JP2001002279A5 - - Google Patents

Description

The present invention has been made to solve the problems described above, according to the type of recording paper, when changing the resolution and the conveying speed of the resolution and the image forming unit of the image information, perform the pre-feed by controlling so as not, and an object thereof is to provide a fixing failure, the image output apparatus and its control method capable of preventing a failure due to degradation and image expansion and contraction of the image due to transfer failure such as a low cost.

[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is an image output apparatus which performs prefeed for conveying recording paper to an image forming unit in advance when printing an image on recording paper based on image information input from an information processing apparatus. The detection means for detecting the type of recording paper , the change means for changing the transport speed of the image forming means according to the detection result of the detection means, and the change means for changing And control means for controlling so as not to perform pre-feed.

Further, in order to achieve the above object, according to the present invention, when an image is printed on a recording sheet based on image information input from an information processing apparatus, an image output is carried out in which the recording sheet is transported to the image forming unit in advance. A control method of an apparatus, comprising: a detection step of detecting a type of the recording paper ; a change step of changing a conveyance speed of the image forming unit according to a detection result in the detection step; change in the change step Control step of controlling not to perform the pre-feed.

[0080]
【Effect of the invention】
As described above, according to the present invention, when changing the resolution of the image information and the resolution and the conveyance speed of the image forming means according to the type of recording paper , control is performed so as not to perform the prefeed. As a result, it is possible to prevent the quality deterioration of the image due to the fixing failure, the transfer failure and the like at low cost and the failure due to the image expansion and contraction.

Claims (22)

The image output apparatus is configured to perform a prefeed for conveying the recording sheet to the image forming unit in advance when printing an image on the recording sheet based on the image information input from the information processing apparatus.
Detection means for detecting the type of the recording paper;
Changing means for changing the transport speed of the image forming means in accordance with the detection result of the detection means;
An image output apparatus comprising: control means for controlling not to perform the pre-feed when making a change by the changing means. 2. The image output apparatus according to claim 1, wherein the changing unit changes the recording sheet if the recording sheet is a recording sheet of a specific size. The image output apparatus according to claim 1, wherein the recording sheet of the specific size is a postcard, a reciprocating postcard, or an envelope. The image output apparatus according to claim 1, wherein the changing unit performs the change when the recording sheet is smaller than a predetermined width. 2. The image output apparatus according to claim 1, wherein the changing unit changes the recording sheet if the recording sheet is a recording sheet of a specific material. 2. The image output apparatus according to claim 1, wherein the changing unit changes the recording sheet if the recording sheet is a recording sheet having a specific thickness. The image output apparatus according to any one of claims 1 to 6, wherein the changing unit further changes the resolution of the image forming unit. It is a control method of an image output apparatus that performs a prefeed for conveying a recording sheet to an image forming unit in advance when printing an image on a recording sheet based on image information input from an information processing apparatus.
Detecting the type of the recording paper;
A changing step of changing the transport speed of the image forming means in accordance with the detection result in the detection step;
And a control step of controlling not to perform the pre-feed when the change is performed in the changing step. 9. The method according to claim 8, wherein the changing step further changes the resolution of the image forming means. A computer readable recording medium storing a program for causing a computer to execute the control method of an image output apparatus according to claim 8. An image information expansion processing unit (hereinafter referred to as a controller) that interprets image information input from an information processing device, converts it into bitmap data, and converts it into a video signal, and conveys a recording sheet in synchronization with the video signal. And an image forming unit (hereinafter referred to as an engine) for printing on a recording sheet and discharging the recording sheet;
The recording sheet storage unit stores the recording sheet before printing, and the recording sheet is transported from the recording sheet storage unit to the front stage of printing on the recording sheet before the controller sends the print start signal to the engine. An image output apparatus having a means (hereinafter referred to as a prefeed),
Means for selecting one of a plurality of engine resolutions having a plurality of resolutions (hereinafter referred to as engine resolutions) in the engine;
Means for selecting one of a plurality of transport speeds having a plurality of transport speeds in the engine;
A means for changing the engine resolution and the conveyance speed according to the type (material, shape, size, thickness, weight, etc.) of the recording paper;
An image output device characterized by comprising means for controlling not to perform the pre-feed when changing the engine resolution and the transport speed; It has means for specifying one of a plurality of recording paper sizes (hereinafter, paper sizes), and changes the engine resolution and the transport speed only when the paper size is a specific paper size. The image output apparatus according to claim 11, characterized in that: 12. The image output apparatus according to claim 11, wherein the specific sheet size is a postcard, a reciprocating postcard, or an envelope. The engine resolution and the conveyance speed are provided only when the width of the recording sheet (direction perpendicular to the conveyance direction; hereinafter, sheet width) is detected and the sheet width is smaller than a specific sheet width. The image output device according to claim 11, wherein the image output device is changed. The engine resolution and the conveyance speed are changed only when the sheet type is a specific sheet type, having means for specifying one of a plurality of materials and thicknesses (hereinafter, sheet types) of the recording sheet. The image output apparatus according to claim 11, wherein: The image output apparatus according to claim 11, wherein the specific sheet type is a thick recording sheet. An image information expansion processing unit (hereinafter referred to as a controller) that interprets image information input from an information processing device, converts it into bitmap data, and converts it into a video signal, and conveys a recording sheet in synchronization with the video signal. And an image forming unit (hereinafter referred to as an engine) for printing on a recording sheet and discharging the recording sheet;
The recording sheet storage unit stores the recording sheet before printing, and the recording sheet is transported from the recording sheet storage unit to the front stage of printing on the recording sheet before the controller sends the print start signal to the engine. An image output apparatus having a means (hereinafter referred to as a prefeed),
Means for selecting one of a plurality of transport speeds having a plurality of transport speeds in the engine;
A means for changing the transport speed in accordance with the type (material, shape, size, thickness, weight, etc.) of the recording paper;
An image output device characterized by including means for controlling so as not to perform the pre-feed when changing the transport speed. A means is provided for specifying one of a plurality of recording paper sizes (hereinafter, paper sizes), and the conveyance speed is changed only when the paper size is a specific paper size. Item 18. An image output device according to item 17. 18. The image output apparatus according to claim 17, wherein the specific sheet size is a postcard, a reciprocating postcard, or an envelope. A means is provided for detecting the width of the recording sheet (direction perpendicular to the conveying direction; hereinafter, sheet width), and the conveying speed is changed only when the sheet width is smaller than a specific sheet width. The image output apparatus according to claim 17, wherein The recording paper has a means for specifying one of a plurality of materials and thicknesses (hereinafter, paper types) of the recording paper, and the conveyance speed is changed only when the paper type is a specific paper type. The image output device according to claim 17. The image output apparatus according to claim 17, wherein the specific sheet type is a thick recording sheet.