JIRA Server
You can print all the issues in given sprint from Plan view:
You can also print items from selected column on Work view.
You may also print selected issues by using right-click context menu:
JIRA Cloud
Printing from JIRA Agile is carried out by Print Issue(s) option in Agile top menu. This option works only on two JIRA Agile views - Plan and Work. On Plan view you can choose which Sprint will be printed (only active and future sprints that contain at least one issue are shown). On Work view every column can be printed, assuming that Sprint is started and chosen column has at least one issue.