US3885663A - Control device for tabulation printing - Google Patents

Control device for tabulation printing Download PDF

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Publication number
US3885663A
US3885663A US422550A US42255073A US3885663A US 3885663 A US3885663 A US 3885663A US 422550 A US422550 A US 422550A US 42255073 A US42255073 A US 42255073A US 3885663 A US3885663 A US 3885663A
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Prior art keywords
printing
tabset
signal
circuit
data
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US422550A
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English (en)
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Masahiko Suzuki
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Casio Computer Co Ltd
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Casio Computer Co Ltd
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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
    • B41J21/00—Column, tabular or like printing arrangements; Means for centralising short lines
    • B41J21/14—Column, tabular or like printing arrangements; Means for centralising short lines characterised by denominational arrangements

Definitions

  • a control device for tabulation printing which comprises a tabset register for storing a plurality of tabset position signals defining the columns of a printing sheet in which tabulation printing is to be effected; a memory device for storing a signal denoting the lower order tabset position of a printing column by reading out the tabset position signal from the tabset register and further storing a signal representing the position in which the highest order of a printing data is to be recorded, with reference to the aforesaid restored tabset position signal; a discriminator for generating a first output signal where a printing data only consists of digits and a second output signal where a printing data includes at least a character; and a control device for causing the lowest order of a data consisting of digits alone to be printed on the lower order tabset
  • FIG. 2A PRINTING CONTROL j a e J I I 1y III 11 R Q s Q P 37 s13 HOLDING CIRCUIT 814(PRINTING COMPLETION) SHEET I iliD 42 FIG. 2A
  • a data consisting of digits alone or a data including at least a character is printed in a designated column on a tabulation printing sheet, for example, a tabulated bill, by means of an electronic calculator, then tabset positions defining the columns of a tabulated bill are first stored in a memory device.
  • the higher order tabset position (later described) of a column requiring printing is selected by designating the address of an input data being printed.
  • a printing head is driven up to the selected tabset position, and the aforesaid input data begins to be printed in the designated column with the highest order of said data disposed on the higher order tabset position side of said column.
  • the control device of this invention comprises an input means of a printing data; a memory device for temporarily storing a printing data delivered from the input means; a printing means for printing the temporarily stored data in the designated column of a printing sheet; a tabset register for storing a plurality of tabset position signals defining the columns of the printing sheet; a discriminator for generating a first signal Where the printing data consists of digits alone and a second signal where the printing data includes at least a character; a means for reading out a signal denoting the lower order tabset position of the designated column from the tabset register and generating a signal specifying the position in which the highest order indication of the temporarily stored data is to be printed, with reference to the read out signal and a signal corresponding to the number of orders of the printing data; first control means for controlling the printing means with reference to the first signal and a signal designating the printing position of the highest order such that where the input data consists of digits alone, the highest order digit is printed in the foremost printing
  • the control device of this invention automatically attains required printing by very simple operations of, for example, storing tabset signals in the tabset register, supplying printing data and judging by a discriminator whether the printing data consists of digits alone or the previously defined character-containing type, thereby eliminating the aforementioned drawbacks of the prior art by simple construction and easy, reliable control of printing.
  • FIGS. 1A and 1B together are a block circuit diagram of a tabulation printing control device according to an embodiment of this invention.
  • FIG. 2A shows the arrangement of an embodiment of a discriminator
  • FIG. 2B is a table of coded numerical figures and characters constituting printing data supplied to the discriminator
  • FIG. 2C is a detailed diagram of the printing control circuit of FIGS. 1A and 1B;
  • FIG. 3 illustrates a tabulated bill in which printing was made using the control device of the invention.
  • FIGS. 4A-4I show the manner in which the registers in FIGS. 1A and 1B are stored with signals when data are printed in the tabulated bill of FIG. 3.
