Canon Kabushiki Kaisha

Hirotaka Seki

Satoru Yamamoto

Keita Takahashi

Shoji Takeda

Atsushi Otani

Akihiko Sakai

Shigeo Hata

Takehiro Ishidate

Yasuaki Otoguro

Yuichiro Imai

Katsuhiro Ishido

Kazumi Sato

Toshitaka Noro

Koichiro Nakanishi

Takeyuki Suda

Daisuke Morikawa

Ryo Mikami

Yuzuru Yano

Hayato Koyama

Shinichi Isozaki

An inspection system comprises a plurality of image capturing systems including a first image capturing unit, a first irradiation unit corresponding to the first image capturing unit, a second irradiation unit that does not correspond to the first image capturing unit but corresponds to a second image capturing unit and in which the irradiated terahertz waves are directly incident to the first image capturing unit, and a control unit that controls the plurality of image capturing systems such that the timing of a period of image capturing of the first image capturing unit and the timing of a period of irradiation of the terahertz waves of the second irradiation unit is different.

Inspection system and method for controlling the same, and storage medium

An image forming apparatus includes an image forming unit configured to form an image on a sheet based on image forming condition, a reader configured to convey the sheet and read a test image on the sheet while the sheet is conveyed, and a controller configured to control the image forming unit to form the image and the test image on a same sheet, control the reader to read the test image on the same sheet, and generate the image forming condition for adjusting a density of an image to be formed by the image forming unit, based on a reading result of the test image by the reader.

Image forming apparatus having image stabilization

An exposure apparatus comprises an exposure head, a memory and at least one processor. The exposure head includes light-emitting elements, and a rod lens array. A photosensitive body is rotationally driven. The light-emitting elements are arranged in a direction intersecting a direction of rotation of the photosensitive body. The rod lens array forms an image of light on the photosensitive body. The light is outputted from any of the light-emitting elements based on image data, passes through the rod lens array and reaches the photosensitive body. The memory stores correction data for correcting a streak image. The at least one processor corrects the image data based on the correction data read out from the memory.

Image forming apparatus and exposure apparatus for forming image using rod lens array

Image forming apparatus

There is provided a reading apparatus that includes a conveyance roller, a light source, a light transmission member, a line sensor having a plurality of pixels and configured to receive reflected light from a sheet via the light transmission member while the sheet is conveyed by the conveyance roller, and a controller. The controller is configured to perform acquiring an output value of a first pixel, an output value of a second pixel, and an output value of a third pixel, determine a first value based on the output value of the second pixel and a first coefficient, determine a second value based on the output value of the third pixel and a second coefficient, and determine read data based on the output value of the first pixel, the first value, and the second value. The first coefficient is larger than the second coefficient.

Reading apparatus

In a case where an event occurs, a moving image corresponding to a time period during which a matter relating to the event is detectable is reproduced. A moving image reproduction apparatus includes a human figure detection unit that detects a first human figure and a second human figure detected during an event time period which is a partial time period which an event continues, a specification unit that specifies a first human figure appearance time period during which the first human figure appears and a second human figure appearance time period during which the second human figure appears, and a display control unit that controls reproduction of a time period of a moving image, the time period including a time from the first human figure appearance time period to the second human figure appearance time period.

Moving image reproduction apparatus, moving image reproduction method, moving image reproduction system, and storage medium

An image forming apparatus includes an exposure head having an odd number of chips in each of which a plurality of light emitting elements configured to expose a photosensitive member are arrayed at intervals corresponding to a first resolution in an intersecting direction intersecting with a rotation direction of the photosensitive member. An even number of chips of the odd number of chips are arranged on one side of the printed circuit board in the rotation direction, and a remaining odd number of chips of the odd number of chips are arranged on another side of the printed circuit board. A center of an intensity of a light amount of the odd number of chips in the rotation direction is shifted to a side of the even number of chips with respect to a center of the printed circuit board in the rotation direction.

