US3141539A - Typewriter ribbon for selectively typing and obliterating - Google Patents
Typewriter ribbon for selectively typing and obliterating Download PDFInfo
- Publication number
- US3141539A US3141539A US171963A US17196362A US3141539A US 3141539 A US3141539 A US 3141539A US 171963 A US171963 A US 171963A US 17196362 A US17196362 A US 17196362A US 3141539 A US3141539 A US 3141539A
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- US
- United States
- Prior art keywords
- ribbon
- strip
- obliterating
- ink
- adhesive
- 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
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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
- B41J31/00—Ink ribbons; Renovating or testing ink ribbons
- B41J31/05—Ink ribbons having coatings other than impression-material coatings
Definitions
- the ribbons with which the invention is concerned are of the composite type which include one longitudinal portion or area which is inked or coated to transfer a visible impression to the writing paper, and another longitudinal portion or area which is capable of transferring a blank-out or camoullage material to such paper, whereby to cover up or obliterate an erroneous imprint, and leave a stuface suitable to receive a correct imprint, if desired.
- Ribbons of this composite type are described in my copending application filed April 4, 1961, Serial No. 100,661, now Patent No. 3,114,447 and it is an object of the present invention to provide ribbons of improved construction for the same general purposes.
- a further object of the present invention is to provide an improved method of making such composite ribbons.
- Another aim of the invention is to provide a cornposite-elfect typewriter ribbon in which the marking portion and the obliterating portion are secured to one another by means forming a protective backing for the ribbon; such protective backing serving multiple functions which include the protection of the ink-depositing portion from depletion or contamination, land of protecting the type faces of the typewriter against the build-up of ink or lint residues which normally require periodic removal.
- a further object of the invention is to provide a composite-eifect ltypewriter ribbon in which the useful life of the inked or marking portion is maintained, both in storage land during use, so as 'to equal or exceed the life of an otherwise comparable marking ribbon alone.
- the present invention accomplishes its aims by a ribbon construction in which separate ribbon entities (one for writing, marking or imprinting, and one for camouaging or obliterating) are secured together by a common support layer, which support layer additionally serves auxiliary functions including the prevention of adverse interaction of the marking and obliterating materials or substances, and the maintaining of the type faces in a clean condition.
- FIG. 1 isa fragmentary perspective view of one form of the improved composite-effect ribbon shown installed for use on a conventional typewriter.
- FIG. 2 is a perspective View, partly exploded and partly in section, of a portion of the ribbon shown in FIG. l.
- FIG. 3 is a view similar to FIG. 2 showing a modified form of the improved ribbon.
- FIG. 4 is a View similar to FIG. 2 of a further modification.
- the former shows a composite effect (inking and correction) ribbon 10 installed in a usual form of typewriter having the roller platen 12 and ribbon vibrator 14, for use the manner fully described in my earlier application mentioned above.
- Ribbon 10 has (at least with reference to the side facing paper 16) separate vertically-spaced marking or inking section A and obliterating or camouilaging section B. Both of these sections extend longitudinally the full length of the ribbon, and either section may be in the upper position when lthe ribbon is installed.
- FIG. 2 shows the construction of ribbon 10 in greater detail.
- the inking section 18 is constituted by an inked fabric strip having a width substantially onea ⁇ half that of the whole ribbon, while the camouaging section is constituted by a strip 20 of approximately the same width, preferably of paper carrying the camouflage transfer coating 22.
- These sections are held in edgewiseassembled configuration by being adhered to a common lengthwise strip 24 of very thin material, which may be a plastic such as My-lar, regenerated cellulose (cellophane) or the like.
- the layers .or sections 18 and 20 just described are secured to the strip 24 by an intervening adhesive indicated generally at 26.
- This adhesive may secure layer 24 and paper base layer 20 throughout their mutually confronting areas, but inking ribbon 18 is secured to strip 24 only along its opposite edges, as otherwise the ink carried thereby would be killed or contaminated by the adhesive. I therefore protect the ink ribbon section 18 from adhesion to strip 24 for a major portion of the facial width of section 18, by an intervening protective non-absorbent layer 27, which again may be of Mylan cellophane or the like.