  • the control device of FIGS. 1A and 1B comprises a keyboard 10 for supplying a printing data; a buffer register 11 for temporarily storing the supplied printing data; a printing section 12 for printing the data read out from the buffer register 11 on a printing sheet, for example, a tabulated bill (now shown); a tabset register 13; a printing position register 14 for storing the extent of printing carried out by the printing section 12; a tabset control register 15 and a discriminator 16 all arranged in the later described relationship.
  • the tabset register 13 is stored with a plurality of tabset position signals defining the respective printing columns of a tabulated bill, namely, a number of bits, for example, bits at maximum, as shown in FIG. 4A, corresponding to the number of printed indications or digits and/or characters constituting one horizontal line of printing carried out by the printing section 12.
  • 3 printing position register 14 is interlockingly operated with the tabset register 13 and has the same storing capacity as the latter.
  • Both registers 13 and 14 consist of, for example, shift registers actuated in synchronous relationship and respectively have a cyclic shifting circuit.
  • An output signal from the printing position register 14 is supplied to an AND circuit 17, together with a tabset position selecting signal S1 delivered from the keyboard 10.
  • An output signal from the AND circuit 17 is conducted to the tabset register 13 through an OR circuit 18.
  • a tabset space signal S2 obtained from the keyboard is supplied as a shiftup signal 53a to the printing position register 14 through an OR circuit 19, an output signal from which in turn is supplied to the printing section 12 as a printing position-advancing signal (or stepping signal) S3b.
  • a carriage return signal S4 delivered from the keyboard 10 is transmitted to the printing position register 14 as a carriage return signal 34a for shifting down the bits stored therein, and also to the printing section 12 as a carriage return instruction signal 84b.
  • the printing section 12 gives forth a carriage return end signal (or a carriage return completion signal) S5 corresponding to the carriage return instruction signal S4b, said carriage return end signal SS being delivered to the set terminal S of a flip-flop circuit 20.
  • Output signals from the registers 13 and 14 are carried to an AND circuit 21. Where both output signals coincide with each other, said AND circuit 21 generates an output signal which in turn is transmitted to the reset terminal R of the flip-flop circuit to reset it.
  • An output set signal from the flipflop circuit 20 is supplied to the OR circuit 19.
  • Output signals from the tabset register 13 and printing position register 14 are delivered to an AND circuit 22, an output signal from which is supplied to the set terminal S of a flip-flop circuit 23, an output set signal from which is carried to a delay circuit 24 consisting of a delayed flip-flop circuit for delaying said set signal for one bit shift time, for example, of the tabset register 13.
  • An output signal from the delay circuit 24 is transmitted to an AND circuit 25 together with the succeeding output signal from the tabset register 13.
  • An output signal from the AND circuit 25 is conducted to the reset terminal R of the flip-flop circuit 23, as well as to one input terminal of an AND circuit 26, to the other input terminal of which a signal S6 denoting the detection of the stop of the printing head after the carriage return is supplied as a gate signal from the printing section 12 through an OR circuit 27.
  • An output signal from the AND circuit 26 is delivered to the input terminal of the tabset control register 15 through an OR circuit 28.
  • the tabset control register 15 consists of a shift register capable of storing as many orders as the tabset register 13.
  • a one-bit delay circuit 29, AND circuit and OR circuit 28 jointly constitute a cyclic shifting circuit.
  • An output signal from the OR circuit 27 is carried as a gate signal to one inputterminal of the AND circuit 30 through an inverter 31.
  • a signal S7 denoting a printing data is supplied from the keyboard 10 to the buffer register 11 to be temporarily stored therein.
  • the buffer register 11 is provided with a readout circuit 32 for reading out the foremost order of the temporarily stored data.
  • a data read out by said readout circuit 32 is conducted as a printing data to the printing section 12 through an AND circuit 33.
  • Said foremost order readout circuit 32 may be formed by the known process. This process is already set forth in FIGS. 1 and 2 appended to the US. Pat. No. 3,351,917 entitled Information storage and retrieval system having a dynamic memory device.
  • An input data signal S7 is also supplied to the discriminator 16 which generates a first signal S9 where an input data consists of digits alone and a second signal S10 where the input data is the charactercontaining type.
  • This discriminator 16 consists, as
  • FIG. 2A showh in FIG. 2A, of a bit detecting circuit 34 which produces a signal S11 when it is detected that thebit of any of the particular orders of an input data denotes l (the discriminator 16 is suppliedwith an input data signal S7 represented by the codes of, for example,
  • FIG. 2B illustrates numerical figures and characters represented by bits supplied to the bit detecting circuit 34. Where the bits collectively represent a numeral, then both fifth and sixth bits of the aforesaid particular orders represent 0 and the flip-flop circuit 35 remains in a reset condition, namely, the first signal S9 denotes I. Where the bits collectively shows a character, then at least one of the fifth and sixth bits,
