1. A sheet conveying apparatus that conveys a sheet, comprising:
a driving rotation body that has a notch in a circumferential surface thereof;
a driven rotation body that can pressure-contact the circumferential surface of the driving rotation body;
a holding portion that rotatably holds the driven rotation body;
a biasing member that biases the holding portion in a direction in which the driven rotation body is brought into pressure contact with the driving rotation body;
an interlocking mechanism that moves the driven rotation body between a pressure contact position and a separation position in conjunction with rotation of the driving rotation body, the driven rotation body being brought into pressure contact with the driving rotation body at the pressure contact position, the driven rotation body being separated from the driving rotation body at the separation position; and
an abutment portion that abuts the driven rotation body to stop the driven rotation body at the pressure contact position, the driven rotation body being moved in a direction in which the driven rotation body is brought into pressure contact with the driving rotation body by the interlocking mechanism,
wherein the holding portion or the driven rotation body is caused to abut on the abutment portion before the interlocking mechanism brings the driven rotation body into pressure contact with a circumferential surface of the driving rotation body.
2. The sheet conveying apparatus according to claim 1, wherein the driving rotation body includes:
the notch;
a circumferential surface except for the notch; and
a taper portion that coupling the notch and the circumferential surface except for the notch, and
the circumferential surface except for the notch of the driving rotation body is brought into pressure contact with the driven rotation body after the taper portion is brought into pressure contact with the driving rotation body that is stopped while abutting on the abutment portion.
3. The sheet conveying apparatus according to claim 2, wherein the abutment portion is one of a support frame and a guide member, the support frame rotatably supporting the holding portion, the guide member guiding a sheet provided in the support frame.
4. The sheet conveying apparatus according to claim 3, wherein the holding portion is made of a material having an elastic modulus of one of the support frame and the guide member, the holding portion abutting on the support frame and the guide member.
5. The sheet conveying apparatus according to claim 1, wherein the interlocking mechanism includes:
a cam portion that is attached to a rotation shaft of the driving rotation body; and
a turning link portion that is brought into pressure contact with the cam portion to turn the holding portion.
6. The sheet conveying apparatus according to claim 5, wherein the holding portion is rotatably loose-fitted in a turning center of the turning link portion such that the driven rotation body is evenly brought into pressure contact with the driving rotation body.
7. The sheet conveying apparatus according to claim 1, wherein the driving rotation body and the driven rotation body constitute a sheet skew feeding correction mechanism that corrects sheet skew feeding.
8. The sheet conveying apparatus according to claim 1, wherein the driving rotation body and the driven rotation body constitute a crosswise displacement correction mechanism that corrects a sheet displacement in a crosswise direction orthogonal to a sheet conveying direction.
9. An image forming apparatus comprising:
a sheet conveying apparatus that conveys a sheet; and
an image forming portion that forms an image in the sheet conveyed by the sheet conveying apparatus,
wherein the sheet conveying apparatus includes:
a driving rotation body that has a notch in a circumferential surface thereof;
a driven rotation body that can pressure-contact the circumferential surface of the driving rotation body;
a holding portion that rotatably retains the driven rotation body;
a biasing member that biases the holding portion in a direction in which the driven rotation body is brought into pressure contact with the driving rotation body;
an interlocking mechanism that moves the driven rotation body between a pressure contact position and a separation position in conjunction with rotation of the driving rotation body, the driven rotation body being brought into pressure contact with the driving rotation body at the pressure contact position, the driven rotation body being separated from the driving rotation body at the separation position; and
an abutment portion that abuts the driven rotation body to stop the driven rotation body at the pressure contact position, the driven rotation body being moved in a direction in which the driven rotation body is brought into pressure contact with the driving rotation body by the interlocking mechanism, and
wherein the holding portion or the driven rotation body is caused to abut on the abutment portion before the interlocking mechanism brings the driven rotation body into pressure contact with a circumferential surface of the driving rotation body.
10. The image forming apparatus according to claim 9, wherein the driving rotation body includes:
the notch;
a circumferential surface except for the notch; and
a taper portion that coupling the notch and the circumferential surface except for the notch, and
the circumferential surface except for the notch of the driving rotation body is brought into pressure contact with the driven rotation body after the taper portion is brought into pressure contact with the driven rotation body that is stopped while abutting on the abutment portion.
11. The image forming apparatus according to claim 10, wherein the abutment portion is one of a support frame and a guide member, the support frame rotatably supporting the holding portion, the guide member guiding a sheet provided in the support frame.
12. The image forming apparatus according to claim 11, wherein the holding portion is made of a material having an elastic modulus of one of the support frame and the guide member, the holding portion abutting on the support frame and the guide member.
13. The image forming apparatus according to claim 9, wherein the interlocking mechanism includes:
a cam portion that is attached to a rotation shaft of the driving rotation body; and
a turning link portion that is brought into pressure contact with the cam portion to turn the holding portion.
14. The image forming apparatus according to claim 13, wherein the holding portion is rotatably loose-fitted in a turning center of the turning link portion such that the driven rotation body is evenly brought into pressure contact with the driving rotation body.
15. The image forming apparatus according to claim 9, wherein the driving rotation body and the driven rotation body constitute a sheet skew feeding correction mechanism that corrects sheet skew feeding.
16. The image forming apparatus according to claim 9, wherein the driving rotation body and the driven rotation body constitute a crosswise displacement correction mechanism that corrects a sheet displacement in a crosswise direction orthogonal to a sheet conveying direction.
