AU730724B2 - Ink eradicator system - Google Patents

Description

1~ 1.ij~ UUI 11.1 11-U btiucu P uUaU!N D1 'j'1qJ A~u, U L oI Ink Eradicator System Background of the Invention h'ils invention relates to ink eradicat-or systenis.

hik eradicator systems generally Include two comiponcints. ()ne component is anl aquieouN Ink that includes a dye typical ly at tiry!l methdane that Canl be converted to a colorless Form when contacted with al SuLIac1 Uch "Is aU fti (Ite ICLticiiig aget 0or a basic nit1rogenl compound. The second comipon~ent is an aqUeOLuS eradilcator 1f1.id ihat includes a Su~bStfn'Ce that' can cause the dye to convert to a colorli.:ss f'orm, A uiser writes with the ink I~d 1 correction is neccessary. applics (he eradicator Ii11iid to the Ink inarlkirg to Io) decolorize thle dye.

It is desirable to he able to write-ov;er the area to which an eradicator fluid is ap 1 )licd. One problem that may occur when write-ov-er ol an eradicated mrark is attempted is, that th~e new nmark may fade over time as thec: Iein theL i nl comles into contact with the CNsCeSs eracdicating substance SulfIIte Or a I)In the hardenied eradicator fluid.

Si A\ccording to a first aspect. the pres1n1 iVentionl ColnSi~ sn an ikand eradicator I lui L coimbination, COMPrising *an eradicator f'luid containing 'ibasic ni1trogyen C01Iompond and water, and an ink containing a dye that deccolorizes i1 f ont1.iAtCd with said basic nitrogen C0ompoun111d. a binding agent comprising ti magne011s.um1 Mr XincG Salt or mnixture thereof capable of binding said basic. nitrogen componmd, and water.

Ty pically the eradicator fluid and/or [lhe ink furtlier ineCLudes a film-forming *polymer. Tlypically the filmn-foiling polymerW inludedICI I in c radicator f-luid comprises a polyacr ylic acid salt, and/or the film--forming polyrner included insaid ink comprises a *polyacrylate. Typically the eradicator fluid contains betwveen 9'%1 and 10% of said basic n~itrogen compound by weight, betweeni and 25%/ oF' said imi-forming" polymner by L eiht, and bet~ween 60%X and 70% water by weight; and/or said ink contains between 3% ad 4%V ol' said dye by we~ight, between 8% and I 2%ii ol'said binding agent by weight, and hetween 75%Y and 85%V. water by \.\,ight Afternatively the eradicator fluid contains between 9% and of'said basic niitroge-)n COMp)oundI by \-veight, between 15% and 25 3n1 of said filln-forming polymner by weighit. and het'veeni 75"1"( and 9S% water by weight; and/or said ink contains between and 4% of'said dye by weight, between 8% and 12% of' said binding agent by weight, and between 75% and 85%o water by weight Suitably the combination of the firsi, aspect hias one or more of the following FeCatures: ;3 (at) the pl of said eradicator fl uid is between about I I and about 12; \~~RAlit 11/01, '01 THU 11:01 [TX/RX NO 75981 11. J R11. U U iI n: U btKUbUf tHUK I~N, j,:il4i NU. M~b f. ],Z the dyc comlprises a triaryl mnethane; the ink further comprises an organic acid.

As an alternative the combination of the first asp:ect has one or more of' the the pH of said eradicator fluid is between abolut 10 and aboLIt I I; thc dyc comprises a tiaryi rnethane;, the ink further coniprises anl orkyanicacid.

SLII tably the combination of dhe first aspect lias eric or miorc of' (he following in(a) the eradicator fluid has anl eradication time n-les.s than 3) seconds.

the eradicator fluid has a \vrite-over time of less than 10 Seconds.

the ink has a Surface ten)Sion of between 25 dynes/cmi Und 35 dynes/em, -ind %aid er adicator fluid has a surface tension of btween 35 dyneis/Lnm and 40 dynes/em.

As a:n alternative the comnbination ol- the first aspcct has onec or more of the kllowing Properties: a) the eradicator fluid has anl cradication tin-e ofless than 3 seconds.

the eradicator fluid has a writc-over time of less tha-n 10 Seconds.

the ink( has a sui-facc tension of between ,0 diynes/cm and 45 dynes/cm, :and said eradicator fluid has a surface tensioni of between 20 clynes/cm and 40 dynes/em-.

