GB1300242A - Improvements in and relating to web transporting arrangements - Google Patents

Improvements in and relating to web transporting arrangements

Info

Publication number
GB1300242A
GB1300242A GB5303/70A GB530370A GB1300242A GB 1300242 A GB1300242 A GB 1300242A GB 5303/70 A GB5303/70 A GB 5303/70A GB 530370 A GB530370 A GB 530370A GB 1300242 A GB1300242 A GB 1300242A
Authority
GB
United Kingdom
Prior art keywords
ribbon
ratchet wheels
pawl
feb
engage
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
GB5303/70A
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of GB1300242A publication Critical patent/GB1300242A/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
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/40—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction
    • B41J33/44—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically
    • B41J33/51—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by the use of particular reversing control means
    • B41J33/518—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by the use of particular reversing control means the reversing-feeler engaging buttons or the like secured to the ribbon near its ends
    • 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
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/40—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction
    • B41J33/44—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically
    • B41J33/46—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by its application to mechanism in which two spools are driven by pawl-and-rachet mechanism
    • B41J33/48—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by its application to mechanism in which two spools are driven by pawl-and-rachet mechanism comprising two pawls and ratchets, one for each spool

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

1300242 Ink ribbon mechanism RICOH KK 4 Feb 1970 [20 Feb 1969] 5303/70 Heading B6F An ink ribbon 36 is fed between spools driven by ratchet wheels 4, 5 engaged by drive pawls 10a, 11a pivoted to a member 9 which is oscillated on operation of print mechanism (not shown), the feed mechanism including ribbon feed reversal mechanism actuated in response to engagement of a stop such as 37a with pins such as 34a, 35a on a sliding bar 30, the bar being connected to a bell crank lever 26 which acts through a bowed spring 29 on a pin 18 mounted on a pivotable member 23, the pin acting to disengage one pawl 10a or 11a from its respective ratchet wheel and to engage the other pawl with its ratchet wheel by pivoting L-shaped levers 16, 20 with the aid of springs 17, (21, Fig. 1), the levers 16, 20 having respective ends 16a, 20a which act as detent pawls for their respective ratchet wheels. Leaf springs (38a, 38b) engage the ratchet wheels 4, 5 respectively and act as brakes to prevent slackening of the ribbon.
GB5303/70A 1969-02-20 1970-02-04 Improvements in and relating to web transporting arrangements Expired GB1300242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44013084A JPS4935885B1 (en) 1969-02-20 1969-02-20

Publications (1)

Publication Number Publication Date
GB1300242A true GB1300242A (en) 1972-12-20

Family

ID=11823288

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5303/70A Expired GB1300242A (en) 1969-02-20 1970-02-04 Improvements in and relating to web transporting arrangements

Country Status (4)

Country Link
US (1) US3658164A (en)
JP (1) JPS4935885B1 (en)
DE (1) DE2007432B2 (en)
GB (1) GB1300242A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5121768Y2 (en) * 1971-07-19 1976-06-05
JPS5188304U (en) * 1975-01-09 1976-07-15
FR2419172A1 (en) * 1978-03-10 1979-10-05 Oki Electric Ind Co Ltd Ink ribbon feed mechanism - has lever preventing rearwards movement of ratchet wheels of spools
AT371498B (en) * 1978-08-24 1983-06-27 Wilz Pauls Rosemarie CLEARING AGENT FOR BEER AND METHOD FOR THE PRODUCTION THEREOF

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1544891A (en) * 1922-07-29 1925-07-07 Stromberg Electric Company Ribbon-feed mechanism
US1928561A (en) * 1928-10-04 1933-09-26 Grandjean Marc Automatic ribbon reversing mechanism for typewriters
US2902136A (en) * 1957-12-20 1959-09-01 Ibm Ribbon mechanism
US3340989A (en) * 1964-08-11 1967-09-12 Sperry Rand Corp Ribbon reverse mechanism
BE703962A (en) * 1966-09-20 1968-02-01
US3542183A (en) * 1967-11-06 1970-11-24 Singer Co Print ribbon feed structure

Also Published As

Publication number Publication date
JPS4935885B1 (en) 1974-09-26
US3658164A (en) 1972-04-25
DE2007432A1 (en) 1970-09-17
DE2007432B2 (en) 1973-05-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees