Abstract: In a method and system for printing, individual pages of a print medium are transported. With a printing unit, a side of the respective individual page facing it is printed and the applied toner image is fixed. With an inverter, the individual pages with the fixed toner image are inverted after the first printing event and resupplied to the printing unit for printing on an other side. The printing unit has first and second printing groups respectively comprising first and second exposure units, first and second charge corona devices, and first and second developer stations. Individual pages are supplied in succession to both of the first and second printing groups, and the printing groups respectively print two varicolored print images on the same side of the same individual page.

Abstract: In a method and system for printing, individual pages of a print medium are transported. With a printing unit, a side of the respective individual page facing it is printed and the applied toner image is fixed. With an inverter, the individual pages with the fixed toner image are inverted after the first printing event and resupplied to the printing unit for printing on an other side. The printing unit has first and second printing groups respectively comprising first and second exposure units, first and second charge corona devices, and first and second developer stations. Individual pages are supplied in succession to both of the first and second printing groups, and the printing groups respectively print two varicolored print images on the same side of the same individual page.

Abstract: A printer or copier includes a high speed monochrome or two color printer portion and a slower full color printer portion. Print job signals are divided into monochrome and color printed pages and sent to the corresponding printer portion. The printers, or a paper handling path between the printers, is controlled to assemble the printed pages into a predetermined sequence order.

Abstract: A printer or copier includes a high speed monochrome or two color printer portion and a slower full color printer portion. Print job signals are divided into monochrome and color printed pages and sent to the corresponding printer portion. The printers, or a paper handling path between the printers, is controlled to assemble the printed pages into a predetermined sequence order.

Abstract: A printer or copier and method generates toner images for transfer onto a recording medium. A latent charge image is generated on a photoconductor and is developed by the application of toner by at least one developer station to generate the toner image for transfer to the recording medium. A plurality of the developer stations are provided along the photoconductor to develop the images in color using a color separation method. A transfer band collects the color separations on top of one another to generate the overall toner image which is transferred to the recording medium. Multiple modules, each with developer stations, a photoconductor and a transfer band may be provided for one sided or two sided printing.

Abstract: An electrographic printer device is designed for printing tape-shaped recording media (10) with different tape widths in different operating modes such as single-color and multi-color simplex printing, single-color and multi-color duplex printing and for simultaneous printing of two recording medium webs in parallel operation. It comprises a module-like device structure with a printer module having a means for generating toner images arranged therein. A single fixing station (18) is arranged above this means. Via a deflection means (28), the recording medium (10) is supplied in single-color or multi-color duplex mode to a return channel (38) that contains a turn-over station (30).

Abstract: An electrographic printer device is designed for printing web-shaped recording media (10) having different web widths in different operating modes, such as single-colored and multi-colored simplex printing, single-colored and multi-colored duplex printing and for simultaneously printing two recording medium webs in parallel operation. To this end, the units of the printer device such as intermediate carrier (11), transfer printing station (15) and fixing station (18) comprise a usable width of at least twice the web width of a narrow recording medium. The printer device further contains a deflection means (28) following the fixing station (18) and engageable as needed and having an allocated return channel to the transfer printing station (15) via which the recording medium (10) is turned and resupplied to the transfer printing station (15) in single-color or multi-color duplex mode.

Abstract: An electrographic printer device is designed for printing web-shaped recording media (10) having different web widths in different operating modes, such as single-colored and multi-colored simplex printing, single-colored and multi-colored duplex printing and for simultaneously printing two recording medium webs in parallel operation. To this end, the units of the printer device such as intermediate carrier (11), transfer printing station (15) and fixing station (18) comprise a usable width of at least twice the web width of a narrow recording medium. The printer device further contains a deflection means (28) following the fixing station (18) and engageable as needed and having an allocated return channel to the transfer printing station (15) via which the recording medium (10) is turned and resupplied to the transfer printing station (15) in single-color or multi-color duplex mode.

