US3894623A - Underline printing control system for use in a typewriter - Google Patents

Underline printing control system for use in a typewriter Download PDF

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Publication number
US3894623A
US3894623A US387007A US38700773A US3894623A US 3894623 A US3894623 A US 3894623A US 387007 A US387007 A US 387007A US 38700773 A US38700773 A US 38700773A US 3894623 A US3894623 A US 3894623A
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United States
Prior art keywords
underline
character
flop
flip
signal
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Expired - Lifetime
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US387007A
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English (en)
Inventor
Syozo Miyawaki
Tetsuro Hirota
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Ricoh Co Ltd
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Ricoh Co Ltd
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Publication date
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Publication of US3894623A publication Critical patent/US3894623A/en
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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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/26—Devices, non-fluid media or methods for cancelling, correcting errors, underscoring or ruling

Definitions

  • ABSTRACT A typewriter underline printing control system which adds adding underline starting and completing code signals in the front and the rear of a given character code group to be underlined, respectively.
  • the underline starting code is red out
  • the characters corresponding to the character code are printed successively, while the back-spacing and underline printing operations are automatically repeated each time said character is printed, until the underline completing code is read out.
  • the back-spacing codes and underline codes corresponding in number to said character code signals are successively stored in the memory.
  • the character code signals are first read out from the memory, and then the characters corresponding to each character code are printed, after which the back-spacing codes are read out from the memory so that the back-spacing operations are carried out the number of times corresponding to the number of said backspacing codes, i.e., the number of character codes.
  • the underline codes are read out from the memory, and then the underline printing is carried out the number of times corresponding to the number of said underline codes, i.e., the number of character code signals.
  • FIG. 1 is a system diagram showing an automatictype typewriter embodying the present invention
  • FIG/2 is a block diagram showing one embodiment of the underline printing control system of the present invention.
  • I FIG. 3 is a timing chart for the embodiment of 'FIG. 2.
  • a keyboard 10 provides various types of character keys'and function keys. Included among the function keys are forwardand back-spacing keys, a line feed key and an underline key. For a better understanding, only underline key UL is shownseparated from the keyboard 10.
  • a control unit 20 serves to control each part of thedevice, i.e., a typewriter. Shown at 30 is a memory and at 40 a printing section. As can be seen from this, when the keys on the keyboard 10 are struck, the code signals corresponding to each key aresuccessively stored via control unit 20 in the memory 30. Thereafter, the code signals stored in the memory are successively read out, decoded and then printed on a recording paper of the printing section 40 as characters corresponding to the aforesaid code signals, under the control of the control unit 20.
  • the underline key UL onthe key board is first depressed, and then the character keys are struck the number of times corresponding to the number of steps requiring underlines, followed by the restoring of thekey UL.
  • 'an underline starting code a character code group of steps of the number required and an underline completing'code are sequentially stored in the memory.
  • the underline starting and completing codes they are prepared in the control unit 20 beforehand, and then the underline starting code is selected in response to the setting operation of the UL key, while the underline completing code is selected in response to the resetting operation of the UL key.
  • the back-spacing instruction as well as the underline instruction for one character will be fed to the printing section 40, successively and automatically, each time a respective character is printed, until the underline completing code is read out.
  • the printing section 40 effects the back-spacing operation for one character automatically, each time a respective character is printed, thus inserting or printing underlines under each character printed.
  • FIG. 2 There is shown in FIG. 2 the arrangement by which, during the time when the aforesaid underline starting code is read out until the underline completing code is read out, the back-spacing instruction and the underline instruction for'one character are automatically issued, each time a character corresponding to each character code is printed.
  • FIG. 3 is a timing chart for the system of FIG. 2 and shows the timing sequence of a single back-space'and underline operation of the embodiment therein.
  • Cycle periods 7T1.” are indicated on the horizontal axis, and within each cycle period the sequential timing points T,T are shown.
  • the designations T T in FIG. 3 also correspond to the input lines T T shown in FIG. 2.
  • the input line T, in FIG. 2 receives a signal at the timing point T shown in FIG. 3 during each cycle period.
  • input lines T T of FIG. 2 each receive signals at their respective timing points T T during each cycle period.
  • FIG. 3 therefore conveys operational system timing information with respect to both cycle periods and timing points within each period.
  • the reading-out operation of the character code for one character from the memory 30 and the printing operation of the character corresponding to said character code are repeated at a cycle period 11'.
  • the content of the memory 30 is read out for each character at the timing T during a cycle period 11, and in the case when the aforesaid content is a character code, the printing operation of the corresponding character will be completed within the cycle 1r.
  • the code which has been read out at the cycle 11', and timing T be an underline starting code. Then, the underline starting codewill be interpreted at the control unit 20, and thus the underline starting signal is selected.
  • the underline starting signal thus selected will be fed via a gate 0, to the flip-flop 11 at the timing T thereby rendering the flip-flop 11 in a set condition.
  • the first character code requiring underline will be read out, and thus the character corresponding to the aforesaid character will beprinted within the cycle 17;, during which time the setting output from the flip-flop 11 will be fed via a gate 6;; to the flip-flop 12 at the timing T thereby rendering said flip-flop 12 in a set condition.
  • a gate G will be energized at the timing T due to the set condition of the flip-flop 12, such that the counter 13 will advance by one step, issuing the back-spacing instruction.
  • a 1 signal at the first digit is utilized as a back-spacing instruction signal, which is to be fed to the printing section 40.
  • the printing section 40 When the back-spacing instruction signal is issued from the counter 13, the printing section 40 will effect the back-spacing operation for one character during the. subsequent cycle 773. Then, the gate 6., will be again energized during the cycle 77;; at timing T.,, by a signal on input line T, such that the counter 13 will advance by one step, the underline instruction signal will be issued, and the underlining operation will begin, as
  • the 1 signal at the second digit of the counter 13 is utilized as an underline instruction signal, which will, be fed to the printing section 40. Accordingly, the underline printing of the.
  • a memory means for storing a series of character code signals, an underline starting code signal added in the front of said series of character code signals and an underline completing code signal added in therear of said series of character code signals;
  • a printing section adapted to successively print the characters corresponding to each character code signal read out from said memory means
  • control unit having a first flip-flop set in response to said underline starting code signal read out from said memory means and reset in response to said underline completing code signal read out from said memory means; and i d. means within said control unit for feeding to said printing section a back-spacing instruction and an underline instruction for one character, each time the character corresponding to each character code signal read out from the memory means is printed, during the time when said first flip-flop is maintained in a set condition.
  • said means within ,said control unit comprises a counter adapted to advance successively in response to the setting output from said first flip-flop, each time the print reset in response to a signal from said counter after said underline instructions signal has been generated, said second flip-flop advancing said counter each time the printing of one character is completed so long as said first flip-flop is in set condition, and said second flipflop resetting said counter in response to the signal pressed, for selecting the underline starting code signal and means for selecting the underline completing code signal when 'said underline key is restored to the initial position.

