摘要:
A closed ink replenishment system for replenishing the supply of ink in negative pressure spring-bag reservoirs in a printer/plotter. A tube runs between each cartridge reservoir and an auxiliary reservoir mounted to the printer/plotter frame to form the closed ink system. As ink is depleted from the spring-bag reservoir during printing operation, the negative pressure in the cartridge increases, drawing ink through the tube from the auxiliary reservoir into the cartridge until the negative pressure decreases to an equilibrium point. As a result, the volume of ink within the spring-bag reservoir remains substantially constant so long as there is ink remaining within the auxiliary reservoir. This maintains the print quality. The auxiliary reservoir is a flat bag mounted on a spring-biased platform, which acts as a height regulating system. As ink is depleted from the auxiliary bag, the height of the platform and bag increases to maintain a constant pressure and elevation head at the spring-bag reservoir.
摘要:
A closed ink replenishment system for replenishing the supply of ink in negative pressure spring-bag reservoirs in a printer/plotter. A tube runs between each cartridge reservoir and an auxiliary reservoir mounted to the printer/plotter frame to form the closed ink system. As ink is depleted from the spring-bag reservoir during printing operation, the negative pressure in the cartridge increases, drawing ink through the tube from the auxiliary reservoir into the cartridge until the negative pressure decreases to an equilibrium point. As a result, the volume of ink within the spring-bag reservoir remains substantially constant so long as there is ink remaining within the auxiliary reservoir. This maintains the print quality. The auxiliary reservoir is a flat bag mounted on a spring-biased platform, which acts as a height regulating system. As ink is depleted from the auxiliary bag, the height of the platform and bag increases to maintain a constant pressure and elevation head at the spring-bag reservoir.
摘要:
An ink-jet swath printer employing a cartridge with a spring bag primary reservoir and an auxiliary ink reservoir interconnected via a tube to form a closed ink replenishment system. The primary reservoir creates a negative pressure which draws ink from the auxiliary reservoir as ink is expelled from the cartridge printhead during printing operations. The auxiliary reservoir can either be mounted on the cartridge carriage or on the printer body. The auxiliary reservoir is a large capacity collapsible bag mounted below the level of the printhead to establish an ink pressure head at the primary reservoir connection which is not so large as to destroy or diminish the negative pressure and allow ink to drool from the printhead, yet is sufficient to permit replenishment of the primary reservoir to avoid printhead ink starvation.
摘要:
A method of assembling a collapsible ink reservoir for a liquid ink printer cartridge comprising the steps of attaching a first sidewall to a frame member along a sealable junction to form an open assembly; assembling a pressure regulator; inserting the pressure regulator of said assembly step into the open assembly of said attaching step; and affixing a second sidewall to the open assembly of said attaching step to form an enclosed assembly.
摘要:
A system for monitoring ink volume in an ink reservoir carried on-board the print head carriage and replenishing the ink as needed to maintain an adequate volume of ink in the print head carriage ink reservoir, such replenishment coming from an off-board ink supply not positioned on the print head carriage.
摘要:
A method for ink-jet printing including providing a collapsible ink reservoir structure to facilitate assembly of a replaceable or refillable printer ink cartridge, the cartridge being formed of a relatively rigid frame (20) and flexible membranes (22, 24) forming an ink reservoir having side walls which collapse to a substantially flat shape to minimize the amount of ink remaining in the reservoir structure after computer generated printing has depleted the ink from the cartridge. The ink reservoir structure is a separate unit which is assembled and mounted in an outer housing (10) to form an ink cartridge and preferably contains an ink pressure regulator (30) which maintains a negative pressure therein.
摘要:
A collapsible ink reservoir structure to facilitate assembly of a replaceable or refillable printer ink cartridge is comprised of a relatively rigid inner frame and flexible membranes forming an ink reservoir having side walls which collapse to a substantially flat shape to minimize the amount of ink remaining in the reservoir structure after computer generated printing has depleted the ink from the cartridge. The reservoir structure is a separate unit from the ink discharge aperture device which is assembled and mounted in an outer housing and includes the inner frame and ink bags formed of films to form the cartridge assembly. Multiple reservoirs can be formed within the structure to permit the use of different colorants in each reservoir. The structure preferably contains an ink pressure regulator within each reservoir to maintain a negative pressure therein.
摘要:
A collapsible ink reservoir structure (25) to facilitate assembly of a replaceable or refillable printer ink cartridge is comprised of a relatively rigid frame (20) and flexible membranes (22, 24) forming an ink reservoir having side walls which collapse to a substantially flat shape to minimize the amount of ink remaining in the reservoir structure after computer generated printing has depleted the ink from the cartridge. The structure (25) is a separate unit which is assembled and mounted in an outer housing (10) to form an ink cartridge. The structure preferably contains an ink pressure regulator (30) which maintains a negative pressure therein.
摘要:
In a computer-driven ink-jet printer, a carriage-borne ink reservoir system adjacent a print head, having a housing and a movable wall within and in sealing contact with the housing, the movable wall being observable and forming a portion of a variable volume ink chamber within the housing, the position of the movable wall being related to the volume of ink contained in the carriage-borne ink reservoir.
摘要:
An inkjet printhead is mounted on a cartridge which has an outer casing member, an inner collapsible reservoir formed by non-elastic flexible walls, and an internal spring means inside the reservoir for creating negative pressure in the collapsible reservoir during the filling and storage of ink in the collapsible reservoir as well as during the dispensing of ink from the collapsible reservoir to the printhead.