Image forming apparatus and recording medium
AssigneeKonica Minolta, Inc.
InventorShoichi Nomura
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes, an image former that forms an image in a plurality of colors on a sheet by an intermediate transfer method; and a hardware processor that acquires sheet attribute information indicating an attribute of the sheet, wherein, the hardware processor measures a color misregistration amount at a predetermined position in a surface of the sheet on which the image is formed by the image former; and the hardware processor performs control for correcting at least the color misregistration on the surface of the sheet, based on the acquired sheet attribute information and the measured color misregistration amount.
Claims18
An image forming apparatus comprising:
- an image former that forms an image in a plurality of colors on a sheet by an intermediate transfer method, the image including a chart for measuring a color misregistration amount during image formation by the image forming apparatus;
- a hardware processor that acquires sheet attribute information indicating one selected from the group consisting of basis weight of the sheet, size of the sheet, paper type of the sheet, stiffness of the sheet, moisture content of the sheet, surface smoothness of the sheet, surface evenness of the sheet, specific gravity of the sheet, and conductivity of the sheet;
- and
- a detector located on a downstream side of the image former in a sheet conveyance direction, the detector being configured to detect the image formed on the sheet,
- wherein,
- the hardware processor measures the color misregistration amount at a predetermined position in a surface of the sheet on which the chart is formed by the image former, the measurement of the color misregistration amount being performed based on the chart formed on the sheet by the image former and detected by the detector;
- the hardware processor performs control for correcting at least the color misregistration on the surface of the sheet, based on the acquired sheet attribute information and the measured color misregistration amount;
- and
- the hardware processor determines, based on the acquired sheet attribute information, a number of patch or patches included in the chart, an arrangement positions of the patch or patches and a shape of a pattern included in the patch or patches corresponding to a maximum color misregistration amount assumed from the sheet attribute information.
A non-transitory recording medium including a program that controls a computer of an image forming apparatus comprising an image former for forming images in a plurality of colors on a sheet by an intermediate transfer method to functions as:
- a hardware processor that acquires sheet attribute information indicating one selected from the group consisting of basis weight of the sheet, size of the sheet, paper type of the sheet, stiffness of the sheet, moisture content of the sheet, surface smoothness of the sheet, surface evenness of the sheet, specific gravity of the sheet, and conductivity of the sheet,
- wherein,
- the image includes a chart for measuring a color misregistration amount during image formation by the image forming apparatus,
- the hardware processor measures the color misregistration amount at a predetermined position in a surface of the sheet on which the chart is formed by the image former, the measurement of the color misregistration amount being performed based on the chart formed on the sheet by the image former and detected by a detector;
- the hardware processor performs control to correct at least the color misregistration on the surface of the sheet based on the acquired sheet attribute information and the measured color misregistration amount;
- and
- the hardware processor determines, based on the acquired sheet attribute information, a number of patch or patches included in the chart, an arrangement positions of the patch or patches and a shape of a pattern included in the patch or patches corresponding to a maximum color misregistration amount assumed from the sheet attribute information.
Dependencies are inferred from the claim text.