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EP0072369B1 - Imprimante du ruban acier à identification automatique du ruban imprimeur - Google Patents

Imprimante du ruban acier à identification automatique du ruban imprimeur Download PDF

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Publication number
EP0072369B1
EP0072369B1 EP81106152A EP81106152A EP0072369B1 EP 0072369 B1 EP0072369 B1 EP 0072369B1 EP 81106152 A EP81106152 A EP 81106152A EP 81106152 A EP81106152 A EP 81106152A EP 0072369 B1 EP0072369 B1 EP 0072369B1
Authority
EP
European Patent Office
Prior art keywords
mark
identification
pulse
marks
timer
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
Application number
EP81106152A
Other languages
German (de)
English (en)
Other versions
EP0072369A1 (fr
Inventor
Walter Sakmann
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.)
IBM Deutschland GmbH
International Business Machines Corp
Original Assignee
IBM Deutschland GmbH
International Business Machines 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 IBM Deutschland GmbH, International Business Machines Corp filed Critical IBM Deutschland GmbH
Priority to EP81106152A priority Critical patent/EP0072369B1/fr
Priority to DE8181106152T priority patent/DE3169251D1/de
Priority to US06/335,945 priority patent/US4425846A/en
Priority to ES1982275028U priority patent/ES275028Y/es
Priority to JP57098588A priority patent/JPS5833468A/ja
Priority to CA000406359A priority patent/CA1184141A/fr
Priority to BR8204406A priority patent/BR8204406A/pt
Publication of EP0072369A1 publication Critical patent/EP0072369A1/fr
Application granted granted Critical
Publication of EP0072369B1 publication Critical patent/EP0072369B1/fr
Expired 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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/20—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on endless bands or the like

