Patent ID: 8752955
Filing Date: 2014-06-17
Classification: B41J

Abstract:
1. An inkjet printer, comprising: a movable conveyance belt upon which a recording medium is placed and conveyed at a given conveyance speed in a longitudinal, conveyance direction of the belt; a first charging device disposed in contact with the belt while supplied with a first alternating current voltage to create a first electrified portion in the conveyance belt where positive and negative electric charges are arranged alternately with each other in the conveyance direction for electrostatically attracting the recording medium to the belt; and a second charging device disposed adjacent the belt to contact the recording medium conveyed on the belt while supplied with a second alternating current voltage to create a second electrified portion in the recording medium for cancelling an electric field originating from the first electrified portion of the belt, the first electrified portion having a unit length in the conveyance direction equal to or smaller than the conveyance speed divided by a frequency of the first alternating current voltage, and the second electrified portion having a unit length in the conveyance direction greater than the conveyance speed divided by a frequency of the second alternating current voltage.