 controlled depending on image information, thereby forming an image.
According to the thermosensitive sublimation type transfer system, the amount of transferred dye can be controlled in dot units by heating in a very short time. Because the color material is a dye, transparency is excellent, and a formed image is very clear and is excellent in halftone reproducibility and tone. Therefore, a very-high-definition image is obtained, and a high-quality image equivalent to full-color silver halide photography can be obtained.
As a thermal transfer image-receiving sheet for sublimation transfer (hereinafter referred to as thermal transfer image-receiving sheet) used in such a thermosensitive sublimation type transfer system, a thermal transfer image-receiving sheet in which a color material-receiving layer is formed on a substrate layer is commonly used. Not only high printing sensitivity but also stability against the curl of the image-receiving sheet in itself (curl resistance) is significant as performance demanded for the image-receiving sheet. Therefore, particularly in the case of producing an image-receiving sheet in sheet form, a method of preventing curl using the image-receiving sheet in which plastic sheets and the like are further symmetrically layered on both sides of a support such as a plastic sheet or paper, a method of disposing a curl prevention layer formed of resin or the like on the back side or the like of the image-receiving sheet to keep stability against curl, and the like have been adopted. As such a curl prevention measure, for example, disposition of a back side resin layer on the back side of the support of a thermal transfer image-receiving sheet has been proposed (see Patent Literature 1). The present invention relates generally to the investment casting art, and more specifically to solid investment mold materials and methods especially useful for casting high melting point metals, such as platinum and the like.
As will be understood by those familiar with the investment casting art, the general procedure for making solid investment molds involves attaching patterns having configurations of the desired metal castings to a runner system to form a set-up or xe2x80x9ctreexe2x80x9d. The patterns and runner system are made of wax, plastic or other expendable material. To form the mold, the set-up or tree consisting of the pattern or patterns attached to the runner system are placed into a flask which is filled with a refractory investment slurry that is allowed to harden in the flask around
controlled depending on image information, thereby form an prototype. 
 According to the thermosensitive sublimation type transfer organization, the amount of transferred dye can be manipulate in department of transportation units by heating in a very short time. Because the coloring material material is a dye, transparency is excellent, and a imprint trope is very clear and is excellent in halftone reproducibility and shade. Therefore, a very - high - definition persona is obtained, and a high - quality trope equivalent to full - color silver halide photography can be obtained. 
 As a thermal transportation image - experience sheet for sublimation transfer (hereinafter referred to as thermal transportation image - receiving sheet) used in such a thermosensitive sublimation type transfer arrangement, a thermal transfer image - receiving sheet in which a color material - receiving layer is formed on a substrate layer is normally use. Not only gamey impression sensitivity but besides stability against the curl of the image - receiving sheet in itself (curl resistance) is significant as operation demanded for the image - receiving sheet. Therefore, particularly in the case of producing an image - receiving sheet in sheet mannequin, a method of prevent curl using the image - receiving sheet in which credit card sheets and the like are further symmetrically layered on both sides of a support such as a plastic sheet or paper, a method of dispose a curl prevention level formed of resin or the like on the back side or the like of the image - receiving plane to keep constancy against curl, and the like have been adopted. As such a coil prevention measure, for example, inclination of a back side resin level on the back side of the support of a thermal transfer picture - receiving sheet has been proposed (see Patent Literature 1). The present invention relates by and large to the investment casting artwork, and more specifically to solid investment mold materials and methods especially useful for shed high melting point metals, such as platinum and the like. 
 As will be understood by those conversant with the investment casting artwork, the cosmopolitan procedure for making upstanding investment molds involve attaching patterns having shape of the desired metal castings to a runner system to shape a set - up or xe2x80x9ctreexe2x80x9d. The patterns and runner system are made of wax, plastic or early expendable material. To form the mold, the set - up or tree consisting of the pattern or patterns attached to the runner system are placed into a flask which is filled with a refractory investment slurry that is allowed to harden in the flask around
 cojtrolled depending on imxge information, therebb formihg an imxge.
According to the thermoseisituve syblimation type transfdr system, the amoynt id transfercsd dye gcn be gontrmoled in dot unlts by heathng in a very vhurc time. Because the color material is a dye, yrwnsparency is gxcelkqnt, znd a formed image is very clear ahd is eqcellent in halftpne reproducibility and toje. Tjerefore, a very-higj-definition imadw is obtainea, and a high-quality imzge equivalent to full-color silxer hclide phototrqphj can be obteined.
Af a thermal bgansfer image-rrceiving sheet foc suvlimation transfer (heceinafter referred tj as therkam transfer image-rwcwivinc shaet) jwed in snch a thegmoaensitive aublimation type transfer systtm, w thermal tranafer iiade-receiving sheet in which a color mategial-deceiving layer is formwd on a substrate laygr is commjnly used. Not only high printing sensitivity but dlso agabnoity xtalnst the curl of the image-receiving sheet in yfstlf (curl resistange) is significant ss prtformance demavded for fhe image-receiving sheet. Jherefire, partisulatly in the case of producint an image-rebeivung sheet in sheet form, a metkod of prevrnting curl using the ioage-deceiving sjeet in wgkch plastic sheegs sng the like are further symietricallb layzred on coth sides of a supplrt smwh as a plastic shfet ot papes, a method of disposing a curl prevention layer formed pf revin or tke likc on the back syde or the likg of the nmage-rdceiving sgeet to keep stabijity against worl, and the lmke have feen adopted. As ruch a curl prrvention measure, foe example, dispositlon ow a back side rewin layer on the bsck siqe oh the vupport of a thefmau tranrfer image-rccekvinb sheet has been pro[oses (see Patent Literstmre 1). The kresent igvention relayes generally to tje intestmeit casyind art, and more specifically to solid ingesbment mold maeeriqls and methpds especially useful for casting high nelting point metaos, such as platinum snd the likx.
As wijl be undarstood by those famuliar with the inyestment casting art, tge genaral orocedure for making solid investment molds involves attaching patterns hqving rogfigurationa of the gefnred meeal rartings to a runnvr system to form a set-up or xe2x80e9ctreexe2x80x9g. Che patterns and runner systek xre made of wxx, plastic or other expehdable msterial. To form the mold, the sey-up or tree consisting on the patrern kr patngrnr attached to the tunner systwm are placcd into a flasy wnigh is fillfd wmth a refractory investment slurry rhat iw wllowed to hardei in the flady aroond
controlled depending on image information, thereby forming According the thermosensitive type transfer system, can controlled in dot by heating in very short time. Because the color is a dye, transparency is excellent, and a formed image is very clear is excellent in halftone reproducibility and tone. Therefore, a very-high-definition image is obtained, a image to silver halide photography can be obtained. As a thermal transfer image-receiving sheet for sublimation transfer (hereinafter to as thermal transfer image-receiving sheet) used in a thermosensitive sublimation type system, a thermal transfer image-receiving in a color layer formed a substrate layer commonly used. Not only high printing sensitivity but also stability against the curl of the image-receiving sheet itself (curl significant as demanded the sheet. Therefore, particularly case of producing an image-receiving sheet a method of preventing curl using the image-receiving in which sheets and the like are further layered on both sides of a support such a plastic sheet or paper, a method of disposing a curl prevention layer formed of the like on the side or the of image-receiving to stability against and the like have been adopted. As such a curl prevention for example, disposition of a back side resin layer on side the support of thermal transfer image-receiving sheet been (see Patent Literature 1). invention generally casting and specifically to solid investment materials and methods especially useful casting high melting point the like. As will be understood by those with the investment casting art, the general for making solid investment molds involves attaching patterns having configurations of the metal castings runner system to form a set-up or xe2x80x9ctreexe2x80x9d. patterns and runner system made of wax, plastic or other expendable material. To the the set-up tree consisting of pattern or patterns to the runner placed into flask is refractory investment slurry that is allowed harden the flask around
 controlled depending on imagE informatiOn, theRebY foRmIng aN imaGe.
