Abstract: The number of copied sheets of paper accommodated in a staple tray for stapling process are counted by a counter. A transport path changeover member is switched over from a guide position to convey copy paper to the staple tray to a guide position to convey the copy paper to another discharge tray where stapling process is not performed corresponding to the counter value reaching the limit of stapling process. The copied sheets are, thereafter, guided to the discharge tray to continue on copying operation.

Abstract: A data input apparatus for inputting control information to a data card for controlling a machine by means of the same comprises a memory in which specification of the machine to be controlled by the card have been stored and an operation panel for inputting operation mode of the machine. If the inputted operation mode is out of the stored specification of the machine, the control information of the machine is not inputted to the data card.

Abstract: An image forming apparatus has a sheet handling section for receiving sheets printed at a copying machine, which is operable in a mode of ejecting printed sheets outside and in a mode of collecting printed sheets inside thereof to process the sheets. The apparatus comprises a sheet path located inside the apparatus, which is openable so that a jammed sheet can be removed; an outside cover which is openable so that an operator can gain access to the sheet path; a sensor for detecting whether the outside cover is in an open state or a closed state; a jam detector for detecting the occurrence of a sheet jam at each part in the sheet path; a jam reacting device; a jam reaction resetting device; and a mode selector.

Abstract: An image duplicating apparatus having an automatic document feed device. The document feed device is movable between an opened and a closed position, and is operable to automatically convey documents to a document support table of an image forming device, and to automatically discharge documents from the document support table after images from the documents have been copied by the image forming device. An automatic document discharge prohibit instruction is produced by a control arrangement of the apparatus when a document is manually placed on the document support table, however a document discharge instruction may be manually entered to override the prohibit instruction, if desired by an operator of the apparatus.

Abstract: A data input apparatus for inputting control information to a data card for controlling a machine by means of the same comprises a memory in which specification of the machine to be controlled by the card have been stored and an operation panel for inputting operation mode of the machine. If the inputted operation mode is out of the stored specification of the machine, the control information of the machine is not inputted to the data card.

Abstract: The number of copied sheets of paper accommodated in a staple tray for stapling process are counted by a counter. A transport path changeover member is switched over from a guide position to convey copy paper to the staple tray to a guide position to convey the copy paper to another discharge tray where stapling process is not performed corresponding to the counter value reaching the limit of stapling process. The copied sheets are, thereafter, guided to the discharge tray to continue on copying operation.

Abstract: An improved image forming apparatus, for example, in the form of a copying apparatus is arranged to selectively load data of a specific mode from data of a plurality of modes stored in a memory medium through operation of an operating input device such as key switches or the like. The apparatus is particularly capable of readily loading data of the desired mode from the memory medium.

Abstract: An image forming apparatus for conducting a different manner of copy process for each of a plurality of regions which are subdivided from one original document. The image forming apparatus includes a plurality of levers for assigning boundaries of each region and a specifying device for specifying the number of regions and pattern of the copy process executed in each region. At least one of the plurality of designating levers are invalidated so as to achieve agreement between the number of the regions specified by the specifying device and the number of the regions subdivided by the designating levers when these numbers do not agree.

Abstract: In a scan-mode changeable image duplicating apparatus including scanner units for optically scanning a document and having a scanner-moved scanning mode in which the scanner units is driven to move for scanning a document fixedly held in place and a document-moved scanning mode in which the scanner units is fixed to scan a document being moved with respect to the scanner units, a control system comprising an initial scan-mode select switch allowing the user of the apparatus to select one of the scanner-moved and document-moved scanning modes as a preferential initial scanning mode, a duplicating mode select key allowing the user to select a predetermined duplicating mode which is compatible with both of the document-moved and scanner-moved scanning modes, and a control circuit for judging whether or not the predetermined duplicating mode is currently selected by the duplicating mode select key and automatically selecting the preferential initial scanning mode when it is judged that the predetermined duplicati

Abstract: An image duplicating apparatus having an edited mode of copying operation in which an edited copy of a given image is to be produced, wherein editing data indicative of any desired conditions of operation in which the edited mode of copying operation is to be executed for a desired edited copy area may be entered by the operator in any desired manner after area data indicative of the desired edited copy area in which images are to be reproduced in the edited mode of copying operation has been entered under the edited mode of copying operation.

