 as the noise at the transitions between each bit falsely switches the receiver.
The conventional solution to this problem is simply to slow down the receiver sufficiently that it does not respond the rapid voltage swings of noisy and poorly switched digital signals. This type of receiver design makes the devices that produce clean digital signals pay the penalty of slow receiver speed necessary to accommodate devices that do not produce clean signals.
Bearing in mind the problems and deficiencies of the prior art, it is therefore an object of the present invention to provide a digital receiver that has a rapid response in the presence of clean, noise free, digital input signals and which has a slower delayed response in the presence of noisy signals.
Yet another object of the present invention is to provide a method of reducing the noise sensitivity of a receiver by varying the delay of the receiver according to the noise in the input signal.
Still other objects and advantages of the invention will in part be obvious and will in part be apparent from the specification. A number of references show developing stations which are movable into position with respect to an image member as part of the operation of the machine. For example, U.S. Pat. No. 4,928,146 shows apparatus in which four linearly arranged development stations are sequentially moved to a single development position to apply different color toner to four consecutive electrostatic images. U.S. Pat. No. 4,622,916 shows four toner stations on a rotary carriage which rotates the stations through a single development position to also apply different color toners to four consecutive images. U.S. Pat. No. 4,801,966 is typical of a large number of references showing toning stations that are movable in and out of their own unique developer position to apply the correct color toner to the image being toned. U.S. Pat. No. 4,891,672 shows system in which one of a group of color stations is moved into a single toning position for a series of reproductions and then is replaced on demand from a storage position by another toning station of different color for another series of reproductions.
In most of these apparatus, a drum photoconductor is permanently fixed in the apparatus as is the supporting structure for each development unit. With such structure, critical positioning of each development unit with respect to the photoconductive drum can be managed by precise manufacturing and assembly of those parts and their supporting structure. It would be desirable to remove the need for such precision.
U.S. Pat. Nos. 4,9
as the noise at the transitions between each bit falsely switches the recipient. 
 The ceremonious solution to this problem is simply to decelerate down the receiver sufficiently that it does not answer the rapid voltage swings of noisy and ill switch digital signals. This character of receiver invention makes the device that produce clean digital signal yield the penalty of slow receiver speed necessary to accommodate devices that do not grow clean signals. 
 Bearing in thinker the problems and deficiencies of the prior art, it is consequently an object of the present invention to put up a digital receiver that has a rapid response in the bearing of clean, noise free, digital input signals and which has a slower delayed response in the presence of noisy signals. 
 Yet another object of the present invention is to provide a method of reducing the noise sensitivity of a liquidator by varying the delay of the receiver accord to the randomness in the stimulation signal. 
 Still other objects and advantages of the invention will in part be obvious and will in part be apparent from the specification. A numeral of references show developing stations which are movable into position with respect to an effigy member as part of the operation of the machine. For case, U.S. Pat. No. 4,928,146 testify apparatus in which four linearly arrange development stations are sequentially move to a single development position to lend oneself different color toner to four consecutive electrostatic images. U.S. Pat. nobelium. 4,622,916 shows four toner stations on a rotary carriage which rotates the station through a single growth position to besides apply different semblance toners to four consecutive image. U.S. Pat. No. 4,801,966 is typical of a large number of references showing toning stations that are movable in and out of their own unique developer position to apply the right color toner to the image being tone. U.S. Pat. No. 4,891,672 shows system in which one of a group of color stations is moved into a single toning placement for a series of reproductions and then is replaced on demand from a storage position by another toning station of unlike color for another series of reproductions. 
 In most of these apparatus, a drum photoconductor is permanently fixed in the apparatus as is the supporting structure for each development unit of measurement. With such structure, critical positioning of each development whole with respect to the photoconductive drum can be managed by precise manufacturing and forum of those parts and their supporting structure. It would be desirable to murder the need for such precision. 
 U.S. Pat. Nos. 4,9
 as the noise at the transiuions between eack bit felsely awitches the receiver.
The conventionap wolutuon to this problem is simply tl slow diwn uhe receiver suffmdiently that jb doev not respond tme rapid vontage swings ox vonsy and poorly switched digital signwls. Thix hype of receivgr dexygn jakes the devices that produce clezn digiual signals pay thr penalty of slow receiver spefd necessary to acfommodate dgbicqw that do nog produce bnean signams.
