Printer having duplex printing function

摘要

Upon a misfeeding of any of second and subsequent sheets in paper feeding by a paper feeding unit during duplex printing, a controller drives the paper feeding unit to perform a paper feeding retry at one or more of paper feeding timings in a paper feeding schedule for duplex printing. The paper feeding schedule for duplex printing specifies the paper feeding timings by the paper feeding unit and paper refeeding timings by a paper refeeding unit for a case other than the misfeeding of any of the second and subsequent sheets in the paper feeding by the paper feeding unit such that the sheet refed from the paper refeeding unit and the sheet fed from the paper feeding unit are alternately conveyed to a printing unit.

主权项

1. A printer comprising:
a printing unit configured to perform printing while conveying a sheet; a paper feeding unit configured to feed the sheet to the printing unit; a circulation conveying unit including a route and configured to convey the sheet sent out from the printing unit along the route, the route including a switchback route for turning over the sheet; a paper refeeding unit configured to refeed the sheet turned over in the switchback route to the printing unit; and a controller configured to control a paper feeding by the paper feeding unit and a paper refeeding by the paper refeeding unit based on a paper feeding schedule for duplex printing which specifies paper feeding timings by the paper feeding unit and paper refeeding timings by the paper refeeding unit for a case other than a misfeeding of any of second and subsequent sheets in the paper feeding by the paper feeding unit such that the sheet refed from the paper refeeding unit and the sheet fed from the paper feeding unit are alternately conveyed to the printing unit, wherein, upon the misfeeding of any of the second and subsequent sheets in the paper feeding by the paper feeding unit during the duplex printing, the controller drives the paper feeding unit to perform a paper feeding retry at one or more of the paper feeding timings in the paper feeding schedule for duplex printing.