RZ series

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RZ
Series information
Type Single drum
StatusDiscontinued
Launched2004
Discontinued2014

The RZ series is a collection of discontinued digital duplicators from (originally released in 2004 and discontinued in 2014). Different models print in a wide range of paper sizes (A4, B4, A3, letter, legal, and ledger) and a range of resolutions (300, 600e, and 600).

All subsequent one-drum machines have been based on the design of the RZ series, with small modifications of the component modules and electronics. After advancements in the EZ series (which was released some 3 years later, in 2007), the RZ10 models were created, combining the designs of both.

Resources

Archived versions of the support manuals for the RZ2/3/5 and RZ9/10 models are available from the Internet Archive.

Model(s) Service Parts
RZ2 RZ2xx RZ3xx Series Technical Manual[1] "RZ2" Series Parts List[2]
RZ3 RZ2xx RZ3xx Series Technical Manual[1] RZ3/5 Series Parts List[3]
RZ5 RZ5xx Series Technical Manual[4] RZ3/5 Series Parts List[3]
RZ9 RZ9xx RV9xx Series Technical Manual[5] RZ9 Series Parts List[6]
RZ10 RZ1070 RZ1090 Series Technical Manual[7]
Note that the RZ10 Service Manual is a differential manual—it should be used with the RZ9 manual (it only lists the changes between the RZ9 and RZ10).

Tutorials

The following user created tutorials apply to the RZ series.

Maintenance

Replacement parts

NamePart no.StockUnit
Feed tire

035-14303 021-14301

 2 / riso Paper feed
The two matching rollers in the 1st paper feed—the outer one is the "scraper" (feeds multiple sheets in) and the inner one is the "pickup" (separates the top sheet). Each is an inner plastic core and outer tire (this is the part for the tire).
  • The inner (pickup) roller should use OEM, the outer (scraper) roller can use generic—generic tires tend to be eccentric (egg-shaped) and a smaller diameter than the originals.
  • The RP uses 3 rollers, two of which are tires on a proprietary core, but the third roller requires a solid feed tire.
Stripper pad

019-11833

 3 / riso Paper feed
The stripper pad puts upward force and friction on the multiple pages that are fed into the pickup roller, so that the teeth of the tire only propel the top sheet into the riso. It is the rubber part that wears the fastest and must be replaced regularly for stable paper feed.
  • Very old risos may use a different stripper unit, which takes an older stripper pad type (a thin square), otherwise this part is universal.
  • An alternative grey stripper pad is listed under part no. 019-11834—it uses a harder material, which is meant to last longer and be better for heavier paper stocks.
Feed roller core

023-12306 021-14302

 1 / riso Paper feed
The plastic core of the feed rollers (the feed tires are stretched around these) contains a one-way bearing, which allows the paper to be pulled freely through the 1st paper feed by the 2nd paper feed and press sections.
  • This bearing wears down over time, which will either decrease the feed power or cause the roller to drag on the rest of the system.
  • Replacement cores ship dry, and will need oiling.
Elevator shaft gear

023-12215

 1 set Paper feed
Two of these gears transport the elevator up and down. When the elevator is damaged the teeth will snap off these plastic gears—a 3 mm roll pin punch is needed to replace them.
Flaw bearing

600-50057

 2 / riso Paper feed
Four of these are used in the elevator, they are very delicate and will break apart if the elevator is damaged.
Link plate A

023-12109

 1 set Paper feed
A pair of these is responsible for locking down the side guides on plastic feed trays. If the guides are forced apart while locked, these pieces will break.
Lock plate B

030-14130

 1 set Paper feed
A pair of these is responsible for locking down the side guides on metal feed trays. If the guides are forced apart while locked, these pieces will break.
Separator needle (Z+)

