Abstract: A print head for an ink jet printer includes at least one ink supply channel and at least one nozzle having a nozzle channel and an inflow opening, and ink can be pressed from the ink supply channel through the inflow opening into the nozzle channel and ejected therefrom, wherein the nozzle is arranged in a stationary manner on a side wall of the ink supply channel and in the ink supply channel a ram is provided, which can be moved back and forth between a reversal point that has a minimal distance from the inflow opening of the nozzle and a reversal point that has a maximal distance from the inflow opening of the nozzle, wherein a first limiting device limits the movement of a ram end face to a movement between the reversal points; and a second external device is provided for applying a negative pressure relative to the ambient air pressure to the ink in the ink supply channel.

Abstract: A print head for an ink jet printer includes at least one ink supply channel and at least one nozzle having a nozzle channel and an inflow opening, and ink can be pressed from the ink supply channel through the inflow opening into the nozzle channel and ejected therefrom, wherein the nozzle is arranged in a stationary manner on a side wall of the ink supply channel and in the ink supply channel a ram is provided, which can be moved back and forth between a reversal point that has a minimal distance from the inflow opening of the nozzle and a reversal point that has a maximal distance from the inflow opening of the nozzle, wherein a first limiting device limits the movement of a ram end face to a movement between the reversal points; and a second external device is provided for applying a negative pressure relative to the ambient air pressure to the ink in the ink supply channel.

Abstract: A print head for an ink jet printer includes at least one ink supply channel and at least one nozzle having a nozzle channel and an inflow opening, and ink can be pressed from the ink supply channel through the inflow opening into the nozzle channel and ejected therefrom, wherein the nozzle is arranged in a stationary manner on a side wall of the ink supply channel and in the ink supply channel a ram is provided, which can be moved back and forth between a reversal point that has a minimal distance from the inflow opening of the nozzle and a reversal point that has a maximal distance from the inflow opening of the nozzle, wherein a first limiting device limits the movement of a ram end face to a movement between the reversal points; and a second external device is provided for applying a negative pressure relative to the ambient air pressure to the ink in the ink supply channel.

Abstract: A print head for an ink jet printer includes at least one ink supply channel and at least one nozzle having a nozzle channel and an inflow opening, and ink can be pressed from the ink supply channel through the inflow opening into the nozzle channel and ejected therefrom, wherein the nozzle is arranged in a stationary manner on a side wall of the ink supply channel and in the ink supply channel a ram is provided, which can be moved back and forth between a reversal point that has a minimal distance from the inflow opening of the nozzle and a reversal point that has a maximal distance from the inflow opening of the nozzle, wherein a first limiting device limits the movement of a ram end face to a movement between the reversal points; and a second external device is provided for applying a negative pressure relative to the ambient air pressure to the ink in the ink supply channel.

Abstract: The invention relates to a print head for an ink jet printer, wherein the print head comprises at least one ink supply channel and at least one nozzle having a nozzle channel and an inflow opening, and ink can be pressed from the ink supply channel through the inflow opening into the nozzle channel and ejected therefrom, wherein the nozzle is arranged in a stationary manner on a side wall of the ink supply channel and in the ink supply channel a ram is provided, which can be moved back and forth between a reversal point (U1) that has a minimal distance from the inflow opening of the nozzle and a reversal point (U2) that has a maximal distance from the inflow opening of the nozzle, wherein first means limit the movement of a ram end face to a movement between the reversal points (U1, U2); and second external means are provided for applying a negative pressure relative to the ambient air pressure to the ink in the ink supply channel.

Abstract: An ink jet printing device (1) for printing multicolored images has an essentially horizontally extending conveyor mechanism (2) for moving items to be printed (3) lying on it in a forward feed direction (4), and a print head arrangement (5) disposed above the conveyor mechanism (2) which is disposed stationary relative to the conveyor mechanism (2) during the printing process. The print head arrangement (5) is made up of several print heads (6) each with several nozzles disposed in a nozzle row (26), and the nozzle rows (22) have a printing range width (24) as measured perpendicular to the forward feed direction (4) which forms a total printing range width (27) of the print head arrangement (5) corresponding to the number of print heads (6). The print head arrangement (5) is disposed so that it can be displaced vertically on a guide (10) and a nozzle rinsing device (14) is provided which can be positioned underneath the print head arrangement (5) as and when necessary.

