EP0036112A1 - Imprimante par frappe - Google Patents

Imprimante par frappe Download PDF

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Publication number
EP0036112A1
EP0036112A1 EP81101366A EP81101366A EP0036112A1 EP 0036112 A1 EP0036112 A1 EP 0036112A1 EP 81101366 A EP81101366 A EP 81101366A EP 81101366 A EP81101366 A EP 81101366A EP 0036112 A1 EP0036112 A1 EP 0036112A1
Authority
EP
European Patent Office
Prior art keywords
type
record carrier
character
impact printer
characters
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.)
Granted
Application number
EP81101366A
Other languages
German (de)
English (en)
Other versions
EP0036112B1 (fr
Inventor
Robert Rudolph Schaffer
Dean William Skinner
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.)
International Business Machines Corp
Original Assignee
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0036112A1 publication Critical patent/EP0036112A1/fr
Application granted granted Critical
Publication of EP0036112B1 publication Critical patent/EP0036112B1/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
    • 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
    • B41J2/50—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 by the selective combination of two or more non-identical printing elements
    • 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
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/02—Hammers; Arrangements thereof
    • B41J9/10—Hammers; Arrangements thereof of more than one hammer, e.g. one for each character position

Definitions

  • the invention relates to a stop printer with a relative movement between the recording medium and the type carrier in the line direction.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of creating an impact printer; with a relatively high throughput and low maintenance.
  • the upper hammer group 10 and the lower hammer group 12 are adjacent to the recording medium transport path 14.
  • the hammer groups 10 and 12 each contain twenty-two print hammers 16 which are arranged at a pitch of 5.08 mm.
  • the hammer assemblies 10 and 12 are so mon - advantage that their print hammers are mm in a row with a pitch of 2.54 sixteenth
  • Each of the pressure hammers 16 can be pivoted about the bearing axis 18, which extends over the entire length within each hammer group 10 or 12.
  • An electromagnet 20 is assigned to each printing hammer, when the arm 22 of the assigned printing hammer 16 is excited when it is pivoted about the bearing axis 18 and the other arm of the printing hammer 16 is thereby moved with its stop surface 24 against the recording medium 36.
  • the upper and lower hammer groups 10 and 12 are identical and have a structure corresponding to US Pat. No. 3,747,521.
  • the ink ribbon 26 is moved from the supply spool 30 to the take-up spool 28 emotional.
  • the ink ribbon 26 is kept tensioned within the recording medium transport path 14 by the two rollers 32.
  • the character segment plate 34 is also mounted adjacent to the recording medium transport path 14, but facing the other side of the ink ribbon 26.
  • the recording medium 36 is moved between the ink ribbon 26 and the print hammers 16.
  • the printing is carried out by independently hitting the predetermined print hammers 16, as a result of which the stop surfaces 24 press the recording medium 36 and the ink ribbon 26 against a specific character segment 38.
  • the character segment plate 34 Details of the character segment plate 34 are shown in FIG. 2.
  • the character segments 38 are produced on the plate 34 by conventional methods such as casting or material-removing methods.
  • seven character segments 38a to 38g are used for printing one character.
  • the segment matrix 40 is shown in FIG. 3.
  • Printing a 3 requires striking segments 38c through 38g, while printing an 8 requires striking all of the character segments.
  • Each character position on the character segment plate 34 contains the seven character segments of the segment matrix according to FIG. 3 and seven print hammers, four of which are assigned to one hammer group and three to the other hammer group.
  • the character segment plate 34 can be made of a relatively inexpensive material in or on which the character segments rela tiv are easy to manufacture. It is therefore possible to replace a worn character segment plate 34 with a new one. In addition, the exchange enables different characters or types of characters to be printed. It is of course also possible to attach the drawing segments to the stop surface 24 of the print hammer 16, although this would increase the maintenance costs.
  • FIG. 4 illustrates the transport of the record carrier 36 and the sensing elements for sensing the speed and the position of the record carrier with respect to a reference point.
  • the timing disk 56 is equipped with position indicators equally spaced apart and is placed on the shaft of the motor 46.
  • the position sensor 58 is adjacent to the clock disk 56 and transmits a signal when each position indicator passes.
  • the light source 60 and the sensor 62 are fastened in the further course of the record carrier transport path 14. When the leading edge 36a of a recording medium reaches the light source 60, it interrupts the light beam, whereby the sensor 62 generates a signal which indicates the passage of the leading edge of a recording medium.
  • FIG. 5 shows the basic elements of the control circuit. For purposes of description, it is assumed that six characters are to be printed on the record carrier. Thus, when using a seven-segment character matrix forty-two hammers and control lines necessary.
  • a start number to be printed is selected by the operator and printed on the first record carrier, while the following numbers are automatically increased.
  • the start numbers are entered into a control processor (not shown) which enters the characters into a 6-byte register 64 via a character line, one byte being assigned to one character.
  • the contents of register 64 are then shifted under clock control over line 68 into segment decoder 66.
  • the decoded segments for the first character are then separately entered into print register 70.
  • the decoded segment signals for the next five characters are entered into print registers 72, 74, 76, 78 and 80.
  • the control processor then inputs a binary number into position counter 82, which completes the control of the print.
  • position counter 82 When the leading edge 36a of the record carrier 36 is sensed, the signal generated by the sensor 62 initiates step-by-step subtraction of the position counter 82. Subsequently, the subtraction is continued by the signals of the position transmitter 58, namely by one for each signal received.
  • the position counter 82 reaches zero, it generates a continuous pulse until reset, which is combined in the AND circuit 84 with the output signal of the position encoder.
  • the output of AND circuit 84 becomes a logic one, the 42 bit sequencer is started.
  • the 42 bit sequencer 86 has forty-two output lines on which a logical one appears in the order from the first to the forty-second line device under control of the signal from the position transmitter. After the position counter 82 has reached the zero count, the start signal of the position encoder thus excites the first output line of the 42-bit sequential circuit 86, whereupon the subsequent signals of the position encoder excite the successive output lines of the 42-bit sequential circuit 86.
  • a separately generated clock pulse is fed to the 42 bit sequencer 86 to control the width of its output pulses. This pulse width control is used to control the hammer pulses.
  • the output lines of the 42 bit sequential circuit 86 are combined in AND circuits 88 with character segment bits of the corresponding print register.
  • the printing of the first character is controlled, for example, by combining the seven output lines of the first print register 70 with the seven output lines of the 42-bit sequential circuit 86 in the AND circuits 88a to 88g.
  • the output lines of each of the remaining print registers 72, 74, 76, 78 and 80 are combined with the following group of seven output lines of the 42 bit sequencer 86. This gives appropriate hammer stroke pulses for the matrix of each of the six characters to be printed.
  • An example should suffice to explain the control for printing a character. It is assumed that a 3 is to be printed first of all characters to be printed on the recording medium 36.
  • the pressure 3 striking the D ruck hammers 16 requires a mark against the segments 38c to 38g on the character segment plate 34th Since the character segments 38a and 38b are not required, the output lines 70a and 70b of the print register 70 are supplied with a logic zero, whereby the AND circuits 88a and 88b are kept ineffective.
  • the remaining AND circuits 38c to 38g are made to be a logic one by the -42 bit sequencer 86 fed. When the last character segment is printed, this is indicated by creating a logic one on the reset line of the 42 bit sequencer 86 as soon as the last of the forty-two output lines receives a one. The reset signal is then used for resetting the position counter 82 and clears all registers which prepare the control means of FIG. 5 for printing the next record carrier.
  • FIGS. 6A and 6B A timing diagram for the various signals and devices for printing character 3 is shown in FIGS. 6A and 6B.
  • An identical clock pulse 90 is in the first line of FIGS. 6A and 6B and serve as a reference for the following control aspects of the printing process.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
  • Handling Of Sheets (AREA)
EP81101366A 1980-03-19 1981-02-25 Imprimante par frappe Expired EP0036112B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US131573 1980-03-19
US06/131,573 US4326814A (en) 1980-03-19 1980-03-19 Document printing device having a platen with character segments thereon

