US3822005A - Device for printing characters by points - Google Patents

Device for printing characters by points Download PDF

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Publication number
US3822005A
US3822005A US00340381A US34038173A US3822005A US 3822005 A US3822005 A US 3822005A US 00340381 A US00340381 A US 00340381A US 34038173 A US34038173 A US 34038173A US 3822005 A US3822005 A US 3822005A
Authority
US
United States
Prior art keywords
printing
guiding member
characters
sheet
character
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
US00340381A
Other languages
English (en)
Inventor
R Murat
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.)
Sagem SA
Original Assignee
Sagem SA
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 Sagem SA filed Critical Sagem SA
Application granted granted Critical
Publication of US3822005A publication Critical patent/US3822005A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/235—Print head assemblies
    • B41J2/25—Print wires

Definitions

  • the printing of characters is effectuated by means of movable printing elements located in a guiding member.
  • Said guiding member in the vicinity of the printing support is bevel-edged and provides a dihedron one face of which forms an angle of nearly 90 with the part of the said support located on the side of the already printed character so as to render the last printed character visible.
  • This arrangement permits to correct more easily printing errors.
  • the present invention is an improvement in devices for printing characters by points having mainly as its object a constructional arrangement permitting of making visible constantly the last character printed so as to facilitate the work of the operator of the printing machine.
  • FIG. I shows a perspective view of the device according to the invention
  • FIG. 2 shows a view partly in section on the plane l-l of the device of FIG. 1.
  • the tips of the printing elements are represented by 20 to 2g, the printing sheet at 11, the tip of the guiding member of the printing elements at 9, the guiding member at 8, the electro-magnets for control of the printing elments at 5 and 5, the movable blades of the electromagnets from 6a to 6g.
  • the inking ribbon I0 is driven in continuous or discontinuous rotation by means of drums a, 15b, 15c, 15d by means which do not form a part of the invention.
  • the seven printing ele ments which are superimposed blades pass inside the guiding member 9, but according to the invention, this member 9 terminates towards the sheet 11, in a dihedron of which the left face on the side towards the characters already printing forms an angle of nearly 90 with the sheet 11.
  • FIG. 2 This arrangement is clearly visible in FIG. 2.
  • the printing elements are superimposed blades, the section being effected level with the element la for example.
  • the ribbon I0 is supported on the two faces 9 a and 9b of the guiding member 9.
  • This member 9 is bevel-edged so that the face 9a is almost perpendicular to the sheet 11, the face 912 forming a slight angle with this sheet I].
  • the ribbon I0 is likewise in contact with the calibration hole 13 of the member 9 which allows the ends of the operated printing elements to pass.
  • the ribbon 10 therefore passes in the immediate vicinity of the end 13a of the printing blade 10.
  • the last character printed has been shown at 16a. It is clear in the two figures that this character is visible to the operator of the machine from the end of its printing.
  • the printing device of the invention shown in FIGS. I and 2 comprises elongated printing elements 1a to lg set in a vertical plane.
  • Control means are provided for the printing element by the groups of electromagnets 5 and 5' for longitudinally moving said printing elements and a guiding member 8 surrounding said printing elements which is generally perpendicular to the printing sheet 11 and which is bevelled at its end 9 near said printing sheet so that said end has the shape of a dihedron having one face 9a (FIG. 2) making an angle slightly less than with the part of said printing sheet located on the side of the already printed characters.
  • Means (not shown) are provided for moving said guiding member in the direction of said printing line.
  • the stop position of the writing head in fact is located on the right of the character to be printed and, according to an essential feature of the invention, the difference of length between the writing step and the width of a character is greater than the distance between the end of the guiding member near the printing sheet on the side of already printed characters and the vertical plane of the printing members. The operator may therefore check constantly and without any delay the text which he is instructed to print.
  • the arrangement according to the invention can also be used in the case of machines in which the printing elements strike directly a special inking paper without having therefore an inking ribbon.
  • the ribbon 10 as well as its driving members must be dispensed with, the arrangement of the other parts remaining the same. It is obvious that the omission of the thickness of the ribbon facilitates still more the ob taining of the result sought.
  • control means for longitudinally moving said printing elements
  • a guiding member comprising two parts the first of which is generally perpendicular to said printing sheet and which is bevelled at its end near said printing sheet so that said end has the shape of a dihedron having one face making an angle slightly less than 90 with the part of said printing sheet located on the side of the already printed characters for rendering visible the last printed character and a second part having a face forming a slight angle with respect to the printing sheet; said printing elements passing between the two guiding member parts for printing; and
  • Printing device furthercomprising an inking ribbon applied against the faces of said dihedron and against a calibration hole provided in said guiding member in which are lodged said print-