According to a second aspect, the present invention consists in an eradicatible ink, comprising a dye that decolorizes wvhen said ink is contacted with an 8% by weight in water sodium glycinate soluition, a. miagnesiumn or zinc, salt or mixture thereof capable of complexing with sodium glycinate, and wvater.

According to a third aspect, the present Inv~ent:ion consists inl a method of i eradicating an ink marking on a substrate, comprising applying to said substrate anl Ink con-prisimnc a dye that decolorizes if contacted with basic nitrogen compound, a binding aizent comprising a magnesium or zinc salt or mixture thereof capable of biniding said basic nitrTogeni compou~nd, and water, to provided a marking on said substrate. and 11) applying to said marking an eradicator fluid comprising said basic nitrogen eomnpov id and water.. said basic nitrogen corn pound causing said dye to decolorize.

According to a fourth aspect, the present invention consists in a mnethod of providing a marking, comprising applying an eradicator fluid containing a. basic nitrogen compound and water 13 to a substrate to provide an eradicator fluid coating on said substrate, and 7T 1.1/0-1 '01. THIU 11:01 [TX/RX NO 75981 11. JAN. 2991 11:06 SPRUSON FERGUSON 612926L15486 NO. 0226 P. 13 applying to said eradlicalor flid coatit anl Ink containing a dye that dccolorizcs if ~~~~~contacted with said basic nit' t copud idn gn opIinga innesiui or "InL salt. Or mlixtUre thereof cap-ablc oI* indimg it) said basic nitge Compolimd, and water.

l*'hI i nvention concerns the Corn binationl 0 Ian criad i caa icl ink aqucLLIS Ink and an icuLls1011 eradicator fluid. The Ink contHIS al dye thi decolorixcs contacted willi a basic itrogCen Comp1ound. suIch Ws an amnine. 'h rdiaoI idcontains the basic nitrogen compound. Imtfportantly, the ink also Hiludes a basic niitro-cin compound binding agent hat can bind the excess basic nitrgeni compound in dhc. crad cator luhid. As a result, Mi when hew ink IS Used to overwrite Lin airea to which thie eradicator (luid has been applied, [lie rell-tiling basic nitrogen compoun11Ird II the eliadiCato' [flid becomes boundl~ to thle nitro-cii compound bindinue algell inl til hc k. anld aCCOrd*1ng11: dOCS not1 Cause Significant (Iccoloritatilon of the dye. The ink malrk made o)VCI thc. cruaicd areal thus hias a reduced 1icdcilc to Cadu over timec.

c lprclorred dyes are triaryl meithianes. The prue lreci basic itrogen compounds ar nmivoallc ontoicamne lk sdim lyi at.The prel'erred binding agents urc ifagncsium or zinc salts or Illxttires thereof'. NilacnesMiti salts like magnesium sulfate and 'zinic salts like Yzinc salfiate are cxamp lcs of' preferred hindim.o agents.

lrclrrcd eradicator fluids also in1C.1Ludc -I ilm-l'Ormimnr polymer. -Fhe lilm-Foiming poly. mer providiz. a thin filrn onl the Cr;adiCa1Icd arca, and a.S aI reSult may decrease the writc-ovcr. time. It also may slow thie diffusion of I-he eradicator lid to the paper, and *may Improve. write-over quality, Preferred lhlm-forming polymers include polyacrylic acid sodiurn salts.

Plrefei-red eradicator fluids hiave an erandication t-imc. of less thant about 3 seconds, and mote preferably less thanl 2 seconds. lmcc ededicator fluids have a write-over lime of less thanl about 15 SeCOOILIS and more pirel'erahly less than 10 seconds.

'The invention also feltur'es anl eradicatible ink including a dye that decolorizes when thie ink is contacted with an 891%%,eight In Water sodium-11 glycinate Soluhion, and a InaencsIurnl or ztinc salt or mixture thereol capable of eomplcmig with. sodium glycinate.

.M I-le Invention also 'features a method of Feradi catling an Ink marking oil a substance.

