Image forming apparatus
First Claim
Patent Images
1. An image forming apparatus comprising:
- an endless conveyance belt which holds and conveys a recording medium;
a nip roller unit which presses a face of the conveyance belt on which the recording medium is held, rotates in accordance with movement of the conveyance belt, and includes a pair of first end pressing parts arranged in the width direction of the conveyance belt at a distance corresponding to the recording medium having a first size, and a first center pressing part arranged between the first end pressing parts; and
a recording head which has a plurality of ink ejecting holes, and ejects ink from the plurality of ink ejecting holes onto the conveyed recording medium to thereby form an image, wherein a pressing force of the first center pressing part toward the conveyance belt is set to be smaller than pressing forces of the pair of first end pressing parts toward the conveyance belt.
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Abstract
In an image forming apparatus, a nip roller group for pressing a face of a conveyance belt on which a recording medium is held includes a pair of first end pressing parts which are arranged in the width direction of the conveyance belt at a distance corresponding to the recording medium having a predetermined size, and a first center pressing part which is arranged between the pair of first end pressing parts. Herein, a pressing force of the first center pressing part is set to be smaller than pressing forces of the first end pressing parts.
33 Citations
24 Claims
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1. An image forming apparatus comprising:
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an endless conveyance belt which holds and conveys a recording medium;
a nip roller unit which presses a face of the conveyance belt on which the recording medium is held, rotates in accordance with movement of the conveyance belt, and includes a pair of first end pressing parts arranged in the width direction of the conveyance belt at a distance corresponding to the recording medium having a first size, and a first center pressing part arranged between the first end pressing parts; and
a recording head which has a plurality of ink ejecting holes, and ejects ink from the plurality of ink ejecting holes onto the conveyed recording medium to thereby form an image, wherein a pressing force of the first center pressing part toward the conveyance belt is set to be smaller than pressing forces of the pair of first end pressing parts toward the conveyance belt. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An image forming apparatus comprising:
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an endless conveyance belt which holds and conveys a recording medium;
nip roller means which presses a face of the conveyance belt on which the recording medium is held, rotates in accordance with movement of the conveyance belt, and includes a pair of first end pressing parts arranged in the width direction of the conveyance belt at a distance corresponding to the recording medium having a first size, and a first center pressing part arranged between the first end pressing parts; and
a recording head which has a plurality of ink ejecting holes, and ejects ink from the plurality of ink ejecting holes onto the conveyed recording medium to thereby form an image, wherein a pressing force of the first center pressing part toward the conveyance belt is set to be smaller than pressing forces of the pair of first end pressing parts toward the conveyance belt. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification