CA1337183C - Multicolored fabric printing ribbon - Google Patents
Multicolored fabric printing ribbonInfo
- Publication number
- CA1337183C CA1337183C CA 602208 CA602208A CA1337183C CA 1337183 C CA1337183 C CA 1337183C CA 602208 CA602208 CA 602208 CA 602208 A CA602208 A CA 602208A CA 1337183 C CA1337183 C CA 1337183C
- Authority
- CA
- Canada
- Prior art keywords
- ribbon
- flushed
- fabric
- plgments
- rlbbon
- 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 - Fee Related
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
- B41J31/00—Ink ribbons; Renovating or testing ink ribbons
- B41J31/02—Ink ribbons characterised by the material from which they are woven
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Impression-Transfer Materials And Handling Thereof (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
A fabric ribbon having multicolored regions has coloring matter in the regions of only flushed pigments in a liquid vehicle. Flushed pigments do not migrate between colored regions under normal conditions, and therefore mixing of the colors is avoided without alternation of the fabric or use of a fabric with special characteristics or regions. Flushed pigments have very small particle size and perform like dyes with respect to replenishing the ribbon for good ribbon life. Yet, the ribbon colors do not bleed together, a characteristic of pigments.
Description
-DescrlPtlon Multlcolored Fabrlc Prlntlnq Rlbbon Technlcal Fleld Thls lnventlon relates to fabrlc rlbbons whlch are lmpacted by a prlnt element to prlnt more than one color. The prlnt elements typlcally are fully formed character lmages on a dalsy wheel or one or more columns of lndlvldual wlres.
Transferable colors are held ln the fabrlc and expressed on to paper or other prlnt-recelvlng medlum by the pressure of printlng. The colors are commonly located on the rlbbon ln strlps whlch extend along the length of the rlbbon or ln blocks of one color alternatlng wlth blocks of another color along the length of the rlbbon. Such rlbbons become vlrtually useless lf the colors blend together durlng storage or use.
Backqround Art Prlor to thls lnventlon, multlcolored fabrlc rlbbons were typlcally made uslng standard plgments as the colorlng matter or dyes as part of the colorlng matter wlth the dlfferent colors separated by some physlcal barrler or gap.
The average partlcle slze of standard plgments ls nomlnally 4 to 5 mlcrons, whlle dyes are molecular ln slze.
Inks wlth only standard plgments do not blend together ln ordlnary storage and use. Thls can be attrlbuted ~ ..
to the fact that the plgment particles are relatlvely large ln comparlson wlth dye molecules, and amblent energy (whlch lncludes thermal, osmotlc, caplllary, Brownlan, and other forces) ls lnsufflclent to move such plgment partlcles slgnlflcantly. Dlfferent colored llquld lnks wlth standard plgments only have been applled slde-by-slde on fabrlc rlbbons wlthout blendlng, but such rlbbons do not replenlsh used areas well.
In contrast, dye molecules dlssolved ln a typlcal lnk vehlcle are so small as to be carrled by the lnk vehlcle and to move when the lnk vehlcle 18 moved under the stresses of normal amblent heat, as well as other amblent forces. To control thls movement, the rlbbon has been deslgned ln a way to block color movement. Commonly, the weave or contlnulty of the rlbbon ls physlcally lnterrupted at the boundary between colors, such as by addlng an adheslve whlch ls hardened or by crushlng or meltlng the rlbbon.
Thls lnventlon completely avolds any change of the weave of the rlbbon. In accordance wlth the lnstant lnventlon, a partlcular colorlng matter, speclflcally flushed plgments, are used (average nomlnally 1/2 to 1 mlcron, agglomeratlons up to 2 mlcrons). These are plgments of very small partlcle slze, but do not tend to mlx even though the woven fabrlc of the rlbbon ls contlnuous at the boundary between lnks of dlfferent colors. The very small partlcle slze has been found to provlde good rlbbon llfe, the partlcles exhlbltlng sufflclent llmlted moblllty that colors reconstltute themselves sufflclently near locatlons from whlch .
lmpact prlntlng has occurred.
