Abstract: An elastic member includes a substrate, and a single-layer elastic layer provided on the substrate. An elastic modulus of the elastic layer at a distortion of 10% is 0.15 MPa or more. When in the elastic layer, a thickness from the surface on a side opposite to the substrate to the substrate-side surface is t, and when in the elastic layer, a region from the surface on the side opposite to the substrate to a position at a depth of t/2.125 is referred to as an “outer surface portion”, and a region from the substrate-side surface to the position at a depth of t/2.125 is referred to as an “inner surface portion”, a ratio (elastic modulus of outer surface portion/elastic modulus of inner surface portion) of an elastic modulus of the outer surface portion to an elastic modulus of the inner surface portion is 0.8 or less.

Abstract: An intermediate transfer member (ITM) for use in a printing system to transport an ink image from an image forming station to an impression station for transfer of the ink image from the ITM onto a printing substrate, wherein the ITM is an endless flexible belt of substantially uniform width which, during use, passes over drive and guide rollers and is guided through at least the image forming station by means of guide channels that receive formations provided on both lateral edges of the belt, wherein the formations on a first edge differ from the formations on the second edge by being configured for providing the elasticity desired to maintain the belt taut when the belt is guided through their respective lateral channels.

Abstract: An image forming apparatus includes a memory and a processor configured to, when humidity detected by a humidity sensor is equal to or above a preset value with paper sheets stacked in a paper sheet holder being fed to an image forming unit, perform control to set a separation operation time used to separate in a separation operation a single paper sheet from multiple paper sheets stacked in the paper sheet holder to be longer than the separation operation time used when the detected humidity is lower than the preset value.

Abstract: An imaging device has first image transfer from photoconductive drums to an intermediate transfer member (ITM) and second image transfer from the ITM to media. Transfer rolls oppose the drums from an opposite side of the ITM and electrically ground to a frame of the imaging device by mechanical connection. The rolls may be laterally offset from the drums. The ITM has relatively low surface and volume resistivity. An imaging subassembly may include the frame, the ITM, and the transfer rolls grounded to the frame.

Abstract: An electrostatic charge image developing toner includes a toner particle, a lubricant particle that is externally added to the toner particle, and a strontium titanate particle that is externally added to the toner particle, that has an average primary particle diameter of 10 nm or more and 100 nm or less, that has an average primary particle circularity of 0.82 or more and 0.94 or less, and that has a primary particle circularity that becomes 84% of accumulation of more than 0.92.

Abstract: An image-forming apparatus includes a charging unit that charges toner with polarity opposite to a normal charging polarity of the toner and a control unit that performs collection operation for the toner charged with the opposite polarity by the charging unit. The control unit causes a first power supply to apply a first voltage having the opposite polarity to a first transfer member while first and second image bearing members are in contact with an intermediate transfer member. The control unit causes the first power supply to apply a second voltage having the opposite polarity and higher in absolute value than the first voltage to the first transfer member while the first image bearing member is in contact with the intermediate transfer member and the second image bearing member is separated from the intermediate transfer member.

Abstract: An image formation apparatus having a recording medium held between a photosensitive drum and a transfer belt and transferring a toner image from the photosensitive drum to the recording medium includes: a first heating unit to which power is supplied directly from outside when power of the apparatus is off; a second heating unit used in heating control when the power of the apparatus is on; a humidity detection unit configured to detect humidity inside the apparatus; and a control unit configured to, when the power of the apparatus is on, heat the transfer belt by controlling the first heating unit and the second heating unit on the basis of output of the humidity detection unit, wherein the transfer belt is heated by the first heating unit when the power of the apparatus is off.

Abstract: A belt tension adjustment mechanism provided on an inner side of an endless intermediate transfer belt and applying a tension to the intermediate transfer belt being rotated when a toner image is transferred on the intermediate transfer belt, said belt tension adjustment mechanism includes a holder having an opening section at one surface thereof; and an elastic member contained to be fixed in the holder while being compressed in a running direction of the intermediate transfer belt and having a convex section, wherein the convex section protrudes from the opening section of the holder toward a direction orthogonal to an image transfer surface of the intermediate transfer belt and is in direct contact with the intermediate transfer belt.

