초록 ▼

An ink container includes a cylindrical member having a closed end and an opposite open end; and a flexible member covering the open end of the cylindrical member to define an ink containing portion. The flexible member has a bottom portion and a bent portion that is movable along an internal surfac

An ink container includes a cylindrical member having a closed end and an opposite open end; and a flexible member covering the open end of the cylindrical member to define an ink containing portion. The flexible member has a bottom portion and a bent portion that is movable along an internal surface of the cylindrical member with consumption of the ink therein, wherein the bottom portion is less easily deformable than the bent portion and movement of the bent portion is irreversible.

대표청구항 ▼

An ink container comprising: a cylindrical member having a closed end, an opposite open end and an internal surface, said cylindrical member further having an ink supply port for allowing ink to be consumed; and an elastic member, having cross-section of a size substantially equal to a cross-section

An ink container comprising: a cylindrical member having a closed end, an opposite open end and an internal surface, said cylindrical member further having an ink supply port for allowing ink to be consumed; and an elastic member, having cross-section of a size substantially equal to a cross-section of said cylindrical member, and including a side portion extending along the internal surface of said cylindrical member and a bottom portion opposed to the closed end of said cylindrical member, wherein an open end of said elastic member is fixed to said cylindrical member to cover the open end of said cylindrical member to define an ink containing portion; wherein the side portion of said elastic member has a bent-back portion, which, when the ink containing portion is full, is effective to position the bottom portion of said elastic member adjacent the open end of said cylindrical member, and is bent back along the internal surface of said cylindrical member, and the bent-back portion and the bottom portion, which is less easily deformable than the bent-back portion, are movable along the internal surface in response to an internal pressure reduction caused by consumption of ink through said ink supply port, wherein the bent-back portion and the bottom portion maintain a substantially constant negative pressure in said ink containing portion regardless of a position of the bottom portion.