Definitions

  • the invention relates to a rotating, interchangeable type carrier for impact printers with scannable timer markings assigned to the characters and with a scannable marker for determining the start of control processes for the character output.
  • the invention relates in particular to steel band printers.
  • This start marking was previously provided (in the case of the IBM 3262 printer) in the form of a missing timer mark. When the timer marks were scanned, this start mark was also recognized.
  • the scanning pulse caused by the "start marking” could be electronically filtered out from the pulses caused by the timing marks and could thus be used for the start of the counting process for the timing marks with each tape revolution.
  • the type tapes of a steel tape printer are fundamentally interchangeable to use tapes with different type sets etc. and to replace old tapes with new ones.
  • Fig. 1 the type carrier tape 1 is cut out shown wisely in supervision.
  • the letters 1-1 to 1-7 with the associated timing marks 2-1 and 2-7 are etched out on the tape by photochemical processes; likewise the start mark 3 and the identification mark 4.
  • the direction of movement of the belt is indicated by the arrow D.
  • the type carrier tape runs with its timer marks past a so-called sensor.
  • This sensor consists, for example, of a permanent magnet 7 with a soft iron tip 6 around which a coil 5 is arranged.
  • a timer mark e.g. B. 2-2
  • a pulse P is induced in the coil 5 by the change in magnetic flux.
  • start mark 3 is arranged between two timer marks (in this example 2-1 and 2-2). This start marking is also detected by the sensor.
  • timer marks 2-1 to 2-7 and the start mark 3 is on the print tape between two other adjacent timer marks, e.g. B. 2-6 and 2-7, another mark, the so-called identification mark 4 attached.
  • the distance between the start mark 3 and the identification mark 4 is determined by the number of timer marks between them, e.g. B. 2-2 to 2-6 defined.
  • This number of time stamps enclosed between the markings 3 and 4 is also a measure for the identification of the printing tape. This number can be determined electronically for the circulating belt. It is also used for program-controlled addressing of a memory location in which the electronic image of this specific type band is stored. However, this provides the system with the type band information required for pressure control of the inserted type band.
  • the identification mark 4 will be placed at a different location, so that each type band type is defined by a different distance from the start to the identification mark.
  • the automatic type band identification occurs every time the printer is started.
  • the timing mark division is identified by T in FIG. 1.
  • the start mark 3 and the identification mark 4 are placed at a distance of T / 2 from their neighboring timing marks. After the start-up (reaching the working speed of the type band), those that go back to the start marking 3 and the identification marking 4 are filtered out from the chronological sequence of the pulses occurring at the sensor.
  • FIG. 3 shows a processing of the timing marks to be considered for a tape circulation, as well as the start and identification marks.
  • the number of timer marks lying between the start mark 3 and the identification mark 4 is A; the number of timing marks between the identification mark 4 and the start mark 3 is indicated by B.
  • the number A and B is determined by two different counters.
  • the smaller counter reading is used for tape identification (under the boundary condition that the maximum possible number of type tapes to be identified differently must not be greater than the number of timer marks on one tape half).
  • This boundary condition is obvious if one considers that the first time a "non-timer mark" (mark 3 or 4) occurs, it cannot be stated at first whether it is the start mark or the identification mark.
  • the start mark is recognized by the number of subsequent timer marks being less than 1/2 (A + B), where (A + B) is the total number of all the timer marks (except the start and identification marks). It follows that the total number of different bands to be identified is limited to 1/2 (A + B) - 1. In other words: in order to recognize the start marking or identification marking, A ⁇ B must be.
  • the number A soii directly corresponds to a band identification number, which can range from 1 to 1/2 (A + B) - 1.
  • FIG. 6 shows Various pulse time diagrams. With their help, it is possible to clarify the mode of operation of the circuit shown in FIG. 6.
  • Figure 4A shows a sequence of pulses derived from the sampled timer marks and the sampled start and identification mark.
  • FIG. 4B shows a pulse sequence which is obtained from the pulse sequence according to FIG. 4A with the aid of a monostable multivibrator.
  • FIG. 4C shows a pulse sequence as it is obtained with the aid of a flip-flop FF by ANDing the pulse sequences from FIGS. 4A and 4b.
  • Fig. 4D shows a filtered pulse train, in which only that derived from the timing marks ten pulses appear (the pulses based on the start marking and the identification marking are missing in this representation).
  • Fig. 4E shows a waveform as derived from that in Fig. 4C.
  • the rising edges of pulses 500 and 600 determine the pulse duration of pulse 700.
  • the signal curve in diagram 4E is thus characterized by a signal missing area and a signal present area.
  • 4E is used to control two counters. The first counter is used to detect the filtered timing mark pulses (according to FIG. 4D) during the signal-absent time in FIG. 4E (see FIG. 4F); the other counter is used to count the filtered timing mark pulses during the signal present time in FIG. 4E (see FIG. 4G).