Abstract: The invention describes an inkjet printer with a printing bed for displacing a print medium in a forward feed direction and a print head carriage disposed above the printing bed for displacing at least one print head unit in a transverse feed direction, a print head unit with at least one print head being provided for every color to be printed, each print head having at least one nozzle row oriented in the forward feed direction of the print medium. The nozzles of the at least one nozzle row of the print head unit are disposed offset from one another by a nozzle distance D by reference to the forward feed direction. Another print head unit is provided, which has nozzles in at least one nozzle row disposed offset from one another by a second nozzle distance d by reference to the forward feed direction of the print medium, the ratio derived from the nozzle distance D and the second nozzle distance d being a rational number and greater than 1.

Abstract: An inkjet printer with a printing bed for displacing a print medium in a forward feed direction and a print head carriage disposed above the printing bed for displacing at least one print head unit in a transverse feed direction, a print head unit with at least one print head being provided for every color to be printed, each print head having at least one nozzle row oriented in the forward feed direction of the print medium. The nozzles of the at least one nozzle row of the print head unit are disposed offset from one another by a nozzle distance D by reference to the forward feed direction. Another print head unit is provided, which has nozzles in at least one nozzle row disposed offset from one another by a second nozzle distance d by reference to the forward feed direction of the print medium, the ratio derived from the nozzle distance D and the second nozzle distance d being a rational number and greater than 1.

Abstract: An inkjet printer may include a print head carriage for displacing at least one print head unit in a transverse feed direction, a print head unit with at least one print head being provided for every color to be printed, each print head having at least one nozzle row oriented in a forward feed direction of a print medium. The nozzles of the at least one nozzle row are disposed offset from one another by a nozzle distance D by reference to the forward feed direction. Another print head unit is provided, which has nozzles in at least one nozzle row disposed offset from one another by a second nozzle distance d by reference to the forward feed direction, the ratio derived from the nozzle distance D and the second nozzle distance d being a rational number and greater than 1.

Abstract: The invention relates to an ink jet printing device (1) for printing multicolored images, with an essentially horizontally extending conveyor mechanism (2) for moving items to be printed (3) lying on it in a forward feed direction (4), and with a print head arrangement (5) disposed above the conveyor mechanism (2) which is disposed stationary relative to the conveyor mechanism (2) during the printing process. The print head arrangement (5) is made up of several print heads (6) each with several nozzles disposed in a nozzle row (26), and the nozzle rows (22) have a printing range width (24) as measured perpendicular to the forward feed direction (4) which forms a total printing range width (27) of the print head arrangement (5) corresponding to the number of print heads (6). The print head arrangement (5) is disposed so that it can be displaced vertically on a guide (10) and a nozzle rinsing device (14) is provided which can be positioned underneath the print head arrangement (5) as and when necessary.

Abstract: An ink jet printing device (1) for printing multicolored images has an essentially horizontally extending conveyor mechanism (2) for moving items to be printed (3) lying on it in a forward feed direction (4), and a print head arrangement (5) disposed above the conveyor mechanism (2) which is disposed stationary relative to the conveyor mechanism (2) during the printing process. The print head arrangement (5) is made up of several print heads (6) each with several nozzles disposed in a nozzle row (26), and the nozzle rows (22) have a printing range width (24) as measured perpendicular to the forward feed direction (4) which forms a total printing range width (27) of the print head arrangement (5) corresponding to the number of print heads (6). The print head arrangement (5) is disposed so that it can be displaced vertically on a guide (10) and a nozzle rinsing device (14) is provided which can be positioned underneath the print head arrangement (5) as and when necessary.

Abstract: The invention describes an inkjet printer with a printing bed for displacing a print medium in a forward feed direction and a print head carriage disposed above the printing bed for displacing at least one print head unit in a transverse feed direction, a print head unit with at least one print head being provided for every colour to be printed, each print head having at least one nozzle row oriented in the forward feed direction of the print medium. The nozzles of the at least one nozzle row of the print head unit are disposed offset from one another by a nozzle distance D by reference to the forward feed direction. Another print head unit is provided, which has nozzles in at least one nozzle row disposed offset from one another by a second nozzle distance d by reference to the forward feed direction of the print medium, the ratio derived from the nozzle distance D and the second nozzle distance d being a rational number and greater than 1.

