JP2016048402A5

JP2016048402A5 -

Info

Publication number: JP2016048402A5
Application number: JP2016002593A
Authority: JP
Filing date: 2016-01-08
Publication date: 2016-05-26
Anticipated expiration: 2031-08-16

Description

上記目的を達成するために本発明にあっては、
画像データに基づいた画像を記録材に形成する画像形成部と、
前記画像データから濃度情報を取得する取得部と、
加熱部材と、前記加熱部材と共にニップ部を形成する加圧部材と、を有し、前記画像が形成された記録材を前記ニップ部で搬送しながら加熱して前記画像を記録材に定着する定着部と、
前記加熱部材の温度を検知する温度検知部と、
前記温度検知部の検知温度が目標温度になるように前記加熱部材に供給する電力を制御する制御部と、
を備える画像形成装置において、
前記制御部は、記録材毎に各々の記録材に形成する前記画像の前記濃度情報に応じた前記目標温度を設定し、
連続的に複数の記録材に前記画像を形成するときに、前記取得部は、１枚目からＮ枚目（Ｎ≧２）までの記録材に形成する前記画像の前記濃度情報を取得し、ｋ枚目（２≦ｋ≦Ｎ）の前記画像の濃度がｋ−１枚目の前記画像の濃度よりも高い場合、前記制御部は、前記ｋ−１枚目の前記目標温度を前記ｋ−１枚目の前記濃度情報に応じた前記目標温度よりも高く且つ前記ｋ枚目の前記濃度情報に応じた前記目標温度よりも低い温度に設定し、前記ｋ枚目の前記目標温度を前記ｋ枚目の前記濃度情報に応じた前記目標温度に設定することを特徴とする。
また、上記目的を達成するために本発明にあっては、
画像データに基づいた画像を記録材に形成する画像形成部と、
前記画像データから濃度情報を取得する取得部と、
加熱部材と、前記加熱部材と共にニップ部を形成する加圧部材と、を有し、前記画像が形成された記録材を前記ニップ部で搬送しながら加熱して前記画像を記録材に定着する定着部と、
前記加熱部材の温度を検知する温度検知部と、
前記温度検知部の検知温度が目標温度になるように前記加熱部材に供給する電力を制御する制御部と、
を備える画像形成装置において、
前記制御部は、記録材毎に各々の記録材に形成する前記画像の前記濃度情報に応じた前記目標温度を設定し、
連続的に複数の記録材に前記画像を形成するときに、前記取得部は、１枚目からＮ枚目（Ｎ≧３）までの記録材に形成する前記画像の前記濃度情報を取得し、ｋ枚目（３≦ｋ≦Ｎ）の前記画像の濃度がｊ枚目（１≦ｊ＜ｋ−１）からｋ−１枚目のいずれの前記画像の濃度よりも高いもしくは低い場合、前記制御部は、前記ｊ枚目から前記ｋ−１枚目の前記目標温度を前記ｋ枚目に近づく程、前記ｋ枚目の前記濃度情報に応じた前記目標温度に近い温度に設定し、前記ｋ枚目の前記目標温度を前記ｋ枚目の前記濃度情報に応じた前記目標温度に設定することを特徴とする。
In order to achieve the above object, the present invention provides:
An image forming unit for forming an image based on image data on a recording material;
An acquisition unit for acquiring density information from the image data;
A fixing unit that includes a heating member and a pressure member that forms a nip portion together with the heating member, and heats the recording material on which the image is formed while conveying the nip portion to fix the image on the recording material. And
A temperature detector for detecting the temperature of the heating member;
A control unit that controls electric power supplied to the heating member such that the temperature detected by the temperature detection unit becomes a target temperature;
In an image forming apparatus comprising:
The control unit sets the target temperature according to the density information of the image to be formed on each recording material for each recording material,
When the image is continuously formed on a plurality of recording materials, the acquisition unit acquires the density information of the image formed on the first to Nth recording materials (N ≧ 2), When the density of the kth image (2 ≦ k ≦ N) is higher than the density of the k−1th image, the control unit sets the k−1th target temperature to the k− The temperature is set to be higher than the target temperature corresponding to the density information of the first sheet and lower than the target temperature corresponding to the density information of the kth sheet, and the target temperature of the kth sheet is set to the k The target temperature is set according to the density information of the first sheet .
In order to achieve the above object, in the present invention,
An image forming unit for forming an image based on image data on a recording material;
An acquisition unit for acquiring density information from the image data;
A fixing unit that includes a heating member and a pressure member that forms a nip portion together with the heating member, and heats the recording material on which the image is formed while conveying the nip portion to fix the image on the recording material. And
A temperature detector for detecting the temperature of the heating member;
A control unit that controls electric power supplied to the heating member such that the temperature detected by the temperature detection unit becomes a target temperature;
In an image forming apparatus comprising:
The control unit sets the target temperature according to the density information of the image to be formed on each recording material for each recording material,
When the image is continuously formed on a plurality of recording materials, the acquisition unit acquires the density information of the image formed on the first to Nth recording materials (N ≧ 3), When the density of the k-th image (3 ≦ k ≦ N) is higher or lower than the density of any of the j-th image (1 ≦ j <k−1) to the k−1th image, the control The unit sets the target temperature of the (k−1) th sheet from the jth sheet to a temperature closer to the target temperature according to the density information of the kth sheet as the kth sheet approaches. The target temperature of the first sheet is set to the target temperature corresponding to the density information of the kth sheet.

