Abstract: Following the end of warm-up, a control unit confirms whether the warm-up time is 10 seconds or more. If the warm-up time is 10 seconds or more, the control unit controls a maximum lamp turn-on time for alternate turn-on at 1.0 second as long as an idle time (t) from the end of warm-up is less than two minutes. When the idle time exceeds two minutes, the control unit controls the maximum lamp turn-on time for alternate turn-on at 2.5 seconds.

Abstract: At least, a temperature of the surface of a heating roller 13 in a region through which paper of small width passes, and a temperature of the surface of a heating roller 13 in a region through which paper of small width does not pass where paper of large width is carried are detected. Warming up operation is continued, and when a temperature of the surface of a heating roller 13 in the either region reaches a temperature capable of fixing, a ready display is lighted. Thereafter, the surface of the heating roller 13 not having reached a temperature capable of fixing is heated by forcibly lighting a heater lamp till the fixed conditions are satisfied, and at the time of the forcible lighting operation, the surface of the heating roller 13 in a region having reached a temperature capable of fixing is not heated.

Abstract: An image forming apparatus according to an embodiment of the present invention can suppress overshoot by shifting the OFF timing of the central heater lamp from that of the end heater lamp or the recovering timing of the central heater lamp from that of the end heater lamp, when the heating member at a second temperature dropped from a first temperature (optimum fixing temperature) is returned to the first temperature again.

Abstract: A photopolymerizable composition comprising at least a polymerizable compound having an ethylenically unsaturated bond, a photo-radical generator, and an amine compound represented by the following Formula (I): wherein R1 and R2 independently represent an optionally substituted aliphatic group, or may be bound to each other to form a ring, A represents an optionally substituted divalent aliphatic linking group, or may be bound to R1 or R2 to form a ring, B represents an optionally substituted divalent linking group selected from an amide linkage, a sulfonamide linkage and an ester linkage, or may be bound to R1 or R2 to form a ring, and Ar represents an optionally substituted aromatic group.

Abstract: The present invention provides a photopolymerizable composition, which is highly sensitive to visible light rays to IR rays and has an excellent raw storage property, and a recording material capable of carrying out highly sensitive image recording and having an excellent raw storage property and humidity dependency. Namely, the invention provides a photopolymerizable composition containing at least a polymerizable compound having an ethylenic unsaturated bond, a photoradical generating agent, and a thiol compound represented by the following general formula (I) and a recording material using the photopolymerizable composition: [R represents an alkyl or an aryl, either of which may have substituents; A represents an atom group forming a 5-member or 6-member heteroring having an N?C—N portion and carbon atoms and A may further have a substituent group.].

Abstract: A fixing device of this invention takes up web slack prior to image formation when a cleaning mechanism is dismounted from the fixing device or a web reaches its end. This can prevent a poor-quality image generated by web slack upon replacing the cleaning mechanism.

Abstract: The present invention provides a photopolymerizable composition comprising a polymerizable compound including an addition-polymerizable unsaturated bond, a photo-radical-generating agent, and an amine compound represented by the following general formula (I) and a recording material comprising a recording layer containing the photopolymerizable composition: in which: R1 and R2 each represent a hydrogen atom or an aliphatic group, and may be the same as or different from one another; each aliphatic group may be further substituted; R1 and R2 may form a ring by bonding directly or via a substituent; and R3 represents a benzyl group, which may be further substituted.

Abstract: A fixing device according to this invention includes a notifying mechanism which requests replacement of a web when the length up to the end portion of the web capable of taking unnecessary toner becomes shorter than a predetermined length. The degree of moving an unused portion of the web to a web-taking unit is reduced at a predetermined ratio until the web is replaced.

Abstract: A fixing device according to this invention includes a notifying mechanism which requests replacement of a web when the length up to the end portion of the web capable of taking unnecessary toner becomes shorter than a predetermined length. The degree of moving an unused portion of the web to a web-taking unit is reduced at a predetermined ratio until the web is replaced.

Abstract: According to the present invention, a member which can recover unnecessary toner is replaced with unused the member using parameters such as ambient temperature, temperature in the copying machine, density of image information, and step of setting temperatures of rollers on standby to be uniform at a predetermined timing.

Abstract: The present invention provides a photopolymerizable composition containing a polymerizable compound having an ethylenically unsaturated bond, a compound represented by the following general formula (I), and a radical generating agent capable of generating a radical by interacting with the compound represented by the following general formula (I). General Formula (I); In the general formula (I), R1, R2, and R3 each individually represent a hydrogen atom or a monovalent substituent; R4 represents at least one member selected from the group consisting of: a hydrogen atom, an aliphatic group, an aromatic group, and a heterocyclic group; Z1 represents a substituent necessary for allowing the compound represented by the general formula (I) to become a dye; and X− represents a group capable of forming an anion. The invention also provides a recording material in which a recording layer containing the photopolymerizable composition is provided on a support.

Abstract: Provided is a photopolymerizable composition which has a high sensitivity to not only ultraviolet light but also to visible to infrared light.

Abstract: A color filter having a light-transmissive support and two or more color-developing layers, which develop hues differing from each other, laminated on the support. Each color-developing layer is developed into a predetermined color pattern including pixels. The pixels of the developed color patterns of the layers either overlap in a direction of lamination or do not overlap in the direction of lamination. Also provided are a color filter forming material produced by laminating the two or more photosensitive and heat-sensitive color-developing layers on the light-transmissive support, and a process for producing a color filter by exposing each photosensitive and heat-sensitive color-developing layer of the above color filter forming material to form a predetermined pattern, heating the photosensitive and heat-sensitive color-developing layers, and fixing the developed color patterns.

Abstract: A fixing device according to this invention includes a notifying mechanism which requests replacement of a web when the length up to the end portion of the web capable of taking unnecessary toner becomes shorter than a predetermined length. The degree of moving an unused portion of the web to a web-taking unit is reduced at a predetermined ratio until the web is replaced.

Abstract: According to the present invention, a member which can recover unnecessary toner is replaced with unused the member using parameters such as ambient temperature, temperature in the copying machine, density of image information, and step of setting temperatures of rollers on standby to be uniform at a predetermined timing.

Abstract: A fixing device of this invention takes up web slack prior to image formation when a cleaning mechanism is dismounted from the fixing device or a web reaches its end. This can prevent a poor-quality image generated by web slack upon replacing the cleaning mechanism.

Abstract: The present invention provides a photopolymerizable composition, which is highly sensitive to visible light rays to IR rays and has an excellent raw storage property, and a recording material capable of carrying out highly sensitive image recording and having an excellent raw storage property and humidity dependency.

Abstract: The present invention provides a photopolymerizable composition containing a polymerizable compound having an ethylenically unsaturated bond, a compound represented by the following general formula (I), and a radical generating agent capable of generating a radical by interacting with the compound represented by the following general formula (I).

Abstract: A coil is mounted within a heating roller. Self-generation of heat by the heating coil occurs as a result of a high-frequency magnetic field generated by the coil. The coil is rotated, as required, within the heating roller. The direction of the high-frequency magnetic field from the coil varies with the rotation of the coil.

Abstract: The present invention provides a photopolymerizable composition comprising a polymerizable compound including an addition-polymerizable unsaturated bond, a photo-radical-generating agent, and an amine compound represented by the following general formula (I) and a recording material comprising a recording layer containing the photopolymerizable composition: 1