Abstract: To provide a heterogeneous catalyst that exhibits high activity and high selectivity, specifically a catalyst suitable for oxychlorination to produce 1,2-dichloroethane from ethylene, and a catalyst system. Provided are: a heterogeneous catalyst supported on a porous carrier, characterized in that the integral value of the hysteresis occurring between an adsorption isotherm and a desorption isotherm by a gas adsorption method, is at most 19% to the total integral value of the adsorption isotherm; and a catalyst system for producing 1,2-dichloroethane, which comprises this catalyst and a diluent having a spherical shape, circular cylindrical shape or hollow cylindrical shape.

Abstract: To provide a heterogeneous catalyst that exhibits high activity and high selectivity, specifically a catalyst suitable for oxychlorination to produce 1,2-dichloroethane from ethylene, and a catalyst system. Provided are: a heterogeneous catalyst supported on a porous carrier, characterized in that the integral value of the hysteresis occurring between an adsorption isotherm and a desorption isotherm by a gas adsorption method, is at most 19% to the total integral value of the adsorption isotherm; and a catalyst system for producing 1,2-dichloroethane, which comprises this catalyst and a diluent having a spherical shape, circular cylindrical shape or hollow cylindrical shape.

Abstract: A document management apparatus delivers a to-be-delivered document to a delivery destination and collects information about browsing history of the document. The document management apparatus includes: a delivery-pattern determining unit; a delivery-information generating unit; a document delivery unit that delivers the document by transmitting the information of the delivery pattern to a network address of the delivery destination; and a browsing-history management unit that acquires information about browsing history. The delivery-pattern determining unit, when the type of the device is a type not adapted to a function of collecting information about browsing history, determines that a pattern for delivering a program for implementing collection of the information about browsing history together with the document as the delivery pattern.

Abstract: An image forming device is disclosed that is able to prevent halt of operations due to full memory occupation, and prevent the full occupation of the memory. The image forming device includes a reading unit; an image data storage unit; a vacancy waiting unit that, when allocating a storage area for storing image data in the image data storage unit, waits until the storage size of a vacancy in the image data storage unit becomes greater than a predetermined value when allocation of the storage area fails; a failure processing unit that, when allocating the storage area for storing the image data in the image data storage unit, performs failure processing when allocation of the storage area fails; and a control unit that controls one of the vacancy waiting unit and the failure processing unit according to image forming conditions in the image forming device.

Abstract: A disclosed image formation apparatus includes: an operation unit allowing input of reading conditions of image data; an input unit reading the image data in accordance with the reading conditions input via the operation unit; a first storage unit storing the image data read by the input unit; a second storage unit storing correspondence relation between the reading conditions and predicted data amount of the image data to be stored in the first storage unit; a data amount prediction unit predicting data amount of the image data to be read based on the reading conditions and the correspondence relation stored in the second storage unit; and a judgment unit judging whether to perform reading of the image data based on the predicted data amount and an available capacity of the first storage unit.

Abstract: An image forming apparatus and a print control method prevents a disadvantageous effect to a user due to print failure, before an image forming operation is started. The image forming apparatus includes an interface for connecting an external storage device to the image forming apparatus. Data stored in the external storage device is read via the interface and printed by the image forming apparatus. A memory usage at the time of printing the data is calculated based on a parameter obtained from various information about the data. The calculated memory usage and a memory capacity that is available in the image forming apparatus during printing are compared. An image forming operation for printing the data is controlled depending on a comparison result.

Abstract: In an image forming apparatus that receives print data from an external device and prints out the print data in response to a print command, a searching unit that searches, when new print data is received from the external device, a storage unit storing therein the print data that includes user information for previous print data that includes user information same as that of the new print data; and a notifying unit that sends, when the searching unit finds the previous print data, a notice to the external device saying that the previous print data is still present in the storage unit.

Abstract: An information processing apparatus is connected to a viewing apparatus through which a document is viewed. A view management part creates view information that indicates a viewed portion of the document where the document has been viewed. A document management part creates change information that indicates a changed portion of the document where the document has been changed. A creation part creates individual apparatus basis change information that indicates a coincident portion where the viewed portion indicated in the view information and the changed portion indicated in the change information are coincident with each other. A transmission part transmits the individual apparatus basis change information to the viewing apparatus through which the document was viewed.

Abstract: A document management apparatus delivers a to-be-delivered document to a delivery destination and collects information about browsing history of the document. The document management apparatus includes: a delivery-pattern determining unit; a delivery-information generating unit; a document delivery unit that delivers the document by transmitting the information of the delivery pattern to a network address of the delivery destination; and a browsing-history management unit that acquires information about browsing history. The delivery-pattern determining unit, when the type of the device is a type not adapted to a function of collecting information about browsing history, determines that a pattern for delivering a program for implementing collection of the information about browsing history together with the document as the delivery pattern.

Abstract: An image forming apparatus is disclosed. The image forming apparatus comprises an input unit through which a condition for reading image data of a document is input, a reading unit to read the image data under the reading condition, a first storage unit to store the image data read by the reading unit, a second storage unit to store information indicative of a relationship between the reading condition and an estimated volume of the image data to be stored in the first storage unit, a data volume estimating unit that estimates a volume of the image data to be read based on the reading condition and the information stored in the second storage unit, and a determining unit to determine whether to read the image data based on the estimated data volume and a volume of the image data that have already been stored in the first storage unit.