Tlhe method Includcs two steps. First, ant inlk containing a dye that decolorizes if contacted with a basic nitrogen compOUld, a binding aigen. comprising a mnagnecsium or /ile salt. or mIixture thercof capable of bi.nding~ the tbasic itirogTen Compound, and water is 'IppliedI to the substrate to provide it marking. Second. an eradicator fluid including the 7)l It IItiIij')IM 1 'r Ii'ic 11/01. 01J THU 11:01 [TX/RX NO 75981 11. JAN. 2001 11 :07 SPRUSON FERGUSON bI'61 ib8 NO, U225 P. 14 basic n1itrogent compound and water is applied to the marking. The basic nitrogen compounWrd causes the dye to decolorize.

The Invention ailso fleaturIeS another method of providng zi markiag. This method al1SO incCludes two steps. First, anl eradicator fluid containiing a basic nitr-ogen compound Mid ILLI atrIs applicd to a substrate to prox'ide ani era"dica tor- 11i ~d cotii. Second, ain ink containnllg it dye that decolorizes if con~tacted wVith thec basic nitrogen compound, a binldingioenit comprising at magnesium or zinic sailt ol' mixture thereof capable of bindirn to dhe basic nitrogen comound, and %materl is applied to th~e eradicator fluid coating.

Pr1-0i6cmbly, theC method also includes initially making at mark -m (lhe substraie, over which N ho crodicator luid is applied, with the same ink.

"Fi-adication system", as used her-ein, metans that anl ink and an eradicator fluid c0mbintation aire stared unmixed In the samrc genierzil packaoinig. For example, thc ink can he inl onec container and the eradicator flluid inl a seconid containrr but the two containers arec included in) the samne package.

:Other featUres and advantages of the invenition- '-viii be apparen-it F rm the description *ofthe pref'erred embodiments thereoF' and from the claims.

Description of the Preferred Embodiments Pr-eferred combinations Include anl ink and an cradicat.or fluid, The inlk con1tains a :friary! methane dye, a magnesium or zinc salt callable of bin-ding to the amine used in the eradicator fluid, ant organic acid, a polyacrylate 1i1 -forrnin polymer, and water. Thc cradicator fl1,id includes a non-volatile qmiiie capable of clecoiorizing the triaryl methane dye, ,I filmi-for'm ing poly mler, and water. IhL: in n h ea iao'lud as a include a surfactant to ad ust surface tensionl.

Triaryl methane dyes tbat art; capable of V R..

naM a.4.41.

11/01. 'n1- 1-1l1 11:01 [TX/RX NO 75981 4 decolorizing in the presence of an amine are known to those skilled in the art. Examples include Acid Blue 93 and Acid Blue 22. Enough dye should be included in the ink to provide the desired color intensity, but not so much that large quantities of eradicator fluid must be applied to a mark made with the ink to cause it to decolorize. Preferred inks include between 2% and and more preferably with between 3% and of the triaryl methane dye by weight.

The preferred metal salts are capable of binding to the amine used in the eradicator fluid. The metal salt preferably also is soluble in the ink. Examples of salts are magnesium sulfate and zinc sulfate. sThe ink should include a quantity of metal salt sufficient to bind to excess amine when the ink is applied to an eradicator fluid layer made over an ink mark. But not so much metal salt should be included that excessive quantities of eradicator fluid must be applied to eradicate the ink mark being corrected. The ink mark to be corrected may include the metal salt, and enough amine must be in the eradicator fluid both to bind with the metal salt in the ink mark and to decolorize the dye. Preferred inks include between and 15%, and more preferably between 8% and 12%, of the..

metal salt by weight.

The organic acid increases the acidity of the ink and as a result increases the color intensity of the triaryl methane dye. Examples of organic acids include citric acid, and tartaric acid. A sufficient quantity of the organic acid should be included to provide an ink including a dye of the desired intensity. Preferred inks may include between 1% and and more preferably approximately of the organic acid by weight.

rA The polyacrylate film-forming polymer can j mprove the color intensity and reduce feathering from WO 97/31070 PCT/US97/03051 5 write-over. Examples of polyacrylate film-forming polymers include Sokalan CPlOs, CP12s, and PA13PN, all of which are available from BASF. Enough polyacrylate film-forming polymer should be included in the ink to provide the targeted benefit, but not so much should be included that the viscosity of the ink becomes undesirably high. Preferred inks may include between 1% and and more preferably between 2% and of the polyacrylate film-forming polymer by weight.

Enough water should be included in the ink to dissolve the components and provide the ink with the desired viscosity. Preferred inks may have a viscosity between 1 cps and 3 cps, and more preferably between 2 cps and 2.5 cps. Preferred inks may include between 75% and 85% water by weight.

The non-volatile amine in the eradicator fluid causes the triaryl methane dye to decolorize when the fluid is applied over a mark made with the ink.

The amine selected, in addition to preferably being non-volatile, should be non-toxic, and preferably odorless. Examples of preferred amines include glycine (in the form of sodium glycinate), other amino acid salts and polyamines.

Enough amine is included in the eradicator fluid to decolorize the dye when applied in reasonable quantities to a mark made with the ink. But large quantities of amine may interfere with the ability of the metal salt in the ink to sufficiently prohibit fading of a corrective ink marking applied to the hardened eradicator fluid. Preferred eradicator fluids may include between 7% and 12%, and more preferably between 8% and 10%, of the amine by weight.

The film-forming polymer increases the viscosity of the eradicator fluid. It also may decrease writeover time by providing a thin film on the surface of a covering made with the eradicator fluid; the thin film increases the hardness of the surface, SUBSTITUTE SHEET (RULE 26) WO 97/31070 PCT/US97/03051 6 and may make the surface suitable to receive a mark made with ink even though the eradicator fluid has not fully dried. The film-forming polymer should be compatible with the amine used in the eradicator fluid.

Preferred film-forming polymers are sodium salts of polyacrylic acids. Preferred polyacrylic acid filmforming polymers have a number average molecular weight of between 1200 and 5000.

A sufficient quantity of the film-forming polymer is included in the eradicator fluid to provide the desired film and viscosity. Too much film-forming polymer may raise the viscosity to undesirable levels.

Preferred eradicator fluids may include between 15% and and more preferably approximately 20%, of the film-forming polymer by weight.

Enough water should be included in the eradicator fluid to dissolve the components and provide the fluid with the desired viscosity. Preferred eradicator fluids may have, for example, a viscosity between 5 cps and 15 cps, and more preferably between 6 cps and 7 cps.

The eradicator fluid also preferably contains a buffer to maintain the pH of the solution at, for example, between 11 and 12 (more preferably at approximately 11.7). Preferred eradicator fluids may include, for example, between 75% and 85% of the aqueous buffer solution by weight.

The surface tension of the ink and the eradicator fluid can impact the eradication and writeover performance of the eradicator system. The surface tension of the ink preferably is between dynes/cm and 45 dynes/cm, and more preferably is approximately 40 dynes/cm. The surface tension of the eradicator fluid preferably is between 20 dynes/cm and 40 dynes/cm, more preferably is between 25 dynes/cm and dynes/cm, and most preferably is approximately dynes/cm. The surface tension of the ink and SUBSTITUTE SHEET (RULE 26) WO 97/31070 PCT/US97/03051 7 eradicator fluid may be adjusted using conventional surfactants. If the surface tension of the ink is too low, the ink may penetrate too far into a paper substrate too quickly relative to the eradicator fluid that subsequently is applied. If the surface tension of the eradicator fluid is too high it may not penetrate into the paper as far, or at least as quickly, as the previously applied ink. This could lead to either incomplete eradication or an extended eradication time.

Other conventional ingredients such as bactericides, thickeners, and colorants can be included in the ink or the eradicator fluid.

The preferred inks and eradicator fluids can be used in roller ball point pens, pens which include a tubular member for fluid communication with a reservoir (either a fiber or hollow reservoir); a socket, having a seat, at one end of the member, an interior wall surface extending from the seat; a rim disposed at the end of the interior wall surface 0opposite the seat; and a spherical ball that is disposed in the socket, rotatably engagable with the seat and captured by the rim. The writing instrument may also include, for example, a felt tip. The inks and eradicator fluids may also be used in fountain pens.

In one embodiment, the ink and the eradicator fluid are supplied in separate pens. If desired, several ink containing pens may be provided, each pen containing an ink.

In another embodiment, the ink and the eradicator fluid are supplied in a single pen, containing a reservoir for each. Each reservoir may be either a hollow or fiber reservoir. The two reservoirs are surrounded by a tubular member, a polypropylene barrel. If the pen is a marker, it includes nibs at opposite ends, each nib being covered by a cap. An example of a suitable nib is the SUBSTITUTE SHEET (RULE 26) 8polyethylene chisel nib available from Interfia.

