which said one inclined surface is said second surface on said type element, said inclined surface causing said type element to be turned by said hammer to cause the region of maximum character surface area to engage said platen with greater force than said region of minimum surface area.
  • said type element is a spring leaf type element having one end fixed to a type carrier and the distal end displaceable on contact by said print hammer toward said platen,
  • said raised character being on one side of said spring leaf proximate said distal end thereof
  • said second surface behind said raised character is inclined to effect a twisting and bending of said spring leaf at said distal end upon displacement by said hammer in accordance with the asymmetrical distribution of said impression surface.
  • said type element is a spring leaf type element having one end fixed to a type carrier and the distal end displaceable by said print hammer toward said platen
  • said raised character being on one side of said spring leaf proximate said distal end thereof
  • said second surface behind said raised character is inclined for effecting a twisting of said spring leaf at said distal end upon displacement by said hammer in accordance with the asymmetrical distribution of said impression surface.

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  • Impression-Transfer Materials And Handling Thereof (AREA)
US458336A 1965-05-24 1965-05-24 Print impression control for specially configured type elements Expired - Lifetime US3308749A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US458336A US3308749A (en) 1965-05-24 1965-05-24 Print impression control for specially configured type elements
DEP1270A DE1270857B (de) 1965-05-24 1966-02-16 Druckwerk
GB19175/66A GB1082747A (en) 1965-05-24 1966-05-02 Improvements in printers
FR7816A FR1480734A (fr) 1965-05-24 1966-05-10 Dispositif de contrôle d'impression de caractères
BE680825D BE680825A (de) 1965-05-24 1966-05-10
NL666606919A NL149618B (nl) 1965-05-24 1966-05-20 Drukinrichting voor afdrukken van afzonderlijke typen met gelijkmatige afdrukkracht.
ES0327040A ES327040A1 (es) 1965-05-24 1966-05-23 Una maquina de escribir.
SE07060/66A SE328314B (de) 1965-05-24 1966-05-24
CH759866A CH435819A (de) 1965-05-24 1966-05-24 Druckapparat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US458336A US3308749A (en) 1965-05-24 1965-05-24 Print impression control for specially configured type elements

Publications (1)

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US3308749A true US3308749A (en) 1967-03-14

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ID=23820397

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Application Number Title Priority Date Filing Date
US458336A Expired - Lifetime US3308749A (en) 1965-05-24 1965-05-24 Print impression control for specially configured type elements

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US (1) US3308749A (de)
BE (1) BE680825A (de)
CH (1) CH435819A (de)
DE (1) DE1270857B (de)
ES (1) ES327040A1 (de)
FR (1) FR1480734A (de)
GB (1) GB1082747A (de)
NL (1) NL149618B (de)
SE (1) SE328314B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476044A (en) * 1968-01-08 1969-11-04 Datamark Inc Linear type font oscillating means for high speed printers and the like
US3564999A (en) * 1968-06-04 1971-02-23 Gen Electric Print actuation system employing magnetically actuatable hammers and movable type carrier
US3595167A (en) * 1968-01-11 1971-07-27 Wirth Gallo & Co Impact printing mechanism
US3696739A (en) * 1970-05-04 1972-10-10 American Regital Corp Striking apparatus for rotating wheel printer
US3768619A (en) * 1971-12-29 1973-10-30 Addressograph Multigraph Direct image composing machine having means to prevent pressure overload of printing characters
US3797387A (en) * 1971-09-10 1974-03-19 Triumph Werke Nuernberg Ag High speed printer
US3823667A (en) * 1972-07-03 1974-07-16 Teletype Corp Force adjustment in impact printers
JPS4990205U (de) * 1972-11-24 1974-08-05
US3912064A (en) * 1973-01-30 1975-10-14 Kroy Ind Inc Printing apparatus with font alignment means

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935935A (en) * 1959-03-19 1960-05-10 Ncr Co Printing mechanism
US2936704A (en) * 1958-01-21 1960-05-17 Olympia Werke Ag High speed printing apparatus
US3144821A (en) * 1960-10-06 1964-08-18 Ibm Printer apparatus having print force control
US3175486A (en) * 1961-05-03 1965-03-30 Ibm High speed print hammer
US3209682A (en) * 1962-08-30 1965-10-05 Ibm Type carrier for high speed printer
US3241480A (en) * 1963-03-28 1966-03-22 Ibm Print hammer mechanism and pressure control means in high speed printers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1381321A (fr) * 1962-08-30 1964-12-14 Ibm Support de caractères pour une machine à imprimer à grande vitesse

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936704A (en) * 1958-01-21 1960-05-17 Olympia Werke Ag High speed printing apparatus
US2935935A (en) * 1959-03-19 1960-05-10 Ncr Co Printing mechanism
US3144821A (en) * 1960-10-06 1964-08-18 Ibm Printer apparatus having print force control
US3175486A (en) * 1961-05-03 1965-03-30 Ibm High speed print hammer
US3209682A (en) * 1962-08-30 1965-10-05 Ibm Type carrier for high speed printer
US3241480A (en) * 1963-03-28 1966-03-22 Ibm Print hammer mechanism and pressure control means in high speed printers

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476044A (en) * 1968-01-08 1969-11-04 Datamark Inc Linear type font oscillating means for high speed printers and the like
US3595167A (en) * 1968-01-11 1971-07-27 Wirth Gallo & Co Impact printing mechanism
US3564999A (en) * 1968-06-04 1971-02-23 Gen Electric Print actuation system employing magnetically actuatable hammers and movable type carrier
US3696739A (en) * 1970-05-04 1972-10-10 American Regital Corp Striking apparatus for rotating wheel printer
US3797387A (en) * 1971-09-10 1974-03-19 Triumph Werke Nuernberg Ag High speed printer
US3768619A (en) * 1971-12-29 1973-10-30 Addressograph Multigraph Direct image composing machine having means to prevent pressure overload of printing characters
US3823667A (en) * 1972-07-03 1974-07-16 Teletype Corp Force adjustment in impact printers
JPS4990205U (de) * 1972-11-24 1974-08-05
JPS5238251Y2 (de) * 1972-11-24 1977-08-31
US3912064A (en) * 1973-01-30 1975-10-14 Kroy Ind Inc Printing apparatus with font alignment means

Also Published As

Publication number Publication date
GB1082747A (en) 1967-09-13
NL6606919A (de) 1966-11-25
BE680825A (de) 1966-10-17
DE1270857B (de) 1968-06-20
NL149618B (nl) 1976-05-17
SE328314B (de) 1970-09-14
CH435819A (de) 1967-05-15
ES327040A1 (es) 1967-03-16
FR1480734A (fr) 1967-05-12

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