US3312164A - Printing devices - Google Patents

Printing devices Download PDF

Info

Publication number
US3312164A
US3312164A US525074A US52507466A US3312164A US 3312164 A US3312164 A US 3312164A US 525074 A US525074 A US 525074A US 52507466 A US52507466 A US 52507466A US 3312164 A US3312164 A US 3312164A
Authority
US
United States
Prior art keywords
hammer
laminar
character
type
inch
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
US525074A
Other languages
English (en)
Inventor
John P Sebring
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.)
Moore Business Forms Inc
Original Assignee
Moore Business Forms Inc
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 Moore Business Forms Inc filed Critical Moore Business Forms Inc
Priority to US525074A priority Critical patent/US3312164A/en
Priority to GB2000/67A priority patent/GB1164903A/en
Priority to GR670134391A priority patent/GR34391B/el
Priority to SE1500/67A priority patent/SE343700B/xx
Priority to LU52922A priority patent/LU52922A1/xx
Priority to NL6701631A priority patent/NL6701631A/xx
Priority to CH173967A priority patent/CH445914A/de
Priority to FR93621A priority patent/FR1511764A/fr
Priority to BE693632D priority patent/BE693632A/xx
Priority to ES336989A priority patent/ES336989A1/es
Priority to DE19671561264 priority patent/DE1561264A1/de
Priority to NO166715A priority patent/NO120860B/no
Application granted granted Critical
Publication of US3312164A publication Critical patent/US3312164A/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
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J31/00—Ink ribbons; Renovating or testing ink ribbons
    • B41J31/12—Ink ribbons having arrangements to prevent undesired contact between the impression-transfer material and machine parts or other articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge

Definitions

  • This invention relates to printing devices and more particularly to such devices wherein the impression on the sheet is made by causing a hammer to strike the reverse side of the paper or other medium and force the immediate area of the front surface thereof against a type face.
  • This particular printing device probably finds its most important use in computer machines, where a print-out is made on a continuous multiple part form.
  • the imprinting is made against a type chain carrying a complete font of type.
  • Such a chain is moved to and fro selectively so that the proper character is placed into printing position, and then the impression is made by the print hammer striking through the multiple part form from the rear surface thereof.
  • the present invention results from the discovery that such defects can be eliminated by the interposition of a particular kind of shield between the print hammer and the back of the form.
  • This shield is of laminar form and is made of multiple layers of thin plastic material and the invention contemplates the provision broadly of a range of layers of the material and thicknesses within which the desired result becomes appreciable, and also the provision of optimum laminar and thickness qualifications for the maximum results.
  • the invention contemplates .the provision of a laminar shield or pack comprised of multiple layers of Mylar plastic.
  • Mylar is a trademark distinguish ing a polyester film material manufactured by'E. I. du Pont de Nemours & Co., the material being polyethylene terephthalate, which is a polymer formed by the condensation reaction of ethylene glycol and terephthalic acid. This material will be further defined by its known properties in the present specification.
  • the invention thus embraces an impact printing machine of the kind described employing this novel and improved shield, and also includes the multiple layer shield as an article of manufacture.
  • FIGURES 1 and 2 are diagrammatic views,l not drawn to scale, showing respectively prior art arrangements with the parts in position prior to and during impact bythe hammer;
  • FIGURES 3 and 4 are views similar to FIGURES l and 2 respectively and illustrative of the two corresponding stages with the use of the novel shield forming an essential element of the present invention
  • FIGURE 5 is a fragmentary view suggesting one way of securing the novel shield to the nose frame of a printing apparatus and in front of the hammers;
  • FIGURE 6 is an enlarged fragmentary view showing the preferred structure of the plastic shield
  • FIGURE 7 is a fragmentary View illustrating as Well as possible, considering the limitations of drawing, the undesirable halos or shadows which prevail in the impact printing machines now in use;
  • FIGURE 8 is a similar View illustrating the freedom from shadow or halo on a record sheet nearest the hammer in a device following the principles of the present invention.
  • FIGS l and 2 In the generic and quite diagrammatic showings in FIGURES l and 2, the prior art developments along this line of printing are exemplied.
  • a type element representative of numerous prior art constructions, whether carried upon a rotatable cylinder or arranged in the form of a chain.
  • the character comprising letters, numbers, or punctuation marks is of course embossed or otherwise delineated upon the face of the type member 10 as at 12.
  • a ribbon which can be moved step-by-step across the face 12 of the type 1() by suitable actuation of the reels 16 and 17 upon which the ribbon is wound.
  • a projectable hammer member 20 of which there may be any desired number selectively actuated, is mounted for delivering an impact against the rear surface of the sheet or manifold pack which passes between the hammer and the type and ribbon set-up.
  • a manifold pack is illustrated, for example, at in these figures of drawing and will be seen to comprise in the illustrated example, four record sheets a and three interposed carbon or transfer sheets b.
  • sheet.of record material or the like shall mean a single layer vora multi-layer pack.
  • the face 21 of the hammer compresses the sheets a and b and embeds itself slightly within the rear surface of the pack r causing the rearmost sheets to wraparound the margins of the hammer face 21 and thus cause the carbon or transfer coating to frame the character impression with a rough irregularly imprinted shadow or halo.
  • This undesirable framing of the character is suggested in FIGURE 7 of the drawings and it occurs definitely on the rearmost record sheet a and frequently on several of the rearward sheets.
  • the impact of the hammer is absorbed by the shield strip 30 and seems to broaden out the force of impact of the hammer so that the rearward portions of the multiple form do not mold themselves around the Ihammer face, but the hammer Astill transmits enough pressure to make summarizing these results, the following delineations appear.
  • the described improvement begins to make itself appreciable in the case of each material, with two layers of tilm each of a thickness of 0.0035 inch-total thickness 0.007 inch; two layers of film each of a thickness of D a good impression, such as suggested in FIGURE S of .005 inch-total thickness 0.010 inch, and six layers of the drawings.
  • Printing apparatus comprising a type member hav- Along the width of the enclosure 50 is provided an elon- 30 ing a surface formed to present a type character, means gated Slot 50.99Ollgh Which a multiplicity 0f hammers for supporting a sheet of record material with its surface are adapted to be projected. to be printed presented in front of said type surface,
  • the laminar Shield 0r buffer Pack 30 may he Secured hammer means for delivering a blow to the rear surface acrOSS the face 51 0f the frame 50 21S indicated in FIC of said record material to force the front face against URE 5, the ilange Portion D'Of the Peck being Secured 35 said type surface to imprint a character thereon, laminar O the member in any Suitable fashion 3S Suggested means supported in front of said hammer and between at 55- the hammer and the rear surface of said record sheet to It has been determined by eXPcrimenmliOn that thc sustain the direct force of the hammer blow and eliminate desired result is attained by the use of multiple sheets the production of a halo or Shadow image bordering the 0f Polyester PlaSic material made from Polyethylene 40 character reproduced on the record sheet, said laminar terephihnlaie, Ithe Polymer formed hy the condensation means comprising multiple layers of thin plastic sheeting, reaction of ethylene glyco
  • Thls Said plastic sheeting being a polyester mm made from material 1s manufactured 'by E. I. du Pont de Nemours& polyethylene terephthalate, the Polymer formed by the C0' under. the trademark Mylar' Ideritfyllg properiles condensation reaction of ethylene glycol and terephthalic of theD preferred fom off 1l/Iylar fir use 1n thils applicatilon 45 acid may e enumerate as o ows: u timate tensi e strengt 40,000 p.s.i.; stress to produce 5% elongation-21,000 to 1.12 hThe hapalrlatui 'asfsetlforth m dun?
  • laminar means comprises a pack of from two to seven Number oi Laminations Total No Change Slight Considerable Maximum Thickness Improvement Improvement Results Lamlnation thickness
  • Printing apparatus comprising a type member having a surface formed to present a type character, means for supporting a sheet of record material with its surface to be printed presented in front of said type surface, hammer means for delivering a blow to the rear surface of said record material to force the front face against said type surface to imprint a character thereon, laminar means supported in front of said hammer and between the hammer and the rear surface of said record sheet to sustain the direct force of the hammer blow and eliminate the production of a halo or shadow image bordering the character reproduced on the record sheet, said laminar means comprising multiple layers of thin plastic sheeting, said laminar means comprising at least three layers, the inner and outer layers being somewhat Wider than the intervening layers and the extended portions of said inner and outer layers being secured together thus providing yan envelope for said intervening layers.
  • a buffer strip for insertion between said hammers and the record sheeting, said buffer strip comprising from about three to about seven layers of polyester lm made from polyethylene terephthalate, the polymer formed by the condensation reaction of ethylene glycol and terephthalic acid, the innermost and outermost layers being somewhat wider than the intervening layers and the extended portions of said inner and outer layers being secured together thus forming -an envelope for containing said intervening layers.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Handling Of Sheets (AREA)
US525074A 1966-02-04 1966-02-04 Printing devices Expired - Lifetime US3312164A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US525074A US3312164A (en) 1966-02-04 1966-02-04 Printing devices
GB2000/67A GB1164903A (en) 1966-02-04 1967-01-13 Improvements in or relating to Printing Apparatus.
GR670134391A GR34391B (el) 1966-02-04 1967-02-01 Τελειοποιησεις εις η εν σχεσει προς συσκευας εκτυπωσεως.
LU52922A LU52922A1 (ja) 1966-02-04 1967-02-02
NL6701631A NL6701631A (ja) 1966-02-04 1967-02-02
CH173967A CH445914A (de) 1966-02-04 1967-02-02 Vorrichtung zur Verhütung der Wolkenbildung um Schriftzeichen, die von einem Typendruckwerk gedruckt werden
SE1500/67A SE343700B (ja) 1966-02-04 1967-02-02
FR93621A FR1511764A (fr) 1966-02-04 1967-02-03 Perfectionnements aux dispositifs d'impression
BE693632D BE693632A (ja) 1966-02-04 1967-02-03
ES336989A ES336989A1 (es) 1966-02-04 1967-02-03 Perfeccionamientos en dispositivos de impresion tipografica.
DE19671561264 DE1561264A1 (de) 1966-02-04 1967-02-03 Druckvorrichtung
NO166715A NO120860B (ja) 1966-02-04 1967-02-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US525074A US3312164A (en) 1966-02-04 1966-02-04 Printing devices