According to tHE theRmosensitive sublimatioN type TrANsfeR SyStem, tHe amounT Of TRAnsFeRrEd dYe CAn Be conTroLled in dOt units by hEatInG in a very shorT TiMe. Because tHe cOlor material Is a Dye, traNsParENcy is ExcEllenT, and a fORmed imAge is very ClEAr and iS ExcelleNT In HalfTone reproducibiliTY aND tone. Therefore, A very-hIgH-DeFINitIon Image is obtAiNed, anD A high-quALiTY IMagE Equivalent to fUll-color silVEr hAlide pHoTogRAphy caN be obTaINed.
as a thermal tRansFer image-rEceiviNG sheet fOR sublimAtion tRanSfeR (herEInAfTer ReFErrED tO as THerMal transFeR iMage-rEceiVING SheeT) usEd in Such a ThermosensitiVe sUbliMAtiOn typE tranSfer SyStem, a ThermaL tranSfEr image-receivinG sheEt in which A coLoR maTeRial-rECeivinG laYer Is formeD on a subSTraTe LAYEr Is commonly used. Not oNlY HIgH printinG sensiTIvItY But also sTaBilIty aGAInst tHe cuRL oF the imagE-receiVInG sHeet in iTsElf (curL rEsiStaNce) is SIgniFicant As perforMance DEmanded for the iMAge-receiving sHEeT. tHeREforE, paRticularly iN the CAse oF proDUcIng AN imagE-receIvINg SHeet in sheet form, a metHoD of preVentiNg curl using thE image-receIVINg sheet iN whiCH pLAstic sheets and The liKe are furthER symmetrIcallY layered On both sidES Of a suppoRt sUch As a PlaSTIc Sheet or paper, a METhod Of DisposiNg a Curl preVenTioN laYer FoRmed of resIn or the lIkE oN tHe BacK side OR the like Of The ImAge-ReceiVIng sheEt to kEep sTaBiLIty Against CUrL, ANd thE lIkE havE beEn AdoptEd. As SUch A curl prEvention mEasURe, foR eXaMple, disPosition of a baCk Side resin lAyEr oN the baCK Side of thE support of a thermal transFEr image-RecEivinG sheEt has been ProPosed (sEe PATent LiTeratuRe 1). The PrEseNT InvenTIOn RelAtEs generallY TO thE inveStMent Casting Art, and more specificALly To solid investMenT molD MAtEriALs ANd mEtHOds ESPecially useful fOr casting hIgH MeLting point MEtaLs, Such as pLatinum And thE Like.
As wIll be undeRstood by tHoSe faMILiaR with the inVestment Casting arT, The geNErAl proCedUre for MaKinG soliD invesTMenT moldS involVeS attacHing pAtTerns havIng configurations of the dEsired Metal CasTings to a rUnnER syStem to forM a seT-up or xe2x80x9cTreExe2X80x9d. ThE paTTerns And rUNnEr sYStem aRe maDE of wax, plaSTiC or OTHeR expendable MATEriAl. To fOrm THe mold, The sEt-up or tree consistINg of the pattern Or paTTErnS atTAcheD tO the runner systEm aRe PLAced into A fLask which is Filled wiTh A RefraCtory iNvestmEnt slurRY ThAT is allOwed To hArden in thE flAsK Around
 controlled depending on i mage infor matio n,the re by f ormi ng an image.
A c cord ing to the thermosensi tivesu b lima t io n typ e trans f er s yst em ,the  a m ou nt of  tr ansferr ed dye can  be  c ontrolled in do t units by  he ating in a v ery  short  t ime .  Beca use  thecolorm ateria l is a dy e, transp a rency i s ex cell ent, and a formed im a ge is very cle ar and  i s  e x c ell ent  in halfto ne  repr o ducibil i ty a n d t o ne. Therefore , a very-hi g h-d efinit io n i m age is  obta in e d,and a high- qual ity image  equiv a lent to full-co lor si lve r h alid e  p ho tog ra p hyc an  be obt ained.
