Canon Kabushiki Kaisha

Shingo Hirota

Masami Hano

Yoshiro Tsukada

Toshiyuki Yamada

Daisuke Katayama

Taro Hanazato

Kyohei Kikuchi

An image forming system includes an image forming unit including a first photosensitive member, a first developing unit, a second photosensitive member, a second developing unit, a third photosensitive member, a third developing unit, a fourth photosensitive member, and a fourth developing unit; a varnish applying unit; an irradiation unit; and a controller configured to control image formation by the image forming unit to form a black image, on which the varnish is superimposed, with yellow toner, magenta toner, and cyan toner.

Image forming system and image forming apparatus

An image forming system includes an image forming apparatus, a varnish applying apparatus, and a controller. A toner image formed on a recording material by the image forming apparatus on the basis of inputted first image data is a first toner image, and an image formed on the recording material by the varnish applying apparatus on the basis of inputted second image data is a varnish image. In a case that the varnish image is to be formed in a non-image region where the first toner image is not formed, before the varnish image is formed, a second toner image is formed with monochromatic toner by the image forming apparatus on a portion of the non-image region where the varnish image is to be formed.

Image forming system

An image forming system includes an image forming apparatus, a fixing device, a varnish image forming apparatus, an image reading portion, and a controller. The controller corrects first image data depending on first detection image data of a toner image formed on a first recording material and read by the image reading portion, and then depending on the corrected first image data, a toner image is formed on a second recording material subsequent to the first recording material. The controller corrects second image data depending on second detection image data of a varnish image read by the image reading portion, and then depending on the corrected second image data, a varnish image is formed on the second recording material.

Image forming system including varnish image forming apparatus

An image forming system includes an image forming apparatus, a varnish applying apparatus, an input unit, a first image processing unit, and a second image processing unit. The image forming apparatus forms a toner image on a recording material on the basis of image data obtained by subjecting first image data to data change processing. The varnish applying apparatus forms a varnish image on the recording material on the basis of image data obtained by subjecting second image data to the data change processing.

Image forming system including varnish applying apparatus

An image forming system includes an image forming unit, a varnish applying unit, a conveying unit, an irradiation unit, and a controller. The controller controls conveyance of a recording material so that a conveying speed of the recording material in a case that varnish is applied to the recording material with a toner image is formed is slower than a conveying speed of the recording material in a case that varnish is applied to the recording material with no toner image. The controller controls irradiation of the varnish with light so that intensity of the light with which the varnish is irradiated in a case that the varnish is applied to the recording material with the toner image is lower than intensity of the light with which the varnish is irradiated in a case that the varnish is applied to the recording material with no toner image.

Image forming apparatus and varnish applying apparatus

A cleaning blade includes an elastic material, a first surface, a second surface and an end surface. The end surface includes a first region and a second region provided on opposite sides of the first region. The elastic material of the cleaning blade has indentation elastic modulus E[MPa] of 3 or more and 20 or less, and indentation elastic modulus E[MPa] of the end surface in the first region is (E+1) or more and 40 or less. Dynamic hardness DH1 [mN/&#x3bc;m] of the first region is 0.10 or more and 0.20 or less, dynamic hardness DH2 [mN/&#x3bc;m] of the second region is 0.15 or more and 0.50 or less, and a difference (DH2&#x2212;DH1) is 0.05 [mN/&#x3bc;m] or more. A difference in thickness between the end surface in the first region and the end surface in the second region is 25 &#x3bc;m or less.

Cleaning blade, manufacturing method of the cleaning blade, process cartridge and image forming apparatus

A cleaning blade, which is to be brought into contact with a surface of a photosensitive drum, satisfies the following condition. First, the cleaning blade having a free length of 8 mm is brought into contact with an opposed object for measurement having a plurality of measurement recesses each having a partially spherical shape with a depth of 0.7 &#x3bc;m and a radius of 15 &#x3bc;m on a surface so that a linear pressure is 0.196 N/cm and 0.490 N/cm, and a contact angle with respect to the opposed object for measurement is 25&#xb0;. In this case, a contact width of the cleaning blade in each of the measurement recesses is 4 &#x3bc;m or more and 8 &#x3bc;m or less when the linear pressure is 0.196 N/cm and is 4 &#x3bc;m or more and 13.5 &#x3bc;m or less when the linear pressure is 0.490 N/cm.

Image forming apparatus

After a predetermined period elapses since the start of use of a photosensitive member, if a calculated value calculated from a detection current between a charging unit and a photosensitive member is out of a predetermined range, a determining unit does not perform determination using a currently calculated value and, if the calculated value is within the predetermined range, the determining unit performs determination using the currently calculated value.

Image forming apparatus for reducing misdetections

An image forming apparatus includes: a power source applying voltage to a charging roller to charge a photosensitive drum; a toner-image forming unit forming a toner image on the photosensitive drum; a detecting member which detects a DC current to be flowed from the charging roller to the photosensitive drum; a driving source driving the photosensitive drum at a predetermined speed; and an execution unit executing a detection mode to detect the DC current with the detecting member when the voltage is applied in a state in which the photosensitive drum is rotated, in a period except a period during which the toner image is formed on the photosensitive drum, the execution unit setting a speed of the driving source when the detection mode is executed at a second speed faster than a first speed that is fastest in the period during which the toner image is formed.

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Toride, Japan

Shingo Hirota