- a convenient method of making the composite ribbon of FIG. l is to provide the common support 24 as a strip of so-called pressure-sensitive tape with the adhesive 26 coated on one side, and to laminate the camouflage strip 20 (already bearing its transfer coating 22) to that side during a continuous rewinding operation; and simultaneously feeding the inked fabric ribbon section 1S also into edge-adhered relation with the remaining 1ongitudinal portion of that side of tape 24, while feeding protective strip 27 therebetween to protect the major part of the ribbon against contact with the adhesive 26.
- FIG. 3 of the drawings An alternative construction of a composite elfect ribbon is illustrated in FIG. 3 of the drawings.
- the common mounting strip may be a length of tape 24 having adhesive layer 26 on one side, with the camouflage transfer section 20 adhered thereto.
- the inked fabric ribbon 30 is again of substantially half the vertical width of the assembly, but is provided previously with a protective layer 32 of thin Mylar or the equivalent, which is fused to ribbon 30 solely along their common lengthwise boundary edges.
- the fabric of ribbon 30 will be woven Nylon or equivalent fusible material, the edgewise adhesion being attained by a heat sealing process well known to those skilled in the art.
- FIG. 4 of the drawings illustrates a modification of the FIG. 3 construction which permits a multiplication of the ink-containing capacity of the inked ribbon; for example, to increase the ink storage writing life of a compositeeffect ribbon half of whose area is devoted to correction or camouage material.
- a full-width inked ribbon 34 has been doubled along its longitudinal centerline, and both of the edges of this folded strip have been fused along the edges only of the protective layer 36.
- a composite typewriter ribbon for selectively typing and obliterating comprising:
Description
July 21, 1964 w. H. woLowlTz TYPEWRITER RIBBON FOR SELECTIVELY TYPING AND OBLITERATING Filed Feb. 8. 1962 ATTORNEY United States Patent O 3,141,539 TYPEWRITER RHBBN FR SELECTIVELY TYPING AND OBLITERATING William Howard Wolowitz, 1742 Holly St. NW., Washington, D.C. Filed Feb. 8, 1962, Ser. No. 171,963 2 Claims. (Cl. 197-172) This invention pertains to ribbons for typewriting machines and to methods for fabricating ribbons. The ribbons with which the invention is concerned are of the composite type which include one longitudinal portion or area which is inked or coated to transfer a visible impression to the writing paper, and another longitudinal portion or area which is capable of transferring a blank-out or camoullage material to such paper, whereby to cover up or obliterate an erroneous imprint, and leave a stuface suitable to receive a correct imprint, if desired.
Ribbons of this composite type are described in my copending application filed April 4, 1961, Serial No. 100,661, now Patent No. 3,114,447 and it is an object of the present invention to provide ribbons of improved construction for the same general purposes. A further object of the present invention is to provide an improved method of making such composite ribbons.
It is a particular aim of the present invention to devise a composite effect ribbon (meaning by this term a typewriter ribbon having separate lengthwise-extending marking and obliterating regions) in which the effectiveness of the inked marking portion will in no way be diminished by the presence of the camouage or obliteration material, nor will it be diminished by the presence of the means by which the two ribbon portions are secured to one another.
Another aim of the invention is to provide a cornposite-elfect typewriter ribbon in which the marking portion and the obliterating portion are secured to one another by means forming a protective backing for the ribbon; such protective backing serving multiple functions which include the protection of the ink-depositing portion from depletion or contamination, land of protecting the type faces of the typewriter against the build-up of ink or lint residues which normally require periodic removal.