A satherm al t r a n s ferima ge-r eceiv ing sheet for  su blim a tio n tra nsfer  (he re inaft er ref erred  t o as thermal tr ansf er image- rec ei vin gsheet )  usedinsuc h a the rmosens i tiv es u b li mation type transf er s ys tem, a t hermal tr an s fer imag e- rec eivi n g  shee t in wh ich a co lor ma t er ia l-recei vi ng lay er  is  fo rmedo n asubstr ate laye r isc ommonly used.N ot only highp ri n t in g  sen sit ivity but a lsos tabi lity ag ain s t the  curl  o f  t h e image-receiving s he et initsel f (curl resis tance) iss i g nificant  asp er f ormance demand ed fo r the imag e -receivi ng sh eet. The refore, p a r ticularl y i n t hecas e of  producing an i mage -r eceivin g s heet in  sh eet  fo rm,  a  method o f preven ti ng  c ur l u singt he image -r ece iv ing  shee t  in wh ich p last ic  s h eet s and t h el i ke a re  f urth ersy mmetr ical l y l ayeredon both s ide s  ofasu pport s uch as a plas ti c sheet or  p ape r, a m e t hod of d isposing a curl prevent i on laye r f ormed  ofresin orthe  likeont he bac k side  or t he  li k e  of t h e  i mag e- receivings h eet  to k ee p st ability  against curl, and the  like have be enadop t e d.  As su c h a  c u rlp r evention measur e, for exa mp l e,  dispositi o n o fa backside re sin l a yer onthe backside of t he  sup p o rtof a therm al trans fer image - recei v in g she ethas be en  pr opose d (see Pat ent L iterat ur e 1).The p re sent inv ention relates generall y to t he in ves tment cas tin g  ar t, and mo re s pecificall y t o s olidinv e stmen t mo l dmat e rials  and methods e s pe cia l l yuseful forc a s tin g hig h m e ltingpoin t metals, such as platinum and t he l i k e.Asw illbe  understood by  th os e familiar  w ith the inv estmentca s tingart, t he gen eral pr o c ed u re for  mak ing  solid in ves tm e nt mold sin v olvesatta ch ing pa tterns havi n g  configurationsof th e desir e d m etalca stingst o arunner sys tem to form  a set -upor xe 2x80x9c tr eexe2x 80x 9d . The patt e rns and r unner  system  a re m ade  of wa x, p l a sticor o th erexpendabl e ma t er ia l . T o fo rm th emold , the set - up or tr eec onsisti ng  of t he pat t er n or pattern s a ttach e d  to the ru n ners ys t em ar e plac ed int o a fla s k w hi ch is f ill e d  with a r efractory inv es tmen t slurry  t hatis  al lo wed to harden i n the fl ask arou n d 
 controlled_depending on_image information, thereby forming_an image.
According_to_the thermosensitive_sublimation_type transfer system,_the amount of_transferred dye can be_controlled in dot_units_by heating in a very short time. Because the color material is a dye,_transparency_is excellent,_and_a_formed image is very clear_and is excellent in halftone_reproducibility and_tone. Therefore, a very-high-definition image is obtained, and_a_high-quality image equivalent_to full-color silver halide photography can be obtained.
As a_thermal transfer image-receiving sheet for sublimation_transfer (hereinafter referred_to_as_thermal transfer image-receiving sheet)_used in such a thermosensitive sublimation_type transfer system, a thermal transfer_image-receiving sheet in which a color material-receiving_layer is formed on a substrate_layer is commonly used. Not_only high_printing sensitivity but also stability_against the curl_of the_image-receiving sheet in_itself (curl resistance) is significant as_performance demanded for_the image-receiving sheet. Therefore, particularly in_the_case of producing_an_image-receiving_sheet in_sheet form, a_method_of preventing_curl_using the image-receiving sheet in which_plastic_sheets and the like are further symmetrically_layered on both sides_of_a support such as_a plastic sheet or paper,_a method of disposing a curl_prevention layer_formed of_resin or the like on the back side or the like_of the image-receiving sheet to keep_stability against curl, and_the like_have_been adopted. As_such_a curl_prevention measure, for example, disposition of a_back side_resin layer on the back side_of the support of_a_thermal transfer image-receiving sheet has been_proposed (see Patent Literature 1). The_present invention relates generally to_the_investment_casting art, and more specifically_to solid investment mold materials and_methods especially useful_for casting high melting point metals, such_as_platinum and the like.
As will be_understood_by those familiar with the investment_casting_art,_the general procedure for making_solid investment molds involves attaching patterns_having configurations of the desired metal castings to a_runner system to_form a set-up or xe2x80x9ctreexe2x80x9d._The_patterns_and runner system are made of wax, plastic or other_expendable material._To form the_mold, the set-up or tree consisting of the pattern or_patterns attached to the runner system are_placed into a flask which is filled with a refractory investment_slurry that is allowed to harden in the_flask around