Abstract: A support material toner particle for use in xerographic additive manufacturing includes a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer to be within about 1° C. to about 20° C. of a desired build material toner Tg. A xerographic toner system includes a build toner material and a support toner material, the support toner material includes a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer to be within about 1° C. to about 20° C. of the build material toner Tg. A method of making a support toner material includes blending polyvinyl alcohol with blend additives including a chitosan and polyvinylpyrrolidone and forming support toner particles after the blending step.

Abstract: A fluid ejection device has a fluid ejection head that ejects fluid droplets onto printing paper; a carriage that carries the fluid ejection head; and a static elimination member or charged member affixed to either or both the fluid ejection head and carriage. The static elimination member is configured to contactlessly eliminate the electric charge of an object, and the charged member has a polarized charge.

Abstract: An image forming device includes a main casing, a process cartridge, a sheet passage, and a first guide. The process cartridge includes a photosensitive body, and a transfer member, and is configured to be attachable to and detachable from the main casing. The sheet passage extends in a first direction and is configured to allow a sheet to pass between the photosensitive body and the transfer member. The first guide is configured to guide the process cartridge such that the process cartridge is attachable to and detachable from the main casing. The first guide has a support portion extending in a second direction substantially perpendicular to the first direction and configured to support the process cartridge in a state where the process cartridge is attached to the main casing.

Abstract: An image forming apparatus includes a control portion that controls, before performing continuous image formation on a plurality of transfer materials, a voltage to be applied to a primary transfer member for primary transfer during the continuous image formation, and a correction unit that corrects the primary transfer voltage during the continuous image formation. The correction unit can perform a first mode for controlling the primary transfer voltage according to a target value determined by the control portion, and a second mode for changing the target value and controlling the primary transfer voltage according to the changed value. The control portion performs the first mode if a detected electric resistance is a first value or lower, or a second value, greater than the first value, or higher, and performs the second mode if the resistance is higher than the first value and lower than the second value.

Abstract: A device for transferring images from an image donating member to an image receiving medium comprises a substrate, at least two electrodes disposed on the substrate, and at least one layer of coating disposed on the substrate having an outer surface for forming a nip region with the image donating member. The at least two electrodes are controllable to produce an electric field and control a position thereof at the nip region to allow transfer of an image from the image donating member to the image receiving medium in an image transfer operation.

Abstract: An image forming apparatus includes a main body, a sheet stack unit, an endless intermediate transfer member, a first transfer member for transferring a toner image onto the sheets conveyed from the sheet stack unit, at a nip formed between the intermediate transfer member and the first transfer member, and a second transfer member. In addition, a first voltage applying device applies a voltage to the first transfer member, a second voltage applying device applies a voltage having an opposite polarity to the second transfer member, and a controller controls the first and second voltage applying devices.

Abstract: Provided is an image forming system having a first image forming apparatus and a second image forming apparatus, the image forming system including: a first image forming unit provided to the first image forming apparatus and forming an image on a first surface of a recording sheet; and a second image forming unit provided to the second image forming apparatus and forming an image on a second surface of the recording sheet on the first surface of which the image has been formed by the first image forming unit, in which, when the first image forming unit and the second image forming unit form pattern images for image position adjustment on the recording sheet, the first image forming unit and the second image forming unit form a first pattern image and a second pattern image on the same surface of the recording sheet.

Abstract: A paper stripping member is removably supported by a supporting member disposed facing a circumferential surface of a photoreceptor drum, and strips a paper sheet off the circumferential surface. The paper stripping member includes an acute-shaped stripping nail, a holding member and a cover member. The holding member is configured removably from the supporting member, and holds the stripping nail in such a manner that the stripping nail extends toward the circumferential surface. The cover member is configured removably from the holding member, and covers at least part of the stripping nail in the extending direction of the stripping nail in a state where the cover member is attached to the holding member.

Abstract: An object of the invention is to cause a transfer device to make more stable contact with a belt, thus yielding preferable transfer performance. In an image-forming apparatus 100 in which the transfer device has a sheet member 52, the sheet member 52 includes a conductive sheet 52b, and an electrical connection path section (power source connecting section 55) for supplying voltage to the conductive sheet 52b from the primary transfer power source 16, and the power source connecting section 55 is arranged outside an image formation enabling region Lp where a toner image can be formed on a photosensitive drum 1, in a perpendicular direction to the direction of movement of the intermediate transfer belt 7.

