Liquid discharge head, liquid discharge apparatus and method for manufacturing liquid discharge head

A liquid discharge head comprising:

• a first liquid flow path which communicates with a discharge port;
• a second liquid flow path having therein a heat generating body for generating a bubble in liquid by application of heat to the liquid;
• a movable member disposed between said first and second liquid flow paths and having a free end at a downstream side thereof along a liquid flowing direction and adapted to transmit a pressure caused by generation of the bubble in said second liquid flow path to said first liquid flow path by displacing said free end toward said first liquid flow path on the basis of said pressure;
• and
• a sensor for detecting a condition of the liquid located on a wall of said first liquid flow path at least between said discharge port and said free end of said movable member,
• wherein first liquid supplied to said first liquid flow path and second liquid supplied to said second liquid flow path are both discharged from said discharge port by the generation of the bubble in the second liquid, and
• wherein a mixing ratio between the first and second liquids is detected by said sensor, and the driving condition of said heat generating body is changed in accordance with a detection result obtained by said sensor.