  • the flip-flop-circuit 35 is brought into a set condition, namely, the second signal S10 shows 1.
  • a tab operation signal S12 obtained by the operation of the keyboard 10 gives a control instruction to a printing control circuit 36.
  • the detailed arrangement of this printing control circuit 36 is indicated in FIG. 2C.
  • a tab operation signal S12 is supplied to a delay flip-flop circuit 361
  • the printing control circuit 36 gives forth an output signal], which in. turn is conducted to an AND circuit 37 together with the first output signal S9 from the discriminator 16.
  • An output signal from the AND circuit 37 is transmitted to the set terminal S of a flip-flop circuit 38 to set it.
  • This flip-flop circuit 38 is reset by an output signal delivered from an AND circuit 47 when coincidence takes place between output signals from the printing position register 14 and.
  • An output set signal from the flip-flop circuit 38 is supplied as a shiftup signal 53a, to the printing position register 14 and as a printing position-advancing signal S312 to the printing section 12 through the OR circuits 39 and 19.
  • An output signal from the AND circuit 40 is supplied as a shiftup signal 830 to the printing position register 14 and as a printing positionadvancing signal 83b to the printing section 12.
  • the OR circuit 362 included in the printing control circuit 36 is supplied with an output reset signal from the flip-flop circuit 38 and output signals from the aforesaid AND circuit 40 and the later described AND circuit 41.
  • an output signal from the flip-flop circuit 38 is passed through the indicated head portion extraction circuit to I have its head portion alone supplied to the OR circuit 362.
  • This head portion extraction circuit consists of an AND circuit 365 having one input terminal supplied with an output reset signal from the flip-flop circuit 38 and the other input terminal supplied with a signal produced by delaying said output reset signal in a delay cir-. cuit 363 and thereafter passing it through an inverter 364.
  • an output signal from the OR circuit 362 is delivered to a delayed flip-flop circuit 366, an output signal II is given forth therefrom in succession to the output signal I, and transmitted as a gate signal to the input terminal of the AND circuit 33.
  • an output signal from the delayed flip-flop circuit 366 passes through a delayed flip-flop circuit 367, an output signal III is generated from the latter circuit 367 in succession to the output signalll, and conducted to the input terminal of the OR circuit 39.
  • an output signal from the delayed flip-flop circuit 367 is conducted through a delayed flip-flop circuit 368, an output signal IV is produced from the latter circuit 368 in succession to the output signal III.
  • the output signal IV is delivered to the input terminals of the AND circuits 41 and 42.
  • the printing control circuit 36 generates the output signals II, III and IV in succession, each time said circuit 36 is supplied with an output signal S13 from the AND circuit 41.
  • An output signal from the AND circuit 42 is supplied to the OR circuit 27 as a printing end signal S14 and also to the discriminator 16 as a reset signal.
  • One input terminal of the AND circuit 41 is supplied with an output signal from a holding circuit 43 through an inverter 44 and one input terminal of the AND circuit 42 is directly supplied with the same output of the holding circuit 43.
  • This holding circuit 43 holds an output signal from the delay circuit 24, until the stored data is cleared, for example, by a shift end pulse delivered per shift cycle in the tabset register 13.
  • a data common signal S15 is supplied as a gate signal to one input terminal of an AND circuit 46 with its timing controlled by a timing control circuit 45 during one shift cycle in the tabset control register 15.
  • the other input terminal of the AND circuit 46 is supplied with an output signal from the tabset control register 15.
  • An output signal from the AND circuit 46 is transmitted to the input side of the tabset control register 15 through the OR circuit 28, in which, therefore, a quick cyclic shifting circuit is formed.
  • the tabset register 13 is stored, as in FIG. 4A, with signals denoting, for example, tabset positions 10, 20 80 in the tabulated bill of FIG. 3. These tabset positions are stored in the tabset register 13 by operation of the tabset space key and tabset position-selecting key on the keyboard 10. Key depression generates a tabset space signal S2, which in turn is supplied as a printing position-advancing signal 83b to the printing section 12 through the OR circuit 19 so as to shift the printing position to the right side and also as the shiftup signal S3a which causes the bit stored in the foremost position in the printing position register 14 to be carried to the indicated right side (FIG.
  • the bit stored in the printing position register 14 and the printing position are always carried along in synchronization, so that the position of the stored bit occupies an order corresponding to the printing position.
