Abstract: The image reproduction system includes a light exposure unit and a photosensitive member having an outer surface. The exposure unit includes a staggered plurality of linear LED arrays and a staggered plurality of discrete objectives associated therewith which focus the light generated by the LED arrays on the outer surface of the photosensitive member.

Abstract: The image reproduction system includes a light exposure unit and a photosensitive member having an outer surface. The exposure unit includes a staggered plurality of linear LED arrays and a staggered plurality of discrete objectives associated therewith which focus the light generated by the LED arrays on the outer surface of the photosensitive member.

Abstract: A method for printing an image on a substrate by image-wise depositing, toner particles on the substrate, is disclosed, comprising: image-wise depositing dry toner particles on the substrate forming a first band-like portion of the image, conditioning the first band-like portion while keeping the substrate at a temperature equal to or lower than 100° C. and further image-wise depositing toner particles on the substrate so as to form at least one other band-like portion of such image, the at least one other band-like portion of the image being adjacent to the first band-like portion. Preferably the method is used for printing substrates with an area equal to or larger than 0.25 m2.

Abstract: Sheet joggler system with an inlet roller pair (70, 70'), an outlet roller pair (71, 71'), sheet guides (48, 49) determining a curved sheet path between these roller pairs, a sheet supporting plate (65) between the inlet roller pair and the sheet guides, a sheet stop (72) at the lower end of said plate, and lateral sheet aligning members (66, 67).

Abstract: In an apparatus and method for producing simplex prints in a single pass duplex printer, two sheets are conveyed in coinciding relationship through a common path during a print cycle. While the sheets are simultaneously conveyed through the common path, a first toner image is formed on one side of one sheet and a second toner image is formed on an opposite side of the other sheet. The toner images are simultaneously fixed on both sheets by a separate fixing station.

Abstract: An electrostatographic developing device (15) including a magnet roller (16), a chamber (41) for two-component developer, a holder (22) for toner and a toner dosage reservoir (45) with an opening closed by a magnetic plug (58) of developer, and a magnet (53) for controlling such magnetic plug.

Abstract: An improved electrostatographic color printing apparatus includes an exposure unit for forming successive electrostatic latent images on the surface of a recording member in the form of an endless belt, a developing station for sequentially developing the electrostatic latent images to form toner images on the belt, and a transfer zone having electrostatic transfer stations for sequentially transferring the toner images from the belt in superposition onto a receptor sheet fed through the transfer stations while in contact with a belt section therein to produce a multicolour duplex image.

Abstract: An apparatus used in electrophotographic printing or copying for conveying magnetically attractable toner or developer particles that includes a stator, electric windings, and an end-plate made of magnetizable material arranged in parallel with the major dimension of the stator. The end-plate and the stator define a channel therebetween in which the particles are conveyed. Electric current supplied to the windings creates a magnetic field whose force moves the particles within the channel. This apparatus may be realized by converting a linear induction electromotor having a stator, an armature, and a translator and replacing the armature and translator with the magnetizable end-plate. Alternatively, this apparatus may be realized by converting a linear induction electromotor having a double stator and a translator and replacing one of the stators and the translator with the magnetizable end-plate.

Abstract: An electrostatographic developing device having a developer chamber (26), a toner chamber (21), a dosage reservoir (9) and a developer roller (13) mounted within a rotatable housing (11).

Abstract: An electrostatographic printing apparatus is provided that is adapted for single-pass sequential multi-color duplex printing wherein the printing involves deposition and fixation of toner particles on a web-type final substrate. The apparatus includes: a first printing system having a first guiding member; a second printing system having a second guiding member, the printing systems being arranged in succession at opposite sides of the final substrate; an apparatus for rotating the guiding members and conveying the final substrate; an apparatus in each of the printing systems for superimposing color separation images in registration on the final substrate, wherein the color separation images are toner images including the toner particles; and an apparatus located between the first and second printing systems for reversing the charge polarity of the toner particles deposited onto the final substrate in the first printing system when the toner particles in the printing systems have the same charge polarity.

Abstract: An electrostatographic printing apparatus is provided, suited for single-pass sequential multi-color duplex printing, characterized in that the printing proceeds by depositing and fixing toner particles on a final substrate (1) in web form. The apparatus includes two printing systems arranged in succession on opposite sides of the final substrate (1). Each of the printing systems includes an intermediate rotatable toner-receiving member (3), a device for rotationally driving the intermediate toner-receiving member (3), a device for superimposing color separation images in registration on the intermediate toner-receiving member (3), and a device for simultaneously transferring the superposed color separation images from the intermediate toner-receiving member (3) onto the final substrate (1).

Abstract: Provided is an apparatus for processing a photographic sheet (9) which comprises at least one station (4) with inlet and outlet pressure roller pairs (42 to 45) for transporting the sheet, spray means (22) for spraying processing liquid (21) onto at least one surface of the sheet, characterised in that the station (4) comprises sealing means for maintaining a liquid seal (58, 59) between at least one roller of at least one roller pair and an adjacent wall of the washing station. Also provided is an apparatus for making an offset printing plate according to the silver salt diffusion transfer process, using the described station (4) as washing station. Also provided is a method for making an offset printing plate using the above described apparatus for processing an imaging element.