 the delivery tray.
The developing portion 4 provided in each process cartridge 1 has a developer container for containing the developer therein, agitating means for agitating the contained developer and supplying it to a developing sleeve, and a developing blade for regulating the layer thickness of the developer supplied onto the developing sleeve, and the developer on the developing sleeve is supplied onto the photosensitive drum 2 opposed to the developing sleeve with a minute gap therebetween. The developer necessary for image formation fills each developer container in advance, and as the amount of developer (filling level) in the developer container is reduced by development, the developing portion 4 may be automatically replenished with the developer from the developer replenishing portion 6.
FIG. 11 of the accompanying drawings is a detailed cross-sectional view of the developer replenishing portion 6 shown in FIG. 10, and FIG. 12 of the accompanying drawings is a right side view thereof. The developer replenishing portion 6 has an elongate main body 30 serving also as a container for containing the developer T therein, and agitating means 31 having a plurality of agitating vanes is rotatably supported in the substantially central portion of the main body 30, and a replenishing screw 32 is rotatably supported in the lower portion of the main body 30. Further, a developer discharge port 33 is provided in the bottom of the main body 30 so that when the developer replenishing portion 6 is mounted on the main body A of the apparatus, the developer discharge port 33 may communicate with a supply port opening to the upper portion of the developing portion 4 which is indicated by the double-dotted line.
The replenishing screw 32 is opposite in the helix direction of the screw on the left side and right side of FIG. 11, and when the replenishing screw 32 is clockwisely rotated, the developer T is moved from left to right toward the developer discharge port 33 and is discharged therethrough.
When the developer replenishing portion 6 is mounted on the main body A of the apparatus, the end portions of the rotary shaft 34 of the agitating means 31 and the rotary shaft 35 of the replenishing screw 32 are detachably connected to driving shafts 41 and 42, respectively, in a driving portion 40 provided on the main body A side of the apparatus through couplings. In the case of connection, two guide pins 43 and 44 protruding from the driving portion 40 side are inserted into two guide cylinders protruding in parallel to each other from the end portion of the main body 30, whereby accurate positioning is accomplished.
The
the delivery tray. 
 The developing portion 4 provided in each procedure magazine 1 has a developer container for containing the developer therein, crusade mean for agitating the contained developer and supplying it to a develop sleeve, and a developing blade for regulate the layer thickness of the developer supplied onto the develop sleeve, and the developer on the developing sleeve is issue onto the light-sensitive drum 2 opposed to the develop sleeve with a minute gap therebetween. The developer necessary for persona formation fills each developer container in advance, and as the sum of developer (filling level) in the developer container is reduced by growth, the developing portion 4 may be automatically replenished with the developer from the developer replenishing helping 6. 
 FIG. 11 of the accompanying drawings is a detailed cross - sectional view of the developer replenishing portion 6 shown in FIG. 10, and FIG. 12 of the accompanying drawings is a right side view thereof. The developer replenishing portion 6 has an elongate main torso 30 serving also as a container for control the developer T therein, and agitating mean 31 having a plurality of agitating vanes is rotatably supported in the substantially central helping of the main body 30, and a replenishing screw 32 is rotatably supported in the lower dowry of the main body 30. Further, a developer discharge larboard 33 is provided in the buttocks of the main body 30 so that when the developer replenishing portion 6 is mounted on the chief body A of the apparatus, the developer discharge larboard 33 may communicate with a supply port opening to the upper share of the developing dowry 4 which is indicated by the double - dot line. 
 The replenish screw 32 is opposite in the helix direction of the fuck on the left side and right side of FIG. 11, and when the replenishing fuck 32 is clockwisely rotated, the developer T is moved from left to right toward the developer discharge port 33 and is discharged therethrough. 
 When the developer replenishing portion 6 is mount on the main body angstrom of the apparatus, the end portions of the rotary shaft 34 of the agitating means 31 and the rotary diaphysis 35 of the replenishing screw 32 are detachably connected to driving shafts 41 and 42, respectively, in a driving portion 40 provided on the chief torso A side of the apparatus through couplings. In the case of connection, two guide pins 43 and 44 stick out from the driving portion 40 side are slip in into two guide cylinders protruding in parallel to each other from the conclusion portion of the main body 30, whereby accurate placement is accomplished. 
 The
 thf delivery tray.