Claims

画像データに基づいた画像を記録材に形成する画像形成部と、An image forming unit for forming an image based on image data on a recording material;
前記画像データから濃度情報を取得する取得部と、An acquisition unit for acquiring density information from the image data;
加熱部材と、前記加熱部材と共にニップ部を形成する加圧部材と、を有し、前記画像が形成された記録材を前記ニップ部で搬送しながら加熱して前記画像を記録材に定着する定着部と、A fixing unit that includes a heating member and a pressure member that forms a nip portion together with the heating member, and heats the recording material on which the image is formed while conveying the nip portion to fix the image on the recording material. And
前記加熱部材の温度を検知する温度検知部と、A temperature detector for detecting the temperature of the heating member;
前記温度検知部の検知温度が目標温度になるように前記加熱部材に供給する電力を制御する制御部と、A control unit that controls electric power supplied to the heating member such that the temperature detected by the temperature detection unit becomes a target temperature;
を備える画像形成装置において、In an image forming apparatus comprising:
前記制御部は、記録材毎に各々の記録材に形成する前記画像の前記濃度情報に応じた前記目標温度を設定し、The control unit sets the target temperature according to the density information of the image to be formed on each recording material for each recording material,
連続的に複数の記録材に前記画像を形成するときに、前記取得部は、１枚目からＮ枚目（Ｎ≧２）までの記録材に形成する前記画像の前記濃度情報を取得し、ｋ枚目（２≦ｋ≦Ｎ）の前記画像の濃度がｋ−１枚目の前記画像の濃度よりも高い場合、前記制御部は、前記ｋ−１枚目の前記目標温度を前記ｋ−１枚目の前記濃度情報に応じた前記目標温度よりも高く且つ前記ｋ枚目の前記濃度情報に応じた前記目標温度よりも低い温度に設定し、前記ｋ枚目の前記目標温度を前記ｋ枚目の前記濃度情報に応じた前記目標温度に設定することを特徴とする画像形成装置。When the image is continuously formed on a plurality of recording materials, the acquisition unit acquires the density information of the image formed on the first to Nth recording materials (N ≧ 2), When the density of the kth image (2 ≦ k ≦ N) is higher than the density of the k−1th image, the control unit sets the k−1th target temperature to the k− The temperature is set to be higher than the target temperature corresponding to the density information of the first sheet and lower than the target temperature corresponding to the density information of the kth sheet, and the target temperature of the kth sheet is set to the k An image forming apparatus, wherein the target temperature is set according to the density information of the first sheet.

