摘要:
A magnetic brush developer apparatus comprises a plurality of developer housings (32, 34) each including a plurality of magnetic brush rolls (35 - 38) associated therewith. Conductive magnetic brush (CMB) developer is provided in each of the developer housings. The CMB developer is used to develop electronically-formed images. The developer conductivity is in the range of 10- 9 to 10- 13 (ohm-cm)- 1 . The toner concentration of the developer is in the order of 2.0 to 3.0% by weight; the charge level is less than 20 microcoulombs/gram, and the developer rolls are spaced from the charge-retentive surface a distance in the range of 1.0 to 3.0 mm.
摘要:
0 A method of reproducing multiplex images wherein an electrostatic image is formed on an image retainer (1) by using a common electrostatic image forming device, the electrostatic image formed on the image retainer (1) is developed, the steps of the above are repeated to superpose a plurality of toner images on the image retainer (1), and the toner images is transferred on a recording paper by one step. The developings other than the first time developing are carried out in such a manner that the surface of a developer layer on a developer feeding carrier (31) does not contact with the surface of the toner image on the image retainer (1).
摘要:
Method for forming a protective transparant coating on a toner image formed electrophotographically by depositing a transparant protective toner electrophotographically and in registration on said toner image, using the same original.