Image forming system

Patent metadata

Field	Value
Publication number	US-12265351-B2
Application number	US-202318226115-A
Country	US
Kind code	B2
Filing date	Jul 25, 2023
Priority date	Jul 26, 2022
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

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.

First claim

What is claimed is:

1. An image forming system comprising:
an image forming apparatus configured to form a toner image on a recording material;
a varnish applying apparatus configured to apply varnish on the recording material to form a varnish image on the recording material; and
a controller configured to control the image forming apparatus, in a case where the varnish image is to be formed in a non-image region where a first toner image is not formed, to form a second toner image with monochromatic toner on a portion where the varnish image is to be formed in the non-image region before the varnish image is formed,
wherein the toner image formed on the 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 the varnish image.

2. The image forming system according to claim 1 , wherein the monochromatic toner is transparent toner.

3. The image forming system according to claim 1 , wherein the monochromatic toner is white toner.

4. The image forming system according to claim 1 , wherein in a case where the varnish image is formed so as to extend over the first toner image and the non-image region, the controller controls a toner application amount of the second toner so that a difference in angle between a contact angle of the varnish used for the varnish image in an adjacent portion, of the first toner image, which is adjacent to the non-image region and in which the varnish image is formed and a contact angle of the varnish used for the varnish image in the second toner image is made 3° or less.

5. The image forming system according to claim 4 , wherein in the case where the varnish image is formed so as to extend over the first toner image and the non-image region, the controller controls the toner application amount of the second toner image so as to be equal to a toner application amount of the first toner image in the adjacent portion.

6. The image forming system according to claim 1 , wherein the controller controls the image forming apparatus to form no toner image with the monochromatic toner on the portion in the non-image region, in a case where the portion is surrounded by the first toner image.

7. The image forming system according to claim 1 , wherein the varnish is UV varnish of an ultraviolet solidifiable type, and
wherein the varnish applying apparatus solidifies the UV varnish by irradiating the UV varnish with ultraviolet radiation.

8. An image forming system comprising:
an image forming apparatus configured to form a toner image on a recording material;
a varnish applying apparatus configured to apply varnish on the recording material to form a varnish image on the recording material; and
a controller configured to control the image forming apparatus, in a case where the varnish image is to be formed in a non-image region where a first toner image is not formed, to form a second toner image with monochromatic toner on a contour portion of an area where the varnish image is to be formed in the non-image region before the varnish image is formed,
wherein the contour portion corresponds to a contour of the varnish image, and
wherein the toner image formed on the 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 the varnish image.

9. The image forming system according to claim 8 , wherein the monochromatic toner is transparent toner.

10. The image forming system according to claim 8 , wherein the monochromatic toner is white toner.

11. The image forming system according to claim 8 , wherein the controller controls the image forming apparatus to form no toner image with the monochromatic toner on the area in the non-image region, in a case where the area is surrounded by the first toner image.

12. The image forming system according to claim 8 , wherein the varnish is UV varnish of an ultraviolet solidifiable type, and
wherein the varnish applying apparatus solidifies the UV varnish by irradiating the UV varnish with ultraviolet radiation.

Assignees

• Canon Kk

Inventors

• Katayama Daisuke
• Tsukada Yoshiro
• Hano Masami
• Hirota Shingo
• Yamada Toshiyuki
• Hanazato Taro
• Kikuchi Kyohei

Classifications

• G03G2215/00801

  Coating device · CPC title

• G03G15/6585 Primary

  by using non-standard toners, e.g. transparent toner, gloss adding devices · CPC title