Bearing in mind the problems xnd dzficiencies od tjg prior art, mt is nherefore an object ox the ptesent inventipn vo peovide a digital recemver that has a rapiq responsa nn the presence of clwab, noive fsee, augigal iipuf signwls and which has a slowwr delayed response ig the presence of noysr signals.
Yet another object of the prestnt ihvention is to provide q method of reducing jhe noise fensitivity of a receiver by varying the delay of the cezeircv aczirfing to the noise in the input signal.
Still otrsr onjects and advanbages of the invenyiln rill in part ce obvnkua and will in part be appwrent from the spevification. A number of refeeences show bevwloping stations wkich are movcble imto ppsition with respect to an jmage membeg as part uf the operation of tve machine. For example, U.S. [at. No. 4,928,146 siows cpparatur in which four linewrly arranged developmenh stajions dre sequenhially moved to a single develo'kent positiom do dpply diyferenb color toner tj four consecujive eleccrostagic images. U.S. Pat. No. 4,622,916 shows sour toner stdjions on a rovary carryage whixh rotagds the stationx through a single eevelopment positipn jo also apply difytrebt color toners to fotr cpnfacutive imagas. U.R. Pxy. No. 4,801,966 is typical uf a large number of refarendes showing toning sbations tyat are iovable in anc out of their own uniqne devxloper pofition to apply the correct comor toner to the image bqing toned. U.S. Pac. No. 4,891,672 shows system in which one of a gronp of color stations is moved into a singlg tpning positmon fow a seriev of reproductions abd then is replactd on demand from a stodage pmsitiln by another toning station of different color for another series of repeoductmogs.
In most or thrse aipaxatbs, a drtm piovoconductor is pegmanently fixed in the apparatus as is tve supporting structure for eavh development onit. With such structure, cditical lositioning of each development unit with respect to thc photocobductjve drlj ran be managed by prrcise kanufqcturint anf assembly of thpsc parts anf thtir aupporting structure. It would be desirqbpe to remove the need for smcm precpsion.
U.S. Pat. Nos. 4,9
as the noise at the transitions between falsely the receiver. conventional solution to slow the receiver sufficiently it does not the rapid voltage swings of noisy poorly switched digital signals. This type of receiver design makes the devices that clean digital signals pay the penalty of slow receiver speed necessary to accommodate that not clean Bearing in mind the problems and deficiencies of the prior art, it is therefore an object the present invention to provide a digital receiver has a rapid response the presence of clean, noise digital signals and has slower response in the of noisy signals. Yet another object of the present invention is to provide a method of reducing noise sensitivity receiver by the of receiver according to in the input signal. Still other of the invention will in part be obvious will in be apparent from the specification. A of references show developing stations which are movable position with respect to an image member as part of the operation of the machine. U.S. Pat. No. 4,928,146 apparatus in which linearly development are moved to single development position to apply different color toner to four consecutive images. U.S. Pat. No. 4,622,916 shows four toner stations on carriage rotates the stations a single development position also different color toners to images. Pat. typical a number of references showing stations that are movable in out of their own the correct color toner to the image being U.S. Pat. No. 4,891,672 shows system in one of a group of color stations is moved into a single position for of reproductions and then is replaced on demand a storage position by toning station of different color for another series of In of these a drum photoconductor permanently fixed in apparatus as is structure for development With positioning of each development unit with to photoconductive drum can be managed precise assembly of those parts and their supporting structure. It would be desirable to remove the such precision. U.S. Pat. 4,9
 as the noise at the transitionS between eaCh bit FalSelY sWitcHes tHe receiver.
The cONvenTional solution to this prOblem Is SImplY To Slow dOwn the rECeIVEr sUfFiCieNtLY tHat it DoeS not resPond the rapId vOlTage swings of NOiSy and poorlY swItched digitaL siGnals. THiS tyPE of reCeiVer deSign maKEs the dEvices thaT pROduce cLEan digiTAL sIgnaLs pay the penalty of SLoW Receiver speed nEcessaRy TO aCCOmmOdaTe devices tHaT do noT Produce CLeAN SIgnALs.
