摘要:
A method of driving an electro-optical light shutter for use in a recording apparatus. According to the method, an electric field of a predetermined direction is applied to the light shutter during a recording period and a further electric field having a direction opposite to the predetermined direction is applied to the light shutter during a waiting period.
摘要:
A system for recognizing a detachable article attached to an apparatus, and judging whether the article as mounted in position is genuine. The article can be identified by the predetermined device, whereas the apparatus includes a detector for detecting the device. The apparatus is driven according to a result obtained by the detector. The system of the present invention is particularly suited for a toner bottle, PC unit and so on attached to a copier, printer or other image-forming apparatus.
摘要:
An optical shutter device for use, e.g., in an optical printer includes a plurality of electrooptic chips each having a plurality of very small segments for optical modulation. The optical shutter device has a voltage adjusting circuit which individually supplies the driving voltage to the chips depending on the light transmitting characteristics intrinsic to the chips. Thus, even when the chips have different light transmitting characteristics, the image produced by the chips will have a uniform intensity.
摘要:
A light printer with a light shutter having an array of electro-optical elements is disclosed. The light printer provides with a detection circuit for monitoring temperature and/or time dependent variations regarding the electro-optical elements of the light shutter and a driving voltage control circuit for controlling an optimum driving voltage of the light shutter according to results detected by the detection circuit.
摘要:
An image forming apparatus for producing completed copies includes a main body. An image forming device is provided in the main body for forming images on paper to produce the completed copies. A tray is also provided in the main body for receiving and stacking the completed copies produced by the image forming device. A sheet transport path transports the completed copies from the image forming device to the tray. In addition, a support mechanism movably supports the tray from a first position inside of said main body where the completed copies are received and stacked thereon to a second position outside of the main body where the completed copies can be manually removed therefrom.
摘要:
A recording apparatus including a memory for storing recording information input from an external device, and an optical printing head for recording the information read from the memory onto recording paper. A writing device writes the information into the memory in the order of input, and stops the writing operation when the information as stored in the memory reaches its capacity. A reading device reads the recording information from the memory in the order opposite to the order in which the information is written, and transmits the information to the printing head for recording. The writing operation is resumed after this information is recorded on the recording paper.
摘要:
An image forming system carries out a simplex recording operation for forming an image on one side of recording paper and discharge the paper onto a discharge tray, and a composite or duplex recording operation in which image-carrying recording paper is formed with a further image on the same image-carrying side or a reverse side prior to discharge. This system includes a paper refeeding device for temporarily storing the recording paper after the simplex recording and refeeding the recording paper to an image forming device for recording a second image thereon, and a mode selector for selecting between a page arranging mode and a non-page arranging mode. The recording paper is discharged directly onto the discharge tray when the non-page arranging mode is selected. On the other hand, when the page arranging mode is selected, the recording paper is transported through the paper refeeding device and recording section and out to the discharge tray.
摘要:
A method for measuring the quantity of light emitted from an optical write head which drives an array of light shutter elements extending in a main scanning direction individually in accordance with image data. In order to measure the quantity of light outputted from each of the light shutter elements, a photosensor is moved in the main scanning direction at a constant speed while the light shutter elements are driven in such a way that adjacent elements are not driven at a time. While light shutter elements which are in odd numbers in the array are driven, the photosensor is moved forward to measure the quantities of light outputted therefrom, and while light shutter elements which are in even numbers in the array are driven, the photosensor is moved backward to measure the quantities of light outputted therefrom. The optical write head is employed in a printer together with a light-quantity measuring unit for the optical write head, so that light-quantity measurement and production of light-quantity correction data are possible at real time.
摘要:
An electrooptical light shutter device for use in an optical printer apparatus, comprising a number of shutter elements arrange in the form of at least one linear array, each of the shutter elements having an electrooptical effect, a polarizer disposed on a light-incoming side of the array of the shutter elements, and an analyzer disposed on a light-outgoing side of the array of the shutter elements, wherein the shutter elements have respective shutter windows through which light is to be passed selectively and the shutter windows are arranged to be overlapped by one another in a direction substantially perpendicular to the direction in which the shutter elements are arranged.
摘要:
The present invention relates to an image forming apparatus which comprises an optical shutter array having a plurality of optical shutters constructed of material possessing electro-optical effects, polarizing member provided on the entering light side of the optical shutter array, analyzing member provided on the exiting light side of the optical shutter array, actuation voltage impression means for applying an actuation voltage to the optical shutter array based on image signals, a photosensitive member on which an electrostatic latent image is formed by exposure to light transmitted through the optical shutter array, detecting means for detecting a decayed surface potential of the photosensitive member induced by light exposure, compensating means, when the detected value by the detecting means is greater than a predetermined reference value, for changing the actuation voltage applied to the optical shutters until said detected value is less than the reference value, control means, upon detection of the detected value to be less than said reference value, for setting the compensated voltage as a compensated actuation voltage to be applied to the optical shutter array, and which applies the compensated actuation voltage to optical shutters in accordance with the type of light generated by the light source and the spectral sensitivity of the photosensitive member.