Abstract: An image forming apparatus includes an image bearing member for bearing a toner image, a movable endless transfer belt for transferring the toner image from the image bearing member onto a transfer material, and a transfer device for transferring the toner image from the image bearing member toward the transfer belt. The transfer device includes a transfer member for sliding on an inner surface of the transfer belt in contact with the inner surface, a supporting member for supporting the transfer member, and an urging member for urging the supporting member toward the transfer belt, wherein the transfer member contacts the inner surface of the transfer belt at a contact surface thereof without rotation relative to the supporting member during movement of the transfer belt. The supporting member is rotatable about a center axis during movement of the transfer belt, and the contact surface is convex with predetermined curvature toward the transfer belt.

Abstract: A method for producing a printed material, a method for producing a dye-printed material, a printing apparatus, and a dye-printing system have a good transfer property when a dry toner including a dye is electrostatically transferred to a base material, such as a fabric, based on an electrophotographic system or the like. The methods include a step of providing at least one type of dry toner containing a dye component and a binder resin to a charged body, a step of transferring the dry toner from the charged body to a base material, and a step of fixing the dry toner on the base material. In the transfer step, an electric field is applied between the charged body and the base material to fly the dry toner on the charged body from the charged body to the base material.

Abstract: An image forming apparatus includes: an image bearing member for bearing a toner image; a belt for conveying the toner image; and a transfer device for rubbing the belt, and a surface of the transfer device, which is brought into contact with the belt includes linear concave portions or linear convex portions. The image forming apparatus of the present invention prevents a friction force between the belt and the transfer device rubbing the belt from increasing and brings a transfer member into a stable contact with the belt for conveying the toner image, thereby suppressing increase in drive torque of the belt which rubs the transfer device and suppressing occurrence of image failure.

Abstract: An image forming apparatus includes an image bearing member that carries a toner image, a rotatable endless belt facing the image bearing member, and a transfer device arranged on an inner peripheral side of the belt and transferring a toner image from the image bearing member to the belt. The transfer device includes a sheet member having conductivity and having a free end and an opposite end which is fixed. In addition, a support member supports and contacts the sheet member, and a securing member secures the sheet member. The sheet member at least has a first region secured by the securing member, a second region in contact with the support member, a third region separated from the support member and the belt, and a fourth region separated from the support member and in contact with the belt. The first region, the second region, the third region and the fourth region are located in order from an upstream side toward a downstream side in a rotational direction of the belt.

Abstract: An electronic paper structure is disclosed, which includes a hard substrate, a flexible substrate, at least one magnetic device for fastening the flexible substrate on the hard substrate temporally, a drive substrate formed on the flexible substrate, an electronic paper display layer formed on the drive substrate, and a protect layer formed on the electronic paper display layer. An electronic paper fabricating method using the same is also disclosed.

Abstract: An image forming apparatus includes a movable belt; a transfer member opposed to the image bearing member with the belt therebetween; wherein the transfer member has a contact surface substantially parallel with a surface of the belt and contacted to the belt, and wherein when the belt is moving, the belt rubs the contact surface, and a toner image is transferred from such a part of image bearing member as is opposed to the contact surface; and a supporting member for supporting the transfer member, the supporting member being swingable.

Abstract: In existing image forming apparatuses, it is difficult to maintain each of a primary transfer member and a secondary transfer member at an optimum potential. An image forming apparatus includes a voltage maintenance element connected to a secondary transfer counter roller and a primary transfer member. The voltage maintenance element maintains each of the secondary transfer counter roller and the primary transfer member at a predetermined potential or higher. By using the voltage maintenance element, each of a secondary transfer roller and the primary transfer member is set to an optimum potential by a single transfer power supply.

Abstract: An image forming apparatus includes a movable belt; a transfer member opposed to the image bearing member with the belt therebetween; wherein the transfer member has a contact surface substantially parallel with a surface of the belt and contacted to the belt, and wherein when the belt is moving, the belt rubs the contact surface, and a toner image is transferred from such a part of image bearing member as is opposed to the contact surface; and a supporting member for supporting the transfer member, the supporting member being swingable.

Abstract: A secondary transfer facing roller includes a roller part that has a through-hole penetrating in a rotary shaft line direction at a rotation center position, and a penetrating shaft member penetrating the through-hole of the roller part and spinning the roller part on a surface of the penetrating shaft member. Eccentric cams are fixed to both end regions that are not located in the roller part, so as to rotate integrally with the penetrating shaft member. A position regulating cam and an abutting roller form a gap between the intermediate transfer belt and the secondary transfer roller immediately before a transfer sheet enters a transfer nip part. While the gap is formed, current flows between the intermediate transfer belt and the secondary transfer roller via the position regulating cam and the abutting roller.

Abstract: Printed images exhibiting a color medium are applied to the printing substrate by a printing device, the printing substrate having been provided beforehand with a viscous fluid film by an application unit arranged in front of the printing device. The color medium of the printed images migrates to a surface of the viscous fluid film and adheres there. After the drying of the fluid film the printed images are firmly fixed on the printing substrate.

Abstract: An image forming apparatus includes an image bearing member for bearing a toner image; an endless rotatable intermediary transfer belt onto which the toner image is to be transferred from the image bearing member; a transfer device disposed at a position in which the transfer device opposes the image bearing member through the intermediary transfer belt, the transfer device including a sheet member surface-contacted to an inner surface of the intermediary transfer belt and including an urging member for urging the sheet member toward the intermediary transfer belt; and a primary transfer voltage source for applying a voltage to the sheet member.

Abstract: An image transfer device includes an image bearing member, a pair of opposed transfer members, a media separator, and an electrical bias applicator. The image bearing member defines an image bearing surface on which a toner image is created. The pair of opposed transfer members is disposed opposite each other via the image bearing member to form a transfer nip therebetween through which a recording medium is passed. One of the transfer members defines a first electrode to which a first electrical bias is applied. The media separator defines a second electrode downstream from the transfer nip to which a second electrical bias is applied. The electrical bias applicator includes a power supply connectable with each of the first and second electrodes to supply the first electrical bias to the first electrode and the second electrical bias to the second electrode.

Abstract: An image forming apparatus includes a movable belt; a transfer member opposed to the image bearing member with the belt therebetween; wherein the transfer member has a contact surface substantially parallel with a surface of the belt and contacted to the belt, and wherein when the belt is moving, the belt rubs the contact surface, and a toner image is transferred from such a part of image bearing member as is opposed to the contact surface; and a supporting member for supporting the transfer member, the supporting member being swingable.

Abstract: Deflection recessed in a bow shape at the axial central portion in the longitudinal direction of the transfer member is avoided to prevent failure in image caused by the transfer nip being improperly forming at the central portion. The pressing force of the transfer member against an image bearing member resulting in failure in transfer is made uniform in the longitudinal direction. The transfer member forming the transfer nip are pressed toward the photosensitive drum at the central portion in the longitudinal direction or in the positions which are spaced apart toward the center from the ends to avoid the deflection of the transfer member.

Abstract: A limited ozone generator transfer device includes a ceramic substrate having conducting lines, a dielectric layer, and a top conducting layer with slots therein that align with the underlying conducting lines. Corona is generated in the slots by applying an AC voltage of about 2.5 kVp-p across the electrodes. This device is “green” in that it generates significantly less ozone than conventional transfer devices, thus reducing requirements on an ozone collection system.

Abstract: An image forming apparatus includes: an image bearing member for bearing a toner image; a belt for conveying the toner image; and a transfer device for rubbing the belt, and a surface of the transfer device, which is brought into contact with the belt includes linear concave portions or linear convex portions. The image forming apparatus of the present invention prevents a friction force between the belt and the transfer device rubbing the belt from increasing and brings a transfer member into a stable contact with the belt for conveying the toner image, thereby suppressing increase in drive torque of the belt which rubs the transfer device and suppressing occurrence of image failure.

Abstract: An image forming apparatus includes an image formation portion forming an image onto a recording medium in an electro-photographic process. An acquisition portion acquires image data and a storage portion stores in advance first and second image formation conditions for the electro-photographic process. A condition setting portion sets the first image-formation condition for an image formation operation, if data indicating a bar code is not included in image data acquired by the acquisition portion, and sets the second image formation condition for an image formation operation if image data indicating a bar code is included in image data acquired by the acquisition portion. A control portion allows the image formation portion to execute an image formation operation based on image data acquired by the acquisition portion according to the image formation condition set by the condition setting portion.