U.S. Patent No. 385,391 to Underwood et al has an embodlment shown ln lts Flg. 2 ln whlch no dlfference ln the rlbbon at the boundary between colors ls speclfled. The other embodlments of thls patent show embodlments ln whlch barrlers to mlxlng of colors are created by the manner the rlbbon ls woven or formed. Slnce the nature of the colorlng matter ln the Flg. 2 embodlment ls only generally descrlbed, the use of flushed plgments ls not suggested. U.S. Patent No. 2,590,200 to Neldlch teaches a rlbbon ln whlch the flber of the rlbbon ls predomlnantly ln the dlrectlon of the boundarles of the dlfferent colors to prevent mlxlng across the colors.
Although flushed plgments are not wldely used, flushed plgments are known and generally avallable, and flushed plgments have been used ln woven rlbbons. No use of flushed plgments ln multlcolored rlbbons ls known.
U.S. Patent No. 4,574,623 to Neumann ls clted merely as lllustratlve that flushed plgments are known.
U.K. Patent No. 885,813, Tltled "Improvements ln or relatlng to Ink Rlbbons," publlshed Dec. 26, 1961, teaches a multlcolored rlbbon ln whlch the weave of the rlbbon ls not modlfled to prevent mlxlng. Instead, the llquld vehlcles of the lnks are selected to be lmmlsclble. In accordance wlth the lnstant lnventlon the vehlcles are not essentlal to preventlng mlxlng and the vehlcles for each color may be ldentlcal.
Dlsclosure of Inventlon Thls lnstant lnventlon ls a fabrlc rlbbon havlng multlcolored reglons of colorlng matter ln a llquld vehlcle.
The colorlng matter of the reglons ls essentlally only flushed plgments, whlch are plgments of partlcle slze generally less than 2 mlcrons and of average partlcle slze of nomlnally 1/2 to 1 mlcron. (By contrast, standard plgments are nomlnally 4 to 5 mlcrons ln partlcle slze.) Flushed plgments do not mlgrate between colored reglons under normal condltlons, and therefore mlxlng of the colors ls avolded wlthout alteratlon of the fabrlc or use of a fabrlc wlth speclal characterlstlcs or reglons.
The vehlcles of the dlfferent colored reglons are not slgnlflcant ln preventlng mlgratlon, as the flushed plgments do not mlgrate wlth the vehlcles. Nevertheless, the flushed plgments have sufflclent moblllty ln reglons from whlch lnk has been depleted by prlntlng to reflll used areas of the rlbbon wlth plgment, thus provldlng a rlbbon of long useful llfe.
Colored strlps havlng essentlally only standard plgments do not tend to mlx, but the rlbbon llfe from rlbbons havlng only such standard plgments ls unsatlsfactory because they do not replenlsh used areas well. Flushed plgments, belng of very small partlcle slze, do provlde satlsfactory llfe. Yet, no barrler ls needed to prevent mlxlng between color reglons. Thls lnventlon also has the potentlal of preventlng face-to-face mlxlng of the rlbbon colors when the ~r rlbbon ls ln a stuffed chamber, whlch is a common cartrldge deslgn.
Best Mode for Carrylnq Out the Inventlon Three subtractlve colors of the preferred embodlment of thls lnventlon are as follows:
Subtractlve Yellow Component Percent by Welght Flushed SIC0 Yellow M0 49.7%
12 M0-1434 (Trademarked product of BASF Corporatlon) Butoxy ethyl oleate (vehlcle) 44.7%
Castor oll (vehlcle, lncreases 5.6%
vlscoslty) The 12-M0-1434 ls descrlbed by lts suppller as 25%
flushed yellow plgment and treated mlneral oll as a vehlcle.
The approxlmate proportlon of plgment to vehlcle ln the yellow lnk therefore ls 12.5% by welght plgment to 87.5% by welght vehlcle.
, Subtractlve Red Component Percent by Welght Flushed LITHOL Rublne 53.7%
45-MO-1998 (Trademarked product of BASF Corporatlon) Butoxy ethyl oleate tvehlcle) 40.3%
Castor oll (vehlcle, lncreases 6.0%
vlscoslty) The 45-MO-1998 ls descrlbed by lts suppller as 35%
flushed red plgment and treated mlneral oll as a vehlcle. The approxlmate proportlon of plgment to vehlcle ln the red lnk ls therefore 19% by welght plgment to 81% by welght vehlcle.
