Abstract:
An image forming apparatus includes a plurality of devices for forming an image on a rotatable medium and transferring the image onto transfer material. A detector is provided to detect the electrical condition of one of the devices during an initial turn of the rotatable medium prior to image processing. Electrical circuitry then controls the electrical condition of the one device to approach a predetermined value which value is then held for controlling the device during image formation.
Abstract:
An apparatus for developing electrostatic latent images includes an applicator for applying a developer, containing a high concentration of developer particles, uniformly over both the image and non-image areas of a latent image bearing surface, and a developing device including a liquid reservoir and an elastic roller including a core shaft, a porous elastic inner layer on the core shaft, and a flexible and permeable sleeve-like net covering the inner layer. Liquid from the reservoir is applied by the roller to the image bearing surface to remove developer particles not attracted thereto by coulomb force to thereby form the developed image. Marginal effect in the developed image is eliminated by making at least one of the inner layer or net electrically conductive.
Abstract:
A method for developing electrostatic latent images comprises a first step of supplying uniformly a developer containing developing particles onto an electrostatic latent image carrying surface and a second step of supplying liquid onto the latent image carrying surface to remove any excess developer from the surface while leaving on the surface only such developing particles that are able to be retained as a result of the relative attraction between the developing particles and the electrostatic latent image so as to visualize the latent image. Apparatus for carrying out the method comprises a developing particle applying means and a liquid supplying means. The developing particle applying means is disposed to effect a uniform adhesion of developing particles onto an electrostatic latent image carrying surface. The liquid supplying means supplies a liquid onto the surface in such a manner that on the surface there remains only such developing particles that are able to be retained as a result of the relative attraction between the particles and the electrostatic latent image and all excess developing particles are removed from the surface.
Abstract:
An electrophotographic process including forming, on a photosensitive plate, an electrostatic latent image corresponding to optical information, developing the latent image by the reversal development and transferring the developed image onto a transfer material includes the improvement whereby a voltage of polarity opposite to that of the developer is applied to the photosensitive plate at least during the time from the end of the reversal development to the transfer step. This improvement in the electrophotographic process and apparatus for same prevents developer particles from being scattered away from the photosensitive plate and thereby also avoids the trouble of distortion of the image at the transfer step.
Abstract:
A liquid discharging apparatus in which a liquid is flowed in one direction in a circulation flow path at the time of non-discharge, and the flow path is refilled with liquid from both directions at the time of discharge. The liquid discharging apparatus includes a pressure adjustment unit that satisfies a condition “Pu>Pd, Pn>−Pd”, where Pu denotes a fluid pressure at a predetermined position on the upstream side of a discharge port, Pd denotes a fluid pressure at a predetermined position on the downstream side thereof, and Pn denotes a pressure equivalent to a capillary force of the discharge port for absorbing the liquid from the flow path into the discharge port immediately after the liquid has been discharged therefrom.
Abstract:
The objective of the present invention is to provide an inkjet printing apparatus that can reduce the scattering or floating, through the main body of the printing apparatus, of ink mist generated during pre-ejection. To achieve this objective, according to this invention, after a printing unit has completed ink ejection relative to an ink receiving member, and before the printing unit is moved from the position opposite the ink receiving member, an ink mist suction operation is started.
Abstract:
A recording apparatus has a recording head with a data generating unit that converts information transmitted from an external device into recording data that matches the configuration of the recording head for recording by the recording head. The recording apparatus has a first power supply circuit for supplying drive power to a drive element that drives by the nozzles of the recording head and a second power supply circuit that drives the heating elements that control recording by the nozzles. As a result, the recording apparatus can provide stable recording, unaffected by any voltage drop in the circuitry that drives the recording head.
Abstract:
A head is provided with a driving signal line having a driving terminal for receiving a driving signal sent from an apparatus to the head, and an identification terminal. The driving signal line is electrically connected to the identification terminal. With the use of the driving signal line and the identification terminal, the head is identified.
Abstract:
An ink liquid fixing device used for an ink jet recording apparatus for discharging ink liquid onto a recording medium arranged on a given feeding path for the formation of images on the medium includes a housing, a first aperture for inducing air into the housing, a second aperture having a width wider than that of the recording medium arranged on the feeding path, this second aperture being arranged to face the recording surface of the recording medium arranged on the feeding path with given gaps formed between them on the upstream and downstream sides in the feeding direction thereof, a heat emitting source facing the recording surface of the recording medium through the second aperture side portions arranged around the heat emitting source, with the first aperture being arranged on one end and the second aperture on the other end thereof, and exhaust means for inducing the air outside the housing into the housing through the first aperture to guide the air to the recording surface of the recording medium by way of the heat emitting source and second aperture, and to exhaust the air outside the housing by forming the air flow through the aforesaid gaps toward the upstream and downstream sides in the feeding direction of the recording medium. Hence the prints on the recording medium are fixed rapidly at lower running costs.