US3757346A - Printing method - Google Patents

Printing method Download PDF

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Publication number
US3757346A
US3757346A US00295154A US3757346DA US3757346A US 3757346 A US3757346 A US 3757346A US 00295154 A US00295154 A US 00295154A US 3757346D A US3757346D A US 3757346DA US 3757346 A US3757346 A US 3757346A
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United States
Prior art keywords
styli
dots
stylus
dot
column
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
US00295154A
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English (en)
Inventor
T Holland
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.)
Alcatel Lucent NV
Original Assignee
International Standard Electric Corp
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Filing date
Publication date
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Publication of US3757346A publication Critical patent/US3757346A/en
Assigned to ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS reassignment ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE
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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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/485—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes
    • B41J2/505—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements
    • B41J2/5056—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements using dot arrays providing selective dot disposition modes, e.g. different dot densities for high speed and high-quality printing, array line selections for multi-pass printing, or dot shifts for character inclination
    • 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
    • B41J2/265—Guides for print wires
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface

Definitions

  • This invention relates to the art of serial printing, and more particularly, to a method of printing mosaic characters.
  • column from seven to fifteen styli may be employed at from five to nine of the said horizontal locations.
  • the styli spacing is conventionally uniform. So is the location spacing. These two may be euqal, if desired.
  • FIG. 1 is a diagrammatic view of a conventional mosaic printer
  • FIG. 2 is a sectional view of a portion of a stylus head which may be employed with the present invention
  • FIG. 3 is a top plan view of a portion of a recording medium in five states of the development of a mosaic character thereon, the character being the numeral 7;
  • FIG. 4 is a top plan view of a portion of a recording medium showing the sequence in which dots are added thereto in accordance with the present invention to provide a mosaic character, the character being the numeral 7;
  • FIG. 5 is a rear elevational view of a carriage and stylus head constructed in accordance with the present invention.
  • FIG. 6 is a transverse sectional view taken on the line 6-6 of the apparatus shown in FIG. 5;
  • FIG. 7 is a sectional view taken on the line 77 through the apparatus shown in FIG. 5;
  • FIG. 8 is a front elevational view of the carriage and stylus'head shown in FIG. 5;
  • FIG. 9 is a sectional view taken on the line 9-9 of the apparatus shown in FIG. 8;
  • FIG. 10 is a right end elevational view of the apparatus shown in FIG. 8.
  • FIGS. 11, 12, 13 and 14 are diagrams illustrating the succession of printing and certain possible motions of the stylus head shown in FIG. 8.
  • FIG. 1 A conventional prior art mosaic printer is shown in FIG. 1 including an input circuit which receives and stores, for example, a serial binary code which deter mines which, if any, of a pluralityof styli in a column are employed to print dots on a recording medium.
  • Input circuit 20 thus controls a stylus head 21 and the individual styli thereof through a stylus control 23.
  • Input circuit 20 also controls a roll control 24 for a roll 25 which supports a recording medium 26 such as inked paper.
  • Input circuit 20 also controls a carriage control 27 which pulls a carriage 28 in a direction to the right, as viewed in FIG. 1, against the force of a spring 29 which is fixed at its left end connected to carriage 28 at its right end.
  • Head 21 is fixed to carriage 28.
  • Carriage 28 has a single guide 30 in which carriage 28 is guided by a tongue 31 that fits in a groove 32 of channel 30.
  • stylus head 21 includes a rear wall 33 and a front wall 34. Except as otherwise provided herein, the stylus head of the present invention shown at 35 in FIG. 5 may be identical to stylus head 21 shown in FIGS. 1 and 2.
  • a stylus 36 is slidable through a hole 37 in wall 34.
  • a solenoid winding 38 is fexed to wall 34.
  • Stylus 36 is thus slidable through winding 38.
  • a coiled spring 39 rests against the right end of winding 38 and urges stylus 36 in a direction toward wall 33.
  • Stylus 36 has a flange 40 fixed to the end thereof which is pressed against wall 33 by spring 39. Movement of stylus 36 in a direction to the left, as viewed in FIG. 2, is stopped by engagement of flange 40 with a flange 41 on a cylinder 42 fixed to wall 33.
  • dots may be made on paper 26 either by the impact of the end of a stylus thereagainst, or by producing a rocking motion of channel 30 shown in FIG. 1.
  • a mosaic character may be formed as shown in FIG. 3.
  • the same portion of a recording medium is illustrated at 43, 44, 45, 46 and 47.
  • a space will be left on the recording medium.
  • this space will not be one character space, but, for example, may be only one-fifth of a character space.
  • dots may be made simultaneously.
  • the dot in rectangle 43 is made before the other dots are made.
  • Dots 48, 49, 50 and 51 then may be made simultaneously thereafter.
  • One or more additional dots are added in each column until,
  • the succession of dots shown in FIG. 3 is not made. In lieu thereof, dots are made at the letter and reference nu,- meral locations shown in FIG. 4. As will be evident from the explanation of FIGS. ll, l2, l3 and I4, and other embodiments of the disclosure disclosed herein, variations of the sequence disclosed in FIG. 4 may be employed.
  • dots may be made, if desired, simultaneously whereas other dots may be made consecutively.
  • dot A is made first. All the dots B are made after dot A has been made. However, all the dots B may be made simultaneously.
  • Dot C is then made after all the dots B have been made.
  • Dot D is made after dot C has been made.
  • Dot E is made after dot D is made.
  • Dots F are made after dot E is made. However, both of the dots F may be made simultaneously.
  • Dot G is made after the dots F are made.
  • Dot H is made after the dot G is made.
  • FIGS. 5-10 Apparatus for accomplishing several embodiments is shown in FIGS. 5-10, inclusive.
  • a carriage is shown at 52.
  • Carriage 52 may have a base portion 53 identical to base portion 54 of carriage 28.
  • Carriage 52 has front and rear plates 55 and 56, respectively, as shown in FIGS. 5 and 6, which are held together by U- shaped braces 57 and 58 fixed thereto.
  • Stylus head 35 has a styli 59.
  • Stylus head 35 is movable vertically between plates 55 and 56 at an angle by a solenoid operator 60 shown in FIG. 5.
  • Stylus head 35 has four pins 61 fixed thereto which slide in four respective slots 62 through rear plate 56. See FIG. 7.
  • solenoid 60 can cause movement of stylus head 35 from the solid line position shown in FIG. 8 to the dotted line position 35 shown therein.
  • slots 63 may be provided for the four styli 59, slots 63 being provided through front plate 55. See also FIG. 9.
  • a solenoid winding is shown at 64 fixed to stylus head 35 around a stylus 59.
  • solenoid 60 it is not highly critical when solenoid 60 is energized. When it is energized, it may lift stylus head 35 to the position shown in dotted lines at 35 in FIG. 8. It is not highly critical exactly when solenoid 60 is energized during the movement of the column of styli 59 by a control, such as carriage control 27 shown in FIG. 1. However, if solenoid 60 and control 27 are moved simultaneously, stylus 59 may simply lower or raise at a single, stationary horizontal location.
  • FIG. 11 the solid dots which are recorded first. Styli 59 are then moved by the carriage control to the x position in FIG. 11. Solenoid 60, when deenergized, will then move the styli 59 to the ends of the arrows in FIG. 11 to record the dot at the circle in FIG. 4.
  • the circle in FIG. 4 is employed to represent the dot which is recorded last in its column.
  • all the dots, both first and second recorded, in FIGS. 11, 12, 13 and 14 may be the dots B1, B2, C and B3 in FIG. 4.
  • An alternative recording method is to first record the filled in dots in FIG. 12. This is accomplished by shifting head 35 in an upward right-hand direction as indicated by the arrows in FIG. 12 and then recording. So-
  • lenoid may then may be deenergized and the styli return to the x positions shown in FIG. 12.
  • the dot at the circle not filled in in FIG. 12 is recorded second after a right-hand shift has been made by the carriage control.
  • the filled in dot in the column of dots is filled in first by making a shift by deenergizing the solenoid 60 and then causing a, for example, one-fifth character space to be made by energization of the carriage control. Dots at the position of the circles in FIG. 13 are then made after the filled in dot in FIG. 13 is made.
  • Still another method of recording is to first record the solid dot in FIG. 14.
  • the carriage control is then operated to move the styli 59 to the x position shown in FIG. 14 from which head 35 is moved by energization of solenoid 60 to the positions at the arrowheads shown in FIG. 14. Dots are then recorded at the circles shown in FIG. 14. Solenoid 60 is then deenergized to allow the recording of none, one or more dots in the x column in FIG. 14.
  • the method of the present invention may be performed manually by manually energizing the styli solenoids, the carriage control and solenoid 60. Morever, the method of the present invention may be performed automatically.
  • the method of printing at least a portion of a mosaic character comprising the steps of: moving a vertical column of styli to a first printing location adjacent a recording medium, said styli having uniform vertical spacing; causing at least a first selected one of said styli to print a dot on said medium at the position of said first selected stylus; moving said styli vertically to a second location a distance equal to one-half said styli vertical spacing; and causing at least a second selected one of said styli to print a dot on said medium at the position of said second selected stylus, all of said steps being performed sequentially in the order stated.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
US00295154A 1971-10-07 1972-10-05 Printing method Expired - Lifetime US3757346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4670571A GB1364646A (en) 1971-10-07 1971-10-07 Printed telegraph machine

Publications (1)

Publication Number Publication Date
US3757346A true US3757346A (en) 1973-09-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00295154A Expired - Lifetime US3757346A (en) 1971-10-07 1972-10-05 Printing method

Country Status (6)