~ 74460-14 Subtractlve Blue Component Percent by Welght Flushed HELIOGEN Blue, MO 37%
70-MO-2324 (Trademarked product of BASF Corporatlon) Butoxy ethyl oleate (vehlcle) 56%
Castor oll (vehlcle, lncreases 7%
vlscoslty) The 70-MO-2324 ls descrlbed by lts suppller as 37%
flushed blue plgment, 58% vehlcle sollds, and treated mlneral oll vehlcle. The approxlmate proportlon of plgment to vehlcle ln the blue lnk ls therefore 14% by welght plgment to 86% by welght vehlcle and vehlcle sollds.
Each of the formulas ls homogenlzed ln a hlgh speed mlxer. The formulas are applled ln any conventlonal manner, such as by a reverse roll coater, to ad~olnlng reglons of fabrlc. The fabrlc may be a conventlonal nylon woven fabrlc commonly used for lmpact prlnter rlbbons. More speciflcally, ln thls preferred embodlment the fabrlc ls hlghest quallty fllament nylon type 6,6; pH of 4.5 - 7, 4.0 mll (approxlmately 0.01016 cm) dlameter; welght of 1.6 ounce per square yard (approxlmately 54.3 grams per square meter); warp (long dlrectlon) 174.0 threads per lnch (approxlmately 68.5 threads ~r 1 337l.a3 per cm) and flll (cross dlrectlon) 114 threads per lnch (approxlmately 45.7 threads per cmJ.
The detalls of the fabrlc are not consldered llmltlng, and fabrlcs of other materlals, such as cotton and other man-made polymers, are consldered alternatives for use wlth thls lnventlon. The threads of the fabrlc may be woven, felted, or otherwlse lntermlxed. However, lf the lnterstlces are exceptlonally large, whlch would result from a very loose feltlng, for example, the boundarles between the colors would be uneven.
The fabrlc ls entlrely contlnuous and no change ls made at the boundarles between the lnk reglons. The lnk reglons may be along the length of the rlbbon, resultlng ln yellow, red, and blue strlps slde by slde, each extendlng along the full length of a rlbbon whlch typlcally ls stuffed ln the chamber of a rlbbon cartrldge or wound ln a spool.
Mlxlng or blendlng of the rlbbon colors ls not experlenced ln normal use. The flushed plgments perform llke dyes wlth respect to rlbbon llfe, provldlng a rlbbon whlch may be reused extenslvely, a characterlstlc of rlbbons havlng dyes as the colorlng matter. Yet, the rlbbon colors do not bleed together, a characterlstlc of plgments.
Flushed plgments are understood to be made ln a manner ln whlch the plgments are never a dry solld. The resultlng plgments are of much smaller partlcle slze as compared to standard plgments. Agglomeratlons ln flushed plgments may be as large as 2 mlcrons, whlle the average partlcle slze ls nomlnally 1/2 to 1 mlcron. By comparlson, -~, the average partlcle slze of standard plgments ls nomlnally 4 to 5 mlcrons.
Alternatlve embodlments wlll be readlly apparent from the foregolng dlscusslon.
. 74460-14 :
Transferable colors are held ln the fabrlc and expressed on to paper or other prlnt-recelvlng medlum by the pressure of printlng. The colors are commonly located on the rlbbon ln strlps whlch extend along the length of the rlbbon or ln blocks of one color alternatlng wlth blocks of another color along the length of the rlbbon. Such rlbbons become vlrtually useless lf the colors blend together durlng storage or use.
Backqround Art Prlor to thls lnventlon, multlcolored fabrlc rlbbons were typlcally made uslng standard plgments as the colorlng matter or dyes as part of the colorlng matter wlth the dlfferent colors separated by some physlcal barrler or gap.
The average partlcle slze of standard plgments ls nomlnally 4 to 5 mlcrons, whlle dyes are molecular ln slze.
