US3161126A - Variable cycle length in chain printer operation - Google Patents

Variable cycle length in chain printer operation Download PDF

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Publication number
US3161126A
US3161126A US308312A US30831263A US3161126A US 3161126 A US3161126 A US 3161126A US 308312 A US308312 A US 308312A US 30831263 A US30831263 A US 30831263A US 3161126 A US3161126 A US 3161126A
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US
United States
Prior art keywords
character
characters
information
block
counter
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
US308312A
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English (en)
Inventor
Saltz Fred
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
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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
Priority to NL132516D priority Critical patent/NL132516C/xx
Priority to NL273359D priority patent/NL273359A/xx
Priority to DEJ21129A priority patent/DE1222295B/de
Priority to FR884248A priority patent/FR82556E/fr
Priority to GB1014/62A priority patent/GB972558A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to US308312A priority patent/US3161126A/en
Priority to BE652986A priority patent/BE652986A/xx
Application granted granted Critical
Publication of US3161126A publication Critical patent/US3161126A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/08—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by flight printing with type font moving in the direction of the printed line, e.g. chain printers

Definitions

  • 2,993,437 there is disclosed a printing apparatus wherein the printing is effected on-the-ly, that is, printing is efiected from imprint forming elements such as engraved type members which are in motion when the imprintis formed.
  • the type members may be mounted on an endless chain which travels transversely of the paper or other medium upon which the printing is to occur.
  • this paper may have 144 vertical columns defining a plurality or horizontal printing lines with 144 printing areas thereon.
  • the characters to be printed may be stored originally on a magnetic tape in the form of coded digital data.
  • the apparatus contemplates the use of a maximum of 132 characters in a print line.
  • the entire print line of characters is read from the tape and stored in a three-dimensional core matrix.
  • Means are provided for identifying at any particular time during the print cycle what characters are in printing position under each one of the hammers.
  • the uniformly spaced type members on the chain are movable relative to the print line and they are spaced with relation to the hamers so as to be alignable only at separate print positions extending along the print line.
  • Means are provided for moving these members relative to the print positions, preferably at a constant rate of speed, so that a plurality of sub-cycle alignments are et fected whereby successive adjacent print positions not having type members alignable therewith during one subcycle alignment will have print members alignable therewith in one or more subsequent alignments, depending upon the spacing ratio of the type members to print positions. In theinstant case there are 144 possible print areas I each of the hammers.
  • cycle length is directly proportional to a number of sub-cycles equal to the highest num-' ber columns in the print line having a character to be imprinted therein. If this happens to be two columns, then the next print line will start immediately ⁇ following the second sub-cycle associated with the preceding print line. Shifting then from the first print line to the second will occur after the No. 2 columns in the first print line has been printed.
  • the tape 10 is shown as containing a plurality of data tracks.
  • the magnetic beads associated with the data tracks read the characters into the main storage unit 11.
  • This main storage unit 11 may accommodate 144 such characters. It may be a three-dimensional core matrix having, for instance, seven planes.
  • the column 1 character will be located in position 1 in the matrix and the column 2 character in position 2 and so forth.
  • column 1 is mean column 1 of the paper or other medium upon when all of the column character positions of the tape 18 have been scanned, the preset counter 13 contains a count equal to the number of characters loaded into the main storage unit 11. This, of course, is equivalent to the number of characters to be printed in the print line.
  • variable cycle j ated with the main storage unit 11 'read out the character for column 1 they also read out from hammer selection matrix an indication for hammer 1 (H This-indicationis'fed to AND gate 16 and conditions said gate.
  • itcolumn 1 character is an Aand the character under the hammer '1 is an A
  • AND gate 16 is unblocked by thecompare'signal at the. output of the compare unit14.
  • the output. of AND gate 16 provides *the'fire hammer 1 signal and also provides a signal to'OR.
  • the above process continues with a read out of the column characters in storage and a comparison'inthe 1 compare: unit 14 with the character under eachqof the 1 hammers until such time as the count of the preset counter 13 has been reduced to 0.
  • the preset counter is a conventional binary counter, for instance, composed of a plurality of two-state devices
  • the 1 state outputs of each of the trigger stages is connected to OR gate 19.
  • the output of OR gate 19 is fed to inverter 21.
  • the output of OR gate 1% will be up and the output of inverter 21 will be down.
  • the preset counter has reached a 0 count, the output of inverter 21 will go up to provide the shift signal.
  • the count of the preset counter is 0 but means are provided to ignore the up level output from inverter 21 under this circumstance.
  • An apparatus for transferring blocks of information of variable character length from a storage medium to an output device comprising; means for sequentially reading a first block of information to be transferred character by character to said output device, a counter, means for adding one count to said counter each time a character of said first block of information is read, storage means, first means for transferring said characters of said first block of information from said reading means to said storage means, second means for transferring said characters of said first block of information from said storage means to said output device character by character, means for subtracting one count from said counter each time a character of said first block of information has been transferred, and means responsive to a 0 count condition of said counter to enable said transfer apparatus to transfer a second block of information to said output device.
