Image forming apparatus

Patent metadata

Field	Value
Publication number	US-9360802-B2
Application number	US-201514604292-A
Country	US
Kind code	B2
Filing date	Jan 23, 2015
Priority date	Jul 28, 2014
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

An image forming apparatus includes an image forming device that forms an image on a recording medium with a powdery material, the image being sized so as to extend beyond an edge of the recording medium; a collecting device that collects the material that has extended off the recording medium as a result of the image forming device forming the image; and a restricting unit that controls the image forming device in such a manner that the image forming device reduces an amount of use of the material in a region of the image that extends off the recording medium to a larger degree on an outer side of the image than a side of the image near the recording medium.

First claim

What is claimed is:

1. An image forming apparatus, comprising:
an image forming device configured to form an image on a recording medium with a powdery material, the image being sized so as to extend beyond an edge of the recording medium;
a collecting device configured to collect the material that has extended off the recording medium as a result of the image forming device forming the image; and
a restricting unit configured to control the image forming device in such a manner that the image forming device reduces an amount of use of the material in a region of the image that extends off the recording medium to a larger degree on an outer side of the image than a side of the image near the recording medium,
wherein the restricting unit is further configured to restrict the amount of use of the material in an inner region and in an outer region and the amount of use of the material is restricted to a larger degree in the outer region than in the inner region, the inner region being located inward of the edge of the recording medium and the outer region being located outward of the edge of the recording medium, the inner region and the outer region being included in the region of the image that extends off the recording medium.

2. The image forming apparatus according to claim 1 ,
wherein the material with which the image forming device forms an image includes a color material and a colorless material, and
wherein the restricting unit is further configured to restrict an amount of use of the colorless material to a larger degree than an amount of use of the color material.

3. The image forming apparatus according to claim 2 ,
wherein the image forming device is further configured to form the image on the recording medium while the recording medium is being transported, and
wherein the restricting unit is further configured to restrict the amount of use of the material in a first region, which extends off the recording medium in a direction in which the recording medium is transported, to a larger degree than the amount of use of the material in a second region, which extends off the recording medium in a direction perpendicular to the direction in which the recording medium is transported.

4. The image forming apparatus according to claim 1 ,
wherein the image forming device is further configured to form the image on the recording medium while the recording medium is being transported, and
wherein the restricting unit is configured to restrict the amount of use of the material in a first region, which extends off the recording medium in a direction in which the recording medium is transported, to a larger degree than the amount of use of the material in a second region, which extends off the recording medium in a direction perpendicular to the direction in which the recording medium is transported.

5. An image forming apparatus, comprising:
an image forming device configured to form an image on a recording medium with a powdery material, the image being sized so as to extend beyond an edge of the recording medium;
a collecting device configured to collect the material that has extended off the recording medium as a result of the image forming device forming the image; and
a restricting unit configured to control the image forming device in such a manner that the image forming device reduces an amount of use of the material in a region of the image that extends off the recording medium to a larger degree on an outer side of the image than a side of the image near the recording medium,
wherein the material with which the image forming device forms an image includes a color material and a colorless material, and
wherein the restricting unit is further configured to restrict an amount of use of the colorless material to a larger degree than an amount of use of the color material.

6. The image forming apparatus according to claim 5 ,
wherein the image forming device is further configured to form the image on the recording medium while the recording medium is being transported, and
wherein the restricting unit is further configured to restrict the amount of use of the material in a first region, which extends off the recording medium in a direction in which the recording medium is transported, to a larger degree than the amount of use of the material in a second region, which extends off the recording medium in a direction perpendicular to the direction in which the recording medium is transported.

7. An image forming apparatus, comprising:
an image forming device configured to form an image on a recording medium with a powdery material, the image being sized so as to extend beyond an edge of the recording medium;
a collecting device configured to collect the material that has extended off the recording medium as a result of the image forming device forming the image; and
a restricting unit configured to control the image forming device in such a manner that the image forming device reduces an amount of use of the material in a region of the image that extends off the recording medium to a larger degree on an outer side of the image than a side of the image near the recording medium,
wherein the image forming device is further configured to form the image on the recording medium while the recording medium is being transported, and
wherein the restricting unit is further configured to restrict the amount of use of the material in a first region, which extends off the recording medium in a direction in which the recording medium is transported, to a larger degree than the amount of use of the material in a second region, which extends off the recording medium in a direction perpendicular to the direction in which the recording medium is transported.

Assignees

• Fuji Xerox Co Ltd

Inventors

• Furukata Hiroko
• Goto Yasutaka
• Kubota Yuki
• Kobayashi Takuya
• Tanaka Satoshi
• Sato Noribumi
• Okada Keiichi
• Uchiyama Junichi

Classifications

• G03G15/0898

  for preventing toner scattering during operation, e.g. seals (sealing the donor member G03G15/0817; sealing the magnetic brush G03G15/0942) · CPC title

• G03G15/095 Primary

  Removing excess solid developer {, e.g. fog preventing} · CPC title

• G03G15/0126

  using a solid developer · CPC title

• G03G15/082

  for immersion · CPC title

• G03G19/00

  Processes using magnetic patterns; Apparatus therefor {, i.e. magnetography} · CPC title