Sharp Kabushiki Kaisha Corporation

Manabu Matsumoto

Yuji Okamoto

Norio Tomita

Kyosuke Taka

Takahiro Fukunaga

Nobuo Manabe

Mitsuharu Yoshimoto

Toshio Yamanaka

Yoshikazu Harada

Kazuma Ogawa

Masayoshi Nakabayashi

Yasushi Nakanishi

Kazushi Yamaneki

Eiji Kamimura

A user is enabled to make different selection as to whether or not to include a blank page for each data processing. A storage portion stores setting information indicating whether or not to perform data processing of image data with a blank page excluded for each data processing, and a control portion judges whether or not each data processing is processing performed with a blank page of the image data excluded based on the setting information stored in the storage portion, and executes first data processing which is judged as processing performed with the blank page excluded by excluding the blank page as well as executes second data processing which is judged as processing performed without excluding the blank page concurrently with the first data processing by including the blank page.

Image forming apparatus and image data processing method

Based on whether image formation is to be performed on an one side or both sides of record paper, and on whether image data concerning image formation is image data of an one-sided document or image data of a double-sided document, it is judged whether a blank page or a blank sheet whose both sides are blank pages is included, and image formation is performed excluding said blank page or both sides of the blank sheet based on said judgment result.

Image forming apparatus, image forming method and recording medium

A plurality of first base images are formed from a base color output in accordance with a predetermined adjustment value. A plurality of first correction images are formed on the first base images from a correction color to be a subject for correction output in accordance with a predetermined adjustment value. The first correction images are displaced within a predetermined range. The first adjustment value is determined from changed adjustment values. The second base images are formed from the base color output in accordance with the predetermined adjustment value, and the second correction images are formed from the correction color output in accordance with a plurality of adjustment values determined based on the first adjustment value. The second adjustment value having an extreme is determined from a plurality of adjustment value candidates. Finally, the adjustment value for the correction color is corrected to the determined second adjustment value.

Method of correcting adjustment value for image forming apparatus, image forming apparatus, and memory medium

An adjustment method for an image forming device, for adjusting image forming condition with respect to a sheet by using image forming means. The adjustment operation is performed in such a manner that: a first image, that is used for detecting scanning error of an image scanning device, is formed on an image carrying body and then transferred from the image carrying body to the sheet, the first image being formed over at least three corners of the sheet while extending outside the sheet. The sheet with the first image is scanned by the image scanning device to figure out a scanning error amount of the image scanning device, and a correction value of image forming condition of the image forming means is found in consideration of the scanning error amount. The image forming condition with respect to the sheet is modified based on the correction value.

Adjustment method of image forming device, image forming device, adjustment method of image forming system, image forming system, and adjustment method of image scanning device

An image processing device includes: (1) an input device for inputting image data; (2) a setting device for setting a processing mode of inputted image data; (3) an image processing section for performing predetermined image processing in accordance with the processing mode set by the setting device; (4) an output device for outputting the image data that has undergone the image processing; (5) a management device for managing output conditions of each image data to be outputted by the output device; and (6) a control device for controlling each image to be outputted by the output device in accordance with the output conditions of the image data managed by the management device. It is thus possible to certainly output the inputted image data, and quickly and appropriately recover from various troubles. Thus, this image processing device can improve the reliability in outputting the image, while minimizing the increase in the cost of the device.

Image processing device

Documents stacked in a document tray are fed from the lowermost sheet by a feeding belt and then by a feeding belt to a light exposure station via feeding rollers, and after light exposure are recirculated onto the uppermost sheet of the document tray by a inverted feeding roller via an ejection roller. When the documents are double-sided, they are invertedly fed in the direction of a feeding path by the feeding roller, fed to the light exposure station, and each side of the documents presented for light exposure. Here, when trouble occurs in the copying unit, the document in the feeding path is returned to the document tray while recirculative feeding of the documents remaining in the document tray is performed for automatic restoration of the documents to their originally stacked state when returned to the tray. Therefore, only the minimum necessary number of documents are fed through the inverted feeding path. Thus, restoration of the initial stacked state of the documents may be carried out automatically for shortening of the time required therefor.

