Abstract: An image forming apparatus, to which a cartridge including a developer accommodating portion for accommodating a developer is detachably mountable, includes an image bearing member, an exposure unit configured to expose the image bearing member to light to form an electrostatic latent image on the image bearing member, a light receiving sensor provided in the cartridge and configured to receive the light emitted from the exposure unit, and a controller configured to detect vibration of the cartridge from a light reception value of the light received by the light receiving sensor. In a case in which the cartridge is removed from the image forming apparatus, the light receiving sensor is removed from the image forming apparatus together with the cartridge.

Abstract: An aspect of the present invention relates to a resin composition containing a maleimide compound (A) having at least one selected from an alkyl group having 6 or more carbon atoms and an alkylene group having 6 or more carbon atoms, and a hydrocarbon-based compound (B) represented by the following Formula (1). In Formula (1), X represents a hydrocarbon group having 6 or more carbon atoms and containing at least one selected from an aromatic cyclic group or an aliphatic cyclic group, and n represents an integer from 1 to 10.

Abstract: An aspect of the present invention relates to a resin composition containing a maleimide compound (A) having an indane structure in the molecule and a hydrocarbon-based compound (B) represented by the following Formula (1). In Formula (1), X represents a hydrocarbon group having 6 or more carbon atoms and containing at least one selected from an aromatic cyclic group and an aliphatic cyclic group. n represents an integer from 1 to 10.

Abstract: An aspect of the present invention relates to a resin composition containing a hydrocarbon-based compound (A) represented by the following Formula (1) [In Formula (1), X represents a hydrocarbon group having 6 or more carbon atoms and containing at least one selected from an aromatic cyclic group or an aliphatic cyclic group, and n represents an integer from 1 to 10]; and a styrenic polymer (B) that is solid at 25° C. and is different from the hydrocarbon-based compound (A).

Abstract: A resin composition includes: a compound (A) represented by the following formula wherein X is 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-yl-10-oxide and Y is a protecting group; and a thermosetting resin (B) containing at least one selected from among an epoxy resin, a polyphenylene ether resin, a cyanate ester resin, a phenol resin, an active ester resin, a benzoxazine resin, a maleimide resin, an acrylic resin, a methacrylic resin, a vinyl resin, an allyl resin, a propenyl resin, and a hydrocarbon-based resin having an unsaturated double bond.

Abstract: An aspect of the present invention is a resin composition containing at least one of a polyphenylene ether compound (A), having at least one of a group represented by the following Formula (1) and a group represented by the following Formula (2) in the molecule, and a maleimide compound (B); and ceramic particles (C) including aluminum titanate particles (C1). In Formula (1), p represents 0 to 10, Ar represents an arylene group, and R1 to R3 each independently represent a hydrogen atom or an alkyl group. In Formula (2), R4 represents a hydrogen atom or an alkyl group.

Abstract: A resin composition contains a curable resin. A quantity of outgas emitted from a cured product of the resin composition at a temperature falling within a range from 30° C. to 550° C. when the cured product is subjected to a thermal gravimetric analysis with a temperature increased from 30° C. to 800° C. at a temperature increase rate of 90° C. per minute is less than 27% by mass with respect to an entire mass of the cured product.

Abstract: A metal-clad laminate includes: an insulating layer; and a metal layer stacked on the insulating layer. The insulating layer includes: a first layer; and a second layer interposed between the first layer and the metal layer. The first layer contains a cured product of a first resin composition containing composite particles. The second layer contains a cured product of a second resin composition. The first resin composition contains composite particles, each having a core containing a fluororesin and a shell containing a silicon oxide that coats the core at least partially. The second resin composition may or may not contain composite particles. When the second resin composition contains the composite particles, a ratio of the composite particles in the second resin composition to solid content of the second resin composition is lower than a ratio of the composite particles in the first resin composition to solid content of the first resin composition.

Abstract: A metal-clad laminate includes: an insulating layer; and a metal layer stacked on the insulating layer. The insulating layer includes: a first layer; and a second layer interposed between the first layer and the metal layer. The first layer contains a cured product of a first resin composition containing composite particles. The second layer contains a cured product of a second resin composition. The first resin composition contains composite particles, each having a core containing a fluororesin and a shell containing a silicon oxide that coats the core at least partially. The second resin composition may or may not contain composite particles. When the second resin composition contains the composite particles, a ratio of the composite particles in the second resin composition to solid content of the second resin composition is lower than a ratio of the composite particles in the first resin composition to solid content of the first resin composition.

Abstract: A resin composition contains: a modified polyphenylene ether compound (A) having, at one terminal, a group with an unsaturated double bond; a cross-linking agent (B) having a carbon-carbon double bond; a hindered amine-based polymerization inhibitor (C); and a solvent (D).