US2767821A - Sheet feeding mechanism for typewriters or like machines - Google Patents

Sheet feeding mechanism for typewriters or like machines Download PDF

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Publication number
US2767821A
US2767821A US419304A US41930454A US2767821A US 2767821 A US2767821 A US 2767821A US 419304 A US419304 A US 419304A US 41930454 A US41930454 A US 41930454A US 2767821 A US2767821 A US 2767821A
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US
United States
Prior art keywords
roller
cylinder
work sheet
introducing
sheet feeding
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Expired - Lifetime
Application number
US419304A
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English (en)
Inventor
Girouard Edgar Adelard
Kloski John Felix
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Royal Mcbee Corp
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Royal Mcbee Corp
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Publication date
Application filed by Royal Mcbee Corp filed Critical Royal Mcbee Corp
Priority to US419304A priority Critical patent/US2767821A/en
Priority to GB4197/55A priority patent/GB767373A/en
Priority to FR1123700D priority patent/FR1123700A/fr
Priority to CH326581D priority patent/CH326581A/fr
Application granted granted Critical
Publication of US2767821A publication Critical patent/US2767821A/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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/02—Rollers
    • B41J13/036—Rollers co-operating with a roller platen
    • B41J13/042—Front and rear rollers or sets of front or rear rollers each mounted on a separate carrier