Alternatively, if it is a roller ball point pen it includes a ball and socket. structure, as described above and as is well known in the art, at each end.

The ink reservoir may be large enough, for example, to include approximately three times as much fluid as the eradicator fluid reservoir. I~ The inks and eradicator fluids may be prepared-by mixing the components.

Example 1 An ink was prepared by mixing 4 parts Acid Blue 93 (available from Orient) 2 parts citric acid, parts magnesium sulfate, 2.5 parts. Sokalan CP1Os (available from BASF) and 81.5 parts water.

An eradicator fluid was prepared by mixing parts sodium glycinate, 20 parts polyacrylic acid sodium salt (cat. no. 42034-4, available from Aldrich), 0.2 parts surfactant (Dynol, available from Air Products) and 70 parts of an aqueous buffer solution 26 (pH 11. One liter of the buf fer solution included 1.4841 g of boric acid, 4.1050 g of sodium hydroxide,:.* 1.4 ml of acetic acid, and 1.4 ml of phosphoric acid.

The ink was used to write on Ampad note paper (available, for example, from Phase One Office Products::: Co., cat. no. AMP-20-372). The eradicator fluid was applied over a portion of the ink mark. Af ter the eradicator fluid had hardened sufficiently, corrective ink marking was- applied. No fading or feathering of the corrective marking was observed.

Example 2 An eradicator f luid was prepared by mixing (by total weight) zinc sulfate, 2.5% Sokalan CPl08, 2% citric acid, 41% Acid Blue 93, and 81.51%-o water.

Example 3 An eradicator fluid was prepared by mixing (by total weight) zinc sulfate, 5% magnesium sulfate, Sokalan CPl0s, 2% citric acid, 4% Acid Blue 93, SUBSTITUTE SHEET (RULE 26); WO 97/31070 PCT/US97/03051 -9and 81.5% water.

Other embodiments are within the claims. For example, an eradicator fluid can be used in combination with two inks, one including a metal salt that binds the amine in the eradicator fluid, the other lacking the metal salt. An ink mark can be made on paper with the ink lacking the metal salt, and the eradicator fluid applied to decolorize the dye. A corrective marking then can be made with the ink including the metal salt.

SUBSTITUTE SHEET (RULE 26)

Claims (7)

