Narrative:

Aircraft X came off of an IFR approach climbing out runway heading climbing to 3000 feet. I issued him his new IFR clearance to eastbound; issued him his new code; and turned him on course. Then I went to the printer to pull and disseminate strips. While disseminating the strips to the high radar position I heard the conflict alert going off. When I returned to my scope I saw aircraft Y in close proximity to aircraft X. At this time I had no idea who the aircraft Y was or where he came from. Before I could issue a safety alert to aircraft X the track on aircraft Y was already observed turning away from aircraft X.in the scramble to establish separation between the two aircraft and to ascertain who aircraft Y was and where he came from he was not properly radar identified. Although his identity was established he was never told 'radar contact'. No recommendations at this point.

Google
 

Original NASA ASRS Text

Title: ACT TRACON Controller reported leaving their position to attend to the flight strip printer and heard the conflict alert sound at his position. When they returned; they observed one of their aircraft in close proximity to an unidentified target.

Narrative: Aircraft X came off of an IFR approach climbing out runway heading climbing to 3000 feet. I issued him his new IFR clearance to eastbound; issued him his new code; and turned him on course. Then I went to the printer to pull and disseminate strips. While disseminating the strips to the high radar position I heard the conflict alert going off. When I returned to my scope I saw Aircraft Y in close proximity to Aircraft X. At this time I had no idea who the Aircraft Y was or where he came from. Before I could issue a safety alert to Aircraft X the track on Aircraft Y was already observed turning away from Aircraft X.In the scramble to establish separation between the two aircraft and to ascertain who Aircraft Y was and where he came from he was not properly radar identified. Although his identity was established he was never told 'radar contact'. No recommendations at this point.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.