Ricoh Company, Ltd.

Masashi Kuno

Tatsuo Tani

Takashi Tsutsumi

Takeyoshi Sekine

Akira Hirose

Toyoo Okamoto

Hirobumi Yoshino

Akira Midorikawa

Kazuhiro Ando

Yoshiyuki Tanimoto

Masayuki Shinada

Masami Higuchi

Yoshihiro Nakashima

Shozo Miyawaki

Mikio Miura

Masaji Ito

Kouichi Kanaya

A method controls a display for a copying machine including a device having two-dimensional dot displaying device in which displaying layers for at least two colors of red and green are provided and capable of displaying at least four colors red, green, white, and black by combining the displaying layers. The method is made up of the steps of providing storing device including a memory space which corresponds to a display of the dot displaying device and in which addresses are sequentially assigned. The system then calculates display information of one-dimensional absolute address position information in response to display information in which coordinate information is made into two-dimensional coordinate information. This display information is stored in the storing device, and then supplied to the displaying device so as to be displayed. The display device is primarily a dot type device.

Method of controlling a display and a display control device for a

A method and apparatus for controlling copying operation modes of a copier having a paper feeding device. In a data sheet information of a desired copying operation mode is inputted in advance. The data sheet is first fed to a copying section in the copier before original papers and the information is detected. The following original papers are processed under the desired copying operation mode designated by the information in the data sheet.

Method and apparatus for controlling copying operation

A copier with an image editing function which extracts desired areas of a plurality of documents in an analog fashion and allows them to be edited on a single transfer sheet. The copier includes an erasing device for selectively erasing an image provided on a photoconductive element, a detaining device for temporarily detaining a transfer sheet, an image inputting device for inputting an image of an original document, and a display device for displaying an input condition. Desired areas of documents are specified and edited with the aid of displays and then copied. Where the specified areas of the documents overlap each other, one of them having priority over the other or a selected one of them is copied. The number of areas to be edited is open to choice. The specified areas are entered through editing keys and usual ten keys. The erasing device is driven by a controller which is responsive to digital signals which are derived from position setting knobs associated with two perpendicular scales. Different colors are used to in correspondence with specified areas or documents. After copying, sheets are stocked in different positions on the basis of an edited content. An image portion inside or outside a specified area is selectable.

Copier with image editing function

In a bias device for a copying machine, the surface potential of the photo-sensitive member is detected and stored, a bias voltage is obtained by superposing a certain potential on the potential thus stored, the surface potential of an electrode confronting the photo-sensitive member is stored in a non-image period occurring with the photo-sensitive member, and the bias voltage is applied to the electrode in an image development period occurring with the photo-sensitive member, whereby troubles due to the residual voltage of the photo-sensitive member are effectively overcome.

Bias device for a copying machine

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Tokyo, Japan

Masashi Kuno