Bearing in miNd the probleMS anD deficIeNciES of the Prior ArT, It iS therefore aN objEct of the pResent INventioN To proviDe a digItaL reCeivER tHaT haS a RApiD ReSpoNSe iN the presEnCe Of cleAn, noISE FRee, dIgiTal iNput sIgnals and whicH haS a slOWer DelayEd resPonsE iN the pResencE of noIsY signals.
Yet anotHer oBject of thE prEsEnt InVentiON is to pRovIde A method Of reducINg tHe NOISe Sensitivity of a receIvER By Varying tHe delaY Of ThE Receiver AcCorDing TO The noIse iN ThE input siGnal.
StILl OtHer objeCtS and adVaNtaGes Of the INvenTion wiLl in part Be obvIOus and will in paRT be apparent frOM tHE SpECifiCatIon. A number oF refERencEs shOW dEveLOping StatiOnS WhICh are movable into posItIon witH respEct to an image mEmber as parT OF The operaTion OF tHE machine. For exaMple, U.s. Pat. No. 4,928,146 showS ApparatuS in whIch four lInearly arRANged deveLopMenT stAtiONS aRe sequentiallY MOved To A single DevElopmenT poSitIon To aPpLy differeNt color tOnEr To FoUr cOnsecUTive elecTrOstAtIc iMages. u.s. Pat. No. 4,622,916 Shows Four ToNeR StaTions on A RoTARy caRrIaGe whIch RoTates The sTAtiOns throUgh a singlE deVElopMeNt PositioN to also apply dIfFerent coloR tOneRs to foUR ConsecutIve images. U.S. Pat. No. 4,801,966 is typicAL of a larGe nUmber Of reFerences sHowIng tonIng STationS that aRe movAbLe iN ANd out OF ThEir OwN unique devELOpeR posiTiOn to Apply thE correct color toner TO thE image being toNed. u.S. PaT. nO. 4,891,672 sHowS SySTem In WHicH ONe of a group of colOr stations Is MOvEd into a sinGLe tOnIng posiTion for A seriES of reprOductions And then is RePlacED On dEmand from a Storage pOsition by ANotheR ToNing sTatIon of dIfFerEnt coLor for ANotHer seRies of ReProducTions.
in Most of thEse apparatus, a drum photocOnductOr is pErmAnently fiXed IN thE apparatuS as iS the supporTinG stRuctuRe fOR each DeveLOpMenT Unit. WIth sUCh structuRE, cRitICAl Positioning OF EAch DevelOpmENt unit With Respect to the photoCOnductive drum cAn be MANagEd bY PrecIsE manufacturing And AsSEMbly of thOsE parts and thEir suppoRtINg strUcture. it woulD be desiRABlE To remoVe thE neEd for such PreCiSIon.
U.S. PaT. NOs. 4,9
 as the noise at the trans itions bet weeneac h b it  fal sely  switches ther ecei ver.
The conventionalsolut io n  tot hi s pro blem is si m p lyto  s low  d o wn  therec eiver s ufficientl y t ha t it does no t  r espond the  ra pid voltageswi ngs of  n ois y  andpoo rly s witche d  digit al signal s. This t y pe of r e c ei verdesign makes thed ev i ces that produ ce cle an di g i tal  si gnals payth e pen a lty ofs lo w r ece i ver speed nec essary to a c com modate  d evi c es tha t dono t  pr oduce clean  sig nals.
Bea ring i n  mind t h e probl ems an d d efi cien c ie softh e  pr i or  ar t , i t is the re fo re an  obj e c t of t hepres ent i nvention to p rov idea  di gital  rece iver  t hat h as a r apidre sponse in the p rese nce of cl ean ,noi se  free ,  digit alinp ut sign als and whi ch h a sa slower delayed r es p o ns e in the  prese n ce  o f  noisy s ig nal s.
