Patent ID: 8534795
Filing Date: 2013-09-17
Classification: B41J

Abstract:
1. An image recording apparatus comprising: a sheet conveying unit that conveys a recoding sheet along a sheet conveying path; an ink ejection head which has a nozzle ejecting ink onto the recording sheet being conveyed and an ink ejection surface in which an ejection port of the nozzle is formed; a pretreatment liquid ejection head which is arranged on the upstream side of the ink ejection head in a conveying direction of the recording sheet, and ejects a pretreatment liquid containing a component capable of aggregating or precipitating ink components onto the recording sheet being conveyed; a purge unit that discharges ink from the nozzle; a wiping unit that has a wiper wiping the ink ejection surface; a paper jam detection unit that detects a position in the sheet conveying path when the recording sheet is jammed; and a maintenance control unit that is configured to control the purge unit and the wiping unit, wherein, when the paper jam detection unit detects a paper jam on the downstream side from the pretreatment liquid ejection head in the conveying direction, the maintenance control unit performs a first maintenance operation, in which the purge unit discharges ink from the ink ejection head, and then the wiping unit wipes the ink ejection surface with the wiper, once or more, and in the first maintenance operation, compared to a second maintenance operation capable of recovering the meniscus of the nozzle and removing ink attached to the ink ejection surface, the maintenance control unit performs control such that a discharge amount of ink to be discharged from the ink ejection head by the purge unit decreases or the wiping speed when the ink ejection surface is wiped by the wiping unit decreases.