Inks wlth only standard plgments do not blend together ln ordlnary storage and use. Thls can be attrlbuted ~ ..
to the fact that the plgment particles are relatlvely large ln comparlson wlth dye molecules, and amblent energy (whlch lncludes thermal, osmotlc, caplllary, Brownlan, and other forces) ls lnsufflclent to move such plgment partlcles slgnlflcantly. Dlfferent colored llquld lnks wlth standard plgments only have been applled slde-by-slde on fabrlc rlbbons wlthout blendlng, but such rlbbons do not replenlsh used areas well.
In contrast, dye molecules dlssolved ln a typlcal lnk vehlcle are so small as to be carrled by the lnk vehlcle and to move when the lnk vehlcle 18 moved under the stresses of normal amblent heat, as well as other amblent forces. To control thls movement, the rlbbon has been deslgned ln a way to block color movement. Commonly, the weave or contlnulty of the rlbbon ls physlcally lnterrupted at the boundary between colors, such as by addlng an adheslve whlch ls hardened or by crushlng or meltlng the rlbbon.
Thls lnventlon completely avolds any change of the weave of the rlbbon. In accordance wlth the lnstant lnventlon, a partlcular colorlng matter, speclflcally flushed plgments, are used (average nomlnally 1/2 to 1 mlcron, agglomeratlons up to 2 mlcrons). These are plgments of very small partlcle slze, but do not tend to mlx even though the woven fabrlc of the rlbbon ls contlnuous at the boundary between lnks of dlfferent colors. The very small partlcle slze has been found to provlde good rlbbon llfe, the partlcles exhlbltlng sufflclent llmlted moblllty that colors reconstltute themselves sufflclently near locatlons from whlch .
lmpact prlntlng has occurred.
U.S. Patent No. 385,391 to Underwood et al has an embodlment shown ln lts Flg. 2 ln whlch no dlfference ln the rlbbon at the boundary between colors ls speclfled. The other embodlments of thls patent show embodlments ln whlch barrlers to mlxlng of colors are created by the manner the rlbbon ls woven or formed. Slnce the nature of the colorlng matter ln the Flg. 2 embodlment ls only generally descrlbed, the use of flushed plgments ls not suggested. U.S. Patent No. 2,590,200 to Neldlch teaches a rlbbon ln whlch the flber of the rlbbon ls predomlnantly ln the dlrectlon of the boundarles of the dlfferent colors to prevent mlxlng across the colors.
Although flushed plgments are not wldely used, flushed plgments are known and generally avallable, and flushed plgments have been used ln woven rlbbons. No use of flushed plgments ln multlcolored rlbbons ls known.
U.S. Patent No. 4,574,623 to Neumann ls clted merely as lllustratlve that flushed plgments are known.
U.K. Patent No. 885,813, Tltled "Improvements ln or relatlng to Ink Rlbbons," publlshed Dec. 26, 1961, teaches a multlcolored rlbbon ln whlch the weave of the rlbbon ls not modlfled to prevent mlxlng. Instead, the llquld vehlcles of the lnks are selected to be lmmlsclble. In accordance wlth the lnstant lnventlon the vehlcles are not essentlal to preventlng mlxlng and the vehlcles for each color may be ldentlcal.
Dlsclosure of Inventlon Thls lnstant lnventlon ls a fabrlc rlbbon havlng multlcolored reglons of colorlng matter ln a llquld vehlcle.
The colorlng matter of the reglons ls essentlally only flushed plgments, whlch are plgments of partlcle slze generally less than 2 mlcrons and of average partlcle slze of nomlnally 1/2 to 1 mlcron. (By contrast, standard plgments are nomlnally 4 to 5 mlcrons ln partlcle slze.) Flushed plgments do not mlgrate between colored reglons under normal condltlons, and therefore mlxlng of the colors ls avolded wlthout alteratlon of the fabrlc or use of a fabrlc wlth speclal characterlstlcs or reglons.
The vehlcles of the dlfferent colored reglons are not slgnlflcant ln preventlng mlgratlon, as the flushed plgments do not mlgrate wlth the vehlcles. Nevertheless, the flushed plgments have sufflclent moblllty ln reglons from whlch lnk has been depleted by prlntlng to reflll used areas of the rlbbon wlth plgment, thus provldlng a rlbbon of long useful llfe.