17. An image reading apparatus comprising:
a sheet conveying apparatus that conveys a sheet; and
an image reading portion that reads an image in the sheet conveyed by the sheet conveying apparatus,
wherein the sheet conveying apparatus includes:
a driving rotation body that has a notch in a circumferential surface thereof;
a driven rotation body that can pressure-contact the circumferential surface of the driving rotation body;
a holding portion that rotatably holds the driven rotation body;
a biasing member that biases the holding portion in a direction in which the driven rotation body is brought into pressure contact with the driving rotation body;
an interlocking mechanism that moves the driven rotation body between a pressure contact position and a separation position in conjunction with rotation of the driving rotation body, the driven rotation body being brought into pressure contact with the driving rotation body at the pressure contact position, the driven rotation body being separated from the driving rotation body at the separation position; and
an abutment portion that abuts the driven rotation body to stop the driven rotation body at the pressure contact position, the driven rotation body being moved in a direction in which the driven rotation body is brought into pressure contact with the driving rotation body by the interlocking mechanism, and
wherein the holding portion or the driven rotation body is caused to abut on the abutment portion before the interlocking mechanism brings the driven rotation body into pressure contact with a circumferential surface of the driving rotation body.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A light-emitting device comprising:
a first electrode;
an EL layer over the first electrode; and
a second electrode over the EL layer,
wherein the second electrode comprises:
a first film comprising an inorganic material over the EL layer;
a second film comprising an organic material over the first film; and
a third film comprising an inorganic material over the second film.
2. A light emitting device according to claim 1, wherein the first film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
3. A light emitting device according to claim 1, wherein the third film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
4. A light emitting device according to claim 1, wherein the third film comprises an alloy of aluminum and one of alkali metal and alkaline earth metal.
5. A light emitting device according to claim 1, wherein the second film is a conductive resin film.
6. A light emitting device according to claim 1, wherein the second film includes at least one of alkali metal and alkaline earth metal.
7. A light-emitting device comprising:
a first electrode;
an EL layer over the first electrode; and
a second electrode over the EL layer,
wherein the second electrode comprises:
a first film comprising an inorganic material over the EL layer;
a second film comprising an organic material over the first film; and
a third film comprising an inorganic material over the second film, and
wherein an end surface of the second film is covered by the third film.
8. A light emitting device according to claim 7, wherein the first film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
9. A light emitting device according to claim 7, wherein the third film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
10. A light emitting device according to claim 7, wherein the third film comprises an alloy of aluminum and one of alkali metal and alkaline earth metal.
11. A light emitting device according to claim 7, wherein the second film is a conductive resin film.
12. A light emitting device according to claim 7, wherein the second film includes at least one of alkali metal and alkaline earth metal.
13. A light-emitting device comprising:
a first substrate:
a first electrode over the first substrate;
an EL layer over the first electrode;
a second electrode over the EL layer; and
a second substrate over the second electrode,
wherein the second electrode comprises:
a first film comprising an inorganic material over the EL layer;
a second film comprising an organic material over the first film; and
a third film comprising an inorganic material over the second film,
wherein an end surface of the second film is covered by the third film, and
wherein an emission light from the EL layer is transmitted and emitted through the first substrate.
14. A light emitting device according to claim 13, wherein the first film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
15. A light emitting device according to claim 13, wherein the third film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
16. A light emitting device according to claim 13, wherein the third film comprises an alloy of aluminum and one of alkali metal and alkaline earth metal.
17. A light emitting device according to claim 13, wherein the second film is a conductive resin film.
18. A light emitting device according to claim 13, wherein the second film includes at least one of alkali metal and alkaline earth metal.
19. A light-emitting device comprising:
a first substrate:
a first electrode over the first substrate;
an EL layer over the first electrode;
a second electrode over the EL layer; and
a second substrate over the second electrode,
wherein the second electrode comprises:
a first film comprising an inorganic material over the EL layer;
a second film comprising an organic material over the first film; and
a third film comprising an inorganic material over the second film,
wherein an end surface of the second film is covered by the third film, and
wherein an emission light from the EL layer is transmitted and emitted through the second substrate.
20. A light emitting device according to claim 19, wherein the first film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
21. A light emitting device according to claim 19, wherein the third film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
22. A light emitting device according to claim 19, wherein the third film comprises an alloy of aluminum and one of alkali metal and alkaline earth metal.
23. A light emitting device according to claim 19, wherein the second film is a conductive resin film.
24. A light emitting device according to claim 19, wherein the second film includes at least one of alkali metal and alkaline earth metal.
25. A light-emitting device comprising:
a transistor;
a first electrode electrically connected to the transistor;
an EL layer over the first electrode; and
a second electrode over the EL layer,
wherein the second electrode comprises:
a first film comprising an inorganic material over the EL layer;
a second film comprising an organic material over the first film; and
a third film comprising an inorganic material over the second film, and
wherein an end surface of the second film is covered by the third film.
26. A light emitting device according to claim 25, wherein the first film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
27. A light emitting device according to claim 25, wherein the third film is one of a metal film, a transparent conductive film, and a laminate of a metal film and a transparent conductive film.
28. A light emitting device according to claim 25, wherein the third film comprises an alloy of aluminum and one of alkali metal and alkaline earth metal.
29. A light emitting device according to claim 25, wherein the second film is a conductive resin film.
30. A light emitting device according to claim 25, wherein the second film includes at least one of alkali metal and alkaline earth metal.