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Decoloring apparatus, image forming apparatus, and decoloring method

A technology of decolorization and coloring agent, which is applied in the direction of electric recording technology using charge pattern, equipment for electric recording technology using charge pattern, and electrography, etc. Problems such as obvious gloss

Inactive Publication Date: 2011-11-09
TOSHIBA TEC KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the decolorization performance of the decolorization toner in the prior art is still not perfect, for example, there are also defects such as the gloss of the decolorization part of the image formed on the paper is relatively obvious

Method used

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  • Decoloring apparatus, image forming apparatus, and decoloring method
  • Decoloring apparatus, image forming apparatus, and decoloring method
  • Decoloring apparatus, image forming apparatus, and decoloring method

Examples

Experimental program
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no. 1 approach

[0016] The first embodiment will be described.

[0017] figure 1 It is a structural diagram showing the structure of the decolorizing device 1 of this embodiment.

[0018] The decolorizing device 1 performs a "decoloring process" of removing the color of the decolorable toner on a sheet on which an image is formed using a "decolorable colorant" which is a so-called decolorable toner.

[0019] The decolorizing device 1 includes a processor 2 , a memory 4 , an auxiliary storage device 6 , an operation panel 8 , a paper feed cassette 10 , a pickup roller 12 , a decolorizing unit 20 , a discharge tray 32 , and the like.

[0020] The processor 2 is a processing device that controls the decolorization process in the decolorization device 1 . The processor 2 realizes various functions and executes processing by executing programs stored in the memory 4 or the auxiliary storage device 6 .

[0021] As the processor 2 , a CPU (Central Processing Unit: Central Processing Unit) or an M...

no. 2 approach

[0066] Next, a second embodiment will be described.

[0067] image 3 It is a configuration diagram showing the configuration of the decolorizing device 100 of the second embodiment.

[0068] The decolorizing unit 200 of the decolorizing device 100 according to the second embodiment is different in configuration from the decolorizing unit 20 of the first embodiment. Specifically, in the decolorizing unit 20 of the first embodiment, the paper is heated and decolorized by the heating belt 26 . However, in the decolorizing unit 200 of the present embodiment, the heating roller 34 heats the paper to decolorize it. Other configurations are the same as those of the decolorizing device 1 of the first embodiment.

[0069] The heating roller 34 of this embodiment heats the paper while interlocking with the pressure roller 28 to nip and convey the paper. The heating roller 34 heats the paper at a temperature equal to or higher than the decolorization temperature of the decolorizable...

no. 3 approach

[0077] Next, a third embodiment will be described.

[0078] Figure 4 It is a configuration diagram showing the configuration of the decolorizing device 102 constituting the present embodiment.

[0079] The decolorizing device 102 of this embodiment differs from the first and second embodiments in the following point. The roller 36 disposed downstream of the decolorizing section 202 in the paper conveying direction performs a process of roughening the surface of the decolorable colorant, that is, a process of suppressing the surface gloss of the decolorable colorant. The configuration of the decolorizing device 102 of this embodiment will be described below.

[0080] As a configuration different from the decolorizing device 1 of the first embodiment, the decolorizing device 102 includes a decolorizing unit 202 , a roller 36 , and an opposing roller 38 .

[0081] The decolorizing unit 202 has a roller 22, a heating roller 24, a heating belt 26', and a pressure roller 28.

...

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Abstract

The invention provides a decoloring apparatus and an image forming apparatus that erases a color of a decolorable colorant. The decoloring apparatus includes: a heating rotating member having roughness (Rz) of a surface, which comes into contact with a conveyed sheet, equal to or larger than 3.5 [mu]m and equal to or smaller than 6.0 [mu]m and configured to heat and decolor a decolorable colorant on the sheet; and a pressing member configured to come into press contact with the heating rotating member to form a nip section between the pressing member and the heating rotating member and cooperate with the heating rotating member to nip and convey the sheet.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 328,370, filed April 27, 2010, the entire contents of which are hereby incorporated by reference. technical field [0003] Embodiments described in this specification relate to a decolorizing device for decolorizing an image formed using a decolorable colorant that decolorizes upon heating. Background technique [0004] Conventionally, in order to recycle printed paper for the purpose of temporarily conveying and displaying information, a heat-sensitive recording medium (thermal paper) that erases printing by heating or a pigment that erases color by heating is used. [0005] Also, as a toner for an image forming apparatus such as an MFP (Multi Function Peripheral), a so-called erasable toner whose color disappears by heating is used. Since the paper on which an image is formed with a decolorizing toner can be decolorized by heating, the pape...

Claims

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Application Information

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IPC IPC(8): G03G21/00G03G15/00
CPCB41M7/0009G03G21/00G03G15/6582G03G15/00
Inventor 青木孝安今宫弘二古山昇
Owner TOSHIBA TEC KK
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