公开(公告)号：DE69317569T2

公开(公告)日：1998-09-10

申请号：DE69317569

申请日：1993-12-29

Applicant: BRIDGESTONE CORP

Inventor： YASUNAGA KUNIAKI ,  HASEGAWA HAJIME ,  KIMIJIMA ISAO

IPC: B41J2/175 ,  B65D81/26

公开(公告)号：DE69317569D1

公开(公告)日：1998-04-23

申请号：DE69317569

申请日：1993-12-29

Applicant: BRIDGESTONE CORP

Inventor： YASUNAGA KUNIAKI ,  HASEGAWA HAJIME ,  KIMIJIMA ISAO

IPC: B41J2/175 ,  B65D81/26

公开(公告)号：JPH0615841A

公开(公告)日：1994-01-25

申请号：JP19909492

申请日：1992-07-02

Applicant: BRIDGESTONE CORP

Inventor： YASUNAGA KUNIAKI ,  MOROOKA TAKUYA ,  HASEGAWA HAJIME ,  KIMIJIMA ISAO

IPC: B41J2/175

Abstract: PURPOSE:To alter the density only of the necessary part of the foam material inserted in an ink tank by a simple structure, in the ink tank of a recording apparatus, by forming a projection on the inner wall of the tank and compressing the foam material inserted in the ink tank by the projection to form an area partially high in density. CONSTITUTION:An air port 3 is provided to the lid member 2 of an ink tank main body 1 so that the inner pressure of an ink tank becomes same to atmospheric pressure and an ink discharge port 4 is provided to the bottom part on the side remote from the air port 3 of the main body 1 and a projection 5 is vertically provided to the lid member 2 toward the ink discharge port 4. A urethane foam material 6 is inserted in the ink tank main body 1 and the ink tank main body 1 is closed by the lid member 2. The inserted urethane foam material 6 is partially compressed by the projection 5 and a high density area A is formed to the urethane foam material 6 only in the vicinity of the ink discharge port 4. Therefore, the ink in the ink tank is successively consumed from the low density area B of the foam material 6 to the high density area A thereof and the residual amount of the ink in the ink tank is markedly reduced.

公开(公告)号：JPH0699585A

公开(公告)日：1994-04-12

申请号：JP22477192

申请日：1992-07-31

Applicant: BRIDGESTONE CORP

Inventor： YASUNAGA KUNIAKI ,  KIMIJIMA ISAO

IPC: B41J2/175

Abstract: PURPOSE:To provide an ink holding member, more precisely, a plastic foam member for holding the ink in a recording apparatus. CONSTITUTION:The plastic foam member 10 having fine open cells and received in the ink tank of a recording apparatus is an ink holding foam member characterized in that slits 111-114 are formed in the region to be compressed of the plastic foam member 10 in a compression direction and the plastic foam member is made of urethane foam or melamine/formaldehyde resin foam. By this constitution, the foam member in the ink tank is easily compressed and no voids are present in the ink tank and the capacity of the ink tank is markedly enhanced.

公开(公告)号：JPH0624491A

公开(公告)日：1994-02-01

申请号：JP19909292

申请日：1992-07-02

Applicant: BRIDGESTONE CORP

Inventor： YASUNAGA KUNIAKI ,  HASEGAWA HAJIME ,  KIMIJIMA ISAO

IPC: B65D90/52 ,  B41J2/175

Abstract: PURPOSE:To make urethane foam swollen into close contact with the inner surface of a liquid container having the urethane foam inserted therein by using the urethane foam having swelling properties in relation to the liquid contents. CONSTITUTION:In a container for use in motion containing urethane foam to prevent its liquid contents from movement, the urethane foam having swelling properties in relation to the liquid contents is used. The swelling rate of the urethane foam is 5-60%, preferably 10-40%, and the urethane foam is adapted to be swollen into close contact with the inner surface of the container. In the case of watery liquid contents, a hydrophilic urethan foam is used and, in the polyol for use as the material of ordinary urethane foam, the material having ethylene oxide added thereto at a higher rate than polypropylene oxide is used.