The develuping portion 4 krivided in eadh procers cartridge 1 has a developec cobtaintg for containing the aeveloper therein, agiuating means for efitatinn the gontannxd developer anc supplyinc it to a devenooiug sleeve, and a developing blade for regulayijg the layer trickmqss kf the developer supplied onto the develoking sleeve, and thr developer on the developlng dleeve is supplied onto the pyotofwnsitive druo 2 opposed to the devemoping sleeve with a minute gap therzbetween. Thg seggloper neceswary sor image fovkation fills rach developer coitaiber in advance, and as the amount of devgloper (filniug level) in the develipwr cottaiter kw rddudev bg devepopjent, the dsveloping pirtion 4 may be autokaepvally replenjshed rieh the developer from the developer repnenjshing portion 6.
FIG. 11 of rhe accompanying drawlngs is a detailed cross-sectional view of the developer re[leniafiny portkin 6 shown in FIG. 10, and FIG. 12 of the accompanying qdaeikgs is a right slde view thereof. Tne drdeloper replevishiny pkrtion 6 has an elojgate mwin bidy 30 servyng slso as a container for conraining the bevwloper T therein, aud agitating meams 31 hsving a plurality of agntatinf vanes is gotatably rupported in the sunstdntially central portion os the maii bodv 30, and a repkenishyng screw 32 is rotatably supported ln thg lowes portion lf the main body 30. Further, a devxkoper dischatge pogt 33 is prjvidec in the bottjm of the main body 30 fo thxt when thv developxr replenishyng portion 6 hd mounted on the maig boey A of the xpparatus, the ceveloper discharge port 33 may communigate djth a supply poxu okebing to the upler powtpon os the develophng oorgoon 4 dhich is inbizatec by the double-dotteg lihe.
The replenishing sgrew 32 is ipposite in the helix direction of the dcrew on the kefj side and right side of FIG. 11, ahd when tje veplenishing fcreq 32 is clockwnsely rotated, the developer T is moved fcom left to right towatd the developer disckavge port 33 anv is dyscharged therethrough.
When thw developer replekishing portion 6 is mohnted mn thf main body A of the apparatus, the end portions of the rotary shaft 34 of tye agivaeing means 31 and the gotcry shaft 35 of vhe replenishing xcrew 32 are detachably connected to drivhny shafts 41 and 42, respectively, im x driving porjion 40 provided on the main body A xide of the apparatus through cpuplings. In the case of gonnectiob, two guide pinr 43 and 44 protruding from che druving pirtiln 40 side are knsrrbed into tao gnidz cylinders protruding in paralleo to eqcj other from the end portiok uf thg main bjdy 30, whereby acchrats posijioning is accpmplished.
The
the delivery tray. The developing portion 4 each cartridge 1 a developer container agitating for agitating the developer and supplying to a developing sleeve, and a blade for regulating the layer thickness of the developer supplied onto the developing and the developer on the developing sleeve is supplied onto the photosensitive drum opposed the sleeve a minute gap therebetween. The developer necessary for image formation fills each developer container in advance, as the amount of developer (filling level) in developer container is reduced development, the developing portion 4 be replenished with developer the replenishing portion 6. 11 of the accompanying drawings is a detailed cross-sectional view of the developer replenishing portion 6 shown FIG. 10, 12 of accompanying is right side view developer replenishing portion 6 has an 30 serving also as a container for containing developer T and agitating means 31 having a of agitating vanes is rotatably supported in the central portion of the main body 30, and a replenishing screw 32 is rotatably supported lower portion of the body 30. Further, developer port is in the of the main body 30 so that when the developer replenishing 6 is mounted on the main body A of the developer port 33 may with a supply port to upper portion of the 4 is double-dotted The screw 32 is opposite the helix direction of the on the left side 11, and when the replenishing screw 32 is rotated, the developer T is moved from to right toward the developer discharge port 33 and is discharged therethrough. the developer 6 is mounted on the main body A the apparatus, the end of the rotary shaft 34 of the agitating means and rotary shaft of the replenishing 32 are detachably to driving shafts 42, respectively, a portion the main body A side of apparatus couplings. In the case of two 43 and 44 protruding from the driving portion 40 side are inserted into two guide in parallel to each from end portion of the main body 30, whereby accurate positioning is accomplished.
 the delivery tray.
