Abstract:
An image forming apparatus receives setting of an object to be adjusted, on an adjustment object selection screen when selecting an adjustment mode. After the object to be adjusted is set, camera(s) photograph(s) the object to be adjusted so that the image forming apparatus obtains photographed data of current object to be adjusted. Next, the apparatus searches photographed data of the object to be adjusted in the ideal state thereof from the database. Name of the object to be adjusted and related information in the photographed data agree with those of the photographed data of current object to be adjusted. The higher ranked related information is preferentially searched and it is determined whether or not pieces of the higher ranked related information thus preferentially searched agree with each other.
Abstract:
[Problem] To provide a stiffness measuring device capable of highly accurately measuring the stiffness of a recording material such as a sheet, and an image forming system equipped with the stiffness measuring device. [Solution] A stiffness measuring device includes a holding portion that holds a recording material so that a recording surface of the recording material is substantially parallel to a vertical direction, a pressing portion, and a stiffness acquiring section. The pressing portion presses a measurement point located on a lower side in the vertical direction than the portion of the recording material held by the holding portion. The stiffness acquiring section measure a reaction force obtained when the measurement point is pressed by the pressing portion and acquires the measured reaction force as the stiffness of the recording material.
Abstract:
Provided are an image forming system and a method for detecting glossiness capable of accurately detecting glossiness in various media having different conditions. The image forming system includes a sensor unit including a light source that irradiates a medium being conveyed with light and a gloss sensor that receives light emitted from the light source and specularly reflected on the medium and detects a diffusion distribution of light in the medium, and a detection condition setting unit that identifies a type of the medium being conveyed and sets a light amount of the light source and/or exposure time of the gloss sensor at the time of glossiness detection in accordance with the type of the medium. The image forming system further includes a glossiness detector that detects glossiness of the medium from a diffusion distribution of light detected by the gloss sensor under the detection condition set by the detection condition setting unit.
Abstract:
A measuring device, includes a physical property value detector and a push contact member that pushes to bring a sheet material in contact with the physical property value detector; and further includes a first processor that stops conveyance of the sheet material, pushes to bring the sheet material in contact with the physical property value detector, and detects a physical property value of the sheet material; a second processor that, after having detected the physical property value, cancels the pushing by the push contact member, separates the sheet material from the physical property value detector, and starts conveyance of the sheet material; and a physical property value specifier that specifies the physical property value on a basis of physical property values of a plurality of positions within a surface of the sheet material detected by executing the first processing and the second processing repeatedly.
Abstract:
An image forming apparatus as a sheet conveying apparatus comprises a paper feeding roller, an upstream side sensor, and an ultrasonic wave sensor. The paper feeding roller provides a plurality of sheets placed on a document tray in series to a conveying path. The upstream side sensor detects presence or absence of a sheet being conveyed along the conveying path, at a location of a downstream side of the paper feeding roller along the conveying path. The ultrasonic wave sensor detects presence or absence of occurrence of multiple feed, based on intensity of ultrasonic waves received at a location of a downstream side of the upstream side sensor along the conveying path.
Abstract:
A sheet distinction device includes a measurer, a housing, a shutter, a calibration plate, and a controller. The measurer emits light to a sheet, receives light reflected from the sheet, and acquires detection information for determining physical properties of the sheet. The housing houses the measurer and is provided with an opening through which the emitted light and the reflected light pass. The shutter switches between a closed state in which the opening is closed and an open state in which the opening is open. The calibration plate is provided on a surface of the shutter which is on an inner side in the closed state. In the closed state, the measurer emits light to a calibration plate and receives reflected light to acquire acquisition information. The controller calibrates the measurer based on the acquisition information.
Abstract:
Provided is a document conveyance apparatus that conveys a document along a document conveyance path including a reading position at which an image on a surface of the document is read, the document conveyance apparatus including: a hardware processor; an end detector that detects an angle of a corner portion of a front edge of the document; and an inclination detector that detects an amount of inclination of the front edge, wherein, in a case where it has been determined that the corner portion of the front edge includes a right angle portion on the basis of information obtained from the end detector, the hardware processor determines the amount of inclination of the front edge obtained from the inclination detector as an amount of inclination of the document, and performs inclination correction of the image read at the reading position.
Abstract:
A sheet conveying apparatus has a reference roller, a detection roller, and a detection sensor. The detection roller can move, and makes contact with the reference roller, facing the reference roller. The detection sensor outputs a signal corresponding to the displacement of the detection roller. The sheet is conveyed to a nip portion of the pair of rollers. At this time, the timing when an edge portion of the sheet being conveyed passes through the nip portion is detected. In response to the timing detected, the thickness of the sheet is detected, based on the signal output from the detection sensor.
Abstract:
To provide a sheet conveyance device capable of preventing degradation in quality of conveying a sheet and image quality even when a stiffness of the sheet is different between a sheet conveyance direction and a sheet width direction. A sheet conveyance device of an image forming apparatus includes an image forming part that conveys a sheet along a conveyance path; and a stiffness acquisition part that acquires a stiffness of the sheet in a first direction including a component in the sheet conveyance direction by bending the sheet in the first direction, and acquires a stiffness of the sheet in a second direction including a component in the sheet width direction orthogonal to the sheet conveyance direction by bending the sheet in the second direction.
Abstract:
An image forming apparatus includes the following. A measuring unit measures a physical property of media as a target on which an image is formed. An image forming operator forms an image on the media. A hardware processor controls an operation of the image forming operator and extracts a candidate of a type of media based on a measured result by the measuring unit. An operation receiver receives input to specify one type from the candidate extracted by the hardware processor. The hardware processor controls the image forming operator to form on the media an identification image determined according to a combination of the extracted candidates.