Definitions

  • This invention relates to sheet feeding mechanisms for typewriting and like machines and more particularly to improved pressure roll construction and to improved pressure coordination between the paper feeding cylinder and the pressure rolls.
  • Conventional typewriters of the kind including a rotatable sheet feeding cylindrical platen customarily include a paper pan extending under and circumferentially with respect to the platen for guiding and holding work sheet material against the platen, and pressure rolls engaging the work sheets for pressing them against the platen. While many such prior constructions have been generally satisfactory in operation, specific difficulties sometimes are encountered with respect to creeping of the work sheets lengthwise of the platen with consequent wrinkling due to the slack in the work sheets between the feed pressure rollers, sometimes even causing the work sheets to tear and to become misaligned with the platen.
  • An object of the present invention is to provide an improved sheet feeding construction including a sheet feeding cylinder and a plurality of rolls arranged to press work sheet material against the cylinder in circumferentially spaced zones, the rolls having different sheet forwarding or feeding characteristics so related as to eliminate or reduce such difiiculties to a minimum.
  • Another object of the invention is to provide a construction of the kind referred to in which the pressure exerting rolls have different friction characteristics.
  • Another object of the invention is to provide a sheet feeding construction in which pressure rolls spaced circumferentially of a cooperable sheet feeding cylinder are forced against or toward the cylinder with differential pressures so related as to eliminate or reduce the difiiculties heretofore encountered.
  • Another object of the invention is to provide an improved individual pressure roll construction.
  • Another object of the invention is to provide an improved relation between the position of the pressure rolls and the pressures exerted thereby against the platen.
  • Figure l is a fragmentary vertical sectional view, fore and aft of a typewriter carriage, taken along the line 11 of Figure 3, and showing interleaved work sheets and carbon paper at the point of introduction to the machine;
  • Figure 2 is a view similar to Figure 1, some parts being shown in elevation while other parts are omitted for the sake of clarity to illustrate interleaved work sheets and carbon paper in feeding relation in the machine;
  • Figure 3 is a top plan view of the carriage with the platen and work sheets removed, certain parts being shown in section;
  • Figure 4 is a fragmentary, enlarged transverse crosssection taken on the line 44 of Figure 1;
  • FIG. 5 is an exploded, enlarged, perspective view of a pressure feed roller constructed in accordance with the invention.
  • Figure 6 is an exploded, enlarged, perspective view of another pressure feed roller.
  • the invention may be embodied in typewriters or like machines of different constructions.
  • a platen or work sheet feeding cylinder A journalled for rotary work sheet feeding movements by suitable bearings (not shown) on end plates 1 and 2 of a carriage or support frame generally designated B.
  • the support B includes a rail 3 adapted to be supported by and to roll on balls 4 which in turn are supported by and roll on a rail 5 supported by a stationary main frame.
  • a paper pan generally designated C which preferably is of the type disclosed in the patent to Kloski, No. 2,582,783, and which is supported by the support end plates 1 and 2 in a suitable manner.
  • a paper finger guide 10 is adjustably mounted on the stationary frame by means of a nut and bolt assembly 11 the bolt of which extends through a slot in a bracket 12 fixed to the sta tionary frame rail 5.
  • a plurality of top sheet positioning rolls one of which is shown at 15 in Figure 1, may be carried by a bail 16 pivoted on end plates 1 and 2 and arranged to aid in holding work sheets against the front of the sheet feeding cylinder A.
  • the illustrated construction is conventional.
  • the invention resides in the relation of the characteristics of the introducing roll 6 and the propelling rolls 7, 8 and 9, the top rolls 15, and in the relative pressures by which the introducing and propelling rolls press against the sheet feeding cylinder.
  • the rear or work sheet introducing roller 6 comprises an elongated smoothly cylindrical tube 20 preferably formed from a hard substance which is smoothly polished so as to have a low coefficient of friction.
  • the composition of the tube 20 may be aluminum having a Rockwell superficial hardness rating of 8283 (l5-T) or a Rockwell B scale hardness rating of 66-68.
  • An aluminum tube enables satisfactory results to be obtained, but aluminum is not to be considered as the sole material from which the tube may be made as there are other metals and plastics which possess the desired qualifications as set forth.
  • an oilite or nylon bearing 21, 22 may be press fitted into the tube to journal the tube 20 on a shaft 23 which passes through and projects beyond the ends of the bearings.
  • the threaded ends of the shaft 23 are received in notches for-med in leftand right-hand hanger arms 24 and 25, respectively, and are provided with nuts 18, 19 to prevent motion of the shaft laterally of the machine.
  • the hanger arms are pivotally mounted by means of pivot pins 29 on cars 26 and 27 struck out from a cross bar 28 carried by the end plates 1 and 2 of the support B.
  • Also on the cross bar 28 are mounted flat springs 30 and 31 whose ends bear against the rear edges of arms 24 and 25, respectively, to urge the arms clockwise, as viewed in Fig ures 1 and 2, to press the work sheet introducing roll 6 against the work sheet material D extending between the introducing roller and the work sheet feeding cylinder A.
  • the total pressure or force applied to each of the hanger arms 24 and 25, and hence the total pressure urging the introducing roller 6 against the sheet feeding cylinder A may be regulated by means of adjusting nuts, one of which is shown at 32 in Figure 4, bearing against the rear surfaces of springs 30 and 31 and mounted on bolts 33 and 34 which project through openings in the cross rail 28 and through openings in the springs 30 and 31.
  • the nuts are run up on the bolts 33 and 34 which causes the springs 30 and 31 to exert a greater rocking effort on the hanger arms 24 and 25, respectively, the rocking efifort being exerted in a clockwise direction as viewed in Figures 1 and 2.
  • this operation should be reversed.