  • FIG. 2 shows how the signal sequence occurring at the sensor can be generated as shown in FIG. 4A.
  • the signals occurring at the sensor 4 have a shape as indicated. They are amplified (8) and fed to a Schmitt trigger 9, which generates a series of rectangular pulses from them. The width of these pulses is specific to Schmitt triggers. These pulses are converted into a rectangular pulse sequence according to FIG. 4A via a monostable multivibrator 10. The pulse width of these pulses is smaller than at the Schmitt trigger output. The monostable multivibrator 10 is triggered by the start edge of the Schmitt trigger output pulses.
  • FIG. 6 shows the block diagram of a circuit as it can be used for the automatic determination of the band identification.
  • This circuit is supplied with the pulse train according to FIG. 4A on line 60. It contains the timer mark pulses 40 as well as the start marking pulse 50 and the identification marking pulse 60.
  • This pulse sequence is supplied on the one hand to a retriggerable, monostable multivibrator 61 and on the other hand to a delay element 62.
  • the monostable multivibrator 61 should have the following function:
  • Its output signal is set by the trailing edge of the pulses 40.
  • a time T 2 remains.
  • the time T 2 is chosen so that it is approximately plus the pulse width of the pulses 40 75% of the time T i , which characterizes the pulse interval of the pulses 40 in Fig. 4A.
  • the start marking pulse 50 or the identification marking pulse 60 lies in the middle between two adjacent pulses 40, their falling edge causes a new start of the time condition of the output signal of the monostable multivibrator 61 for an imaginary time of T 2 .
  • a trailing edge of the pulse 40 following the pulse 50 already occurs again, as a result of which the output signal of the monostable multivibrator 61 is maintained for a further time T 2 .
  • the signal is also generated in the area of the identification marking pulse 60.
  • the output of the monostable multivibrator 61 is fed to an AND gate 63, the output of which in turn leads to a bistable multivibrator (flip-flop FFI) 65 .
  • This circuit part is intended to perform the function of filtering out the start marking and identification marking pulses from the signal sequence according to FIG. 4A.
  • the pulse train according to FIG. 4A which is slightly delayed by the delay element 62, and the pulse train according to FIG. 4B are supplied to the AND gate 63.
  • This AND gate 63 causes a signal at the output of the AND gate 63, which sets a flip-flop 65, to be generated for an output signal of the monostable multivibrator 61 and a rising edge of a pulse in the pulse train according to FIG.
  • This flip-flop 65 is reset by the subsequent output signal at the AND gate 63, which is formed by a simultaneously set output signal of the monostable multivibrator and a simultaneous rising edge of a pulse in the pulse sequence according to FIG. 4A.
  • the flip-flop (65) output signal 500 or 600 is formed, which represents the "filtered out" start marking pulse or the "filtered out identification marking pulse.
  • the delay element 62 already mentioned has the task of slightly delaying the pulses according to FIG.
  • the pulse sequence according to FIG. 4A was thus divided into two different pulse sequences, one of which (FIG. 4D) contains the timer mark pulses and the other (FIG. 4C) the flip-flop pulses 500 and 600 corresponding to the start and identification marker pulse.
  • FIG. 4D contains the timer mark pulses
  • FIG. 4C the flip-flop pulses 500 and 600 corresponding to the start and identification marker pulse.
  • FIGS. 4C and 4D counting processes can now be controlled in a simple manner to determine the values A and B mentioned in connection with FIG.
  • the output signal of the AND gate 64 becomes both an AND gate 68 and a AND gate 69 supplied.
  • the second output of the AND gate 68 is connected via a flip-flop FFII 67 to the output of the flip-flop FFI 65, while the second output of the AND gate 69 is connected to the output of the flip-flop FFII 67 via a negation element 70.
  • the pulse sequence according to FIG. 4C is converted into one according to FIG. 4E by the flip-flop 67.
  • the flip-flop 67 provides an output signal for the time ranging from the start edge of the first flip-flop (65) output signal 500 to the start edge of the subsequent flip-flop (65) output signal 600.
  • the filtered timer mark pulses according to FIG. 4D can pass the AND gate 68 in order to be fed to a counter CTR I 71.
  • negation (70) thereof enables the AND gate 69 to pass the timer marks 1 > u [4e filtered according to: FIG. 4D to a counter CTR II 72 to understand.
  • Both counters 71 and 72 are connected to a comparison circuit 73 for determining the smaller 'counter reading, the output of which on line 74 provides the smaller counter reading as a type band identification number. With the aid of this value, the associated electronic image of the type band in the memory of the printer system can be addressed under program control.
  • circuit described for type band identification according to FIG. 1 is only to be understood as an example.
  • Other circuits for filtering out the start marking and identification marking pulses should be familiar to any person skilled in the art.
  • an identification mark pulse from the lack of a timing mark.
  • the continuous sequence of the timing markings on the type tape would be interrupted at one point by a missing timer mark. Identifying such a missing timer mark as a start mark is easy to solve with conventional electronic means and is familiar to every average person skilled in the art.