The desirability of keeping the type faces of a typewriter clean and free from deposits of lint or ink is generally recognized, and inked fabric ribbons having a buffer layer on the type-face side have been proposed, the buffer layer being for example an impervious plastic strip or deposit -to prevent actu-al contact between the type face and the inked fabric. In a composite-effect ribbon of the type with which my invention is concerned, there is a special reason for such buffering or isolating layers. While the type faces never directly strike the camouflage substance carried on the opposite face of the composite ribbon, they would ordinarily strike the inked fabric, and `any ink thus deposited on the type face might later be re-transferred to the back of the camouflage strip and thence be again transferred to the adjacent camouflage-face of the strip as the ribbon is reeled and re-reeled in the normal mode of ribbon winding in ya typewriter. Ultimately, the camouflage substance itself will be darkened or deteriorated by this ink (or lint), and the life of the composite ribbon thus shortened. A protective or buffering layer for isolating the inked ribbon portion `from the type faces thus also directly protects the integrity of the camouflage section, during normal use of a typewriter with a composite-effect ribbon.
A further object of the invention is to provide a composite-eifect ltypewriter ribbon in which the useful life of the inked or marking portion is maintained, both in storage land during use, so as 'to equal or exceed the life of an otherwise comparable marking ribbon alone.
ICC
In general, the present invention accomplishes its aims by a ribbon construction in which separate ribbon entities (one for writing, marking or imprinting, and one for camouaging or obliterating) are secured together by a common support layer, which support layer additionally serves auxiliary functions including the prevention of adverse interaction of the marking and obliterating materials or substances, and the maintaining of the type faces in a clean condition.
The invention may take a variety of specifically different construotional forms, some of which will now be described in detail in connection with the appended drawings, in which:
FIG. 1 isa fragmentary perspective view of one form of the improved composite-effect ribbon shown installed for use on a conventional typewriter.
FIG. 2 is a perspective View, partly exploded and partly in section, of a portion of the ribbon shown in FIG. l.
FIG. 3 is a view similar to FIG. 2 showing a modified form of the improved ribbon.
FIG. 4 is a View similar to FIG. 2 of a further modification.
Referring first to FIGS. 1 and 2 of the drawings, the former shows a composite effect (inking and correction) ribbon 10 installed in a usual form of typewriter having the roller platen 12 and ribbon vibrator 14, for use the manner fully described in my earlier application mentioned above. Ribbon 10 has (at least with reference to the side facing paper 16) separate vertically-spaced marking or inking section A and obliterating or camouilaging section B. Both of these sections extend longitudinally the full length of the ribbon, and either section may be in the upper position when lthe ribbon is installed.
FIG. 2 shows the construction of ribbon 10 in greater detail. As there shown, the inking section 18 is constituted by an inked fabric strip having a width substantially onea` half that of the whole ribbon, while the camouaging section is constituted by a strip 20 of approximately the same width, preferably of paper carrying the camouflage transfer coating 22. These sections are held in edgewiseassembled configuration by being adhered to a common lengthwise strip 24 of very thin material, which may be a plastic such as My-lar, regenerated cellulose (cellophane) or the like.
The layers .or sections 18 and 20 just described are secured to the strip 24 by an intervening adhesive indicated generally at 26. This adhesive may secure layer 24 and paper base layer 20 throughout their mutually confronting areas, but inking ribbon 18 is secured to strip 24 only along its opposite edges, as otherwise the ink carried thereby would be killed or contaminated by the adhesive. I therefore protect the ink ribbon section 18 from adhesion to strip 24 for a major portion of the facial width of section 18, by an intervening protective non-absorbent layer 27, which again may be of Mylan cellophane or the like.
A convenient method of making the composite ribbon of FIG. l is to provide the common support 24 as a strip of so-called pressure-sensitive tape with the adhesive 26 coated on one side, and to laminate the camouflage strip 20 (already bearing its transfer coating 22) to that side during a continuous rewinding operation; and simultaneously feeding the inked fabric ribbon section 1S also into edge-adhered relation with the remaining 1ongitudinal portion of that side of tape 24, while feeding protective strip 27 therebetween to protect the major part of the ribbon against contact with the adhesive 26.
An alternative construction of a composite elfect ribbon is illustrated in FIG. 3 of the drawings. Here again the common mounting strip may be a length of tape 24 having adhesive layer 26 on one side, with the camouflage transfer section 20 adhered thereto. The inked fabric ribbon 30 is again of substantially half the vertical width of the assembly, but is provided previously with a protective layer 32 of thin Mylar or the equivalent, which is fused to ribbon 30 solely along their common lengthwise boundary edges. In this case, the fabric of ribbon 30 will be woven Nylon or equivalent fusible material, the edgewise adhesion being attained by a heat sealing process well known to those skilled in the art.
