Canon Kabushiki Kaisha

Yukitoshi Takeuchi

Tsuyoshi Yamauchi

Tsutomu Takayama

Akimitsu Hoshi

Shigeru Kawasaki

Atsushi Miyahara

Shoichi Inoue

Yukio Yoshida

The original cover of an image reading apparatus for covering an original stand which is provided on the image reading apparatus and on which an original is placed is provided with a cover member for covering the original placed on the original stand, and a hinge member having one end thereof pivotally supported by the cover member and having the other end thereof mounted on and pivotally supported by the original stand. The original cover is characterized in that the cover member is biased in a direction in which it is opened relative to the hinge member and is biased toward a rotary shaft, by biasing means.

Image reading apparatus and original cover thereof

An image reading apparatus comprises an original mounting table, a scanning means for scanning an original mounted on the original mounting table, a carriage for mounting the scanning means thereon, a cable for transmitting a moving force to the carriage, and a guide member for guiding the carriage in the movement direction thereof. The carriage is biased in a rotating direction centering about an axis perpendicular to the original mounting table by the tension of the cable.

Image reading apparatus

An image reading apparatus includes a spring () provided at one end of a reading unit () and adapted to bias the reading unit () toward an original glass table (), and a sensor holder () provided on a guide rail () to be pivotal about it and adapted to hold the reading unit () through the spring ().

Image reading apparatus and method of supporting image reading unit

An image reading apparatus includes a transparent plate for supporting an original thereon, a reading unit for reading the original, and a one-piece frame member for containing the reading unit, the transparent plate being held the frame member.

Image reading apparatus and method of assembling the same

To provide an image reading apparatus provided with a pixel shifting mechanism for shifting an image incoming to a line sensor in a main scanning direction by substantial &frac12; of a pixel pitch, a scanning mechanism for scanning the line sensor in a sub-scanning direction and a control unit for performing scanning operation two times at a pitch almost equal to the pixel pitch at respective positions shifted to each other in the sub-scanning direction by a value equivalent to substantial &frac12; of the pixel pitch and causing the pixel shifting mechanism to perform the pixel shifting of &frac12; of the pixel pitch between first-time sub-scanning and second-time sub-scanning, and an image-signal generating unit for generating an image signal by averaging the pixel data values obtained through the two repetitions of sub-scanning between diagonal-directional adjacent pixels.

An image reading apparatus is disclosed which has the function of optically reading a transparent document while causing a transparent-document illuminating light source to move along the document. The apparatus has a correcting device for correcting the relative position between the transparent-document illuminating light source and a scanning unit located when document reading is started. It is thus possible to substantially maintain a light quantity at the reading lines while a document-reading operation is performed.

A shaft portion of a retard roller is supported by a pair of supporting members so that the retard roller can be assuredly supported and easily detached. One of the pair of supporting members is provided so as to be movable in the axial direction of the shaft portion. By moving the movable supporting member in a direction of separating from the shaft portion, the retard roller can be detached. A regulation device regulates movement of the movable supporting member in the direction of separating from the shaft portion at a position where the pair of supporting members engage with the shaft portion and is provided on a guide cover for blocking an opening for mounting/detaching the retard roller.

Roller supporting device allowing easy replacement of separating roller

An original reading device includes an original mount for mounting an original, a reading scanning system for reading the original mounted on the original mount by scanning the original, and a frame for supporting the original mount. The reading scanning system is mounted on the frame at a back side of the frame.

Original reading device wherein a frame supports both the original and

Image input apparatus and method having reading density control includes a driver for driving a scanner which reads an image. Discriminating circuitry is provided for discriminating (i) a type of software (e.g. OCR or image processing) used in the apparatus, or (ii) a type of character (e.g. Kanji or Gothic) input to the apparatus, or (iii) whether a reading density of the scanner is adequate for the input character size. Then, control circuitry controls the driver to drive the scanner with a reading density predetermined for the discriminated information type.

Image input apparatus and method having reading density control means

An image processing system has a reading device for reading an image of an original line by line, which repeats the reading operation at a predetermined cycle. A moving device moves an image reading position of the reading device in accordance with a driving signal. A driving device supplies to the moving device the driving signal for moving the image reading position of the reading device by a pitch line during a time period of the reading operation of a line. A computer generates a signal for instructing resumption of image reading by the reading device after interruption of the image reading. The driving device initiates supply of the driving signal to the moving device before the reading operation, upon reception of the image reading resumption signal generated from the computer.

Picture reading equipment having a reader for reading an image of the original, moving unit for moving an image reading position of said reader, and a driver for supplying a driving signal to said moving unit. The feed timing of the driving signal is so controlled that vibration of said driver and scanning system is reduced and a picture of high quality is obtained even when interruption/resumption of reading occurs during reading of an image.

Growing community of inventors

Yokohama, Japan

Yukitoshi Takeuchi