Colored strlps havlng essentlally only standard plgments do not tend to mlx, but the rlbbon llfe from rlbbons havlng only such standard plgments ls unsatlsfactory because they do not replenlsh used areas well. Flushed plgments, belng of very small partlcle slze, do provlde satlsfactory llfe. Yet, no barrler ls needed to prevent mlxlng between color reglons. Thls lnventlon also has the potentlal of preventlng face-to-face mlxlng of the rlbbon colors when the ~r rlbbon ls ln a stuffed chamber, whlch is a common cartrldge deslgn.
Best Mode for Carrylnq Out the Inventlon Three subtractlve colors of the preferred embodlment of thls lnventlon are as follows:
Subtractlve Yellow Component Percent by Welght Flushed SIC0 Yellow M0 49.7%
12 M0-1434 (Trademarked product of BASF Corporatlon) Butoxy ethyl oleate (vehlcle) 44.7%
Castor oll (vehlcle, lncreases 5.6%
vlscoslty) The 12-M0-1434 ls descrlbed by lts suppller as 25%
flushed yellow plgment and treated mlneral oll as a vehlcle.
The approxlmate proportlon of plgment to vehlcle ln the yellow lnk therefore ls 12.5% by welght plgment to 87.5% by welght vehlcle.
, Subtractlve Red Component Percent by Welght Flushed LITHOL Rublne 53.7%
45-MO-1998 (Trademarked product of BASF Corporatlon) Butoxy ethyl oleate tvehlcle) 40.3%
Castor oll (vehlcle, lncreases 6.0%
vlscoslty) The 45-MO-1998 ls descrlbed by lts suppller as 35%
flushed red plgment and treated mlneral oll as a vehlcle. The approxlmate proportlon of plgment to vehlcle ln the red lnk ls therefore 19% by welght plgment to 81% by welght vehlcle.
~ 74460-14 Subtractlve Blue Component Percent by Welght Flushed HELIOGEN Blue, MO 37%
70-MO-2324 (Trademarked product of BASF Corporatlon) Butoxy ethyl oleate (vehlcle) 56%
Castor oll (vehlcle, lncreases 7%
vlscoslty) The 70-MO-2324 ls descrlbed by lts suppller as 37%
flushed blue plgment, 58% vehlcle sollds, and treated mlneral oll vehlcle. The approxlmate proportlon of plgment to vehlcle ln the blue lnk ls therefore 14% by welght plgment to 86% by welght vehlcle and vehlcle sollds.
Each of the formulas ls homogenlzed ln a hlgh speed mlxer. The formulas are applled ln any conventlonal manner, such as by a reverse roll coater, to ad~olnlng reglons of fabrlc. The fabrlc may be a conventlonal nylon woven fabrlc commonly used for lmpact prlnter rlbbons. More speciflcally, ln thls preferred embodlment the fabrlc ls hlghest quallty fllament nylon type 6,6; pH of 4.5 - 7, 4.0 mll (approxlmately 0.01016 cm) dlameter; welght of 1.6 ounce per square yard (approxlmately 54.3 grams per square meter); warp (long dlrectlon) 174.0 threads per lnch (approxlmately 68.5 threads ~r 1 337l.a3 per cm) and flll (cross dlrectlon) 114 threads per lnch (approxlmately 45.7 threads per cmJ.
The detalls of the fabrlc are not consldered llmltlng, and fabrlcs of other materlals, such as cotton and other man-made polymers, are consldered alternatives for use wlth thls lnventlon. The threads of the fabrlc may be woven, felted, or otherwlse lntermlxed. However, lf the lnterstlces are exceptlonally large, whlch would result from a very loose feltlng, for example, the boundarles between the colors would be uneven.
The fabrlc ls entlrely contlnuous and no change ls made at the boundarles between the lnk reglons. The lnk reglons may be along the length of the rlbbon, resultlng ln yellow, red, and blue strlps slde by slde, each extendlng along the full length of a rlbbon whlch typlcally ls stuffed ln the chamber of a rlbbon cartrldge or wound ln a spool.