  • said storage means includes a three-dimensional magnetic core matrix, said magnetic core matrix having a number of storage locations equal to the maximum number of characters in one block of data.
  • said means for transferring said blocks of data from said storage means to said output device includes a comparator, said on-the-fiy printer having means for sequentially placing a plurality of printing hammers each representative of a particular character into printing position, means for connecting the character representative of the enabled printing hammer to a first input to said comparator, means for sequentially connecting each of the characters in said storage means to a second input to said comparator, said comparator producing an output when there is correspondence between the characters at the two inputs to said comparator, and means responsive to an output of said comparator for effecting a printing operation.
  • the combination including printer apparatus and .means for shifting said printer apparatus from line to line,
  • said printer apparatus comprising a print mechanism including a plurality of type members movable relative to a print line having a plurality of uniformly spaced print positions, hammer means located along said line, operable for striking said members at said printpositions, said type jacent printpositions so as to be alignable only at separated 'rint ositions along said rint line, means for advancing said type members relative to said print line to effect a plurality of successive sub-cycle alignment sequences, first means for presenting data of intelligence to be recorded and in the sequence in which said type members are alignable, second means for presenting data indicative of the type members alignable during said sequences and in time relation with the presentation of said intelligence data, and means operable in response to an identity between said intelligence data and said type ember data for selectively operating said hammer means whereby certain ones of said type members alignable during said sequences are selectively struck, and said shifting means includes a counter having means to add counts to said counter and having means to subtract counts from said counter, means for successively reading each of
  • said counter includes a plurality of two-state devices connected to count input pulses in a binary manner
  • said means for adding a count to said counter includes a first input connected to advance the count in said counter in one direction and said means for subtracting a count from said counter includes a second input connected to advance the count in said counter in the opposite direction.
  • Apparatus for transferring blocks of information of variable character length from a storage means to an output device comprising, an output device, means for reading a first block of information, a storage means, first transfer means for transferring said characters of said first block of information from said reading means to said storage means, second transfer means for transferring, character by character, characters in said first block from said storage means to said output device, means responsive to the variability in length of said blocks and associated with said second transfer teams for determining when said first block of information has been transferred thereby and means responsive to said last means to enable said transfer means to transfer a second block of information to said output device.
  • Apparatus for transferring blocks of information of variable character length from a storage device to a cyclically operated output device comprising; a cyclically operated output device, means for read ing a first block of information, a storage means, first transfer means for transferring said characters of said first block of information from said reading means to said storage means, second transfer means for transferring, character by character, characters in said first block from vice, means responsive to the variability in length of said blocks and associated with said second transfer means for determining when said first block of information has been transferred by said second transfer means, and means responsive to said last means to enable said transfer means to transfer a second block of information to said cyclically operated output device to thereby vary the cycle of operation of said cyclically operated output device as a function of the character length of said blocksj 9.
  • Apparatus for transferring blocks of information of variable character length from a storage means to a cyclically operated output device comprising; a cyclically operated cutput'device, means for reading said blocks of inf rmation, a storage means, first ransfer means for transferring saidblocks of information from said reading means to s'aidstorage means, sec- 0nd transfer means for transferring, character by charsaid storage means to said cyclically operated output deacter, characters in a block of information from said storage means to said output device, means responsive to the variability in length or" said blocks and associated with said second transfer means for determining when a block of information has been transferred by said second transfer means, and means responsive to said last means for terminating the cycle of operation of said output device upon the transfer of a block of information thereto to enable said transfer means to transfer additional blocks of information to said output device.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Record Information Processing For Printing (AREA)
  • Electronic Switches (AREA)
US308312A 1961-01-12 1963-09-11 Variable cycle length in chain printer operation Expired - Lifetime US3161126A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL132516D NL132516C (fr) 1961-01-12
NL273359D NL273359A (fr) 1961-01-12
DEJ21129A DE1222295B (de) 1961-01-12 1962-01-04 Verfahren zum Anpassen der Druckzykluslaenge fuer eine Druckzeile an die Anzahl der in einer Zeile zu druckenden Zeichen bei Schnelldruckern datenverarbeitender Systeme
FR884248A FR82556E (fr) 1961-01-12 1962-01-09 Dispositif d'impression à vitesse élevée
GB1014/62A GB972558A (en) 1961-01-12 1962-01-11 Apparatus for transferring blocks of data
US308312A US3161126A (en) 1961-01-12 1963-09-11 Variable cycle length in chain printer operation
BE652986A BE652986A (fr) 1961-01-12 1964-09-11

