... Both blue image and black image mostly 47gsm-55gsm Carbonless Paper :1) All size is available: 76mmx70mm, 70mmx70mm, 57mmx70mm, 57mmx50mm, 44mmx70mm ... , etc. 2) Any core is ok: Cardboard core, plastic core.3) High brightness, good in toughness, deep print image; 4) Neat ... thermal rolls available, able to be Customized by customers requests. 3-ply w/y carbonless paper rolls for sale