▁prints ▁with ▁a ▁variety ▁of ▁equipment , ▁phot ographic ▁paper , ▁and ▁chemical s . ▁K od ak ▁created ▁the ▁RA - 4 ▁process ▁for ▁its ▁color ▁negative ▁phot ographic ▁papers . ▁Fu ji , ▁Ag fa , ▁and ▁other ▁present ▁and ▁past ▁phot ographic ▁supply ▁companies ▁also ▁make ▁or ▁have ▁made ▁both ▁papers ▁that ▁are ▁compatible ▁with ▁the ▁K od ak ▁chemical s , ▁and ▁chemical s ▁that ▁are ▁compatible ▁with ▁the ▁K od ak ▁papers . ▁These ▁other ▁companies ▁typically ▁call ▁their ▁equivalent ▁processes ▁by ▁other ▁names , ▁but ▁to ▁most ▁photograph ers , ▁RA - 4 ▁is ▁used ▁as ▁a ▁generic ▁term . ▁ ▁The ▁actual ▁chemical ▁process ▁occurs ▁at ▁ 1 0 0 ▁degrees ▁F , ▁the ▁paper ▁( gl oss y ▁or ▁mat te ) ▁is ▁taken ▁though ▁color ▁developer , ▁then ▁brief ▁was h ▁then ▁via ▁roll er ▁system ▁into ▁ble ach / fix ▁and ▁then , ▁chemical s ▁are ▁was hed ▁out ▁of ▁the ▁paper ▁via ▁water , ▁and ▁since ▁the ▁paper ▁is ▁Res in ▁Co ated , ▁it ▁d ries ▁flat ▁and ▁even . ▁The ▁prints ▁can ▁be ▁processed ▁in ▁phot ol ab , ▁or ▁rot ary ▁tub es ▁or ▁t ray s ▁by ▁the ▁photo ▁h ob by ist ▁in ▁a ▁dark room ▁setting . ▁ ▁Current ▁manufact ur ers ▁of ▁RA - 4 ▁Chem istry ▁include ▁K od ak , ▁Fre est yle , ▁Rol lei , ▁Un icol or ▁and ▁T eten al ▁as ▁of ▁ 2 0 1 7 . ▁