Abstract: A main body 1 of an electrophotographic copying machine has feed openings to which a plurality of cassettes 20 and 21 for containing paper of different sizes are attached. The sizes of paper and setting directions of paper are detected by microswitches 410 to 413 and 414 to 417. A document feeding unit 300 is placed on the main body 1 and while a document is fed to an exposure position by means of the document feeding unit 300, the size of the document is detected by a sensor 310. In an automatic paper selection mode, even if paper does not exist in a selected feed opening, it is determined whether paper suited to be used, taking into account the size of the document and the magnification, exists in any other feed openings. If it exists in any one of the feed openings, this opening is selected. If it does not exist in any of the feed openings, copy operation is forbidden and a microprocessor 201 of the main body 1 is programmed to display the forbidden state.

Abstract: A copying machine having a function of prohibiting the operation of an automatic document take-up unit. This copying machine includes an automatic document take-up unit and a document feeder for feeding a document, a document turnover unit for turning over the document for copying of both sides of the document, a designating unit for designating a copy side, a detecting unit for detecting whether the document turnover unit is attached or not, and a prohibiting unit for prohibiting the automatic document take-up unit from operation in case the document turnover unit is not attached.

Abstract: A copying machine having an auto-document feeder (ADF) together with a plurality of paper feeding means is disclosed.Control means is provided in the copying machine for operating the ADF even when the copying machine is in a waiting state. If the print button is operated in the waiting state, said control means makes the ADF operate to set a document on a document tray beforehand.

Abstract: The present invention relates to a copying machine for producing copies of variable magnification. The copying machine displays numerical values of a linear magnification and an area magification. The area magnification is square of the linear magnification. Furthermore the copying machine can be inputted arbitrary numerical values as the linear magnifications and the area magnifications.

Abstract: An improved electrostatic photo-copying machine is proposed. In this improved photo-copier, an optical system for scanning a document from which photocopies are to be made is provided. However, the movable range of the optical system is divided into a front half and a rear half, adapted for execution of successive scannings so as to provide a book copy mode operation. If, however, an incompatible operation to the book copy mode, for instance, manual feed of any suitable size copy paper through a manual feed opening; automatic document feed mode or the like has been specified, the once and in advance selected-out book copy mode is automatically released from service.

Abstract: The present invention relates to a copying apparatus capable of executing a plurality of different copy modes, especially a binding margin forming copy mode for making a binding margin on a copy to be formed and an anamorphic magnification copy mode for magnifying or reducing an image to be formed in one direction, i.e., in the lengthwise direction or in the widthwise direction.In a copying apparatus of the present invention, when the binding margin forming copy mode or anamorphic magnification copy mode is selected, an increment-decrement key input means used for a copy mode other than said selected copy mode is enabled to become input means for setting numerical values to set condition for the selected copy mode.

Abstract: A copier having a magnification setting mechanism equipped with an improved numeral calculating function. According to the copier, immediately after a completion of magnification calculation and based on a calculated result, a magnification setting is carried out, thereby enabling a copying operation and also the calculated result is stored in a memory when necessary.

Abstract: A copying apparatus includes a feeding station capable of providing a plurality of feeding sections of different size copying paper. The copying apparatus is capable of receiving an input magnification ratio and also of designating a binding margin reduction copy mode. The binding margin can be set by an operator and a control device can automatically calculate a magnification ratio from the amount of the binding margin and the size of the copying paper. The feeding section having a desired size copying paper can be automatically selected.

Abstract: A copying apparatus capable of making a copy of selected area of a document achieves various procedure of partly copying in combination with an automatic document feeder capable of inverting the document, an area selecting mechanism with a block indication, an automatically magnification selecting mechanism, an automatically paper-size selecting mechanism, a duplex mechanism and a copy paper re-feeding mechanism.

Abstract: A copying apparatus comprises a plurality of sheet storing trays, a detector for detecting a quantity of sheets of paper in each tray, and an indicator. The indicator displays a capacity of a tray selected for copy operation and also displays the remaining quantity of sheets in that tray in response to the detector.