FIG. 4 of the drawings illustrates a modification of the FIG. 3 construction which permits a multiplication of the ink-containing capacity of the inked ribbon; for example, to increase the ink storage writing life of a compositeeffect ribbon half of whose area is devoted to correction or camouage material. In this case, a full-width inked ribbon 34 has been doubled along its longitudinal centerline, and both of the edges of this folded strip have been fused along the edges only of the protective layer 36.
What is claimed is:
1. A composite typewriter ribbon for selectively typing and obliterating, comprising:
(a) an elongated support strip of thin exible plastic,
coated on one surface with a layer of adhesive,
(b) one half of the width of the coated surface of said support strip having adhered thereto by said adhesive a strip having an exposed surface layer of pressuretransferable ink-obliterating opaque camouflage material;
(c) the remaining half of the width of said support strip having adhesively secured thereto by said adhesive an ink-saturated, woven fabric marking ribbon,
A (d) said marking ribbon being secured'only along its lengthwise edges to said support strip; and (e) an ink-impervious non-absorbent protective strip positioned between the central lengthwise body of said marking ribbon and said coated surface of said support strip. 2. A composite typewriter ribbon in accordance with claim 1, in which the lateral edges of said marking ribbon are fused to the lateral edges of said protective strip.
References Cited in the le of this patent UNITED STATES PATENTS 385,391 Underwood et al July 3, 1888 1,700,415 Nedich Jan. 29, 1929 1,905,118 Nadell Apr. 25, 1933 1,925,235 Dixon Sept. 5, 1933 1,953,316 Stark Apr. 3, 1934 2,255,104 Dixon Sept. 9, 1941 l2,503,681 Newman Apr. 11, 1950 2,702,623 Pelton Feb. 22, 1955 2,728,439 Murphy et al. Dec. 27, 1955 3,010,559 Ploeger Nov. 28, 1961 FOREIGN PATENTS 25,602 Great Britain of 1913 528,589 Great Britain Nov. 1, 1940 849,868 France Aug, 28, 1939
Claims (1)
1. A COMPOSITE TYPEWRITER RIBBON FOR SELECTIVELY TYPING AND OBLITERATING, COMPRISING: (A) AN ELONGATED SUPPORT STRIP OF THIN FLEXIBLE PLASTIC, COATED ON ONE SURFACE WITH A LAYER OF ADHESIVE, (B) ONE HALF OF THE WIDTH OF THE COATED SURFACE OF SAID SUPPORT STRIP HAVING ADHERED THERETO BY SAID ADHESIVE A STRIP HAVING AN EXPOSED SURFACE LAYER OF PRESSURETRANSFERABLE INK-OBLITERATING OPAQUE CAMOUFLAGE MATERIAL; (C) THE REMAINING HALF OF THE WIDTH OF SAID SUPPORT STRIP HAVING ADHESIVELY SECURED THERETO BY SAID ADHESIVE AN INK-SATURATED, WOVEN FABRIC MARKING RIBBON, (D) SAID MARKING RIBBON BEING SECURED ONLY ALONG ITS LENGTHWISE EDGES TO SAID SUPPORT STRIP; AND (E) AN INK-IMPERVIOUS NON-ABSORBENT PROTECTIVE STRIP POSITIONED BETWEEN THE CENTRAL LENGTHWISE BODY OF SAID MARKING RIBBON AND SAID COATED SURFACE OF SAID SUPPORT STRIP.