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  • Accessory Devices And Overall Control Thereof (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Document Processing Apparatus (AREA)
  • Record Information Processing For Printing (AREA)
US387007A 1972-08-09 1973-08-09 Underline printing control system for use in a typewriter Expired - Lifetime US3894623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47079694A JPS5245453B2 (enrdf_load_stackoverflow) 1972-08-09 1972-08-09

Publications (1)

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US3894623A true US3894623A (en) 1975-07-15

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US387007A Expired - Lifetime US3894623A (en) 1972-08-09 1973-08-09 Underline printing control system for use in a typewriter

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US (1) US3894623A (enrdf_load_stackoverflow)
JP (1) JPS5245453B2 (enrdf_load_stackoverflow)
GB (1) GB1380848A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028681A (en) * 1971-09-29 1977-06-07 Ing. C. Olivetti & C., S.P.A. System for automatically processing and printing the contents and the format of a text
US4028680A (en) * 1971-09-29 1977-06-07 Ing. C. Olivetti & C., S.P.A. System for automatically processing and printing the contents and the format of a text
US4084680A (en) * 1975-10-15 1978-04-18 Xerox Corporation Enhanced underscoring methods and means for automatic typewriter and the like employing hammer-type impact printing mechanism
US4495490A (en) * 1981-05-29 1985-01-22 Ibm Corporation Word processor and display
US4955733A (en) * 1988-03-14 1990-09-11 Brother Kogyo Kabushiki Kaisha Printing apparatus with expanded pitch mode and underlining

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2646964C2 (de) * 1976-10-18 1981-09-24 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum Index- und/oder Exponentenabdruck
JPS5711043Y2 (enrdf_load_stackoverflow) * 1977-10-22 1982-03-04
JPS59194827U (ja) * 1983-06-11 1984-12-25 株式会社　セキナ 眼鏡収容用ケ−ス
JPH0772868B2 (ja) * 1986-04-30 1995-08-02 株式会社リコー 情報処理装置

Citations (5)

* 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
US3414103A (en) * 1966-03-31 1968-12-03 Epsco Inc Signal responsive and signal generating means for single element print head typewriter
US3509982A (en) * 1968-02-14 1970-05-05 Ibm Automatic letter underscoring mechanism
US3630336A (en) * 1970-04-15 1971-12-28 Ibm Proportional spacing printer incorporating word underscore control
US3780846A (en) * 1972-08-03 1973-12-25 Ibm Automatic erasing typewriter system

Patent Citations (5)

* 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
US3414103A (en) * 1966-03-31 1968-12-03 Epsco Inc Signal responsive and signal generating means for single element print head typewriter
US3509982A (en) * 1968-02-14 1970-05-05 Ibm Automatic letter underscoring mechanism
US3630336A (en) * 1970-04-15 1971-12-28 Ibm Proportional spacing printer incorporating word underscore control
US3780846A (en) * 1972-08-03 1973-12-25 Ibm Automatic erasing typewriter system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028681A (en) * 1971-09-29 1977-06-07 Ing. C. Olivetti & C., S.P.A. System for automatically processing and printing the contents and the format of a text
US4028680A (en) * 1971-09-29 1977-06-07 Ing. C. Olivetti & C., S.P.A. System for automatically processing and printing the contents and the format of a text
US4084680A (en) * 1975-10-15 1978-04-18 Xerox Corporation Enhanced underscoring methods and means for automatic typewriter and the like employing hammer-type impact printing mechanism
US4495490A (en) * 1981-05-29 1985-01-22 Ibm Corporation Word processor and display
US4955733A (en) * 1988-03-14 1990-09-11 Brother Kogyo Kabushiki Kaisha Printing apparatus with expanded pitch mode and underlining

Also Published As

Publication number Publication date
GB1380848A (en) 1975-01-15
JPS5245453B2 (enrdf_load_stackoverflow) 1977-11-16
JPS4938526A (enrdf_load_stackoverflow) 1974-04-10

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