INK CARTRIDGE AND IMAGE FORMATION DEVICE

To provide an ink cartridge which is easily attached and can inhibit mixing of air bubbles during attachment and manufacturing.SOLUTION: An ink cartridge has a first ink storage part 30 for relaying and a second ink storage part 40 for replenishing. The first ink storage part has an exposed part which is placed at the outer side relative to a device body when attached to an image formation device and the second ink storage part may be installed on an upper surface of the exposed part. The first ink storage part has a first connection port to be connected with a replenishing connection port. The second ink storage part has the replenishing connection port and has a cover member forming the replenishing connection port. The replenishing connection port or the first connection port is provided with a pipe member. Each tip of the pipe member is formed in a sharp shape and holes are provided at the tips or positions near the tips. The cover member comprises a first cover member and a second cover member. At least one of the first cover member and the second cover member is provided with claw shaped parts and the other is provided with step shaped parts. Each claw shaped part is fitted in the step shaped part.SELECTED DRAWING: Figure 2 【課題】取り付けがしやすく、取り付け時や作製時に気泡の混入を抑制できるインクカートリッジを提供する。【解決手段】中継用の第１のインク収容部３０と継足し用の第２のインク収容部４０を有する。第１のインク収容部は、画像形成装置に装着されたときに装置本体よりも外に出る露出部を有し、露出部の上面に第２のインク収容部を設置可能である。第１のインク収容部は、継足し接続口と接続する第１の接続口を有する。第２のインク収容部は継足し接続口を有し、継足し接続口を構成するカバー部材を有する。継足し接続口又は第１接続口は管部材が設けられている。管部材は先端が鋭利形状となっており、先端乃至先端近傍に穴が設けられている。カバー部材は第１のカバー部材と、第２のカバー部材とで構成される。第１のカバー部材又は第２のカバー部材は、どちらか一方に爪形状が設けられ、他方に段差形状が設けられ、爪形状と段差形状が嵌合する。【選択図】図２