Publications (2)

Publication Number Publication Date
EP0036112A1 true EP0036112A1 (fr) 1981-09-23
EP0036112B1 EP0036112B1 (fr) 1984-07-11

Family

ID=22450046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101366A Expired EP0036112B1 (fr) 1980-03-19 1981-02-25 Imprimante par frappe

Country Status (3)

Country Link
US (1) US4326814A (fr)
EP (1) EP0036112B1 (fr)
DE (1) DE3164642D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540296A (en) * 1981-12-21 1985-09-10 International Business Machines Corporation Bar band intersectional matrix printer
US4592668A (en) * 1982-09-30 1986-06-03 American Can Co. Method for stamping indicia on materials
US4476781A (en) * 1982-09-30 1984-10-16 American Can Company Apparatus for stamping indicia on materials
US5699257A (en) * 1996-05-02 1997-12-16 Micro General Corporation Postage meter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1801763A1 (de) * 1968-10-08 1970-07-09 Olympia Buerosysteme Gmbh Typenraddruckwerk

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB537343A (en) * 1939-12-14 1941-06-18 Kenyon Secretan Improvements in and relating to monogrammic printing devices
US3367469A (en) * 1963-08-29 1968-02-06 Dole Valve Co Digital printer with plural similar print heads
DE1251058B (de) * 1963-10-04 1967-09-28 General Precision Ine , Glendale, CaU (V Si A) Seriendruckwerk
US4082035A (en) * 1972-11-02 1978-04-04 Svenska Dataregister Ab High speed printer having segmented drum
JPS51127824A (en) * 1975-04-28 1976-11-08 Dezain Fuoo Asoshieetsu Printer
US4092921A (en) * 1976-05-27 1978-06-06 Sheldon-Sodeco Printer, Inc. High speed printer module

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1801763A1 (de) * 1968-10-08 1970-07-09 Olympia Buerosysteme Gmbh Typenraddruckwerk

Also Published As

Publication number Publication date
EP0036112B1 (fr) 1984-07-11
DE3164642D1 (en) 1984-08-16
US4326814A (en) 1982-04-27

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