The developIng portion 4 ProviDed In eAcH proCess Cartridge 1 has a dEVeloPer container for containIng thE dEVeloPEr ThereIn, agitaTInG MEanS fOr AgiTaTInG the cOntAined deVeloper and SupPlYing it to a devELoPing sleeve, And A developing bLadE for reGuLatINg the LayEr thiCkness OF the deVeloper suPpLIed ontO The deveLOPiNg slEeve, and the developER oN The developing sLeeve iS sUPpLIEd oNto The photoseNsItive DRum 2 oppoSEd TO THe dEVeloping sleevE with a minutE Gap TherebEtWeeN. the devElopeR nECesSary for imagE forMation filLs each DEvelopeR ContainEr in adVanCe, aNd as THe AmOunT oF DevELoPer (FIllIng level) In ThE deveLopeR CONTainEr iS redUced bY development, tHe dEvelOPinG portIon 4 maY be aUtOmatiCally rEplenIsHed with the develOper From the deVelOpEr rEpLenisHIng porTioN 6.
FIg. 11 of the aCcompanYIng DrAWINgS is a detailed cross-sEcTIOnAl view of The devELoPeR ReplenisHiNg pOrtiON 6 Shown In FIg. 10, AnD FIG. 12 of thE accomPAnYiNg drawiNgS is a riGhT siDe vIew thEReof. the devEloper rePleniSHing portion 6 has AN elongate main BOdY 30 SErVIng aLso As a containeR for COntaIninG ThE deVElopeR T theReIN, aND agitating means 31 haviNg A pluraLity oF agitating vanEs is rotataBLY SupporteD in tHE sUBstantially cenTral pOrtion of thE Main body 30, And a rEplenishIng screw 32 iS ROtatably SupPorTed In tHE LoWer portion of tHE Main BoDy 30. FurthEr, a DevelopEr dIscHarGe pOrT 33 is providEd in the bOtToM oF tHe mAin boDY 30 so that wHeN thE dEveLoper REpleniShing PortIoN 6 iS MouNted on tHE mAIN bodY A Of The aPpaRaTus, thE devELopEr dischArge port 33 mAy cOMmunIcAtE with a sUpply port openInG to the uppeR pOrtIon of tHE DevelopiNg portion 4 which is indicatED by the dOubLe-dotTed lIne.
The repLenIshing ScrEW 32 is oppOsite iN the hElIx dIREctioN OF tHe sCrEw on the lefT SIde And riGhT sidE of FIG. 11, aNd when the replenishINg sCrew 32 is clockwiSelY rotATEd, The DEvELopEr t Is mOVEd from left to rigHt toward thE dEVeLoper dischARge PoRt 33 and is DischarGed thERethrouGh.
When the Developer RePlenISHinG portion 6 is Mounted oN the main bODy A of THe ApparAtuS, the enD pOrtIons oF the roTAry Shaft 34 Of the aGiTating Means 31 AnD the rotaRy shaft 35 of the replenishinG screw 32 Are deTacHably connEctED to Driving shAfts 41 And 42, respectIveLy, iN a driVinG PortiOn 40 prOViDed ON the mAin bODy A side of THe AppARAtUs through coUPLIngS. In thE caSE of conNectIon, two guide pins 43 anD 44 Protruding from The dRIVinG poRTion 40 SiDe are inserted iNto TwO GUide cyliNdErs protrudiNg in paraLlEL to eaCh otheR from tHe end poRTIoN Of the mAin bOdy 30, Whereby acCurAtE PositioNiNg IS accomPlisHeD.
The
 the delivery tray.
The de veloping p ortio n 4  pr ov ided  ineach process c a rtri dge 1 has a developerconta in e r fo r  c ontai ning th e  d e v elo pe rthe re i n,  agit ati ng mean s for agit ati ng  the contain e ddeveloperand  supplying i t t o a de ve lop i ng sl eev e, an d a de v elopin g blade f or regula t ing the l ay er t hickness of the d e ve l oper suppliedonto t he de v e lop ing  sleeve, a nd  thed evelope r  o n t hed eveloping sle eve is supp l ied  ontoth e p h otosen sitiv ed rum  2 opposedto t he develo ping s l eeve wi t h a min ute ga p t her ebet w ee n.  Th ed eve l op ern ece ssary fo rim age f orma t i o n  fil lseach  deve loper contain erin a d van ce, a nd as  the  a mount  of de velop er  (filling level ) in  the deve lop er  co nt ainer is red uce d b y devel opment, the  d e v e lo ping portion 4 may  b e au tomatica lly re p le ni s hed with  t hedeve l o per f romt he  develop er rep l en is hing po rt ion 6. 
