JP2013222105A5

JP2013222105A5 -

Info

Publication number: JP2013222105A5
Application number: JP2012094208A
Authority: JP
Filing date: 2012-04-17
Publication date: 2015-06-11
Anticipated expiration: 2032-04-17

Description

上記目的は本発明に係る画像形成装置にて達成される。要約すれば、本発明は、
転写材を積載する積載手段と、
前記積載手段に積載された転写材を給紙する給紙手段と、
像担持体に形成された画像を転写材に転写する転写手段と、
前記給紙手段から前記転写手段に転写材が搬送される搬送路上において、搬送される転写材を検知する検知手段と、
先行する第１の転写材と後続する第２の転写材を搬送する場合に、前記第１の転写材を第２の搬送速度で搬送した際に前記検知手段で前記第１の転写材を検知したタイミングから予測した前記第１の転写材の搬送ばらつきの量と、前記第２の転写材を前記検知手段で検知した検知タイミングとに基づき、前記第２の転写材を搬送する第１の搬送速度と前記第１の搬送速度で前記第２の転写材を搬送する第１の搬送時間を制御する制御手段と、
を有することを特徴とする画像形成装置である。 The above object is achieved by the image forming apparatus according to the present invention. In summary, the present invention
A loading means for loading the transfer material;
Paper feeding means for feeding the transfer material loaded on the stacking means;
Transfer means for transferring an image formed on the image carrier to a transfer material;
Detecting means for detecting a transferred transfer material on a transfer path in which the transfer material is transferred from the paper supply unit to the transfer unit;
When transporting the preceding first transfer material and the succeeding second transfer material, the first transfer material is detected by the detection means when the first transfer material is transported at a second transport speed. first to convey to the amount of conveying the variation of the first transfer material was measured timing or we pre was based the second transfer material and detection timing detected by the detecting means, the second transfer material and control means for controlling the inter first transportable Okutoki the conveying speed of the conveying said first said second transfer material at a conveying speed of,
An image forming apparatus comprising:

Claims

A loading means for loading the transfer material;
Paper feeding means for feeding the transfer material loaded on the stacking means;
Transfer means for transferring an image formed on the image carrier to a transfer material;
Detecting means for detecting a transferred transfer material on a transfer path in which the transfer material is transferred from the paper supply unit to the transfer unit;
When transporting the preceding first transfer material and the succeeding second transfer material, the first transfer material is detected by the detection means when the first transfer material is transported at a second transport speed. first to convey to the amount of conveying the variation of the first transfer material was measured timing or we pre was based the second transfer material and detection timing detected by the detecting means, the second transfer material and control means for controlling the inter first transportable Okutoki the conveying speed of the conveying said first said second transfer material at a conveying speed of,
An image forming apparatus comprising:

The detection means is disposed at least at two positions between a position where a factor that cannot predict transfer material conveyance variation is removed and a position where a factor that can predict transfer material conveyance variation is removed. The image forming apparatus according to claim 1, wherein:

A conveying means for conveying the rolling Utsushizai,
The position to remove the factor that the transport variation cannot be predicted is a position between the paper feeding unit and the transport unit,
The image forming apparatus according to claim 2, wherein a position at which a factor capable of predicting the conveyance variation is removed is between the conveyance unit and the transfer unit.

Said control means from said difference between the expected time to time and arrival of the first transfer material detected by said detecting means, the second the first transfer material to said detecting means at a transport speed of the reach The amount of transport variation of the first transfer material is predicted, and the amount of transport variation of the second transfer material is predicted according to the amount of transport variation of the first transfer material. The image forming apparatus according to any one of items 1 to 3.

2. The control unit according to claim 1, wherein the control unit determines the first transport speed according to a transport variation amount predicted according to a timing at which the detection unit detects the second transfer material. 5. The image forming apparatus according to any one of items 4.

The control unit conveys the second transfer material at the first conveyance speed, and the amount of conveyance variation when the detection unit detects the second transfer material, and the predicted amount of conveyance variation. based on the difference between the image forming apparatus according to any one of claims 1 to 5, characterized in that to determine the between the first transportable Okutoki.

The control means transports the second transfer material from an average transport variation amount obtained by averaging the transport variation amounts obtained for each of the plurality of transfer materials transported before the second transfer material is transported. The image forming apparatus according to claim 1, wherein an amount of variation is determined.

Wherein, the amount of conveying the variation in the detection means by said second timing the transfer material is detected, and depending on the difference in the amount of conveying the variation that the predicted, between the first transportable Okutoki The image forming apparatus according to claim 1, wherein the image forming apparatus is changed.

The first transport speed is the first transport speed in order to match the timing at which the second transfer material reaches the transfer unit and the timing at which the image formed on the image carrier reaches the transfer unit. The image forming apparatus according to claim 1, wherein the image forming apparatus has a speed for controlling a timing at which the second transfer material reaches the transfer unit.

A loading means for loading the transfer material;
Paper feeding means for feeding the transfer material loaded on the stacking means;
Transfer means for transferring an image formed on the image carrier to a transfer material;
A first detection unit configured to detect the transferred transfer material on a transfer path in which the transfer material is transferred from the paper supply unit to the transfer unit;
A second detection unit that is disposed downstream of the first detection unit and upstream of the transfer unit and detects a conveyed transfer material;
The amount of the first conveyance variation is obtained from the timing when the preceding first transfer material is detected by the first detection means, and from the timing when the subsequent second transfer material is detected by the first detection means. A second transport variation amount is obtained, and based on the first transport variation amount and the second transport variation amount, the first transfer material after the first detection unit is transported . image forming apparatus characterized by and a control means for controlling the inter first transportable Okutoki conveying the second transfer material in the the conveying speed first transport speed.

The control means obtains a timing at which the second transfer material reaches the second detection means when the second transfer material is conveyed at the first conveyance speed, and determines the timing and the second detection means at the obtained timing. 11. The image forming apparatus according to claim 10 , wherein the transport speed of the second transfer material is set to a second transport speed in accordance with the timing at which the second transfer material is detected.

The control unit is configured to calculate an average conveyance variation obtained by averaging an amount of conveyance variation obtained from a timing detected by the first detection unit for each of a plurality of transfer materials conveyed before the second transfer material is conveyed . determine the amount, wherein based on the amount and the amount of the second conveying variations in average transport variation, controls the inter-transport speed and transportable Okutoki of the second transfer material in later the first detection means The image forming apparatus according to claim 10 or 11 .

The control means obtains a timing at which the second transfer material reaches the second detection means when the second transfer material is conveyed at the first conveyance speed. in accordance with the difference between the timing at which the second transfer material is detected, between the first transportable Okutoki conveying the second transfer material in the first conveying speed between the second transportable Okutoki the image forming apparatus according to any Kano preceding claims 10 to 12, characterized in that a.

The first transport speed is the first transport speed in order to match the timing at which the second transfer material reaches the transfer unit and the timing at which the image formed on the image carrier reaches the transfer unit. The image forming apparatus according to claim 10, wherein the transfer material has a speed for controlling a timing at which the second transfer material reaches the transfer unit.