Abstract: An image forming apparatus includes: an image bearing member for bearing a toner image; a belt for conveying the toner image; and a transfer device for rubbing the belt, and a surface of the transfer device, which is brought into contact with the belt includes linear concave portions or linear convex portions. The image forming apparatus of the present invention prevents a friction force between the belt and the transfer device rubbing the belt from increasing and brings a transfer member into a stable contact with the belt for conveying the toner image, thereby suppressing increase in drive torque of the belt which rubs the transfer device and suppressing occurrence of image failure.

Abstract: An image forming apparatus includes a diode for restraining deterioration of an electric discharge device caused when a voltage applied to a discharge electrode and a shield electrode is switched. By switching the voltage at only one position using the diode, both of the voltage applied to the discharge electrode and the voltage applied to the shield electrode can be switched simultaneously.

Abstract: Embodiments of the present invention include an image bearing member arranged to bear an electrostatic latent image, a charging member contacting the image bearing member to charge a surface of the image bearing member with application of a DC voltage to the charging member, a current detection unit arranged to detect a DC current flowing in the charging member, and a control unit configured to control the voltage applied to the charging member, wherein a plurality of different DC voltages are successively applied to the charging member during a period of no image formation until a change amount of change in the DC current with respect to change in the DC voltage becomes not larger than a predetermined value, and the control unit controls a DC voltage applied to the charging member during a period of image formation based on a result detected by the current detection unit.

Abstract: An ion generating device is arranged such that a heater electrode is wired so as to heat (i) a creeping discharge area and (ii) areas where respective terminal sections of an induction electrode, a discharge electrode, and the heater electrode are provided. This allows prevention of dew condensation and nitric acid generation in the vicinities of the respective terminal sections.

Abstract: Deflection recessed in a bow shape at the axial central portion in the longitudinal direction of the transfer member is avoided to prevent failure in image caused by the transfer nip being improperly forming at the central portion. The pressing force of the transfer member against an image bearing member resulting in failure in transfer is made uniform in the longitudinal direction. The transfer member forming the transfer nip are pressed toward the photosensitive drum at the central portion in the longitudinal direction or in the positions which are spaced apart toward the center from the ends to avoid the deflection of the transfer member.

Abstract: In an ion generating element, (i) an induction electrode and a heater electrode are provided away from each other on one surface of an insulating base material such that the induction electrode and the heater electrode are insulated from each other, (ii) a dielectric layer is provided on the surface of the insulating base material, and (iii) the dielectric layer has a length covering the insulating base material and the dielectric layer has openings above a ground terminal of the induction electrode and above a ground terminal and a power supply connection terminal of the heater electrode so that the terminals are exposed. As a result, it is possible to provide an ion generating element for generating ions along with creeping discharge, a charging device, and an image forming apparatus, each of which can be produced at low costs and prevent damages when unexpected troubles occur, and each of which is excellent in terms of safety.

Abstract: An ion generating element of the present invention includes a discharge electrode and an inductive electrode, both of which are provided so as to face each other with a dielectric body sandwiched therebetween, and a heater electrode which warms the ion generating element by Joule heat produced because of a passage of an electrical current. A distance between the discharge electrode and the heater electrode is larger than that between the discharge electrode and the inductive electrode, and further a shield electrode having a connection for ground is provided between the heater electrode and the inductive electrode on a surface of the dielectric body at a side on which the inductive electrode is provided. Hence, it is possible to prevent a leak to the heater electrode at low cost, while giving consideration towards safety.

Abstract: A contacting and separating mechanism which causes a first member to contact a second member and separates the first member contacting the second member from the second member is disclosed. The contacting and separating mechanism includes a pressure applying member which is rotated together with the first member by using a force of a first force applying member with a first supporting point as the center and causes the first member to contact the second member and separates the first member contacting the second member from the second member, and separates the first member contacting the second member from the second member by rotating with the first member with a second supporting point as the center by changing the position of the first supporting point.