Abstract: A printing or copying machine has a photoconductor (10) with associated recording and developing station (EY, EM, EC, EB) for producing single-color or multi-color toner images on the intermediate image-carrier (10). The toner images are transferred electrostatically, in a transfer zone (T) onto a belt-type transfer element (16) and then, in transfer and fusing zones (U1, U2), printed from the underneath from the transfer element onto the recording carriers (24). In order to facilitate the fusing of the transfer image in the transfer and fusing stations (U1, U2), heating units (23, 31) for heating the toner images on the transfer element (16) and/or for heating the recording carrier (24) are provided. Between the first and the second transfer and fusing station (U1, U2), a turning station (W) is arranged. The printing or copying machine can be operated in the simplex and duplex printing mode of operation to produce single-color or multi-color copies.

Abstract: A stacking apparatus for printers, to build up a stack (20/1, 20/2) of individual sheets (13), includes two transport systems, designed in the form of roller cages (1/1, 1/2), for individual sheets, which systems are arranged axially parallel next to each other. Each of the roller cages (1/1, 1/2) has on its periphery roller-shaped transport elements (3) which extend in the axial direction of the roller cages (1/1, 1/2) and are spaced apart by gaps. They individually surround separate partial depositing surfaces (7/1, 7/2) of a common, inner depositing surface which crosses through both roller cages (1/1, 1/2) and is for receiving the individual sheets (10) to be stacked. By moving the roller cages (1/1, 1/2) in opposite directions, the roller cages centrally take up the individual sheets (10) to be stacked and transport them into a depositing position arranged above or below the roller cages (1/1, 1/2).

Abstract: In a single-sheet page printer for both-sided printing of recording media, a flattening device is provided for flattening the curled recording media resulting from pressure and temperature influences in the print fixing station of the printer. The flattening device deforms the recording media in the plastic domain so that the recording media are again lent a smooth and flat form. To this end, the recording medium is pulled over an edge by paper conveyor rollers opposite a pressing power exerted by spring elements and is thereby pulled taut and aligned. When the flattening device is arranged immediately following the fixing station, then it is proposed that the pressure roller be set back in the direction of the recording medium delivery relative to the position of the fixing drum.

Abstract: An electrophotographic printer means contains a process-controlled regulating arrangement for acquiring and regulating the critical operating parameters of the electrophotographic process. It comprises a first regulating stage for stabilizing the electrophotographic process on the photoconductor (12) by regulating the charging potential (18) the discharge illumination (17) and by acquiring and monitoring the residual potential (SL). It further comprises a second regulating stage for assuring and optimizing the development of the charge image by regulating the toner delivery to the developing region (14) and the inking of the charge image, and comprises a third regulating stage for assuring and optimizing the transfer printing by acquiring the specific characteristic quantities of the recording medium and regulating the corona means (UK).

Abstract: A tank system for cold fixing a toner powder on a paper as it is conducted through a fixing station of a non-mechanical high speed printing and copying device characterized by the printed paper being conducted through an atmosphere enriched with the vapor of a fixing agent. The tank system includes an injection tank which is connected to a replaceable feed container containing the agent with the injection tank being controlled to inject the agent into the fixing station to maintain the desired concentration of the vapor. The system also includes a recovery device including a water separator which separates condensed fixing agent from the water of the condensate. The system also includes a buffer tank which receives the recovered fixing agent, a pressure tank which is coupled to the buffer tank and has an outlet with a valve connected to the supply system, and an air pump to supply compressed air to the pressure tank to return any agent in the tank into the feed container and/or into the injection tank.

Abstract: An electrographic printer device is designed for printing web-shaped recording media (10) having different web widths in different operating modes, such as single-colored and multi-colored simplex printing, single-colored and multi-colored duplex printing and for simultaneously printing two recording medium webs in parallel operation. To this end, the units of the printer device such as intermediate carrier (11), transfer printing station (15) and fixing station (18) comprise a usable width of at least twice the web width of a narrow recording medium. The printer device further contains a deflection means (28) following the fixing station (18) and engageable as needed and having an allocated return channel to the transfer printing station (15) via which the recording medium (10) is turned and resupplied to the transfer printing station (15) in single-color or multi-color duplex mode.