F IG.  11  of t h e ac compan ying dra wings is a detailedc ross-sectiona l  v i e wo f th e d eveloper re plen i shin g po r ti on6  show n inFI G .1 0, and FIG. 12 of t he  accom panyi ng drawings i s a rights i d e view t here o f. The developerreple nishing po r tion 6 h as an  elongat e main bo d y  30 serv ing  al soasa co ntainer for c o n tain in g the d eve loper T  th ere in,  an dagitating  means 3 1ha vi ng  aplura l ity of a gi tat in g v anesi s rota tably  sup po rt e d i n the s u bs t a ntia ll ycent ral  p ortio n of the  main b ody 30, a nda  rep le ni shing s crew 32 is ro ta tably supp or ted  in th e lower po rtion of the main body3 0. Furt her , a d evel oper disc har ge por t 3 3  is pr ovided  in t he  bo t t om of t he  ma in  body 30 s o tha t whe nthedevelop er replenishing po r tio n 6 is mounte d o n th e ma inb od y  Aof the a pparatus, the d eveloper d is c ha rge port 3 3  ma ycommuni cate wi th as upply p ort openi ng to the  u pper p ort ion of the  develop ing porti o n 4 w h ic h isind icated  b y t he do uble-d o tte d lin e.
The  r epleni shing  s crew 32is opposite in the heli x dire ction  of  the scre w o n  th e left si de a nd right s ide  of  FIG.  11 ,  andwhen th e r e pleni shin g  screw 32 is  cl o c kw isely rotat e d ,  th e dev elo p er T i s mo ved from left tor ight toward th e de v e lop erd isch ar ge port 33 and  is  d i s chargedth erethrough. 
When th ed evelo per re plenis hing po r t io n  6 ismoun ted  on the m ain  b o dy A of  t he appara tus,  t he end  porti o ns o f the rotary shaft  34 o f the a g ita tingme ans 31a nd t he rotaryshaft 35 of  the r eple nishi ng scre w32 are  de ta chably con n ected todrivi ng shaf ts  41and  42, r espe c t ively , in  a  dr iving por t i on 40  p r ovi dedon th emain  body A s i de of th e a p paratus  t hro u g h coup l in g s . In the c ase  of c o n nection, t w o gu i de pins43 and  44 pr otrudin g  fr om  the dr ivi n g  portion40 side a r e i ns erte d into t wo  gui de  cy li nders protrudin g in par allel to e ach ot her from the en dportion of t he ma in body 30 , whe reby ac c ura tepos itio nin g is accomplished.
The
 the_delivery tray.
The_developing portion 4 provided_in each_process_cartridge 1_has_a developer container_for containing the_developer therein, agitating means_for agitating the_contained_developer and supplying it to a developing sleeve, and a developing blade for regulating_the_layer thickness_of_the_developer supplied onto the developing_sleeve, and the developer on_the developing_sleeve is supplied onto the photosensitive drum 2_opposed_to the developing_sleeve with a minute gap therebetween. The developer necessary_for image formation fills each developer_container in advance,_and_as_the amount of developer_(filling level) in the developer container_is reduced by development, the developing_portion 4 may be automatically replenished with_the developer from the developer replenishing_portion 6.
FIG. 11 of the_accompanying drawings_is a detailed cross-sectional view_of the developer_replenishing portion_6 shown in_FIG. 10, and FIG. 12 of_the accompanying drawings_is a right side view thereof._The_developer replenishing portion_6_has_an elongate_main body 30_serving_also as_a_container for containing the developer T_therein,_and agitating means 31 having a plurality_of agitating vanes is_rotatably_supported in the substantially_central portion of the main_body 30, and a replenishing screw_32 is_rotatably supported_in the lower portion of the main body 30. Further, a_developer discharge port 33 is provided_in the bottom of_the main_body_30 so that_when_the developer_replenishing portion 6 is mounted on the_main body_A of the apparatus, the developer_discharge port 33 may_communicate_with a supply port opening to_the upper portion of the developing_portion 4 which is indicated_by_the_double-dotted line.
The replenishing screw 32_is opposite in the helix direction_of the screw_on the left side and right side_of_FIG. 11, and when the replenishing_screw_32 is clockwisely rotated, the developer_T_is_moved from left to right_toward the developer discharge port 33_and is discharged therethrough.
When the developer replenishing portion 6_is mounted on_the main body A of_the_apparatus,_the end portions of the rotary shaft 34 of the_agitating means_31 and the_rotary shaft 35 of the replenishing screw 32 are detachably_connected to driving shafts 41 and 42,_respectively, in a driving portion 40 provided on the main body_A side of the apparatus through couplings. In_the case of connection, two guide pins_43 and 44 protruding_from_the driving portion 40 side are inserted_into_two_guide_cylinders protruding in_parallel to each_other from the_end portion_of the main_body 30,_whereby accurate positioning_is_accomplished.
The