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8230861A 1961-01-12 1961-01-12
US308312A US3161126A (en) 1961-01-12 1963-09-11 Variable cycle length in chain printer operation
BE652986A BE652986A (fr) 1961-01-12 1964-09-11

Publications (1)

Publication Number Publication Date
US3161126A true US3161126A (en) 1964-12-15

Family

ID=27159018

Family Applications (1)

Application Number Title Priority Date Filing Date
US308312A Expired - Lifetime US3161126A (en) 1961-01-12 1963-09-11 Variable cycle length in chain printer operation

Country Status (5)

Country Link
US (1) US3161126A (fr)
BE (1) BE652986A (fr)
DE (1) DE1222295B (fr)
GB (1) GB972558A (fr)
NL (2) NL132516C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1294713B (de) * 1966-07-20 1969-05-08 Kienzle Apparate Gmbh Druckeinrichtung fuer fliegenden Druck mit einer staendig umlaufenden Typenwalze
US3444529A (en) * 1967-01-03 1969-05-13 Honeywell Inc Control adapter assembly for a chain printer
US3454147A (en) * 1966-06-23 1969-07-08 Walther Bueromasch Gmbh Key locking circuit for a keyboard operated machine
JPS5025776B1 (fr) * 1968-05-15 1975-08-26
EP0097757A2 (fr) * 1982-06-30 1984-01-11 International Business Machines Corporation Imprimante matricielle par points

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900003351B1 (ko) * 1987-12-30 1990-05-16 삼성전자 주식회사 금전등록기용 프린터의 고속인자방법

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL234580A (fr) * 1957-12-27

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454147A (en) * 1966-06-23 1969-07-08 Walther Bueromasch Gmbh Key locking circuit for a keyboard operated machine
DE1294713B (de) * 1966-07-20 1969-05-08 Kienzle Apparate Gmbh Druckeinrichtung fuer fliegenden Druck mit einer staendig umlaufenden Typenwalze
US3444529A (en) * 1967-01-03 1969-05-13 Honeywell Inc Control adapter assembly for a chain printer
JPS5025776B1 (fr) * 1968-05-15 1975-08-26
EP0097757A2 (fr) * 1982-06-30 1984-01-11 International Business Machines Corporation Imprimante matricielle par points
US4448123A (en) * 1982-06-30 1984-05-15 International Business Machines Variable speed printing for dot matrix printers
EP0097757A3 (en) * 1982-06-30 1984-12-05 International Business Machines Corporation Dot matrix printing apparatus

Also Published As

Publication number Publication date
NL273359A (fr)
GB972558A (en) 1964-10-14
BE652986A (fr) 1964-12-31
NL132516C (fr)
DE1222295B (de) 1966-08-04

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