Apparatus for electrostatically absorbing an image supporting material on an image supporting carrying member based on the kind of material used

An image forming apparatus comprising:

• image forming means for forming an image on an image supporting member at an image forming position;
• movable carrying means or carrying said image supporting member and for conveying said image supporting member to said image forming position in order to perform said image formation;
• adsorption means for causing said image supporting member to be adsorbed onto said carrying means, provided at a more upstream side than said image forming position in the direction of movement of said carrying means;
• detection means for detecting a kind of said image supporting member;
• and
• control means for controlling adsorption force between said image supporting member and said carrying means by said adsorption means according to the kind of image supporting member detected by said detection means.

An image forming apparatus comprising:

• a movable image carrying member;
• image forming means for forming an image on said image carrying member;
• transfer means for transferring said image on the image carrying member formed by said image forming means to an image supporting member at a transfer position;
• carrying means for carrying said image supporting member and for conveying said image supporting member to said transfer position in order to perform said transfer, said carrying means comprises a sheet member for carrying the image supporting member, said sheet member comprising a dielectric sheet;
• adsorption means for causing said image supporting member to be electrostatically adsorbed onto said carrying means by supplying said image supporting member with electric charges, said adsorption means first carrying said images supporting member to said carrying means;
• detection means for detecting the relative dielectric constant of said image supporting member;
• and
• control means for controlling an electric-charge supply amount by said adsorption means according to the relative dielectric constant detected by said detection means.

An image forming apparatus comprising:

• a movable image carrying member;
• image forming means for forming an image on said image carrying member;
• transfer means for transferring an image on the image carrying member formed by said image forming means to an image supporting member at a transfer position;
• carrying means for carrying said image supporting member and for conveying said image supporting member to said transfer position in order to perform said transfer;
• adsorption means for causing said image supporting member to be adsorbed onto said carrying means, said adsorption means carrying said image supporting member to said carrying means at first;
• control means for controlling adsorption force between said image supporting member and said carrying means by said adsorption means according to the kind of image supporting member.