Imaging apparatus equipped with automatic recirculating document

A time required for a copying operation is shortened in making duplex copies from simplex documents. In a copying machine provided with a recirculating document feeder for feeding documents one by one from a document container to an exposure region and returning the exposed documents to the document container, when the documents are circulated prior to the copying operation so as to count the number thereof, the copying operation is started immediately in the case where the number of the documents is detected before a first document passes the exposure region.

Copying machine

In a document feeder, documents are contained on a document rest in a stacked state. These documents are sequentially transported to a specified exposure region on a table glass member of a copying machine by a feeder and transporter and are then exposed. The documents are then discharged again onto the document rest. The documents are thereby circulated for copying. When the documents are small in number, the documents are not discharged until a copying operation of a necessary number of sheets is completed, and the documents are moved back and forth for exposure between a transport path of the feeder and the transporter. This design enables the time required for copying a small number of documents to be shortened.

Copying method and apparatus

A feeding device provided with a cassette rotatable between a longitudinal feed position from which paper is fed in a longitudinal direction and a lateral feed position from which paper is fed in a lateral direction and a feeding number memory for storing respective feeding numbers in a longitudinal direction and a lateral direction of the rotatable cassette. The feeding device is controlled such that after setting a priority of the feed direction of the rotatable cassette based on data stored in the feeding number memory, the rotatable cassette is rotated in the priority of the feed direction. As a result, the feeding device provides a more convenient and efficient operating process.

Feeding device and method for determining feeding position by feeding

A paper feeding device, used in a copier, has a swivel cassette capable of turning to a longitudinal feed position for longitudinal paper feed and to a lateral feed position for lateral paper feed. The paper feeding device is so arranged that the swivel cassette is automatically turned to a priority-given position when power is turned on, auto clear is executed or an all clear key is depressed. The paper feeding device has a memory for storing the number of sheets supplied from a respective one of the feed positions of the swivel cassette. A paper feed position used high frequency is regarded as the priority-given position by comparing the stored numbers with each other, so that the swivel cassette is set to the paper feed position used high frequency when power is turned on, auto clear is executed or the all clear key is depressed. Accordingly, the user can save the trouble of changing over to that feed position used with high frequency, and this feature improves the convenience of the copier.

Paper feeding device for feeding paper in longitudinal and lateral

An image forming apparatus allowing the optional mounting of an appropriate peripheral device to the size and the quantity of sheets. The necessity of employing a particular peripheral device is assessed on the basis of the past copying data records which are traced back so as to determine the necessity of the peripheral device.

Image forming apparatus assessing whether it is necessary to install

A copying machine comprising a handle on one side of the body of the copying machine, said handle being made usable when a paper feed tray is removed from said copying machine body; a paper feed tray sensor which is activated when said paper feed tray is mounted onto said copying machine body; a jam sensor; and a means for detecting the occurrence of a jam only when said jam sensor and said paper feed tray sensor are both activated, thereby preventing malfunctioning of a jam sensor and saving the user unnecessary trouble.

Handle for portable copying machine

An image forming apparatus with a main body composed of a light source, a photoreceptor, charging device for electrostatically a charging the surface of the photoreceptor, a developing device for supplying toner particles to the surface of the photoreceptor a transferring charger for transferring a toner image formed on the surface of the photoreceptor onto a copying sheet, and a high-voltage source for applying a high voltage trigger to both said charging device and the transferring charger simultaneously. The apparatus is designed to execute original scanning as an original glass plate is moved with respect to the main body, characterized in containing a reflecting unit for reflecting the light from the light source to illuminate the surface of the photoreceptor at an area between the charging device and the developing device, the reflecting unit is disposed at a position corresponding to the trailing end of the original glass plate in its forward movement for original scanning. The apparatus is designed to eliminate the need of providing an independent light source for blank exposure thereby simplifying the arrangement for blank exposure to be performed with respect to the photoreceptor and saving the manufacturing cost for the apparatus.

Image forming apparatus with a common power source for various chargers

An abnormality in a rotatable heat roller is detected by measuring its temperature at a specified time after the heating of the roller is started. This specified time is not fixed but is variably set according to the length of time during which the roller is rotated.

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Nara, Japan

Manabu Matsumoto