Publications (1)

Publication Number Publication Date
US3312164A true US3312164A (en) 1967-04-04

Family

ID=24091806

Family Applications (1)

Application Number Title Priority Date Filing Date
US525074A Expired - Lifetime US3312164A (en) 1966-02-04 1966-02-04 Printing devices

Country Status (10)

Country Link
US (1) US3312164A (ja)
BE (1) BE693632A (ja)
CH (1) CH445914A (ja)
DE (1) DE1561264A1 (ja)
ES (1) ES336989A1 (ja)
FR (1) FR1511764A (ja)
GB (1) GB1164903A (ja)
GR (1) GR34391B (ja)
NO (1) NO120860B (ja)
SE (1) SE343700B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3613856A (en) * 1968-12-27 1971-10-19 Ibm Antiwear shield for continuously rotatable-type disc printer
US4967662A (en) * 1989-03-23 1990-11-06 International Business Machines Corp. High speed printer with interposer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US168373A (en) * 1875-10-05 Improvement in carpet-linings
US1939306A (en) * 1929-08-02 1933-12-12 Frank R Leslie Insulation
US2584092A (en) * 1948-02-17 1952-01-29 Solar Engineering & Equipment Cup decorating machine
US3090297A (en) * 1960-11-17 1963-05-21 Honeywell Regulator Co Mechanical apparatus
US3143063A (en) * 1962-09-27 1964-08-04 Ncr Co Double print preventing shield in web printing machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US168373A (en) * 1875-10-05 Improvement in carpet-linings
US1939306A (en) * 1929-08-02 1933-12-12 Frank R Leslie Insulation
US2584092A (en) * 1948-02-17 1952-01-29 Solar Engineering & Equipment Cup decorating machine
US3090297A (en) * 1960-11-17 1963-05-21 Honeywell Regulator Co Mechanical apparatus
US3143063A (en) * 1962-09-27 1964-08-04 Ncr Co Double print preventing shield in web printing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3613856A (en) * 1968-12-27 1971-10-19 Ibm Antiwear shield for continuously rotatable-type disc printer
US4967662A (en) * 1989-03-23 1990-11-06 International Business Machines Corp. High speed printer with interposer

Also Published As

Publication number Publication date
NO120860B (ja) 1970-12-14
FR1511764A (fr) 1968-02-02
BE693632A (ja) 1967-07-17
CH445914A (de) 1967-10-31
SE343700B (ja) 1972-03-13
ES336989A1 (es) 1968-01-16
GB1164903A (en) 1969-09-24
DE1561264A1 (de) 1970-09-24
GR34391B (el) 1968-04-27

Similar Documents

Publication Publication Date Title
US4993752A (en) Method of producing correspondence
EP0664218A3 (en) Ink jet printing apparatus
MY124305A (en) Tape printer.
JPS5557489A (en) Type printing method and printer
US4859094A (en) Braille printing plate
US3312164A (en) Printing devices
US2163958A (en) Reduplicative sheet
US4302513A (en) Elastic typing medium for reduction of message size
EP0169959B1 (en) Braille print board
US3143063A (en) Double print preventing shield in web printing machines
US3381299A (en) Information storage device
US3421241A (en) Protected stencil aperture card
GB2342638A (en) Self adhesive labels
US3896920A (en) Typewriter ribbon for typing and correcting
US3225888A (en) Color type means
GB1299948A (en) Improvements in adhesive pictures
JPS6131260A (ja) プリンタ
JPH05193041A (ja) 再利用できる離型フイルム及び粘着フイルム付離型フイルム
USRE27180E (en) Imprinting and obliterating apparatus
JPS6328425Y2 (ja)
JPS58160182A (ja) 印字装置
JPH101651A (ja) 被印字貼着シート及びこれの製造方法、並びにテーププリンタ用テープ、テープカセット及びテーププリンタ
JP3103312B2 (ja) 印刷カード
JPS6056575A (ja) ハイブリツドプリンタ
JPH0612956Y2 (ja) 感圧印字用積層シート