Patents by Inventor Masahiro Tomosada
Masahiro Tomosada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5192971Abstract: An image processing apparatus having various interrupt-handling capabilities when image formation is interrupted. In one aspect, image formation is interrupted after completion of a predetermined number of image formations when the size of a recording material is indicated as a first size, and image formation is interrupted after a completion of a predetermined number of image formations when a recording material is indicated as a second size. In another aspect, a condition for image formation is selected whereby in the case the selected condition is prevented (e.g., recording on wrong-sized paper), the condition is stored, and after the image formation has commenced, a stop command is inhibited and stored. In another aspect, data concerning image information is entered, the entered data is displayed, and images are formed sequentially in accordance with the data whereby the formation of the images may be interrupted and the remaining number of image formations may be stored and displayed.Type: GrantFiled: February 7, 1990Date of Patent: March 9, 1993Assignee: Canon Kabushiki KaishaInventors: Katsuichi Smimizu, Osamu Sawamura, Shunichi Masuda, Masahiro Tomosada, Hisashi Sakamaki
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Patent number: 5008712Abstract: This invention relates to a copying apparatus with variable magnification capability, wherein the reduced and enlarged copying operations are achieved by varying the speed of a photosensitive drum, while controlling an optical system. The size of a copying material is compared with the size of a reproduced image at a selected magnification, and the comparison is displayed. Also, the size of copy material and the selected magnification can be changed during an interrupt process, and the scanning stroke and timing for image formation are controlled differently for different magnifications. The size of a copying material is compared with the size of a reproduced image at a selected magnification, and the comparison is displayed. Also, the size of copy material and the selected magnification can be changed during an interrupt process, and the scanning stroke and timing for image formation are controlled differently for different magnifications.Type: GrantFiled: November 16, 1989Date of Patent: April 16, 1991Assignee: Canon Kabushiki KaishaInventors: Tsuneki Inuzuka, Katsuyoshi Maeshima, Masahiro Tomosada
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Patent number: 4984020Abstract: A copying apparatus for optically reading images on the same or different originals and copying them into an arbitrary copy area on a copy paper has an area designating function and includes an image area designating apparatus to designate an arbitrary area on the original; a multiple transfer apparatus to multiple transfer the images in a plurality of image areas designated by the image area designating apparatus; a copy area designating apparatus to designate an arbitrary area on the copy paper and to copy the images in the image areas into the copy area designated; and a color designating apparatus to respectively designate the colors for a plurality of image areas designated by the image area designating apparatus. The images in the image areas are multiple transferred into the copy area by the multiple transfer apparatus on the basis of the designated colors.Type: GrantFiled: May 23, 1989Date of Patent: January 8, 1991Assignee: Canon Kabushiki KaishaInventors: Hideki Adachi, Masahiro Tomosada, Tadashi Suzuki, Naoyuki Ohki
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Patent number: 4937626Abstract: An image forming apparatus includes a developing unit storage device including a plurality of storage sections capable of storing developing units and a first detection unit for detecting the presence/absence and types of the developing units in the plurality of storage sections, an image forming device which includes a second detection unit for detecting the presence/absence and a type of a developing unit in the image forming device, and can form an image on a recording material using the developing unit conveyed from the developing unit storage device, a communication device for causing the developing unit storage device and the image forming device to exchange data associated with the presence/absence and types of the developing units, a first display device for displaying the presence/absence and types of the developing units on the basis of a detection result by the first detection unit and the data transmitted from the image forming device by the communication device, and a second display device for diType: GrantFiled: May 2, 1989Date of Patent: June 26, 1990Assignee: Canon Kabushiki KaishaInventors: Hideto Kohtani, Tadashi Suzuki, Naoyuki Ohki, Isamu Sato, Takahiro Ushiro, Masahiro Tomosada
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Patent number: 4922296Abstract: An image reproducing apparatus with or without an ADF has an optical system for scanning an original, a developing unit, a fixing unit, a differential amplifier, and a microcomputer. Original image density can be measured properly in any mode of the apparatus. The image is reproduced to have optimal density by a lamp control voltage from the differential amplifier. Toner deficiency or the like can be indicated with a few number or displays and/or indicators. Upon detection of toner deficiency or the like, the current copying cycle is completed first and the apparatus is stopped. The copying operation can be resumed after the toner deficiency or the like is eliminated.Type: GrantFiled: February 13, 1989Date of Patent: May 1, 1990Assignee: Canon Kabushiki KaishaInventors: Yukio Kasuya, Masahiro Tomosada, Hideki Adachi
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Patent number: 4916489Abstract: There is disclosed an image forming apparatus capable of superposing two deesired images, by erasing a part of a latent image with light-emitting elements and forming another image with same light-emitting elements.Type: GrantFiled: March 2, 1989Date of Patent: April 10, 1990Assignee: Canon Kabushiki KaishaInventors: Hiroaki Takeda, Hideki Adachi, Tadashi Suzuki, Naoyuki Ohki, Masahiro Tomosada