  • one end of a shaft 36 is rockably mounted at 37 in a bracket 38 carried by the support rail 3 as shown in Figure 3, the other end of the shaft projecting through a bearing (not shown) in the support end plate 2 and carrying a gear 39.
  • a lever 40 pivoted as at 41 on the end plate 2, carries at one end a toothed segment 42 whose teeth mesh with the teeth of the gear 39.
  • the other end of the lever 40 is equipped with a finger piece 43 to aid in rocking the lever 40.
  • the shaft 36 is rocked by means of the lever 40 and the cooperating toothed segment 42 and gear 39 so as to cause the bottoms of the recesses 47 to press against the fingers 45, 46 and thereby rock the hanger arms 24, 25 counterclockwise against the force of the springs 30, 31.
  • An important feature of this invention resides in the relation between the force or total pressure utilized to press the work sheet introducing feed roller 6 against the sheet feeding cylinder A and the force or'pressure with which the rolls 7, 8 and 9 are pressed against the cylinder A.
  • the sole force tending to press the roll 6 against the cylinder is the force applied to the rear edges of the hanger arms 24, 25 through the springs 30, 31.
  • the force applied to the hanger arms through the springs may be varied by the adjusting nuts 32.
  • This invention contemplates utilizing, in an office typewriter of the general class referred to, a total pressure or force of not more than one and one-half pounds to urge the roller 6 against the cylinder A, and, preferably, the total pressure or force will be in the range of one and one-fourth to one and one-half pounds.
  • Total pressures within the range specified are considerably less than customarily are utilized for feed rollers located in conventional machines in a position corresponding to the roller 6.
  • the lower total pressure acting on therollcr' 6 together with its smooth, polished surface changes the function of the roller 6 from primarily a sheet feeding roller to primarily a sheet aligning and guiding means, and, secondarily, the initial work sheet advancing means, coacting with the sheet feeding cylinder A and assisting in introducing work sheet material between the paper pan C and the sheet feeding cylinder A.
  • the roll 6 has been termed a work sheet introduc' ing roll rather than a work sheet feeding roller. Work sheets are fed or propelled by the cooperation of the sheet feeding cylinder A and the front pressure rolls 7, 8, and 9 as will be more specifically pointed out.
  • the front pressure of work sheet propelling rolls 7, 8 and 9, comprise a plurality of short, soft, resilient, thiclo walled tubes 50, 51, 52, having a high coefiicient of friction.
  • a suitable substance from which the tubes may be formed is rubber having a durometer hardness rating within the range of 4050; and the thickness of the walls of the tubes may be substantially equal to the radius of the bore.
  • a tube formed of rubber in accordance with these specifications has a highly frictional surface and may be compressed substantially without causing excessive hardening of the rubber due to compacting.
  • the substance of which the tubes are formed is preferably much softer than the substance which forms the outer surface of the cylinder A, which latter substance may be the conventional hard rubber.
  • the tubes 50, 51, 52 are cemented to sleeves 53 whose ends are equipped with press fitted bronze bushings 54 journalled on a shaft 55.
  • the shaft 55 is carried by spaced, short arms 56, 57, and 58, the short arms being rockable in unison on stub shafts 59, 60 and 61 secured to the support rail 3.
  • the stub shafts fit into recesses formed in the support rail and are held in place by retaining plates 62, 63, 64, secured to the rail 3 by screws 65, 66, 67.
  • Each plate is provided with a flange as shown at 68, 69, 70 adapted to fit into a correspondingly positioned recess formed in the support B so as to position the plates accurately on the rail 3.
  • the support rail 3 is provided with transversely extending slots in which the arms 56, 57, 58 are received toipermit mounting of the arms on the stub shafts 59, 60, 61 without interference from the rail 3.
  • Separate and independently adjustable mechanisms E are provided for urging the arms 59, 60, 61 to rock clockwise as viewed in Figures 1 and 2, so as to cause the feed rolls 7, 8 and 9 to press against the work sheet material D extending between the feed rolls and the sheet feeding cylinder A.
  • the mechanisms E may be of any suitable type, and in the form of the invention illustrated, they are of the kind disclosed in the patent to Kloski, No. 2,582,783.
  • a mechanism E comprises a two-armed lever 75 mounted to rock on a pivot screw 76.
  • One arm 77 of the two armed lever 75 is formed with a rounded edge which projects under and is in contact with the arm 56, 57 or 58 supporting the shaft 55.
  • the other arm 78 of the lever 75 is apertured for connection to one end of a spring 79, the other end of which is connected to a spring anchor 80 in the form of a twoarmed lever pivoted on a screw 81.
  • one arm 82 of the spring anchor lever 80 is apertured for connection to the spring '79, and the other arm 83 of the lever 80 is formed with a rounded edge which is engaged by an end of an adjusting screw 34 which has threaded connection with an car projecting upwardly from support rail 3.
  • the screws 84 are backed off, thus permitting reverserotation of'levers 80, as viewed in Figure 3, which lessens the tension of springs 79.
  • the arms 56, 57 and 58 are formed with extensions 85, 86 and 87 which normally extend freely into slots 88 formed in the shaft 36.
  • the top or bail rolls preferably are formed of material the same as that-specified for the work sheet propelling rollers 7, 8 and ,9, so that the rolls 15 may press against the work sheets to hold and guide them but, due to the resiliency of the roller material will not cause a transfer of carbon from interleaved carbon paper to the subjacent work sheets.
  • the tension of the springs 79 should be set so that the total pressure or force exerted by the rolls 7, 8 and 9 against the cylinder A is not less than one and three-quarter pounds, and, preferably, within the range of one and three-quarter pounds to two pounds.
  • total pressure is meant the force required to withdraw the shaft 55, with the rolls 7, 8 and 9 mounted thereon, away from the cylinder A against the force of the springs 79.
  • total pressure as applied to the introducing roller 6 means that the total force required to withdraw roller 6 from contact with cylinder A, against the force of Springs 30 and 31, should be within the range specified, namely: one and one-fourth 'to one and one-half pounds.