11. JAN. MI IMI FMKUN KUU1N !L JLI!4db INU. Mu r. 1 Thle Claims dcfining the invention are as follows: I An inkc ard cradicator fluid combination, comprising an eradicator fluid containing a basic nitrogen compound and w~ater', arid an inkl containing a dye that decolorizes if contacted with said basic nitrogen comipound. a binding agent comnprising a mnagnesium or zinc salt or 11mixtue thereof capable o F7 binding said basic nitrogen coinpound. ,ind water. 2. The combination of' claim 1. wherein said cradicatorfid n/rsi n Cirdhcr i icluides a fil- [forming polyrmcr. The combination of claim 2, '.vherein sai fi-(lrmin, polymer included in ;aId oridleamor fluid comnprises a polyacrylic acid salt, and/or said film-Forming polymcr iIOClLIdCd in said ink comnprises a polyacrylate. 4. The combination of claim 2, wherein said eradicator fluid Contains between 8% and 10% of said basic nitrogen compound by \'ulght, between 15% and 25% of said lili-form-ing polymer by weight, and between 60140 and 70 water by weight, anid/or 15 said ink contains between 3% and of said dye by weight. between and I 2%Y of said binding agent by weight, and between -759/ and 8%water by weight. 5. The combination of claim 2, wvherein the eradicator fluid contains between and 10% of said basic nitrogen compound by weight,. between 15% and 25% of said filmI-I"orMing polymer by weight, and between 75 and wNatcr by weight; and/or said ink contains between 3% and 4%x' of' said dye by weight, between 8% and 12% 61' said bi rding agent by weight, and between 7% andc 85%X -water by weight. 6. The combination of any one of claims 1 to 3. haxving one or more of the fol1lowinig features: the pl of said eradicator- fluid is b~etween about I1I and about 12; 23 wherein said dye comprises a triaryl vnethanc: 09 0 0 *0 *0 0 0 0 00 @0 0 0 S 000000 S *9 9 *0 00 A S a flee 0 S Sn 0 S *0*S 0 9 1**0 0 00009* 9 OS*0S. O a (c) 7. [he fo11vllin fcatur said intk further comprises an organiic acid,- combination of any one of' claims 1 to 5, hav'ing one or more of' the the pH of said eradicator fluid is bctweeii aThout 10 and about 11; wherein said dye comip-ises a. triaryl mnethane: said ink further compriscs an organic, acid, 8. The combination of any one of claims 1 to wherein said bindin, compr'ises a magnesium salt 9. The combination of any one of claimns I to 7, wherein said bindin comprises a zinc salt. gg agent g agent [ImI.II)IIFjoL)IASPCCi O'Knja 11/0. oii. Trntf 11t:01 [TX/RX NO 75981 11.JAN. 2001 11:05 SP RU SON FERGUSccO'NC c LI 2'6154 8" NO. 0225 P. 9 1 0. The combination of any one of claims 1 to 9, wherein said basic nitrogen compound comprises an amine. 11. The combination of claim 10 wherein tile amine is sodium glycinate. 1 2. The combination of any one ol'claimis 1 to 11, having one or more of the .4 ollowing properties:, said eradicator fluid has an eradication time of less than 3 seconds, said eradicator fluid lias a write-over time of less than 10 Seconds. said ink has a surface tension of bct-cen 21 dynets/cm and 35 dynes/cmn, and said cradicator fluid has a suriFace tension of betweecn 3 5 dynes/cm. and 40 dynes/cm. 1 11. The combination of any one of claims 1 L 1 1 havinig one or more of the following properties: said eradicator fluid has an eradication time of less than 3 seconds. said eradicator fluid has a write-over timle of less than 10 Seconds. said ink has a surface tenision ofbetweeri 30 dynecs/cm and 45 dynes/cil, and said eradicator fluid has a surface tension of betwveen 20 dynes/emn and 40 dynes/cm. :14. An eradicatible ink, comprising a dye that deccolorizes when said ink is contacted with an 8% by weight in water sodium glycinalte solution, a mnagnesiumn or zinc salt or mixture thereof capable of coniplexing wvith sodium glycinate, and water, The eradicatible ink of claim 14. wherein said ink further comprises a non- volatile organic acid. *16. A method of eradicating an ink marking on a substraIte, Comprising applying to said substrate ano inkc comnprising- a dye that decolorizes if contacted with a basic nitrogen compound. a binding agent comprising a. magnesium or zinc salt or mixture thereof capable of'binding said basic nitrogen compound, and water, to provide a marking on said substrate, and applying to said marking an eradicator fluid comnprising said basic nitrogen compound and water, said basic nitrogen compound Lcausinr said dye to decolorize.

17. The method of claim 16,, wherein said basic inilrogen comipound comprises an .101 8. A inethod of providing a marking, comprising applying an eradicator fluid containin~g a basic nitrngen compound and water to a substrate to provide an eradicator fluid coating on said substrate, and applying to said eradicator fluid coating ai) ink containing a dye that decolorizes if contacted with said basic nitrogen compound, a binding agent comprising a 71 -o 11/01 '01 TIM 1.1:01 [TX/RX NO 75981 11. dJft OU I1 Ii: U b f XU Mi 1'tXUU!1, 0 1 W~U Mb f. lU magnesium or zinic salt or mixture thereof capable of binding to said basic nitrogen COlIpO-ind, and water.

19. Ani ink and eradicator fluid combination, SUbS~antial1y as hereinbefore described with referene to any one of the exlamples,

20. An eradicatible ink, substantially as hicreinibefore described with reference to any olic of the examples. 21 A method of eradicating an inkl mar-king on~ a substrate, substantially as hercinbe-fore desc ribcd with reference Lo any onec of the ex'an-ples

22. An ipik marking on a substrate Lvhencv'cr eradicated by the method of claim I 16, 17 or 2 1.

23. A method of providing a marking. substantially as hereinbefore described with reference to any one of the examples.

24. A marking whenever provided by thie method of cli n 18 or 23 Dated 11 January, 2001 1.5 The Gillette Company Patent Attorneys for the Applicant/Nominated Person SPRUSON FERGUSON S S S S S i it \ui3n: iw) qjC 11 01 01 THU 11I: 01 [TX/RX NO 7598]