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE628179D BE628179A (en) | 1962-02-08 | ||
US171963A US3141539A (en) | 1962-02-08 | 1962-02-08 | Typewriter ribbon for selectively typing and obliterating |
DE19631436756 DE1436756A1 (en) | 1962-02-08 | 1963-02-07 | Composite typewriter tape and method for making same |
DE19631479831 DE1479831B2 (en) | 1962-02-08 | 1963-02-07 | PROCESS FOR MANUFACTURING A TWO-COLOR RIBBON FOR PRINTING AND TYPEWRITING |
FR924033A FR1414739A (en) | 1962-02-08 | 1963-02-07 | Ribbons for typewriters and the like and method of making them |
GB504463A GB961108A (en) | 1962-02-08 | 1963-02-07 | Improvements in or relating to typewriter ribbons and methods of manufacturing the same |
CH155263A CH411948A (en) | 1962-02-08 | 1963-02-07 | Multi-part ribbon and method of making the same |
SE136763A SE306544B (en) | 1962-02-08 | 1963-02-08 | |
SE136663A SE306334B (en) | 1962-02-08 | 1963-02-08 | |
GB4266663A GB1029787A (en) | 1962-02-08 | 1963-10-29 | Improvements in or relating to typewriter ribbons |
DE1963W0035551 DE1261134B (en) | 1962-02-08 | 1963-10-31 | Multi-part ribbon with correction layer |
FR952958A FR86902E (en) | 1962-02-08 | 1963-11-07 | Ribbons for typewriters and the like and method of making them |
BE640593D BE640593A (en) | 1962-02-08 | 1963-11-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US171963A US3141539A (en) | 1962-02-08 | 1962-02-08 | Typewriter ribbon for selectively typing and obliterating |
Publications (1)
Publication Number | Publication Date |
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US3141539A true US3141539A (en) | 1964-07-21 |
Family
ID=22625814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US171963A Expired - Lifetime US3141539A (en) | 1962-02-08 | 1962-02-08 | Typewriter ribbon for selectively typing and obliterating |
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US (1) | US3141539A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3273686A (en) * | 1964-08-10 | 1966-09-20 | Impression ribbon and method op making same | |
US3664869A (en) * | 1968-01-24 | 1972-05-23 | Sergio Sala | Typewriter ribbons having correction coating and method of making |
US3719262A (en) * | 1970-08-10 | 1973-03-06 | J Taplin | Method of and machine for storing data |
US3752291A (en) * | 1971-10-12 | 1973-08-14 | V Barouh | Typewriter correction ribbon and process of manufacture |
US3872961A (en) * | 1972-09-22 | 1975-03-25 | Int Business Supplies | Means and methods for cleaning type faces of impact printing machines |
US3896920A (en) * | 1971-10-12 | 1975-07-29 | Victor Barouh | Typewriter ribbon for typing and correcting |
US4113392A (en) * | 1974-07-03 | 1978-09-12 | Filmon Process Corp. | Printing ribbon |
US4317637A (en) * | 1978-12-18 | 1982-03-02 | Shubun Sakurai | Typewriter ribbon including a correction strip |
US4482262A (en) * | 1981-04-16 | 1984-11-13 | Eugene Di Luco | Transfer/correcting ribbon |
US4492485A (en) * | 1980-09-02 | 1985-01-08 | Sears, Roebuck And Co. | Error correcting typewriter for simplified word obliteration |
US4609585A (en) * | 1985-01-31 | 1986-09-02 | Takeyosi Seijo | Correction tape for copies |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US385391A (en) * | 1888-07-03 | Trix of said w | ||
GB191325602A (en) * | 1912-11-08 | 1914-03-26 | Hans Fiack | Device for Eliminating by Means of the Typewriter Wrong Parts from a Type Written Writing. |
US1700415A (en) * | 1927-05-16 | 1929-01-29 | Samuel A Neidich | Transfer web |
US1905118A (en) * | 1927-01-08 | 1933-04-25 | Nadell Aaron | Method and means of eradicating typewritten matter |
US1915235A (en) * | 1927-04-07 | 1933-06-20 | Magee Carpet Co | Binding for the unselvaged edges of fabrics |
US1953316A (en) * | 1931-10-14 | 1934-04-03 | Mittag & Volger Inc | Transfer element |
FR849868A (en) * | 1939-02-04 | 1939-12-04 | Method and device for making signs printed by typewriters, calculators or the like invisible | |
GB528589A (en) * | 1939-05-09 | 1940-11-01 | Demetri Saba Papa Kyriacou | Improvements in or relating to typewriters and typewriter ribbons |
US2255104A (en) * | 1940-08-21 | 1941-09-09 | Columbia Ribbon & Carbon | Typewriter ribbon |
US2503681A (en) * | 1946-03-26 | 1950-04-11 | Columbia Ribbon & Carbon | Transfer ribbon manufacture |
US2702623A (en) * | 1952-04-25 | 1955-02-22 | Ida S Pelton | Typist's apparatus and writing ribbon enabling typists to have writing that matches for months |
US2728439A (en) * | 1954-08-26 | 1955-12-27 | Buckeye Ribbon & Carbon Compan | Typewriter ribbon |
US3010559A (en) * | 1959-05-14 | 1961-11-28 | Edgecraft Company | Printing ribbon |
-
1962
- 1962-02-08 US US171963A patent/US3141539A/en not_active Expired - Lifetime
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US385391A (en) * | 1888-07-03 | Trix of said w | ||
GB191325602A (en) * | 1912-11-08 | 1914-03-26 | Hans Fiack | Device for Eliminating by Means of the Typewriter Wrong Parts from a Type Written Writing. |
US1905118A (en) * | 1927-01-08 | 1933-04-25 | Nadell Aaron | Method and means of eradicating typewritten matter |
US1915235A (en) * | 1927-04-07 | 1933-06-20 | Magee Carpet Co | Binding for the unselvaged edges of fabrics |
US1700415A (en) * | 1927-05-16 | 1929-01-29 | Samuel A Neidich | Transfer web |
US1953316A (en) * | 1931-10-14 | 1934-04-03 | Mittag & Volger Inc | Transfer element |
FR849868A (en) * | 1939-02-04 | 1939-12-04 | Method and device for making signs printed by typewriters, calculators or the like invisible | |
GB528589A (en) * | 1939-05-09 | 1940-11-01 | Demetri Saba Papa Kyriacou | Improvements in or relating to typewriters and typewriter ribbons |
US2255104A (en) * | 1940-08-21 | 1941-09-09 | Columbia Ribbon & Carbon | Typewriter ribbon |
US2503681A (en) * | 1946-03-26 | 1950-04-11 | Columbia Ribbon & Carbon | Transfer ribbon manufacture |
US2702623A (en) * | 1952-04-25 | 1955-02-22 | Ida S Pelton | Typist's apparatus and writing ribbon enabling typists to have writing that matches for months |
US2728439A (en) * | 1954-08-26 | 1955-12-27 | Buckeye Ribbon & Carbon Compan | Typewriter ribbon |
US3010559A (en) * | 1959-05-14 | 1961-11-28 | Edgecraft Company | Printing ribbon |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3273686A (en) * | 1964-08-10 | 1966-09-20 | Impression ribbon and method op making same | |
US3664869A (en) * | 1968-01-24 | 1972-05-23 | Sergio Sala | Typewriter ribbons having correction coating and method of making |
US3719262A (en) * | 1970-08-10 | 1973-03-06 | J Taplin | Method of and machine for storing data |
US3752291A (en) * | 1971-10-12 | 1973-08-14 | V Barouh | Typewriter correction ribbon and process of manufacture |
US3896920A (en) * | 1971-10-12 | 1975-07-29 | Victor Barouh | Typewriter ribbon for typing and correcting |
US3872961A (en) * | 1972-09-22 | 1975-03-25 | Int Business Supplies | Means and methods for cleaning type faces of impact printing machines |
US4113392A (en) * | 1974-07-03 | 1978-09-12 | Filmon Process Corp. | Printing ribbon |
US4317637A (en) * | 1978-12-18 | 1982-03-02 | Shubun Sakurai | Typewriter ribbon including a correction strip |
US4492485A (en) * | 1980-09-02 | 1985-01-08 | Sears, Roebuck And Co. | Error correcting typewriter for simplified word obliteration |
US4482262A (en) * | 1981-04-16 | 1984-11-13 | Eugene Di Luco | Transfer/correcting ribbon |
US4609585A (en) * | 1985-01-31 | 1986-09-02 | Takeyosi Seijo | Correction tape for copies |
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