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
US00340381A 1972-05-04 1973-03-12 Device for printing characters by points Expired - Lifetime US3822005A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7215905A FR2183367A5 (enrdf_load_stackoverflow) 1972-05-04 1972-05-04

Publications (1)

Publication Number Publication Date
US3822005A true US3822005A (en) 1974-07-02

Family

ID=9098004

Family Applications (1)

Application Number Title Priority Date Filing Date
US00340381A Expired - Lifetime US3822005A (en) 1972-05-04 1973-03-12 Device for printing characters by points

Country Status (9)

Country Link
US (1) US3822005A (enrdf_load_stackoverflow)
BR (1) BR7300808D0 (enrdf_load_stackoverflow)
DD (1) DD103334A5 (enrdf_load_stackoverflow)
DE (1) DE2260329A1 (enrdf_load_stackoverflow)
ES (1) ES409569A1 (enrdf_load_stackoverflow)
FR (1) FR2183367A5 (enrdf_load_stackoverflow)
GB (1) GB1428177A (enrdf_load_stackoverflow)
IT (1) IT971828B (enrdf_load_stackoverflow)
NL (1) NL7216917A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970184A (en) * 1973-08-20 1976-07-20 Siemens Aktiengesellschaft Mosaic printing head for typewriters or similar machines
US3987883A (en) * 1975-04-17 1976-10-26 International Business Machines Corporation Ribbon lifting mechanism for a wire matrix printer
US4206266A (en) * 1977-12-27 1980-06-03 Florida Data Corporation Printer arm blank
US4329075A (en) * 1980-06-27 1982-05-11 International Business Machines Corporation Printhead assembly for typewriters or the like
US4351235A (en) * 1980-09-11 1982-09-28 Mannesmann Tally Corporation Dot printing mechanism for dot matrix line printers
US4572070A (en) * 1983-06-24 1986-02-25 Caracteres S.A. Needle-carrying head for a printing machine
EP0452934A1 (en) * 1990-04-20 1991-10-23 MATRIX S.r.l. Dot matrix print head
EP0481579A3 (en) * 1990-10-19 1993-01-13 Mannesmann Aktiengesellschaft Magnetic readable character printing process using matrix print heads and method for making the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH612523A5 (enrdf_load_stackoverflow) * 1975-06-30 1979-07-31 Svenska Dataregister Ab

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1874700A (en) * 1924-06-07 1932-08-30 Edna B Gardner Calculating machine
US3312163A (en) * 1963-12-03 1967-04-04 Int Standard Electric Corp Code setting device for print elements on reciprocating carriage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1874700A (en) * 1924-06-07 1932-08-30 Edna B Gardner Calculating machine
US3312163A (en) * 1963-12-03 1967-04-04 Int Standard Electric Corp Code setting device for print elements on reciprocating carriage

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970184A (en) * 1973-08-20 1976-07-20 Siemens Aktiengesellschaft Mosaic printing head for typewriters or similar machines
US3987883A (en) * 1975-04-17 1976-10-26 International Business Machines Corporation Ribbon lifting mechanism for a wire matrix printer
US4206266A (en) * 1977-12-27 1980-06-03 Florida Data Corporation Printer arm blank
US4329075A (en) * 1980-06-27 1982-05-11 International Business Machines Corporation Printhead assembly for typewriters or the like
US4351235A (en) * 1980-09-11 1982-09-28 Mannesmann Tally Corporation Dot printing mechanism for dot matrix line printers
US4572070A (en) * 1983-06-24 1986-02-25 Caracteres S.A. Needle-carrying head for a printing machine
EP0452934A1 (en) * 1990-04-20 1991-10-23 MATRIX S.r.l. Dot matrix print head
EP0481579A3 (en) * 1990-10-19 1993-01-13 Mannesmann Aktiengesellschaft Magnetic readable character printing process using matrix print heads and method for making the same

Also Published As

Publication number Publication date
DE2260329A1 (de) 1973-11-08
NL7216917A (enrdf_load_stackoverflow) 1973-11-06
FR2183367A5 (enrdf_load_stackoverflow) 1973-12-14
IT971828B (it) 1974-05-10
DD103334A5 (enrdf_load_stackoverflow) 1974-01-12
ES409569A1 (es) 1975-11-16
GB1428177A (en) 1976-03-17
BR7300808D0 (pt) 1974-07-25

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