  • the tabset register 13 isto be stored with a tabset position signal corresponding to, for example, the tabset position in a tabulated bill, then the printing head is pushed forward to said tabset position 10 by the tabset space signal S2, namely, the printing positionadvancing signal S3b. Under this condition, the tabset position-selecting signal S1 is supplied as a gate signal to the AND circuit 17.
  • the printing position register 14 is supplied with a shiftup signal 83a through the OR circuit 19.
  • the printing section 12 is also supplied with a printing position step up signal 83b for advancing the printing head to the right.
  • the printing head and the bit stored in the printing position register 14 are shifted through the same number of orders.
  • the AND circuits 21 and 22 generate an output signal.
  • An output signal from the AND circuit 21 resets the flip-flop circuit 20 to stop the rightward advance of the printing head, while an output signal from the AND circuit 22 sets the flip-flop circuit 23.
  • An output signal from the flip-flop circuit 23 thus set is delayed by a one-bit shifting time and supplied as a gate signal to the AND circuit 25.
  • the AND circuit 25 is supplied with a signal denoting the tabset position 20 in succession to a signal representing the tabset position 10 in the tabset register 13 (an output signal causing the flip-flop circuit to be set)
  • an output signal from the delay circuit 24 is delivered to the AND circuit 25, which in turn generates an output signal.
  • One input terminal of the AND circuit 26 is already supplied with a signal S6 generated by the printing section 12 when the printing head is brought to rest after carriage return.
  • the AND circuit 26 When, therefore, the other input terminal of the AND circuit 26 is supplied with an output signal from the AND circuit 25, then the AND circuit 26 gives forth an output signal which denotes the tabset position 20 in the tabset register 13. Said output signal denoting the tabset position 20 is written in the tabset control register 15, while data stored therein is extinguished by an output signal from the inverter 31 (FIG. 4C). As seen from FIG. 4A, the foremost or extreme left column C1 is defined between the higher order tabset position 10 and the lower order tabset position 20, the succeeding column C2 between the higher order tabset position 20 and the lower order tabset position 30 and so forth. I
  • the subject control device is supplied with a printing data signal S7 denoting a number 145 through key depression on the keyboard 10.
  • Said data signal S7 is stored in the output buffer register 11,
  • a data common signal S15 corresponding to the number of orders included in the printing data is supplied as a gate signal to the AND circuit 46 through the timing control circuit 45, causing a quick cyclic shifting circuit free from the delay circuit 29 to be formed in the tabset control register 15.
  • a plurality of bits representing the three orders of the printing data 145 are recorded ahead of the bit denoting the tabset position 20 which was previously stored through the AND circuit 26, thus displaying the stored condition of FIG. 4D.
  • the printing data signal S7 is conducted to the discriminator 16 indicated in FIG. 2A.
  • said signal S7 denotes a numerical data as shown in FIG. 2B
  • the bits of the fifth and sixth orders are 0 and consequently a signal $11 from the bit-detecting circuit 34 also indicates 0.
  • the flip-flop circuit 35 reset by the printing end signal or printing completion signal S14 gives forth a reset signal S9 of 1.
  • a signal S12 is generated by tab operation in the keyboard 10 after the input operation of data 145
  • a signal I is first delivered from the printing control circuit 36.
  • This signal I sets the flip-flop circuit 38, an output set signal from which is transmitted to the printing section 12 as a printing head-advancing signal 83b and also to the printing position register 14 as a shiftup signal S3a.
  • the printing head As well as the bit stored in the printing position register 14, advances to the right, then the position of said bit in the printing position register 14 and that of the foremost one of a plurality of bits stored in the tabset control register 15 coincide with each other.
  • the AND circuit 45 produces an output signal to reset the flip-flop circuit 38, thereby stopping the rightward advance of the printing head and the rightward shifting in the printing position register 14.
  • the printing head is set at the foremost one of the bits (FIG. 4D) stored in the tabset control register 15, namely, at the point where the first digit 1 of the numerical data 145 is to be printed.
  • the position of the bit stored in the printing position register 14 at this time is indicated in FIG. 4E.
  • the printing control circuit 36 When the printing head takes the above-mentioned position, the printing control circuit 36 generates an output signal II upon receipt of an output reset signal from the flip-flop circuit 38. Said output signal II is supplied as a gate signal to the AND circuit 33.
  • the foremost order readout circuit 32 is stored with a signal denoting the first digit 1 of the input data 145 drawn out from the buffer register 11.
  • the AND circuit 33 is gated by the signal II, a signal instructing the printing of the first digit 1 is delivered to the printing section 12, causing the printing control circuit 36 gives forth an output signal IV, which in turn is deliveredto the AND circuits 41 and 42.
  • the holding circuit43 produces an output signal of 0 and the AND circuit 41 gives forth an output signal S13 by the action of the inverter 44, causing the printing con.- trol circuit 36 to generate output signals II, III and IV again in succession.
  • the signal II is delivered to the AND circuit 33, then a signal denoting the second digit 4 of the input data of is supplied to the printing section 12, causing the digit 4 to be printed immediately after the previously impressed digit 1.
  • the bit stored in the printing position register 14 also advances rightward similarly for a distance of one order as shown in FIG. 46. Since, under this condition, coincidence does not take place between the position of the bit stored in the tabset register 13 and that of the bit stored in the printing position register 14, the printing control.
  • circuit 36 gives forth output signals II, III and IVin turn upon receipt of an output signal S13.
  • the last digit 5 of the input data 145 already storedin the foremost order readout circuit 32 is drawn outby the signal II for printing.
  • the signal III further shifts the printing head by one order, causing the bit stored in the printing position register 14 to be brought to the position indicated in FIG.
  • the AND circuit 30 produces an output signal of 0, the data stored in the tabset control register 15 is extinguished and the gate of the AND circuit 26 is opened to cause a signal denotingthe tabset position 30 following the tabset position 20 (said tabset position 30 represents the lower order tabset position of the second column C2 of FIG. 4.) to be written in the tabset control register 15 (FIG. 41), thus providing a condition ready for printing in the second column C2.
  • the first output signal S9 from the discriminator 16 is in the state of I.
  • the printing control circuit 36 produces a signal I, which effects the one-order rightward advance of the printing head, as well as of the bit registered in the printing position register 14. Since the flip-flop circuit 38 is not set as described above, the printing head is made to advance only for a distance of one order but not continuously.
  • the printing control circuit 36 Upon the one-order shift of the printing head, the printing control circuit 36 generates an output II which causes the character A of the foremost order read out from the buffer register 11 by the foremost order readout circuit 32 to be printed. Thereafter, upon receipt of an output signal III, the printing head further advances rightward by one order.
  • the printing control circuit 36 produces an output signal IV; the holding circuit 43 generates an output signal of 0. Consequently said printing control circuit 36 gives forth again an output signal II to cause the character S to be printed immediately after the character A. Printing is thus continued until the final character D is impressed.
  • the printing control circuit 36 repeatedly generates the signals II, III and IV until an output signal from the holding circuit 43 indicates the state of l causing the printing head to travel rightward stepwise, namely, by one order each time.
  • the printing section 12 Upon completion of printing, the printing section 12 is not supplied with any other fresh input data.
  • the printing head reaches the lower order tabset position 30, a printing end signal S14 is issued to stop the printing head, and the flip-flop circuit 35 of the discriminator 16 is reset, thus providing a condition ready for printing in the third column C3.
  • the foregoining embodiment relates to the case where the position in which the foremost order of an input data was to be printed was defined by storing the tabset control register 15 with additional bits corresponding to the number of orders of the input data at a higher order point than, namely, on the left side of the bit already stored therein.
  • the abovementioned operation may be replaced simply by shifting the bit stored in the tabset control register 15 to a higher order position.
  • the tabset control register 15 may be substituted by a counter.
  • the subject control device may be directly supplied with data obtained from a computer without using a keyboard. This invention may be practised using a counter instead of the printing position register 14.
  • a control device for tabulation printing comprising an input means of a printing data; a memory device for temporarily storing a printing data supplied by the input means; a printing means for printing the temporarily stored data in the designated column of a printing sheet; a tabset register for storing a plurality of tabset position signals defining the columns of the printing sheet; a discriminator for generating a first signal where the printing data only consists of digits and a second signal where the printing data includes at least a character; a means for reading out a signal denoting the lower order tabset position of the designated column from the tabset register and generating a signal designating the position where the foremost order of the temporarily stored data is to be printed, with reference to the readout signal and a signal denoting the number of orders of the printing data; a control means for controlling the printing means with reference to the first signal and a signal designating the printing position of the foremost order such that where the input data only consists of digits, the highest order digit is impressed in the foremost printing position of the designated column of the

