Abstract: An image processing apparatus enables efficient access to image information and increases processing speed. A reading unit generates addresses of a plurality of pixels in a rectangular region of an image stored in an external storage unit with reference to an arbitrary pixel in the rectangular region based on the address of the arbitrary pixel in the external storage unit and the number of pixels in a main scan direction. The reading unit then reads the pixels of the rectangular region successively with reference to the generated addresses of the plural pixels in the rectangular region.

Abstract: An information recording/reproducing apparatus includes a use condition determination part that reproduces a specific area on a rewritable recording medium and determines whether an unused area exists. A recording linear velocity changing part changes a recording linear velocity in a radial direction of the medium. A recording clock cycle changing part changes a recording clock cycle in accordance with a change in the velocity. A test writing part performs test writing with a different recording power for each step. An optimum recording power determination part reproduces test-written information and determines an optimum recording power for a recording linear velocity in test writing based on a characteristic value of a reproduction signal. When the unused area exists, test writing is performed thereon at a recording linear velocity the same as that in recording, the optimum recording power for the area is determined, and information is recorded with the optimum recording power.

Abstract: An optical disk device that records and reproduces information on/from a recordable optical disk is provided.

Abstract: An information recording/reproducing apparatus includes a use condition determination part that reproduces a specific area on a rewritable recording medium and determines whether an unused area exists. A recording linear velocity changing part changes a recording linear velocity in a radial direction of the medium. A recording clock cycle changing part changes a recording clock cycle in accordance with a change in the velocity. A test writing part performs test writing with a different recording power for each step. An optimum recording power determination part reproduces test-written information and determines an optimum recording power for a recording linear velocity in test writing based on a characteristic value of a reproduction signal. When the unused area exists, test writing is performed thereon at a recording linear velocity the same as that in recording, the optimum recording power for the area is determined, and information is recorded with the optimum recording power.

Abstract: An optical disk device that records and reproduces information on/from a recordable optical disk is provided.

Abstract: An optical disk device that records and reproduces information on/from a recordable optical disk is provided.

Abstract: An optical disk device that records and reproduces information on/from a recordable optical disk is provided.

Abstract: An image forming apparatus includes a laser beam scanning unit for scanning a recording medium in synchronism with a writing clock signal so that a dotted image is formed on the recording medium, a counter for carrying out a count operation in synchronism with the writing clock signal so that one count value or a plurality of count values determining a scanning area is/are obtained, a first controller for activating or inactivating the laser beam scanning unit based on one or the plurality of count values, a dip switch unit for specifying a dotting density, a second controller for controlling the frequency of the writing clock signal and/or a speed of scanning; and a changing unit for changing one or the plurality of count values, which should be obtained by the counter, based on the dotting density specified by the dip switch unit, so that the position of the scanning area with respect to the recording medium is constant even if the frequency of the writing clock signal and/or the scanning speed are changed

Abstract: A modular type image forming system includes a laser printer main unit and a plurality of optional units, such as a both side processing unit, a large quantity paper feeding unit and a mail box unit, each of which is operatively coupled to said main unit through a commonly usable optical fiber cable through a commonly usable connector. Each unit has its own CPU and serial communications between the CPUs of different units may be carried out through the optical cables. The CPU of the main unit may determine the identity of each of the optional units connected thereto through such communications. The main unit also includes an interface circuit through which the main unit is operatively coupled to each of the optional units. The interface circuit includes a port selector which establishes a connection pattern between the main and optional units in accordance with the identity information of each of the optional units connected.

Abstract: A modular type image forming system includes a laser printer main unit and a plurality of optional units, such as both side processing unit, a large quantity paper feeding unit and a mail box unit, each of which is operatively coupled to said main unit through a commonly usable optical fiber cable through a commonly usable connector. Each unit has its own CPU and serial communications between the CPUs of different units may be carried out through the optical cables. The CPU of the main unit may determine the identity of each of the optional units connected thereto through such communications. The main unit also includes an interface circuit through which the main unit is operatively coupled to each of the optional units. The interface circuit includes a port selector which establishes a connection pattern between the main and optional units in accordance with the identity information of each of the optional units connected.

Abstract: An image forming system comprises one or a plurality of image forming apparatuses and a host system coupled thereto. Each image forming apparatus is provided with a control part for reading out status information on the image forming apparatus at an arbitrary time. The obtained status information may be displayed or printed at the image forming apparatus and/or supplied to the host system.