EP0437036A1 - Farbbandkassette mit integrierter Papierführung - Google Patents

Farbbandkassette mit integrierter Papierführung Download PDF

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Publication number
EP0437036A1
EP0437036A1 EP90312989A EP90312989A EP0437036A1 EP 0437036 A1 EP0437036 A1 EP 0437036A1 EP 90312989 A EP90312989 A EP 90312989A EP 90312989 A EP90312989 A EP 90312989A EP 0437036 A1 EP0437036 A1 EP 0437036A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
improved
front sidewall
ribbon
carrier
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.)
Withdrawn
Application number
EP90312989A
Other languages
English (en)
French (fr)
Inventor
Phillip M. Martinez
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.)
Smith Corona Corp
Original Assignee
Smith Corona 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 Smith Corona Corp filed Critical Smith Corona Corp
Publication of EP0437036A1 publication Critical patent/EP0437036A1/de
Withdrawn legal-status Critical Current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
    • B41J32/00—Ink-ribbon cartridges
    • 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
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/14—Aprons or guides for the printing section

Definitions

  • the present invention relates generally to typewriters and printers and more particularly pertains to a dual purpose print ribbon cassette or cartridge having a paper guide means for use therein.
  • the present invention discloses a dual purpose print ribbon cartridge which is shown as horizontally supported on a carrier for lateral movement along, but spaced apart from, the platen of the printing device.
  • a front side wall of the cartridge is opposite the platen and is provided with both an exit and an entrance aperture for travel of the print ribbon confined within the cartridge.
  • the upper wall is formed with an integral upwardly extending arcuate portion that rises beyond the cartridge upper wall to provide a relatively narrow passageway to guide the paper.
  • the cartridge is further formed with a vertical opening therethrough to accommodate a moving printhead.
  • the purpose of the present invention is to provide a dual purpose print ribbon cartridge for a typewriter or printer that has all the advantages of similarly employed prior art cartridges and provides the additional paper guide function.
  • the present invention comprises a print ribbon cartridge having an upper side wall formed with an upwardly extending portion that guides the paper medium between the cartridge and the platen.
  • the paper guide which is formed as an integral part of the cartridge eliminates the necessity of incorporating a paper guide as an independent element in the typewriter or printer and thereby reduces the cost of fabrication and assembly of the typewriter.
  • the additional cost of fabricating the dual purpose cartridge of this invention is relatively insignificant as compared with the cost of manufacturing a separate paper guide element for incorporation into the typewriter.
  • the prior art paper guide attached to the typewriter break, the entire typewriter would likely have to be transported to a service establishment for repair.
  • any defect in the paper guide of the present invention merely requires replacement of the cartridge with a new cartridge.
  • a dual purpose print ribbon cartridge is generally designated at 10 and includes an upper wall 12 and a lower or base wall 14 spaced therefrom.
  • the cartridge 10 contains a print ribbon 36 which may be a thermal or other type ribbon.
  • Upper and lower walls 12, 14 are joined together along their respective edges by sidewall 16 to thereby form a housing for confining the print ribbon 36.
  • Side wall 16 includes a front sidewall 18.
  • the cartridge 10 as is well known, may be made of any suitable material such as polystyrene or ABS.
  • the cartridge 10 is formed with an inwardly directed opening or gap 20 along front side wall 18 within which a typewriter printhead is located.
  • ribbon cartridges provide storage for a quantity of print ribbon 36 as well as means which coact with the typewriter or printer on which the cartridge 10 is mounted, to mechanically move the ribbon 36 in a loop, from an exit to an entrance opening in the cartridge 10. See, for example U.S. Patent No. 4,616,945.
  • the cartridge 10 is formed with an exit port 32 and and an entrance port 34 in opposing walls 18c and 18d defining the opening 20 of the front sidewall 18 across which an exposed portion of print ribbon 36 extends.
  • the front sidewall 18 is thus divided into two portions 18a and 18b.
  • the upper wall 12 is formed with an upwardly extending arcuate portions 22a and 22b for guiding paper or other medium on which the printing is to occur.
  • These guide portions 22a and 22b may take a variety of cross-sectional shapes including straight, angular, as well as arcuate or any combination thereof. The particular shape selected will be dependent on such variables as stiffness of the printing media and the spacing between the cartridge 10 and the platen.
  • the rear sidewall 16a is formed with a indented spring-like latch member 52.
  • FIG. 2 illustrates, in addition to the foregoing, a pair of slots 54 and 56 formed in the lower portion of front sidewall 18 for receiving a pair of latch fingers.
  • FIG. 3 wherein the cartridge 10 is shown horizontally supported within a typewriter or printer on a movable carrier 62 for lateral movement along a platen 38.
  • the cartridge 10 is not only supported on the carrier 62 but is releaseably affixed to the carrier in order to maintain a fixed position with respect to the platen 38.
  • the carrier 62 is provided with a rear flexible "L" shaped latching element 64 which engages mating cartridge latch member 52 and a pair of front latch fingers 58 and 60 that mate and engage cartridge slots 54 and 56. Since the latching components are relatively flexible, the cartridge can be readily inserted and removed from the carrier when it is to be replaced. Firm latching of the cartridge 10 prevents the paper 44 from lifting the front edge of the cartridge 10. Any force exerted by the paper 44 will cause the front edge of the cartridge 10 to lift up and alter the paper exit geometry thereby resulting in paper misfeed.
  • the typewriter includes a series of inner pinch rollers 40 and outer opposed pinch rollers 42 for moving paper 44 along typewriter guide 46 upwardly toward the opening or space between the cartridge ribbon 36 and platen 38, which may be a hard elongated bar supported on a stationary bracket 66.
  • the paper 44 on exiting the area between the platen 38 and the cartridge 10 is directed and guided by the arcuate extension 22 of the cartridge upper wall 12.
  • the thermal printhead 48 shown diagrammatically is supported on the typewriter carrier 62 with its operating face 50 opposite and adjacent the print ribbon 36.
  • the ribbon cartridge 10 has been illustrated and described with respect to thermal printing it may be readily adapted for other forms of printing such as dot matrix or impact daisy wheel.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
EP90312989A 1990-01-12 1990-11-29 Farbbandkassette mit integrierter Papierführung Withdrawn EP0437036A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46450990A 1990-01-12 1990-01-12
US464509 1990-01-12

Publications (1)

Publication Number Publication Date
EP0437036A1 true EP0437036A1 (de) 1991-07-17

Family

ID=23844227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90312989A Withdrawn EP0437036A1 (de) 1990-01-12 1990-11-29 Farbbandkassette mit integrierter Papierführung

Country Status (7)

Country Link
EP (1) EP0437036A1 (de)
JP (1) JPH04270678A (de)
KR (1) KR910014239A (de)
CA (1) CA2031152A1 (de)
MX (1) MX173158B (de)
NO (1) NO905335L (de)
PT (1) PT96466A (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2009708A (en) * 1977-12-12 1979-06-20 Ncr Co Ribbon cassette for use in a printer
US4325645A (en) * 1979-01-24 1982-04-20 Alps Electric Co., Ltd. Inked ribbon cartridge having a guide plate
EP0084630A1 (de) * 1982-01-27 1983-08-03 International Business Machines Corporation Druckbandkassette
US4768894A (en) * 1986-06-06 1988-09-06 Hitachi, Ltd. Thermal printer having a flat platen support mechanism

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58203471A (ja) * 1982-05-21 1983-11-26 Hitachi Metals Ltd ヒ−トロ−ル定着装置
JPS60250982A (ja) * 1984-05-28 1985-12-11 Tokyo Electric Co Ltd 転写式サ−マルプリンタ
JPS61139476A (ja) * 1984-12-12 1986-06-26 Canon Inc 記録装置
JPS6354277A (ja) * 1986-08-26 1988-03-08 Konica Corp サ−マルプリンタ
JPS63166572A (ja) * 1986-12-27 1988-07-09 Canon Inc インクシ−トカセツト及び該インクシ−トカセツトを用いるプリンタ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2009708A (en) * 1977-12-12 1979-06-20 Ncr Co Ribbon cassette for use in a printer
US4325645A (en) * 1979-01-24 1982-04-20 Alps Electric Co., Ltd. Inked ribbon cartridge having a guide plate
EP0084630A1 (de) * 1982-01-27 1983-08-03 International Business Machines Corporation Druckbandkassette
US4768894A (en) * 1986-06-06 1988-09-06 Hitachi, Ltd. Thermal printer having a flat platen support mechanism

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 336 (M-535)(2392) 14 November 1986, & JP-A-61 139476 (CANON) 26 June 1986, *

Also Published As

Publication number Publication date
CA2031152A1 (en) 1991-07-13
KR910014239A (ko) 1991-08-31
JPH04270678A (ja) 1992-09-28
NO905335D0 (no) 1990-12-10
PT96466A (pt) 1991-10-15
MX173158B (es) 1994-02-02
NO905335L (no) 1991-07-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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