  • the work sheet feeding cylinder has a length of approximately nine and seven-eighths inches and a diameter of approximately one and one-half inches.
  • the rear or introducing roll means 6 is approximately six and three-quarters inches in length and has an approximate diameter of eleven-sixteenths inch.
  • the forwarding roll means 6 comprises a single or one piece roller.
  • the propelling roll means is shown "as comprising three rollers 7, 8 and 9 the total length of which is approximately three and one-sixteenth inches and the diameter of each roller 7, 8 and 9 is approximately three-eighths inch.
  • rollers having these approximate measurements are located as shown in the drawings with a greater total pressure applied to the shorter rollers than is applied to the longer roller, the unit pressure exerted by the small short rollers will be greater than the unit pressure exerted by the larger longer roller due both to the greater area of contact of the larger roller,
  • a paper pack composed of one sheet of bond paper, four sheets of manifold paper, and four sheets of carbon paper interleaved with the manifold paper was introduced into the typewriter between the feed rollers and the cylinder or platen. Near the upper left hand edge of the paper pack, the word The was typed. Following the typing of the upper left The the carriage and paper pack were letter spaced to the left and a second The was typed near the upper right hand edge of the paper. The paper pack then was advanced through the typewriter a certain number of lines and the word The typed near the lower left hand edge of the paper, this The being positioned in vertical alignment but below the upper left The.
  • the carriage and paper pack then were letter spaced to the left and a fourth The typed, this The appearing in vertical alignment and below the upper right The. Following the typing of the fourth The the paper pack was fed reversely through the machine the same number of line spacing increments it had been advanced forwardly and the word The was typed for a fifth time, this The being typed at a position on the paper which should correspond to the position of the first typed or upper left The. Then the word The was typed for a sixth time near the upper right hand edge of the paper in a position which should correspond to the position of the second typed The. Had there been no slipping of the paper pack in the typewriter, the fifth and sixth typed Thes should have been superimposed perfectly on the first and second typed Thes, respectively.
  • the fifth and sixthtyped Thes were vertically displaced relatively to the first and second typed Thes, the fifth type The appearing above the first typed The and the sixth typed The appearing below the second typed The. Moreover, the fifth and sixth typed Thes were disposed slightly to the left of the first-and second typed Thes, respectively. The results of this test indicate both slipping and creeping of the paper pack in the machine.
  • a support a cylinder journalled on said support for rotary work sheet feeding movements; a first roller, said first roller having a smoothly cylindrical relatively friction free surface thereon; means mounting said first roller for rotation about an axis parallel to the axis of said cylinder and so spaced therefrom that a work sheet extending between said cylinder and said first roller is gripped therebetween with a relatively low pressure; a second roller, said second roller having a frictional surface thereon; and means mounting said second roller for rotation about an axis parallel to the axis of said cylinder and so spaced therefrom that a work sheet extending between said cylinder and said second roller is gripped therebetween with a relatively high pressure as compared with the pressure exerted by said first roller, said second roller being circumferentially displaced with respect to said cylinder from said first roller.
  • a support in a typewriting or like machine, a support; a cylinder journalled on said support for rotary work sheet feeding movements; a work sheet introducing roller, said introducing roller having a smoothly cylindrical relatively friction free surface thereon; means mounting said introducing roller for rotation about an axis parallel to the axis of rotation of said cylinder and so spaced therefrom that a work sheet introduced between said cylinder and said introducing roller is gripped therebetween with a relatively low pressure; a work sheet propelling roller, said propelling roller having a frictional surface thereon; and means mounting said propelling roller for rotation about an axis parallell to the axis of said cylinder and so spaced therefrom that a work sheet extending between said propelling roller and said cylinder is gripped therebetween with a relatively high pressure as compared with the pressure exerted by said introducing roller, said propelling roller being circumferentially displaced with respect to said cylinder from said introducing roller in the direction of sheet feeding.
  • a support In a typewriting or like machine, a support; a cylinder journalled on said support for rotary work sheet feeding movements; a smoothly cylindrical hard surfaced first roller; means mounting said first roller for rotation about an axis parallel to the axis of said cylinder and so spaced therefrom that a work sheet extending between said cylinder and said first roller is gripped therebetween with a relatively low pressure; a soft surfaced second roller; and means mounting said second roller for rotation about an axis parallel to the axis of said cylinder and so spaced therefrom that a work sheet extending between said cylinder and said second roller is gripped therebetween with a relatively high pressure as compared with the pressure exerted by said first roller, said second roller being circumferentially displaced with respect to said-cylinder from said first roller.
  • a support In a typewriting or like machine, a support; a cylinder journalled on said support for rotary work sheet feeding movements; a work sheet introducing roller, said introducing roller having a smoothly cylindrical hard relatively friction free surface thereon; means mounting said introducing roller for rotation about an axis parallel to the axis of rotation of said cylinder and so spaced therefrom that a work sheet introduced between said cylinder and said introducing roller is gripped therebetween with a relatively low pressure; a work sheet propelling roller, said propelling roller having a soft frictional surface thereon; and means mounting said propelling roller for rotation about an axis parallel to the axis of said cylinder and so spaced therefrom that a work sheet extending between said propelling roller and said cylinder is gripped therebetween with a relatively high pressure as compared with the pressure exerted by said introducing roller, said propelling roller being circumferentially displaced forwardly in the direction of sheet feeding with respect to said cylinder from said introducing roller.