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Patent number: 4897778Abstract: There is provided a motor control device comprising a motor; an apparatus for entering the number of revolutions of the motor; a detector that detects the number of revolutions of the motor; and a microcomputer for entering the output from the detector and a controlling the motor according to predetermined programs, wherein the microcomputer comprises a counter to which a count value is set according to a circuit from the input to form a reference frequency signal and a circuit for forming a phase error signal according to the reference frequency signal and the output of the detector and outputs a signal for driving the motor based on the phase error signal.Type: GrantFiled: March 25, 1988Date of Patent: January 30, 1990Assignee: Canon Kabushiki KaishaInventors: Kazuki Miyamoto, Yutaka Komiya, Masato Ishida, Shinichi Nakamura, Masanori Miyata, Masayuki Hirose, Masahiro Tomosada, Hideki Adachi
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Patent number: 4872035Abstract: There is disclosed an image forming apparatus capable of controlling the image forming conditions in different modes according to the magnification of the image to be formed, or according to the process speed.Type: GrantFiled: February 2, 1988Date of Patent: October 3, 1989Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Miyake, Seiji Sagara, Takaji Yonemori, Tsuyoshi Watanabe, Masayoshi Takahashi, Koji Suzuki, Yutaka Komiya, Masahiro Tomosada, Hideki Adachi, Masayuki Hirose, Masanori Miyata
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Patent number: 4870447Abstract: There is a multi-color copying apparatus having image processing functions which can easily designate arbitrary areas when the trimming or masking is executed. This apparatus comprises: an area designating device to designate the first area of the original; a first developing device to develop the image of the first area in the first color; a second developing device to develop the image of the second area in the second color; and a control circuit for making the first developing device operative without making the second developing device operative in accordance with the designation of the first area and, after completion of the development of the image of the first area, making the second developing device operative without making the first developing device operative.Type: GrantFiled: January 3, 1989Date of Patent: September 26, 1989Assignee: Canon Kabushiki KaishaInventors: Nobutoshi Yoshida, Nobuyuki Miyake, Atsushi Takagi, Takashi Saito, Tadashi Suzuki, Naoyuki Ohki, Masahiro Tomosada, Hideki Adachi, Hiroaki Takeda
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Patent number: 4862219Abstract: There is a multi-color copying apparatus having image processing functions which can easily designate arbitrary areas when the trimming or masking is executed. This apparatus comprises: an area designating device to designate the first area of the original; a first developing device to develop the image of the first area in the first color; a second developing device to develop the image of the second area in the second color; and a control circuit for making the first developing device operative without making the second developing device operative in accordance with the designation of the first area and, after completion of the development of the image of the first area, making the second developing device operative without making the first developing device operative.Type: GrantFiled: March 10, 1988Date of Patent: August 29, 1989Assignee: Canon Kabushiki KaishaInventors: Nobutoshi Yoshida, Nobuyuki Miyke, Atsushi Takagi, Takashi Saito, Tadashi Suzuki, Naoyuki Ohki, Masahiro Tomosada, Hideki Adachi, Hiroaki Takeda
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Patent number: 4839698Abstract: An image processing apparatus including a plurality of process devices for processing an image. A first control device is provided for controlling at least a first one of the plural process devices in accordance with a control program for an image process, and a second control device is provided for controlling at least a second one of the plural process devices in accordance with the control program. Furthermore, a reset device is provided for detecting a failure of the first and second control device in accordance with an output from one of the two control devices and for resetting both of those two devices.Type: GrantFiled: August 26, 1987Date of Patent: June 13, 1989Assignee: Canon Kabushiki KaishaInventors: Tsuneki Inuzuka, Katsuyoshi Maeshima, Masahiro Tomosada
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Patent number: 4816868Abstract: An image forming apparatus in which copying operations are controlled according to a program sequence. The apparatus has an input unit for entering copying instructions and sequence signals, a control unit for controlling active loads in response to signals from the input unit, and logic circuits connected to the control unit for controlling the active loads. The input unit can be used to input a specific instruction signal to set a predetermined data value in a data memory of the control unit, to instruct that a portion of the control program be omitted to permit the apparatus to operate without actually producing an image. Alternatively, or in addition to such feature, the control unit may have a sequence control program which omits specific malfunction detection functions, that program being used to permit performance of a test operation of the apparatus without the need for actually consuming recording sheets or other materials in the test.Type: GrantFiled: March 17, 1987Date of Patent: March 28, 1989Assignee: Canon Kabushiki KaishaInventors: Katsuichi Shimizu, Osamu Sawamura, Shunichi Masuda, Masahiro Tomosada, Hisashi Sakamaki
