Recording medium detection method and label printer

Details Recording medium detection method and label printer Recording medium detection method and label printer

2008-10-10

2011-10-04

Lepisto, Ryan (Department: 2883)

Incremental printing of symbolic information

Ink jet

Controller

C347S037000, C347S101000, C347S104000, C347S105000, C347S106000

Reexamination Certificate

active

08029083

ABSTRACT:
A recording medium detection method uses transmission and reflection photosensors to correctly detect if a recording medium having labels affixed to a liner is in the transportation path. The label printer1has a reflection photosensor26and a transmission photosensor27disposed to the transportation path at positions separated the distance L0between the labels12c. Labels12con the recording medium12acan always be detected by either or both the reflection photosensor26and the transmission photosensor27. Because the reflection photosensor26is downstream from the transmission photosensor27, a situation in which a black mark12dis at the detection position of the reflection photosensor26and reflection is not detected and only the liner12bis at the detection position of the transmission photosensor27and transmission of the detection beam is detected is avoided. Detecting transmission without detecting reflection of the detection beam therefore only occurs when the recording medium12ais not in the transportation path A.

REFERENCES:
patent: 6172688 (2001-01-01), Iwasaki et al.
patent: 2009/0102878 (2009-04-01), Yamada
patent: 07-097133 (1995-04-01), None
patent: 2000-071548 (2000-03-01), None
patent: 2007-090766 (2007-04-01), None
patent: 2007-106556 (2007-04-01), None
Notice of Allowance issued in Chinese Application No. 200810170069.3 dated Dec. 20, 2010.

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