Fuji Xerox Co., Ltd.

Hiroaki Ishizawa

Hisao Suzuki

Kazuyasu Sasuga

Akihiko Sato

Masato Toho

Kiyoshi Ishikawa

Yoshiharu Namba

Akiyoshi Inoue

Yuji Akiyoshi

An image forming method for use in image forming apparatus including on the right surface thereof a discharge opening connectable with a post-processing device, the image forming method comprising the steps of:

Image forming apparatus and image forming method used in the same

The image processing method and related apparatus of the present invention contemplates the steps of setting a two-dimensional image filter to center around a subject picture element switching the coefficient of the two-dimensional image filter on a time-sharing basis during the time an image signal corresponding to one picture element is transferred, taking out a plurality of filter outputs relative to the image signal of the subject picture element, comparing the plurality of filter outputs with each other to identify which one of the character and half tone areas the subject picture element belongs to, and subjecting the image to individual process on an area basis. Accordingly, it is possible to distinguish between the character and half tone areas efficiently with a simple arrangement and simultaneously output an image of good quality.

Image processing method

A dynamic memory device comprises a dynamic memory circuit, an input buffer circuit for temporarily storing data each time it is received from a source external to the device; an output buffer circuit for temporarily storing data each time it is read out from the dynamic memory circuit and for outputting the stored data in a unit of a predetermined number of words each time a request for reading is made; and a control circuit for controlling the input and output buffer circuits so that reading and writing operations can be performed independently of a refreshing operation.

Dynamic memory device

Growing community of inventors

Kanagawa, Japan

Hiroaki Ishizawa