023-21002 024-21038

 1 / riso Paper ejection
This needle is responsible for peeling paper off of the drum in the ejection process—if damaged (or improperly calibrated) paper will stick to the drum more and/or the needle will leave a drag mark down the center of the print.
  • In the rare occurrence of catastrophic drum failure inside the riso, the separator needle will often smash against the surface of the drum (or catch under clamp)—as a result of (1) being adjusted too close to the drum, or (2) a component of the drum raising too high off the surface of it.
  • Usually this harms the drum more than the needle, but sometimes the needle shatters too. The riso can operate without the needle (so long as the rubber hose is kept out of the paper path)—but the paper will stick to the drum more frequently.
  • There are two versions of this needle—the sharper, earlier needle is part no. 023-21002, while the newer snub-nosed needle is part no. 024-21038—they can be used interchangeably, so long as they are properly recalibrated.
  • The separator needle position should always be calibrated after changing the needle.
Shock absorber

046-15009

 1 / riso Press
The shock absorber is a small black rubber block that is part of the pressure lever mechanism in the back of the riso. The rubber will slowly degrade, until the riso can no longer lift or lower the pressure roller reliably.
  • This is a critical part—when it breaks the riso will be fully non-operable until it is replaced.
  • Instructions for replacement are available at: Shock absorber replacement
Shock absorber bracket

046-15008

 1 / riso Press
The first implementation of the shock absorber was adhered to a small strip of metal, but all contemporary ones are held in by a metal bracket which clips around wings on the shock absorber itself. When replacing the older style shock absorber with a newer one, the bracket must also be replaced.
Exit belts (Z+) (one-drum)

629-00002

 1 set Paper ejection
Exit belts transport paper out of the riso—usually a suction fan pulls air down through holes in the belts to hold the paper to them while a dedicated motor powers the belts. In one-drum machines the exit belts are a set of 3 thin belts with holes running along them.
  • Note that these belts appear very similar to two-drum belts, but they are a slightly different length and are not interchangeable.
  • As they wear, they will stretch out and slip on their rollers—paper will become stuck in the exit area (particularly larger sheets of heavier stocks).
  • Belts can be tested by dragging them with a fingertip—all the belts should move together—if individual belts slip, it's a sign that all should be replaced.
TPH gear

612-10010

 2 / riso Master making
This small plastic gear is part of the TPH pressure system—when it fails the riso will no longer be able to lift the thermal printhead, and will throw a T19 or P19 error.
  • This is a critical part—when it breaks the riso will be fully non-operable until it is replaced. They break every 3–7 years.
  • Instructions for replacement are available at: Thermal-pressure motor lock (TPH gear)
Transport bands (Z+) (one-drum)

640-60001 628-21401

 1 set / riso Master removal
A set of 3–5 small rubber bands (o-rings) which are used to transport the stencil off of the drum and into the disposal box. When they break, the stencil will become more easily jammed between the disposal rollers.
  • These parts can often be easily replaced with generic o-rings of a similar (or slightly smaller) size.
    • The Japanese size for these is listed as 2×140 (2 mm cross section and 140 center circumference) or S42 (a JIS designation).
    • The closest ISO size is A0425 (1.8 mm cross section, and 42.5 mm inner diameter).
    • In imperial sizes these bands have a 1/16" cross section—the closest standard size (slightly smaller) is ⌀ 1¾ in (outer diameter)—however in practice, slightly smaller o-rings (down to ⌀ 1½ in) have been more effective.
  • All of the bands in the set should be replaced at the same time—A4/B4/legal machines use 3 bands, while most A3/tabloid machines use 4; Riso SF logo tabloid machines use 5.
  • Note that these bands appear very similar to two-drum bands, but they are a slightly different length and are not interchangeable.

Specifications

 Print areaDPIYear
RZ200A43002004
RZ220Legal3002004
RZ230B43002004
RZ300A43002004
RZ310A43002004
RZ370A33002004
RZ390Ledger600e2004
RZ500A4600e
RZ510A4600e
RZ570A3600e2004
RZ590Ledger600e2004
RZ970A36002004
RZ977A3
RZ990Ledger6002004
RZ997Ledger
RZ1070A36002010
RZ1090Ledger6002011

Usage

There are 62 places printing with Riso RZ logo duplicators (14% of all active places).