Abstract: An inkjet printer with a print head carriage is disposed above the printing bed for displacing a print head unit in a transverse feed direction, a print head unit with at least one print head being provided for every color to be printed and having at least one nozzle row oriented in the forward feed direction of the print medium. Another print head unit is provided for applying white ink, whereby the row length of the color print head unit and the row length of the other print head unit at least partially overlap with one another, and whereby of the nozzles of the nozzle row of the color print head unit, only those nozzles lying outside of the overlap region between the row length of the color print head unit and the row length of the other print head unit activated for applying white ink are activated.

Abstract: The invention describes an inkjet printer with a printing bed for displacing a print medium in a forward feed direction and a print head carriage disposed above the printing bed for displacing at least one print head unit in a transverse feed direction, a print head unit with at least one print head being provided for every colour to be printed, each print head having at least one nozzle row oriented in the forward feed direction of the print medium. The nozzles of the at least one nozzle row of the print head unit are disposed offset from one another by a nozzle distance D by reference to the forward feed direction. Another print head unit is provided, which has nozzles in at least one nozzle row disposed offset from one another by a second nozzle distance d by reference to the forward feed direction of the print medium, the ratio derived from the nozzle distance D and the second nozzle distance d being a rational number and greater than 1.

Abstract: The invention relates to an ink jet printing device (1) for printing multicoloured images, with an essentially horizontally extending conveyor mechanism (2) for moving items to be printed (3) lying on it in a forward feed direction (4), and with a print head arrangement (5) disposed above the conveyor mechanism (2) which is disposed stationary relative to the conveyor mechanism (2) during the printing process. The print head arrangement (5) is made up of several print heads (6) each with several nozzles disposed in a nozzle row (26), and the nozzle rows (22) have a printing range width (24) as measured perpendicular to the forward feed direction (4) which forms a total printing range width (27) of the print head arrangement (5) corresponding to the number of print heads (6). The print head arrangement (5) is disposed so that it can be displaced vertically on a guide (10) and a nozzle rinsing device (14) is provided which can be positioned underneath the print head arrangement (5) as and when necessary.

Abstract: The invention relates to an inkjet printing apparatus (1) with at least one printing head (2). Several tanks (3, 4) for inks and/or a cleaning medium are arranged in front of a connection opening (7) for the printing head (2), and the tanks (3, 4) are connected by feed lines (5) with the connection opening (7) for the printing head (2), whereby a stop element (6) is arranged between each tank (3, 4) and the connection opening (7).

Abstract: The invention relates to an inkjet printing apparatus (1) with at least one printing head (2). Several tanks (3, 4) for inks and/or a cleaning medium are arranged in front of a connection opening (7) for the printing head (2), and the tanks (3, 4) are connected by feed lines (5) with the connection opening (7) for the printing head (2), whereby a stop element (6) is arranged between each tank (3, 4) and the connection opening (7).

Abstract: The invention describes an inkjet printer (1) with a printing bed (2) for displacing a print medium (3) in a forward feed direction (17) and a print head carriage (10) disposed above the printing bed (2) for displacing at least one print head unit (11, 32) in a transverse feed direction (15, 16), a print head unit (11, 32) with at least one print head (12) being provided for every colour to be printed, each print head (12) having at least one nozzle row (18) oriented in the forward feed direction (17) of the print medium (3). The nozzles (19) of the at least one nozzle row (18) of the print head unit (11, 32) are disposed offset from one another by a nozzle distance D (20) by reference to the forward feed direction (17).

Abstract: A device for exposing, developing and cutting reeled photographic material comprises an exposure unit, a cutting unit and a developer unit, and transport mechanisms associated therewith and operable to transport the reeled photographic material or to hold it stationary. A first buffer container is disposed between the exposure and cutting units and a second buffer container is disposed between the cutting and developer units. The buffer containers have flaps for selectively closing and opening the buffer containers whereby the reeled photographic material may be transported above them when they are closed and buffered therein when they are open.

Abstract: A device (10) for exposing, developing and cutting photographic reeled material (9), comprises: