Patent ID: 8029083
Filing Date: 2011-10-04
Classification: B41J

Abstract:
1. A label printer comprising: a print head; a transportation path for conveying a recording medium in a recording medium transportation direction, said recording medium having peelable labels affixed at a regular interval on a surface of a continuous liner; a reflection photosensor for detecting reflection of a detection beam emitted from one side of the transportation path to a same side; a transmission photosensor for detecting transmission of a detection beam emitted to the transportation path from one side to another side; and a decision unit for determining a presence of the recording medium in the transportation path based on an output from the reflection photosensor and transmission photosensor; wherein the print head, the reflection photosensor, and the transmission photosensor are disposed in order from a downstream side to an upstream side in the recording medium transportation direction, the reflection photosensor being offset from the transmission photosensor in the downstream side in the recording medium transportation direction; and wherein a first gap extending in the recording medium transportation direction between the detection position of the reflection photosensor and the detection position of the transmission photosensor is in a range greater than or equal to a length of a second gap between the peelable labels on the recording medium and less than or equal to a length of the peelable labels in the recording medium transportation direction.