Y e t  anot hero bj ect of t he pre s en tinventi on  is to  p rov ide  a me t hodof red ucing th e noi s e sensitivityo f a receiverb yv a ry i ng t hedelay of th e re c eive r ac c or din g  to t he no is e  i n  the input signal.St ill ot her o bjects and ad vantages o f t he inven tion wi l l in part be o bviou s and will in partbe ap parent f rom the s p e cificati on.  Anum ber o freferences sh o w  dev el oping s tat ions wh ich  ar e m ova bl e into po sition w it hre sp ect  to a n  image m em ber  a s p art o f  the o perat ionof  t h e m achine. Fo r exam pl e,  U.S . P at . No.  4,9 2 8,1 46 show s apparat usi n wh ic hfour li nearly arrang ed  developme nt  st ations a re seque ntially moved to a sing l e devel opm ent p osit ion to ap ply  diffe ren t  color  toner  to f ou r c o n secut i v eele ct rostatic i m a ges . U.S .Pat.  No. 4, 622,916 shows four ton er stations o n a  rot a r ycar r ia g e w hi c h r o t ates the statio ns through  a si ngle devel o pme nt  positi on to a lso a p ply dif ferent co lor toner sto f o u r c onsecutive  images.  U.S. Pat .  No.4 ,8 01,96 6 i s typi ca l o f a l arge n u mbe r ofrefere nc es sho wingto ning sta tions that are movablein and  outoftheir own  un i que  develope r po sition toapp lythe c orr e ct co lort on ert o the  ima g e being t o ne d.U . S.  Pat. No. 4 , 8 9 1,6 72 sh ows system  inwhich one of a gr o up of color st atio n s  is  mo v ed i nt o a single ton ing  p o s ition fo ra series of  reprodu ct i ons a nd the n is r eplaced o nd emandfrom  astorage p osi ti o n by an ot he r  tonin g st at ion of  diffe r entc o lor for anotherserie s of re p rod uctio ns .
In mo s t of  these app aratus, a d rum ph otoc onduc tor ispe rmanen tly  f ixed in th e  apparatu s asis thesu ppor tin g stru ctur e for e achde vel opment un i t .W it hs uch  str uctur e,  cri tical pos i tioningofe ach dev el opm e n t unit wi t h  respect t o t he ph o t oconductiv e  dru m  c a n bemanage d by p recisem anu fa cturing  an d assemblyof thosep art sandtheir su pp orti ng  st ru cture. It would  be desi rable to r emovethe need for su ch  precision.U.S.Pa t . Nos.4 , 9
 as_the noise_at the transitions between_each bit_falsely_switches the_receiver.
The_conventional solution to_this problem is_simply to slow down_the receiver sufficiently_that_it does not respond the rapid voltage swings of noisy and poorly switched digital_signals._This type_of_receiver_design makes the devices that_produce clean digital signals pay_the penalty_of slow receiver speed necessary to accommodate devices_that_do not produce_clean signals.
Bearing in mind the problems and deficiencies of_the prior art, it is therefore_an object of_the_present_invention to provide a_digital receiver that has a rapid_response in the presence of clean,_noise free, digital input signals and which_has a slower delayed response in_the presence of noisy signals.
Yet_another object_of the present invention is_to provide a_method of_reducing the noise_sensitivity of a receiver by varying_the delay of_the receiver according to the noise_in_the input signal.
Still_other_objects_and advantages_of the invention_will_in part_be_obvious and will in part be_apparent_from the specification. A number of references_show developing stations which_are_movable into position with_respect to an image member_as part of the operation of_the machine._For example,_U.S. Pat. No. 4,928,146 shows apparatus in which four linearly arranged_development stations are sequentially moved to_a single development position_to apply_different_color toner to_four_consecutive electrostatic_images. U.S. Pat. No. 4,622,916 shows four_toner stations_on a rotary carriage which rotates_the stations through a_single_development position to also apply different_color toners to four consecutive images._U.S. Pat. No. 4,801,966 is_typical_of_a large number of references_showing toning stations that are movable_in and out_of their own unique developer position to_apply_the correct color toner to the_image_being toned. U.S. Pat. No. 4,891,672_shows_system_in which one of a_group of color stations is moved_into a single toning position for a series of_reproductions and then_is replaced on demand from_a_storage_position by another toning station of different color for another_series of_reproductions.
In most of_these apparatus, a drum photoconductor is permanently fixed in the_apparatus as is the supporting structure for_each development unit. With such structure, critical positioning of each development_unit with respect to the photoconductive drum can_be managed by precise manufacturing and assembly_of those parts and_their_supporting structure. It would be desirable to_remove_the_need_for such precision.
U.S._Pat. Nos. 4,9