Landscapes

  • Handling Of Sheets (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Golf Clubs (AREA)
  • Passenger Equipment (AREA)
  • Controlling Sheets Or Webs (AREA)

Claims (3)

1. Porte-caractères rotatif interchangeable dans une imprimante à impact, comportant une piste avec des marques de synchronisation de détection associées aux caractères, un indicateur de détection M1 qui détermine le début du processus de commande d'impression des caractères et un indicateur d'identification automatique du porte-caractères, caractérisé en ce qu'on applique sur ledit porte-caractères un indicateur de détection M2, où la distance entre ledit indicateur M1 et ledit indicateur M2 peut être captée électroniquement et sert à identifier automatiquement le porte-caractères.
2. Porte-caractères rotatif interchangeable dans une imprimante à impact selon la revendication 1, caractérisé en ce que lesdits indicateurs M1 et M2 sont disposés entre lesdites marques de synchronisation associées aux caractères.
3. Porte-caractères rotatif interchangeable dans une imprimante à impact, comportant une piste avec des marques de synchronisation de détection associées aux caractères et un indicateur de détection M1 qui détermine le début du processus de commande d'impression des caractères et un indicateur d'identification automatique du porte-caractères, caractérisé en ce que ledit indicateur M1 et un autre indicateur M2 sont tous les deux signifiés par l'omission d'une marque de synchronisation, la distance entre lesdits indicateurs M1 et M2 pouvant être détectée électroniquement et servant à identifier automatiquement le porte-caractères.
EP81106152A 1981-08-06 1981-08-06 Imprimante du ruban acier à identification automatique du ruban imprimeur Expired EP0072369B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP81106152A EP0072369B1 (fr) 1981-08-06 1981-08-06 Imprimante du ruban acier à identification automatique du ruban imprimeur
DE8181106152T DE3169251D1 (en) 1981-08-06 1981-08-06 Steel band printer with automatic identification of the printing band
US06/335,945 US4425846A (en) 1981-08-06 1981-12-30 Type band and band printer with automatic print band recognition
ES1982275028U ES275028Y (es) 1981-08-06 1982-04-01 Un porta tipos giratorio y recambiable para impresoras de impacto.
JP57098588A JPS5833468A (ja) 1981-08-06 1982-06-10 衝撃型プリンタ用活字担持体
CA000406359A CA1184141A (fr) 1981-08-06 1982-06-30 Imprimante a bandes d'acier a reconnaissance automatique des bandes d'impression
BR8204406A BR8204406A (pt) 1981-08-06 1982-07-28 Impressora de fita de aco com reconhecimento automatico de fita de impressao

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81106152A EP0072369B1 (fr) 1981-08-06 1981-08-06 Imprimante du ruban acier à identification automatique du ruban imprimeur

Publications (2)

Publication Number Publication Date
EP0072369A1 EP0072369A1 (fr) 1983-02-23
EP0072369B1 true EP0072369B1 (fr) 1985-03-13

Family

ID=8187847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106152A Expired EP0072369B1 (fr) 1981-08-06 1981-08-06 Imprimante du ruban acier à identification automatique du ruban imprimeur

Country Status (7)

Country Link
US (1) US4425846A (fr)
EP (1) EP0072369B1 (fr)
JP (1) JPS5833468A (fr)
BR (1) BR8204406A (fr)
CA (1) CA1184141A (fr)
DE (1) DE3169251D1 (fr)
ES (1) ES275028Y (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58154079A (ja) * 1982-03-05 1983-09-13 Hitachi Koki Co Ltd 活字配列デ−タ編集装置
JPS5987184A (ja) * 1982-11-12 1984-05-19 Nec Corp 活字体識別装置
JPH0312533Y2 (fr) * 1984-11-02 1991-03-25
WO1989000503A1 (fr) * 1987-07-21 1989-01-26 Storage Technology Corporation Commande des fonctions d'imprimantes par identification de bande

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605610A (en) 1968-06-04 1971-09-20 Gen Electric Type member position sensing system in a high speed printer
US3845709A (en) 1973-02-26 1974-11-05 Iomec Corp Multifont selection
US3880075A (en) 1973-12-26 1975-04-29 Burroughs Corp Automatic chain identification method and apparatus
US3899968A (en) 1974-01-16 1975-08-19 Sperry Rand Corp Print media identification code
US4064800A (en) 1976-03-01 1977-12-27 Sperry Rand Corporation Printer device using time shared hammers
US4074798A (en) 1976-09-01 1978-02-21 Xerox Corporation Encoded print wheel system
JPS5476324A (en) * 1977-11-26 1979-06-18 Hitachi Koki Kk System for identifying kind of type carrier
JPS5574881A (en) * 1978-11-30 1980-06-05 Hitachi Koki Co Ltd Type transport means

Also Published As

Publication number Publication date
JPS5833468A (ja) 1983-02-26
US4425846A (en) 1984-01-17
EP0072369A1 (fr) 1983-02-23
DE3169251D1 (en) 1985-04-18
CA1184141A (fr) 1985-03-19
ES275028Y (es) 1984-10-01
BR8204406A (pt) 1983-07-19
ES275028U (es) 1984-03-01

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