Abstract: An ink jet printer that prints high quality wherein ink has minimum contact with the atmosphere, high volatility and is easy to separate. The ink jet recording heads and the sub tanks are mounted at the side of the Y cursor, and the main tanks are disposed at the side of the printer body. Upon completion of printing or standby for printing, the ink in the sub tanks is recovered to the side of the main tanks, and the ink in the recording heads is recovered to the side of the waste solution tank. After the ink in the sub tanks is recovered to the side of the main tanks, and before the ink in the main tanks is supplied into the sub tanks, the ink in the main tanks is stirred. After the ink in the recording heads is recovered to the waste solution tank, the inside of the recording heads is cleaned with the cleaning solution, and after the cleaning, the air is supplied into the recording heads, and the inside of the recording heads is dried.

Abstract: For the purpose of performing a high quality drafting with an ink that has a minimum contact with atmosphere and having high volatility and its ink ingredient is easy to separate, the ink jet type recording heads 52 and the sub tanks 54 are mounted at the side of the Y cursor 40, and the main tanks 60 are disposed at the side of the printer body. In the condition of completion of drafting or the standby of drafting, the ink in the sub tanks 54 is recovered to the side of the main tanks 60, and the ink in the recording heads 52 is recovered to the side of the waste solution tank 118. After the ink in the sub tanks 54 is recovered to the side of the main tanks 60, and before the ink in the main tanks 60 is supplied into the sub tanks 54, the ink in the main tanks 60 is stirred.

Abstract: An object of this invention is to improve the sharpness of cutting and to prolong the longevity of the blade by increasing the cutting speed with a rotation of the round blade cutter that is more than the normal rotation of 1:1.The base 34 is linked with the drawing head 8 by means of the detachable hook 16 and the hook receiver 32, and when the base 34 moves along the rail 6 with the drawing head 8, the rubber roller 46 rotates with the friction with the paper-mounting plate 2. The rotation of the rubber roller 46 is transmitted to the round blade cutter 40 by means of the speed increasing mechanism, and the round blade cutter 40 rotates at a high speed in the same direction with the rubber roller 46 and moves along the cutter groove 4 to cut the paper 12.