Abstract: An image forming apparatus includes an image bearing member for bearing a toner image; a movable endless transfer belt for transferring the toner image from the image bearing member onto a transfer material; and a transfer device for transferring the toner image from the image bearing member toward the transfer belt. The transfer device includes a transfer member for sliding on an inner surface of the transfer belt in contact with the inner surface, a supporting member for supporting the transfer member and an urging member for urging the supporting member toward the transfer belt. The transfer member is contacted to the inner surface of the transfer belt at a contact surface thereof without rotation relative to the supporting member during movement of the transfer belt. The supporting member is rotatable about a center axis thereof so as to be moved in a direction perpendicular to a movement direction of the transfer belt. The contact surface is convex with predetermined curvature toward the transfer belt.

Abstract: An image forming apparatus has a photoconductive drum or belt supporting a toner image, a transfer member transferring the toner image onto a recording medium, a transportation device transporting the recording medium to between the photoconductor and the transfer member, a charger charging a surface of the transfer member to the anti-polarity of the electric charge of the toner image, a rotation drive unit rotating the transfer member to the same direction of the recording medium transportation, a contacting/removing unit that contacts the transfer member to the image supported member for printing and removes the transfer member from the image supported member when not printing, and a drive force transferring/blocking unit that transfers the drive force from the rotation drive unit to the transfer member before print starting-up and blocking the drive force during printing.

Abstract: A transfer device includes: an image carrier belt; a first roller around which the image carrier belt is wound; a second roller around which the image carrier belt wound around the first roller and shifted; a first transfer roller contacting the first roller via the image carrier belt; a second transfer roller contacting the second roller via the image carrier belt; and a transfer belt wound around the first transfer roller and the second transfer roller. A width L3 of the image carrier belt and a width L4 of the transfer belt have the relationship of L3>L4.

Abstract: An improved flag-actuator (actuator) is provided for use in an electrophotographic marking system. This actuator is reversible providing sides 1 and 2, thereby about doubling the useful life of the actuator. Each side 1 and 2 is mounted at different positions on a shaft and permits a much wider range of actuator adjustment than prior art units. Depending upon a tolerance stack-up within the marking system, the user can determine whether to use either side 1 or side 2. The use of this reversible asymmetrical and eccentric actuator allows for the setting of start actuation for nearly double the tolerance stack-up.

Abstract: A transfer apparatus comprises a toner image supporting body and a corona transfer means, which are oppositely disposed, and a vibrating unit for exerting vibration force to the rear face of a toner supporting body, disposed opposite to the corona transfer means, wherein the vibrating unit has a cantilever structure for holding an end of a piezoelectric bimorph element in which a pair of piezoelectric bodies each having an electrode, are bonded to both sides of a conductive elastic member (a shim member). A protrusion portion is provided on the other end of the piezoelectric bimorph element.

Abstract: An image forming apparatus includes a movable belt; a transfer member opposed to the image bearing member with the belt therebetween; wherein the transfer member has a contact surface substantially parallel with a surface of the belt and contacted to the belt, and wherein when the belt is moving, the belt rubs the contact surface, and a toner image is transferred from such a part of image bearing member as is opposed to the contact surface; and a supporting member for supporting the transfer member, the supporting member being swingable.

Abstract: An image forming apparatus includes an image bearing member for bearing a toner image; a rotatable intermediary transfer member; and a transfer unit, configured and positioned to form a transfer nip between the intermediary transfer member and the image bearing member, for transferring the toner image from the image bearing member onto a surface of the intermediary transfer member. The transfer unit includes a sheet member on which the intermediary transfer member is slidable, and includes an elastic member for urging the sheet member toward the intermediary transfer member at a position of the transfer nip. The sheet member is provided with a reinforcing portion, having a linear expansion coefficient different from that of the sheet member, in an area in which the elastic member urges the sheet member.

Abstract: A support material toner particle for use in xerographic additive manufacturing includes a PVA polymer blend including a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer blend to be within about 1° C. to about 20° C. of a desired build material toner Tg. A xerographic toner system includes a build toner material and a support toner material, the support toner material includes a PVA polymer blend including a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer blend to be within about 1° C. to about 20° C. of the build material toner Tg. A method of making a support toner material includes blending polyvinyl alcohol with blend additives including a chitosan and polyvinylpyrrolidone and forming support toner particles after the blending step.