前記ｋ枚目（２≦ｋ≦Ｎ）の前記画像の濃度が前記ｋ−１枚目の前記画像の濃度よりも低い場合、前記制御部は、前記ｋ−１枚目の前記目標温度を前記ｋ枚目の前記濃度情報に応じた前記目標温度よりも高く且つ前記ｋ−１枚目の前記濃度情報に応じた前記目標温度よりも低い温度に設定し、前記ｋ枚目の前記目標温度を前記ｋ枚目の前記濃度情報に応じた前記目標温度に設定することを特徴とする請求項１に記載の画像形成装置。When the density of the kth image (2 ≦ k ≦ N) is lower than the density of the k−1th image, the control unit sets the target temperature of the k−1th image to the target temperature. The temperature is set to be higher than the target temperature according to the density information of the kth sheet and lower than the target temperature according to the density information of the (k−1) th sheet, and the target temperature of the kth sheet is set The image forming apparatus according to claim 1, wherein the target temperature is set according to the density information of the kth sheet.

画像データに基づいた画像を記録材に形成する画像形成部と、An image forming unit for forming an image based on image data on a recording material;
前記画像データから濃度情報を取得する取得部と、An acquisition unit for acquiring density information from the image data;
加熱部材と、前記加熱部材と共にニップ部を形成する加圧部材と、を有し、前記画像が形成された記録材を前記ニップ部で搬送しながら加熱して前記画像を記録材に定着する定A heating member, and a pressure member that forms a nip portion together with the heating member, and the recording material on which the image is formed is heated while being conveyed in the nip portion to fix the image on the recording material.
着部と、The kimono,
前記加熱部材の温度を検知する温度検知部と、A temperature detector for detecting the temperature of the heating member;
前記温度検知部の検知温度が目標温度になるように前記加熱部材に供給する電力を制御する制御部と、A control unit that controls electric power supplied to the heating member such that the temperature detected by the temperature detection unit becomes a target temperature;
を備える画像形成装置において、In an image forming apparatus comprising:
前記制御部は、記録材毎に各々の記録材に形成する前記画像の前記濃度情報に応じた前記目標温度を設定し、The control unit sets the target temperature according to the density information of the image to be formed on each recording material for each recording material,
連続的に複数の記録材に前記画像を形成するときに、前記取得部は、１枚目からＮ枚目（Ｎ≧３）までの記録材に形成する前記画像の前記濃度情報を取得し、ｋ枚目（３≦ｋ≦Ｎ）の前記画像の濃度がｊ枚目（１≦ｊ＜ｋ−１）からｋ−１枚目のいずれの前記画像の濃度よりも高いもしくは低い場合、前記制御部は、前記ｊ枚目から前記ｋ−１枚目の前記目標温度を前記ｋ枚目に近づく程、前記ｋ枚目の前記濃度情報に応じた前記目標温度に近い温度に設定し、前記ｋ枚目の前記目標温度を前記ｋ枚目の前記濃度情報に応じた前記目標温度に設定することを特徴とする画像形成装置。When the image is continuously formed on a plurality of recording materials, the acquisition unit acquires the density information of the image formed on the first to Nth recording materials (N ≧ 3), When the density of the k-th image (3 ≦ k ≦ N) is higher or lower than the density of any of the j-th image (1 ≦ j <k−1) to the k−1th image, the control The unit sets the target temperature of the (k−1) th sheet from the jth sheet to a temperature closer to the target temperature according to the density information of the kth sheet as the kth sheet approaches. The image forming apparatus, wherein the target temperature of the first sheet is set to the target temperature corresponding to the density information of the kth sheet.