Abstract: An image processing apparatus, includes an image reading part configured to read an image of a document; and an image storage part configured to store image data read by the image reading part; wherein the image reading part includes a part configured to read a range of a part of the image of the document; the image processing apparatus further includes: a first calculating part configured to calculate image data of a one surface of the document based on a size of the image data of the range read by the image reading part; and a second calculating part configured to calculate the number of pages of image data of the document which can be stored by the image storage part based on the result of calculation by the first calculating part.

Abstract: A disclosed image forming apparatus includes: an image data input unit inputting image data; an image data storage unit storing the image data; a storage method change unit changing a storage method of the image data; an image data output unit outputting the image data; an available capacity detection unit detecting available capacity of the image data storage unit; an available capacity judgment unit judging whether the available capacity is not more than a predetermined value; and a storage method selection unit prompting selection of a storage method performed by the image data storage unit. When the available capacity is judged to be not more than the predetermined value, the storage method selection unit prompts the selection of a storage method, the storage method change unit changes the storage method of the image data, and the image data output unit outputs image data.

Abstract: In a disclosed image forming apparatus, an original is scanned and image data of the original are obtained. The data size of the image data corresponding to one page of the original is measured. The image data obtained are stored in or deleted from a memory. A storable number of pages of the original that can be stored in the memory is calculated based on the data size measured and available space in the memory. In response to the storable number of pages calculated being less than a total number of pages of the original, the image data of the original is successively stored in and deleted from the memory.

Abstract: In an image forming apparatus that receives print data from an external device and prints out the print data in response to a print command, a searching unit that searches, when new print data is received from the external device, a storage unit storing therein the print data that includes user information for previous print data that includes user information same as that of the new print data; and a notifying unit that sends, when the searching unit finds the previous print data, a notice to the external device saying that the previous print data is still present in the storage unit.

Abstract: An image forming apparatus and a print control method prevents a disadvantageous effect to a user due to print failure, before an image forming operation is started. The image forming apparatus includes an interface for connecting an external storage device to the image forming apparatus. Data stored in the external storage device is read via the interface and printed by the image forming apparatus. A memory usage at the time of printing the data is calculated based on a parameter obtained from various information about the data. The calculated memory usage and a memory capacity that is available in the image forming apparatus during printing are compared. An image forming operation for printing the data is controlled depending on a comparison result.

Abstract: An image forming device management system includes a plurality of image forming devices, a central service station which provides a maintenance service for the image forming devices, and a communication control unit which is connected to each of the image forming devices by a signal line, the communication control unit connecting one of the image forming devices to the central service station via a communication network. In the system, each of the image forming devices includes a message unit which outputs a signal line separation message when the image forming device has no signal from the central service station or the communication control unit over a predetermined period.

Abstract: An image forming device is disclosed that is able to prevent halt of operations due to full memory occupation, and prevent the full occupation of the memory. The image forming device includes a reading unit; an image data storage unit; a vacancy waiting unit that, when allocating a storage area for storing image data in the image data storage unit, waits until the storage size of a vacancy in the image data storage unit becomes greater than a predetermined value when allocation of the storage area fails; a failure processing unit that, when allocating the storage area for storing the image data in the image data storage unit, performs failure processing when allocation of the storage area fails; and a control unit that controls one of the vacancy waiting unit and the failure processing unit according to image forming conditions in the image forming device.

Abstract: An image forming apparatus is disclosed. The image forming apparatus comprises an input unit through which a condition for reading image data of a document is input, a reading unit to read the image data under the reading condition, a first storage unit to store the image data read by the reading unit, a second storage unit to store information indicative of a relationship between the reading condition and an estimated volume of the image data to be stored in the first storage unit, a data volume estimating unit that estimates a volume of the image data to be read based on the reading condition and the information stored in the second storage unit, and a determining unit to determine whether to read the image data based on the estimated data volume and a volume of the image data that have already been stored in the first storage unit.

Abstract: A disclosed image formation apparatus includes: an operation unit allowing input of reading conditions of image data; an input unit reading the image data in accordance with the reading conditions input via the operation unit; a first storage unit storing the image data read by the input unit; a second storage unit storing correspondence relation between the reading conditions and predicted data amount of the image data to be stored in the first storage unit; a data amount prediction unit predicting data amount of the image data to be read based on the reading conditions and the correspondence relation stored in the second storage unit; and a judgment unit judging whether to perform reading of the image data based on the predicted data amount and an available capacity of the first storage unit.

Abstract: A disclosed image forming apparatus includes: an image data input unit inputting image data; an image data storage unit storing the image data; a storage method change unit changing a storage method of the image data; an image data output unit outputting the image data; an available capacity detection unit detecting available capacity of the image data storage unit; an available capacity judgment unit judging whether the available capacity is not more than a predetermined value; and a storage method selection unit prompting selection of a storage method performed by the image data storage unit. When the available capacity is judged to be not more than the predetermined value, the storage method selection unit prompts the selection of a storage method, the storage method change unit changes the storage method of the image data, and the image data output unit outputs image data.