  • a support in a typewriting or like machine, a support; a cylinder journalled on said support for rotary work sheet feeding movements; a smoothly cylindrical hard surfaced first roller; means mouting said first roller for rotation about an axis parallel to the axis of said cylinder and so spaced therefrom that a work sheet extending between said cylinder and said first roller is gripped therebetween a relatively low pressure; a soft surfaced second roller; means mounting said second roller for rotation about an axis parallel to the axis of said cylinder and so spaced "rom that a work sheet extending between said cylinand second roller is gripped therebetween with a relatively high pressure as compared with the pressure exerted by said first roller, said second roller being circutnferentially forwardly displaced in the direction of sheet feeding with respect to said cylinder from said first roller; a bail mounted on said support for swinging mover ment about an axis parallel to the axis of said cylinder; and a work sheet pressing roller carried by said bail and swingable therewith into
  • a support in a typewriting or like machine, a support; a cylinder iournalled on said support for rotary work sheet feeding movements; a work sheet introducing feed roller having a smoothly cylindrical, polished, relatively friction free surface and composed of a material having a Rockwell B scale hardness within the limits of 66 to 68, inclusive; means mounting said introducing roller for rotation about an axis parallel to the axis of said cylinder and so spaced therefrom that a work sheet introduced between said cylinder and said introducing roller is gripped therebetween with a relatively low pressure; a work sheet propelling roller having a surface composed of a material having a high coefiicient of friction and havinga durometer hardness within the limits of 40 to 60, inclusive; and means mounting said propelling roller for rotation about and axis parallel to the axis of rotation of said cylinder and so spaced therefrom that a work sheet extending between said propelling roller and said cylinder is gripped therebetween with a relatively high pressure as compared to the pressure exerted by
  • a typewriting or like machine as set forth in claim 7 including a bail mounted on said support for swinging movement about an axis parallel to the axis of said cylinder; a work sheet pressing roller carried by said bail and swingable therewith into and out of pressing engagement with said cylinder, said work sheet pressing roller having a soft frictional surface.
  • a support a cylinder journalled on said support for rotary work sheet feeding movements; work sheet introducing smoothly cylindrical roller means; means mounting said introducing roller means for rotation about an axis parallel to the axis of rotation of said cylinder and so spaced therefrom that a work sheet introduced between said cylinder and said introducing roller means is gripped therebetween; work sheet propelling roller means; and means mounting said propelling roller means for rotation about an axis parallel to the axis of rotation of said cylinder and so spaced therefrom that a work sheet extending between said cylinder and said propelling roller means gripped therebetween, said introducing roller means ogether with said cylinder constituting means for initially ceding work sheet material introduced to said typewriter or like machine, said propelling roller means being cir cumferentially displaced in the direction of sheet feeding with respect to said cylinder from said introducing roller means, the relative frictional sheet feeding characteristics of said propelling roller means and said introducing roller means being such that the sheet feeding tendency of said propelling roller means is
  • a support a cylinder journalled on said support for rotary Work sheet feeding movements; work sheet introducing smoothly cylindrical roller means; means mounting said introducing roller means for rotation about an axis parallel to the axis of rotation of said cylinder and so spaced therefrom that a work sheet introduced between said cylinder and said introducing roller means is gripped therebetween; Work sheet propelling roller means; and means mounting said propelling roller means for rotation about an axis parallel to the axis of rotation of said cylinder and so spaced therefrom that a work sheet extending between said cylinder and said propelling roller means is gripped therebetween, said introducing roller means together with said cylinder constituting means for initially feeding work sheet material introduced into said typewriter or like machine, said propelling roller means being circumfcrentially displaced in the direction of sheet feeding with respect to said cylinder from said introducing roller means, the relative frictional sheet feeding characteristics and the relative spacing of said propelling roller means and said introducing roller means being such that the sheet feeding tendency of said propelling roller means is
  • a support a cylinder journalled on said support for rotary work sheet feeding movements; a smoothly cylindrical Work sheet introducing roller; means mounting said introducing roller for rotation about an axis parallel to the axis of rotation of said cylinder and so spaced therefrom that a work sheet introduced between said cylinder and said introducing roller is gripped therebetween with a relatively low pressure; a work sheet propelling roller; and means mounting said propelling roller for rotation about an axis parallel to the axis of said cylinder and so spaced therefrom that a work sheet extending between said propelling roller and said cylinder is gripped therebetween with a relatively high pressure as compared with the pressure exerted by said introducing roller, the ratio between the pressure exerted by said first roller on a work sheet between said first roller and said cylinder and the pressure exerted by said second roller on a work sheet between said second roller and said cylinder being approximately one and one-half to one and three-quarters, said propelling roller being circumferentially displaced with respect