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US422550A 1972-12-13 1973-12-06 Control device for tabulation printing Expired - Lifetime US3885663A (en)

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JP12440772A JPS5311170B2 (US20030199744A1-20031023-C00003.png) 1972-12-13 1972-12-13

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US (1) US3885663A (US20030199744A1-20031023-C00003.png)
JP (1) JPS5311170B2 (US20030199744A1-20031023-C00003.png)
CA (1) CA994918A (US20030199744A1-20031023-C00003.png)
CH (1) CH580307A5 (US20030199744A1-20031023-C00003.png)
FR (1) FR2210940A5 (US20030199744A1-20031023-C00003.png)
GB (1) GB1438392A (US20030199744A1-20031023-C00003.png)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952852A (en) * 1975-01-22 1976-04-27 International Business Machines Corporation Column format control system
US4004675A (en) * 1974-01-25 1977-01-25 Siemens Aktiengesellschaft Tabulator device for typewriters and the like
US4026402A (en) * 1975-07-28 1977-05-31 Centronics Data Computer Corporation Incremental line printer
US4031996A (en) * 1975-12-31 1977-06-28 International Business Machines Corporation Tab repositioning system
US4045780A (en) * 1972-06-22 1977-08-30 Casio Computer Co., Ltd. Apparatus for arithmetically processing bill records
US4051945A (en) * 1974-08-12 1977-10-04 Nippon Telegraph And Telephone Public Corporation Electronic tabulator for high speed printers
US4169685A (en) * 1977-12-22 1979-10-02 International Business Machines Corporation Tab layout display for a typewriter
US4350455A (en) * 1979-12-26 1982-09-21 International Business Machines Corp. High speed basic and condensed tab racks
US4548520A (en) * 1983-04-12 1985-10-22 Brother Kogyo Kabushiki Kaisha Electronic typewriter
US4679952A (en) * 1984-12-21 1987-07-14 Casio Computer Co., Ltd. Printing apparatus including tab position placement control

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5154331A (en) * 1974-11-07 1976-05-13 Takachiho Koeki Kk Deetano hyojiketashiteihoshiki

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063537A (en) * 1960-07-05 1962-11-13 Ibm Format control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063537A (en) * 1960-07-05 1962-11-13 Ibm Format control device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045780A (en) * 1972-06-22 1977-08-30 Casio Computer Co., Ltd. Apparatus for arithmetically processing bill records
US4004675A (en) * 1974-01-25 1977-01-25 Siemens Aktiengesellschaft Tabulator device for typewriters and the like
US4051945A (en) * 1974-08-12 1977-10-04 Nippon Telegraph And Telephone Public Corporation Electronic tabulator for high speed printers
US3952852A (en) * 1975-01-22 1976-04-27 International Business Machines Corporation Column format control system
US4026402A (en) * 1975-07-28 1977-05-31 Centronics Data Computer Corporation Incremental line printer
US4031996A (en) * 1975-12-31 1977-06-28 International Business Machines Corporation Tab repositioning system
US4169685A (en) * 1977-12-22 1979-10-02 International Business Machines Corporation Tab layout display for a typewriter
US4350455A (en) * 1979-12-26 1982-09-21 International Business Machines Corp. High speed basic and condensed tab racks
US4548520A (en) * 1983-04-12 1985-10-22 Brother Kogyo Kabushiki Kaisha Electronic typewriter
US4679952A (en) * 1984-12-21 1987-07-14 Casio Computer Co., Ltd. Printing apparatus including tab position placement control

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JPS5311170B2 (US20030199744A1-20031023-C00003.png) 1978-04-19
CA994918A (en) 1976-08-10
FR2210940A5 (US20030199744A1-20031023-C00003.png) 1974-07-12
GB1438392A (en) 1976-06-03
CH580307A5 (US20030199744A1-20031023-C00003.png) 1976-09-30
DE2361853B2 (de) 1977-01-13
JPS4983327A (US20030199744A1-20031023-C00003.png) 1974-08-10
DE2361853A1 (de) 1974-07-04

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