Canon Kabushiki Kaisha

Shunichi Masuda

Katsuichi Shimizu

Toshiaki Yagasaki

Hisashi Sakamaki

Takashi Nakahara

Masahiro Tomosada

Kenjiro Hori

Satoshi Akiyama

Toshio Yoshimoto

Yoshimi Kuramochi

Osamu Sawamura

Koji Suzuki

Yukio Sato

Yoshikazu Yokomizo

Hatsuo Tajima

Tetsuo Saito

Yoshihiro Kawatsura

Yukio Kasuya

Naoki Iwami

Hiromi Kataoka

Kazuma Yamamoto

Hiromitsu Hirabayashi

Makoto Takeuchi

Masahiro Goto

Hiroshi Hashimoto

Kimio Nakahata

Masaharu Ohkubo

Hideyuki Yano

Junichi Kato

Akihiro Nomura

Shigeru Yoshimura

Yukihiro Ohzeki

Koichi Hiroshima

Shinichi Tsukida

Kimiaki Hayakawa

Takahiro Inoue

Akio Noguchi

Katsushi Furuichi

Koichi Suwa

Yasuhiro Nakata

Naomi Takahata

Yukio Satoh

Katsuichi Smimizu

An image processing apparatus comprises a memory for storing image data to be formed into an image, a memory holding unit for holding the content of the memory, and a control unit for stopping the memory holding operation by memory holding unit during a stand-by period of the image forming operation.

Image processing apparatus

An image forming apparatus comprises a data receiver for receiving encoded character or graphic information in the unit of a page from the outside; a pixel converter for converting the encoded character or graphic information into pixel information; an image forming device for forming an image on a recording medium based on the pixel information; and a feeder for feeding the recording medium to said image forming device. In the apparatus, the feeder is adapted to feed the recording medium to a predetermined position prior to the completion of pixel conversion of a page by the pixel converter.

Image forming apparatus with feeder control based on pixel conversion

A printing or copying apparatus of a type provided with a recording medium, operable device for forming an image on the recording medium, device for operating a first signal required for the timing operation of the operable device, keys for instructing to start or stop the execution of image formation, first control device controlling the operable device in accordance with the first signal, and which comprises a memory for storing a program for operation control of the operable device for image formation, and second control device for controlling the first control device in accordance with the key instructing device for controlling the execution of image formation and for controlling at least one of the operable devices, and which comprises a memory for storing a program for operation control of the first control device.

Image forming device

Provided is an image processing apparatus adapted to inform the user of the time that is required to elapse before an image forming command can actually be executed, thereby eliminating any anxiety that the user might otherwise experience. Specifically, there is provided an image processing apparatus for forming an image by analyzing and decoding a received printing signal and then storing the signal in a page memory in the form of code data, and converting the the code data stored in the page memory into a bit image, including a processing-time calculating unit for calculating time, which is required for conversion to the bit image, based upon analysis of the inputted printing signal, and an informing unit for informing a user of the time calculated by the processing-time calculating unit, wherein the processing-time calculating unit further calculates preparation time required for forming the image from the bit image.

An image forming apparatus, which is capable of obtaining high quality images, having a recording member on which a latent image is formed, a charging voltage generating portion which is positioned in contact with the recording member for the purpose of applying charging voltage containing an AC component to the recording member and from which said charging voltage is supplied, an application device for applying an AC component having a frequency, which is different from that of the AC component of the charging voltage, to the recording member, an electric current value control circuit for detecting an output AC value of the charging voltage generating portion so as to make the output AC value to be a predetermined value, and an erroneous operation preventing circuit for preventing an erroneous operation of the electric current value control circuit taken place due to an introduction of the AC component applied by the application device into the charging voltage generating portion.

Image forming apparatus having a high voltage power source for a contact

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. It is also possible to interrupt the image formation for a predetermined image formation count without entry by the operator.

Image forming apparatus with image forming interruption capabilities

Disclosed is an image forming apparatus having a thermal fixing unit and a cooling fan. There is an input device for inputting print data which is sent from an external apparatus; a timer for starting an operation upon completion of an image forming operation; and a controller for controlling the thermal fixing unit and the cooling fan on the basis of an operating state of the timer.

Image forming apparatus

A recording apparatus comprises a recording unit for recording information onto a recording medium, a feeder for feeding the recording medium to the recording unit, a detector between the recording unit and the feeder for detecting the recording medium being fed, and a controller for inhibiting the recording operation of the recording unit when the detector detects the recording medium before the elapse of a predetermined period of time from the start of the feeding operation of the feeder.

A control system using a plurality of microcomputers prevents data transfer error by allowing execution of control programs by the respective microcomputers only after all the microcomputers have been initialized. The control system may be used for controlling, for example, a copying machine and a sorter.

Control system using computers and having an initialization function

An image forming apparatus includes a device operable with a first rated voltage and a second rated voltage which is different from the first rated voltage, an image forming apparatus for forming an unfixed image on an image supporting member, a fixing device for fixing the unfixed image on the image supporting member, the fixing device including a heating roller heated by a heater and a back-up roller contacted to the heating roller, the rollers starting rotation under a predetermined condition, wherein the predetermined condition is different between when the apparatus is operated with the first rated voltage and when it is operated with the second rated voltage.

A reproduction apparatus has a reader for reading an original image by photoelectric conversion and a character generator in which image information from said reader and image information from said character generator are synthesized.

Reproduction apparatus

Growing community of inventors

Tokyo, Japan

Shunichi Masuda