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US419304A 1954-03-29 1954-03-29 Sheet feeding mechanism for typewriters or like machines Expired - Lifetime US2767821A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US419304A US2767821A (en) 1954-03-29 1954-03-29 Sheet feeding mechanism for typewriters or like machines
GB4197/55A GB767373A (en) 1954-03-29 1955-02-11 Sheet feeding mechanism for typewriters or like machines
FR1123700D FR1123700A (fr) 1954-03-29 1955-03-07 Perfectionnement aux machines à écrire et machines analogues
CH326581D CH326581A (fr) 1954-03-29 1955-03-24 Mécanisme d'avance d'une feuille

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US419304A US2767821A (en) 1954-03-29 1954-03-29 Sheet feeding mechanism for typewriters or like machines

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US2767821A true US2767821A (en) 1956-10-23

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Application Number Title Priority Date Filing Date
US419304A Expired - Lifetime US2767821A (en) 1954-03-29 1954-03-29 Sheet feeding mechanism for typewriters or like machines

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US (1) US2767821A (fr)
CH (1) CH326581A (fr)
FR (1) FR1123700A (fr)
GB (1) GB767373A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292762A (en) * 1962-06-01 1966-12-20 Sperry Rand Corp Sheet feed mechanism
US4297045A (en) * 1979-09-21 1981-10-27 International Business Machines Corporation Paper feed system for a typewriter or the like

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2740215B2 (ja) * 1988-12-20 1998-04-15 三洋電機株式会社 熱転写記録装置
US5192141A (en) * 1991-05-02 1993-03-09 Tidemark Corporation Multi-dimensional media printer with media based registration and free edge printing
JPH0986705A (ja) * 1995-07-18 1997-03-31 Mitsubishi Electric Corp 自動給紙装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US975228A (en) * 1910-01-14 1910-11-08 Underwood Typewriter Co Type-writing machine.
US1247456A (en) * 1917-04-28 1917-11-20 Royal Typewriter Co Inc Paper-feed roll for writing-machines.
US1367784A (en) * 1919-06-18 1921-02-08 Underwood Typewriter Co Typewriting-machine
US1444385A (en) * 1921-05-25 1923-02-06 Remington Typewriter Co Typewriting machine
US2328624A (en) * 1940-12-28 1943-09-07 Ibm Typewriting machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US975228A (en) * 1910-01-14 1910-11-08 Underwood Typewriter Co Type-writing machine.
US1247456A (en) * 1917-04-28 1917-11-20 Royal Typewriter Co Inc Paper-feed roll for writing-machines.
US1367784A (en) * 1919-06-18 1921-02-08 Underwood Typewriter Co Typewriting-machine
US1444385A (en) * 1921-05-25 1923-02-06 Remington Typewriter Co Typewriting machine
US2328624A (en) * 1940-12-28 1943-09-07 Ibm Typewriting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292762A (en) * 1962-06-01 1966-12-20 Sperry Rand Corp Sheet feed mechanism
US4297045A (en) * 1979-09-21 1981-10-27 International Business Machines Corporation Paper feed system for a typewriter or the like

Also Published As

Publication number Publication date
FR1123700A (fr) 1956-09-25
GB767373A (en) 1957-01-30
CH326581A (fr) 1957-12-31

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