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Patent number: 4803520Abstract: An electrophotographic apparatus capable of synthesizing two images with a cleaner boundary. Two images are synthesized by forming two images in respectively designated areas, and cleaner boundary is obtained by erasing any image in the boundary zone of these two images.Type: GrantFiled: October 31, 1985Date of Patent: February 7, 1989Assignee: Canon Kabushiki KaishaInventors: Masahiro Tomosada, Hiroshi Ogawa, Yoshikuni Tohyama, Hideki Adachi, Tadashi Suzuki, Naoyuki Ohki
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Patent number: 4769673Abstract: An image scanning apparatus has a reciprocating member for scanning a document, a first motor for driving the reciprocating member, a first detection circuit for detecting the speed of the first motor, a first control circuit associated with the detection circuit for rotating the motor at a speed to scan the document at a speed determined by a magnification factor, a recording medium, a second motor for driving the recording medium, a second detection circuit for detecting the speed of the second motor and a second control circuit associated with the second detection circuit for rotating the second motor at a speed determined by the magnification factor.Type: GrantFiled: September 26, 1984Date of Patent: September 6, 1988Assignee: Canon Kabushiki KaishaInventors: Masahiro Tomosada, Katsuyoshi Maeshima, Tsuneki Inuzuka, Hisashi Sakamaki
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Patent number: 4745443Abstract: An analog copying apparatus for optically exposing an original and copying it onto an arbitrary copy area on a copy paper has an area designating function and comprises: an image area designating apparatus to designate an arbitrary area on the original; a copy area designating apparatus to designate an arbitrary area on the copy paper; and copying means for copying the image in the image area into the copy area. This copying apparatus further has: an original moving apparatus to move the original on an original plate; a lens moving apparatus to move a lens provided in the optical path in an arbitrary direction; a cassette moving apparatus to move a cassette in which the copy papers are enclosed; and a resist control apparatus to control the resist timing, wherein the image in the image area is copied onto the copy area by means of at least one of or a combination of a plurality of these apparatuses.Type: GrantFiled: December 22, 1986Date of Patent: May 17, 1988Assignee: Canon Kabushiki KaishaInventors: Hideki Adachi, Masahiro Tomosada, Tadashi Suzuki, Naoyuki Ohki
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Patent number: 4743944Abstract: An image processing apparatus includes a process unit for reproducing an image on a document onto a recording medium and a detection circuit for detecting the status of the document image. A control circuit controls the process unit to reproduce the document image at a predetermined magnification. The status of the document may include the area of the image on the document, whether the document image is adjacent an edge of the document, the location of the edge of the document, or the disposition of the document. The magnification of reproduction of the document image is then controlled by the control circuit in accordance with the detection of that particular status. For example, if it is determined that the document image is adjacent the edge of the document, reproduction is controlled to be at reduced magnification.Type: GrantFiled: August 17, 1987Date of Patent: May 10, 1988Assignee: Canon Kabushiki KaishaInventors: Masahiro Tomosada, Hideki Adachi, Tadashi Suzuki, Naoyuki Ohki, Masanori Miyata
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Patent number: 4697916Abstract: An image forming apparatus comprises latent image forming means for forming a latent image on a photosensitive medium, reference latent image forming means for forming a reference latent image adjacent to the latent image, a plurality of light-emitting means disposed at intervals of a pitch D equal to or smaller than the width l of the reference latent image, and means for drivingly controlling the plurality of light-emitting means in accordance with the size of the latent image.Type: GrantFiled: June 5, 1986Date of Patent: October 6, 1987Assignee: Canon Kabushiki KaishaInventors: Yutaka Komiya, Masahiro Tomosada, Shinichi Nakamura, Masanori Miyata, Masayuki Hirose, Hideki Adachi
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Patent number: 4674863Abstract: An improved image forming apparatus for controlling image density at an optimum level. The image forming apparatus has a plurality of detectors for detecting an original image density. The detectors have mutually different detecting characteristics, wherein image forming conditions are controlled based on the outputs of the detectors. Control may be effected in accordance with a comparison of the detected values, and in accordance with a selected operation mode.Type: GrantFiled: August 6, 1984Date of Patent: June 23, 1987Assignee: Canon Kabushiki KaishaInventors: Masahiro Tomosada, Masanori Miyata, Hideki Adachi, Yukio Sato
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Patent number: 4641954Abstract: An image forming apparatus has a copying machine operable in a single side copy mode and a double side copy mode, a processor for commanding an interrupting copy operation in the double side copy mode, and a bin for storing, in a non-sort mode, the double-side copied papers fed from the copying machine in the interrupting copy operation.Type: GrantFiled: August 13, 1984Date of Patent: February 10, 1987Assignee: Canon Kabushiki KaishaInventors: Masanori Miyata, Yutaka Komiya, Shinichi Nakamura, Masayuki Hirose, Hideki Adachi, Masahiro Tomosada
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Patent number: 4625156Abstract: A device for controlling plural loads with phase locked loop control method by means of reference signals of different phases in order to avoid peak in electric power consumption.Type: GrantFiled: October 24, 1983Date of Patent: November 25, 1986Assignee: Canon Kabushiki KaishaInventors: Yutaka Komiya, Masahiro Tomosada, Shinichi Nakamura, Masanori Miyata, Hideki Adachi, Masayuki Hirose