Patent ID: 8335978
Filing Date: 2012-12-18
Classification: B41J

Abstract:
1. A printing apparatus provided with a liquid container including a semiconductor device configured to store data, the printing apparatus comprising: an ordinary data readout unit configured to read out non-encoded ordinary data from the semiconductor device; an encoded data readout unit configured to give a requirement for an encoding operation of the ordinary data to the semiconductor device and read out encoded data obtained by the encoding operation of the ordinary data; an encoding decoding module configured to make the ordinary data subjected to encoding, which is equivalent to the encoding operation, and thereby generate a comparative encoded data; and a verification unit configured to compare the comparative encoded data with the encoded data and verify a communication status between the semiconductor device and the printing apparatus; wherein the encoded data is subjected to a reversible second encoding operation subsequent to an irreversible first encoding operation, and the encoding decoding module decodes the second encoding operation of the encoded data to obtain encoded data of only the first encoding operation, while performing the encoding operation of the ordinary data.