Abstract: A copying machine capable of forming filing margins on both sides of a copying paper forms a filing margin on one side of a copying paper by an ordinary method in which an image of document to be copied is reduced and shifted, and forms a filing margin on the other side of the copying paper by means of shifting the image in a direction opposite to the direction shifted in the ordinary method by the width of the filing margin. Accordingly, filing margins are correctly formed on both sides of the copying paper in the same marginal sides, respectively.

Abstract: The present invention relates to a copying machine capable of executing a duplex mode copying and composite mode copying. The copying machine has an intermediate tray for receiving and aligning the copied papers and for re-feeding them to an image formation station. The operation of the intermediate tray is controlled in accordance with the copy mode.

Abstract: The present invention relates to a copying apparatus capable of executing a binding margin reduction copy mode to form a copy with binding margin by simultaneously reducing an image in which various drawbacks inherent in executing said copy mode are avoided to obtain copies without causing unwanted copies.For example, when a cassette accommodating the designated size of paper is not present or is removed from the copying apparatus, the binding margin reduction copy mode is released to prevent the execution of the copy mode.

Abstract: A copying machine having a first plurality of individual light emitting elements can be selectively illuminated depending on the copy size desired. Corresponding second array of light emitting elements can define an erasing apparatus positioned adjacent a photosensitvie member. An operator can designate the area to be copied. Control apparatus can control the individual light emitting elements based on the set predetermined copying conditions.

Abstract: A copying apparatus including a recording module for forming an image on copy paper sheets fed from a sheet feeding portion and discharging the copy paper sheets to a sheet ejecting portion and a sheet processing module mounted detachably on the sheet ejecting portion. The sheet processing module includes a sheet cassette mounted detachably on the sheet processing module and the sheet feeding portion, a copy receiving tray and a changeover device for changing over to the sheet cassette or the copy receiving tray, a passage of the copy paper sheets discharged from the sheet ejecting portion.

Abstract: A copying apparatus including a recording device for forming an image on copy paper sheets fed from a sheet feeding portion and discharging the copy paper sheets to a sheet ejecting portion, a sheet cassette mounted detachably on the sheet ejecting portion and the sheet feeding portion, a copy receiving tray, a mode selecting device for selecting first and second modes for accommodating the discharged copy paper sheets in the copy receiving tray and the sheet cassette, respectively, a cassette detecting device and a control device for controlling the mode selecting device in accordance with detection states of the cassette detecting device.

Abstract: In the present invention, there is disclosed an image forming apparatus in which an electrostatic latent image formed on a photosensitive member is developed and subsequently transferred to a paper. The apparatus comprises a plurality of developing devices selectively operable to develop the electrostatic latent image, an agitator provided in each of the developing devices for agitating developer contained therein, and a device responsive to a power switch for driving each of the agitators for a predetermined period of time. One of the developing devices is driven to develop the electrostatic latent image during an image forming cycle. Another device is responsive to termination of the image forming cycle for at least driving the agitators of the developing devices not used in the image forming cycle for a predetermined period of time.

Abstract: The present invention relates to a copying apparatus with a document feeder. A document being copied is fed out from the copying position to a retaining position where it is held temporarily upon initiation of an interruption copying mode. The document is held at the retaining position while another document is copied and upon release of the interruption copying mode, the document is automatically fed back to the copying position from the retaining position to resume the copying.

Abstract: The present invention relates to a copying machine capable of copying halves of a document onto different copying paper surfaces. When the size of the document is in a predetermined relation with the size of a previously copied document, for example double size of the previously copied document, the copying machine copies halves of the original document respectively on different copy sheets.

Abstract: A multimode copying machine including a document conveying device, a manual paper feeding device and a manual feed mode switching device. The copying machine further includes a switch disposed adjacent to the manual paper feeding device for outputting a document change request signal, and a controller operable in response to the signal output in a manual feed mode to actuate the document conveying device for document changing.