Mlxlng or blendlng of the rlbbon colors ls not experlenced ln normal use. The flushed plgments perform llke dyes wlth respect to rlbbon llfe, provldlng a rlbbon whlch may be reused extenslvely, a characterlstlc of rlbbons havlng dyes as the colorlng matter. Yet, the rlbbon colors do not bleed together, a characterlstlc of plgments.
Flushed plgments are understood to be made ln a manner ln whlch the plgments are never a dry solld. The resultlng plgments are of much smaller partlcle slze as compared to standard plgments. Agglomeratlons ln flushed plgments may be as large as 2 mlcrons, whlle the average partlcle slze ls nomlnally 1/2 to 1 mlcron. By comparlson, -~, the average partlcle slze of standard plgments ls nomlnally 4 to 5 mlcrons.
Alternatlve embodlments wlll be readlly apparent from the foregolng dlscusslon.
. 74460-14 :
Claims (6)
1. A fabric ribbon comprising adjoining areas having flowable inks of different colors in said adjoining area, said fabric being continuous between said areas and the coloring matter of each said flowable ink comprising a flushed pigment.
2. The ribbon as in claim 1 in which said fabric is woven with a continuous weave between said adjoining ares.
3. The ribbon as in claim 1 or claim 2 in which each of said inks further comprises a liquid vehicle.
4. A fabric ribbon comprising adjoining areas having flowable inks of different colors in said adjoining areas, said fabric being continuous between said areas and the coloring matter of each said flowable ink comprising flushed pigment having average particle size in the order of magnitude of 1/2 to 1 micron.
5. The ribbon as in claim 4 in which said fabric is woven with a continuous weave between said adjoining areas.
6. The ribbon as in claim 5 in which said ink of each of said different colors has coloring matter comprising flushed pigment having substantially no particle size greater than 2 microns.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22919488A | 1988-08-08 | 1988-08-08 | |
| US229,194 | 1988-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1337183C true CA1337183C (en) | 1995-10-03 |
Family
ID=22860187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 602208 Expired - Fee Related CA1337183C (en) | 1988-08-08 | 1989-06-08 | Multicolored fabric printing ribbon |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0354863B1 (en) |
| JP (1) | JPH0737166B2 (en) |
| CA (1) | CA1337183C (en) |
| DE (1) | DE68914546T2 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB885813A (en) * | 1958-01-21 | 1961-12-28 | Caribonum Ltd | Improvements in or relating to inked ribbons |
| US3817773A (en) * | 1970-02-25 | 1974-06-18 | Ncr Co | Woven fabric printing ribbon having rupturable microcapsules bonded to its surface |
| US4309320A (en) * | 1979-01-03 | 1982-01-05 | Basf Wyandotte Corporation | Pigment flushing |
| DE3118980A1 (en) * | 1981-05-09 | 1982-11-25 | Pelikan Ag, 3000 Hannover | MULTICARBON MATERIAL FOR WRITING |
| DE3321998A1 (en) * | 1983-06-18 | 1984-12-20 | Hoechst Ag, 6230 Frankfurt | PIGMENT PREPARATION, METHOD FOR THEIR PRODUCTION AND THEIR USE |
| JPH07396B2 (en) * | 1985-04-25 | 1995-01-11 | 沖電気工業株式会社 | ink ribbon |
-
1989
- 1989-05-29 JP JP13292189A patent/JPH0737166B2/en not_active Expired - Lifetime
- 1989-06-08 CA CA 602208 patent/CA1337183C/en not_active Expired - Fee Related
- 1989-06-29 EP EP19890480106 patent/EP0354863B1/en not_active Expired - Lifetime
- 1989-06-29 DE DE1989614546 patent/DE68914546T2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0354863A2 (en) | 1990-02-14 |
| JPH0737166B2 (en) | 1995-04-26 |
| JPH02147374A (en) | 1990-06-06 |
| DE68914546D1 (en) | 1994-05-19 |
| EP0354863A3 (en) | 1991-03-13 |
| DE68914546T2 (en) | 1994-10-13 |
| EP0354863B1 (en) | 1994-04-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |