Abstract: Method is disclosed for developing electrostatic latent images, utilizing a developer supply unit formed of a liquid repellent layer having a thickness in the range of 3.mu. to 400.mu. (preferably 5.mu. to 330.mu.), and a substrate, and having uniformly distributed pores disposed therethrough. A liquid developer is supplied to the back surface of this unit, and an exposing unit is disposed to form electrostatic latent images onto the front surface of the developer supply unit. As a result, the liquid developer applied to the back surface of the liquid repellent layer is distributed on the front surface by the action of the electric field established by the latent image.
Type:
Grant
Filed:
August 13, 1975
Date of Patent:
November 15, 1977
Assignee:
Research and Development Laboratories of Ohno Co., Ltd.
Abstract: This apparatus is disclosed for developing electrostatic latent images, comprising a developer supply unit having a first liquid repellent layer with a thickness in the range of 3 - 400.mu.(preferably 5 - 330.mu.). The first layer is disposed on a surface of a substrate, having a plurality of closely spaced pores distributed uniformly over the entire surface of the substrate and penetrating to the back surface thereof. A liquid developer is supplied to a first or back surface of this unit. A photoconductive sensitive plate is spaced closely to a front or second surface of the developer supply unit, to attract the developer to exude through the pores from the first surface of the said liquid repellent layer. More specifically, an electrostatic voltage is applied between the developer supply unit and the photoconductive sensitive plate to provide an electrostatic latent image preformed of electrostatic charges.
Type:
Grant
Filed:
May 30, 1975
Date of Patent:
May 17, 1977
Assignee:
Research and Development Laboratories of Ohno Co., Ltd.
Abstract: An X-Y plotter which effects non-impact recording by the application of a jet of liquid marking medium to a recording medium while the amount of liquid marking medium to be jetted towards the recording medium is controlled in accordance with the recording velocity. To this end, a signal generator is employed for generating an output signal in response to receipt of signals respectively indicative of the velocity of an X-axis carriage of the X-Y plotter and of the velocity a Y-axis carriage of the X-Y plotter. The output signal emerging from the signal generator indicates the recording velocity which is defined by the square root of the sum of the second power of the velocity of the X-axis carriage and that of the velocity of the Y-axis carriage. The amount of liquid marking medium to be jetted is controlled in response to the recording velocity so that the liquid marking medium can be jetted in an amount proportional to the recording velocity.
Type:
Grant
Filed:
June 3, 1974
Date of Patent:
July 6, 1976
Assignee:
Research and Development Laboratories of Ohno Co., Ltd.