摘要:
A personal computer has a print image developing means and a data compression means including a fixed rate compression. A color printer has a data extension means, a color correction means, a gamma correction means, a first halftoning means, an image area segmentation means, and a second halftoning means. The transmission time of a print image can be shortened necessarily to less than a constant time, and further, since an enormous memory for extension is unnecessary, a low cost printer can be provided.
摘要:
A substrate transfer apparatus comprising: a plurality of floating-transfer guide plates adjacent to each other with a space, each of guide plate having a plurality of floating gas ejecting holes; a gas supplying source for supplying a floating gas to the guide plates; a tray that is placed on one of the guide plates in order to mount a substrate to be transferred, and that is floated by the floating gas; and a transfer arm for transferring the floated tray to the adjacent other guide plate from the guide plate, wherein the tray includes a main body portion having both side edges parallel to a transfer direction of the tray, and an outward projecting portion that is formed so as to partially project outwardly from at least one of both side edges of the main body portion, and wherein the transfer arm is in contact and engaged with the outward projecting portion when the tray is transferred by the transfer arm.
摘要:
The present invention relates to a desk-top type color electro-photographic apparatus which is easy in use, small in size and light in weight, wherein maintenance such as changing its photosensitive member can be performed by a user and color adjustment is performed with high accuracy of less than 100 .mu.m. Developing units for four colors are placed in a rank, a single endless-belt-shaped photosensitive member being placed below them to form an approximately oval shape, the photosensitive member being touched with a transfer member on its major axis side to transfer each color of images. In addition to this, the photosensitive member is employed a cartridge type for easiness of user's maintenance and constructed such that highly accurate positioning between the body of apparatus and the cartridge can be performed. Effect of the eccentricity of pulleys is decreased by means of making the pulleys wrapped with the photosensitive member have the identical diameter and making the diameter of the transfer member integer times as large as that of the pulley.
摘要:
A method of recording a color image in such a manner that two toner images of different colors are formed on the basis of video signals supplied from an information processor for producing different colors, and the toner images are transferred to a sheet of recording paper so that the toner images overlap each other, is disclosed, in which method video signal portions for forming contiguous toner images of different colors at a recording position are extracted from the video signals, and one of the video signal portions is extended so that the toner image based upon the video signal portion is enlarged in the direction of the boundary between the contiguous toner images based upon the video signal portions, to prevent a gap having the ground color of the recording paper from generating between the contiguous toner images even when one of the contiguous toner images is spaced apart from the other toner image.
摘要:
The color printer of the present invention includes a memory for storing latest history information of a print-out means, a controller for judging the worn conditions of expendable members on the basis of the history information and for generating maintenance information image data wherein expendable members which are before the exchange time and expendable members which are after the exchange time are sorted in different colors, and an operator panel for printing the maintenance information image data on a recording medium in color by the print-out means. According to the present invention, maintenance information necessary for performing maintenance and inspection or for exchanging expendable members can be outputted in a color image form which is color-coded quite obviously.
摘要:
A pixel signal which is sent together with an emphasis request signal and the like from a pixel information generating section to a scanning type image recording unit is reduced or enlarged by a fine adjusting section provided in the scanning type image recording unit and is used to modulate a laser beam. The scanning type image recording unit has an operation panel to generate a pixel reduction or enlargement request signal. The fine adjusting section enlarges or reduces the pixel signal in accordance with a request signal which is given from the operation panel.
摘要:
A substrate transfer apparatus comprising: a plurality of floating-transfer guide plates adjacent to each other with a space therebetween, each of the guide plates having a substrate-placing surface on which a substrate is to be placed, and a plurality of floating-gas ejecting holes for floating the substrate with use of a gas; a gas supplying source for supplying the floating gas to the respective guide plates; and an arm for transferring the floated substrate from the guide plate, from which the substrate is to be transferred, to the adjacent guide plate to which the substrate is to be transferred, wherein the substrate-placing surface of the guide plate to which the substrate is to be transferred is situated lower than the substrate-placing surface of the guide plate from which the substrate is to be transferred.
摘要:
A color electrophotographic apparatus includes a photosensitive belt arranged obliquely, and a plurality of developing machines arranged on one side of the photosensitive belt in a stacked manner so as to be displaced from one another in a horizontal direction. The photosensitive belt is movable from below to above in a direction opposite to a direction of gravity when in a developing position. The developing machines include a non-magnetic, one component contact developing system having a developing roll for adhering toner on the photosensitive belt and a blade disposed below the developing roll for controlling an amount of toner adhering to the developing roll.
摘要:
A laser beam printer operatively responsive to a printing signal fed from a host control unit includes a printing unit for executing a xerographic process, a laser beam scanning unit, a fusing unit, a process control unit for controlling said printing unit, the laser beam scanning unit, and the fusing unit, and a signal processing unit for receiving the printing signal from the host control unit. When the host control unit begins to supply a printing signal to the signal processing unit, the signal processing unit supplies a provisional start signal to the process control unit. Upon receiving the provisional start signal, the process control unit controls the printing unit, the scanning unit, and the fusing unit to bring them into a ready state.
摘要:
A control system for an illumination lamp installed in a building equipped with a door operation control apparatus. The system comprises a door opening and closing instructor, a control circuit responsive to an instruction signal from the instructor to produce a door control signal and a lamp control signal, a door driver responsive to the door control signal to drive the opening and closing of a door, an illumination lamp for illumination of the interior of the building, a detector for detecting the movement of a human body and producing an electric signal representative of the movement, and a circuit which is responsive to the lamp control signal and the electric signal to turn on the illumination lamp and keeps the illumination lamp turned on for a predetermined time extending from the termination of the lamp control signal and the electric signal.