Image forming apparatus including cartridge having first storage chamber, cartridge attachment portion having second storage chamber, and recording portion

An image forming system comprising:

• a cartridge comprising:
• a first storage chamber configured to store a liquid;
• a first air communication portion allowing the first storage chamber to be communicated with an atmosphere;
• a supply portion configured to supply the liquid stored in the first storage chamber;
• and
• a first semipermeable membrane blocking the first air communication portion against a flow of the liquid;
• and
• an image forming apparatus comprising:
• a cartridge attachment portion comprising:
• a connecting portion connectable to the supply portion;
• and
• a tank comprising:
• a liquid flow-in port allowing the liquid stored in the first storage chamber and flowing through the connecting portion connected to the supply portion to pass through the liquid flow-in port;
• a second storage chamber configured to store the liquid passed through the liquid flow-in port;
• a second air communication portion allowing the second storage chamber to be communicated with the atmosphere;
• a second semipermeable membrane blocking the second air communication portion against the flow out of the liquid;
• and
• a liquid flow-out port disposed at a position below the liquid flow-in port and allowing the liquid stored in the storage chamber to flow out of the second storage chamber;
• and
• a recording portion comprising a nozzle through which the liquid flowed out of the second storage chamber through the liquid flow-out port is ejected.