Country Link
US (1) US3757346A (de)
DE (1) DE2248564A1 (de)
GB (1) GB1364646A (de)
IT (1) IT968624B (de)
NL (1) NL7213587A (de)
SE (1) SE373011B (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871004A (en) * 1974-06-26 1975-03-11 Olympia Werke Ag Ink drop writing head
US3891077A (en) * 1972-10-27 1975-06-24 Bosch Gmbh Robert High-speed printer
US3942620A (en) * 1974-07-25 1976-03-09 International Business Machines Corporation Printing mechanism
DE2632293A1 (de) 1975-08-01 1977-02-17 Ibm Druckkopf fuer matrixdrahtdrucker
JPS5245415A (en) * 1975-10-06 1977-04-09 Nippon Telegraph & Telephone High speed dot printer
US4079824A (en) * 1971-10-07 1978-03-21 Xerox Corporation Double speed dot matrix printhead
FR2362729A1 (fr) * 1976-08-26 1978-03-24 Zentronik Veb K Tete d'impression par points pour l'impression par colonnes
JPS5426123A (en) * 1977-07-27 1979-02-27 Hitachi Ltd Method of printing
DE3022128A1 (de) * 1980-06-10 1981-12-17 Mannesmann AG, 4000 Düsseldorf Verfahren und druckkopf zum erzeugen von druckzeichen nach dem matrix-druckverfahren
EP0040879A3 (en) * 1980-05-22 1982-02-10 Philips Patentverwaltung Gmbh Matrix printer with automatic print-head adjustment
WO1982003683A1 (en) * 1981-04-13 1982-10-28 Ncr Co Ink jet print head and method of controlling the flight path of ink droplets ejected therefrom
EP0075342A3 (en) * 1981-09-18 1984-03-28 Hermes Precisa International S.A. Shiftable printhead

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041877A1 (de) * 1980-11-06 1982-05-13 Mannesmann AG, 4000 Düsseldorf Matrixdrucker und zugehoeriger nadeldruckkopf

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457133A (en) * 1941-10-18 1948-12-28 Int Standard Electric Corp Fragmentary character printer
US3157456A (en) * 1963-01-31 1964-11-17 Nippon Electric Co Printer
US3627096A (en) * 1969-04-25 1971-12-14 Ibm Wire printing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457133A (en) * 1941-10-18 1948-12-28 Int Standard Electric Corp Fragmentary character printer
US3157456A (en) * 1963-01-31 1964-11-17 Nippon Electric Co Printer
US3627096A (en) * 1969-04-25 1971-12-14 Ibm Wire printing method

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079824A (en) * 1971-10-07 1978-03-21 Xerox Corporation Double speed dot matrix printhead
US3891077A (en) * 1972-10-27 1975-06-24 Bosch Gmbh Robert High-speed printer
US3871004A (en) * 1974-06-26 1975-03-11 Olympia Werke Ag Ink drop writing head
US3942620A (en) * 1974-07-25 1976-03-09 International Business Machines Corporation Printing mechanism
DE2632293A1 (de) 1975-08-01 1977-02-17 Ibm Druckkopf fuer matrixdrahtdrucker
US4010835A (en) * 1975-08-01 1977-03-08 International Business Machines Corporation Matrix print head
DE2660934C2 (de) * 1975-08-01 1986-06-19 International Business Machines Corp., Armonk, N.Y. Druckkopf für Matrixdrahtdrucker
JPS5245415A (en) * 1975-10-06 1977-04-09 Nippon Telegraph & Telephone High speed dot printer
FR2362729A1 (fr) * 1976-08-26 1978-03-24 Zentronik Veb K Tete d'impression par points pour l'impression par colonnes
JPS5426123A (en) * 1977-07-27 1979-02-27 Hitachi Ltd Method of printing
EP0040879A3 (en) * 1980-05-22 1982-02-10 Philips Patentverwaltung Gmbh Matrix printer with automatic print-head adjustment
DE3022128A1 (de) * 1980-06-10 1981-12-17 Mannesmann AG, 4000 Düsseldorf Verfahren und druckkopf zum erzeugen von druckzeichen nach dem matrix-druckverfahren
WO1982003683A1 (en) * 1981-04-13 1982-10-28 Ncr Co Ink jet print head and method of controlling the flight path of ink droplets ejected therefrom
US4376944A (en) * 1981-04-13 1983-03-15 Ncr Corporation Ink jet print head with tilting nozzle
EP0075342A3 (en) * 1981-09-18 1984-03-28 Hermes Precisa International S.A. Shiftable printhead

Also Published As

Publication number Publication date
NL7213587A (de) 1973-04-10
SE373011B (de) 1975-01-20
GB1364646A (en) 1974-08-29
DE2248564A1 (de) 1973-04-12
IT968624B (it) 1974-03-20

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Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

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Owner name: ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE;REEL/FRAME:004718/0023

Effective date: 19870311