Minolta Camera Kabushiki Kaisha

Masaaki Oyabu

Masazumi Ito

Kadotaro Nishimori

Masaru Komura

Shigeru Sawada

Kaoru Tada

Munehiro Nakatani

Keiji Kusumoto

Yoshiaki Takano

Masamichi Sugiura

Hirofumi Hasegawa

Atsuyuki Tanaka

Takashi Noda

Hiroyuki Hanamoto

A laser beam scanning apparatus for laser printers, digital copying machines and the like in which a plurality of laser beams are combined, the composite laser beam is deflected in the main scan direction and a part of the deflected composite laser beam enters an optical path at an SOS signal sensor, then the composite laser beam is split and directed to different parts of an exposure member. Although there is some mixing of one beam split from the composite beam with unsatisfactorily separated beam, the unsatisfactorily separated beam is further separated in the optical path to the exposure member, thus effectively preventing the occurrence of image ghosts on the exposure member.

Laser beam scanning apparatus

An image forming apparatus includes various image forming units and a detachable paper cassette with data on its outer surface as to thickness, talc content, quality and the type of copy paper; the image forming units being controlled in accordance with the data when the cassette is changed. The apparatus also includes a device for marking a mark corresponding to the number of sheets of the copy paper used so as to detect the number of sheets remaining in the cassette.

Image forming apparatus

A display device for copying machines and the like and having separate two display sections for displaying conventional numeric information, the two display sections being commonly used for displaying non-constant numeric data. The non-constant numeric data is divided into high-order multiple columns and low-order multiple columns, so that each multiple columns is displayed in a separate displaying section, respectively.

Display device for copying machines and the like

According to the present invention, there are provided an apparatus and a method in which a full-color, original manuscript is optically scanned, the optical image is separated into three pirmary colors and the resultant image data is read, and then the image data thus read is outputted to a thermal printer, thereby generating a print for each color undergone the color separation. Namely, the manuscripts for effecting a printing operation with yellow, magenta, cyan, and black are created by use of an ink sheet. In other words, a correction is achieved to set the total of the areal ratios of yellow, magenta, cyan, and black in each pixel of the reproduced image to at most 100% (or the total of the numbers of dots for yellow, magenta, cyan, and black is set to be equal to at most the number of matrix elements), thereby achieving the object described above.

Apparatus and a method for generating manuscripts to reproduce a color

The present invention relates to a copying machine constructed so as to make maintenance, and the replacement period for components in particular, readily understandable. The apparatus includes a first counter which counts the number of copies reproduced and a second counter which counts the use frequencies of the component whose use frequencies are not countable by said first counter.

Copying apparatus with use frequency cancellation control

A method of image processing for sampling the concentration of each portion of an image in the unit of a picture element and for binarizing the concentrations of picture elements in the unit of a submatrix of predetermined size to obtain a bi-level image, being characterized in that the bi-level image is obtained from the concentrations having been sampled according to the steps as follows: (a) calculating the average of the concentrations of the picture elements at every submatrix to which the picture elements belong; (b) determining the number of elements in the submatrix to be treated as either one of black and white according to a predetermined relation with the average; (c) assigning elements in the submatrix as the elements to be treated as either one of black and white up to the number determined in the step (b) in the predetermined order of the concentration of each element.

Method of the image processing

The present invention relates to a copying apparatus capable of executing various copying operations. The copying apparatus has a first key for designating a format of an original document to be copied and a second key for designating a format of a copy to be formed and forms the image of the original document on a copy sheet in the designated format.

Copying apparatus with multiple copy modes

A copying apparatus including a recording module for forming an image on copy paper sheets fed from a sheet feeding portion and discharging the copy paper sheets to a sheet ejecting portion and a sheet processing module mounted detachably on the sheet ejecting portion. The sheet processing module includes a sheet cassette mounted detachably on the sheet processing module and the sheet feeding portion, a copy receiving tray and a changeover device for changing over to the sheet cassette or the copy receiving tray, a passage of the copy paper sheets discharged from the sheet ejecting portion.

Copying apparatus having a sheet refeeding device

A copying apparatus including a recording device for forming an image on copy paper sheets fed from a sheet feeding portion and discharging the copy paper sheets to a sheet ejecting portion, a sheet cassette mounted detachably on the sheet ejecting portion and the sheet feeding portion, a copy receiving tray, a mode selecting device for selecting first and second modes for accommodating the discharged copy paper sheets in the copy receiving tray and the sheet cassette, respectively, a cassette detecting device and a control device for controlling the mode selecting device in accordance with detection states of the cassette detecting device.

An apparatus for automatically issuing an identification card, such as a commutation ticket, airline ticket, credit card, driver's license or the like, which has information forming means having an information storage device for electromagnetically storing a coded information to be described on a web of paper to provide the identification card, a keyboard arrangement having a plurality of keys corresponding to the contents stored in the information storage device, a control device for selecting items from among the contents stored in the information storage device by operating the keyboard arrangement, and an information compiling device for compiling all of the coded information selected by the keyboard arrangement into a video signal information, a copying unit including a photoreceptor drum having the outer peripheral surface adapted to bear a latent image and an optical fiber tube which converts the video signal information into rays of light carrying the respective images of the coded information. The rays of light emitted from the optical fiber tube are projected onto the photoreceptor drum to form an image thereon, which image is electrostatically transferred onto the web of paper.

Growing community of inventors

Aichi, Japan

Masaaki Oyabu