GB1270919A - Printer - Google Patents

Printer

Info

Publication number
GB1270919A
GB1270919A GB56543/70A GB5654370A GB1270919A GB 1270919 A GB1270919 A GB 1270919A GB 56543/70 A GB56543/70 A GB 56543/70A GB 5654370 A GB5654370 A GB 5654370A GB 1270919 A GB1270919 A GB 1270919A
Authority
GB
United Kingdom
Prior art keywords
spacing
cam
profile
link
space
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
GB56543/70A
Inventor
William Albertus Abell Jr
Charles Milton Isaacs
Jerome Beard O'daniel
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 GB1270919A publication Critical patent/GB1270919A/en
Expired legal-status Critical Current

Links

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
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/60—Auxiliary feed or adjustment devices
    • B41J19/62—Auxiliary feed or adjustment devices for back spacing
    • 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
    • B41J29/54—Locking devices applied to printing mechanisms
    • B41J29/58—Locking devices applied to printing mechanisms and automatically actuated
    • B41J29/64—Locking devices applied to printing mechanisms and automatically actuated by a function of the printer to lock the keyboard
    • 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
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/92—Impact adjustment; Means to give uniformity of impression
    • B41J7/94—Character-by-character adjustment

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
  • Common Mechanisms (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

1,270,919. Typewriters. INTERNATIONAL BUSINESS MACHINES CORP. 27 Nov., 1970 [22 Dec., 1969], No. 56543/70. Heading B6F. Variable impression; back-spacing.-A variable impression mechanism as described in Specification 1,187,507, has incorporated therewith a back-spacing mechanism. The yoke 70 axially moves the cam-follower roller 50 into alignment with three profiles (61, 62 and 63, Fig. 2) of cam 60, to effect respectively a highprint velocity, a low-print velocity and a noprint velocity. Cam 60 additionally has a backspacing profile (64). Movement of the drive link 113 of the back-spacing mechanism (Fig. 3), is generated by a cam follower roller 117 that engages the profile (64) of cam 60 and is contiolled by a tab 79 that is carried by, and thus is responsive to the position of the yoke 70. During each cycle, print shaft 16 will rotate to drive cam follower 117. This motion will be ineffective, since the lower end 118 of a floating link 119 supporting follower 117, is free to waste the motion generated by the cam profile 64. When the yoke 70 is displaced to its back-space selecting position, wherein the follower roller 50 tracks on cam track (69) of profile (63), the tab 79 becomes aligned with the end 118 of floating link 119, thereby restraining its movement. The back-spacing profile (64) thereupon generates a motion of the link 113 to operate the back-spacing mechanism, but since the follower roller 50 is tracking on cam profile (63), no print stroke takes place. Letter-spacing; back-spacing.-Letter-spacing of the type-carriage 20 is accomplished by a mechanism like that described in Specification 983,549. As escapement pawl (23) is pulled outwardly, surface (23a Fig. 3) contacts a tab (110b) on back-space pawl (110) causing it to be pulled from engagement with rack 17. After letter-spacing under the influence of a main spring, both pawls (23 and 110) re-engage the rack 17. The back-space operation is generated by movement of the link 113, which causes clockwise pivoting of a bell-crank 114 about a stud 115 fixed to the carriage 20. The end (114a) of bell-crank (114) carries a pin (116) that engages an escapement permitting slot (110C) in the back-space pawl (110). Since pin (116) cannot move laterally with the pawl (110) engaging rack 17, the motion of link 113 will cause the stud (115) to move, carrying with it the carriage 20 back one letter space.
GB56543/70A 1969-12-22 1970-11-27 Printer Expired GB1270919A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88702769A 1969-12-22 1969-12-22

Publications (1)

Publication Number Publication Date
GB1270919A true GB1270919A (en) 1972-04-19

Family

ID=25390300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56543/70A Expired GB1270919A (en) 1969-12-22 1970-11-27 Printer

Country Status (5)

Country Link
US (1) US3618736A (en)
JP (1) JPS4947523B1 (en)
BE (1) BE757744R (en)
FR (1) FR2073486B2 (en)
GB (1) GB1270919A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH534054A (en) * 1971-02-12 1973-02-28 Paillard Sa Single Typewriter Selection Mechanism
US3980169A (en) * 1971-10-01 1976-09-14 Triumph Werke Nurnberg A.G. Impact control for single element printer
DE2250269C2 (en) * 1972-10-13 1974-05-16 Olympia Werke Ag, 2940 Wilhelmshaven Control device for suppressing the type pressure in power-driven key-operated and memory-controllable typewriters
US4192619A (en) * 1974-07-29 1980-03-11 Redactron Corporation Electronically controlled printer system
US4022312A (en) * 1975-12-24 1977-05-10 International Business Machines Corporation Semi-automatic centering control
US4066160A (en) * 1976-03-17 1978-01-03 Lee Kuo Liang Single element imprinting assembly with inertially and kinematically independent motion controls
CH618631A5 (en) * 1978-02-07 1980-08-15 Hermes Precisa International
US4351618A (en) * 1979-12-26 1982-09-28 International Business Machines Corporation Selection controlled print impression control for single element impact printers
JPS5738177A (en) * 1980-08-11 1982-03-02 Serabisu Sa Back space device for typewriter
US4502798A (en) * 1983-01-14 1985-03-05 Holmes Lawrence Jr Typewriter baseplate attachment enabling use of print keys for non-print operations
US5481398A (en) * 1994-01-13 1996-01-02 Schoonscan, Inc. Temperature stabilization means for imaging output recorder
US5565906A (en) * 1994-01-13 1996-10-15 Schoonscan, Inc. Clocking means for bandwise imaging device
US5684620A (en) * 1996-01-30 1997-11-04 Schoonscan, Inc. High resolution imaging system and method of imaging using the same
US9813474B2 (en) * 2014-03-07 2017-11-07 Ericsson Ab ABR video white spot coverage system and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366215A (en) * 1965-07-28 1968-01-30 Ibm Single rack backspace
US3382963A (en) * 1966-08-17 1968-05-14 Ibm Printing apparatus with no-print feature
US3451520A (en) * 1967-06-21 1969-06-24 Ibm Ribbon level shift with print velocity selection

Also Published As

Publication number Publication date
DE2059245B2 (en) 1972-08-24
DE2059245A1 (en) 1971-07-22
US3618736A (en) 1971-11-09
FR2073486A2 (en) 1971-10-01
FR2073486B2 (en) 1973-02-02
JPS4947523B1 (en) 1974-12-16
BE757744R (en) 1971-04-01

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