RZ220DEMO Art & Books 🇺🇸Each & Every 🇺🇸Kanak-Kanak Press 🇺🇸Moniker Press 🇨🇦Robert Blackburn Printmaking Workshop 🇺🇸Sunroom 🇺🇸TSUNAMI PRESS 🇵🇪Tiny Splendor 🇺🇸Transcendence Omnimedia dba Jacky Tran 🇺🇸Trash Day Press 🇺🇸
RZ310Oddities Prints 🇺🇸Robert Blackburn Printmaking Workshop 🇺🇸T-nest press 🇺🇸
RZ370Dizzy Ink 🇬🇧No Point atelier 🇧🇬Out of the Blueprint 🇬🇧Ririsoan 🇮🇩Risotrip Print Shop Co. 🇧🇷Rosidruckt 🇩🇪Stray Pages 🇦🇺Unverblümelt & Risolove 🇩🇪
RZ390Depression Press 🇺🇸Gato Negro Ediciones 🇲🇽Gold Rain 🇲🇽Gyros Nyomda 🇭🇺Impronta Casa Editora 🇲🇽Lean Press 🇺🇸Nova Community Arts 🇺🇸Outlet 🇺🇸Pencil Urchin Press 🇺🇸REESO Press 🇺🇸Risotopia 🇺🇸Secret Riso Club 🇺🇸Space 1026 🇺🇸Studio Two Three 🇺🇸Talking Dolls 🇺🇸Wendy's Subway 🇺🇸Zygote Press 🇺🇸
RZ570Do the Print 🇪🇸
RZ590Art Problems Studio 🇺🇸Burn All Books 🇺🇸Outlet 🇺🇸Space 1026 🇺🇸Tiny Splendor 🇺🇸
RZ970COLORAMA 🇩🇪Druckkollektiv UNTERDRUCK 🇩🇪Footprint Workers Co-operative 🇬🇧Tree Paper Comics 🇦🇺
RZ990Directangle Press 🇺🇸Faísca lab 🇧🇷Flatpack Publications 🇺🇸Floss Editions 🇺🇸Issue Press 🇺🇸L'abricot 🇨🇦Oddities Prints 🇺🇸Rathaus Press 🇺🇸Reprographixxx 🇺🇸Spina/Novoa 🇺🇸The Arm 🇺🇸Volúsia Press 🇧🇷
RZ1070Hibou Print Club 🇫🇷PageMasters 🇬🇧RISOFORT 🇩🇪
RZ1090BearBear 🇺🇸Paper Press Punch 🇺🇸Reasonable Ink 🇨🇦Steph Ford Studio 🇨🇦
Loading map...

A map of the 62 places printing with Riso RZ logo duplicators—as listed in the Atlas.

References

  1. ↑ 1.0 1.1 RISO Inc. Technical Services & Support. RZ2xx RZ3xx Series Technical Manual. Revision 3.0. Riso Kagaku (2005).
  2. ↑ RISO KAGAKU CORPORATION. "RZ2" Series Parts List. Version 2.0. Riso Kagaku (2004).
  3. ↑ 3.0 3.1 Riso Kagaku Corporation (Overseas Technical Department). RZ3/5 Series Parts List. Version 3.0. Riso Kagaku (2005).
  4. ↑ RISO Inc. Technical Services & Support. RZ5xx Series Technical Manual. Revision 1.0. Riso Kagaku (2005).
  5. ↑ Riso Kagaku Corporation. RZ9xx RV9xx Series Technical Manual. Revision 0.2. Riso Kagaku (2005).
  6. ↑ Riso Kagaku Corporation (Overseas Technical Department). RZ9 Series Parts List. Version 1.0. Riso Kagaku (2005).
  7. ↑ RISO Inc. Technical Services & Support. RZ1070 RZ1090 Series Technical Manual. Revision 0.91. Riso Kagaku (2010).
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