Semiconductor device, ink tank provided with such semiconductor device, ink jet cartridge, ink jet recording apparatus, method for manufacturing such semiconductor device, and communication system, method for controlling pressure, memory element, security system of ink jet recording apparatus

A communication system using solid type semiconductor device comprising:

• a liquid container having said solid type semiconductor device arranged therefor;
• an oscillation circuit provided with conductor coil, information acquiring means for acquiring information inside said container, reception means for receiving signals from the outside, and information communicating means for communicating information to the outside formed for said solid type semiconductor device;
• an external resonance circuit arranged outside said solid type semiconductor device to generate electric power by magnetic induction between said circuit and the oscillation circuit of said solid type semiconductor device;
• and
• an external communication means for communicating bidirectionally by said reception means and said information communicating means of said solid type semiconductor device.

A method for manufacturing a solid type semiconductor device, comprising the following steps of:

• forming a protection film A on the entire surface of Si;
• forming opening on a part of said protection film A;
• removing only the upper part of said Si;
• forming a protection film B on the inner and outer surfaces of the work formed by said Si and protection film A;
• making the hollow portion in airtightly closed condition by use of conductive material;
• and
• forming conductor coil made by said conductive material.

A method for manufacturing a solid type semiconductor device, comprising the following steps of:

• forming a protection film A on the entire surface of Si;
• forming opening on a part of said protection film A;
• removing only the upper part of said Si;
• forming a protection film B on the inner and outer surfaces of the work formed by said Si and protection film A;
• making the hollow portion in airtightly closed condition by use of conductive material and forming conductive film on the entire surface thereof;
• and
• patterning said conductive film to from conductor coil made by conductive material.

A security system of a recording apparatus having a recording head cartridge detachably mounted thereon, wherein

• said recording head cartridge comprises a recognized data holding portion for holding as recognized data the personal information recognized by recognizing portion for recognizing personal information;
• a key code A holding portion for holding key code A;
• an encode converting portion for encoding said recognized data by said key code A;
• an encoded data holding portion for holding the encoded data by said encode data converting portion;
• an information input and output portion for receiving said key code A from said recording apparatus side, and for transmitting said recognized data and said encoded data to said recording apparatus;
• an energy converting portion for converting electromotive force supplied from said recording apparatus side in non-contact into electric power for actuating each of structural portions, and
• said recording apparatus comprises an energy supplying portion for supplying electromotive force to said energy converting portion in non-contact;
• a key code K setting portion for the owner of recording apparatus to set the key code K;
• a key code A holding portion and a key code B holding portion for holding key code A and key code B created from said key code K, respectively;
• an information input and output portion for transmitting said key code A to said solid type semiconductor device, and for receiving said recognized data and said encoded data from said solid type semiconductor device side;
• a recognized data holding portion for holding said recognized data;
• an encoded data holding portion for holding said encoded data;
• a decode converting portion for decoding said encoded data by said key code B;
• a decoded data holding portion for holding decoded data by said decode converting portion;
• a data comparing portion for comparing said recognized data and said decoded data for reference;
• and discrimination processing portion for admitting the use of recording apparatus or making the use thereof impossible in accordance with the result of comparison by said data comparing portion.