Image forming apparatus with separate light emitting element arrays

An image forming apparatus resets a count value retained by a counter if a cleaning sequence is executed based on an execution instruction accepted from an operator via an operation unit or when the count value for counting the number of image-formed sheets reaches a predetermined value.

Image forming apparatus with optical scanning device window cleaning member and control thereof

An information processing apparatus capable of executing adjustment of an image formation position at a timing determined based on the number of printed sheets according to a user's request. Adjustment modes for use in adjusting geometrical characteristics of an image which is printed on a sheet are displayed for causing an image forming apparatus to print an adjustment chart. A controller receives first information indicating whether or not to execute a first adjustment mode for causing the image forming apparatus to print the adjustment chart based on the number of sheets on which images have been printed by the image forming apparatus, and receives second information indicating whether or not to execute a second adjustment mode for causing the image forming apparatus to print the adjustment chart based on a result of detection by a temperature sensor provided in the image forming apparatus.

Information processing apparatus and image forming apparatus to align print positions

An image forming apparatus includes a photosensitive drum; an exposure portion including light emitting elements; and a controller configured to control activation of the light emitting elements. The exposure portion includes array chips, each including the light emitting elements, a substrate on which the array chips are arranged in a staggered fashion in the rotational axis direction, and a substrate temperature detecting portion. The controller includes a correcting portion configured to correct magnification of the image data with respect to the rotational axis direction depending on a length fluctuation amount of the substrate calculated on the basis of the temperature detected by the temperature detecting portion, and a converting portion. Depending on magnification correction by the correcting portion, the image data is arranged by the converting portion on the basis of the mounting positions of the array chips.

Provided is an image reading apparatus configured to recognize edge portions of an image of an original precisely without being influenced by the varying state of the four sides of the original. The image reading apparatus includes an image reading unit configured to read the original image by scanning the original, an edge determining unit configured to determine first edge locations at the left end and right end of the original image in a main scanning direction, an edge detector configured to detect a second edge location of the original image in a sub-scanning direction, a tilt expression calculator configured to calculate a linear expression that represents the amount of inclination of the original image with respect to the main scanning direction.

Image reading apparatus and image reading method

An image forming apparatus includes: a photosensitive member; a process member configured to act on the photosensitive member; and a light scanning apparatus configured to emit a light beam to the photosensitive member. The light scanning apparatus includes: a light source; a rotary polygon mirror; a first signal generating unit configured to receive the light beam deflected by the rotary polygon mirror to generate a first signal indicating a scan starting position; and a second signal generating unit configured to generate a second signal based on a rotation angle of the rotary polygon mirror. A lighting-up timing of the light source for generating the first signal is determined based on a number of the second signals after a voltage for image formation is applied and a relationship between the first signal and the second signal is obtained before the voltage is applied and after the rotary polygon mirror is rotated.

Image forming apparatus with improved timing for emitting beam detect light beam

An image reading apparatus which is capable of successfully reading an image off an original by correctly detecting a size of the original without degrading productivity even if mixed-size originals are placed on an original tray with edges not aligned. An image reading unit reads an image off an original passing through a reading position. An original size detection sensor detects an original. A first original size is determined using a result of detection by the original size detection sensor, and a second original size is determined using the image read off the original. The first original size or the second original size is adopted as an original size.

Image reading apparatus with original size detection sensor

An image reading apparatus capable of recognizing edge portions of an original image with precision is provided. The image reading apparatus uses an image reading unit to scan an original being conveyed and read an image of the original. The image reading apparatus includes an edge information obtaining unit and an edge determining unit. The edge information obtaining unit detects an image of an edge portion of the original image and obtains, for each point in a main scanning direction, edge information, which indicates whether or not an edge portion image is detected at the point in a sub-scanning direction. The edge determining unit conducts detection from at least one of two directions of the main scanning direction to detect a point where a given number of successive edge portion images are detected, and obtains an edge portion based on the detected point.

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Tokyo, Japan

Hirotaka Seki