Abstract: The present invention is directed to an image forming apparatus comprising, a copying machine including a plurality of developing units, and having a simultaneous multicolor copying mode for obtaining a multicolor copy by switching developing colors during one scanning operation, and an interrupt function for effecting interrupt copying, whereby when the simultaneous multicolor copying mode is executed, the interrupt copying is prohibited to prevent miscopying caused by interrupt copying at the simultaneous multicolor copying.

Abstract: A copying machine includes first and second developing units, each of which contains different color developer. The copy machine is capable of developing an electrostatic latent image on the surface of a photoconductor through individual or successive operation of the first and second developing units. An arrangement is provided for counting the number of copying operations that each developing unit is subjected to during a single scan of the scanning device. The arrangement increases the count values associated with the first developer unit when the first developer unit is operated individually, and increases the count value associated with the second developer unit when the second developer unit is operated individually. Further, the arrangement increases the count value associated with the first and second developer units when both developer units are operated together.

Abstract: An image forming apparatus equipped with a plurality of developing units respectively using different color toners, and capable of forming a two-color image. The image forming apparatus is able to operate selectively in a first image forming mode for forming a single-color image, and in a second image forming mode for forming a two-color image. In the second image forming mode, sections of a latent image respectively corresponding to previously demarcated sections of the contact glass are developed in two different colors by operating the two developing units in an appropriate sequence. Selection of the second image forming mode is inhibited and an alarm signal is provided when only one of the plurality of developing units is mounted in place on the frame of the image forming apparatus.

Abstract: A copying machine capable of executing a divisional copy mode (book copy mode) wherein an original of two image sides, i.e., two open-out successive pages of a book is copied separately based on one copy instruction and a simul-color copy mode wherein a copy image of two or more colors can be obtained by changing over the developing units to be used during one copying operation. To execute the simul-color copy mode, the copying machine includes a color dividing position for dividing one of image sides into a plurality of color regions.In the case where the divisional copy mode and simul-color copy mode are simultaneously designated, two image sides are separately copied, and also, one of the image sides in which the color dividing position exists is copied to obtain a multi-color copy image by the simul-color copy mode.

Abstract: An image duplicating apparatus having a document table for supporting a document sheet thereon divides an image area of the document into two sections and successively duplicates the respective images of the two sections onto two separate copy surfaces. Switches specify the ratio by which an image on the document sheet is to be magnified or reduced for. An image magnification/reduction lens unit responds to the switches for altering a currently established magnification or reduction ratio to the newly specified ratio of magnification or reduction. A control circuit controls the duplicating means so that, when the magnification or reduction ratio is altered prior to termination of the duplication of a first one of the two sections, a second one of the two sections is copied in the altered magnification or reduction ratio.

Abstract: A multiple-mode image duplicating apparatus having a plurality of groups of modes of operation, comprising image reproducing means, first selecting means for selecting a single group of modes out of the plurality of groups of modes of operation, second selecting means for selecting a single mode of operation from the group of modes selected by the first selecting means, and control means for controlling the image reproducing means to operate for the mode of operation specified by the first and second selecting means.

Abstract: An image forming apparatus having a presettable counter and a display device for displaying the contents of the counter, in such arrangement that when copying operation is carried out in the automatic paper feed mode, the content of the counter is decreased by "1" at a time, and when copying is made in the manual paper feed mode, the content of the counter is increased by "1" at a time. For operation in the automatic feed mode, as is the case with the prior-art arrangement, a required number of copies to be made is preset into the counter and the remaining necessary number of copies to be made is displayed on the display device. When operation is performed in the manual feed mode, the number of copies already made is preset in the counter, and when the contents of the counter reaches the required total number of copies, paper feeding will be stopped.