Biochip and method for producing the same

A method for producing a biochip comprising the steps of:

• providing a substantially planar base plate;
• supplying, onto the upper surface of said base plate, a plurality of solution samples, each containing a capture used to specifically react with a specimen in order to obtain information on a structure or a function of said specimen;
• and
• supplying a solution containing no capture in accordance with an ink-jet system separately from and in the same location as each of said solution samples,
• wherein one of said solution sample and said solution containing no capture is supplied onto the other one of said solution sample and said solution containing no capture while said other one of said solution sample and said solution containing no capture is in liquid form, has a top portion, and has a circumferential portion, said top portion being positioned higher with respect to said base late than said circumferential portion.