Fuji Xerox Co., Ltd.

Svay Leng

Masato Tsuji

Koichiro Shinohara

Fumio Nakaya

Masao Seki

Koji Aikawa

Haruhiko Moriguchi

Masami Kurata

Toshiharu Inui

Hiroyuki Saitoh

Takashi Ohmori

Hiroyuki Kataoka

Hitoshi Funato

Takashi Omori

Hisao Nakajima

Saburo Suganuma

Noriyoshi Ishikawa

Norihiko Koizumi

Haruhiko Takahashi

Yasuo Katou

Yasuo Katoh

An image processing system which reads an image on an original document every pixel by a scanner, processes the read image data, and outputs the processed image data. The image processing system includes a system for recognizing a circular image of a specific color. The recognizing system includes a specific color detecting unit for detecting a specific color on an image on an original document; a first image detecting unit for detecting, in the image detected by the specific color detecting unit, images of the specific color at positions spaced from each other by a first distance corresponding to a diameter of a circle on a line extending in a fast scan direction; a second image detecting unit for detecting intersections of the circle having the diameter equal to the first distance and a line separated by a predetermined distance from a center of the circle in a slow scan direction when the specific color images are detected by the first image detecting unit; and a specific color image determining unit for determining that a contour containing the images of the specific color, detected by the three detecting units, is circular on the basis of the detection of a pitch line of a second distance by the second image detecting unit.

Image processing system

An image processing system which reads, in pixel units, an image on an original document using a scanner, processes the read image data, and outputs the processed image data. The image processing system includes a system for recognizing a circular image of a specific color. The recognizing system includes a specific color detecting unit for detecting a specific color on an image on an original document; a first image detecting unit for detecting, in the image detected by the specific color detecting unit, images of the specific color at positions spaced from each other by a first distance corresponding to a diameter of a circle on a line extending in a fast scan direction; a second image detecting unit for detecting intersections of the circle having the diameter equal to the first distance and a line separated by a predetermined distance from a center of the circle in a slow scan direction when the specific color images are detected by the first image detecting unit; and a specific color image determining unit for determining that a contour containing the images of the specific color, detected by the three detecting units, is circular on the basis of the detection of a pitch line of a second distance by the second image detecting unit.

Image processing system for selectively reproducing documents

A two-color copying machine records an image on a recording sheet in two colors such as red and black by using thermally transferable red and black inks on ink donor sheets. The two-color copying machine includes a platen for supporting an original to be copied, a scanner unit movable reciprocally with respect to the platen for reading the original and for generating an image signal for each line which is separated into two single color image signals, each corresponding to one of the two colors, a pair of thermal heads each for selectively generating thermal pulses in response to the image signal from the scanner unit, an ink donor sheet supply assembly for supplying the thermal heads with respective ink donor sheets coated with thermally transferable inks of different colors, respectively, which can be fluidized or sublimated upon being heated, a recording sheet supply assembly for supplying a recording sheet in the vicinity of the thermal heads, a recording sheet contacting assembly for bringing the supplied recording sheet into intimate contact with a heating region of each of the thermal heads with the ink donor sheet interposed between a thermal head and an ink donor sheet, a recording sheet peeling assembly for peeling the recording sheet off the ink donor sheets after the image has been recorded on the recording sheet, and a discharge assembly for discharging the peeled recording sheet.

Two-color copying machine

A copier capable of producing both color images and monochrome images is disclosed, which comprises a platen for mounting thereon a manuscript, a scanner unit adapted to reciprocate relative to the platen and generate image signals divided in three primary colors by reading the manuscript for each line or for each set of a plurality of lines, four thermal heads for receiving image signals and, in response thereto, selectively actuating heat generation elements, means for supplying the thermal heads with ink donor films of four colors including black, and means for effecting thermal transfer printing on record paper.

Color copier

A high speed copying machine transports a sheet from a sheet stack to a stop gate at very high speed, and then transports the sheet from the stop gate to a transfer point on the drum at a speed matching the peripheral speed of the drum. The time required to rotate a point on the drum from the exposure position to the transfer point is actually greater than the time required to transport a sheet from the sheet stack to the stop gate, which is very near the transfer point.

High speed copying machine

In a thermal printing utilizing a heat sensitive printing paper or an ink donor film, sticking of a heat sensitive color developing layer on the printing paper or a substrate film of the ink donor film to a thermal head is prevented by supplying a predetermined amount of electric energy to heat generating elements of the thermal head during time intervals between successive printing heat generations in the heat generating elements. For this purpose, warming pulses generated from a warming pulse generating circuit are applied during the time intervals to the heat generating elements for warming the same.

Thermal printing method and apparatus

According to the present invention, appearance of a white space line produced on record can be prevented, and such white space line is produced due to excessive travel of a recording paper in the case when recording information to be inputted is interrupted. In the present invention, for the sake of attaining such advantageous effect as mentioned above, either additional recording for 1 line is carried out on the basis of the recording information of the last recording, or additional recording for 1 line is effected on the basis of the recording information of the last recording or the recording information which was newly received during a period after the following recording information was received and before the recording paper starts travel thereof for recording in the case when a period of time from the last recording for 1 line to reception of the following recording information exceeds an expected value.

Thermal recording device

A roll sheet supplying mechanism for a recording device is disclosed. The mechanism allows for a roll sheet to be rolled into a recording device in a simple and convenient manner. The mechanism is comprised of a shaft having tapered end. The shaft supports the roll sheet and is positioned such that one end can be inserted within a fixed receiving portion while another end can be received within a movable receiving portion. A roll sheet is positioned on the shaft and the shaft is positioned on a support member such that the ends of the shaft are in alignment with the fixed end portion and the movable end portion. The movable end portion is retracted and may be locked into an open retracted position. The movable end portion is then released and is forced towards a shaft end by a biasing member. When the movable receiving portion contacts the tapered end of the shaft the shaft end is forced into the movable receiving end portion and consequently forces the other tapered end of the shaft into the fixed end receiving portion.

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Kanagawa, Japan

Svay Leng