Canon Kabushiki Kaisha

Satoshi Egawa

Shigeru Ueda

Satoshi Nagata

Akihiro Nakamura

Junichi Kimizuka

Shinichiro Maekawa

Yutaka Tokura

Yoichi Toyokura

Yoji Kaneko

Soya Endo

Masaki Unishi

Hitoshi Machino

Akira Nakaya

Hisao Urata

Yuichi Higuchi

Kozo Matsumoto

Masayoshi Suzuki

If an optional paper feeding deck or furnisher, or paper stacker, is connected to an image forming apparatus (such as a printer), such optional devices are to be controlled by connecting the paper conveyance control apparatus to control those options. Such an image forming apparatus has a video controller to convert the printer language sent from a high-order device such as a host computer, into a bit map data and a printer engine to print the bit map data. Such a paper conveyance control apparatus, being electrically connected to the video controller, has a memory to be shared with the video controller. The video controller writes the job schedule in the shared memory. The paper conveyance control apparatus controls the optional device according to the written job schedule.

Apparatus to control optional paper conveyance device and image processing apparatus using the same

If an optional paper feeding deck or furnisher, or paper stacker, is connected to an image forming apparatus (such as a printer), such optional devices are to be controlled by connecting the paper conveyance control apparatus to control those options. Such an image forming apparatus has a video controller to convert the printer language sent from a high-order device such as a host computer, into bit map data and a printer engine to print the bit map data. Such a paper conveyance control apparatus, being electrically connected to the video controller, has a memory to be shared with the video controller. The video controller writes the job schedule in the shared memory. The paper conveyance control apparatus controls the optional device according to the written job schedule.

A radiating-plate mounting structure for mounting a radiating plate on a semiconductor integrated circuit installed on a printed circuit board is arranged to have a pin disposed on the printed circuit board in the neighborhood of the semiconductor integrated circuit and to fix the radiating plate to the semiconductor integrated circuit by pressing the radiating plate with a spring member using a lock part of the pin as a fulcrum. At this time, the middle part of the radiating plate can be reliably fixed to the semiconductor integrated circuit by a hole provided in the spring member for allowing a fin part of the radiating plate to escape through the hole. The structural arrangement effectively eliminates the possibility of having the radiating plate caused to peel off by some impact inflicted thereon.

Structure for mounting radiating plate

A printing apparatus is provided with a main body including a video controller, having video signal generation device for generating a video signal from image information based on a recording command from an external apparatus and control device, and with a supervisory controller including optional unit control device for controlling at least an optional unit connectable to the main body. The video controller includes a process time informing device for informing the supervisory controller of an image development process time, and the supervisory controller includes a paper transport time memory for storing the paper transport time from the optional paper feed source to the entrance of the printing apparatus, a comparator for comparing the process time informed by the process time informing device with the paper transport time stored in the paper transport time memory, and a paper feed source changing device for changing the paper feed source in case the comparator identifies that the process time is shorter. The supervisory controller effects change of the order of process, determination of the paper feed unit, continuation of the printing process in case of paper jamming. There is provided a printing apparatus for printing text data received from an external apparatus, including paper feed units and paper ejecting units provided as standard components and paper feed units and paper ejecting units connectable as optional units, wherein an optimum combination is selected among the usable ones among the above-mentioned paper feed and ejecting units.

Printing apparatus and control device for option equipment connected

When an optional unit (40, 50) is mounted, a video controller (27) serving as main control unit sends various control commands to a supervising controller (101) through an interface (114). The supervising controller (101) controls an engine controller (26) through an interface (29) while controlling the optional unit (40, 50) in accordance with the received control commands, thereby recording an image. When no optional unit is mounted (when the optional units 32, 40, 50 are absent), the video controller (27) directly controls the engine controller (26) through an interface (28), thereby recording an image. With the above arrangement, the supervising controller (101) serving as a control unit associated with optional units can be attached/detached.

Image recording apparatus and option control apparatus

An outputting apparatus comprises: a changing circuit to change a bit map font in accordance with a resolution of an outputting mechanism in the case where a resolution of the bit map font to be generated differs from the resolution of the outputting mechanism; a developing circuit to develop dot pattern information of the bit map font changed by the changing circuit; and an outputting device to output the dot pattern information developed by the developing means. The changing circuit executes a smoothing process by interpolating one dot into a zigzag portion of a character pattern. The bit map font is a down-load font.

Outputting method and apparatus

A recording data processor comprises a first bit map memory for storing recording data, a second bit map memory for storing color data representing a reproduction color of the recording data stored in the first bit map memory, for each recording data, and a generation circuit for generating recording data for each color based on the recording data fetched from the first bit map memory and the color data fetched from the second bit map memory.

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Kawasaki, Japan

Satoshi Egawa